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openGauss-server/src/common/backend/utils/misc/guc.cpp
opengauss-bot 6b90aeccb7 !1748 Modify the description information of asp_sample_interval 
Merge pull request !1748 from LyndonYang/master
2022-06-30 03:45:55 +00:00

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/* --------------------------------------------------------------------
* guc.c
*
* Support for grand unified configuration schema, including SET
* command, configuration file, and command line options.
* See src/backend/utils/misc/README for more information.
*
*
* Copyright (c) 2000-2012, PostgreSQL Global Development Group
* Portions Copyright (c) 2010-2012 Postgres-XC Development Group
* Portions Copyright (c) 2021, openGauss Contributors
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
* src/backend/utils/misc/guc.c
*
* --------------------------------------------------------------------
*/
#include "postgres.h"
#include "knl/knl_variable.h"
#include <float.h>
#include <math.h>
#include <limits.h>
#include "utils/elog.h"
#ifdef HAVE_SYSLOG
#include <syslog.h>
#endif
#include "access/cbmparsexlog.h"
#include "access/gin.h"
#ifdef PGXC
#include "access/gtm.h"
#include "pgxc/pgxc.h"
#endif
#include "access/transam.h"
#include "access/twophase.h"
#include "access/xact.h"
#include "access/xlog.h"
#include "access/dfs/dfs_insert.h"
#ifdef ENABLE_WHITEBOX
#include "access/ustore/knl_whitebox_test.h"
#endif
#include "gs_bbox.h"
#include "catalog/namespace.h"
#include "catalog/pgxc_group.h"
#include "catalog/storage_gtt.h"
#include "commands/async.h"
#ifdef ENABLE_MULTIPLE_NODES
#include "commands/copy.h"
#endif
#include "commands/prepare.h"
#include "commands/vacuum.h"
#include "commands/variable.h"
#include "commands/tablespace.h"
#include "commands/trigger.h"
#include "funcapi.h"
#include "instruments/instr_statement.h"
#include "job/job_scheduler.h"
#include "libpq/auth.h"
#include "libpq/be-fsstubs.h"
#include "libpq/libpq.h"
#include "libpq/pqformat.h"
#include "miscadmin.h"
#include "opfusion/opfusion.h"
#include "optimizer/cost.h"
#include "optimizer/geqo.h"
#include "optimizer/nodegroups.h"
#include "optimizer/paths.h"
#include "optimizer/planmain.h"
#include "optimizer/prep.h"
#include "optimizer/gtmfree.h"
#include "parser/parse_expr.h"
#include "parser/parse_oper.h"
#include "parser/parse_type.h"
#include "parser/parser.h"
#include "parser/scansup.h"
#include "pgstat.h"
#include "pgxc/route.h"
#include "workload/workload.h"
#include "pgaudit.h"
#include "instruments/instr_unique_sql.h"
#ifdef PGXC
#include "commands/tablecmds.h"
#include "nodes/nodes.h"
#include "optimizer/pgxcship.h"
#include "pgxc/execRemote.h"
#include "pgxc/locator.h"
#include "optimizer/pgxcplan.h"
#include "pgxc/poolmgr.h"
#include "pgxc/nodemgr.h"
#include "utils/lsyscache.h"
#endif
#include "access/multi_redo_settings.h"
#include "catalog/pg_authid.h"
#include "commands/user.h"
#include "flock.h"
#include "gaussdb_version.h"
#include "utils/hll.h"
#include "libcomm/libcomm.h"
#include "libpq/libpq-be.h"
#include "libpq/md5.h"
#include "libpq/sha2.h"
#include "optimizer/planner.h"
#include "optimizer/streamplan.h"
#include "postmaster/alarmchecker.h"
#include "postmaster/autovacuum.h"
#include "postmaster/bgwriter.h"
#include "postmaster/pagewriter.h"
#include "postmaster/postmaster.h"
#include "postmaster/syslogger.h"
#include "postmaster/twophasecleaner.h"
#include "postmaster/walwriter.h"
#include "postmaster/bgworker.h"
#include "replication/dataqueue.h"
#include "replication/datareceiver.h"
#include "replication/reorderbuffer.h"
#include "replication/replicainternal.h"
#include "replication/slot.h"
#include "replication/syncrep.h"
#include "replication/walreceiver.h"
#include "replication/walsender.h"
#include "storage/buf/bufmgr.h"
#include "storage/cucache_mgr.h"
#include "storage/smgr/fd.h"
#include "storage/predicate.h"
#include "storage/procarray.h"
#include "storage/standby.h"
#include "storage/remote_adapter.h"
#include "tcop/tcopprot.h"
#include "threadpool/threadpool.h"
#include "tsearch/ts_cache.h"
#ifdef ENABLE_MULTIPLE_NODES
#include "tsdb/utils/constant_def.h"
#endif
#include "utils/acl.h"
#include "utils/anls_opt.h"
#include "utils/atomic.h"
#include "utils/be_module.h"
#include "utils/builtins.h"
#include "utils/bytea.h"
#include "utils/distribute_test.h"
#include "utils/segment_test.h"
#include "utils/guc_tables.h"
#include "utils/memtrack.h"
#include "utils/memutils.h"
#include "utils/pg_locale.h"
#include "utils/plancache.h"
#include "utils/portal.h"
#include "utils/ps_status.h"
#include "utils/rel_gs.h"
#include "utils/rel.h"
#include "utils/snapmgr.h"
#include "utils/syscache.h"
#include "access/heapam.h"
#include "utils/tzparser.h"
#include "utils/xml.h"
#include "workload/cpwlm.h"
#include "workload/workload.h"
#include "utils/guc_sql.h"
#include "utils/guc_storage.h"
#include "utils/guc_security.h"
#include "utils/guc_memory.h"
#include "utils/guc_network.h"
#include "utils/guc_resource.h"
#ifndef PG_KRB_SRVTAB
#define PG_KRB_SRVTAB ""
#endif
#ifndef PG_KRB_SRVNAM
#define PG_KRB_SRVNAM ""
#endif
#define CONFIG_FILENAME "postgresql.conf"
#define CONFIG_LOCK_FILE "postgresql.conf.lock"
#ifdef ENABLE_MOT
#define MOT_CONFIG_FILENAME "mot.conf"
#endif
#define HBA_FILENAME "pg_hba.conf"
#define IDENT_FILENAME "pg_ident.conf"
#define INVALID_LINES_IDX (int)(~0)
#define MAX_PARAM_LEN 1024
#define WRITE_CONFIG_LOCK_LEN (1024 * 1024)
#ifdef EXEC_BACKEND
#define CONFIG_EXEC_PARAMS "global/config_exec_params"
#define CONFIG_EXEC_PARAMS_NEW "global/config_exec_params.new"
#endif
/* upper limit for GUC variables measured in kilobytes of memory */
/* note that various places assume the byte size fits in a "long" variable */
#if SIZEOF_SIZE_T > 4 && SIZEOF_LONG > 4
#define MAX_KILOBYTES INT_MAX
#else
#define MAX_KILOBYTES (INT_MAX / 1024)
#endif
#ifdef ENABLE_UT
#define static
#endif
#define KB_PER_MB 1024
#define KB_PER_GB (1024 * 1024)
#define MS_PER_S 1000
#define S_PER_MIN 60
#define MS_PER_MIN (1000 * 60)
#define MIN_PER_H 60
#define S_PER_H (60 * 60)
#define MS_PER_H (1000 * 60 * 60)
#define MIN_PER_D (60 * 24)
#define S_PER_D (60 * 60 * 24)
#define MS_PER_D (1000 * 60 * 60 * 24)
#define H_PER_D 24
extern volatile bool most_available_sync;
extern void SetThreadLocalGUC(knl_session_context* session);
THR_LOCAL int comm_ackchk_time;
THR_LOCAL GucContext currentGucContext;
const char* sync_guc_variable_namelist[] = {"work_mem",
"query_mem",
"ustore_attr",
"ssl_renegotiation_limit",
"temp_buffers",
"maintenance_work_mem",
"max_stack_depth",
"temp_file_limit",
"vacuum_cost_delay",
"vacuum_cost_page_hit",
"vacuum_cost_page_miss",
"vacuum_cost_page_dirty",
"vacuum_cost_limit",
"effective_io_concurrency",
"synchronous_commit",
"commit_delay",
"commit_siblings",
"client_min_messages",
"log_min_messages",
"log_min_error_statement",
"log_min_duration_statement",
"logging_module",
"analysis_options",
"plog_merge_age",
"application_name",
"connection_info",
"cgroup_name",
"memory_detail_tracking",
"debug_print_parse",
"debug_print_rewritten",
"debug_print_plan",
"debug_pretty_print",
"log_connections",
"log_disconnections",
"log_duration",
"log_error_verbosity",
"log_lock_waits",
"log_statement",
"log_temp_files",
"track_activities",
"enable_instr_track_wait",
"enable_instr_rt_percentile",
"instr_rt_percentile_interval",
"enable_wdr_snapshot",
"wdr_snapshot_interval",
"wdr_snapshot_retention_days",
"wdr_snapshot_query_timeout",
"asp_sample_num",
"asp_sample_interval",
"asp_flush_rate",
"asp_retention_days",
"enable_asp",
"track_counts",
"track_io_timing",
"track_functions",
"update_process_title",
"log_statement_stats",
"log_parser_stats",
"log_planner_stats",
"log_executor_stats",
"search_path",
"percentile",
"default_tablespace",
"temp_tablespaces",
"check_function_bodies",
"default_transaction_isolation",
"default_transaction_read_only",
"default_transaction_deferrable",
"session_replication_role",
"session_respool",
"statement_timeout",
"vacuum_freeze_table_age",
"vacuum_freeze_min_age",
"bytea_output",
"xmlbinary",
"xmloption",
"DateStyle",
"IntervalStyle",
"TimeZone",
"timezone_abbreviations",
"extra_float_digits",
"client_encoding",
"lc_messages",
"lc_monetary",
"lc_numeric",
"lc_time",
"default_text_search_config",
"dynamic_library_path",
"gin_fuzzy_search_limit",
"local_preload_libraries",
"deadlock_timeout",
"array_nulls",
"backslash_quote",
"default_with_oids",
"escape_string_warning",
"lo_compat_privileges",
"quote_all_identifiers",
"sql_inheritance",
"standard_conforming_strings",
"synchronize_seqscans",
"transform_null_equals",
"exit_on_error",
#ifdef ENABLE_MULTIPLE_NODES
"gtm_backup_barrier",
#endif
"xc_maintenance_mode",
"enable_hdfs_predicate_pushdown",
"enable_hadoop_env",
"behavior_compat_options",
"enable_valuepartition_pruning",
"enable_constraint_optimization",
"enable_bloom_filter",
"cstore_insert_mode",
"enable_delta_store",
"enable_codegen",
"enable_codegen_print",
"codegen_cost_threshold",
"codegen_strategy",
"max_query_retry_times",
"convert_string_to_digit",
#ifdef ENABLE_MULTIPLE_NODES
"agg_redistribute_enhancement",
#endif
"sql_compatibility",
"hashagg_table_size",
"max_loaded_cudesc",
"partition_mem_batch",
"partition_max_cache_size",
"memory_tracking_mode",
"enable_early_free",
"cstore_backwrite_quantity",
"cstore_backwrite_max_threshold",
"prefetch_quantity",
"backwrite_quantity",
"cstore_prefetch_quantity",
"enable_fast_allocate",
"enable_adio_debug",
"enable_adio_function",
"fast_extend_file_size",
"enable_global_stats",
"enable_hypo_index",
"td_compatible_truncation",
"ngram_punctuation_ignore",
"ngram_grapsymbol_ignore",
"ngram_gram_size",
"enable_orc_cache",
#ifdef ENABLE_MULTIPLE_NODES
"enable_cluster_resize",
"gds_debug_mod",
#endif
"enable_compress_spill",
"resource_track_level",
"fault_mon_timeout",
"trace_sort",
"ignore_checksum_failure",
"wal_log_hints",
#ifdef ENABLE_MULTIPLE_NODES
"enable_parallel_ddl",
"max_cn_temp_file_size",
#endif
"cn_send_buffer_size",
"enable_compress_hll",
"hll_default_log2m",
"hll_default_log2explicit",
"hll_default_log2sparse",
"hll_duplicate_check",
"hll_default_regwidth",
"hll_default_sparseon",
"hll_default_expthresh",
"hll_max_sparse",
"enable_sonic_optspill",
"enable_sonic_hashjoin",
"enable_sonic_hashagg",
#ifdef ENABLE_MULTIPLE_NODES
"enable_stream_recursive",
#endif
"data_sync_retry",
#ifdef ENABLE_QUNIT
"qunit_case_number",
#endif
"instr_unique_sql_count",
"enable_instr_cpu_timer",
"instr_unique_sql_track_type",
"enable_incremental_catchup",
"wait_dummy_time",
"max_recursive_times",
"sql_use_spacelimit",
"default_limit_rows",
"sql_beta_feature",
#ifndef ENABLE_MULTIPLE_NODES
"plsql_show_all_error",
"uppercase_attribute_name",
#endif
"track_stmt_session_slot",
"track_stmt_stat_level",
"track_stmt_details_size"
};
static void set_config_sourcefile(const char* name, char* sourcefile, int sourceline);
static bool call_bool_check_hook(struct config_bool* conf, bool* newval, void** extra, GucSource source, int elevel);
static bool call_int_check_hook(struct config_int* conf, int* newval, void** extra, GucSource source, int elevel);
static bool call_int64_check_hook(struct config_int64* conf, int64* newval, void** extra, GucSource source, int elevel);
static bool call_real_check_hook(struct config_real* conf, double* newval, void** extra, GucSource source, int elevel);
static bool call_string_check_hook(
struct config_string* conf, char** newval, void** extra, GucSource source, int elevel);
static bool call_enum_check_hook(struct config_enum* conf, int* newval, void** extra, GucSource source, int elevel);
static bool check_log_destination(char** newval, void** extra, GucSource source);
static void assign_log_destination(const char* newval, void* extra);
static void assign_syslog_facility(int newval, void* extra);
static void assign_syslog_ident(const char* newval, void* extra);
static void assign_session_replication_role(int newval, void* extra);
static bool check_client_min_messages(int* newval, void** extra, GucSource source);
static bool check_debug_assertions(bool* newval, void** extra, GucSource source);
#ifdef USE_BONJOUR
static bool check_bonjour(bool* newval, void** extra, GucSource source);
#endif
static bool check_gpc_syscache_threshold(bool* newval, void** extra, GucSource source);
static bool check_stage_log_stats(bool* newval, void** extra, GucSource source);
static bool check_log_stats(bool* newval, void** extra, GucSource source);
static void assign_thread_working_version_num(int newval, void* extra);
static bool check_pgxc_maintenance_mode(bool* newval, void** extra, GucSource source);
#ifdef LIBCOMM_SPEED_TEST_ENABLE
static void assign_comm_test_thread_num(int newval, void* extra);
static void assign_comm_test_msg_len(int newval, void* extra);
static void assign_comm_test_send_sleep(int newval, void* extra);
static void assign_comm_test_send_once(int newval, void* extra);
static void assign_comm_test_recv_sleep(int newval, void* extra);
static void assign_comm_test_recv_once(int newval, void* extra);
#endif
#ifdef LIBCOMM_FAULT_INJECTION_ENABLE
static void assign_comm_fault_injection(int newval, void* extra);
#endif
bool check_canonical_path(char** newval, void** extra, GucSource source);
bool check_directory(char** newval, void** extra, GucSource source);
static bool check_log_filename(char** newval, void** extra, GucSource source);
static bool check_perf_log(char** newval, void** extra, GucSource source);
static bool check_timezone_abbreviations(char** newval, void** extra, GucSource source);
static void assign_timezone_abbreviations(const char* newval, void* extra);
static void pg_timezone_abbrev_initialize(void);
static void assign_tcp_keepalives_idle(int newval, void *extra);
static void assign_tcp_keepalives_interval(int newval, void *extra);
static void assign_tcp_keepalives_count(int newval, void *extra);
static const char* show_tcp_keepalives_idle(void);
static const char* show_tcp_keepalives_interval(void);
static const char* show_tcp_keepalives_count(void);
static bool check_effective_io_concurrency(int* newval, void** extra, GucSource source);
static void assign_effective_io_concurrency(int newval, void* extra);
static void assign_pgstat_temp_directory(const char* newval, void* extra);
static bool check_application_name(char** newval, void** extra, GucSource source);
static void assign_application_name(const char* newval, void* extra);
static const char* show_log_file_mode(void);
static char* config_enum_get_options(
struct config_enum* record, const char* prefix, const char* suffix, const char* separator);
static bool validate_conf_option(struct config_generic* record, const char *name, const char *value,
GucSource source, int elevel, bool freemem, void *newval, void **newextra);
/* Database Security: Support password complexity */
bool check_double_parameter(double* newval, void** extra, GucSource source);
static void check_setrole_permission(const char* rolename, char* passwd, bool IsSetRole);
static bool verify_setrole_passwd(const char* rolename, char* passwd, bool IsSetRole);
bool CheckReplChannel(const char* ChannelInfo);
static bool isOptLineCommented(char* optLine);
static bool isMatchOptionName(char* optLine, const char* paraName,
int paraLength, int* paraOffset, int* valueLength, int* valueOffset, bool ignore_case);
bool logging_module_check(char** newval, void** extra, GucSource source);
void logging_module_guc_assign(const char* newval, void* extra);
/* Inplace Upgrade GUC hooks */
static bool check_is_upgrade(bool* newval, void** extra, GucSource source);
static void assign_is_inplace_upgrade(const bool newval, void* extra);
bool transparent_encrypt_kms_url_region_check(char** newval, void** extra, GucSource source);
/* SQL DFx Options : Support different sql dfx option */
static const char* analysis_options_guc_show(void);
static bool analysis_options_check(char** newval, void** extra, GucSource source);
static void analysis_options_guc_assign(const char* newval, void* extra);
static void assign_instr_unique_sql_count(int newval, void* extra);
static bool validate_conf_bool(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra);
static bool validate_conf_int(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra);
static bool validate_conf_int64(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra);
static bool validate_conf_real(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra);
static bool validate_conf_string(struct config_generic *record, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra);
static bool validate_conf_enum(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra);
#ifndef ENABLE_MULTIPLE_NODES
static void CheckAndGetAlterSystemSetParam(AlterSystemStmt* altersysstmt,
char** outer_name, char** outer_value, struct config_generic** outer_record);
static void FinishAlterSystemSet(GucContext context);
static void ConfFileNameCat(char* ConfFileName, char* ConfTmpFileName,
char* ConfTmpBakFileName, char* ConfLockFileName);
static void WriteAlterSystemSetGucFile(char* ConfFileName, char** opt_lines, ConfFileLock* filelock);
static char** LockAndReadConfFile(char* ConfFileName, char* ConfTmpFileName, char* ConfLockFileName,
ConfFileLock* filelock);
#endif
inline void scape_space(char **pp)
{
while (isspace((unsigned char)*(*pp))) {
(*pp)++;
}
}
#ifdef ENABLE_MULTIPLE_NODES
static void assign_gtm_rw_timeout(int newval, void* extra);
static bool check_gtmhostconninfo(char** newval, void** extra, GucSource source);
static GTM_HOST_IP* ParseGtmHostConnInfo(const char* ConnInfoList, int* InfoLength);
static void assign_gtmhostconninfo0(const char* newval, void* extra);
static void assign_gtmhostconninfo1(const char* newval, void* extra);
static void assign_gtmhostconninfo2(const char* newval, void* extra);
static void assign_gtmhostconninfo3(const char* newval, void* extra);
static void assign_gtmhostconninfo4(const char* newval, void* extra);
static void assign_gtmhostconninfo5(const char* newval, void* extra);
static void assign_gtmhostconninfo6(const char* newval, void* extra);
static void assign_gtmhostconninfo7(const char* newval, void* extra);
static bool check_compaciton_strategy(char** newval, void** extra, GucSource source);
static bool ts_compaction_guc_filter(const char* ptoken, const int min_num, const int max_num);
#endif
static void count_variables_num(GucNodeType nodetype,
int &num_single_vars_out, int &num_both_vars_out, int &num_distribute_vars_out);
static void InitConfigureNamesBool();
static void InitConfigureNamesInt();
static void InitConfigureNamesInt64();
static void InitConfigureNamesReal();
static void InitConfigureNamesString();
static void InitConfigureNamesEnum();
/*
* isMatchOptionName - Check wether the option name is in the configure file.
*
* Params:
* @optLine: Line in the configure file.
* @paraName: Paramater name.
* @paraLength: Paramater length.
* @paraOffset: Paramater offset int the optLine.
* @valueLength: Value length.
* @valueOffset: Value offset int the optLine.
*
* Returns:
* True, iff the option name is in the configure file; else false.
*/
static bool isMatchOptionName(char* optLine, const char* paraName,
int paraLength, int* paraOffset, int* valueLength, int* valueOffset, bool ignore_case)
{
char* p = NULL;
char* q = NULL;
char* tmp = NULL;
p = optLine;
/* Skip all the blanks at the begin of the optLine */
scape_space(&p);
if ('#' == *p) {
p++;
}
/* Skip all the blanks after '#' and before the paraName */
scape_space(&p);
if (ignore_case && strncasecmp(p, paraName, paraLength) != 0) {
return false;
} else if (!ignore_case && strncmp(p, paraName, paraLength) != 0) {
return false;
}
if (paraOffset != NULL) {
*paraOffset = p - optLine;
}
p += paraLength;
scape_space(&p);
/* If not '=', this optLine's format is wrong in configure file */
if (*p != '=') {
return false;
}
p++;
/* Skip all the blanks after '=' and before the value */
scape_space(&p);
q = p + 1;
tmp = q;
while (*q && !('\n' == *q || '#' == *q)) {
if (!isspace((unsigned char)*q)) {
/* End of string */
if ('\'' == *q) {
tmp = ++q;
break;
} else {
tmp = ++q;
}
} else {
/*
* If paraName is a string, the ' ' is considered to
* be part of the string.
*/
(*p == '\'') ? (tmp = ++q) : q++;
}
}
if (valueOffset != NULL) {
*valueOffset = p - optLine;
}
if (valueLength != NULL) {
*valueLength = (NULL == tmp) ? 0 : (tmp - p);
}
return true;
}
/*
* isOptLineCommented - Check wether the option line is commented with '#'.
*
* Params:
* @optLine: Line in the configure file.
*
* Returns:
* True, iff the option line starts with '#'; else false.
*/
static bool isOptLineCommented(char* optLine)
{
char* tmp = NULL;
if (NULL == optLine) {
return false;
}
tmp = optLine;
/* Skip all the blanks at the begin of the optLine */
while (isspace((unsigned char)*tmp)) {
tmp++;
}
if ('#' == *tmp) {
return true;
}
return false;
}
/*
* Options for enum values defined in this module.
*
* NOTE! Option values may not contain double quotes!
*/
static const struct config_enum_entry bytea_output_options[] = {
{"escape", BYTEA_OUTPUT_ESCAPE, false}, {"hex", BYTEA_OUTPUT_HEX, false}, {NULL, 0, false}};
/*
* We have different sets for client and server message level options because
* they sort slightly different (see "log" level)
*/
static const struct config_enum_entry client_message_level_options[] = {{"debug", DEBUG2, false},
{"debug5", DEBUG5, false},
{"debug4", DEBUG4, false},
{"debug3", DEBUG3, false},
{"debug2", DEBUG2, false},
{"debug1", DEBUG1, false},
{"log", LOG, false},
{"info", INFO, false},
{"notice", NOTICE, false},
{"warning", WARNING, false},
{"error", ERROR, false},
{"fatal", FATAL, false},
{"panic", PANIC, false},
{NULL, 0, false}};
static const struct config_enum_entry server_message_level_options[] = {{"debug", DEBUG2, false},
{"debug5", DEBUG5, false},
{"debug4", DEBUG4, false},
{"debug3", DEBUG3, false},
{"debug2", DEBUG2, false},
{"debug1", DEBUG1, false},
{"info", INFO, false},
{"notice", NOTICE, false},
{"warning", WARNING, false},
{"error", ERROR, false},
{"log", LOG, false},
{"fatal", FATAL, false},
{"panic", PANIC, false},
{NULL, 0, false}};
static const struct config_enum_entry intervalstyle_options[] = {{"postgres", INTSTYLE_POSTGRES, false},
{"postgres_verbose", INTSTYLE_POSTGRES_VERBOSE, false},
{"sql_standard", INTSTYLE_SQL_STANDARD, false},
{"iso_8601", INTSTYLE_ISO_8601, false},
{g_interStyleVal.name, INTSTYLE_A, false},
{NULL, 0, false}};
static const struct config_enum_entry log_error_verbosity_options[] = {{"terse", PGERROR_TERSE, false},
{"default", PGERROR_DEFAULT, false},
{"verbose", PGERROR_VERBOSE, false},
{NULL, 0, false}};
static const struct config_enum_entry log_statement_options[] = {{"none", LOGSTMT_NONE, false},
{"ddl", LOGSTMT_DDL, false},
{"mod", LOGSTMT_MOD, false},
{"all", LOGSTMT_ALL, false},
{NULL, 0, false}};
static const struct config_enum_entry isolation_level_options[] = {{"serializable", XACT_SERIALIZABLE, false},
{"repeatable read", XACT_REPEATABLE_READ, false},
{"read committed", XACT_READ_COMMITTED, false},
{"read uncommitted", XACT_READ_UNCOMMITTED, false},
{NULL, 0}};
static const struct config_enum_entry session_replication_role_options[] = {
{"origin", SESSION_REPLICATION_ROLE_ORIGIN, false},
{"replica", SESSION_REPLICATION_ROLE_REPLICA, false},
{"local", SESSION_REPLICATION_ROLE_LOCAL, false},
{NULL, 0, false}};
static const struct config_enum_entry syslog_facility_options[] = {
#ifdef HAVE_SYSLOG
{"local0", LOG_LOCAL0, false},
{"local1", LOG_LOCAL1, false},
{"local2", LOG_LOCAL2, false},
{"local3", LOG_LOCAL3, false},
{"local4", LOG_LOCAL4, false},
{"local5", LOG_LOCAL5, false},
{"local6", LOG_LOCAL6, false},
{"local7", LOG_LOCAL7, false},
#else
{"none", 0, false},
#endif
{NULL, 0}};
static const struct config_enum_entry track_function_options[] = {
{"none", TRACK_FUNC_OFF, false}, {"pl", TRACK_FUNC_PL, false}, {"all", TRACK_FUNC_ALL, false}, {NULL, 0, false}};
static const struct config_enum_entry xmlbinary_options[] = {
{"base64", XMLBINARY_BASE64, false}, {"hex", XMLBINARY_HEX, false}, {NULL, 0, false}};
static const struct config_enum_entry xmloption_options[] = {
{"content", XMLOPTION_CONTENT, false}, {"document", XMLOPTION_DOCUMENT, false}, {NULL, 0, false}};
/*
* Define remote connection types for PGXC
*/
static const struct config_enum_entry pgxc_conn_types[] = {
{"application", REMOTE_CONN_APP, false},
{"coordinator", REMOTE_CONN_COORD, false},
{"datanode", REMOTE_CONN_DATANODE, false},
{"gtm", REMOTE_CONN_GTM, false},
{"gtmproxy", REMOTE_CONN_GTM_PROXY, false},
{"internaltool", REMOTE_CONN_INTERNAL_TOOL, false},
{"gtmtool", REMOTE_CONN_GTM_TOOL, false},
{NULL, 0, false}};
static const struct config_enum_entry unique_sql_track_option[] = {
{"top", UNIQUE_SQL_TRACK_TOP, false}, {"all", UNIQUE_SQL_TRACK_ALL, true}, {NULL, 0, false}};
#ifndef ENABLE_MULTIPLE_NODES
/*
* Synchronization strategy for configuration files between host and standby.
*/
static const struct config_enum_entry sync_config_strategy_options[] = {
{"all_node", ALL_NODE, true},
{"only_sync_node", ONLY_SYNC_NODE, true},
{"none_node", NONE_NODE, true},
{NULL, 0, false}
};
#endif
static const struct config_enum_entry cluster_run_mode_options[] = {
{"cluster_primary", RUN_MODE_PRIMARY, false},
{"cluster_standby", RUN_MODE_STANDBY, false},
{NULL, 0, false}};
/*
* GUC option variables that are exported from this module
*/
#ifdef USE_ASSERT_CHECKING
THR_LOCAL bool assert_enabled = true;
#else
THR_LOCAL bool assert_enabled = false;
#endif
THR_LOCAL int log_min_messages = WARNING;
THR_LOCAL int client_min_messages = NOTICE;
THR_LOCAL bool force_backtrace_messages = false;
/*
* Displayable names for context types (enum GucContext)
*
* Note: these strings are deliberately not localized.
*/
const char* const GucContext_Names[] = {
/* PGC_INTERNAL */ "internal",
/* PGC_POSTMASTER */ "postmaster",
/* PGC_SIGHUP */ "sighup",
/* PGC_BACKEND */ "backend",
/* PGC_SUSET */ "superuser",
/* PGC_USERSET */ "user"};
/*
* Displayable names for source types (enum GucSource)
*
* Note: these strings are deliberately not localized.
*/
const char* const GucSource_Names[] = {
/* PGC_S_DEFAULT */ "default",
/* PGC_S_DYNAMIC_DEFAULT */ "default",
/* PGC_S_ENV_VAR */ "environment variable",
/* PGC_S_FILE */ "configuration file",
/* PGC_S_ARGV */ "command line",
/* PGC_S_DATABASE */ "database",
/* PGC_S_USER */ "user",
/* PGC_S_DATABASE_USER */ "database user",
/* PGC_S_CLIENT */ "client",
/* PGC_S_OVERRIDE */ "override",
/* PGC_S_INTERACTIVE */ "interactive",
/* PGC_S_TEST */ "test",
/* PGC_S_SESSION */ "session"};
/*
* Displayable names for the groupings defined in enum config_group
*/
const char* const config_group_names[] = {
/* UNGROUPED */
gettext_noop("Ungrouped"),
/* FILE_LOCATIONS */
gettext_noop("File Locations"),
/* CONN_AUTH */
gettext_noop("Connections and Authentication"),
/* CONN_AUTH_SETTINGS */
gettext_noop("Connections and Authentication / Connection Settings"),
/* CONN_AUTH_SECURITY */
gettext_noop("Connections and Authentication / Security and Authentication"),
/* RESOURCES */
gettext_noop("Resource Usage"),
/* RESOURCES_MEM */
gettext_noop("Resource Usage / Memory"),
/* RESOURCES_DISK */
gettext_noop("Resource Usage / Disk"),
/* RESOURCES_KERNEL */
gettext_noop("Resource Usage / Kernel Resources"),
/* RESOURCES_VACUUM_DELAY */
gettext_noop("Resource Usage / Cost-Based Vacuum Delay"),
/* RESOURCES_BGWRITER */
gettext_noop("Resource Usage / Background Writer"),
/* RESOURCES_ASYNCHRONOUS */
gettext_noop("Resource Usage / Asynchronous Behavior"),
/* RESOURCES_RECOVERY */
gettext_noop("Resource usage / Recovery"),
/* RESOURCES_WORKLOAD */
gettext_noop("Resource usage / Workload Scheduling"),
/* WAL */
gettext_noop("Write-Ahead Log"),
/* WAL_SETTINGS */
gettext_noop("Write-Ahead Log / Settings"),
/* WAL_CHECKPOINTS */
gettext_noop("Write-Ahead Log / Checkpoints"),
/* WAL_ARCHIVING */
gettext_noop("Write-Ahead Log / Archiving"),
/* REPLICATION */
gettext_noop("Replication"),
/* REPLICATION_SENDING */
gettext_noop("Replication / Sending Servers"),
/* REPLICATION_MASTER */
gettext_noop("Replication / Master Server"),
/* REPLICATION_STANDBY */
gettext_noop("Replication / Standby Servers"),
/* REPLICATION_PAXOS */
gettext_noop("Replication / Paxos"),
/* QUERY_TUNING */
gettext_noop("Query Tuning"),
/* QUERY_TUNING_METHOD */
gettext_noop("Query Tuning / Planner Method Configuration"),
/* QUERY_TUNING_COST */
gettext_noop("Query Tuning / Planner Cost Constants"),
/* QUERY_TUNING_GEQO */
gettext_noop("Query Tuning / Genetic Query Optimizer"),
/* QUERY_TUNING_OTHER */
gettext_noop("Query Tuning / Other Planner Options"),
/* LOGGING */
gettext_noop("Reporting and Logging"),
/* LOGGING_WHERE */
gettext_noop("Reporting and Logging / Where to Log"),
/* LOGGING_WHEN */
gettext_noop("Reporting and Logging / When to Log"),
/* LOGGING_WHAT */
gettext_noop("Reporting and Logging / What to Log"),
/* AUDIT_OPTIONS */
gettext_noop("Audit Options"),
/* TRANSPARENT_DATA_ENCRYPTION */
gettext_noop("Transparent Data Encryption group"),
/* STATS */
gettext_noop("Statistics"),
/* STATS_MONITORING */
gettext_noop("Statistics / Monitoring"),
/* STATS_COLLECTOR */
gettext_noop("Statistics / Query and Index Statistics Collector"),
/* STREAMING */
gettext_noop("Streaming"),
/* AUTOVACUUM */
gettext_noop("Autovacuum"),
/* JOB_ENABLE */
gettext_noop("Job Schedule"),
/* CLIENT_CONN */
gettext_noop("Client Connection Defaults"),
/* CLIENT_CONN_STATEMENT */
gettext_noop("Client Connection Defaults / Statement Behavior"),
/* CLIENT_CONN_LOCALE */
gettext_noop("Client Connection Defaults / Locale and Formatting"),
/* CLIENT_CONN_OTHER */
gettext_noop("Client Connection Defaults / Other Defaults"),
/* LOCK_MANAGEMENT */
gettext_noop("Lock Management"),
/* COMPAT_OPTIONS */
gettext_noop("Version and Platform Compatibility"),
/* COMPAT_OPTIONS_PREVIOUS */
gettext_noop("Version and Platform Compatibility / Previous openGauss Versions"),
/* COMPAT_OPTIONS_CLIENT */
gettext_noop("Version and Platform Compatibility / Other Platforms and Clients"),
/* ERROR_HANDLING */
gettext_noop("Error Handling"),
/* PRESET_OPTIONS */
gettext_noop("Preset Options"),
/* CUSTOM_OPTIONS */
gettext_noop("Customized Options"),
/* TEXT_SEARCH */
gettext_noop("Text Search Parser Options"),
/* DEVELOPER_OPTIONS */
gettext_noop("Developer Options"),
/* UPGRADE_OPTIONS */
gettext_noop("Upgrade Options"),
/* INSTRUMENTS_OPTIONS */
gettext_noop("Instruments Options"),
gettext_noop("Column Encryption"),
gettext_noop("Compress Options"),
#ifdef PGXC
/* DATA_NODES */
gettext_noop("Datanodes and Connection Pooling"),
/* GTM */
gettext_noop("GTM Connection"),
/* COORDINATORS */
gettext_noop("Coordinator Options"),
/* XC_HOUSEKEEPING_OPTIONS */
gettext_noop("XC Housekeeping Options"),
#endif
/* help_config wants this array to be null-terminated */
NULL};
/*
* Displayable names for GUC variable types (enum config_type)
*
* Note: these strings are deliberately not localized.
*/
const char* const config_type_names[] = {
/* PGC_BOOL */ "bool",
/* PGC_INT */ "integer",
/* PGC_INT64 */ "int64",
/* PGC_REAL */ "real",
/* PGC_STRING */ "string",
/* PGC_ENUM */ "enum"};
/*
* Contents of GUC tables
*
* See src/backend/utils/misc/README for design notes.
*
* TO ADD AN OPTION:
*
* 1. Declare a global variable of type bool, int, double, or char*
* and make use of it.
*
* 2. Decide at what times it's safe to set the option. See guc.h for
* details.
*
* 3. Decide on a name, a default value, upper and lower bounds (if
* applicable), etc.
*
* 4. Add a record below.
*
* 5. Add it to src/backend/utils/misc/postgresql_single.conf.sample or
* src/backend/utils/misc/postgresql_distribute.conf.sample or both,
* if appropriate.
*
* 6. Don't forget to document the option (at least in config.sgml).
*
* 7. If it's a new GUC_LIST option you must edit pg_dumpall.c to ensure
* it is not single quoted at dump time.
*/
/******** option records follow ********/
static void InitUStoreAttr();
static void InitCommonConfigureNames()
{
InitConfigureNamesBool();
InitConfigureNamesInt();
InitConfigureNamesInt64();
InitConfigureNamesReal();
InitConfigureNamesString();
InitConfigureNamesEnum();
return;
}
static void InitConfigureNamesBool()
{
struct config_bool localConfigureNamesBool[] = {
#ifndef ENABLE_MULTIPLE_NODES
{{"enable_auto_clean_unique_sql",
PGC_POSTMASTER,
NODE_SINGLENODE,
INSTRUMENTS_OPTIONS,
gettext_noop("Enable auto clean unique sql entry when the UniqueSQL hash table is full."),
NULL},
&g_instance.attr.attr_common.enable_auto_clean_unique_sql,
false,
NULL,
NULL,
NULL},
#endif
{{"enable_wdr_snapshot",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Enable wdr snapshot"),
NULL},
&u_sess->attr.attr_common.enable_wdr_snapshot,
false,
NULL,
NULL,
NULL},
{{"enable_asp",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Enable active session profile"),
NULL},
&u_sess->attr.attr_common.enable_asp,
true,
NULL,
NULL,
NULL},
{{"enable_stmt_track",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Enable full/slow sql feature"), NULL},
&u_sess->attr.attr_common.enable_stmt_track,
true,
NULL,
NULL,
NULL},
{{"track_stmt_parameter",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Enable to track the parameter of statements"), NULL},
&u_sess->attr.attr_common.track_stmt_parameter,
false,
NULL,
NULL,
NULL},
{{"support_extended_features",
PGC_POSTMASTER,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Enables unofficial supported extended features."),
NULL},
&g_instance.attr.attr_common.support_extended_features,
false,
NULL,
NULL,
NULL},
{{"lastval_supported",
PGC_POSTMASTER,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Enable functionality of lastval() function."),
NULL},
&g_instance.attr.attr_common.lastval_supported,
false,
NULL,
NULL,
NULL},
{{"enable_beta_features",
PGC_USERSET,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Enable features that ever supported in former version ."),
NULL},
&u_sess->attr.attr_common.enable_beta_features,
false,
NULL,
NULL,
NULL},
/* Not for general use --- used by SET SESSION AUTHORIZATION */
{{"is_sysadmin",
PGC_INTERNAL,
NODE_ALL,
UNGROUPED,
gettext_noop("Shows whether the current user is a system admin."),
NULL,
GUC_REPORT | GUC_NO_SHOW_ALL | GUC_NO_RESET_ALL | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.session_auth_is_superuser,
false,
NULL,
NULL,
NULL},
#ifdef USE_BONJOUR
{{"bonjour",
PGC_POSTMASTER,
NODE_ALL,
CONN_AUTH_SETTINGS,
gettext_noop("Enables advertising the server via Bonjour."),
NULL},
&g_instance.attr.attr_common.enable_bonjour,
false,
check_bonjour,
NULL,
NULL},
#endif
{{"ignore_checksum_failure",
PGC_SUSET,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Continues processing after a checksum failure."),
gettext_noop("Detection of a checksum failure normally causes openGauss to "
"report an error, aborting the current transaction. Setting "
"ignore_checksum_failure to true causes the system to ignore the failure "
"(but still report a warning), and continue processing. This "
"behavior could cause crashes or other serious problems. Only "
"has an effect if checksums are enabled."),
GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.ignore_checksum_failure,
false,
NULL,
NULL,
NULL},
{{"log_checkpoints",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHAT,
gettext_noop("Logs each checkpoint."),
NULL},
&u_sess->attr.attr_common.log_checkpoints,
false,
NULL,
NULL,
NULL},
{{"log_disconnections",
PGC_BACKEND,
NODE_ALL,
LOGGING_WHAT,
gettext_noop("Logs end of a session, including duration."),
NULL},
&u_sess->attr.attr_common.Log_disconnections,
false,
NULL,
NULL,
NULL},
{{"debug_assertions",
PGC_USERSET,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Turns on various assertion checks."),
gettext_noop("This is a debugging aid."),
GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.assert_enabled,
#ifdef USE_ASSERT_CHECKING
true,
#else
false,
#endif
check_debug_assertions,
NULL,
NULL},
/*
* security requirements: ordinary users can not set this parameter, promoting the setting level to PGC_SUSET.
*/
{{"exit_on_error",
PGC_SUSET,
NODE_ALL,
ERROR_HANDLING_OPTIONS,
gettext_noop("Terminates session on any error."),
NULL},
&u_sess->attr.attr_common.ExitOnAnyError,
false,
NULL,
NULL,
NULL},
// omit untranslatable char error
{{"omit_encoding_error",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Omits encoding convert error."),
NULL},
&u_sess->attr.attr_common.omit_encoding_error,
false,
NULL,
NULL,
NULL},
{{"log_parser_stats",
PGC_SUSET,
NODE_ALL,
STATS_MONITORING,
gettext_noop("Writes parser performance statistics to the server log."),
NULL},
&u_sess->attr.attr_common.log_parser_stats,
false,
check_stage_log_stats,
NULL,
NULL},
{{"log_planner_stats",
PGC_SUSET,
NODE_ALL,
STATS_MONITORING,
gettext_noop("Writes planner performance statistics to the server log."),
NULL},
&u_sess->attr.attr_common.log_planner_stats,
false,
check_stage_log_stats,
NULL,
NULL},
{{"log_executor_stats",
PGC_SUSET,
NODE_ALL,
STATS_MONITORING,
gettext_noop("Writes executor performance statistics to the server log."),
NULL},
&u_sess->attr.attr_common.log_executor_stats,
false,
check_stage_log_stats,
NULL,
NULL},
{{"log_statement_stats",
PGC_SUSET,
NODE_ALL,
STATS_MONITORING,
gettext_noop("Writes cumulative performance statistics to the server log."),
NULL},
&u_sess->attr.attr_common.log_statement_stats,
false,
check_log_stats,
NULL,
NULL},
{{"track_activities",
PGC_SUSET,
NODE_ALL,
STATS_COLLECTOR,
gettext_noop("Collects information about executing commands."),
gettext_noop("Enables the collection of information on the current "
"executing command of each session, along with "
"the time at which that command began execution.")},
&u_sess->attr.attr_common.pgstat_track_activities,
true,
NULL,
NULL,
NULL},
{{"enable_instr_track_wait",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Collects information about wait status."),
NULL},
&u_sess->attr.attr_common.enable_instr_track_wait,
true,
NULL,
NULL,
NULL},
{{"enable_slow_query_log",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Write slow query log."),
NULL},
&u_sess->attr.attr_common.enable_slow_query_log,
true,
NULL,
NULL,
NULL},
{{"enable_instr_rt_percentile",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Calculate percentile info of sql responstime."),
NULL},
&u_sess->attr.attr_common.enable_instr_rt_percentile,
true,
NULL,
NULL,
NULL},
{{"enable_instr_cpu_timer",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Enables instruments cpu timer functionality."),
NULL},
&u_sess->attr.attr_common.enable_instr_cpu_timer,
true,
NULL,
NULL,
NULL},
{{"track_counts",
PGC_SUSET,
NODE_ALL,
STATS_COLLECTOR,
gettext_noop("Collects statistics on database activity."),
NULL},
&u_sess->attr.attr_common.pgstat_track_counts,
true,
NULL,
NULL,
NULL},
{{"track_sql_count",
PGC_SUSET,
NODE_ALL,
STATS_COLLECTOR,
gettext_noop("Collects query info on database activity."),
NULL},
&u_sess->attr.attr_common.pgstat_track_sql_count,
true,
NULL,
NULL,
NULL},
{{"track_io_timing",
PGC_SUSET,
NODE_ALL,
STATS_COLLECTOR,
gettext_noop("Collects timing statistics for database I/O activity."),
NULL},
&u_sess->attr.attr_common.track_io_timing,
false,
NULL,
NULL,
NULL},
{{"update_process_title",
PGC_INTERNAL,
NODE_ALL,
STATS_COLLECTOR,
gettext_noop("Updates the process title to show the active SQL command."),
gettext_noop(
"Enables updating of the process title every time a new SQL command is received by the server.")},
&u_sess->attr.attr_common.update_process_title,
false,
NULL,
NULL,
NULL},
{{"cache_connection",
PGC_SIGHUP,
NODE_ALL,
RESOURCES,
gettext_noop("pooler cache connection"),
NULL},
&u_sess->attr.attr_common.pooler_cache_connection,
true,
NULL,
NULL,
NULL},
{{"trace_notify",
PGC_USERSET,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Generates debugging output for LISTEN and NOTIFY."),
NULL,
GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.Trace_notify,
false,
NULL,
NULL,
NULL},
{{"log_hostname",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHAT,
gettext_noop("Logs the host name in the connection logs."),
gettext_noop("By default, connection logs only show the IP address "
"of the connecting host. If you want them to show the host name you "
"can turn this on, but depending on your host name resolution "
"setup it might impose a non-negligible performance penalty.")},
&u_sess->attr.attr_common.log_hostname,
false,
NULL,
NULL,
NULL},
{{"transaction_read_only",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets the current transaction's read-only status."),
NULL,
GUC_NO_RESET_ALL | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.XactReadOnly,
false,
check_transaction_read_only,
NULL,
NULL},
{{"logging_collector",
PGC_POSTMASTER,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Starts a subprocess to capture stderr output and/or csvlogs into log files."),
NULL},
&g_instance.attr.attr_common.Logging_collector,
false,
NULL,
NULL,
NULL},
{{"log_truncate_on_rotation",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Truncates existing log files of same name during log rotation."),
NULL},
&u_sess->attr.attr_common.Log_truncate_on_rotation,
false,
NULL,
NULL,
NULL},
#ifdef TRACE_SORT
{{"trace_sort",
PGC_USERSET,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Emits information about resource usage in sorting."),
NULL,
GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.trace_sort,
false,
NULL,
NULL,
NULL},
#endif
{{"integer_datetimes",
PGC_INTERNAL,
NODE_ALL,
PRESET_OPTIONS,
gettext_noop("Datetimes are integer based."),
NULL,
GUC_REPORT | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.integer_datetimes,
#ifdef HAVE_INT64_TIMESTAMP
true,
#else
false,
#endif
NULL,
NULL,
NULL},
{{"archive_mode",
PGC_SIGHUP,
NODE_ALL,
WAL_ARCHIVING,
gettext_noop("Allows archiving of WAL files using archive_command."),
NULL},
&u_sess->attr.attr_common.XLogArchiveMode,
false,
NULL,
NULL,
NULL},
{{"enable_alarm",
PGC_POSTMASTER,
NODE_ALL,
UNGROUPED,
gettext_noop("Enables alarm or not."),
NULL},
&g_instance.attr.attr_common.enable_alarm,
false,
NULL,
NULL,
NULL},
{{"allow_system_table_mods",
PGC_POSTMASTER,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Allows modifications of the structure of system tables."),
NULL,
GUC_NOT_IN_SAMPLE},
&g_instance.attr.attr_common.allowSystemTableMods,
false,
NULL,
NULL,
NULL},
{{"IsInplaceUpgrade",
PGC_SUSET,
NODE_ALL,
UPGRADE_OPTIONS,
gettext_noop("Enable/disable inplace upgrade mode."),
NULL,
GUC_NOT_IN_SAMPLE | GUC_NO_SHOW_ALL | GUC_NO_RESET_ALL | GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.IsInplaceUpgrade,
false,
check_is_upgrade,
assign_is_inplace_upgrade,
NULL},
{{"allow_concurrent_tuple_update",
PGC_USERSET,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Allows concurrent tuple update."),
NULL,
GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.allow_concurrent_tuple_update,
true,
NULL,
NULL,
NULL},
{{"ignore_system_indexes",
PGC_BACKEND,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Disables reading from system indexes."),
gettext_noop("It does not prevent updating the indexes, so it is safe "
"to use. The worst consequence is slowness."),
GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.IgnoreSystemIndexes,
false,
NULL,
NULL,
NULL},
{{"xc_maintenance_mode",
PGC_SUSET,
NODE_ALL,
XC_HOUSEKEEPING_OPTIONS,
gettext_noop("Turns on XC maintenance mode."),
gettext_noop("Can set ON by SET command by system admin.")},
&u_sess->attr.attr_common.xc_maintenance_mode,
false,
check_pgxc_maintenance_mode,
NULL,
NULL},
{{"support_batch_bind",
PGC_SIGHUP,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets to use batch bind-execute for PBE."),
NULL},
&u_sess->attr.attr_common.support_batch_bind,
true,
NULL,
NULL,
NULL},
{{"enable_bbox_dump",
PGC_SIGHUP,
NODE_ALL,
RESOURCES_WORKLOAD,
gettext_noop("Enables bbox_handler to create core dump. "),
NULL},
&u_sess->attr.attr_common.enable_bbox_dump,
true,
NULL,
assign_bbox_coredump,
NULL},
{{"enable_ffic_log",
PGC_POSTMASTER,
NODE_ALL,
RESOURCES_WORKLOAD,
gettext_noop("Enables First Failure Info Capture. "),
NULL},
&g_instance.attr.attr_common.enable_ffic_log,
true,
NULL,
NULL,
NULL},
{{"enable_thread_pool",
PGC_POSTMASTER,
NODE_ALL,
CLIENT_CONN,
gettext_noop("enable to use thread pool. "),
NULL},
&g_instance.attr.attr_common.enable_thread_pool,
false,
NULL,
NULL,
NULL},
{{"enable_global_plancache",
PGC_POSTMASTER,
NODE_ALL,
CLIENT_CONN,
gettext_noop("enable to use global plan cache. "),
NULL},
&g_instance.attr.attr_common.enable_global_plancache,
false,
check_gpc_syscache_threshold,
NULL,
NULL},
#ifdef ENABLE_MULTIPLE_NODES
{{"enable_gpc_grayrelease_mode",
PGC_SIGHUP,
NODE_ALL,
CLIENT_CONN,
gettext_noop("in distribute cluster, enable grayly change guc enable_global_plancache in three stage."),
NULL},
&u_sess->attr.attr_common.enable_gpc_grayrelease_mode,
false,
NULL,
NULL,
NULL},
#endif
{{"enable_global_syscache",
PGC_POSTMASTER,
NODE_ALL,
CLIENT_CONN,
gettext_noop("enable to use global system cache. "), NULL},
&g_instance.attr.attr_common.enable_global_syscache,
true,
NULL,
NULL,
NULL},
{{"enable_router",
PGC_SIGHUP,
NODE_DISTRIBUTE,
CLIENT_CONN,
gettext_noop("enable to use router."),
NULL},
&u_sess->attr.attr_common.enable_router,
false,
NULL,
NULL,
NULL},
{{"data_sync_retry",
PGC_POSTMASTER,
NODE_ALL,
ERROR_HANDLING_OPTIONS,
gettext_noop("Whether to continue running after a failure to sync data files."),
},
&g_instance.attr.attr_common.data_sync_retry,
false,
NULL,
NULL,
NULL},
{{"check_implicit_conversions",
PGC_USERSET,
NODE_ALL,
UNGROUPED,
gettext_noop("check whether there is an implicit conversion on index column"),
NULL},
&u_sess->attr.attr_common.check_implicit_conversions_for_indexcol,
false,
NULL,
NULL,
NULL},
{{"persistent_datanode_connections",
PGC_BACKEND,
NODE_DISTRIBUTE,
DEVELOPER_OPTIONS,
gettext_noop("Session never releases acquired connections."),
NULL,
GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.PersistentConnections,
false,
NULL,
NULL,
NULL},
{{"enable_redistribute",
PGC_SUSET,
NODE_DISTRIBUTE,
XC_HOUSEKEEPING_OPTIONS,
gettext_noop("Enables redistribute at nodes mis-match."),
NULL},
&u_sess->attr.attr_common.enable_redistribute,
false,
NULL,
NULL,
NULL},
{{"enable_tsdb",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
TSDB,
gettext_noop("Enables control tsdb feature."),
NULL},
&g_instance.attr.attr_common.enable_tsdb,
false,
NULL,
NULL,
NULL},
{{"enable_ts_compaction",
PGC_SIGHUP,
NODE_DISTRIBUTE,
TSDB,
gettext_noop("Enables timeseries compaction feature."),
NULL},
&u_sess->attr.attr_common.enable_ts_compaction,
false,
NULL,
NULL,
NULL},
{{"enable_ts_kvmerge",
PGC_SIGHUP,
NODE_DISTRIBUTE,
TSDB,
gettext_noop("Enables timeseries kvmerge feature."),
NULL},
&u_sess->attr.attr_common.enable_ts_kvmerge,
false,
NULL,
NULL,
NULL},
{{"enable_ts_outorder",
PGC_SIGHUP,
NODE_DISTRIBUTE,
TSDB,
gettext_noop("Enables timeseries ourorder feature."),
NULL},
&u_sess->attr.attr_common.enable_ts_outorder,
false,
NULL,
NULL,
NULL},
{{"ts_adaptive_threads",
PGC_SIGHUP,
NODE_DISTRIBUTE,
TSDB,
gettext_noop("Enables compaction give a adaptive number of consumers."),
NULL},
&u_sess->attr.attr_common.ts_adaptive_threads,
false,
NULL,
NULL,
NULL},
{{
"reserve_space_for_nullable_atts",
PGC_USERSET,
NODE_SINGLENODE,
QUERY_TUNING,
gettext_noop("Enable reserve space for nullable attributes, only applicable to ustore."),
NULL
},
&u_sess->attr.attr_storage.reserve_space_for_nullable_atts,
true,
NULL,
NULL,
NULL
},
{{"enable_default_ustore_table",
PGC_USERSET,
NODE_SINGLENODE,
QUERY_TUNING_METHOD,
gettext_noop("Creates all user-defined tables with orientation inplace"),
NULL},
&u_sess->attr.attr_sql.enable_default_ustore_table,
false,
NULL,
NULL,
NULL
},
{{"enable_ustore",
PGC_POSTMASTER,
NODE_SINGLENODE,
QUERY_TUNING_METHOD,
gettext_noop("Enable ustore storage engine"),
NULL},
&g_instance.attr.attr_storage.enable_ustore,
true,
NULL,
NULL,
NULL,
NULL
},
/* End-of-list marker */
{{NULL,
(GucContext)0,
(GucNodeType)0,
(config_group)0,
NULL,
NULL},
NULL,
false,
NULL,
NULL,
NULL}
};
Size bytes = sizeof(localConfigureNamesBool);
u_sess->utils_cxt.ConfigureNamesBool[GUC_ATTR_COMMON] =
(struct config_bool*)MemoryContextAlloc(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB), bytes);
errno_t rc = memcpy_s(u_sess->utils_cxt.ConfigureNamesBool[GUC_ATTR_COMMON], bytes, localConfigureNamesBool, bytes);
securec_check_ss(rc, "\0", "\0");
}
#ifdef ENABLE_QUNIT
/*
* This function is used to store an integer for every thread. we can use __thread to do this, but when we use it,
* GDB complains that it can not find thread local variables sometimes. So, we use this function to bind the integer to
* a thread.
*
* The main idea is that we store an integer on the thread's stack. Actually, the value is stored outside the stack,
* but next to the stack. So the value will not be overwritten when gaussdb is running.
*
* When a thread is started up, we set its stack's boundary to addresses ALIGNED with 16MB. So, no matter how much stack
* space a thread uses, we can find its stack's boundary easily. Just do this: (rsp/16MB + 1)*16MB. We store the value
* here.
*
* In Linux kernel, this method is used to implement current_thread_info(), please refer to the Linux kernel source code
* for more information.
*
* ____
* (K+1)*16MB -> |____| <- (rsp/16MB + 1)*16MB points here, we store the value here
* | |
* | | <- rsp may point here
* | |
* | |
* K*16MB -> |____|
*
* [K*16MB, (K+1)*16MB) is used by the stack. [(K+1)*16MB, (K+1)*16MB)+4] is not used by the stack, so we store
* the value at [(K+1)*16MB, (K+1)*16MB)+4].
*
* When we start a new thread, we allocate a space from K*16MB to (K+1)*16MB+4, and then [K*16MB, (K+1)*16MB) is
* used for the stack of the thread, [(K+1)*16MB, (K+1)*16MB)+4] is used for storing the integer bound to the stack.
* So, the stack's space and the integer's space are not overlapped.
*/
void set_qunit_case_number_hook(int newval, void* extra)
{
if (!IsUnderPostmaster)
return;
size_t size = DEFUALT_STACK_SIZE * 1024L;
Assert(!(size & (size - 1)));
long rsp;
__asm__("movq %%rsp, %0" : "=r"(rsp) :);
rsp = rsp / size + 1;
rsp = rsp * size;
*(int*)rsp = newval;
}
#endif
static void InitConfigureNamesInt()
{
struct config_int localConfigureNamesInt[] = {
{{"archive_timeout",
PGC_SIGHUP,
NODE_ALL,
WAL_ARCHIVING,
gettext_noop("Forces a switch to the next xlog file if a "
"new file has not been started within N seconds."),
NULL,
GUC_UNIT_S},
&u_sess->attr.attr_common.XLogArchiveTimeout,
0,
0,
INT_MAX / 2,
NULL,
NULL,
NULL},
{{"alarm_report_interval",
PGC_SIGHUP,
NODE_ALL,
UNGROUPED,
gettext_noop("Sets the interval time between two alarm report."),
NULL},
&u_sess->attr.attr_common.AlarmReportInterval,
10,
0,
INT_MAX,
NULL,
NULL,
NULL},
{{"log_file_mode",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the file permissions for log files."),
gettext_noop("The parameter value is expected "
"to be a numeric mode specification in the form "
"accepted by the chmod and umask system calls. "
"(To use the customary octal format the number must "
"start with a 0 (zero).)")},
&u_sess->attr.attr_common.Log_file_mode,
0600,
0000,
0777,
NULL,
NULL,
show_log_file_mode},
{{"bbox_dump_count",
PGC_USERSET,
NODE_ALL,
RESOURCES_WORKLOAD,
gettext_noop("Sets the maximum number of core dump created by bbox_handler."),
gettext_noop("This value is set to 8 as default. "),
},
&u_sess->attr.attr_common.bbox_dump_count,
8,
1,
20,
NULL,
NULL,
NULL},
/*
* We use the hopefully-safely-small value of 100kB as the compiled-in
* default for max_stack_depth. InitializeGUCOptions will increase it if
* possible, depending on the actual platform-specific stack limit.
*/
{{"max_stack_depth",
PGC_SUSET,
NODE_ALL,
RESOURCES_MEM,
gettext_noop("Sets the maximum stack depth, in kilobytes."),
NULL,
GUC_UNIT_KB},
&u_sess->attr.attr_common.max_stack_depth,
100,
100,
MAX_KILOBYTES,
check_max_stack_depth,
assign_max_stack_depth,
NULL},
{{"max_files_per_process",
PGC_POSTMASTER,
NODE_ALL,
RESOURCES_KERNEL,
gettext_noop("Sets the maximum number of simultaneously open files for each server process."),
NULL},
&g_instance.attr.attr_common.max_files_per_process,
1000,
25,
INT_MAX,
NULL,
NULL,
NULL},
{{"max_query_retry_times",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets the maximum sql retry times."),
gettext_noop("A value of 0 turns off the retry."),
GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.max_query_retry_times,
0,
0,
20,
NULL,
NULL,
NULL},
{{"statement_timeout",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets the maximum allowed duration of any statement."),
gettext_noop("A value of 0 turns off the timeout."),
GUC_UNIT_MS},
&u_sess->attr.attr_common.StatementTimeout,
0,
0,
INT_MAX,
NULL,
NULL,
NULL},
{{"session_timeout",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Set the maximum allowed duration of any unused session."),
gettext_noop("A value of 0 turns off the timeout."),
GUC_UNIT_S},
&u_sess->attr.attr_common.SessionTimeout,
600,
0,
MAX_SESSION_TIMEOUT,
NULL,
NULL,
NULL},
{{"track_thread_wait_status_interval",
PGC_SUSET,
NODE_ALL,
STATS_COLLECTOR,
gettext_noop("Sets the interval for collecting thread status in pgstat thread, in minute"),
NULL,
GUC_UNIT_MIN},
&u_sess->attr.attr_common.pgstat_collect_thread_status_interval,
30,
0,
24 * 60,
NULL,
NULL,
NULL},
{{"instr_rt_percentile_interval",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Sets the interval for calculating percentile in pgstat thread, in seconds"),
NULL,
GUC_UNIT_S},
&u_sess->attr.attr_common.instr_rt_percentile_interval,
10,
0,
60 * 60,
NULL,
NULL,
NULL},
{{"wdr_snapshot_interval",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Sets the interval for wdr snapshot in snapshot thread, in min"),
NULL,
GUC_UNIT_MIN},
&u_sess->attr.attr_common.wdr_snapshot_interval,
60,
10,
60,
NULL,
NULL,
NULL},
{{"wdr_snapshot_retention_days",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Sets the max time span for wdr snapshot, in seconds"),
NULL},
&u_sess->attr.attr_common.wdr_snapshot_retention_days,
8,
1,
8,
NULL,
NULL,
NULL},
{{"wdr_snapshot_query_timeout",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Sets the timeout for wdr snapshot query, in seconds"),
NULL,
GUC_UNIT_S},
&u_sess->attr.attr_common.wdr_snapshot_query_timeout,
100,
100,
INT_MAX,
NULL,
NULL,
NULL},
{{"asp_sample_num",
PGC_POSTMASTER,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Sets the active session profile max sample nums in buff"),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.asp_sample_num,
100000,
#ifdef ENABLE_MULTIPLE_NODES
10000,
#else
10,
#endif
100000,
NULL,
NULL,
NULL},
{{"asp_sample_interval",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Sets the active session profile interval sample time in buff"),
NULL,
GUC_UNIT_S},
&u_sess->attr.attr_common.asp_sample_interval,
1,
1,
10,
NULL,
NULL,
NULL},
{{"asp_flush_rate",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("every Nth sample to disk, MOD(sample_id, N) = 0 will flush to dist"),
NULL},
&u_sess->attr.attr_common.asp_flush_rate,
10,
1,
10,
NULL,
NULL,
NULL},
{{"asp_retention_days",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("set max retention days for pg_asp"),
NULL},
&u_sess->attr.attr_common.asp_retention_days,
2,
1,
7,
NULL,
NULL,
NULL},
{{"extra_float_digits",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets the number of digits displayed for floating-point values."),
gettext_noop("This affects real, double precision, and geometric data types. "
"The parameter value is added to the standard number of digits "
"(FLT_DIG or DBL_DIG as appropriate).")},
&u_sess->attr.attr_common.extra_float_digits,
0,
-15,
3,
NULL,
NULL,
NULL},
{{"effective_io_concurrency",
#ifdef USE_PREFETCH
PGC_USERSET,
#else
PGC_INTERNAL,
#endif
NODE_ALL,
RESOURCES_ASYNCHRONOUS,
gettext_noop("Number of simultaneous requests that can be handled efficiently by the disk subsystem."),
gettext_noop("For RAID arrays, this should be approximately the number of drive spindles in the array.")},
&u_sess->attr.attr_common.effective_io_concurrency,
#ifdef USE_PREFETCH
1,
0,
1000,
#else
0,
0,
0,
#endif
check_effective_io_concurrency,
assign_effective_io_concurrency,
NULL},
{{"backend_flush_after",
PGC_USERSET,
NODE_ALL,
RESOURCES_ASYNCHRONOUS,
gettext_noop("Number of pages after which previously performed writes are flushed to disk."),
NULL,
GUC_UNIT_BLOCKS},
&u_sess->attr.attr_common.backend_flush_after,
DEFAULT_BACKEND_FLUSH_AFTER,
0,
WRITEBACK_MAX_PENDING_FLUSHES,
NULL,
NULL,
NULL},
{{"log_rotation_age",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Automatic log file rotation will occur after N minutes."),
NULL,
GUC_UNIT_MIN},
&u_sess->attr.attr_common.Log_RotationAge,
HOURS_PER_DAY * MINS_PER_HOUR,
0,
INT_MAX / SECS_PER_MINUTE,
NULL,
NULL,
NULL},
{{"log_rotation_size",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Automatic log file rotation will occur after N kilobytes."),
NULL,
GUC_UNIT_KB},
&u_sess->attr.attr_common.Log_RotationSize,
10 * 1024,
0,
INT_MAX / 1024,
NULL,
NULL,
NULL},
{{"max_function_args",
PGC_INTERNAL,
NODE_ALL,
PRESET_OPTIONS,
gettext_noop("Shows the maximum number of function arguments."),
NULL,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.max_function_args,
FUNC_MAX_ARGS,
FUNC_MAX_ARGS,
FUNC_MAX_ARGS,
NULL,
NULL,
NULL},
{{"max_user_defined_exception",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("GUC parameter of max_user_defined_exception."),
NULL},
&u_sess->attr.attr_common.max_user_defined_exception,
1000,
1000,
1000,
NULL,
NULL,
NULL},
{{"tcp_keepalives_idle",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_OTHER,
gettext_noop("Time between issuing TCP keepalives."),
gettext_noop("A value of 0 uses the system default."),
GUC_UNIT_S},
&u_sess->attr.attr_common.tcp_keepalives_idle,
60,
0,
3600,
NULL,
assign_tcp_keepalives_idle,
show_tcp_keepalives_idle},
{{"tcp_keepalives_interval",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_OTHER,
gettext_noop("Time between TCP keepalive retransmits."),
gettext_noop("A value of 0 uses the system default."),
GUC_UNIT_S},
&u_sess->attr.attr_common.tcp_keepalives_interval,
30,
0,
180,
NULL,
assign_tcp_keepalives_interval,
show_tcp_keepalives_interval},
{{"tcp_keepalives_count",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_OTHER,
gettext_noop("Maximum number of TCP keepalive retransmits."),
gettext_noop("This controls the number of consecutive keepalive retransmits that can be "
"lost before a connection is considered dead. A value of 0 uses the "
"system default."),
},
&u_sess->attr.attr_common.tcp_keepalives_count,
20,
0,
100,
NULL,
assign_tcp_keepalives_count,
show_tcp_keepalives_count},
{{"gin_fuzzy_search_limit",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_OTHER,
gettext_noop("Sets the maximum allowed result for exact search by GIN."),
NULL,
0},
&u_sess->attr.attr_common.GinFuzzySearchLimit,
0,
0,
INT_MAX,
NULL,
NULL,
NULL},
/* Can't be set in postgresql.conf */
{{"server_version_num",
PGC_INTERNAL,
NODE_ALL,
PRESET_OPTIONS,
gettext_noop("Shows the server version as an integer."),
NULL,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.server_version_num,
PG_VERSION_NUM,
PG_VERSION_NUM,
PG_VERSION_NUM,
NULL,
NULL,
NULL},
/* Can't be set in postgresql.conf */
{{"backend_version",
PGC_USERSET,
NODE_DISTRIBUTE,
PRESET_OPTIONS,
gettext_noop("Set and show the backend version as an integer."),
NULL,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.backend_version,
0,
0,
100000,
NULL,
assign_thread_working_version_num,
NULL},
{{"log_temp_files",
PGC_SUSET,
NODE_ALL,
LOGGING_WHAT,
gettext_noop("Logs the use of temporary files larger than this number of kilobytes."),
gettext_noop("Zero logs all files. The default is -1 (turning this feature off)."),
GUC_UNIT_KB},
&u_sess->attr.attr_common.log_temp_files,
-1,
-1,
INT_MAX,
NULL,
NULL,
NULL},
{{"track_activity_query_size",
PGC_POSTMASTER,
NODE_ALL,
RESOURCES_MEM,
gettext_noop("Sets the size reserved for pg_stat_activity.query, in bytes."),
NULL,
},
&g_instance.attr.attr_common.pgstat_track_activity_query_size,
1024,
100,
102400,
NULL,
NULL,
NULL},
{{"ngram_gram_size",
PGC_USERSET,
NODE_ALL,
TEXT_SEARCH,
gettext_noop("N-value for N-gram parser"),
NULL},
&u_sess->attr.attr_common.ngram_gram_size,
2,
1,
4,
NULL,
NULL,
NULL},
{{"fault_mon_timeout",
PGC_SIGHUP,
NODE_ALL,
STATS_MONITORING,
gettext_noop("how many miniutes to monitor lwlock. 0 will disable that"),
NULL,
GUC_UNIT_MIN}, /* minute */
&u_sess->attr.attr_common.fault_mon_timeout,
5,
0,
(24 * 60), /* 1 min ~ 1 day, 0 will disable this thread starting */
NULL,
NULL,
NULL},
{{"max_changes_in_memory",
PGC_POSTMASTER,
NODE_ALL,
UNGROUPED,
gettext_noop("how many memory a transaction can use in reorderbuffer."),
NULL},
&g_instance.attr.attr_common.max_changes_in_memory,
4096,
1,
INT_MAX,
NULL,
NULL,
NULL},
{{"max_cached_tuplebufs",
PGC_POSTMASTER,
NODE_ALL,
UNGROUPED,
gettext_noop("how many memory reorderbuffer can use."),
NULL},
&g_instance.attr.attr_common.max_cached_tuplebufs,
8192,
1,
INT_MAX,
NULL,
NULL,
NULL},
{{"datanode_heartbeat_interval",
PGC_SIGHUP,
NODE_ALL,
WAL_CHECKPOINTS,
gettext_noop("Sets the heartbeat interval of the standby nodes."),
gettext_noop(
"The value is best configured less than half of the wal_receiver_timeout and wal_sender_timeout."),
GUC_UNIT_MS},
&u_sess->attr.attr_common.dn_heartbeat_interval,
1000,
1000,
60 * 1000,
NULL,
NULL,
NULL},
{{"upgrade_mode",
PGC_SIGHUP,
NODE_ALL,
UPGRADE_OPTIONS,
gettext_noop("Indicate the upgrade mode: inplace upgrade mode, grey upgrade mode or not in upgrade."),
NULL,
0},
&u_sess->attr.attr_common.upgrade_mode,
0,
0,
INT_MAX,
NULL,
NULL,
NULL},
{{"instr_unique_sql_count",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Sets the number of entries collected in gs_instr_unique_sql."),
NULL},
&u_sess->attr.attr_common.instr_unique_sql_count,
100,
0,
INT_MAX,
NULL,
assign_instr_unique_sql_count,
NULL},
{{"track_stmt_session_slot",
PGC_SIGHUP,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Sets the number of entries collected for full sql/slow sql in each session."),
NULL},
&u_sess->attr.attr_common.track_stmt_session_slot,
1000,
0,
INT_MAX,
NULL,
NULL,
NULL},
#ifdef ENABLE_QUNIT
{{"qunit_case_number",
PGC_USERSET,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Sets the qunit_case_number."),
gettext_noop("Only QUnit framework uses this guc parameter.")},
&u_sess->utils_cxt.qunit_case_number,
0,
0,
INT_MAX,
NULL,
set_qunit_case_number_hook,
NULL},
#endif
{{"gpc_clean_timeout",
PGC_SIGHUP,
NODE_ALL,
CLIENT_CONN,
gettext_noop("Set the maximum allowed duration of any unused global plancache."),
NULL,
GUC_UNIT_S},
&u_sess->attr.attr_common.gpc_clean_timeout,
30 * 60, /* 30min */
5 * 60, /* 5min */
24 * 60 * 60, /* 24h */
NULL,
NULL,
NULL},
{{"transaction_sync_naptime",
PGC_USERSET,
NODE_DISTRIBUTE,
STATS_MONITORING,
gettext_noop("Sets the timeout to call gs_clean when sync transaction with GTM."),
gettext_noop("A value of 0 turns off the timeout."),
GUC_UNIT_S},
&u_sess->attr.attr_common.transaction_sync_naptime,
30,
0,
INT_MAX / 1000,
NULL,
NULL,
NULL},
{{"transaction_sync_timeout",
PGC_USERSET,
NODE_DISTRIBUTE,
STATS_MONITORING,
gettext_noop("Sets the timeout when sync every transaction with GTM to avoid deadlock sync."),
gettext_noop("A value of 0 turns off the timeout. Please make sure it larger than gs_clean_timeout."),
GUC_UNIT_S},
&u_sess->attr.attr_common.transaction_sync_timeout,
600,
0,
INT_MAX / 1000,
NULL,
NULL,
NULL},
{{"gtm_port",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Port of GTM."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.GtmHostPortArray[0],
6666,
1,
65535,
NULL,
NULL,
NULL},
{{"gtm_port1",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Port of GTM."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.GtmHostPortArray[1],
6665,
1,
65535,
NULL,
NULL,
NULL},
{{"gtm_port2",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Port of GTM."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.GtmHostPortArray[2],
6666,
1,
65535,
NULL,
NULL,
NULL},
{{"gtm_port3",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Port of GTM."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.GtmHostPortArray[3],
6666,
1,
65535,
NULL,
NULL,
NULL},
{{"gtm_port4",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Port of GTM."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.GtmHostPortArray[4],
6666,
1,
65535,
NULL,
NULL,
NULL},
{{"gtm_port5",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Port of GTM."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.GtmHostPortArray[5],
6666,
1,
65535,
NULL,
NULL,
NULL},
{{"gtm_port6",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Port of GTM."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.GtmHostPortArray[6],
6666,
1,
65535,
NULL,
NULL,
NULL},
{{"gtm_port7",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Port of GTM."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.GtmHostPortArray[7],
6666,
1,
65535,
NULL,
NULL,
NULL},
{{"max_datanodes",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
DATA_NODES,
gettext_noop("Maximum number of Datanodes in the cluster."),
gettext_noop("It is not possible to create more Datanodes in the cluster than "
"this maximum number.")},
&g_instance.attr.attr_common.MaxDataNodes,
64,
2,
65535,
NULL,
NULL,
NULL},
{{"session_sequence_cache",
PGC_USERSET,
NODE_DISTRIBUTE,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets current session sequence cache."),
NULL},
&u_sess->attr.attr_common.session_sequence_cache,
10,
1,
INT_MAX,
NULL,
NULL,
NULL},
{{"gtm_connect_timeout",
PGC_SIGHUP,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Sets the max wait time in seconds to connect GTM."),
NULL,
GUC_UNIT_S},
&u_sess->attr.attr_common.gtm_connect_timeout,
2,
1,
INT_MAX,
NULL,
NULL,
NULL},
#ifdef ENABLE_MULTIPLE_NODES
{{"gtm_rw_timeout",
PGC_SIGHUP,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Sets the max time in seconds to wait for a reponse from GTM."),
NULL,
GUC_UNIT_S},
&u_sess->attr.attr_common.gtm_rw_timeout,
60,
1,
INT_MAX,
NULL,
assign_gtm_rw_timeout,
NULL},
#endif
{{"max_datanode_for_plan",
PGC_USERSET,
NODE_DISTRIBUTE,
UNGROUPED,
gettext_noop("The max number of DN datanodes to show plan, 0 means just CN plan."),
NULL},
&u_sess->attr.attr_common.max_datanode_for_plan,
0,
0,
MAX_DN_NODE_NUM,
NULL,
NULL,
NULL},
{{"ts_consumer_workers",
PGC_SIGHUP,
NODE_DISTRIBUTE,
TSDB,
gettext_noop("Enables compaction consumers feature."),
NULL},
&u_sess->attr.attr_common.ts_consumer_workers,
3,
1,
100,
NULL,
NULL,
NULL},
{{"ts_valid_partition",
PGC_SIGHUP,
NODE_DISTRIBUTE,
TSDB,
gettext_noop("Number of partition producer and delete search."),
NULL},
&u_sess->attr.attr_common.ts_valid_partition,
2,
1,
30,
NULL,
NULL,
NULL},
{{"ts_cudesc_threshold",
PGC_SIGHUP,
NODE_DISTRIBUTE,
TSDB,
gettext_noop("If the number of cudesc tuples is larger than "\
"ts_cudesc_threshold, cudesc index will be created by compaction threads."),
NULL},
&u_sess->attr.attr_common.ts_cudesc_threshold,
0,
0,
10000000,
NULL,
NULL,
NULL},
/* End-of-list marker */
{{NULL,
(GucContext)0,
(GucNodeType)0,
(config_group)0,
NULL,
NULL},
NULL,
0,
0,
0,
NULL,
NULL,
NULL}
};
Size bytes = sizeof(localConfigureNamesInt);
u_sess->utils_cxt.ConfigureNamesInt[GUC_ATTR_COMMON] =
(struct config_int*)MemoryContextAlloc(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB), bytes);
errno_t rc = memcpy_s(u_sess->utils_cxt.ConfigureNamesInt[GUC_ATTR_COMMON], bytes, localConfigureNamesInt, bytes);
securec_check_ss(rc, "\0", "\0");
}
static void InitConfigureNamesReal()
{
struct config_real localConfigureNamesReal[] = {
{{"connection_alarm_rate",
PGC_SIGHUP,
NODE_ALL,
UNGROUPED,
gettext_noop("Reports alarm if connection rate overload."),
NULL},
&u_sess->attr.attr_common.ConnectionAlarmRate,
0.9,
0.0,
1.0,
NULL,
NULL,
NULL},
/* End-of-list marker */
{{NULL,
(GucContext)0,
(GucNodeType)0,
(config_group)0,
NULL,
NULL},
NULL,
0.0,
0.0,
0.0,
NULL,
NULL,
NULL}
};
Size bytes = sizeof(localConfigureNamesReal);
u_sess->utils_cxt.ConfigureNamesReal[GUC_ATTR_COMMON] =
(struct config_real*)MemoryContextAlloc(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB), bytes);
errno_t rc = memcpy_s(u_sess->utils_cxt.ConfigureNamesReal[GUC_ATTR_COMMON], bytes, localConfigureNamesReal, bytes);
securec_check_ss(rc, "\0", "\0");
}
static void InitConfigureNamesInt64()
{
struct config_int64 localConfigureNamesInt64[] = {
{{"track_stmt_details_size",
PGC_USERSET,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("the maximum bytes of statement details to be gathered."),
NULL},
&u_sess->attr.attr_common.track_stmt_details_size,
INT64CONST(4096),
INT64CONST(0),
INT64CONST(100000000),
NULL,
NULL,
NULL},
/* End-of-list marker */
{{NULL,
(GucContext)0,
(GucNodeType)0,
(config_group)0,
NULL,
NULL},
NULL,
0,
0,
0,
NULL,
NULL,
NULL}
};
Size bytes = sizeof(localConfigureNamesInt64);
u_sess->utils_cxt.ConfigureNamesInt64[GUC_ATTR_COMMON] =
(struct config_int64*)MemoryContextAlloc(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB), bytes);
errno_t rc = memcpy_s(u_sess->utils_cxt.ConfigureNamesInt64[GUC_ATTR_COMMON], bytes,
localConfigureNamesInt64, bytes);
securec_check_ss(rc, "\0", "\0");
}
static void InitConfigureNamesString()
{
struct config_string localConfigureNamesString[] = {
{{"client_encoding",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets the client's character set encoding."),
NULL,
GUC_IS_NAME | GUC_REPORT},
&u_sess->attr.attr_common.client_encoding_string,
"SQL_ASCII",
check_client_encoding,
assign_client_encoding,
NULL},
{{"log_line_prefix",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHAT,
gettext_noop("Controls information prefixed to each log line."),
gettext_noop("If blank, no prefix is used.")},
&u_sess->attr.attr_common.Log_line_prefix,
"",
NULL,
NULL,
NULL},
{{"log_timezone",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHAT,
gettext_noop("Sets the time zone to use in log messages."),
NULL},
&u_sess->attr.attr_common.log_timezone_string,
"GMT",
check_log_timezone,
assign_log_timezone,
show_log_timezone},
{{"DateStyle",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets the display format for date and time values."),
gettext_noop("Also controls interpretation of ambiguous "
"date inputs."),
GUC_LIST_INPUT | GUC_REPORT},
&u_sess->attr.attr_common.datestyle_string,
"ISO, MDY",
check_datestyle,
assign_datestyle,
NULL},
{{"dynamic_library_path",
PGC_SUSET,
NODE_ALL,
CLIENT_CONN_OTHER,
gettext_noop("Sets the path for dynamically loadable modules."),
gettext_noop("If a dynamically loadable module needs to be opened and "
"the specified name does not have a directory component (i.e., the "
"name does not contain a slash), the system will search this path for "
"the specified file."),
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.Dynamic_library_path,
"$libdir",
NULL,
NULL,
NULL},
#ifdef USE_BONJOUR
{{"bonjour_name",
PGC_POSTMASTER,
NODE_ALL,
CONN_AUTH_SETTINGS,
gettext_noop("Sets the Bonjour service name."),
NULL},
&g_instance.attr.attr_common.bonjour_name,
"",
NULL,
NULL,
NULL},
#endif
/* See main.c about why defaults for LC_foo are not all alike */
{{"lc_collate",
PGC_INTERNAL,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Shows the collation order locale."),
NULL,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.locale_collate,
"C",
NULL,
NULL,
NULL},
{{"lc_ctype",
PGC_INTERNAL,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Shows the character classification and case conversion locale."),
NULL,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.locale_ctype,
"C",
NULL,
NULL,
NULL},
{{"lc_messages",
PGC_SUSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets the language in which messages are displayed."),
NULL},
&u_sess->attr.attr_common.locale_messages,
"",
check_locale_messages,
assign_locale_messages,
NULL},
{{"lc_monetary",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets the locale for formatting monetary amounts."),
NULL},
&u_sess->attr.attr_common.locale_monetary,
"C",
check_locale_monetary,
assign_locale_monetary,
NULL},
{{"lc_numeric",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets the locale for formatting numbers."),
NULL},
&u_sess->attr.attr_common.locale_numeric,
"C",
check_locale_numeric,
assign_locale_numeric,
NULL},
{{"lc_time",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets the locale for formatting date and time values."),
NULL},
&u_sess->attr.attr_common.locale_time,
"C",
check_locale_time,
assign_locale_time,
NULL},
{{"shared_preload_libraries",
PGC_POSTMASTER,
NODE_ALL,
RESOURCES_KERNEL,
gettext_noop("Lists shared libraries to preload into server."),
NULL,
GUC_LIST_INPUT | GUC_LIST_QUOTE | GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.shared_preload_libraries_string,
"security_plugin",
NULL,
NULL,
NULL},
{{"thread_pool_attr",
PGC_POSTMASTER,
NODE_ALL,
CLIENT_CONN,
gettext_noop("Spare Cpu that can not be used in thread pool."),
NULL,
GUC_LIST_INPUT | GUC_LIST_QUOTE | GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.thread_pool_attr,
"16, 2, (nobind)",
NULL,
NULL,
NULL},
{{"thread_pool_stream_attr",
PGC_POSTMASTER,
NODE_ALL,
CLIENT_CONN,
gettext_noop("Spare Cpu that can not be used in thread pool stream."),
NULL,
GUC_LIST_INPUT | GUC_LIST_QUOTE | GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.thread_pool_stream_attr,
"16, 0.2, 2, (nobind)",
NULL,
NULL,
NULL},
{{"comm_proxy_attr",
PGC_POSTMASTER,
NODE_SINGLENODE,
CLIENT_CONN,
gettext_noop("Sets comm_proxy attribute in comm_proxy mode."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.comm_proxy_attr,
"none",
NULL,
NULL,
NULL},
{{"track_stmt_retention_time",
PGC_SIGHUP,
NODE_ALL,
CLIENT_CONN,
gettext_noop("The longest retention time of full SQL and slow query in statement_ history"),
NULL,
GUC_LIST_INPUT | GUC_LIST_QUOTE | GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.track_stmt_retention_time,
"3600,604800",
check_statement_retention_time,
assign_statement_retention_time,
NULL},
{{"router",
PGC_USERSET,
NODE_DISTRIBUTE,
CLIENT_CONN,
gettext_noop("set send node router for sql before unrouter."),
NULL,
GUC_LIST_INPUT},
&u_sess->attr.attr_common.router_att,
"",
check_router_attr,
assign_router_attr,
NULL},
{{"local_preload_libraries",
PGC_BACKEND,
NODE_ALL,
CLIENT_CONN_OTHER,
gettext_noop("Lists shared libraries to preload into each backend."),
NULL,
GUC_LIST_INPUT | GUC_LIST_QUOTE},
&u_sess->attr.attr_common.local_preload_libraries_string,
"",
NULL,
NULL,
NULL},
/* Can't be set in postgresql.conf */
{{"current_logic_cluster",
PGC_INTERNAL,
NODE_ALL,
UNGROUPED,
gettext_noop("Shows current logic cluster."),
NULL,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.current_logic_cluster_name,
NULL,
NULL,
NULL,
show_lcgroup_name},
{{"search_path",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets the schema search order for names that are not schema-qualified."),
NULL,
GUC_LIST_INPUT | GUC_LIST_QUOTE},
&u_sess->attr.attr_common.namespace_search_path,
"\"$user\",public",
check_search_path,
assign_search_path,
NULL},
{{"percentile",
PGC_INTERNAL,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("Sets the percentile of sql responstime that DBA want to know."),
NULL,
GUC_LIST_INPUT | GUC_LIST_QUOTE},
&u_sess->attr.attr_common.percentile_values,
"80,95",
check_percentile,
NULL,
NULL},
{{"nls_timestamp_format",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("defines the default timestamp format to use with the TO_TIMESTAMP functions."),
NULL,
},
&u_sess->attr.attr_common.nls_timestamp_format_string,
"DD-Mon-YYYY HH:MI:SS.FF AM",
NULL,
NULL,
NULL},
{{"current_schema",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets the schema search order for names that are not schema-qualified."),
NULL,
GUC_LIST_INPUT | GUC_LIST_QUOTE},
&u_sess->attr.attr_common.namespace_current_schema,
"\"$user\",public",
check_search_path,
assign_search_path,
NULL},
/* Can't be set in postgresql.conf */
{{"server_encoding",
PGC_INTERNAL,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets the server (database) character set encoding."),
NULL,
GUC_IS_NAME | GUC_REPORT | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.server_encoding_string,
"SQL_ASCII",
NULL,
NULL,
NULL},
/* Can't be set in postgresql.conf */
{{"server_version",
PGC_INTERNAL,
NODE_ALL,
PRESET_OPTIONS,
gettext_noop("Shows the server version."),
NULL,
GUC_REPORT | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.server_version_string,
PG_VERSION,
NULL,
NULL,
NULL},
/* Not for general use --- used by SET ROLE */
{{"role",
PGC_USERSET,
NODE_ALL,
UNGROUPED,
gettext_noop("Sets the current role."),
NULL,
GUC_IS_NAME | GUC_NO_SHOW_ALL | GUC_NO_RESET_ALL | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE |
GUC_NOT_WHILE_SEC_REST},
&u_sess->attr.attr_common.role_string,
"none",
check_role,
assign_role,
show_role},
/* Not for general use --- used by SET SESSION AUTHORIZATION */
{{"session_authorization",
PGC_USERSET,
NODE_ALL,
UNGROUPED,
gettext_noop("Sets the session user name."),
NULL,
GUC_IS_NAME | GUC_REPORT | GUC_NO_SHOW_ALL | GUC_NO_RESET_ALL | GUC_NOT_IN_SAMPLE |
GUC_DISALLOW_IN_FILE | GUC_NOT_WHILE_SEC_REST},
&u_sess->attr.attr_common.session_authorization_string,
NULL,
check_session_authorization,
assign_session_authorization,
NULL},
{{"log_destination",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the destination for server log output."),
gettext_noop("Valid values are combinations of \"stderr\", "
"\"syslog\", \"csvlog\", and \"eventlog\", "
"depending on the platform."),
GUC_LIST_INPUT},
&u_sess->attr.attr_common.log_destination_string,
"stderr",
check_log_destination,
assign_log_destination,
NULL},
{{"log_directory",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the destination directory for log files."),
gettext_noop("Can be specified as relative to the data directory "
"or as absolute path."),
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.Log_directory,
"pg_log",
check_directory,
NULL,
NULL},
{{"asp_log_directory",
PGC_POSTMASTER,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the destination directory for asp log files."),
gettext_noop("Can be specified as relative to the data directory "
"or as absolute path."),
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.asp_log_directory,
NULL,
check_directory,
NULL,
NULL},
{{"query_log_directory",
PGC_POSTMASTER,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the destination directory for slow query log files."),
gettext_noop("Can be specified as relative to the data directory "
"or as absolute path."),
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.query_log_directory,
NULL,
check_directory,
NULL,
NULL},
{{"perf_directory",
PGC_POSTMASTER,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the destination directory for perf json files."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.Perf_directory,
NULL,
check_directory,
NULL,
NULL},
{{"explain_dna_file",
PGC_USERSET,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the destination file for explain performance data."),
gettext_noop("Must be specified as an absolute directory + .csv filename."),
GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.Perf_log,
NULL,
check_perf_log,
NULL,
NULL},
{{"log_filename",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the file name pattern for log files."),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.Log_filename,
"postgresql-%Y-%m-%d_%H%M%S.log",
check_log_filename,
NULL,
NULL},
{{"query_log_file",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the file name pattern for slow query log files."),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.query_log_file,
"slow_query_log-%Y-%m-%d_%H%M%S.log",
NULL,
NULL,
NULL},
{{"asp_flush_mode",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the active session profile flush mode:file/table/all."),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.asp_flush_mode,
"table",
check_asp_flush_mode,
NULL,
NULL},
{{"asp_log_filename",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the file name pattern for asp data files."),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.asp_log_filename,
"asp-%Y-%m-%d_%H%M%S.log",
NULL,
NULL,
NULL},
{{"bbox_dump_path",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the path of core dump created by bbox_handler."),
NULL},
&u_sess->attr.attr_common.bbox_dump_path,
"",
check_bbox_corepath,
assign_bbox_corepath,
show_bbox_dump_path},
{{"alarm_component",
PGC_POSTMASTER,
NODE_ALL,
UNGROUPED,
gettext_noop("Sets the component for alarm function."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.Alarm_component,
"/opt/snas/bin/snas_cm_cmd",
NULL,
NULL,
NULL},
{{"syslog_ident",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the program name used to identify openGauss "
"messages in syslog."),
NULL},
&u_sess->attr.attr_common.syslog_ident_str,
"postgres",
NULL,
assign_syslog_ident,
NULL},
{{"event_source",
PGC_POSTMASTER,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the application name used to identify "
"openGauss messages in the event log."),
NULL},
&g_instance.attr.attr_common.event_source,
"PostgreSQL",
NULL,
NULL,
NULL},
{{"TimeZone",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets the time zone for displaying and interpreting time stamps."),
NULL,
GUC_REPORT},
&u_sess->attr.attr_common.timezone_string,
"GMT",
check_timezone,
assign_timezone,
show_timezone},
{{"timezone_abbreviations",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Selects a file of time zone abbreviations."),
NULL},
&u_sess->attr.attr_common.timezone_abbreviations_string,
NULL,
check_timezone_abbreviations,
assign_timezone_abbreviations,
NULL},
{{"data_directory",
PGC_POSTMASTER,
NODE_ALL,
FILE_LOCATIONS,
gettext_noop("Sets the server's data directory."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.data_directory,
NULL,
NULL,
NULL,
NULL},
{{"config_file",
PGC_POSTMASTER,
NODE_ALL,
FILE_LOCATIONS,
gettext_noop("Sets the server's main configuration file."),
NULL,
GUC_DISALLOW_IN_FILE | GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.ConfigFileName,
NULL,
NULL,
NULL,
NULL},
#ifdef ENABLE_MOT
{{"mot_config_file",
PGC_POSTMASTER,
NODE_SINGLENODE,
FILE_LOCATIONS,
gettext_noop("Sets mot main configuration file."),
NULL,
GUC_DISALLOW_IN_FILE | GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.MOTConfigFileName,
NULL,
NULL,
NULL,
NULL},
#endif
{{"hba_file",
PGC_POSTMASTER,
NODE_ALL,
FILE_LOCATIONS,
gettext_noop("Sets the server's \"hba\" configuration file."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.HbaFileName,
NULL,
NULL,
NULL,
NULL},
{{"ident_file",
PGC_POSTMASTER,
NODE_ALL,
FILE_LOCATIONS,
gettext_noop("Sets the server's \"ident\" configuration file."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.IdentFileName,
NULL,
NULL,
NULL,
NULL},
{{"external_pid_file",
PGC_POSTMASTER,
NODE_ALL,
FILE_LOCATIONS,
gettext_noop("Writes the postmaster PID to the specified file."),
NULL,
GUC_SUPERUSER_ONLY},
&g_instance.attr.attr_common.external_pid_file,
NULL,
check_canonical_path,
NULL,
NULL},
{{"stats_temp_directory",
PGC_SIGHUP,
NODE_ALL,
STATS_COLLECTOR,
gettext_noop("Writes temporary statistics files to the specified directory."),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.pgstat_temp_directory,
"pg_stat_tmp",
check_canonical_path,
assign_pgstat_temp_directory,
NULL},
{{"default_text_search_config",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets default text search configuration."),
NULL},
&u_sess->attr.attr_common.TSCurrentConfig,
"pg_catalog.simple",
check_TSCurrentConfig,
assign_TSCurrentConfig,
NULL},
{{"pgxc_node_name",
PGC_POSTMASTER,
NODE_ALL,
GTM,
gettext_noop("The Coordinator or Datanode name."),
NULL,
GUC_NO_RESET_ALL | GUC_IS_NAME},
&g_instance.attr.attr_common.PGXCNodeName,
"",
NULL,
NULL,
NULL},
#ifdef ENABLE_DISTRIBUTE_TEST
{{"distribute_test_param",
PGC_USERSET,
NODE_DISTRIBUTE,
DEVELOPER_OPTIONS,
gettext_noop("Sets the parameters of distributed test framework."),
NULL,
GUC_LIST_INPUT | GUC_REPORT | GUC_NO_SHOW_ALL},
&u_sess->attr.attr_common.test_param_str,
"-1, default, default",
check_distribute_test_param,
assign_distribute_test_param,
NULL},
#endif
#ifdef ENABLE_SEGMENT_TEST
{{"segment_test_param",
PGC_USERSET,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Sets the parameters of segment test framework."),
NULL,
GUC_LIST_INPUT | GUC_REPORT | GUC_NO_SHOW_ALL},
&u_sess->attr.attr_common.seg_test_param_str,
"-1, default, default",
check_segment_test_param,
assign_segment_test_param,
NULL},
#endif
{{"application_name",
PGC_USERSET,
NODE_ALL,
LOGGING_WHAT,
gettext_noop("Sets the application name to be reported in statistics and logs."),
NULL,
GUC_IS_NAME | GUC_REPORT | GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.application_name,
"",
check_application_name,
assign_application_name,
NULL},
/* analysis options for dfx */
{{"analysis_options",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("enable/disable sql dfx option."),
NULL,
GUC_NOT_IN_SAMPLE},
&u_sess->attr.attr_common.analysis_options,
"off(ALL)",
analysis_options_check,
analysis_options_guc_assign,
analysis_options_guc_show},
{{"transparent_encrypt_kms_url",
PGC_POSTMASTER,
NODE_ALL,
UNGROUPED,
gettext_noop("The URL to get transparent encryption key."),
NULL,
GUC_NOT_IN_SAMPLE | GUC_NO_RESET_ALL},
&g_instance.attr.attr_common.transparent_encrypt_kms_url,
"",
transparent_encrypt_kms_url_region_check,
NULL,
NULL},
{{"numa_distribute_mode",
PGC_POSTMASTER,
NODE_ALL,
RESOURCES,
gettext_noop("Sets the NUMA node distribution mode."),
NULL},
&g_instance.attr.attr_common.numa_distribute_mode,
"none",
check_numa_distribute_mode,
NULL,
NULL},
{{"bbox_blanklist_items",
PGC_POSTMASTER,
NODE_ALL,
RESOURCES_WORKLOAD,
gettext_noop("List of names of bbox blanklist items."),
NULL,
GUC_LIST_INPUT},
&g_instance.attr.attr_common.bbox_blacklist_items,
"",
check_bbox_blacklist,
assign_bbox_blacklist,
show_bbox_blacklist},
{{"track_stmt_stat_level",
PGC_USERSET,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("specify which level statement's statistics to be gathered."),
NULL,
GUC_LIST_INPUT},
&u_sess->attr.attr_common.track_stmt_stat_level,
"OFF,L0",
check_statement_stat_level,
assign_statement_stat_level,
NULL},
#ifdef ENABLE_MULTIPLE_NODES
/* Can't be set in postgresql.conf */
{{"node_group_mode",
PGC_INTERNAL,
NODE_DISTRIBUTE,
UNGROUPED,
gettext_noop("Shows node group mode."),
NULL,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE},
&u_sess->attr.attr_common.node_group_mode,
"node group",
NULL,
NULL,
show_nodegroup_mode},
{{"gtm_host",
PGC_SIGHUP,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Host name or address of GTM"),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.GtmHostInfoStringArray[0],
"localhost",
check_gtmhostconninfo,
assign_gtmhostconninfo0,
NULL},
{{"gtm_host1",
PGC_SIGHUP,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Host name or address of GTM"),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.GtmHostInfoStringArray[1],
"localhost",
check_gtmhostconninfo,
assign_gtmhostconninfo1,
NULL},
{{"gtm_host2",
PGC_SIGHUP,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Host name or address of GTM"),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.GtmHostInfoStringArray[2],
"",
check_gtmhostconninfo,
assign_gtmhostconninfo2,
NULL},
{{"gtm_host3",
PGC_SIGHUP,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Host name or address of GTM"),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.GtmHostInfoStringArray[3],
"",
check_gtmhostconninfo,
assign_gtmhostconninfo3,
NULL},
{{"gtm_host4",
PGC_SIGHUP,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Host name or address of GTM"),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.GtmHostInfoStringArray[4],
"",
check_gtmhostconninfo,
assign_gtmhostconninfo4,
NULL},
{{"gtm_host5",
PGC_SIGHUP,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Host name or address of GTM"),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.GtmHostInfoStringArray[5],
"",
check_gtmhostconninfo,
assign_gtmhostconninfo5,
NULL},
{{"gtm_host6",
PGC_SIGHUP,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Host name or address of GTM"),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.GtmHostInfoStringArray[6],
"",
check_gtmhostconninfo,
assign_gtmhostconninfo6,
NULL},
{{"gtm_host7",
PGC_SIGHUP,
NODE_DISTRIBUTE,
GTM,
gettext_noop("Host name or address of GTM"),
NULL,
GUC_SUPERUSER_ONLY},
&u_sess->attr.attr_common.GtmHostInfoStringArray[7],
"",
check_gtmhostconninfo,
assign_gtmhostconninfo7,
NULL},
{{"ts_compaction_strategy",
PGC_SIGHUP,
NODE_DISTRIBUTE,
TSDB,
gettext_noop("TSDB producer's Strategy for sending task"),
NULL,
GUC_LIST_INPUT | GUC_LIST_QUOTE},
&u_sess->attr.attr_common.ts_compaction_strategy,
"3,6,6,12,0",
check_compaciton_strategy,
NULL},
#endif
{{NULL,
(GucContext)0,
(GucNodeType)0,
(config_group)0,
NULL,
NULL},
NULL,
NULL,
NULL,
NULL,
NULL}
};
Size bytes = sizeof(localConfigureNamesString);
u_sess->utils_cxt.ConfigureNamesString[GUC_ATTR_COMMON] =
(struct config_string*)MemoryContextAlloc(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB), bytes);
errno_t rc = memcpy_s(u_sess->utils_cxt.ConfigureNamesString[GUC_ATTR_COMMON], bytes,
localConfigureNamesString, bytes);
securec_check_ss(rc, "\0", "\0");
}
static void InitConfigureNamesEnum()
{
struct config_enum localConfigureNamesEnum[] = {
#ifndef ENABLE_MULTIPLE_NODES
{{"sync_config_strategy",
PGC_POSTMASTER,
NODE_SINGLENODE,
WAL_SETTINGS,
gettext_noop("Synchronization strategy for configuration files between host and standby."),
NULL},
&g_instance.attr.attr_common.sync_config_strategy,
ALL_NODE,
sync_config_strategy_options,
NULL,
NULL,
NULL},
#endif
{{"bytea_output",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets the output format for bytea."),
NULL},
&u_sess->attr.attr_common.bytea_output,
BYTEA_OUTPUT_HEX,
bytea_output_options,
NULL,
NULL,
NULL},
{{"client_min_messages",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets the message levels that are sent to the client."),
gettext_noop("Each level includes all the levels that follow it. The later"
" the level, the fewer messages are sent.")},
&u_sess->attr.attr_common.client_min_messages,
NOTICE,
client_message_level_options,
check_client_min_messages,
NULL,
NULL},
{{"default_transaction_isolation",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets the transaction isolation level of each new transaction."),
NULL},
&u_sess->attr.attr_common.DefaultXactIsoLevel,
XACT_READ_COMMITTED,
isolation_level_options,
NULL,
NULL,
NULL},
{{"IntervalStyle",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_LOCALE,
gettext_noop("Sets the display format for interval values."),
NULL,
GUC_REPORT},
&u_sess->attr.attr_common.IntervalStyle,
INTSTYLE_POSTGRES,
intervalstyle_options,
NULL,
NULL,
NULL},
{{"log_error_verbosity",
PGC_SUSET,
NODE_ALL,
LOGGING_WHAT,
gettext_noop("Sets the verbosity of logged messages."),
NULL},
&u_sess->attr.attr_common.Log_error_verbosity,
PGERROR_DEFAULT,
log_error_verbosity_options,
NULL,
NULL,
NULL},
{{"log_min_messages",
PGC_SUSET,
NODE_ALL,
LOGGING_WHEN,
gettext_noop("Sets the message levels that are logged."),
gettext_noop("Each level includes all the levels that follow it. The later"
" the level, the fewer messages are sent.")},
&u_sess->attr.attr_common.log_min_messages,
WARNING,
server_message_level_options,
NULL,
NULL,
NULL},
{{"backtrace_min_messages",
PGC_SUSET,
NODE_ALL,
LOGGING_WHEN,
gettext_noop("Sets the message levels for print backtrace that are logged."),
gettext_noop("Each level includes all the levels that follow it. The later"
" the level, the fewer messages are sent.")},
&u_sess->attr.attr_common.backtrace_min_messages,
#ifdef USE_ASSERT_CHECKING
ERROR,
#else
PANIC,
#endif
server_message_level_options,
NULL,
NULL,
NULL},
{{"log_min_error_statement",
PGC_SUSET,
NODE_ALL,
LOGGING_WHEN,
gettext_noop("Causes all statements generating error at or above this level to be logged."),
gettext_noop("Each level includes all the levels that follow it. The later"
" the level, the fewer messages are sent.")},
&u_sess->attr.attr_common.log_min_error_statement,
ERROR,
server_message_level_options,
NULL,
NULL,
NULL},
{{"log_statement",
PGC_SUSET,
NODE_ALL,
LOGGING_WHAT,
gettext_noop("Sets the type of statements logged."),
NULL},
&u_sess->attr.attr_common.log_statement,
LOGSTMT_NONE,
log_statement_options,
NULL,
NULL,
NULL},
{{"syslog_facility",
PGC_SIGHUP,
NODE_ALL,
LOGGING_WHERE,
gettext_noop("Sets the syslog \"facility\" to be used when syslog enabled."),
NULL},
&u_sess->attr.attr_common.syslog_facility,
#ifdef HAVE_SYSLOG
LOG_LOCAL0,
#else
0,
#endif
syslog_facility_options,
NULL,
assign_syslog_facility,
NULL},
{{"session_replication_role",
PGC_SUSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets the session's behavior for triggers and rewrite rules."),
NULL},
&u_sess->attr.attr_common.SessionReplicationRole,
SESSION_REPLICATION_ROLE_ORIGIN,
session_replication_role_options,
NULL,
assign_session_replication_role,
NULL},
{{"trace_recovery_messages",
PGC_SIGHUP,
NODE_ALL,
DEVELOPER_OPTIONS,
gettext_noop("Enables logging of recovery-related debugging information."),
gettext_noop("Each level includes all the levels that follow it. The later"
" the level, the fewer messages are sent.")},
&u_sess->attr.attr_common.trace_recovery_messages,
/*
* client_message_level_options allows too many values, really, but
* it's not worth having a separate options array for this.
*/
LOG,
client_message_level_options,
NULL,
NULL,
NULL},
{{"track_functions",
PGC_SUSET,
NODE_ALL,
STATS_COLLECTOR,
gettext_noop("Collects function-level statistics on database activity."),
NULL},
&u_sess->attr.attr_common.pgstat_track_functions,
TRACK_FUNC_OFF,
track_function_options,
NULL,
NULL,
NULL},
{{"xmlbinary",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets how binary values are to be encoded in XML."),
NULL},
&u_sess->attr.attr_common.xmlbinary,
XMLBINARY_BASE64,
xmlbinary_options,
NULL,
NULL,
NULL},
{{"xmloption",
PGC_USERSET,
NODE_ALL,
CLIENT_CONN_STATEMENT,
gettext_noop("Sets whether XML data in implicit parsing and serialization "
"operations is to be considered as documents or content fragments."),
NULL},
&u_sess->attr.attr_common.xmloption,
XMLOPTION_CONTENT,
xmloption_options,
NULL,
NULL,
NULL},
{{"remotetype",
PGC_BACKEND,
NODE_ALL,
CONN_AUTH,
gettext_noop("Sets the type of openGauss remote connection"),
NULL},
&u_sess->attr.attr_common.remoteConnType,
REMOTE_CONN_APP,
pgxc_conn_types,
NULL,
NULL,
NULL},
{{"instr_unique_sql_track_type",
PGC_INTERNAL,
NODE_ALL,
INSTRUMENTS_OPTIONS,
gettext_noop("unique sql track type"),
NULL},
&u_sess->attr.attr_common.unique_sql_track_type,
UNIQUE_SQL_TRACK_TOP,
unique_sql_track_option,
NULL,
NULL,
NULL},
{{"cluster_run_mode",
PGC_POSTMASTER,
NODE_SINGLENODE,
PRESET_OPTIONS,
gettext_noop("Sets the type of shared storage cluster."),
NULL},
&g_instance.attr.attr_common.cluster_run_mode,
RUN_MODE_PRIMARY,
cluster_run_mode_options,
NULL,
NULL,
NULL},
{{"stream_cluster_run_mode",
PGC_POSTMASTER,
NODE_DISTRIBUTE,
PRESET_OPTIONS,
gettext_noop("Sets the type of streaming cluster."),
NULL},
&g_instance.attr.attr_common.stream_cluster_run_mode,
RUN_MODE_PRIMARY,
cluster_run_mode_options,
NULL,
NULL,
NULL},
/* End-of-list marker */
{{NULL,
(GucContext)0,
(GucNodeType)0,
(config_group)0,
NULL,
NULL},
NULL,
0,
NULL,
NULL,
NULL,
NULL}
};
Size bytes = sizeof(localConfigureNamesEnum);
u_sess->utils_cxt.ConfigureNamesEnum[GUC_ATTR_COMMON] =
(struct config_enum*)MemoryContextAlloc(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB), bytes);
errno_t rc = memcpy_s(u_sess->utils_cxt.ConfigureNamesEnum[GUC_ATTR_COMMON], bytes, localConfigureNamesEnum, bytes);
securec_check_ss(rc, "\0", "\0");
}
/******** end of options list ********/
/*
* To allow continued support of obsolete names for GUC variables, we apply
* the following mappings to any unrecognized name. Note that an old name
* should be mapped to a new one only if the new variable has very similar
* semantics to the old.
*/
static const char* const map_old_guc_names[] = {"sort_mem", "work_mem", "vacuum_mem", "maintenance_work_mem", NULL};
static int guc_var_compare(const void* a, const void* b);
static int guc_name_compare(const char* namea, const char* nameb);
static void InitializeGUCOptionsFromEnvironment(void);
static void InitializeOneGUCOption(struct config_generic* gconf);
static void push_old_value(struct config_generic* gconf, GucAction action);
static void ReportGUCOption(struct config_generic* record);
static void reapply_stacked_values(struct config_generic* variable, struct config_string* pHolder, GucStack* stack,
const char* curvalue, GucContext curscontext, GucSource cursource);
static void ShowGUCConfigOption(const char* name, DestReceiver* dest);
static void ShowAllGUCConfig(const char* likename, DestReceiver* dest);
static char* _ShowOption(struct config_generic* record, bool use_units);
static bool validate_option_array_item(const char* name, const char* value, bool skipIfNoPermissions);
#ifndef ENABLE_MULTIPLE_NODES
static void replace_config_value(char** optlines, char* name, char* value, config_type vartype);
#endif
/*
* Some infrastructure for checking malloc/strdup/realloc calls
*/
static void* guc_malloc(int elevel, size_t size)
{
void* data = NULL;
/* Avoid unportable behavior of malloc(0) */
if (size == 0)
size = 1;
#ifdef FRONTEND
data = malloc(size);
#else
data = MemoryContextAlloc(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB), size);
#endif
if (data == NULL)
ereport(elevel, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("out of memory")));
return data;
}
static void* guc_realloc(int elevel, void* old, size_t size)
{
void* data = NULL;
/* Avoid unportable behavior of realloc(NULL, 0) */
if (old == NULL && size == 0)
size = 1;
#ifdef FRONTEND
data = realloc(old, size);
#else
data = repalloc(old, size);
#endif
if (data == NULL)
ereport(elevel, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("out of memory")));
return data;
}
static char* guc_strdup(int elevel, const char* src)
{
char* data = NULL;
#ifdef FRONTEND
data = strdup(src);
#else
data = MemoryContextStrdup(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB), src);
#endif
if (data == NULL)
ereport(elevel, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("out of memory")));
return data;
}
/*
* Detect whether strval is referenced anywhere in a GUC string item
*/
static bool string_field_used(struct config_string* conf, char* strval)
{
GucStack* stack = NULL;
if (strval == *(conf->variable) || strval == conf->reset_val || strval == conf->boot_val)
return true;
for (stack = conf->gen.stack; stack; stack = stack->prev) {
if (strval == stack->prior.val.stringval || strval == stack->masked.val.stringval)
return true;
}
return false;
}
/*
* Support for assigning to a field of a string GUC item. Free the prior
* value if it's not referenced anywhere else in the item (including stacked
* states).
*/
static void set_string_field(struct config_string* conf, char** field, char* newval)
{
char* oldval = *field;
/* Do the assignment */
*field = newval;
/* Free old value if it's not NULL and isn't referenced anymore */
if (oldval && !string_field_used(conf, oldval)) {
pfree(oldval);
oldval = NULL;
}
}
/*
* Detect whether an "extra" struct is referenced anywhere in a GUC item
*/
static bool extra_field_used(struct config_generic* gconf, void* extra)
{
GucStack* stack = NULL;
if (extra == gconf->extra)
return true;
switch (gconf->vartype) {
case PGC_BOOL:
if (extra == ((struct config_bool*)gconf)->reset_extra)
return true;
break;
case PGC_INT:
if (extra == ((struct config_int*)gconf)->reset_extra)
return true;
break;
case PGC_INT64:
if (extra == ((struct config_int64*)gconf)->reset_extra)
return true;
break;
case PGC_REAL:
if (extra == ((struct config_real*)gconf)->reset_extra)
return true;
break;
case PGC_STRING:
if (extra == ((struct config_string*)gconf)->reset_extra)
return true;
break;
case PGC_ENUM:
if (extra == ((struct config_enum*)gconf)->reset_extra)
return true;
break;
default:
break;
}
for (stack = gconf->stack; stack; stack = stack->prev) {
if (extra == stack->prior.extra || extra == stack->masked.extra)
return true;
}
return false;
}
/*
* Support for assigning to an "extra" field of a GUC item. Free the prior
* value if it's not referenced anywhere else in the item (including stacked
* states).
*/
static void set_extra_field(struct config_generic* gconf, void** field, void* newval)
{
void* oldval = *field;
/* Do the assignment */
*field = newval;
/* Free old value if it's not NULL and isn't referenced anymore */
if (oldval && !extra_field_used(gconf, oldval))
pfree(oldval);
}
/*
* Support for copying a variable's active value into a stack entry.
* The "extra" field associated with the active value is copied, too.
*
* NB: be sure stringval and extra fields of a new stack entry are
* initialized to NULL before this is used, else we'll try to free() them.
*/
static void set_stack_value(struct config_generic* gconf, config_var_value* val)
{
switch (gconf->vartype) {
case PGC_BOOL:
val->val.boolval = *((struct config_bool*)gconf)->variable;
break;
case PGC_INT:
val->val.intval = *((struct config_int*)gconf)->variable;
break;
case PGC_INT64:
val->val.int64val = *((struct config_int64*)gconf)->variable;
break;
case PGC_REAL:
val->val.realval = *((struct config_real*)gconf)->variable;
break;
case PGC_STRING:
set_string_field(
(struct config_string*)gconf, &(val->val.stringval), *((struct config_string*)gconf)->variable);
break;
case PGC_ENUM:
val->val.enumval = *((struct config_enum*)gconf)->variable;
break;
default:
break;
}
set_extra_field(gconf, &(val->extra), gconf->extra);
}
/*
* Support for discarding a no-longer-needed value in a stack entry.
* The "extra" field associated with the stack entry is cleared, too.
*/
static void discard_stack_value(struct config_generic* gconf, config_var_value* val)
{
switch (gconf->vartype) {
case PGC_BOOL:
case PGC_INT:
case PGC_INT64:
case PGC_REAL:
case PGC_ENUM:
/* no need to do anything */
break;
case PGC_STRING:
set_string_field((struct config_string*)gconf, &(val->val.stringval), NULL);
break;
default:
break;
}
set_extra_field(gconf, &(val->extra), NULL);
}
/*
* Fetch the sorted array pointer (exported for help_config.c's use ONLY)
*/
struct config_generic** get_guc_variables(void)
{
return u_sess->guc_variables;
}
#ifndef ENABLE_MULTIPLE_NODES
static void InitSingleNodeUnsupportGuc()
{
/* for Bool Guc Variables */
u_sess->attr.attr_sql.enable_remotejoin = true;
u_sess->attr.attr_sql.enable_fast_query_shipping = true;
u_sess->attr.attr_sql.enable_remotegroup = true;
u_sess->attr.attr_sql.enable_remotesort = true;
u_sess->attr.attr_sql.enable_remotelimit = true;
u_sess->attr.attr_sql.gtm_backup_barrier = false;
u_sess->attr.attr_sql.enable_stream_operator = true;
u_sess->attr.attr_sql.enable_unshipping_log = false;
u_sess->attr.attr_sql.enable_stream_concurrent_update = true;
u_sess->attr.attr_sql.enable_stream_recursive = true;
u_sess->attr.attr_sql.enable_random_datanode = true;
u_sess->attr.attr_sql.enable_fstream = false;
u_sess->attr.attr_common.PersistentConnections = false;
u_sess->attr.attr_network.PoolerForceReuse = false;
u_sess->attr.attr_network.comm_client_bind = false;
u_sess->attr.attr_common.enable_redistribute = false;
u_sess->attr.attr_sql.enable_cluster_resize = false;
u_sess->attr.attr_resource.bypass_workload_manager = false;
u_sess->attr.attr_resource.enable_control_group = true;
u_sess->attr.attr_resource.enable_cgroup_switch = false;
u_sess->attr.attr_resource.enable_verify_statements = true;
u_sess->attr.attr_resource.enable_force_memory_control = false;
u_sess->attr.attr_resource.enable_dywlm_adjust = true;
u_sess->attr.attr_resource.enable_hotkeys_collection = false;
u_sess->attr.attr_resource.enable_reaper_backend = true;
u_sess->attr.attr_resource.enable_transaction_parctl = true;
u_sess->attr.attr_sql.agg_redistribute_enhancement = false;
u_sess->attr.attr_sql.enable_agg_pushdown_for_cooperation_analysis = true;
u_sess->attr.attr_common.update_process_title = false;
u_sess->attr.attr_sql.enable_parallel_ddl = true;
u_sess->attr.attr_sql.enable_nodegroup_debug = false;
u_sess->attr.attr_sql.enable_dngather = false;
u_sess->attr.attr_sql.enable_light_proxy = true;
u_sess->attr.attr_sql.enable_trigger_shipping = true;
u_sess->attr.attr_common.enable_router = false;
/* for Int Guc Variables */
u_sess->attr.attr_common.session_sequence_cache = 10;
u_sess->attr.attr_resource.max_active_statements = -1;
u_sess->attr.attr_resource.dynamic_memory_quota = 80;
u_sess->attr.attr_network.PoolerTimeout = 600;
u_sess->attr.attr_network.PoolerConnectTimeout = 60;
u_sess->attr.attr_network.PoolerCancelTimeout = 15;
u_sess->attr.attr_sql.best_agg_plan = 0;
u_sess->attr.attr_network.comm_max_datanode = 256;
u_sess->attr.attr_common.gtm_connect_timeout = 2;
u_sess->attr.attr_storage.gtm_connect_retries = 30;
u_sess->attr.attr_common.gtm_rw_timeout = 60;
u_sess->attr.attr_storage.gtm_conn_check_interval = 10;
u_sess->attr.attr_common.max_datanode_for_plan = 0;
u_sess->attr.attr_common.max_datanode_for_plan = 0;
u_sess->attr.attr_common.transaction_sync_naptime = 30;
u_sess->attr.attr_common.transaction_sync_timeout = 600;
u_sess->attr.attr_storage.default_index_kind = DEFAULT_INDEX_KIND_GLOBAL;
u_sess->attr.attr_sql.application_type = NOT_PERFECT_SHARDING_TYPE;
/* for Double Guc Variables */
u_sess->attr.attr_sql.stream_multiple = DEFAULT_STREAM_MULTIPLE;
u_sess->attr.attr_sql.max_cn_temp_file_size = 5 * 1024 * 1024;
u_sess->attr.attr_sql.dngather_min_rows = 500.0;
/* for String Guc Variables */
u_sess->attr.attr_common.node_group_mode = (char *)"node group";
u_sess->attr.attr_common.GtmHostInfoStringArray[0] = (char *)"localhost";
u_sess->attr.attr_common.GtmHostInfoStringArray[1] = (char *)"localhost";
u_sess->attr.attr_common.GtmHostInfoStringArray[2] = (char *)"";
u_sess->attr.attr_common.GtmHostInfoStringArray[3] = (char *)"";
u_sess->attr.attr_common.GtmHostInfoStringArray[4] = (char *)"";
u_sess->attr.attr_common.GtmHostInfoStringArray[5] = (char *)"";
u_sess->attr.attr_common.GtmHostInfoStringArray[6] = (char *)"";
u_sess->attr.attr_common.GtmHostInfoStringArray[7] = (char *)"";
u_sess->attr.attr_sql.expected_computing_nodegroup = CNG_OPTION_QUERY;
u_sess->attr.attr_sql.default_storage_nodegroup = INSTALLATION_MODE;
if (!IsUnderPostmaster) {
g_instance.attr.attr_network.PoolerStatelessReuse = false;
g_instance.attr.attr_storage.enable_gtm_free = true;
g_instance.attr.attr_resource.enable_dynamic_workload = false;
g_instance.attr.attr_sql.enable_acceleration_cluster_wlm = false;
g_instance.attr.attr_resource.enable_backend_control = true;
g_instance.attr.attr_resource.enable_vacuum_control = true;
g_instance.attr.attr_resource.enable_perm_space = true;
g_instance.attr.attr_storage.comm_cn_dn_logic_conn = false;
g_instance.attr.attr_network.MaxPoolSize = 400;
g_instance.attr.attr_network.PoolerPort = 6667;
g_instance.attr.attr_common.GtmHostPortArray[0] = 6666;
g_instance.attr.attr_common.GtmHostPortArray[1] = 6665;
g_instance.attr.attr_common.GtmHostPortArray[2] = 6666;
g_instance.attr.attr_common.GtmHostPortArray[3] = 6666;
g_instance.attr.attr_common.GtmHostPortArray[4] = 6666;
g_instance.attr.attr_common.GtmHostPortArray[5] = 6666;
g_instance.attr.attr_common.GtmHostPortArray[6] = 6666;
g_instance.attr.attr_common.GtmHostPortArray[7] = 6666;
g_instance.attr.attr_common.MaxDataNodes = 64;
g_instance.attr.attr_network.MaxCoords = 1024;
g_instance.attr.attr_storage.gtm_option = GTMOPTION_GTMFREE;
g_instance.attr.attr_network.comm_max_stream = 1024;
}
return;
}
#endif
/*
* Build the sorted array. This is split out so that it could be
* re-executed after startup (eg, we could allow loadable modules to
* add vars, and then we'd need to re-sort).
*/
void build_guc_get_variables_num(enum guc_attr_strategy stragety,
int &num_single_vars_out, int &num_both_vars_out, int &num_distribute_vars_out)
{
int i;
/* Bind thread local GUC variables to their names */
if (stragety == GUC_ATTR_COMMON) {
InitCommonConfigureNames();
} else if (stragety == GUC_ATTR_SQL) {
InitSqlConfigureNames();
} else if (stragety == GUC_ATTR_STORAGE) {
InitStorageConfigureNames();
} else if (stragety == GUC_ATTR_SECURITY) {
InitSecurityConfigureNames();
} else if (stragety == GUC_ATTR_NETWORK) {
InitNetworkConfigureNames();
} else if (stragety == GUC_ATTR_MEMORY) {
InitMemoryConfigureNames();
} else if (stragety == GUC_ATTR_RESOURCE) {
InitResourceConfigureNames();
} else {
ereport(ERROR,
(errcode(ERRCODE_INVALID_OPERATION), errmsg("unexpected stragety element: %d", stragety)));
}
InitUStoreAttr();
for (i = 0; u_sess->utils_cxt.ConfigureNamesBool[stragety][i].gen.name; i++) {
struct config_bool* conf = &u_sess->utils_cxt.ConfigureNamesBool[stragety][i];
/* Rather than requiring vartype to be filled in by hand, do this: */
conf->gen.vartype = PGC_BOOL;
count_variables_num(conf->gen.nodetype, num_single_vars_out, num_both_vars_out, num_distribute_vars_out);
}
for (i = 0; u_sess->utils_cxt.ConfigureNamesInt[stragety][i].gen.name; i++) {
struct config_int* conf = &u_sess->utils_cxt.ConfigureNamesInt[stragety][i];
conf->gen.vartype = PGC_INT;
count_variables_num(conf->gen.nodetype, num_single_vars_out, num_both_vars_out, num_distribute_vars_out);
}
for (i = 0; u_sess->utils_cxt.ConfigureNamesReal[stragety][i].gen.name; i++) {
struct config_real* conf = &u_sess->utils_cxt.ConfigureNamesReal[stragety][i];
conf->gen.vartype = PGC_REAL;
count_variables_num(conf->gen.nodetype, num_single_vars_out, num_both_vars_out, num_distribute_vars_out);
}
for (i = 0; u_sess->utils_cxt.ConfigureNamesString[stragety][i].gen.name; i++) {
struct config_string* conf = &u_sess->utils_cxt.ConfigureNamesString[stragety][i];
conf->gen.vartype = PGC_STRING;
count_variables_num(conf->gen.nodetype, num_single_vars_out, num_both_vars_out, num_distribute_vars_out);
}
for (i = 0; u_sess->utils_cxt.ConfigureNamesInt64[stragety][i].gen.name; i++) {
struct config_int64* conf = &u_sess->utils_cxt.ConfigureNamesInt64[stragety][i];
conf->gen.vartype = PGC_INT64;
count_variables_num(conf->gen.nodetype, num_single_vars_out, num_both_vars_out, num_distribute_vars_out);
}
for (i = 0; u_sess->utils_cxt.ConfigureNamesEnum[stragety][i].gen.name; i++) {
struct config_enum* conf = &u_sess->utils_cxt.ConfigureNamesEnum[stragety][i];
conf->gen.vartype = PGC_ENUM;
count_variables_num(conf->gen.nodetype, num_single_vars_out, num_both_vars_out, num_distribute_vars_out);
}
return;
}
static void count_variables_num(GucNodeType nodetype,
int &num_single_vars_out, int &num_both_vars_out, int &num_distribute_vars_out)
{
if (nodetype == NODE_ALL) {
num_both_vars_out++;
} else if (nodetype == NODE_SINGLENODE) {
num_single_vars_out++;
} else if (nodetype == NODE_DISTRIBUTE) {
num_distribute_vars_out++;
} else {
ereport(ERROR,
(errcode(ERRCODE_INVALID_OPERATION), errmsg("unexpected node type: %d", nodetype)));
}
return;
}
void build_guc_variables_internal_bytype(enum guc_attr_strategy stragety, struct config_generic** guc_vars,
int &num_vars, GucNodeType specific_type)
{
int i;
for (i = 0; u_sess->utils_cxt.ConfigureNamesBool[stragety][i].gen.name; i++) {
struct config_generic* gen = &u_sess->utils_cxt.ConfigureNamesBool[stragety][i].gen;
if ((gen->nodetype == NODE_ALL) || (gen->nodetype == specific_type)) {
guc_vars[num_vars++] = gen;
}
}
for (i = 0; u_sess->utils_cxt.ConfigureNamesInt[stragety][i].gen.name; i++) {
struct config_generic* gen = &u_sess->utils_cxt.ConfigureNamesInt[stragety][i].gen;
if ((gen->nodetype == NODE_ALL) || (gen->nodetype == specific_type)) {
guc_vars[num_vars++] = gen;
}
}
for (i = 0; u_sess->utils_cxt.ConfigureNamesReal[stragety][i].gen.name; i++) {
struct config_generic* gen = &u_sess->utils_cxt.ConfigureNamesReal[stragety][i].gen;
if ((gen->nodetype == NODE_ALL) || (gen->nodetype == specific_type)) {
guc_vars[num_vars++] = gen;
}
}
for (i = 0; u_sess->utils_cxt.ConfigureNamesString[stragety][i].gen.name; i++) {
struct config_generic* gen = &u_sess->utils_cxt.ConfigureNamesString[stragety][i].gen;
if ((gen->nodetype == NODE_ALL) || (gen->nodetype == specific_type)) {
guc_vars[num_vars++] = gen;
}
}
for (i = 0; u_sess->utils_cxt.ConfigureNamesInt64[stragety][i].gen.name; i++) {
struct config_generic* gen = &u_sess->utils_cxt.ConfigureNamesInt64[stragety][i].gen;
if ((gen->nodetype == NODE_ALL) || (gen->nodetype == specific_type)) {
guc_vars[num_vars++] = gen;
}
}
for (i = 0; u_sess->utils_cxt.ConfigureNamesEnum[stragety][i].gen.name; i++) {
struct config_generic* gen = &u_sess->utils_cxt.ConfigureNamesEnum[stragety][i].gen;
if ((gen->nodetype == NODE_ALL) || (gen->nodetype == specific_type)) {
guc_vars[num_vars++] = gen;
}
}
return;
}
void build_guc_variables_internal(struct config_generic** guc_vars)
{
int stragety;
bool flag = false;
int num_vars = 0;
#ifdef ENABLE_MULTIPLE_NODES
flag = true;
#endif
for (stragety = 0; stragety < MAX_GUC_ATTR; stragety++) {
GucNodeType nodetype;
if (flag) {
nodetype = NODE_DISTRIBUTE;
} else {
nodetype = NODE_SINGLENODE;
}
build_guc_variables_internal_bytype(guc_attr_strategy(stragety), guc_vars, num_vars, nodetype);
}
return;
}
void build_guc_variables(void)
{
struct config_generic** guc_vars;
int single_vars_num = 0;
int multi_vars_num = 0;
int size_vars = 0;
int num_vars = 0;
int both_vars_num = 0;
build_guc_get_variables_num(GUC_ATTR_SQL, single_vars_num, both_vars_num, multi_vars_num);
build_guc_get_variables_num(GUC_ATTR_STORAGE, single_vars_num, both_vars_num, multi_vars_num);
build_guc_get_variables_num(GUC_ATTR_SECURITY, single_vars_num, both_vars_num, multi_vars_num);
build_guc_get_variables_num(GUC_ATTR_NETWORK, single_vars_num, both_vars_num, multi_vars_num);
build_guc_get_variables_num(GUC_ATTR_MEMORY, single_vars_num, both_vars_num, multi_vars_num);
build_guc_get_variables_num(GUC_ATTR_RESOURCE, single_vars_num, both_vars_num, multi_vars_num);
build_guc_get_variables_num(GUC_ATTR_COMMON, single_vars_num, both_vars_num, multi_vars_num);
#ifdef ENABLE_MULTIPLE_NODES
num_vars = both_vars_num + multi_vars_num;
#else
num_vars = single_vars_num + both_vars_num;
#endif
/*
* Create table with 20% slack
*/
size_vars = num_vars + num_vars / 4;
guc_vars = (struct config_generic**)guc_malloc(FATAL, size_vars * sizeof(struct config_generic*));
build_guc_variables_internal(guc_vars);
if (u_sess->guc_variables)
pfree(u_sess->guc_variables);
u_sess->guc_variables = guc_vars;
u_sess->num_guc_variables = num_vars;
u_sess->utils_cxt.size_guc_variables = size_vars;
qsort((void*)u_sess->guc_variables, u_sess->num_guc_variables, sizeof(struct config_generic*), guc_var_compare);
return;
}
/*
* Add a new GUC variable to the list of known variables. The
* list is expanded if needed.
*/
static bool add_guc_variable(struct config_generic* var, int elevel)
{
if (u_sess->num_guc_variables + 1 >= u_sess->utils_cxt.size_guc_variables) {
/*
* Increase the vector by 25%
*/
int size_vars = u_sess->utils_cxt.size_guc_variables + u_sess->utils_cxt.size_guc_variables / 4;
struct config_generic** guc_vars;
if (size_vars == 0) {
size_vars = 100;
guc_vars = (struct config_generic**)guc_malloc(elevel, size_vars * sizeof(struct config_generic*));
} else {
guc_vars = (struct config_generic**)guc_realloc(
elevel, u_sess->guc_variables, size_vars * sizeof(struct config_generic*));
}
if (guc_vars == NULL)
return false; /* out of memory */
u_sess->guc_variables = guc_vars;
u_sess->utils_cxt.size_guc_variables = size_vars;
}
u_sess->guc_variables[u_sess->num_guc_variables++] = var;
qsort((void*)u_sess->guc_variables, u_sess->num_guc_variables, sizeof(struct config_generic*), guc_var_compare);
return true;
}
/*
* Create and add a placeholder variable for a custom variable name.
*/
static struct config_generic* add_placeholder_variable(const char* name, int elevel)
{
size_t sz = sizeof(struct config_string) + sizeof(char*);
struct config_string* var = NULL;
struct config_generic* gen = NULL;
var = (struct config_string*)guc_malloc(elevel, sz);
if (var == NULL)
return NULL;
errno_t rc = memset_s(var, sz, 0, sz);
securec_check(rc, "\0", "\0");
gen = &var->gen;
gen->name = guc_strdup(elevel, name);
if (gen->name == NULL) {
pfree(var);
return NULL;
}
gen->context = PGC_USERSET;
gen->group = CUSTOM_OPTIONS;
gen->short_desc = "GUC placeholder variable";
gen->flags = GUC_NO_SHOW_ALL | GUC_NOT_IN_SAMPLE | GUC_CUSTOM_PLACEHOLDER;
gen->vartype = PGC_STRING;
/*
* The char* is allocated at the end of the struct since we have no
* 'static' place to point to. Note that the current value, as well as
* the boot and reset values, start out NULL.
*/
var->variable = (char**)(var + 1);
if (!add_guc_variable((struct config_generic*)var, elevel)) {
pfree((void*)gen->name);
pfree(var);
return NULL;
}
return gen;
}
/*
* Look up option NAME. If it exists, return a pointer to its record,
* else return NULL. If create_placeholders is TRUE, we'll create a
* placeholder record for a valid-looking custom variable name.
*/
static struct config_generic* find_option(const char* name, bool create_placeholders, int elevel)
{
const char** key = &name;
struct config_generic** res;
int i;
Assert(name);
/*
* By equating const char ** with struct config_generic *, we are assuming
* the name field is first in config_generic.
*/
res = (struct config_generic**)bsearch((void*)&key,
(void*)u_sess->guc_variables,
u_sess->num_guc_variables,
sizeof(struct config_generic*),
guc_var_compare);
if (res != NULL)
return *res;
/*
* See if the name is an obsolete name for a variable. We assume that the
* set of supported old names is short enough that a brute-force search is
* the best way.
*/
for (i = 0; map_old_guc_names[i] != NULL; i += 2) {
if (guc_name_compare(name, map_old_guc_names[i]) == 0)
return find_option(map_old_guc_names[i + 1], false, elevel);
}
if (create_placeholders) {
/*
* Check if the name is qualified, and if so, add a placeholder.
*/
if (strchr(name, GUC_QUALIFIER_SEPARATOR) != NULL)
return add_placeholder_variable(name, elevel);
}
/* Unknown name */
return NULL;
}
/*
* comparator for qsorting and bsearching guc_variables array
*/
static int guc_var_compare(const void* a, const void* b)
{
const struct config_generic* confa = *(struct config_generic* const*)a;
const struct config_generic* confb = *(struct config_generic* const*)b;
return guc_name_compare(confa->name, confb->name);
}
/*
* the bare comparison function for GUC names
*/
static int guc_name_compare(const char* namea, const char* nameb)
{
/*
* The temptation to use strcasecmp() here must be resisted, because the
* array ordering has to remain stable across setlocale() calls. So, build
* our own with a simple ASCII-only downcasing.
*/
while (*namea && *nameb) {
char cha = *namea++;
char chb = *nameb++;
if (cha >= 'A' && cha <= 'Z')
cha += 'a' - 'A';
if (chb >= 'A' && chb <= 'Z')
chb += 'a' - 'A';
if (cha != chb)
return cha - chb;
}
if (*namea)
return 1; /* a is longer */
if (*nameb)
return -1; /* b is longer */
return 0;
}
/*
* Initiaize Postmaster level GUC options during postmaster proc.
*
* Note that some guc can't get right value because of some global var not init,
* so need this function to init postmaster level guc.
*/
void InitializePostmasterGUC()
{
#ifdef ENABLE_MULTIPLE_NODES
(void)check_enable_gtm_free(&g_instance.attr.attr_storage.enable_gtm_free, NULL, PGC_S_DEFAULT);
#else
g_instance.attr.attr_storage.enable_gtm_free = true;
#endif
g_instance.attr.attr_network.PoolerPort = g_instance.attr.attr_network.PostPortNumber + 1;
}
/*
* Initialize GUC options during program startup.
*
* Note that we cannot read the config file yet, since we have not yet
* processed command-line switches.
*/
void InitializeGUCOptions(void)
{
int i;
/*
* Before log_line_prefix could possibly receive a nonempty setting, make
* sure that timezone processing is minimally alive (see elog.c).
*/
pg_timezone_initialize();
/*
* Build sorted array of all GUC variables.
*/
build_guc_variables();
/*
* Load all variables with their compiled-in defaults, and initialize
* status fields as needed.
*/
GucContext oldContext = currentGucContext;
currentGucContext = PGC_POSTMASTER;
for (i = 0; i < u_sess->num_guc_variables; i++) {
InitializeOneGUCOption(u_sess->guc_variables[i]);
}
currentGucContext = oldContext;
#ifndef ENABLE_MULTIPLE_NODES
InitSingleNodeUnsupportGuc();
#endif
u_sess->utils_cxt.guc_dirty = false;
u_sess->utils_cxt.reporting_enabled = false;
/*
* Prevent any attempt to override the transaction modes from
* non-interactive sources.
*/
SetConfigOption("transaction_isolation", "default", PGC_POSTMASTER, PGC_S_OVERRIDE);
SetConfigOption("transaction_read_only", "no", PGC_POSTMASTER, PGC_S_OVERRIDE);
SetConfigOption("transaction_deferrable", "no", PGC_POSTMASTER, PGC_S_OVERRIDE);
/*
* For historical reasons, some GUC parameters can receive defaults from
* environment variables. Process those settings.
*/
InitializeGUCOptionsFromEnvironment();
}
/*
* Assign any GUC values that can come from the server's environment.
*
* This is called from InitializeGUCOptions, and also from ProcessConfigFile
* to deal with the possibility that a setting has been removed from
* postgresql.conf and should now get a value from the environment.
* (The latter is a kludge that should probably go away someday; if so,
* fold this back into InitializeGUCOptions.)
*/
static void InitializeGUCOptionsFromEnvironment(void)
{
char* env = NULL;
long stack_rlimit;
env = gs_getenv_r("PGPORT");
if (env != NULL) {
check_backend_env(env);
SetConfigOption("port", env, PGC_POSTMASTER, PGC_S_ENV_VAR);
}
env = gs_getenv_r("PGDATESTYLE");
if (env != NULL) {
check_backend_env(env);
SetConfigOption("datestyle", env, PGC_POSTMASTER, PGC_S_ENV_VAR);
}
env = gs_getenv_r("PGCLIENTENCODING");
if (env != NULL) {
check_backend_env(env);
SetConfigOption("client_encoding", env, PGC_POSTMASTER, PGC_S_ENV_VAR);
}
/*
* rlimit isn't exactly an "environment variable", but it behaves about
* the same. If we can identify the platform stack depth rlimit, increase
* default stack depth setting up to whatever is safe (but at most 2MB).
*/
stack_rlimit = get_stack_depth_rlimit();
if (stack_rlimit > 0) {
long new_limit = (stack_rlimit - STACK_DEPTH_SLOP) / 1024L;
if (new_limit > 100) {
char limbuf[16];
new_limit = Min(new_limit, 2048);
int rcs = snprintf_s(limbuf, sizeof(limbuf), sizeof(limbuf) - 1, "%ld", new_limit);
securec_check_ss(rcs, "\0", "\0");
SetConfigOption("max_stack_depth", limbuf, PGC_POSTMASTER, PGC_S_ENV_VAR);
}
}
}
/*
* Initialize one GUC option variable to its compiled-in default.
*
* Note: the reason for calling check_hooks is not that we think the boot_val
* might fail, but that the hooks might wish to compute an "extra" struct.
*/
static void InitializeOneGUCOption(struct config_generic* gconf)
{
gconf->status = 0;
gconf->source = PGC_S_DEFAULT;
gconf->reset_source = PGC_S_DEFAULT;
gconf->scontext = PGC_INTERNAL;
gconf->reset_scontext = PGC_INTERNAL;
gconf->stack = NULL;
gconf->extra = NULL;
gconf->sourcefile = NULL;
gconf->sourceline = 0;
switch (gconf->vartype) {
case PGC_BOOL: {
struct config_bool* conf = (struct config_bool*)gconf;
bool newval = conf->boot_val;
void* extra = NULL;
if (!call_bool_check_hook(conf, &newval, &extra, PGC_S_DEFAULT, LOG))
ereport(FATAL, (errmsg("failed to initialize %s to %d", conf->gen.name, (int)newval)));
if (conf->assign_hook)
(*conf->assign_hook)(newval, extra);
if (!IsUnderPostmaster || gconf->context != PGC_POSTMASTER) {
*conf->variable = conf->reset_val = newval;
}
conf->gen.extra = conf->reset_extra = extra;
break;
}
case PGC_INT: {
struct config_int* conf = (struct config_int*)gconf;
int newval = conf->boot_val;
void* extra = NULL;
Assert(newval >= conf->min);
Assert(newval <= conf->max);
if (!call_int_check_hook(conf, &newval, &extra, PGC_S_DEFAULT, LOG))
ereport(FATAL, (errmsg("failed to initialize %s to %d", conf->gen.name, newval)));
if (conf->assign_hook)
(*conf->assign_hook)(newval, extra);
if (!IsUnderPostmaster || gconf->context != PGC_POSTMASTER) {
*conf->variable = conf->reset_val = newval;
}
conf->gen.extra = conf->reset_extra = extra;
break;
}
case PGC_INT64: {
struct config_int64* conf = (struct config_int64*)gconf;
int64 newval = conf->boot_val;
void* extra = NULL;
Assert(newval >= conf->min);
Assert(newval <= conf->max);
if (!call_int64_check_hook(conf, &newval, &extra, PGC_S_DEFAULT, LOG))
ereport(FATAL, (errmsg("failed to initialize %s to " INT64_FORMAT, conf->gen.name, newval)));
if (conf->assign_hook)
(*conf->assign_hook)(newval, extra);
if (!IsUnderPostmaster || gconf->context != PGC_POSTMASTER) {
*conf->variable = conf->reset_val = newval;
}
conf->gen.extra = conf->reset_extra = extra;
break;
}
case PGC_REAL: {
struct config_real* conf = (struct config_real*)gconf;
double newval = conf->boot_val;
void* extra = NULL;
Assert(newval >= conf->min);
Assert(newval <= conf->max);
if (!call_real_check_hook(conf, &newval, &extra, PGC_S_DEFAULT, LOG))
ereport(FATAL, (errmsg("failed to initialize %s to %g", conf->gen.name, newval)));
if (conf->assign_hook)
(*conf->assign_hook)(newval, extra);
if (!IsUnderPostmaster || gconf->context != PGC_POSTMASTER) {
*conf->variable = conf->reset_val = newval;
}
conf->gen.extra = conf->reset_extra = extra;
break;
}
case PGC_STRING: {
struct config_string* conf = (struct config_string*)gconf;
char* newval = NULL;
void* extra = NULL;
/* non-NULL boot_val must always get strdup'd */
if (conf->boot_val != NULL)
newval = guc_strdup(FATAL, conf->boot_val);
else
newval = NULL;
if (!call_string_check_hook(conf, &newval, &extra, PGC_S_DEFAULT, LOG)) {
pfree_ext(newval);
#ifdef ENABLE_UT
return;
#else
ereport(FATAL, (errmsg("failed to initialize %s to \"%s\"", conf->gen.name, newval ? newval : "")));
#endif
}
if (conf->assign_hook)
(*conf->assign_hook)(newval, extra);
if (!IsUnderPostmaster || gconf->context != PGC_POSTMASTER) {
*conf->variable = conf->reset_val = newval;
}
conf->gen.extra = conf->reset_extra = extra;
break;
}
case PGC_ENUM: {
struct config_enum* conf = (struct config_enum*)gconf;
int newval = conf->boot_val;
void* extra = NULL;
if (!call_enum_check_hook(conf, &newval, &extra, PGC_S_DEFAULT, LOG))
ereport(FATAL, (errmsg("failed to initialize %s to %d", conf->gen.name, newval)));
if (conf->assign_hook)
(*conf->assign_hook)(newval, extra);
if (!IsUnderPostmaster || gconf->context != PGC_POSTMASTER) {
*conf->variable = conf->reset_val = newval;
}
conf->gen.extra = conf->reset_extra = extra;
break;
}
default:
break;
}
}
/*initialize guc variables which need to be sended to stream threads*/
void init_sync_guc_variables()
{
int i;
struct config_generic** res;
int sync_guc_number = lengthof(sync_guc_variable_namelist);
u_sess->utils_cxt.sync_guc_variables =
(struct config_generic**)palloc(sizeof(struct config_generic*) * sync_guc_number);
for (i = 0; i < sync_guc_number; i++) {
const char** key = &sync_guc_variable_namelist[i];
res = (struct config_generic**)bsearch((void*)&key,
(void*)u_sess->guc_variables,
u_sess->num_guc_variables,
sizeof(struct config_generic*),
guc_var_compare);
Assert(res);
u_sess->utils_cxt.sync_guc_variables[i] = *res;
}
}
/*repair the guc variables in stream thread*/
void repair_guc_variables()
{
int i;
struct config_generic** res;
int sync_guc_number = lengthof(sync_guc_variable_namelist);
for (i = 0; i < sync_guc_number; i++) {
const char** key = &sync_guc_variable_namelist[i];
res = (struct config_generic**)bsearch((void*)&key,
(void*)u_sess->guc_variables,
u_sess->num_guc_variables,
sizeof(struct config_generic*),
guc_var_compare);
Assert(res);
switch ((*res)->vartype) {
case PGC_BOOL: {
struct config_bool* destination = (struct config_bool*)(*res);
struct config_bool* source = (struct config_bool*)u_sess->utils_cxt.sync_guc_variables[i];
bool newval = false;
void* newextra = NULL;
if (*destination->variable == *source->variable)
break;
newval = *source->variable;
if (destination->check_hook) {
if (!call_bool_check_hook(destination, &newval, &newextra, destination->gen.source, LOG)) {
ereport(LOG,
(errmsg("Failed to initialize %s to %s for stream thread",
destination->gen.name,
newval ? "true" : "false")));
break;
}
}
if (destination->assign_hook)
(*destination->assign_hook)(newval, newextra);
*destination->variable = *source->variable;
set_extra_field(&destination->gen, &destination->gen.extra, newextra);
break;
}
case PGC_INT: {
struct config_int* destination = (struct config_int*)(*res);
struct config_int* source = (struct config_int*)u_sess->utils_cxt.sync_guc_variables[i];
int newval;
void* newextra = NULL;
if (*destination->variable == *source->variable)
break;
newval = *source->variable;
if (destination->check_hook) {
if (!call_int_check_hook(destination, &newval, &newextra, destination->gen.source, LOG)) {
ereport(LOG,
(errmsg("Failed to initialize %s to %d for stream thread", destination->gen.name, newval)));
break;
}
}
if (destination->assign_hook)
(*destination->assign_hook)(newval, newextra);
*destination->variable = *source->variable;
set_extra_field(&destination->gen, &destination->gen.extra, newextra);
break;
}
case PGC_INT64: {
struct config_int64* destination = (struct config_int64*)(*res);
struct config_int64* source = (struct config_int64*)u_sess->utils_cxt.sync_guc_variables[i];
int64 newval;
void* newextra = NULL;
if (*destination->variable == *source->variable)
break;
newval = *source->variable;
if (destination->check_hook) {
if (!call_int64_check_hook(destination, &newval, &newextra, destination->gen.source, LOG)) {
ereport(LOG,
(errmsg("Failed to initialize %s to " INT64_FORMAT " for stream thread",
destination->gen.name,
newval)));
break;
}
}
if (destination->assign_hook)
(*destination->assign_hook)(newval, newextra);
*destination->variable = *source->variable;
set_extra_field(&destination->gen, &destination->gen.extra, newextra);
break;
}
case PGC_REAL: {
struct config_real* destination = (struct config_real*)(*res);
struct config_real* source = (struct config_real*)u_sess->utils_cxt.sync_guc_variables[i];
double newval;
void* newextra = NULL;
if (*destination->variable == *source->variable)
break;
newval = *source->variable;
if (destination->check_hook) {
if (!call_real_check_hook(destination, &newval, &newextra, destination->gen.source, LOG)) {
ereport(LOG,
(errmsg("Failed to initialize %s to %g for stream thread", destination->gen.name, newval)));
break;
}
}
if (destination->assign_hook)
(*destination->assign_hook)(newval, newextra);
*destination->variable = *source->variable;
set_extra_field(&destination->gen, &destination->gen.extra, newextra);
break;
}
case PGC_STRING: {
struct config_string* destination = (struct config_string*)(*res);
struct config_string* source = (struct config_string*)u_sess->utils_cxt.sync_guc_variables[i];
char* newval = NULL;
void* newextra = NULL;
if (strlen(*destination->variable) == strlen(*source->variable) &&
0 == strncmp(*destination->variable, *source->variable, strlen(*destination->variable)))
break;
newval = guc_strdup(FATAL, *source->variable);
if (destination->check_hook) {
if (!call_string_check_hook(destination, &newval, &newextra, destination->gen.source, LOG)) {
ereport(LOG,
(errmsg("Failed to initialize %s to \"%s\" for stream thread",
destination->gen.name,
newval ? newval : "")));
pfree_ext(newval);
break;
}
}
if (destination->assign_hook)
(*destination->assign_hook)(newval, newextra);
set_string_field(destination, destination->variable, newval);
set_extra_field(&destination->gen, &destination->gen.extra, newextra);
break;
}
case PGC_ENUM: {
struct config_enum* destination = (struct config_enum*)(*res);
struct config_enum* source = (struct config_enum*)u_sess->utils_cxt.sync_guc_variables[i];
int newval;
void* newextra = NULL;
if (*destination->variable == *source->variable)
break;
newval = *source->variable;
if (destination->check_hook) {
if (!call_enum_check_hook(destination, &newval, &newextra, destination->gen.source, LOG)) {
ereport(LOG,
(errmsg("Failed to initialize %s to %d for stream thread", destination->gen.name, newval)));
break;
}
}
if (destination->assign_hook)
(*destination->assign_hook)(newval, newextra);
*destination->variable = *source->variable;
set_extra_field(&destination->gen, &destination->gen.extra, newextra);
break;
}
default:
break;
}
}
SetThreadLocalGUC(u_sess);
}
/*
* Select the configuration files and data directory to be used, and
* do the initial read of postgresql.conf.
*
* This is called after processing command-line switches.
* userDoption is the -D switch value if any (NULL if unspecified).
* progname is just for use in error messages.
*
* Returns true on success; on failure, prints a suitable error message
* to stderr and returns false.
*/
bool SelectConfigFiles(const char* userDoption, const char* progname)
{
char* configdir = NULL;
char* fname = NULL;
struct stat stat_buf;
#ifdef ENABLE_MOT
char* motfname = NULL;
#endif
char* TempConfigPath = NULL;
char TempConfigFile[MAXPGPATH] = {0};
char TempConfigFileName[MAXPGPATH] = {0};
int rc;
/* configdir is -D option, or $PGDATA if no -D */
if (userDoption != NULL)
configdir = make_absolute_path(userDoption);
else {
char* pgdata = gs_getenv_r("PGDATA");
if (backend_env_valid(pgdata, "PGDATA") == false) {
ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("Incorrect backend environment variable $PGDATA"),
errdetail("Please refer to the backend instance log for the detail")));
}
configdir = make_absolute_path(pgdata);
}
/*
* Find the configuration file: if config_file was specified on the
* command line, use it, else use configdir/postgresql.conf. In any case
* ensure the result is an absolute path, so that it will be interpreted
* the same way by future backends.
*/
if (g_instance.attr.attr_common.ConfigFileName)
fname = make_absolute_path(g_instance.attr.attr_common.ConfigFileName);
else if (configdir != NULL) {
fname = (char*)guc_malloc(FATAL, strlen(configdir) + strlen(CONFIG_FILENAME) + 2);
rc = snprintf_s(fname,
strlen(configdir) + strlen(CONFIG_FILENAME) + 2,
strlen(configdir) + strlen(CONFIG_FILENAME) + 1,
"%s/%s",
configdir,
CONFIG_FILENAME);
securec_check_ss(rc, configdir, "\0");
} else {
write_stderr("%s does not know where to find the server configuration file.\n"
"You must specify the --config-file or -D invocation "
"option or set the PGDATA environment variable.\n",
progname);
return false;
}
/*
* Set the g_instance.attr.attr_common.ConfigFileName GUC variable to its final value, ensuring that
* it can't be overridden later.
*/
SetConfigOption("config_file", fname, PGC_POSTMASTER, PGC_S_OVERRIDE);
pfree(fname);
/*
* Now read the config file for the first time.
*/
if (g_instance.attr.attr_common.ConfigFileName != NULL &&
stat(g_instance.attr.attr_common.ConfigFileName, &stat_buf) != 0) {
int str_len = strlen(g_instance.attr.attr_common.ConfigFileName);
rc = strncpy_s(
TempConfigFile, MAXPGPATH, g_instance.attr.attr_common.ConfigFileName, Min(str_len, MAXPGPATH - 1));
securec_check(rc, configdir, "\0");
if (str_len > MAXPGPATH - 1) {
ereport(WARNING, (errmsg("strncpy_s failed")));
}
TempConfigPath = TempConfigFile;
get_parent_directory(TempConfigPath);
rc = snprintf_s(TempConfigFileName, MAXPGPATH, MAXPGPATH - 1, "%s/%s", TempConfigPath, CONFIG_BAK_FILENAME);
securec_check_ss(rc, configdir, "\0");
if (lstat(TempConfigFileName, &stat_buf) != 0) {
write_stderr("%s cannot access the server configuration file \"%s\": %s\n",
progname,
g_instance.attr.attr_common.ConfigFileName,
gs_strerror(errno));
pfree(configdir);
return false;
} else {
char **optLines = read_guc_file(TempConfigFileName);
if (optLines == NULL) {
ereport(LOG, (errmsg("the config file has no data,please check it.")));
pfree(configdir);
return false;
}
ErrCode ret = write_guc_file(g_instance.attr.attr_common.ConfigFileName, optLines);
release_opt_lines(optLines);
optLines = NULL;
if (ret == CODE_OK) {
ereport(LOG,
(errmsg("the config file %s recover success.", g_instance.attr.attr_common.ConfigFileName)));
} else {
write_stderr("%s: recover file %s to %s failed \n", progname, TempConfigFileName,
g_instance.attr.attr_common.ConfigFileName);
pfree(configdir);
return false;
}
}
}
ProcessConfigFile(PGC_POSTMASTER);
most_available_sync = (volatile bool)u_sess->attr.attr_storage.guc_most_available_sync;
/*
* If the data_directory GUC variable has been set, use that as t_thrd.proc_cxt.DataDir;
* otherwise use configdir if set; else punt.
*
* Note: SetDataDir will copy and absolute-ize its argument, so we don't
* have to.
*/
if (g_instance.attr.attr_common.data_directory)
SetDataDir(g_instance.attr.attr_common.data_directory);
else if (configdir != NULL)
SetDataDir(configdir);
else {
write_stderr("%s does not know where to find the database system data.\n"
"This can be specified as \"data_directory\" in \"%s\", "
"or by the -D invocation option, or by the "
"PGDATA environment variable.\n",
progname,
g_instance.attr.attr_common.ConfigFileName);
return false;
}
/*
* Reflect the final t_thrd.proc_cxt.DataDir value back into the data_directory GUC var.
* (If you are wondering why we don't just make them a single variable,
* it's because the EXEC_BACKEND case needs t_thrd.proc_cxt.DataDir to be transmitted to
* child backends specially. XXX is that still true? Given that we now
* chdir to t_thrd.proc_cxt.DataDir, EXEC_BACKEND can read the config file without knowing
* t_thrd.proc_cxt.DataDir in advance.)
*/
SetConfigOption("data_directory", t_thrd.proc_cxt.DataDir, PGC_POSTMASTER, PGC_S_OVERRIDE);
#ifdef ENABLE_MOT
if (g_instance.attr.attr_common.MOTConfigFileName)
motfname = make_absolute_path(g_instance.attr.attr_common.MOTConfigFileName);
else if (configdir) {
motfname = (char*)guc_malloc(FATAL, strlen(configdir) + strlen(MOT_CONFIG_FILENAME) + 2);
rc = snprintf_s(motfname,
strlen(configdir) + strlen(MOT_CONFIG_FILENAME) + 2,
strlen(configdir) + strlen(MOT_CONFIG_FILENAME) + 1,
"%s/%s",
configdir,
MOT_CONFIG_FILENAME);
securec_check_ss(rc, configdir, "\0");
}
SetConfigOption("mot_config_file", motfname, PGC_POSTMASTER, PGC_S_OVERRIDE);
selfpfree(motfname);
#endif
/*
* If timezone_abbreviations wasn't set in the configuration file, install
* the default value. We do it this way because we can't safely install a
* "real" value until my_exec_path is set, which may not have happened
* when InitializeGUCOptions runs, so the bootstrap default value cannot
* be the real desired default.
*/
pg_timezone_abbrev_initialize();
/*
* Figure out where pg_hba.conf is, and make sure the path is absolute.
*/
if (g_instance.attr.attr_common.HbaFileName)
fname = make_absolute_path(g_instance.attr.attr_common.HbaFileName);
else if (configdir != NULL) {
fname = (char*)guc_malloc(FATAL, strlen(configdir) + strlen(HBA_FILENAME) + 2);
rc = snprintf_s(fname,
strlen(configdir) + strlen(HBA_FILENAME) + 2,
strlen(configdir) + strlen(HBA_FILENAME) + 1,
"%s/%s",
configdir,
HBA_FILENAME);
securec_check_ss(rc, configdir, "\0");
} else {
write_stderr("%s does not know where to find the \"hba\" configuration file.\n"
"This can be specified as \"hba_file\" in \"%s\", "
"or by the -D invocation option, or by the "
"PGDATA environment variable.\n",
progname,
g_instance.attr.attr_common.ConfigFileName);
return false;
}
SetConfigOption("hba_file", fname, PGC_POSTMASTER, PGC_S_OVERRIDE);
pfree(fname);
/*
* Likewise for pg_ident.conf.
*/
if (g_instance.attr.attr_common.IdentFileName)
fname = make_absolute_path(g_instance.attr.attr_common.IdentFileName);
else if (configdir != NULL) {
fname = (char*)guc_malloc(FATAL, strlen(configdir) + strlen(IDENT_FILENAME) + 2);
rc = snprintf_s(fname,
strlen(configdir) + strlen(IDENT_FILENAME) + 2,
strlen(configdir) + strlen(IDENT_FILENAME) + 1,
"%s/%s",
configdir,
IDENT_FILENAME);
securec_check_ss(rc, configdir, "\0");
} else {
write_stderr("%s does not know where to find the \"ident\" configuration file.\n"
"This can be specified as \"ident_file\" in \"%s\", "
"or by the -D invocation option, or by the "
"PGDATA environment variable.\n",
progname,
g_instance.attr.attr_common.ConfigFileName);
return false;
}
SetConfigOption("ident_file", fname, PGC_POSTMASTER, PGC_S_OVERRIDE);
pfree(fname);
pfree(configdir);
// shared_buffers is 32MB for dummyStandby
//
if (dummyStandbyMode)
g_instance.attr.attr_storage.NBuffers = (int)(32 * 1024 * 1024 / BLCKSZ);
return true;
}
/*
* Reset all options to their saved default values (implements RESET ALL)
*/
bool check_options_need_reset(struct config_generic* gconf)
{
/* Don't reset non-SET-able values */
if (gconf->context != PGC_SUSET && gconf->context != PGC_USERSET)
return false;
/* Don't reset if special exclusion from RESET ALL */
if (gconf->flags & GUC_NO_RESET_ALL)
return false;
/* No need to reset if wasn't SET */
if (gconf->source <= PGC_S_OVERRIDE)
return false;
return true;
}
void ResetAllOptions(void)
{
int i;
for (i = 0; i < u_sess->num_guc_variables; i++) {
struct config_generic* gconf = u_sess->guc_variables[i];
if (!check_options_need_reset(gconf)) {
continue;
}
/* Save old value to support transaction abort */
push_old_value(gconf, GUC_ACTION_SET);
switch (gconf->vartype) {
case PGC_BOOL: {
struct config_bool* conf = (struct config_bool*)gconf;
if (conf->assign_hook)
(*conf->assign_hook)(conf->reset_val, conf->reset_extra);
*conf->variable = conf->reset_val;
set_extra_field(&conf->gen, &conf->gen.extra, conf->reset_extra);
break;
}
case PGC_INT: {
struct config_int* conf = (struct config_int*)gconf;
if (conf->assign_hook)
(*conf->assign_hook)(conf->reset_val, conf->reset_extra);
*conf->variable = conf->reset_val;
set_extra_field(&conf->gen, &conf->gen.extra, conf->reset_extra);
break;
}
case PGC_INT64: {
struct config_int64* conf = (struct config_int64*)gconf;
if (conf->assign_hook)
(*conf->assign_hook)(conf->reset_val, conf->reset_extra);
*conf->variable = conf->reset_val;
set_extra_field(&conf->gen, &conf->gen.extra, conf->reset_extra);
break;
}
case PGC_REAL: {
struct config_real* conf = (struct config_real*)gconf;
if (conf->assign_hook)
(*conf->assign_hook)(conf->reset_val, conf->reset_extra);
*conf->variable = conf->reset_val;
set_extra_field(&conf->gen, &conf->gen.extra, conf->reset_extra);
break;
}
case PGC_STRING: {
struct config_string* conf = (struct config_string*)gconf;
if (conf->assign_hook)
(*conf->assign_hook)(conf->reset_val, conf->reset_extra);
set_string_field(conf, conf->variable, conf->reset_val);
set_extra_field(&conf->gen, &conf->gen.extra, conf->reset_extra);
break;
}
case PGC_ENUM: {
struct config_enum* conf = (struct config_enum*)gconf;
if (conf->assign_hook)
(*conf->assign_hook)(conf->reset_val, conf->reset_extra);
*conf->variable = conf->reset_val;
set_extra_field(&conf->gen, &conf->gen.extra, conf->reset_extra);
break;
}
default:
break;
}
gconf->source = gconf->reset_source;
gconf->scontext = gconf->reset_scontext;
if (gconf->flags & GUC_REPORT)
ReportGUCOption(gconf);
}
if (IS_PGXC_COORDINATOR) {
PoolAgent* agent = (PoolAgent*)u_sess->pgxc_cxt.poolHandle;
if (agent == NULL) {
return;
}
agent_reset_session(agent, (bool)POOL_CMD_LOCAL_SET);
}
}
/*
* push_old_value
* Push previous state during transactional assignment to a GUC variable.
*/
static void push_old_value(struct config_generic* gconf, GucAction action)
{
GucStack* stack = NULL;
/* If we're not inside a nest level, do nothing */
if (u_sess->utils_cxt.GUCNestLevel == 0)
return;
/* Do we already have a stack entry of the current nest level? */
stack = gconf->stack;
if (stack != NULL && stack->nest_level >= u_sess->utils_cxt.GUCNestLevel) {
switch (action) {
case GUC_ACTION_SET:
/* SET overrides any prior action at same nest level */
if (stack->state == GUC_SET_LOCAL) {
/* must discard old masked value */
discard_stack_value(gconf, &stack->masked);
}
stack->state = GUC_SET;
break;
case GUC_ACTION_LOCAL:
if (stack->state == GUC_SET) {
/* SET followed by SET LOCAL, remember SET's value */
stack->masked_scontext = gconf->scontext;
set_stack_value(gconf, &stack->masked);
stack->state = GUC_SET_LOCAL;
}
/* in all other cases, no change to stack entry */
break;
case GUC_ACTION_SAVE:
/* Could only have a prior SAVE of same variable */
Assert(stack->state == GUC_SAVE);
break;
default:
break;
}
Assert(u_sess->utils_cxt.guc_dirty); /* must be set already */
return;
}
/*
* Push a new stack entry
*
* We keep all the stack entries in u_sess->top_transaction_mem_cxt for simplicity.
*/
stack = (GucStack*)MemoryContextAllocZero(u_sess->top_transaction_mem_cxt, sizeof(GucStack));
stack->prev = gconf->stack;
stack->nest_level = u_sess->utils_cxt.GUCNestLevel;
switch (action) {
case GUC_ACTION_SET:
stack->state = GUC_SET;
break;
case GUC_ACTION_LOCAL:
stack->state = GUC_LOCAL;
break;
case GUC_ACTION_SAVE:
stack->state = GUC_SAVE;
break;
default:
break;
}
stack->source = gconf->source;
stack->scontext = gconf->scontext;
set_stack_value(gconf, &stack->prior);
gconf->stack = stack;
/* Ensure we remember to pop at end of xact */
u_sess->utils_cxt.guc_dirty = true;
}
/*
* Do GUC processing at main transaction start.
*/
void AtStart_GUC(void)
{
/*
* The nest level should be 0 between transactions; if it isn't, somebody
* didn't call AtEOXact_GUC, or called it with the wrong nestLevel. We
* throw a warning but make no other effort to clean up.
*/
if (u_sess->utils_cxt.GUCNestLevel != 0)
ereport(WARNING, (errmsg("GUC nest level = %d at transaction start", u_sess->utils_cxt.GUCNestLevel)));
u_sess->utils_cxt.GUCNestLevel = 1;
reset_set_message(false);
}
/*
* Enter a new nesting level for GUC values. This is called at subtransaction
* start, and when entering a function that has proconfig settings, and in
* some other places where we want to set GUC variables transiently.
* NOTE we must not risk error here, else subtransaction start will be unhappy.
*/
int NewGUCNestLevel(void)
{
return ++u_sess->utils_cxt.GUCNestLevel;
}
char* GetGucName(const char *command, char *targeGucName)
{
unsigned int rpos, lpos, i, j, commandLen, gucNums;
if (command == NULL || targeGucName == NULL) {
return NULL;
}
commandLen = (unsigned int)strlen(command);
lpos = rpos = gucNums = 0;
/* Find the name location. */
for (i = 1; i < commandLen; i++) {
if (command[i] == '=') {
gucNums++;
}
if (gucNums == 0) {
if (command[i - 1] == ' ' && command[i] != ' ') {
lpos = i;
}
if (command[i - 1] != ' ' && command[i] == ' ') {
rpos = i - 1;
}
}
}
if (gucNums == 0 || gucNums > 1 || lpos >= rpos || (rpos - lpos + 1 > MAX_PARAM_LEN)) {
return NULL;
}
/* fill name */
for (i = lpos, j = 0; i <= rpos; i++) {
targeGucName[j++] = command[i];
}
targeGucName[j] = '\0';
MODULE_LOG_TRACE(MOD_COMM_PARAM,
"get pooler session params: command[%s], params name[%s]", command, targeGucName);
return targeGucName;
}
/*
* Do GUC processing at transaction or subtransaction commit or abort, or
* when exiting a function that has proconfig settings, or when undoing a
* transient assignment to some GUC variables. (The name is thus a bit of
* a misnomer; perhaps it should be ExitGUCNestLevel or some such.)
* During abort, we discard all GUC settings that were applied at nesting
* levels >= nestLevel. nestLevel == 1 corresponds to the main transaction.
*/
void AtEOXact_GUC(bool isCommit, int nestLevel)
{
bool still_dirty = false;
int i;
/*
* Note: it's possible to get here with GUCNestLevel == nestLevel-1 during
* abort, if there is a failure during transaction start before
* AtStart_GUC is called.
*/
Assert(nestLevel > 0 && (nestLevel <= u_sess->utils_cxt.GUCNestLevel ||
(nestLevel == u_sess->utils_cxt.GUCNestLevel + 1 && !isCommit)));
/* Quick exit if nothing's changed in this transaction */
if (!u_sess->utils_cxt.guc_dirty) {
u_sess->utils_cxt.GUCNestLevel = nestLevel - 1;
return;
}
for (i = 0; i < u_sess->num_guc_variables; i++) {
struct config_generic* gconf = u_sess->guc_variables[i];
GucStack* stack = NULL;
/*
* Process and pop each stack entry within the nest level. To simplify
* fmgr_security_definer() and other places that use GUC_ACTION_SAVE,
* we allow failure exit from code that uses a local nest level to be
* recovered at the surrounding transaction or subtransaction abort;
* so there could be more than one stack entry to pop.
*/
while ((stack = gconf->stack) != NULL && stack->nest_level >= nestLevel) {
GucStack* prev = stack->prev;
bool restorePrior = false;
bool restoreMasked = false;
bool changed = false;
/*
* In this next bit, if we don't set either restorePrior or
* restoreMasked, we must "discard" any unwanted fields of the
* stack entries to avoid leaking memory. If we do set one of
* those flags, unused fields will be cleaned up after restoring.
*/
if (!isCommit) /* if abort, always restore prior value */
restorePrior = true;
else if (stack->state == GUC_SAVE)
restorePrior = true;
else if (stack->nest_level == 1) {
/* transaction commit */
if (stack->state == GUC_SET_LOCAL)
restoreMasked = true;
else if (stack->state == GUC_SET) {
/* we keep the current active value */
discard_stack_value(gconf, &stack->prior);
} else /* must be GUC_LOCAL */
restorePrior = true;
} else if (prev == NULL || prev->nest_level < stack->nest_level - 1) {
/* decrement entry's level and do not pop it */
stack->nest_level--;
continue;
} else {
/*
* We have to merge this stack entry into prev. See README for
* discussion of this bit.
*/
switch (stack->state) {
case GUC_SAVE:
Assert(false); /* can't get here */
case GUC_SET:
/* next level always becomes SET */
discard_stack_value(gconf, &stack->prior);
if (prev->state == GUC_SET_LOCAL)
discard_stack_value(gconf, &prev->masked);
prev->state = GUC_SET;
break;
case GUC_LOCAL:
if (prev->state == GUC_SET) {
/* LOCAL migrates down */
prev->masked_scontext = stack->scontext;
prev->masked = stack->prior;
prev->state = GUC_SET_LOCAL;
} else {
/* else just forget this stack level */
discard_stack_value(gconf, &stack->prior);
}
break;
case GUC_SET_LOCAL:
/* prior state at this level no longer wanted */
discard_stack_value(gconf, &stack->prior);
/* copy down the masked state */
prev->masked_scontext = stack->masked_scontext;
if (prev->state == GUC_SET_LOCAL)
discard_stack_value(gconf, &prev->masked);
prev->masked = stack->masked;
prev->state = GUC_SET_LOCAL;
break;
default:
break;
}
}
changed = false;
if (restorePrior || restoreMasked) {
/* Perform appropriate restoration of the stacked value */
config_var_value newvalue;
GucSource newsource;
GucContext newscontext;
if (restoreMasked) {
newvalue = stack->masked;
newsource = PGC_S_SESSION;
newscontext = stack->masked_scontext;
} else {
newvalue = stack->prior;
newsource = stack->source;
newscontext = stack->scontext;
}
switch (gconf->vartype) {
case PGC_BOOL: {
struct config_bool* conf = (struct config_bool*)gconf;
bool newval = newvalue.val.boolval;
void* newextra = newvalue.extra;
if (*conf->variable != newval || conf->gen.extra != newextra) {
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
*conf->variable = newval;
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
changed = true;
}
break;
}
case PGC_INT: {
struct config_int* conf = (struct config_int*)gconf;
int newval = newvalue.val.intval;
void* newextra = newvalue.extra;
if (*conf->variable != newval || conf->gen.extra != newextra) {
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
*conf->variable = newval;
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
changed = true;
}
break;
}
case PGC_INT64: {
struct config_int64* conf = (struct config_int64*)gconf;
int64 newval = newvalue.val.int64val;
void* newextra = newvalue.extra;
if (*conf->variable != newval || conf->gen.extra != newextra) {
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
*conf->variable = newval;
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
changed = true;
}
break;
}
case PGC_REAL: {
struct config_real* conf = (struct config_real*)gconf;
double newval = newvalue.val.realval;
void* newextra = newvalue.extra;
if (*conf->variable != newval || conf->gen.extra != newextra) {
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
*conf->variable = newval;
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
changed = true;
}
break;
}
case PGC_STRING: {
struct config_string* conf = (struct config_string*)gconf;
char* newval = newvalue.val.stringval;
void* newextra = newvalue.extra;
if (*conf->variable != newval || conf->gen.extra != newextra) {
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
set_string_field(conf, conf->variable, newval);
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
changed = true;
}
/*
* Release stacked values if not used anymore. We
* could use discard_stack_value() here, but since
* we have type-specific code anyway, might as
* well inline it.
*/
set_string_field(conf, &stack->prior.val.stringval, NULL);
set_string_field(conf, &stack->masked.val.stringval, NULL);
break;
}
case PGC_ENUM: {
struct config_enum* conf = (struct config_enum*)gconf;
int newval = newvalue.val.enumval;
void* newextra = newvalue.extra;
if (*conf->variable != newval || conf->gen.extra != newextra) {
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
*conf->variable = newval;
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
changed = true;
}
break;
}
default:
break;
}
/*
* Release stacked extra values if not used anymore.
*/
set_extra_field(gconf, &(stack->prior.extra), NULL);
set_extra_field(gconf, &(stack->masked.extra), NULL);
/* And restore source information */
gconf->source = newsource;
gconf->scontext = newscontext;
}
/* Finish popping the state stack */
gconf->stack = prev;
pfree(stack);
/* Report new value if we changed it */
if (changed && (gconf->flags & GUC_REPORT))
ReportGUCOption(gconf);
} /* end of stack-popping loop */
if (stack != NULL)
still_dirty = true;
}
/* If there are no remaining stack entries, we can reset guc_dirty */
u_sess->utils_cxt.guc_dirty = still_dirty;
/* Update nesting level */
u_sess->utils_cxt.GUCNestLevel = nestLevel - 1;
/*
* Send set command which is in transactionBlock to pool
*
* During inplace upgrade, we don't need to set agent and DNs'
* GUC at prepare or commit. These connections will always be closed.
*/
if (isCommit && nestLevel == 1 && !u_sess->attr.attr_common.IsInplaceUpgrade) {
const char* setStr = get_set_string();
if (setStr != NULL) {
char tmpName[MAX_PARAM_LEN + 1] = {0};
const char *gucName = GetGucName(setStr, tmpName);
int rs = PoolManagerSetCommand(POOL_CMD_GLOBAL_SET, setStr, gucName);
if (rs < 0) {
ereport(ERROR,
(errcode(ERRCODE_CONNECTION_EXCEPTION),
errmsg("Communication failure, failed to send set commands to pool in transaction commit.")));
}
}
/* reset input_set_message when current transaction is in top level and isCommit is true.*/
reset_set_message(isCommit);
}
SetThreadLocalGUC(u_sess);
}
/*
* Start up automatic reporting of changes to variables marked GUC_REPORT.
* This is executed at completion of backend startup.
*/
void BeginReportingGUCOptions(void)
{
int i;
/*
* Don't do anything unless talking to an interactive frontend of protocol
* 3.0 or later.
*/
if (t_thrd.postgres_cxt.whereToSendOutput != DestRemote || PG_PROTOCOL_MAJOR(FrontendProtocol) < 3)
return;
u_sess->utils_cxt.reporting_enabled = true;
/* Transmit initial values of interesting variables */
for (i = 0; i < u_sess->num_guc_variables; i++) {
struct config_generic* conf = u_sess->guc_variables[i];
if (conf->flags & GUC_REPORT)
ReportGUCOption(conf);
}
}
/*
* ReportGUCOption: if appropriate, transmit option value to frontend
*/
static void ReportGUCOption(struct config_generic* record)
{
if (u_sess->utils_cxt.reporting_enabled && (record->flags & GUC_REPORT)) {
char* val = _ShowOption(record, false);
StringInfoData msgbuf;
pq_beginmessage(&msgbuf, 'S');
pq_sendstring(&msgbuf, record->name);
pq_sendstring(&msgbuf, val);
pq_endmessage(&msgbuf);
pfree(val);
}
}
/*
* Try to parse value as an integer. The accepted formats are the
* usual decimal, octal, or hexadecimal formats, optionally followed by
* a unit name if "flags" indicates a unit is allowed.
*
* If the string parses okay, return true, else false.
* If okay and result is not NULL, return the value in *result.
* If not okay and hintmsg is not NULL, *hintmsg is set to a suitable
* HINT message, or NULL if no hint provided.
*/
bool parse_int(const char* value, int* result, int flags, const char** hintmsg)
{
int64 val;
char* endptr = NULL;
/* To suppress compiler warnings, always set output params */
if (result != NULL)
*result = 0;
if (hintmsg != NULL)
*hintmsg = NULL;
/* We assume here that int64 is at least as wide as long */
errno = 0;
val = strtol(value, &endptr, 0);
if (endptr == value)
return false; /* no HINT for integer syntax error */
if (errno == ERANGE) {
if (hintmsg != NULL)
*hintmsg = gettext_noop("Value exceeds integer range.");
return false;
}
/* allow whitespace between integer and unit */
while (isspace((unsigned char)*endptr))
endptr++;
/* Handle possible unit conversion before check integer overflow */
if (*endptr != '\0') {
/*
* Note: the multiple-switch coding technique here is a bit tedious,
* but seems necessary to avoid intermediate-value overflows.
*/
if (flags & GUC_UNIT_MEMORY) {
val = (int64)MemoryUnitConvert(&endptr, val, flags, hintmsg);
} else if (flags & GUC_UNIT_TIME) {
val = (int64)TimeUnitConvert(&endptr, val, flags, hintmsg);
}
/* allow whitespace after unit */
while (isspace((unsigned char)*endptr))
endptr++;
if (*endptr != '\0')
return false; /* appropriate hint, if any, already set */
}
/* Check for integer overflow */
if (val != (int64)((int32)val)) {
if (hintmsg != NULL)
*hintmsg = gettext_noop("Value exceeds integer range.");
return false;
}
if (result != NULL)
*result = (int)val;
return true;
}
/*
* Try to parse value as an 64-bit integer. The accepted format is
* decimal number.
*
* If the string parses okay, return true, else false.
* If okay and result is not NULL, return the value in *result.
* If not okay and hintmsg is not NULL, *hintmsg is set to a suitable
* HINT message, or NULL if no hint provided.
*/
bool parse_int64(const char* value, int64* result, const char** hintmsg)
{
int64 val;
char* endptr = NULL;
/* To suppress compiler warnings, always set output params */
if (result != NULL) {
*result = 0;
}
if (hintmsg != NULL) {
*hintmsg = NULL;
}
/* We assume here that int64 is at least as wide as long */
errno = 0;
#ifdef _MSC_VER /* MSVC only */
val = _strtoi64(value, &endptr, 10);
#elif defined(HAVE_STRTOLL) && SIZEOF_LONG < 8
val = strtoll(value, &endptr, 10);
#else
val = strtol(value, &endptr, 10);
#endif
if (endptr == value || *endptr != '\0') {
return false; /* no HINT for integer syntax error */
}
if (errno == ERANGE) {
if (hintmsg != NULL) {
*hintmsg = gettext_noop("Value exceeds 64-bit integer range.");
}
return false;
}
if (result != NULL) {
*result = val;
}
return true;
}
/*
* Try to parse value as a floating point number in the usual format.
* If the string parses okay, return true, else false.
* If okay and result is not NULL, return the value in *result.
*/
bool parse_real(const char* value, double* result, int flags, const char** hintmsg)
{
double val;
char* endptr = NULL;
if (result != NULL)
*result = 0; /* suppress compiler warning */
errno = 0;
val = strtod(value, &endptr);
if (endptr == value || errno == ERANGE)
return false;
/* reject NaN (infinities will fail range checks later) */
if (isnan(val)) {
return false;
}
/* allow whitespace after number */
while (isspace((unsigned char)*endptr))
endptr++;
if (*endptr != '\0') {
/*
* Note: the multiple-switch coding technique here is a bit tedious,
* but seems necessary to avoid intermediate-value overflows.
*/
if (flags & GUC_UNIT_MEMORY) {
val = MemoryUnitConvert(&endptr, val, flags, hintmsg);
} else if (flags & GUC_UNIT_TIME) {
val = TimeUnitConvert(&endptr, val, flags, hintmsg);
}
/* allow whitespace after unit */
while (isspace((unsigned char)*endptr)) {
endptr++;
}
if (*endptr != '\0') {
return false; /* appropriate hint, if any, already set */
}
}
if (result != NULL) {
*result = val;
}
return true;
}
/*
* The reference is used because auto-increment of formal parameters does not change the value of the actual parameter.
* As a result, an error is reported.
*/
double MemoryUnitConvert(char** endptr, double value, int flags, const char** hintmsg)
{
double val = value;
const int size_2byte = 2;
/* Set hint for use if no match or trailing garbage */
if (hintmsg != NULL) {
*hintmsg = gettext_noop("Valid units for this parameter are \"kB\", \"MB\", and \"GB\".");
}
#if BLCKSZ < 1024 || BLCKSZ > (1024 * 1024)
#error BLCKSZ must be between 1KB and 1MB
#endif
#if XLOG_BLCKSZ < 1024 || XLOG_BLCKSZ > (1024 * 1024)
#error XLOG_BLCKSZ must be between 1KB and 1MB
#endif
if (strncmp(*endptr, "kB", 2) == 0) {
*endptr += size_2byte;
switch (flags & GUC_UNIT_MEMORY) {
case GUC_UNIT_BLOCKS:
val /= (double)(BLCKSZ / 1024);
break;
case GUC_UNIT_XBLOCKS:
val /= (double)(XLOG_BLCKSZ / 1024);
break;
default:
break;
}
} else if (strncmp(*endptr, "MB", 2) == 0) {
*endptr += size_2byte;
switch (flags & GUC_UNIT_MEMORY) {
case GUC_UNIT_KB:
val *= KB_PER_MB;
break;
case GUC_UNIT_BLOCKS:
val *= KB_PER_MB / ((double)BLCKSZ / 1024);
break;
case GUC_UNIT_XBLOCKS:
val *= KB_PER_MB / ((double)XLOG_BLCKSZ / 1024);
break;
default:
break;
}
} else if (strncmp(*endptr, "GB", 2) == 0) {
*endptr += size_2byte;
switch (flags & GUC_UNIT_MEMORY) {
case GUC_UNIT_KB:
val *= KB_PER_GB;
break;
case GUC_UNIT_BLOCKS:
val *= KB_PER_GB / ((double)BLCKSZ / 1024);
break;
case GUC_UNIT_XBLOCKS:
val *= KB_PER_GB / ((double)XLOG_BLCKSZ / 1024);
break;
default:
break;
}
}
return val;
}
double TimeUnitConvert(char** endptr, double value, int flags, const char** hintmsg)
{
double val = value;
const int size_1byte = 1;
const int size_2byte = 2;
const int size_3byte = 3;
/* Set hint for use if no match or trailing garbage */
if (hintmsg != NULL) {
*hintmsg = gettext_noop("Valid units for this parameter are \"ms\", \"s\", \"min\", \"h\", and \"d\".");
}
if (strncmp(*endptr, "ms", 2) == 0) {
*endptr += size_2byte;
switch (flags & GUC_UNIT_TIME) {
case GUC_UNIT_S:
val /= MS_PER_S;
break;
case GUC_UNIT_MIN:
val /= MS_PER_MIN;
break;
case GUC_UNIT_HOUR:
val /= MS_PER_H;
break;
case GUC_UNIT_DAY:
val /= MS_PER_D;
break;
default:
break;
}
} else if (strncmp(*endptr, "s", 1) == 0) {
*endptr += size_1byte;
switch (flags & GUC_UNIT_TIME) {
case GUC_UNIT_MS:
val *= MS_PER_S;
break;
case GUC_UNIT_MIN:
val /= S_PER_MIN;
break;
case GUC_UNIT_HOUR:
val /= S_PER_H;
break;
case GUC_UNIT_DAY:
val /= S_PER_D;
break;
default:
break;
}
} else if (strncmp(*endptr, "min", 3) == 0) {
*endptr += size_3byte;
switch (flags & GUC_UNIT_TIME) {
case GUC_UNIT_MS:
val *= MS_PER_MIN;
break;
case GUC_UNIT_S:
val *= S_PER_MIN;
break;
case GUC_UNIT_HOUR:
val /= MIN_PER_H;
break;
case GUC_UNIT_DAY:
val /= MIN_PER_D;
break;
default:
break;
}
} else if (strncmp(*endptr, "h", 1) == 0) {
*endptr += size_1byte;
switch (flags & GUC_UNIT_TIME) {
case GUC_UNIT_MS:
val *= MS_PER_H;
break;
case GUC_UNIT_S:
val *= S_PER_H;
break;
case GUC_UNIT_MIN:
val *= MIN_PER_H;
break;
case GUC_UNIT_DAY:
val /= H_PER_D;
break;
default:
break;
}
} else if (strncmp(*endptr, "d", 1) == 0) {
*endptr += size_1byte;
switch (flags & GUC_UNIT_TIME) {
case GUC_UNIT_MS:
val *= MS_PER_D;
break;
case GUC_UNIT_S:
val *= S_PER_D;
break;
case GUC_UNIT_MIN:
val *= MIN_PER_D;
break;
case GUC_UNIT_HOUR:
val *= H_PER_D;
default:
break;
}
}
return val;
}
/*
* @Description: Get guc string value according to val.
* @in record: Enum configure struct.
* @in val: Guc value.
* @return: Guc string values.
*/
static const char* config_enum_map_lookup_by_value(struct config_enum* record, int val)
{
StringInfoData buf;
initStringInfo(&buf);
bool is_first = true;
const struct config_enum_entry* entry = NULL;
for (entry = record->options; entry && entry->name; entry++) {
if (entry->val & val) {
if (is_first) {
appendStringInfo(&buf, "%s", entry->name);
is_first = false;
} else {
appendStringInfo(&buf, ", %s", entry->name);
}
}
}
if (buf.len == 0) {
appendStringInfoString(&buf, "none");
}
return buf.data;
}
/*
* Lookup the name for an enum option with the selected value.
* Should only ever be called with known-valid values, so throws
* an elog(ERROR) if the enum option is not found.
*
* The returned string is a pointer to static THR_LOCAL data and not
* allocated for modification.
*/
const char* config_enum_lookup_by_value(struct config_enum* record, int val)
{
if (pg_strncasecmp(record->gen.name, "rewrite_rule", sizeof("rewrite_rule")) == 0 ||
pg_strncasecmp(record->gen.name, "sql_beta_feature", sizeof("sql_beta_feature")) == 0) {
return config_enum_map_lookup_by_value(record, val);
} else {
const struct config_enum_entry* entry = NULL;
for (entry = record->options; entry && entry->name; entry++) {
if (entry->val == val)
return entry->name;
}
}
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("could not find enum option %d for %s", val, record->gen.name)));
return NULL; /* silence compiler */
}
/*
* @Description: Set bit map to guc.
* @in record: Enum config.
* @in newval: New values.
* @out retval: Guc param.
*/
static bool config_enum_map_lookup_by_name(struct config_enum* record, const char* newval, int* retval)
{
char* val = pstrdup(newval);
List* valList = NIL;
if (!SplitIdentifierString(val, ',', &valList)) {
pfree(val);
list_free(valList);
return false;
}
int set_value = 0;
const struct config_enum_entry* entry = NULL;
ListCell* lc = NULL;
foreach (lc, valList) {
char* valItem = (char*)lfirst(lc);
for (entry = record->options; entry && entry->name; entry++) {
if (pg_strcasecmp(valItem, entry->name) == 0) {
set_value |= entry->val;
break;
}
}
if (entry != NULL && entry->name == NULL) {
return false;
}
}
pfree(val);
list_free(valList);
*retval = set_value;
return true;
}
/*
* Lookup the value for an enum option with the selected name
* (case-insensitive).
* If the enum option is found, sets the retval value and returns
* true. If it's not found, return FALSE and retval is set to 0.
*/
bool config_enum_lookup_by_name(struct config_enum* record, const char* value, int* retval)
{
if (pg_strncasecmp(record->gen.name, "rewrite_rule", sizeof("rewrite_rule")) == 0 ||
pg_strncasecmp(record->gen.name, "sql_beta_feature", sizeof("sql_beta_feature")) == 0) {
return config_enum_map_lookup_by_name(record, value, retval);
} else {
const struct config_enum_entry* entry = NULL;
for (entry = record->options; entry && entry->name; entry++) {
if (pg_strcasecmp(value, entry->name) == 0) {
*retval = entry->val;
return TRUE;
}
}
}
*retval = 0;
return FALSE;
}
/*
* Return a list of all available options for an enum, excluding
* hidden ones, separated by the given separator.
* If prefix is non-NULL, it is added before the first enum value.
* If suffix is non-NULL, it is added to the end of the string.
*/
static char* config_enum_get_options(
struct config_enum* record, const char* prefix, const char* suffix, const char* separator)
{
const struct config_enum_entry* entry = NULL;
StringInfoData retstr;
int seplen;
initStringInfo(&retstr);
appendStringInfoString(&retstr, prefix);
seplen = strlen(separator);
for (entry = record->options; entry && entry->name; entry++) {
if (!entry->hidden) {
appendStringInfoString(&retstr, entry->name);
appendBinaryStringInfo(&retstr, separator, seplen);
}
}
/*
* All the entries may have been hidden, leaving the string empty if no
* prefix was given. This indicates a broken GUC setup, since there is no
* use for an enum without any values, so we just check to make sure we
* don't write to invalid memory instead of actually trying to do
* something smart with it.
*/
if (retstr.len >= seplen) {
/* Replace final separator */
retstr.data[retstr.len - seplen] = '\0';
retstr.len -= seplen;
}
appendStringInfoString(&retstr, suffix);
return retstr.data;
}
/*
* Validates configuration parameter and value, by calling check hook functions
* depending on record's vartype. It validates if the parameter
* value given is in range of expected predefined value for that parameter.
*
* freemem - true indicates memory for newval and newextra will be
* freed in this function, false indicates it will be freed
* by caller.
* Return value:
* true : the value is valid
* false: the name or value is invalid
*/
static bool validate_conf_option(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra)
{
Assert(value != NULL);
/*
* Validate the value for the passed record, to ensure it is in expected range.
*/
switch (record->vartype) {
case PGC_BOOL: {
return validate_conf_bool(record, name, value, source, elevel, freemem, newvalue, newextra);
}
case PGC_INT: {
return validate_conf_int(record, name, value, source, elevel, freemem, newvalue, newextra);
}
case PGC_INT64: {
return validate_conf_int64(record, name, value, source, elevel, freemem, newvalue, newextra);
}
case PGC_REAL: {
return validate_conf_real(record, name, value, source, elevel, freemem, newvalue, newextra);
}
case PGC_STRING: {
return validate_conf_string(record, value, source, elevel, freemem, newvalue, newextra);
}
case PGC_ENUM: {
return validate_conf_enum(record, name, value, source, elevel, freemem, newvalue, newextra);
}
default: {
ereport(ERROR,
(errcode(ERRCODE_INVALID_ATTRIBUTE),
errmsg("unknow guc variable type: %d", record->vartype)));
}
break;
}
return true;
}
static bool validate_conf_bool(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra)
{
struct config_bool *conf = (struct config_bool *) record;
bool tmpnewval;
bool* newval = (newvalue == NULL ? &tmpnewval : (bool*)newvalue);
if (!parse_bool(value, newval)) {
ereport(elevel,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("parameter \"%s\" requires a Boolean value", name)));
return false;
}
if (!call_bool_check_hook(conf, newval, newextra, source, elevel)) {
return false;
}
if (*newextra && freemem) {
pfree(*newextra);
*newextra = NULL;
}
return true;
}
static bool validate_conf_int(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra)
{
struct config_int *conf = (struct config_int *) record;
int tmpnewval;
int* newval = (newvalue == NULL ? &tmpnewval : (int*)newvalue);
const char *hintmsg = NULL;
if (!parse_int(value, newval, conf->gen.flags, &hintmsg)) {
ereport(elevel,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid value for parameter \"%s\": \"%s\"",
name, value), hintmsg ? errhint("%s", _(hintmsg)) : 0));
return false;
}
if (*newval < conf->min || *newval > conf->max) {
ereport(elevel,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("%d is outside the valid range for parameter \"%s\" (%d .. %d)",
*newval, name, conf->min, conf->max)));
return false;
}
if (!call_int_check_hook(conf, newval, newextra, source, elevel)) {
return false;
}
if (*newextra && freemem) {
pfree(*newextra);
*newextra = NULL;
}
return true;
}
static bool validate_conf_int64(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra)
{
struct config_int64* conf = (struct config_int64*)record;
int64 tmpnewval;
int64* newval = (newvalue == NULL ? &tmpnewval : (int64*)newvalue);
const char* hintmsg = NULL;
if (!parse_int64(value, newval, &hintmsg)) {
ereport(elevel,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("parameter \"%s\" requires a numeric value", name)));
return false;
}
if (*newval < conf->min || *newval > conf->max) {
ereport(elevel,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("%ld is outside the valid range for parameter \"%s\" (%ld .. %ld)",
*newval, name, conf->min, conf->max)));
return false;
}
if (!call_int64_check_hook(conf, newval, newextra, source, elevel)) {
return false;
}
if (*newextra && freemem) {
pfree(newextra);
*newextra = NULL;
}
return true;
}
static bool validate_conf_real(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra)
{
struct config_real *conf = (struct config_real *) record;
double tmpnewval;
double* newval = (newvalue == NULL ? &tmpnewval : (double*)newvalue);
const char *hintmsg = NULL;
if (!parse_real(value, newval, conf->gen.flags, &hintmsg)) {
ereport(elevel,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("parameter \"%s\" requires a numeric value", name)));
return false;
}
if (*newval < conf->min || *newval > conf->max) {
ereport(elevel,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("%g is outside the valid range for parameter \"%s\" (%g .. %g)",
*newval, name, conf->min, conf->max)));
return false;
}
if (!call_real_check_hook(conf, newval, newextra, source, elevel))
return false;
if (*newextra && freemem) {
pfree(*newextra);
*newextra = NULL;
}
return true;
}
static bool validate_conf_string(struct config_generic *record, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra)
{
struct config_string *conf = (struct config_string *) record;
char* tmpnewval = NULL;
char** newval = newvalue == NULL ? &tmpnewval : (char**)newvalue;
pfree_ext(*newval);
/* The value passed by the caller could be transient, so we always strdup it. */
*newval = guc_strdup(elevel, value);
if (*newval == NULL) {
return false;
}
/* The only built-in "parsing" check we have is to apply truncation if GUC_IS_NAME. */
if (conf->gen.flags & GUC_IS_NAME) {
truncate_identifier(*newval, strlen(*newval), true);
}
if (!call_string_check_hook(conf, newval, newextra, source, elevel)) {
if (*newval != NULL) {
pfree(*newval);
*newval = NULL;
}
return false;
}
/* Free the malloc'd data if any */
if (freemem) {
if (*newval != NULL) {
pfree(*newval);
*newval = NULL;
}
if (*newextra != NULL) {
pfree(*newextra);
*newextra = NULL;
}
}
return true;
}
static bool validate_conf_enum(struct config_generic *record, const char *name, const char *value, GucSource source,
int elevel, bool freemem, void *newvalue, void **newextra)
{
struct config_enum *conf = (struct config_enum *) record;
int tmpnewval;
int* newval = (newvalue == NULL ? &tmpnewval : (int*)newvalue);
if (!config_enum_lookup_by_name(conf, value, newval)) {
char* hintmsg;
hintmsg = config_enum_get_options(conf, "Available values: ", ".", ", ");
ereport(elevel,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid value for parameter \"%s\": \"%s\"", name, value),
hintmsg ? errhint("%s", _(hintmsg)) : 0));
if (hintmsg != NULL) {
pfree(hintmsg);
hintmsg = NULL;
}
return false;
}
if (!call_enum_check_hook(conf, newval, newextra, source, LOG))
return false;
if (*newextra && freemem) {
pfree(*newextra);
*newextra = NULL;
}
return true;
}
void SetThreadLocalGUC(knl_session_context* session)
{
default_statistics_target = session->attr.attr_sql.default_statistics_target;
session_timezone = session->attr.attr_common.session_timezone;
log_timezone = session->attr.attr_common.log_timezone;
client_min_messages = session->attr.attr_common.client_min_messages;
log_min_messages = session->attr.attr_common.log_min_messages;
enable_alarm = g_instance.attr.attr_common.enable_alarm;
Alarm_component = g_instance.attr.attr_common.Alarm_component;
tcp_link_addr = g_instance.attr.attr_network.tcp_link_addr;
assert_enabled = session->attr.attr_common.assert_enabled;
AlarmReportInterval = session->attr.attr_common.AlarmReportInterval;
xmloption = session->attr.attr_common.xmloption;
comm_client_bind = session->attr.attr_network.comm_client_bind;
comm_ackchk_time = session->attr.attr_network.comm_ackchk_time;
}
/*
* Find if there is a namespace other than pg_temp_xxx in the value to be set.
* If no one, return. Otherwise set them to search_path.
* Discard pg_temp in newval because
* 1) it's implicit in search_path and will be added the forefront of the path.
* 2) gsql will execute the query below and set the result to search_path.
* select n.nspname||','||s.setting from pg_namespace n, pg_settings s
* where n.oid = pg_my_temp_schema() and s.name='search_path';
* The result should be pg_temp, contents in search_path
* Here is the example of setting twice from gsql(current search_path is public).
* 1) gsql execute the query and get result pg_temp, public.
* 2) gsql set search_path = pg_temp, public
* 3) gsql execute the query and get result pg_temp, pg_temp, public
* 4) gsql set search_path = pg_temp, pg_temp, public
* From the example above, we find pg_temp will be added multiple times and
* exceed the string's max length.
*/
static char* getSchemaNameList(const char* value)
{
/*
* The reason of checking pg_temp_ rather than pg_temp above is
* pg_temp is the general valid temp namespace but we cannot find oid
* from it, so don't process it here.
* gsql set temp search_path pg_temp_xxx not pg_temp.
*
* strings in namelist are already strip quote.
* No need to consider quote_all_identifiers problem.
*/
List *namelist = NIL;
char* valueCopy = pstrdup(value);
SplitIdentifierString((char *)valueCopy, ',', &namelist);
/*
* If current CN receives query
* 'set search_path = pg_temp_xxx' from other CN,
* don't process temp namespaces which don't belong
* the current CN.
*/
if (!IS_PGXC_COORDINATOR || !IsConnFromCoord()) {
SetTempFromSearchPath(namelist);
}
int cntSearchItem = 0; /* number of namespaces other than pg_temp */
StringInfoData buf;
initStringInfo(&buf);
ListCell *item = NULL;
foreach(item, namelist) {
char *searchPathName = (char *)lfirst(item);
if (!isTempNamespaceName(searchPathName)) {
if (cntSearchItem > 0) {
appendStringInfo(&buf, ", ");
}
cntSearchItem++;
/* search_path needs to consider adding quote */
appendStringInfoString(&buf, quote_identifier(searchPathName));
}
}
if (cntSearchItem == 0) {
pfree_ext(buf.data);
return NULL;
} else {
return buf.data;
}
}
/*
* Sets option `name' to given value.
*
* The value should be a string, which will be parsed and converted to
* the appropriate data type. The context and source parameters indicate
* in which context this function is being called, so that it can apply the
* access restrictions properly.
*
* If value is NULL, set the option to its default value (normally the
* reset_val, but if source == PGC_S_DEFAULT we instead use the boot_val).
*
* action indicates whether to set the value globally in the session, locally
* to the current top transaction, or just for the duration of a function call.
*
* If changeVal is false then don't really set the option but do all
* the checks to see if it would work.
*
* elevel should normally be passed as zero, allowing this function to make
* its standard choice of ereport level. However some callers need to be
* able to override that choice; they should pass the ereport level to use.
*
* Return value:
* +1: the value is valid and was successfully applied.
* 0: the name or value is invalid (but see below).
* -1: the value was not applied because of context, priority, or changeVal.
*
* If there is an error (non-existing option, invalid value) then an
* ereport(ERROR) is thrown *unless* this is called for a source for which
* we don't want an ERROR (currently, those are defaults, the config file,
* and per-database or per-user settings, as well as callers who specify
* a less-than-ERROR elevel). In those cases we write a suitable error
* message via ereport() and return 0.
*
* See also SetConfigOption for an external interface.
*/
int set_config_option(const char* name, const char* value, GucContext context, GucSource source, GucAction action,
bool changeVal, int elevel, bool isReload)
{
struct config_generic* record = NULL;
bool prohibitValueChange = false;
bool makeDefault = false;
#ifdef PGXC
/*
* Current GucContest value is needed to check if xc_maintenance_mode parameter
* is specified in valid contests. It is allowed only by SET command or
* libpq connect parameters so that setting this ON is just temporary.
*/
currentGucContext = context;
#endif
if (elevel == 0) {
if (source == PGC_S_DEFAULT || source == PGC_S_FILE) {
/*
* To avoid cluttering the log, only the postmaster bleats loudly
* about problems with the config file.
*/
elevel = IsUnderPostmaster ? DEBUG3 : LOG;
} else if (source == PGC_S_DATABASE || source == PGC_S_USER || source == PGC_S_DATABASE_USER)
elevel = WARNING;
else
elevel = ERROR;
}
record = find_option(name, true, elevel);
if (record == NULL) {
ereport(
elevel, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("unrecognized configuration parameter \"%s\"", name)));
return 0;
}
if (strcmp(name, "enable_cluster_resize") == 0) {
ereport(LOG, (errmsg("Set parameter \"%s\": \"%s\"", name, value)));
}
if (strcmp(name, "application_name") == 0 && context == PGC_SIGHUP) {
return 0;
}
/*
* Check if the option can be set at this time. See guc.h for the precise
* rules.
*/
switch (record->context) {
case PGC_INTERNAL:
if (context != PGC_INTERNAL) {
/*Add for upgrade*/
if (strncmp(name, "sql_compatibility", sizeof("sql_compatibility")) == 0) {
ereport(WARNING,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed. Compatibility can only be specified when "
"creating database",
name)));
return 1;
} else {
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed", name)));
}
return 0;
}
break;
case PGC_POSTMASTER:
if (context == PGC_SIGHUP) {
/*
* We are re-reading a PGC_POSTMASTER variable from
* postgresql.conf. We can't change the setting, so we should
* give a warning if the DBA tries to change it. However,
* because of variant formats, canonicalization by check
* hooks, etc, we can't just compare the given string directly
* to what's stored. Set a flag to check below after we have
* the final storable value.
*/
prohibitValueChange = true;
} else if (context != PGC_POSTMASTER) {
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed without restarting the server", name)));
return 0;
}
break;
case PGC_SIGHUP:
if (context != PGC_SIGHUP && context != PGC_POSTMASTER) {
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed now", name)));
return 0;
}
/*
* Hmm, the idea of the SIGHUP context is "ought to be global, but
* can be changed after postmaster start". But there's nothing
* that prevents a crafty administrator from sending SIGHUP
* signals to individual backends only.
*/
break;
case PGC_BACKEND:
if (context == PGC_SIGHUP) {
/*
* If a PGC_BACKEND parameter is changed in the config file,
* we want to accept the new value in the postmaster (whence
* it will propagate to subsequently-started backends), but
* ignore it in existing backends. This is a tad klugy, but
* necessary because we don't re-read the config file during
* backend start.
*/
if (IsUnderPostmaster && !isReload)
return -1;
} else if (context != PGC_POSTMASTER && context != PGC_BACKEND && source != PGC_S_CLIENT) {
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be set after connection start", name)));
return 0;
}
break;
case PGC_SUSET:
if (context == PGC_USERSET || context == PGC_BACKEND) {
ereport(elevel,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("permission denied to set parameter \"%s\"", name)));
return 0;
}
break;
case PGC_USERSET:
/* always okay */
break;
default:
break;
}
/*
* Disallow changing GUC_NOT_WHILE_SEC_REST values if we are inside a
* security restriction context. We can reject this regardless of the GUC
* context or source, mainly because sources that it might be reasonable
* to override for won't be seen while inside a function.
*
* Note: variables marked GUC_NOT_WHILE_SEC_REST should usually be marked
* GUC_NO_RESET_ALL as well, because ResetAllOptions() doesn't check this.
* An exception might be made if the reset value is assumed to be "safe".
*
* Note: this flag is currently used for "session_authorization" and
* "role". We need to prohibit changing these inside a local userid
* context because when we exit it, GUC won't be notified, leaving things
* out of sync. (This could be fixed by forcing a new GUC nesting level,
* but that would change behavior in possibly-undesirable ways.) Also, we
* prohibit changing these in a security-restricted operation because
* otherwise RESET could be used to regain the session user's privileges.
*/
if (record->flags & GUC_NOT_WHILE_SEC_REST) {
if (InLocalUserIdChange()) {
/*
* Phrasing of this error message is historical, but it's the most
* common case.
*/
ereport(elevel,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("cannot set parameter \"%s\" within security-definer function", name)));
return 0;
}
if (InSecurityRestrictedOperation()) {
ereport(elevel,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("cannot set parameter \"%s\" within security-restricted operation", name)));
return 0;
}
}
/*
* Should we set reset/stacked values? (If so, the behavior is not
* transactional.) This is done either when we get a default value from
* the database's/user's/client's default settings or when we reset a
* value to its default.
*/
makeDefault = changeVal && (source <= PGC_S_OVERRIDE) && ((value != NULL) || source == PGC_S_DEFAULT);
/*
* Ignore attempted set if overridden by previously processed setting.
* However, if changeVal is false then plow ahead anyway since we are
* trying to find out if the value is potentially good, not actually use
* it. Also keep going if makeDefault is true, since we may want to set
* the reset/stacked values even if we can't set the variable itself.
*/
if (record->source > source) {
if (changeVal && !makeDefault) {
ereport(DEBUG3, (errmsg("\"%s\": setting ignored because previous source is higher priority", name)));
return -1;
}
changeVal = false;
}
/*
* Evaluate value and set variable.
*/
switch (record->vartype) {
case PGC_BOOL: {
struct config_bool* conf = (struct config_bool*)record;
bool newval = false;
void* newextra = NULL;
if (value != NULL) {
if (!validate_conf_option(record, name, value, source, elevel, false, &newval, &newextra)) {
return 0;
}
} else if (source == PGC_S_DEFAULT) {
newval = conf->boot_val;
if (!call_bool_check_hook(conf, &newval, &newextra, source, elevel))
return 0;
} else {
newval = conf->reset_val;
newextra = conf->reset_extra;
source = conf->gen.reset_source;
context = conf->gen.reset_scontext;
}
if (prohibitValueChange) {
if (*conf->variable != newval) {
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed without restarting the server", name)));
return 0;
}
return -1;
}
if (changeVal) {
/* Save old value to support transaction abort */
if (!makeDefault)
push_old_value(&conf->gen, action);
if (conf->assign_hook) {
if (strcasecmp(record->name, "enable_save_datachanged_timestamp") == 0) {
bool set_op = false;
if (value != NULL && source == PGC_S_SESSION)
set_op = true;
(*conf->assign_hook)(newval, &set_op);
} else
(*conf->assign_hook)(newval, newextra);
}
if (!IsUnderPostmaster || conf->gen.context != PGC_POSTMASTER) {
*conf->variable = newval;
}
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
conf->gen.source = source;
conf->gen.scontext = context;
}
if (makeDefault) {
GucStack* stack = NULL;
if (conf->gen.reset_source <= source) {
conf->reset_val = newval;
set_extra_field(&conf->gen, &conf->reset_extra, newextra);
conf->gen.reset_source = source;
conf->gen.reset_scontext = context;
}
for (stack = conf->gen.stack; stack; stack = stack->prev) {
if (stack->source <= source) {
stack->prior.val.boolval = newval;
set_extra_field(&conf->gen, &stack->prior.extra, newextra);
stack->source = source;
stack->scontext = context;
}
}
}
/* Perhaps we didn't install newextra anywhere */
if (newextra && !extra_field_used(&conf->gen, newextra))
pfree(newextra);
break;
}
case PGC_INT: {
struct config_int* conf = (struct config_int*)record;
int newval;
void* newextra = NULL;
if (value != NULL) {
if (!validate_conf_option(record, name, value, source, elevel, false, &newval, &newextra)) {
return 0;
}
} else if (source == PGC_S_DEFAULT) {
newval = conf->boot_val;
if (!call_int_check_hook(conf, &newval, &newextra, source, elevel))
return 0;
} else {
newval = conf->reset_val;
newextra = conf->reset_extra;
source = conf->gen.reset_source;
context = conf->gen.reset_scontext;
}
if (prohibitValueChange) {
if (*conf->variable != newval) {
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed without restarting the server", name)));
return 0;
}
return -1;
}
if (changeVal) {
/* Save old value to support transaction abort */
if (!makeDefault)
push_old_value(&conf->gen, action);
u_sess->utils_cxt.guc_new_value = &newval;
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
if (!IsUnderPostmaster || conf->gen.context != PGC_POSTMASTER) {
*conf->variable = newval;
}
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
conf->gen.source = source;
conf->gen.scontext = context;
u_sess->utils_cxt.guc_new_value = NULL;
}
if (makeDefault) {
GucStack* stack = NULL;
if (conf->gen.reset_source <= source) {
conf->reset_val = newval;
set_extra_field(&conf->gen, &conf->reset_extra, newextra);
conf->gen.reset_source = source;
conf->gen.reset_scontext = context;
}
for (stack = conf->gen.stack; stack; stack = stack->prev) {
if (stack->source <= source) {
stack->prior.val.intval = newval;
set_extra_field(&conf->gen, &stack->prior.extra, newextra);
stack->source = source;
stack->scontext = context;
}
}
}
/* Perhaps we didn't install newextra anywhere */
if (newextra && !extra_field_used(&conf->gen, newextra))
pfree(newextra);
break;
}
case PGC_INT64: {
struct config_int64* conf = (struct config_int64*)record;
int64 newval;
void* newextra = NULL;
if (value != NULL) {
if (!validate_conf_option(record, name, value, source, elevel, false, &newval, &newextra)) {
return 0;
}
} else if (source == PGC_S_DEFAULT) {
newval = conf->boot_val;
if (!call_int64_check_hook(conf, &newval, &newextra, source, elevel))
return 0;
} else {
newval = conf->reset_val;
newextra = conf->reset_extra;
source = conf->gen.reset_source;
context = conf->gen.reset_scontext;
}
if (prohibitValueChange) {
if (*conf->variable != newval) {
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed without restarting the server", name)));
return 0;
}
return -1;
}
if (changeVal) {
/* Save old value to support transaction abort */
if (!makeDefault)
push_old_value(&conf->gen, action);
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
if (!IsUnderPostmaster || conf->gen.context != PGC_POSTMASTER) {
*conf->variable = newval;
}
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
conf->gen.source = source;
conf->gen.scontext = context;
}
if (makeDefault) {
GucStack* stack = NULL;
if (conf->gen.reset_source <= source) {
conf->reset_val = newval;
set_extra_field(&conf->gen, &conf->reset_extra, newextra);
conf->gen.reset_source = source;
conf->gen.reset_scontext = context;
}
for (stack = conf->gen.stack; stack; stack = stack->prev) {
if (stack->source <= source) {
stack->prior.val.intval = newval;
set_extra_field(&conf->gen, &stack->prior.extra, newextra);
stack->source = source;
stack->scontext = context;
}
}
}
/* Perhaps we didn't install newextra anywhere */
if (newextra && !extra_field_used(&conf->gen, newextra)) {
pfree(newextra);
newextra = NULL;
}
break;
}
case PGC_REAL: {
struct config_real* conf = (struct config_real*)record;
double newval;
void* newextra = NULL;
if (value != NULL) {
if (!validate_conf_option(record, name, value, source, elevel, false, &newval, &newextra)) {
return 0;
}
} else if (source == PGC_S_DEFAULT) {
newval = conf->boot_val;
if (!call_real_check_hook(conf, &newval, &newextra, source, elevel))
return 0;
} else {
newval = conf->reset_val;
newextra = conf->reset_extra;
source = conf->gen.reset_source;
context = conf->gen.reset_scontext;
}
if (prohibitValueChange) {
if (*conf->variable != newval) {
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed without restarting the server", name)));
return 0;
}
return -1;
}
if (changeVal) {
/* Save old value to support transaction abort */
if (!makeDefault)
push_old_value(&conf->gen, action);
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
if (!IsUnderPostmaster || conf->gen.context != PGC_POSTMASTER) {
*conf->variable = newval;
}
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
conf->gen.source = source;
conf->gen.scontext = context;
}
if (makeDefault) {
GucStack* stack = NULL;
if (conf->gen.reset_source <= source) {
conf->reset_val = newval;
set_extra_field(&conf->gen, &conf->reset_extra, newextra);
conf->gen.reset_source = source;
conf->gen.reset_scontext = context;
}
for (stack = conf->gen.stack; stack; stack = stack->prev) {
if (stack->source <= source) {
stack->prior.val.realval = newval;
set_extra_field(&conf->gen, &stack->prior.extra, newextra);
stack->source = source;
stack->scontext = context;
}
}
}
/* Perhaps we didn't install newextra anywhere */
if (newextra && !extra_field_used(&conf->gen, newextra))
pfree(newextra);
break;
}
case PGC_STRING: {
struct config_string* conf = (struct config_string*)record;
char* newval = NULL;
void* newextra = NULL;
bool is_reset_val = false;
if (u_sess->catalog_cxt.overrideStack &&
(strcasecmp(name, SEARCH_PATH_GUC_NAME) == 0 || strcasecmp(name, CURRENT_SCHEMA_GUC_NAME) == 0)) {
/*
* set search_path or current_schema inside stored procedure is invalid,
* return directly.
*/
OverrideStackEntry* entry = NULL;
entry = (OverrideStackEntry*)linitial(u_sess->catalog_cxt.overrideStack);
if (entry->inProcedure)
return -1;
}
if (value != NULL) {
/*
* The value passed by the caller could be transient, so we always strdup it.
* At the same time, we need to make sure newval is correctly initialized and ready
* for validation below.
*/
newval = guc_strdup(elevel, value);
if (newval == NULL) {
return 0;
}
if (!validate_conf_option(record, name, value, source, elevel, false, &newval, &newextra)) {
pfree_ext(newval);
return 0;
}
/*
* when \parallel in gsql is on, we use "set search_path to pg_temp_XXX"
* to tell new started parallel openGauss which temp namespace should use.
* but we should not clean the temp namespace when parallel openGauss
* quiting, so a flag deleteTempOnQuiting is set to prevent clean
* temp namespace when openGauss quiting.
*/
if ((strcasecmp(name, "search_path") == 0 || strcasecmp(name, "current_schema") == 0) &&
(isTempNamespaceName(value) || isTempNamespaceNameWithQuote(value))) {
char* schemaNameList = getSchemaNameList(value);
pfree_ext(newval); /* this is guaranteed to be set or freed, we need to make room for strdup */
if (schemaNameList == NULL) {
return 1;
} else {
newval = guc_strdup(elevel, schemaNameList);
pfree(schemaNameList);
}
}
} else if (source == PGC_S_DEFAULT) {
/* non-NULL boot_val must always get strdup'd */
if (conf->boot_val != NULL) {
newval = guc_strdup(elevel, conf->boot_val);
if (newval == NULL)
return 0;
} else
newval = NULL;
if (!call_string_check_hook(conf, &newval, &newextra, source, elevel)) {
pfree(newval);
return 0;
}
} else {
/*
* strdup not needed, since reset_val is already under
* guc.c's control
*/
newval = conf->reset_val;
newextra = conf->reset_extra;
source = conf->gen.reset_source;
context = conf->gen.reset_scontext;
is_reset_val = true;
}
if (prohibitValueChange) {
if (!is_reset_val) {
pfree_ext(newval);
}
/* newval shouldn't be NULL, so we're a bit sloppy here */
if (*conf->variable == NULL || newval == NULL || strcmp(*conf->variable, newval) != 0) {
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed without restarting the server", name)));
return 0;
}
return -1;
}
if (changeVal) {
/* Save old value to support transaction abort */
if (!makeDefault)
push_old_value(&conf->gen, action);
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
if (!IsUnderPostmaster || conf->gen.context != PGC_POSTMASTER) {
set_string_field(conf, conf->variable, newval);
}
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
conf->gen.source = source;
conf->gen.scontext = context;
}
if (makeDefault) {
GucStack* stack = NULL;
if (conf->gen.reset_source <= source) {
set_string_field(conf, &conf->reset_val, newval);
set_extra_field(&conf->gen, &conf->reset_extra, newextra);
conf->gen.reset_source = source;
conf->gen.reset_scontext = context;
}
for (stack = conf->gen.stack; stack; stack = stack->prev) {
if (stack->source <= source) {
set_string_field(conf, &stack->prior.val.stringval, newval);
set_extra_field(&conf->gen, &stack->prior.extra, newextra);
stack->source = source;
stack->scontext = context;
}
}
}
/* Perhaps we didn't install newval anywhere */
if (newval && !string_field_used(conf, newval))
pfree(newval);
/* Perhaps we didn't install newextra anywhere */
if (newextra && !extra_field_used(&conf->gen, newextra))
pfree(newextra);
break;
}
case PGC_ENUM: {
struct config_enum* conf = (struct config_enum*)record;
int newval;
void* newextra = NULL;
if (value != NULL) {
if (!validate_conf_option(record, name, value, source, elevel, false, &newval, &newextra)) {
return 0;
}
} else if (source == PGC_S_DEFAULT) {
newval = conf->boot_val;
if (!call_enum_check_hook(conf, &newval, &newextra, source, elevel))
return 0;
} else {
newval = conf->reset_val;
newextra = conf->reset_extra;
source = conf->gen.reset_source;
context = conf->gen.reset_scontext;
}
if (prohibitValueChange) {
if (*conf->variable != newval) {
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed without restarting the server", name)));
return 0;
}
return -1;
}
if (changeVal) {
/* Save old value to support transaction abort */
if (!makeDefault)
push_old_value(&conf->gen, action);
if (conf->assign_hook)
(*conf->assign_hook)(newval, newextra);
if (!IsUnderPostmaster || conf->gen.context != PGC_POSTMASTER) {
*conf->variable = newval;
}
set_extra_field(&conf->gen, &conf->gen.extra, newextra);
conf->gen.source = source;
conf->gen.scontext = context;
}
if (makeDefault) {
GucStack* stack = NULL;
if (conf->gen.reset_source <= source) {
conf->reset_val = newval;
set_extra_field(&conf->gen, &conf->reset_extra, newextra);
conf->gen.reset_source = source;
conf->gen.reset_scontext = context;
}
for (stack = conf->gen.stack; stack; stack = stack->prev) {
if (stack->source <= source) {
stack->prior.val.enumval = newval;
set_extra_field(&conf->gen, &stack->prior.extra, newextra);
stack->source = source;
stack->scontext = context;
}
}
}
/* Perhaps we didn't install newextra anywhere */
if (newextra && !extra_field_used(&conf->gen, newextra))
pfree(newextra);
break;
}
default:
break;
}
if (changeVal && (record->flags & GUC_REPORT))
ReportGUCOption(record);
SetThreadLocalGUC(u_sess);
return changeVal ? 1 : -1;
}
/*
* Set the fields for source file and line number the setting came from.
*/
static void set_config_sourcefile(const char* name, char* sourcefile, int sourceline)
{
struct config_generic* record = NULL;
int elevel;
/*
* To avoid cluttering the log, only the postmaster bleats loudly about
* problems with the config file.
*/
elevel = IsUnderPostmaster ? DEBUG3 : LOG;
record = find_option(name, true, elevel);
/* should not happen */
if (record == NULL)
ereport(ERROR, (errcode(ERRCODE_INVALID_NAME), errmsg("unrecognized configuration parameter \"%s\"", name)));
sourcefile = guc_strdup(elevel, sourcefile);
if (record->sourcefile)
pfree(record->sourcefile);
record->sourcefile = sourcefile;
record->sourceline = sourceline;
}
/*
* Set a config option to the given value.
*
* See also set_config_option; this is just the wrapper to be called from
* outside GUC. (This function should be used when possible, because its API
* is more stable than set_config_option's.)
*
* Note: there is no support here for setting source file/line, as it
* is currently not needed.
*/
void SetConfigOption(const char* name, const char* value, GucContext context, GucSource source)
{
(void)set_config_option(name, value, context, source, GUC_ACTION_SET, true, 0);
}
/*
* Fetch the current value of the option `name', as a string.
*
* If the option doesn't exist, return NULL if missing_ok is true (NOTE that
* this cannot be distinguished from a string variable with a NULL value!),
* otherwise throw an ereport and don't return.
*
* If restrict_superuser is true, we also enforce that only superusers can
* see GUC_SUPERUSER_ONLY variables. This should only be passed as true
* in user-driven calls.
*
* The string is *not* allocated for modification and is really only
* valid until the next call to configuration related functions.
*/
const char* GetConfigOption(const char* name, bool missing_ok, bool restrict_superuser)
{
struct config_generic* record = NULL;
char* buffer = t_thrd.buf_cxt.config_opt_buf;
int size = sizeof(t_thrd.buf_cxt.config_opt_buf);
int rc = 0;
record = find_option(name, false, ERROR);
if (record == NULL) {
if (missing_ok)
return NULL;
ereport(
ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("unrecognized configuration parameter \"%s\"", name)));
}
if (restrict_superuser && (record->flags & GUC_SUPERUSER_ONLY) && !superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE), errmsg("must be superuser to examine \"%s\"", name)));
switch (record->vartype) {
case PGC_BOOL:
return *((struct config_bool*)record)->variable ? "on" : "off";
case PGC_INT:
rc = snprintf_s(buffer, size, size - 1, "%d", *((struct config_int*)record)->variable);
securec_check_ss(rc, "\0", "\0");
return buffer;
case PGC_INT64:
rc = snprintf_s(buffer, size, size - 1, INT64_FORMAT, *((struct config_int64*)record)->variable);
securec_check_ss(rc, "\0", "\0");
return buffer;
case PGC_REAL:
rc = snprintf_s(buffer, size, size - 1, "%g", *((struct config_real*)record)->variable);
securec_check_ss(rc, "\0", "\0");
return buffer;
case PGC_STRING:
return *((struct config_string*)record)->variable;
case PGC_ENUM:
return config_enum_lookup_by_value((struct config_enum*)record, *((struct config_enum*)record)->variable);
default:
break;
}
return NULL;
}
/*
* Get the RESET value associated with the given option.
*
* Note: this is not re-entrant, due to use of static THR_LOCAL result buffer;
* not to mention that a string variable could have its reset_val changed.
* Beware of assuming the result value is good for very long.
*/
const char* GetConfigOptionResetString(const char* name)
{
struct config_generic* record = NULL;
char* buffer = t_thrd.buf_cxt.config_opt_reset_buf;
int size = sizeof(t_thrd.buf_cxt.config_opt_reset_buf);
int rc = 0;
record = find_option(name, false, ERROR);
if (record == NULL)
ereport(
ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("unrecognized configuration parameter \"%s\"", name)));
if ((record->flags & GUC_SUPERUSER_ONLY) && !superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE), errmsg("must be superuser to examine \"%s\"", name)));
switch (record->vartype) {
case PGC_BOOL:
return ((struct config_bool*)record)->reset_val ? "on" : "off";
case PGC_INT:
rc = snprintf_s(buffer, size, size - 1, "%d", ((struct config_int*)record)->reset_val);
securec_check_ss(rc, "\0", "\0");
return buffer;
case PGC_INT64:
rc = snprintf_s(buffer, size, size - 1, INT64_FORMAT, ((struct config_int64*)record)->reset_val);
securec_check_ss(rc, "\0", "\0");
return buffer;
case PGC_REAL:
rc = snprintf_s(buffer, size, size - 1, "%g", ((struct config_real*)record)->reset_val);
securec_check_ss(rc, "\0", "\0");
return buffer;
case PGC_STRING:
return ((struct config_string*)record)->reset_val;
case PGC_ENUM:
return config_enum_lookup_by_value((struct config_enum*)record, ((struct config_enum*)record)->reset_val);
}
return NULL;
}
/*
* flatten_set_variable_args
* Given a parsenode List as emitted by the grammar for SET,
* convert to the flat string representation used by GUC.
*
* We need to be told the name of the variable the args are for, because
* the flattening rules vary (ugh).
*
* The result is NULL if args is NIL (ie, SET ... TO DEFAULT), otherwise
* a palloc'd string.
*/
static char* flatten_set_variable_args(const char* name, List* args)
{
struct config_generic* record = NULL;
unsigned int flags;
StringInfoData buf;
ListCell* l = NULL;
/* Fast path if just DEFAULT */
if (args == NIL)
return NULL;
/*
* Get flags for the variable; if it's not known, use default flags.
* (Caller might throw error later, but not our business to do so here.)
*/
record = find_option(name, false, WARNING);
if (record != NULL)
flags = (unsigned int)record->flags;
else
flags = 0;
/* Complain if list input and non-list variable */
if ((flags & GUC_LIST_INPUT) == 0 && list_length(args) != 1)
ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("SET %s takes only one argument", name)));
initStringInfo(&buf);
/*
* Each list member may be a plain A_Const node, or an A_Const within a
* TypeCast; the latter case is supported only for ConstInterval arguments
* (for SET TIME ZONE).
*/
foreach (l, args) {
Node* arg = (Node*)lfirst(l);
char* val = NULL;
TypeName* typname = NULL;
A_Const* con = NULL;
if (l != list_head(args))
appendStringInfo(&buf, ", ");
if (IsA(arg, TypeCast)) {
TypeCast* tc = (TypeCast*)arg;
arg = tc->arg;
typname = tc->typname;
}
if (!IsA(arg, A_Const))
ereport(
ERROR, (errcode(ERRCODE_INVALID_OPERATION), errmsg("unrecognized node type: %d", (int)nodeTag(arg))));
con = (A_Const*)arg;
switch (nodeTag(&con->val)) {
case T_Integer:
appendStringInfo(&buf, "%ld", intVal(&con->val));
break;
case T_Float:
/* represented as a string, so just copy it */
appendStringInfoString(&buf, strVal(&con->val));
break;
case T_String:
case T_Null:
if (nodeTag(&con->val) == T_String)
val = strVal(&con->val);
else
val = "";
if (typname != NULL) {
/*
* Must be a ConstInterval argument for TIME ZONE. Coerce
* to interval and back to normalize the value and account
* for any typmod.
*/
Oid typoid;
int32 typmod;
Datum interval;
char* intervalout = NULL;
typenameTypeIdAndMod(NULL, typname, &typoid, &typmod);
Assert(typoid == INTERVALOID);
interval = DirectFunctionCall3(
interval_in, CStringGetDatum(val), ObjectIdGetDatum(InvalidOid), Int32GetDatum(typmod));
intervalout = DatumGetCString(DirectFunctionCall1(interval_out, interval));
appendStringInfo(&buf, "INTERVAL '%s'", intervalout);
} else {
/*
* Plain string literal or identifier. For quote mode,
* quote it if it's not a vanilla identifier.
*/
if (flags & GUC_LIST_QUOTE)
appendStringInfoString(&buf, quote_identifier(val));
else
appendStringInfoString(&buf, val);
}
break;
default:
ereport(ERROR,
(errcode(ERRCODE_INVALID_OPERATION),
errmsg("unrecognized node type: %d", (int)nodeTag(&con->val))));
break;
}
}
return buf.data;
}
#ifndef ENABLE_MULTIPLE_NODES
/*
* This function takes list of all configuration parameters in
* postgresql.conf and parameter to be updated as input arguments and
* replace the updated configuration parameter value in a list. If the
* parameter to be updated is new then it is appended to the list of
* parameters.
*/
static void replace_config_value(char** optlines, char* name, char* value, config_type vartype)
{
Assert(optlines != NULL);
int index = 0;
int optvalue_off = 0;
int optvalue_len = 0;
char* newline = (char*)pg_malloc(MAX_PARAM_LEN);
int rc = 0;
switch (vartype) {
case PGC_BOOL:
case PGC_INT:
case PGC_INT64:
case PGC_REAL:
case PGC_ENUM:
rc = snprintf_s(newline, MAX_PARAM_LEN, MAX_PARAM_LEN - 1, "%s = %s\n", name, value);
break;
case PGC_STRING:
rc = snprintf_s(newline, MAX_PARAM_LEN, MAX_PARAM_LEN - 1, "%s = '%s'\n", name, value);
break;
}
securec_check_ss(rc, "\0", "\0");
index = find_guc_option(optlines, name, NULL, NULL, &optvalue_off, &optvalue_len, true);
/* add or replace */
if (index == INVALID_LINES_IDX) {
/* find the first NULL point reserved. */
for (index = 0; optlines[index] != NULL; index++);
} else {
/* copy comment to newline and pfree old line */
rc = strncpy_s(newline + rc - 1, MAX_PARAM_LEN - rc,
optlines[index] + optvalue_off + optvalue_len, MAX_PARAM_LEN - rc - 1);
securec_check(rc, "\0", "\0");
if (optlines[index] != NULL) {
pfree(optlines[index]);
optlines[index] = NULL;
}
}
optlines[index] = newline;
}
/*
* Only the administrator can modify the GUC.
* gs_guc can only modify GUC locally, and Alter System Set is a supplement.
* But in the case of remote connection we cannot change some param,
* otherwise, there will be some security risks.
*/
static void CheckAlterSystemSetPrivilege(const char* name)
{
if (GetUserId() == BOOTSTRAP_SUPERUSERID) {
return;
} else if (superuser()) {
/* do nothing here, check black list later. */
} else {
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
(errmsg("Permission denied, must be sysadmin to execute ALTER SYSTEM SET command."))));
}
static char* blackList[] = {
"audit_copy_exec", "audit_data_format","audit_database_process", "audit_directory", "audit_dml_state",
"audit_dml_state_select", "audit_enabled", "audit_file_remain_threshold", "audit_file_remain_time",
"audit_function_exec", "audit_grant_revoke", "audit_login_logout", "audit_resource_policy",
"audit_rotation_interval", "audit_rotation_size", "audit_set_parameter", "audit_space_limit",
"audit_system_object", "audit_user_locked", "audit_user_violation",
"asp_log_directory", "config_file", "data_directory", "enable_access_server_directory",
"enable_copy_server_files", "external_pid_file", "hba_file", "ident_file", "log_directory", "perf_directory",
"query_log_directory", "ssl_ca_file", "ssl_cert_file", "ssl_crl_file", "ssl_key_file", "stats_temp_directory",
"unix_socket_directory", "unix_socket_group", "unix_socket_permissions",
"krb_caseins_users", "krb_server_keyfile", "krb_srvname", "allow_system_table_mods", "enableSeparationOfDuty",
"modify_initial_password", "password_encryption_type", "password_policy", "audit_xid_info",
NULL
};
for (int i = 0; blackList[i] != NULL; i++) {
if (pg_strcasecmp(name, blackList[i]) == 0) {
ereport(ERROR, (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
(errmsg("GUC:%s could only be set by initial user.", name))));
}
}
}
/*
* Persist the configuration parameter value.
*
* This function takes all previous configuration parameters
* set by ALTER SYSTEM command and the currently set ones
* and write them all to the automatic configuration file.
*
* The configuration parameters are written to a temporary
* file then renamed to the final name. The template for the
* temporary file is postgresql.auto.conf.temp.
*
* An LWLock is used to serialize writing to the same file.
*
* In case of an error, we leave the original automatic
* configuration file (postgresql.auto.conf) intact.
*/
static void CheckAndGetAlterSystemSetParam(AlterSystemStmt* altersysstmt,
char** outer_name, char** outer_value, struct config_generic** outer_record)
{
void* newextra = NULL;
char* value = NULL;
char* name = NULL;
struct config_generic *record = NULL;
CheckAlterSystemSetPrivilege(altersysstmt->setstmt->name);
/*
* Validate the name and arguments [value1, value2 ... ].
*/
name = altersysstmt->setstmt->name;
switch (altersysstmt->setstmt->kind) {
case VAR_SET_VALUE:
value = ExtractSetVariableArgs(altersysstmt->setstmt);
break;
case VAR_SET_DEFAULT:
ereport(ERROR,
(errcode(ERRCODE_OPERATE_NOT_SUPPORTED),
(errmsg("ALTER SYSTEM SET does not support 'set to default'."))));
default:
elog(ERROR, "unrecognized ALTER SYSTEM SET stmt type: %d",
altersysstmt->setstmt->kind);
}
record = find_option(name, false, LOG);
if (record == NULL)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("unrecognized configuration parameter \"%s\"", name)));
if ((record->context != PGC_POSTMASTER && record->context != PGC_SIGHUP && record->context != PGC_BACKEND) ||
record->flags & GUC_DISALLOW_IN_FILE)
ereport(ERROR,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("unsupport parameter: %s\n"
"ALTER SYSTEM SET only support POSTMASTER-level, SIGHUP-level and BACKEND-level guc variable,\n"
"and it must be allowed to set in postgresql.conf.", name)));
if (!validate_conf_option(record, name, value, PGC_S_FILE, ERROR, true, NULL, &newextra)) {
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid value for parameter \"%s\": \"%s\"", name, value)));
}
*outer_name = name;
*outer_value = value;
*outer_record = record;
}
/*
* rename ConfTmpBakFileName to ConfFileName.
* send signal to postmaster to reload postgresql.conf, POSTMASTER-level variable
* takes effect only after restarting the database, but we still need to reload so
* that we can send the changes to standby node.
*
* finally print a notice message.
*/
static void FinishAlterSystemSet(GucContext context)
{
if (gs_signal_send(PostmasterPid, SIGHUP)) {
ereport(WARNING, (errmsg("Failed to send signal to postmaster to reload guc config file.")));
return;
}
switch (context) {
case PGC_POSTMASTER:
ereport(NOTICE,
(errmsg("please restart the database for the POSTMASTER level parameter to take effect.")));
break;
case PGC_BACKEND:
ereport(NOTICE,
(errmsg("please reconnect the database for the BACKEND level parameter to take effect.")));
break;
default:
break;
}
}
static void ConfFileNameCat(char* ConfFileName, char* ConfTmpFileName,
char* ConfTmpBakFileName, char* ConfLockFileName)
{
errno_t rc;
rc = snprintf_s(ConfFileName, MAXPGPATH, MAXPGPATH - 1, "%s/%s", t_thrd.proc_cxt.DataDir, "postgresql.conf");
securec_check_ss(rc, "\0", "\0");
rc = snprintf_s(ConfTmpFileName, MAXPGPATH, MAXPGPATH - 1,
"%s/%s", t_thrd.proc_cxt.DataDir, "postgresql.conf.bak");
securec_check_ss(rc, "\0", "\0");
rc = snprintf_s(ConfLockFileName, MAXPGPATH, MAXPGPATH - 1,
"%s/%s", t_thrd.proc_cxt.DataDir, "postgresql.conf.lock");
securec_check_ss(rc, "\0", "\0");
rc = snprintf_s(ConfTmpBakFileName, MAXPGPATH, MAXPGPATH - 1,
"%s/%s", t_thrd.proc_cxt.DataDir, "postgresql.conf.bak_bak");
securec_check_ss(rc, "\0", "\0");
}
static void WriteAlterSystemSetGucFile(char* ConfFileName, char** opt_lines, ConfFileLock* filelock)
{
ErrCode ret;
ret = write_guc_file(ConfFileName, opt_lines);
release_opt_lines(opt_lines);
opt_lines = NULL;
if (ret != CODE_OK) {
release_file_lock(filelock);
LWLockRelease(ConfigFileLock);
ereport(ERROR,
(errcode(ERRCODE_FILE_WRITE_FAILED),
errmsg("write %s failed: %s.", ConfFileName, gs_strerror(ret))));
}
}
static char** LockAndReadConfFile(char* ConfFileName, char* ConfTmpFileName, char* ConfLockFileName,
ConfFileLock* filelock)
{
struct stat st;
char** opt_lines = NULL;
char* file = NULL;
if (stat(ConfFileName, &st) == 0) {
file = ConfFileName;
} else if (stat(ConfTmpFileName, &st) == 0) {
file = ConfTmpFileName;
}
/*
* Get the process lock (filelock) first, if success, acquire thread
* lock (ConfigFileLock) for config file, sleep until get the lock
*/
if (file != NULL && S_ISREG(st.st_mode) && get_file_lock(ConfLockFileName, filelock) == CODE_OK) {
LWLockAcquire(ConfigFileLock, LW_EXCLUSIVE);
opt_lines = read_guc_file(file);
} else {
ereport(ERROR,
(errcode(ERRCODE_FILE_READ_FAILED), errmsg("Can not open configure file.")));
}
if (opt_lines == NULL) {
release_file_lock(filelock);
/* release thread lock for config file */
LWLockRelease(ConfigFileLock);
ereport(ERROR, (errcode(ERRCODE_FILE_READ_FAILED), errmsg("Read configure file falied.")));
}
return opt_lines;
}
/*
* Persist the configuration parameter value.
*
* This function takes all previous configuration parameters
* set by ALTER SYSTEM command and the currently set ones
* and write them all to the automatic configuration file.
*
* The configuration parameters are written to a temporary
* file then renamed to the final name. The template for the
* temporary file is postgresql.conf.bak
*
* An LWLock is used to serialize writing to the same file.
*
* In case of an error, we leave the original automatic
* configuration file (postgresql.conf.bak) intact.
*
* There are two locks used to ensure changing of config file
* is multi-thread safe and multi-process safe:
* filelock: for multi-process safe
* ConfigFileLock: for multi-thread safe
* Both locks must be acquired before any changes of config file.
*
* filelock:
* is a ConfFileLock, creates a file "postgresql.conf.lock"
* as a lock for the config file "postgresql.conf", and uses
* flock() to ensure modification of config file is
* multi-process safe for mogdb and gs_guc processes.
*
* ConfigFileLock:
* is a LWLock, defined in lwlocknames.txt. is a global lock
* in mogdb and guarantees multi-thread safe access of config file.
*/
void AlterSystemSetConfigFile(AlterSystemStmt * altersysstmt)
{
char* name = NULL;
char* value = NULL;
char ConfFileName[MAXPGPATH];
char ConfTmpFileName[MAXPGPATH];
char ConfTmpBakFileName[MAXPGPATH];
char ConfLockFileName[MAXPGPATH];
char** opt_lines = NULL;
struct config_generic *record = NULL;
ConfFileLock filelock = {NULL, 0};
CheckAndGetAlterSystemSetParam(altersysstmt, &name, &value, &record);
ConfFileNameCat(ConfFileName, ConfTmpFileName, ConfTmpBakFileName, ConfLockFileName);
/*
* one backend is allowed to operate on postgresql.conf.bak file, to
* ensure that we need to update the contents of the file with
* ConfFileLock. To ensure crash safety, first the contents are written to
* temporary file and then rename it to postgresql.auto.conf. In case
* there exists a temp file from previous crash, that can be reused.
*/
opt_lines = LockAndReadConfFile(ConfFileName, ConfTmpFileName, ConfLockFileName, &filelock);
/*
* replace with new value if the configuration parameter already
* exists OR add it as a new cofiguration parameter in the file.
* and we should leave postgresql.conf.bak like gs_guc.
*/
replace_config_value(opt_lines, name, value, record->vartype);
WriteAlterSystemSetGucFile(ConfTmpFileName, opt_lines, &filelock);
opt_lines = read_guc_file(ConfTmpFileName);
WriteAlterSystemSetGucFile(ConfTmpBakFileName, opt_lines, &filelock);
opt_lines = NULL;
/*
* As the rename is atomic operation, if any problem occurs after this
* at max it can loose the parameters set by last ALTER SYSTEM SET
* command.
*/
if (rename(ConfTmpBakFileName, ConfFileName) < 0) {
release_file_lock(&filelock);
/* release thread lock for config file */
LWLockRelease(ConfigFileLock);
ereport(ERROR,
(errcode_for_file_access(),
errmsg("could not rename file \"%s\" to \"%s\"", ConfTmpFileName, ConfFileName)));
}
FinishAlterSystemSet(record->context);
release_file_lock(&filelock);
/* release thread lock for config file */
LWLockRelease(ConfigFileLock);
}
#endif
/*
* SET command
*/
void ExecSetVariableStmt(VariableSetStmt* stmt)
{
GucAction action = stmt->is_local ? GUC_ACTION_LOCAL : GUC_ACTION_SET;
A_Const* arg = NULL;
char* role = NULL;
char* passwd = NULL;
ListCell* phead = NULL;
switch (stmt->kind) {
case VAR_SET_VALUE:
case VAR_SET_CURRENT:
(void)set_config_option(stmt->name,
ExtractSetVariableArgs(stmt),
((superuser() || (isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)) ?
PGC_SUSET : PGC_USERSET),
PGC_S_SESSION,
action,
true,
0);
// switch the tablespace to the one with the same name as schema
// when we switch the current schema with search_path
if (!pg_strcasecmp(stmt->name, "search_path") || !pg_strcasecmp(stmt->name, "current_schema")) {
char* var = NULL;
char* spcname = NULL;
if (!pg_strcasecmp(stmt->name, "search_path")) {
var = "current_schema";
} else {
var = "search_path";
}
(void)set_config_option(var,
ExtractSetVariableArgs(stmt),
((superuser() || (isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)) ?
PGC_SUSET : PGC_USERSET),
PGC_S_SESSION,
action,
true,
0);
/* must not be null */
if (!PointerIsValid(stmt->args)) {
break;
}
/* get parameter as string */
spcname = ExtractSetVariableArgs(stmt);
if (spcname != NULL) {
ListCell *item = NULL;
bool hasAccessFirstItem = false;
foreach(item, stmt->args) {
if (!hasAccessFirstItem) {
hasAccessFirstItem = true;
continue;
}
A_Const *con = castNode(A_Const, lfirst(item));
if (!IsA(&con->val, String)) {
continue;
}
char *val = strVal(&con->val);
if (IS_TEMP_NAMESPACE(val) || IS_CATALOG_NAMESPACE(val)) {
ereport(WARNING,
(errmsg("It is invalid to set pg_temp or pg_catalog behind other schemas "
"in search path explicitly. The priority order is pg_temp, pg_catalog"
" and other schemas.")));
break;
}
}
}
if (SUPPORT_BIND_TABLESPACE) {
/* must be one item */
if (1 != stmt->args->length) {
break;
}
/* get the tablespace id that has the same name as parameter */
if (OidIsValid(get_tablespace_oid(spcname, true))) {
(void)set_config_option("default_tablespace",
spcname,
((superuser() || (isOperatoradmin(GetUserId()) &&
u_sess->attr.attr_security.operation_mode)) ? PGC_SUSET : PGC_USERSET),
PGC_S_SESSION,
action,
true,
0);
}
}
}
break;
case VAR_SET_MULTI:
/*
* Special-case SQL syntaxes. The TRANSACTION and SESSION
* CHARACTERISTICS cases effectively set more than one variable
* per statement. TRANSACTION SNAPSHOT only takes one argument,
* but we put it here anyway since it's a special case and not
* related to any GUC variable.
*/
if (strcmp(stmt->name, "TRANSACTION") == 0) {
ListCell* head = NULL;
foreach (head, stmt->args) {
DefElem* item = (DefElem*)lfirst(head);
if (strcmp(item->defname, "transaction_isolation") == 0)
SetPGVariable("transaction_isolation", list_make1(item->arg), stmt->is_local);
else if (strcmp(item->defname, "transaction_read_only") == 0)
SetPGVariable("transaction_read_only", list_make1(item->arg), stmt->is_local);
else if (strcmp(item->defname, "transaction_deferrable") == 0)
SetPGVariable("transaction_deferrable", list_make1(item->arg), stmt->is_local);
else
ereport(ERROR,
(errcode(ERRCODE_INVALID_OPERATION),
errmsg("unexpected SET TRANSACTION element: %s", item->defname)));
}
} else if (strcmp(stmt->name, "SESSION CHARACTERISTICS") == 0) {
ListCell* head = NULL;
foreach (head, stmt->args) {
DefElem* item = (DefElem*)lfirst(head);
if (strcmp(item->defname, "transaction_isolation") == 0)
SetPGVariable("default_transaction_isolation", list_make1(item->arg), stmt->is_local);
else if (strcmp(item->defname, "transaction_read_only") == 0)
SetPGVariable("default_transaction_read_only", list_make1(item->arg), stmt->is_local);
else if (strcmp(item->defname, "transaction_deferrable") == 0)
SetPGVariable("default_transaction_deferrable", list_make1(item->arg), stmt->is_local);
else
ereport(ERROR,
(errcode(ERRCODE_INVALID_OPERATION),
errmsg("unexpected SET SESSION element: %s", item->defname)));
}
} else if (strcmp(stmt->name, "TRANSACTION SNAPSHOT") == 0) {
A_Const* con = (A_Const*)linitial(stmt->args);
if (stmt->is_local)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("SET LOCAL TRANSACTION SNAPSHOT is not implemented")));
Assert(IsA(con, A_Const));
Assert(nodeTag(&con->val) == T_String || (nodeTag(&con->val) == T_Null && strVal(&con->val) != NULL));
ImportSnapshot(strVal(&con->val));
} else
ereport(ERROR,
(errcode(ERRCODE_INVALID_OPERATION), errmsg("unexpected SET MULTI element: %s", stmt->name)));
break;
case VAR_SET_ROLEPWD:
if ((NULL == stmt->name) ||
((strcmp(stmt->name, "role") != 0) && pg_strcasecmp(stmt->name, "session_authorization") != 0)) {
ereport(ERROR, (errcode(ERRCODE_INVALID_OPERATION), errmsg("unexpected SET name: %s", stmt->name)));
break;
}
/* OK, Get role and pwd from arguments */
role = NULL;
passwd = NULL;
phead = NULL;
phead = list_head(stmt->args);
if (phead != NULL) {
/* role */
arg = (A_Const*)linitial(stmt->args);
if (NULL == arg) {
ereport(ERROR, (errcode(ERRCODE_SYSTEM_ERROR), errmsg("role name in the set command is empty.")));
break;
}
/* check the existence of role and verify the password */
role = strVal(&arg->val);
if (lnext(phead)) {
arg = (A_Const*)lsecond(stmt->args);
if (NULL != arg) {
passwd = strVal(&arg->val);
}
}
if (pg_strcasecmp(stmt->name, "session_authorization") == 0) {
check_setrole_permission(role, passwd, false);
if (!verify_setrole_passwd(role, passwd, false)) {
str_reset(passwd);
ereport(ERROR,
(errcode(ERRCODE_SYSTEM_ERROR),
errmsg("verify set session_authorization and passwd failed.")));
break;
}
} else {
check_setrole_permission(role, passwd, true);
if (!verify_setrole_passwd(role, passwd, true)) {
str_reset(passwd);
ereport(ERROR, (errcode(ERRCODE_SYSTEM_ERROR), errmsg("verify set role and passwd failed.")));
break;
}
}
/* passwd is sensitive info, it should be cleaned when it's useless */
str_reset(passwd);
}
(void)set_config_option(stmt->name, role,
((superuser() || (isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)) ?
PGC_SUSET : PGC_USERSET), PGC_S_SESSION, action, true, 0);
break;
case VAR_SET_DEFAULT:
case VAR_RESET:
(void)set_config_option(stmt->name, NULL,
((superuser() || (isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)) ?
PGC_SUSET : PGC_USERSET), PGC_S_SESSION, action, true, 0);
if (!pg_strcasecmp(stmt->name, "search_path") || !pg_strcasecmp(stmt->name, "current_schema")) {
char* var = NULL;
if (!pg_strcasecmp(stmt->name, "search_path")) {
var = "current_schema";
} else {
var = "search_path";
}
(void)set_config_option(var, NULL,
((superuser() || (isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)) ?
PGC_SUSET : PGC_USERSET), PGC_S_SESSION, action, true, 0);
}
if (IS_PGXC_COORDINATOR && pg_strcasecmp(stmt->name, "session_authorization") == 0) {
/* cmd:
* RESET SESSION AUTHORIZATION;
* this cmd will reset SESSION_USER and CURRENT_USER
* we need delete params "role" if exist
*/
(void)delete_pooler_session_params("role");
(void)delete_pooler_session_params("session_authorization");
}
break;
case VAR_RESET_ALL:
ResetAllOptions();
break;
default:
break;
}
}
/*
* Get the value to assign for a VariableSetStmt, or NULL if it's RESET.
* The result is palloc'd.
*
* This is exported for use by actions such as ALTER ROLE SET.
*/
char* ExtractSetVariableArgs(VariableSetStmt* stmt)
{
switch (stmt->kind) {
case VAR_SET_VALUE:
return flatten_set_variable_args(stmt->name, stmt->args);
case VAR_SET_CURRENT:
return GetConfigOptionByName(stmt->name, NULL);
default:
return NULL;
}
}
/*
* SetPGVariable - SET command exported as an easily-C-callable function.
*
* This provides access to SET TO value, as well as SET TO DEFAULT (expressed
* by passing args == NIL), but not SET FROM CURRENT functionality.
*/
void SetPGVariable(const char* name, List* args, bool is_local)
{
char* argstring = flatten_set_variable_args(name, args);
/* Note SET DEFAULT (argstring == NULL) is equivalent to RESET */
(void)set_config_option(name, argstring,
((superuser() || (isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)) ?
PGC_SUSET : PGC_USERSET), PGC_S_SESSION, is_local ? GUC_ACTION_LOCAL : GUC_ACTION_SET, true, 0);
}
/*
* SET command wrapped as a SQL callable function.
*/
Datum set_config_by_name(PG_FUNCTION_ARGS)
{
char* name = NULL;
char* value = NULL;
char* new_value = NULL;
bool is_local = false;
if (PG_ARGISNULL(0))
ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("SET requires parameter name")));
/* Get the GUC variable name */
name = TextDatumGetCString(PG_GETARG_DATUM(0));
/* Get the desired value or set to NULL for a reset request */
if (PG_ARGISNULL(1))
value = NULL;
else
value = TextDatumGetCString(PG_GETARG_DATUM(1));
/*
* Get the desired state of is_local. Default to false if provided value
* is NULL
*/
if (PG_ARGISNULL(2))
is_local = false;
else
is_local = PG_GETARG_BOOL(2);
/* Note SET DEFAULT (argstring == NULL) is equivalent to RESET */
(void)set_config_option(name,
value,
((superuser() || (isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)) ?
PGC_SUSET : PGC_USERSET),
PGC_S_SESSION,
is_local ? GUC_ACTION_LOCAL : GUC_ACTION_SET,
true,
0);
/* get the new current value */
new_value = GetConfigOptionByName(name, NULL);
#ifdef PGXC
/*
* Convert this to SET statement and pass it to pooler.
* If command is local and we are not in a transaction block do NOT
* send this query to backend nodes, it is just bypassed by the backend.
*/
if (IS_PGXC_COORDINATOR && !IsConnFromCoord() && (!is_local || IsTransactionBlock())) {
PoolCommandType poolcmdType = (is_local ? POOL_CMD_LOCAL_SET : POOL_CMD_GLOBAL_SET);
StringInfoData poolcmd;
initStringInfo(&poolcmd);
appendStringInfo(&poolcmd, "SET %s %s TO %s", (is_local ? "LOCAL" : ""), name, (value ? value : "DEFAULT"));
// Add retry query error code ERRCODE_SET_QUERY for error "ERROR SET query".
if (PoolManagerSetCommand(poolcmdType, poolcmd.data) < 0)
ereport(ERROR, (errcode(ERRCODE_SET_QUERY), errmsg("openGauss: ERROR SET query")));
}
#endif
/* Convert return string to text */
PG_RETURN_TEXT_P(cstring_to_text(new_value));
}
/*
* Common code for DefineCustomXXXVariable subroutines: allocate the
* new variable's config struct and fill in generic fields.
*/
static struct config_generic* init_custom_variable(const char* name, const char* short_desc, const char* long_desc,
GucContext context, int flags, enum config_type type, size_t sz)
{
struct config_generic* gen = NULL;
errno_t rc = 0;
/*
* Only allow custom PGC_POSTMASTER variables to be created during shared
* library preload; any later than that, we can't ensure that the value
* doesn't change after startup. This is a fatal elog if it happens; just
* erroring out isn't safe because we don't know what the calling loadable
* module might already have hooked into.
*/
if (context == PGC_POSTMASTER && !u_sess->misc_cxt.process_shared_preload_libraries_in_progress)
ereport(FATAL, (errmsg("cannot create PGC_POSTMASTER variables after startup")));
gen = (struct config_generic*)guc_malloc(ERROR, sz);
rc = memset_s(gen, sz, 0, sz);
securec_check(rc, "\0", "\0");
gen->name = guc_strdup(ERROR, name);
gen->context = context;
gen->group = CUSTOM_OPTIONS;
gen->short_desc = short_desc;
gen->long_desc = long_desc;
gen->flags = flags;
gen->vartype = type;
return gen;
}
/*
* Common code for DefineCustomXXXVariable subroutines: insert the new
* variable into the GUC variable array, replacing any placeholder.
*/
static void define_custom_variable(struct config_generic* variable)
{
const char* name = variable->name;
const char** nameAddr = &name;
struct config_string* pHolder = NULL;
struct config_generic** res;
/*
* See if there's a placeholder by the same name.
*/
res = (struct config_generic**)bsearch((void*)&nameAddr,
(void*)u_sess->guc_variables,
u_sess->num_guc_variables,
sizeof(struct config_generic*),
guc_var_compare);
if (res == NULL) {
/*
* No placeholder to replace, so we can just add it ... but first,
* make sure it's initialized to its default value.
*/
InitializeOneGUCOption(variable);
add_guc_variable(variable, ERROR);
return;
}
/*
* This better be a placeholder
*/
if (((unsigned int)(*res)->flags & GUC_CUSTOM_PLACEHOLDER) == 0)
ereport(ERROR, (errcode(ERRCODE_SYSTEM_ERROR), errmsg("attempt to redefine parameter \"%s\"", name)));
Assert((*res)->vartype == PGC_STRING);
pHolder = (struct config_string*)(*res);
/*
* First, set the variable to its default value. We must do this even
* though we intend to immediately apply a new value, since it's possible
* that the new value is invalid.
*/
InitializeOneGUCOption(variable);
/*
* Replace the placeholder. We aren't changing the name, so no re-sorting
* is necessary
*/
*res = variable;
/*
* Assign the string value(s) stored in the placeholder to the real
* variable. Essentially, we need to duplicate all the active and stacked
* values, but with appropriate validation and datatype adjustment.
*
* If an assignment fails, we report a WARNING and keep going. We don't
* want to throw ERROR for bad values, because it'd bollix the add-on
* module that's presumably halfway through getting loaded. In such cases
* the default or previous state will become active instead.
*/
/* First, apply the reset value if any */
if (pHolder->reset_val)
(void)set_config_option(name,
pHolder->reset_val,
pHolder->gen.reset_scontext,
pHolder->gen.reset_source,
GUC_ACTION_SET,
true,
WARNING);
/* That should not have resulted in stacking anything */
Assert(variable->stack == NULL);
/* Now, apply current and stacked values, in the order they were stacked */
reapply_stacked_values(
variable, pHolder, pHolder->gen.stack, *(pHolder->variable), pHolder->gen.scontext, pHolder->gen.source);
/* Also copy over any saved source-location information */
if (pHolder->gen.sourcefile)
set_config_sourcefile(name, pHolder->gen.sourcefile, pHolder->gen.sourceline);
/*
* Free up as much as we conveniently can of the placeholder structure.
* (This neglects any stack items, so it's possible for some memory to be
* leaked. Since this can only happen once per session per variable, it
* doesn't seem worth spending much code on.)
*/
set_string_field(pHolder, pHolder->variable, NULL);
set_string_field(pHolder, &pHolder->reset_val, NULL);
pfree(pHolder);
}
/*
* Recursive subroutine for define_custom_variable: reapply non-reset values
*
* We recurse so that the values are applied in the same order as originally.
* At each recursion level, apply the upper-level value (passed in) in the
* fashion implied by the stack entry.
*/
static void reapply_stacked_values(struct config_generic* variable, struct config_string* pHolder, GucStack* stack,
const char* curvalue, GucContext curscontext, GucSource cursource)
{
const char* name = variable->name;
GucStack* oldvarstack = variable->stack;
if (stack != NULL) {
/* First, recurse, so that stack items are processed bottom to top */
reapply_stacked_values(
variable, pHolder, stack->prev, stack->prior.val.stringval, stack->scontext, stack->source);
/* See how to apply the passed-in value */
switch (stack->state) {
case GUC_SAVE:
(void)set_config_option(name, curvalue, curscontext, cursource, GUC_ACTION_SAVE, true, WARNING);
break;
case GUC_SET:
(void)set_config_option(name, curvalue, curscontext, cursource, GUC_ACTION_SET, true, WARNING);
break;
case GUC_LOCAL:
(void)set_config_option(name, curvalue, curscontext, cursource, GUC_ACTION_LOCAL, true, WARNING);
break;
case GUC_SET_LOCAL:
/* first, apply the masked value as SET */
(void)set_config_option(name,
stack->masked.val.stringval,
stack->masked_scontext,
PGC_S_SESSION,
GUC_ACTION_SET,
true,
WARNING);
/* then apply the current value as LOCAL */
(void)set_config_option(name, curvalue, curscontext, cursource, GUC_ACTION_LOCAL, true, WARNING);
break;
default:
break;
}
/* If we successfully made a stack entry, adjust its nest level */
if (variable->stack && variable->stack != oldvarstack)
variable->stack->nest_level = stack->nest_level;
} else {
/*
* We are at the end of the stack. If the active/previous value is
* different from the reset value, it must represent a previously
* committed session value. Apply it, and then drop the stack entry
* that set_config_option will have created under the impression that
* this is to be just a transactional assignment. (We leak the stack
* entry.)
*/
if (curvalue != pHolder->reset_val || curscontext != pHolder->gen.reset_scontext ||
cursource != pHolder->gen.reset_source) {
(void)set_config_option(name, curvalue, curscontext, cursource, GUC_ACTION_SET, true, WARNING);
variable->stack = NULL;
}
}
}
void DefineCustomBoolVariable(const char* name, const char* short_desc, const char* long_desc, bool* valueAddr,
bool bootValue, GucContext context, int flags, GucBoolCheckHook check_hook, GucBoolAssignHook assign_hook,
GucShowHook show_hook)
{
struct config_bool* var = NULL;
var = (struct config_bool*)init_custom_variable(
name, short_desc, long_desc, context, flags, PGC_BOOL, sizeof(struct config_bool));
var->variable = valueAddr;
var->boot_val = bootValue;
var->reset_val = bootValue;
var->check_hook = check_hook;
var->assign_hook = assign_hook;
var->show_hook = show_hook;
define_custom_variable(&var->gen);
}
void DefineCustomIntVariable(const char* name, const char* short_desc, const char* long_desc, int* valueAddr,
int bootValue, int minValue, int maxValue, GucContext context, int flags, GucIntCheckHook check_hook,
GucIntAssignHook assign_hook, GucShowHook show_hook)
{
struct config_int* var = NULL;
var = (struct config_int*)init_custom_variable(
name, short_desc, long_desc, context, flags, PGC_INT, sizeof(struct config_int));
var->variable = valueAddr;
var->boot_val = bootValue;
var->reset_val = bootValue;
var->min = minValue;
var->max = maxValue;
var->check_hook = check_hook;
var->assign_hook = assign_hook;
var->show_hook = show_hook;
define_custom_variable(&var->gen);
}
void DefineCustomInt64Variable(const char* name, const char* short_desc, const char* long_desc, int64* valueAddr,
int64 bootValue, int64 minValue, int64 maxValue, GucContext context, int flags, GucInt64CheckHook check_hook,
GucInt64AssignHook assign_hook, GucShowHook show_hook)
{
struct config_int64* var = NULL;
var = (struct config_int64*)init_custom_variable(
name, short_desc, long_desc, context, flags, PGC_INT64, sizeof(struct config_int64));
var->variable = valueAddr;
var->boot_val = bootValue;
var->reset_val = bootValue;
var->min = minValue;
var->max = maxValue;
var->check_hook = check_hook;
var->assign_hook = assign_hook;
var->show_hook = show_hook;
define_custom_variable(&var->gen);
}
void DefineCustomRealVariable(const char* name, const char* short_desc, const char* long_desc, double* valueAddr,
double bootValue, double minValue, double maxValue, GucContext context, int flags, GucRealCheckHook check_hook,
GucRealAssignHook assign_hook, GucShowHook show_hook)
{
struct config_real* var = NULL;
var = (struct config_real*)init_custom_variable(
name, short_desc, long_desc, context, flags, PGC_REAL, sizeof(struct config_real));
var->variable = valueAddr;
var->boot_val = bootValue;
var->reset_val = bootValue;
var->min = minValue;
var->max = maxValue;
var->check_hook = check_hook;
var->assign_hook = assign_hook;
var->show_hook = show_hook;
define_custom_variable(&var->gen);
}
void DefineCustomStringVariable(const char* name, const char* short_desc, const char* long_desc, char** valueAddr,
const char* bootValue, GucContext context, int flags, GucStringCheckHook check_hook,
GucStringAssignHook assign_hook, GucShowHook show_hook)
{
struct config_string* var = NULL;
var = (struct config_string*)init_custom_variable(
name, short_desc, long_desc, context, flags, PGC_STRING, sizeof(struct config_string));
var->variable = valueAddr;
var->boot_val = bootValue;
var->check_hook = check_hook;
var->assign_hook = assign_hook;
var->show_hook = show_hook;
define_custom_variable(&var->gen);
}
void DefineCustomEnumVariable(const char* name, const char* short_desc, const char* long_desc, int* valueAddr,
int bootValue, const struct config_enum_entry* options, GucContext context, int flags, GucEnumCheckHook check_hook,
GucEnumAssignHook assign_hook, GucShowHook show_hook)
{
struct config_enum* var = NULL;
var = (struct config_enum*)init_custom_variable(
name, short_desc, long_desc, context, flags, PGC_ENUM, sizeof(struct config_enum));
var->variable = valueAddr;
var->boot_val = bootValue;
var->reset_val = bootValue;
var->options = options;
var->check_hook = check_hook;
var->assign_hook = assign_hook;
var->show_hook = show_hook;
define_custom_variable(&var->gen);
}
void EmitWarningsOnPlaceholders(const char* className)
{
int classLen = strlen(className);
int i;
for (i = 0; i < u_sess->num_guc_variables; i++) {
struct config_generic* var = u_sess->guc_variables[i];
if ((var->flags & GUC_CUSTOM_PLACEHOLDER) != 0 && strncmp(className, var->name, classLen) == 0 &&
var->name[classLen] == GUC_QUALIFIER_SEPARATOR) {
ereport(WARNING,
(errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("unrecognized configuration parameter \"%s\"", var->name)));
}
}
}
/*
* SHOW command
*/
void GetPGVariable(const char* name, const char* likename, DestReceiver* dest)
{
if (guc_name_compare(name, "all") == 0) {
ShowAllGUCConfig(likename, dest);
} else {
ShowGUCConfigOption(name, dest);
}
}
TupleDesc GetPGVariableResultDesc(const char* name)
{
TupleDesc tupdesc;
if (guc_name_compare(name, "all") == 0) {
/* need a tuple descriptor representing three TEXT columns */
tupdesc = CreateTemplateTupleDesc(3, false, TAM_HEAP);
TupleDescInitEntry(tupdesc, (AttrNumber)1, "name", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)2, "setting", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)3, "description", TEXTOID, -1, 0);
} else {
const char* varname = NULL;
/* Get the canonical spelling of name */
(void)GetConfigOptionByName(name, &varname);
/* need a tuple descriptor representing a single TEXT column */
tupdesc = CreateTemplateTupleDesc(1, false, TAM_HEAP);
TupleDescInitEntry(tupdesc, (AttrNumber)1, varname, TEXTOID, -1, 0);
}
return tupdesc;
}
/*
* SHOW command
*/
static void ShowGUCConfigOption(const char* name, DestReceiver* dest)
{
TupOutputState* tstate = NULL;
TupleDesc tupdesc;
const char* varname = NULL;
char* value = NULL;
/* Get the value and canonical spelling of name */
value = GetConfigOptionByName(name, &varname);
/* need a tuple descriptor representing a single TEXT column */
tupdesc = CreateTemplateTupleDesc(1, false, TAM_HEAP);
TupleDescInitEntry(tupdesc, (AttrNumber)1, varname, TEXTOID, -1, 0);
/* prepare for projection of tuples */
tstate = begin_tup_output_tupdesc(dest, tupdesc);
/* Send it */
do_text_output_oneline(tstate, value);
end_tup_output(tstate);
}
/*
* SHOW ALL command
*/
static void ShowAllGUCConfig(const char* likename, DestReceiver* dest)
{
bool am_superuser = superuser();
int i;
TupOutputState* tstate = NULL;
TupleDesc tupdesc;
Datum values[3];
bool isnull[3] = {false, false, false};
/* need a tuple descriptor representing three TEXT columns */
tupdesc = CreateTemplateTupleDesc(3, false, TAM_HEAP);
TupleDescInitEntry(tupdesc, (AttrNumber)1, "name", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)2, "setting", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)3, "description", TEXTOID, -1, 0);
/* prepare for projection of tuples */
tstate = begin_tup_output_tupdesc(dest, tupdesc);
for (i = 0; i < u_sess->num_guc_variables; i++) {
struct config_generic* conf = u_sess->guc_variables[i];
char* setting = NULL;
unsigned int flags = (unsigned int)conf->flags;
if ((flags & GUC_NO_SHOW_ALL) || ((flags & GUC_SUPERUSER_ONLY) && !am_superuser))
continue;
if (likename != NULL && strstr((char*)conf->name, likename) == NULL) {
continue;
}
/* assign to the values array */
values[0] = PointerGetDatum(cstring_to_text(conf->name));
setting = _ShowOption(conf, true);
if (setting != NULL) {
values[1] = PointerGetDatum(cstring_to_text(setting));
isnull[1] = false;
} else {
values[1] = PointerGetDatum(NULL);
isnull[1] = true;
}
values[2] = PointerGetDatum(cstring_to_text(conf->short_desc));
/* send it to dest */
do_tup_output(tstate, values, 3, isnull, 3);
/* clean up */
pfree(DatumGetPointer(values[0]));
if (setting != NULL) {
pfree(setting);
pfree(DatumGetPointer(values[1]));
}
pfree(DatumGetPointer(values[2]));
}
end_tup_output(tstate);
}
/*
* Return GUC variable value by name; optionally return canonical
* form of name. Return value is palloc'd.
*/
char* GetConfigOptionByName(const char* name, const char** varname)
{
struct config_generic* record = NULL;
record = find_option(name, false, ERROR);
if (record == NULL)
ereport(
ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("unrecognized configuration parameter \"%s\"", name)));
if ((record->flags & GUC_SUPERUSER_ONLY) && !superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE), errmsg("must be superuser to examine \"%s\"", name)));
if (varname != NULL)
*varname = record->name;
return _ShowOption(record, true);
}
/*
* Return GUC variable value by variable number; optionally return canonical
* form of name. Return value is palloc'd.
*/
void GetConfigOptionByNum(int varnum, const char** values, bool* noshow)
{
char buffer[256];
struct config_generic* conf = NULL;
int rc = 0;
/* check requested variable number valid */
Assert((varnum >= 0) && (varnum < u_sess->num_guc_variables));
conf = u_sess->guc_variables[varnum];
if (noshow != NULL) {
if ((conf->flags & GUC_NO_SHOW_ALL) ||
((conf->flags & GUC_SUPERUSER_ONLY) && !superuser()))
*noshow = true;
else
*noshow = false;
}
/* first get the generic attributes */
/* name */
values[0] = conf->name;
/* setting : use _ShowOption in order to avoid duplicating the logic */
values[1] = _ShowOption(conf, false);
/* unit */
if (conf->vartype == PGC_INT || conf->vartype == PGC_REAL) {
char buf[8];
switch (conf->flags & (GUC_UNIT_MEMORY | GUC_UNIT_TIME)) {
case GUC_UNIT_KB:
values[2] = "kB";
break;
case GUC_UNIT_BLOCKS:
rc = snprintf_s(buf, sizeof(buf), sizeof(buf) - 1, "%dkB", BLCKSZ / 1024);
securec_check_ss(rc, "\0", "\0");
values[2] = pstrdup(buf);
break;
case GUC_UNIT_XBLOCKS:
rc = snprintf_s(buf, sizeof(buf), sizeof(buf) - 1, "%dkB", XLOG_BLCKSZ / 1024);
securec_check_ss(rc, "\0", "\0");
values[2] = pstrdup(buf);
break;
case GUC_UNIT_MS:
values[2] = "ms";
break;
case GUC_UNIT_S:
values[2] = "s";
break;
case GUC_UNIT_MIN:
values[2] = "min";
break;
case GUC_UNIT_HOUR:
values[2] = "hour";
break;
case GUC_UNIT_DAY:
values[2] = "d";
break;
default:
values[2] = "";
break;
}
} else
values[2] = NULL;
/* group */
values[3] = config_group_names[conf->group];
/* short_desc */
values[4] = conf->short_desc;
/* extra_desc */
values[5] = conf->long_desc;
/* context */
values[6] = GucContext_Names[conf->context];
/* vartype */
values[7] = config_type_names[conf->vartype];
/* source */
values[8] = GucSource_Names[conf->source];
/* now get the type specifc attributes */
switch (conf->vartype) {
case PGC_BOOL: {
struct config_bool* lconf = (struct config_bool*)conf;
/* min_val */
values[9] = NULL;
/* max_val */
values[10] = NULL;
/* enumvals */
values[11] = NULL;
/* boot_val */
values[12] = pstrdup(lconf->boot_val ? "on" : "off");
/* reset_val */
values[13] = pstrdup(lconf->reset_val ? "on" : "off");
} break;
case PGC_INT: {
struct config_int* lconf = (struct config_int*)conf;
/* min_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, "%d", lconf->min);
securec_check_ss(rc, "\0", "\0");
values[9] = pstrdup(buffer);
/* max_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, "%d", lconf->max);
securec_check_ss(rc, "\0", "\0");
values[10] = pstrdup(buffer);
/* enumvals */
values[11] = NULL;
/* boot_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, "%d", lconf->boot_val);
securec_check_ss(rc, "\0", "\0");
values[12] = pstrdup(buffer);
/* reset_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, "%d", lconf->reset_val);
securec_check_ss(rc, "\0", "\0");
values[13] = pstrdup(buffer);
} break;
case PGC_INT64: {
struct config_int64* lconf = (struct config_int64*)conf;
/* min_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, INT64_FORMAT, lconf->min);
securec_check_ss(rc, "\0", "\0");
values[9] = pstrdup(buffer);
/* max_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, INT64_FORMAT, lconf->max);
securec_check_ss(rc, "\0", "\0");
values[10] = pstrdup(buffer);
/* enumvals */
values[11] = NULL;
/* boot_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, INT64_FORMAT, lconf->boot_val);
securec_check_ss(rc, "\0", "\0");
values[12] = pstrdup(buffer);
/* reset_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, INT64_FORMAT, lconf->reset_val);
securec_check_ss(rc, "\0", "\0");
values[13] = pstrdup(buffer);
} break;
case PGC_REAL: {
struct config_real* lconf = (struct config_real*)conf;
/* min_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, "%g", lconf->min);
securec_check_ss(rc, "\0", "\0");
values[9] = pstrdup(buffer);
/* max_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, "%g", lconf->max);
securec_check_ss(rc, "\0", "\0");
values[10] = pstrdup(buffer);
/* enumvals */
values[11] = NULL;
/* boot_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, "%g", lconf->boot_val);
securec_check_ss(rc, "\0", "\0");
values[12] = pstrdup(buffer);
/* reset_val */
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, "%g", lconf->reset_val);
securec_check_ss(rc, "\0", "\0");
values[13] = pstrdup(buffer);
} break;
case PGC_STRING: {
struct config_string* lconf = (struct config_string*)conf;
/* min_val */
values[9] = NULL;
/* max_val */
values[10] = NULL;
/* enumvals */
values[11] = NULL;
/* boot_val */
if (lconf->boot_val == NULL)
values[12] = NULL;
else
values[12] = pstrdup(lconf->boot_val);
/* reset_val */
if (lconf->reset_val == NULL)
values[13] = NULL;
else
values[13] = pstrdup(lconf->reset_val);
} break;
case PGC_ENUM: {
struct config_enum* lconf = (struct config_enum*)conf;
/* min_val */
values[9] = NULL;
/* max_val */
values[10] = NULL;
/* enumvals */
/*
* NOTE! enumvals with double quotes in them are not
* supported!
*/
values[11] = config_enum_get_options((struct config_enum*)conf, "{\"", "\"}", "\",\"");
/* boot_val */
values[12] = pstrdup(config_enum_lookup_by_value(lconf, lconf->boot_val));
/* reset_val */
values[13] = pstrdup(config_enum_lookup_by_value(lconf, lconf->reset_val));
} break;
default: {
/*
* should never get here, but in case we do, set 'em to NULL
*/
/* min_val */
values[9] = NULL;
/* max_val */
values[10] = NULL;
/* enumvals */
values[11] = NULL;
/* boot_val */
values[12] = NULL;
/* reset_val */
values[13] = NULL;
} break;
}
/*
* If the setting came from a config file, set the source location. For
* security reasons, we don't show source file/line number for
* non-superusers.
*/
if (conf->source == PGC_S_FILE && (superuser() ||
(isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode))) {
values[14] = conf->sourcefile;
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, "%d", conf->sourceline);
securec_check_ss(rc, "\0", "\0");
values[15] = pstrdup(buffer);
} else {
values[14] = NULL;
values[15] = NULL;
}
}
/*
* Return the total number of GUC variables
*/
int GetNumConfigOptions(void)
{
return u_sess->num_guc_variables;
}
/*
* show_config_by_name - equiv to SHOW X command but implemented as
* a function.
*/
Datum show_config_by_name(PG_FUNCTION_ARGS)
{
char* varname = NULL;
char* varval = NULL;
/* Get the GUC variable name */
varname = TextDatumGetCString(PG_GETARG_DATUM(0));
/* Get the value */
varval = GetConfigOptionByName(varname, NULL);
/* Convert to text */
PG_RETURN_TEXT_P(cstring_to_text(varval));
}
/*
* show_all_settings - equiv to SHOW ALL command but implemented as
* a Table Function.
*/
#define NUM_PG_SETTINGS_ATTS 16
Datum show_all_settings(PG_FUNCTION_ARGS)
{
FuncCallContext* funcctx = NULL;
TupleDesc tupdesc;
int call_cntr;
int max_calls;
AttInMetadata* attinmeta = NULL;
MemoryContext oldcontext;
/* stuff done only on the first call of the function */
if (SRF_IS_FIRSTCALL()) {
/* create a function context for cross-call persistence */
funcctx = SRF_FIRSTCALL_INIT();
/*
* switch to memory context appropriate for multiple function calls
*/
oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);
/*
* need a tuple descriptor representing NUM_PG_SETTINGS_ATTS columns
* of the appropriate types
*/
tupdesc = CreateTemplateTupleDesc(NUM_PG_SETTINGS_ATTS, false, TAM_HEAP);
TupleDescInitEntry(tupdesc, (AttrNumber)1, "name", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)2, "setting", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)3, "unit", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)4, "category", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)5, "short_desc", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)6, "extra_desc", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)7, "context", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)8, "vartype", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)9, "source", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)10, "min_val", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)11, "max_val", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)12, "enumvals", TEXTARRAYOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)13, "boot_val", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)14, "reset_val", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)15, "sourcefile", TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber)16, "sourceline", INT4OID, -1, 0);
/*
* Generate attribute metadata needed later to produce tuples from raw
* C strings
*/
attinmeta = TupleDescGetAttInMetadata(tupdesc);
funcctx->attinmeta = attinmeta;
/* total number of tuples to be returned */
funcctx->max_calls = GetNumConfigOptions();
MemoryContextSwitchTo(oldcontext);
}
/* stuff done on every call of the function */
funcctx = SRF_PERCALL_SETUP();
call_cntr = funcctx->call_cntr;
max_calls = funcctx->max_calls;
attinmeta = funcctx->attinmeta;
if (call_cntr < max_calls) /* do when there is more left to send */
{
char* values[NUM_PG_SETTINGS_ATTS];
bool noshow = false;
HeapTuple tuple;
Datum result;
/*
* Get the next visible GUC variable name and value
*/
do {
GetConfigOptionByNum(call_cntr, (const char**)values, &noshow);
if (noshow) {
/* bump the counter and get the next config setting */
call_cntr = ++funcctx->call_cntr;
/* make sure we haven't gone too far now */
if (call_cntr >= max_calls)
SRF_RETURN_DONE(funcctx);
}
} while (noshow);
/* build a tuple */
tuple = BuildTupleFromCStrings(attinmeta, values);
/* make the tuple into a datum */
result = HeapTupleGetDatum(tuple);
SRF_RETURN_NEXT(funcctx, result);
} else {
/* do when there is no more left */
SRF_RETURN_DONE(funcctx);
}
}
static char* _ShowOption(struct config_generic* record, bool use_units)
{
char buffer[256];
const char* val = NULL;
int rc = 0;
switch (record->vartype) {
case PGC_BOOL: {
struct config_bool* conf = (struct config_bool*)record;
if (conf->show_hook)
val = (*conf->show_hook)();
else
val = *conf->variable ? "on" : "off";
} break;
case PGC_INT: {
struct config_int* conf = (struct config_int*)record;
if (conf->show_hook)
val = (*conf->show_hook)();
else {
/*
* Use int64 arithmetic to avoid overflows in units
* conversion.
*/
int64 result = *conf->variable;
const char* unit = NULL;
int flags = record->flags;
if (use_units && result > 0 && (record->flags & GUC_UNIT_MEMORY)) {
switch (flags & GUC_UNIT_MEMORY) {
case GUC_UNIT_BLOCKS:
result *= (double)BLCKSZ / 1024;
break;
case GUC_UNIT_XBLOCKS:
result *= (double)XLOG_BLCKSZ / 1024;
break;
default:
break;
}
if (result % KB_PER_GB == 0) {
result /= KB_PER_GB;
unit = "GB";
} else if (result % KB_PER_MB == 0) {
result /= KB_PER_MB;
unit = "MB";
} else {
unit = "kB";
}
} else if (use_units && result > 0 && (record->flags & GUC_UNIT_TIME)) {
switch (flags & GUC_UNIT_TIME) {
case GUC_UNIT_S:
result *= MS_PER_S;
break;
case GUC_UNIT_MIN:
result *= MS_PER_MIN;
break;
case GUC_UNIT_HOUR:
result *= MS_PER_H;
break;
case GUC_UNIT_DAY:
result *= MS_PER_D;
break;
default:
break;
}
if (result % MS_PER_D == 0) {
result /= MS_PER_D;
unit = "d";
} else if (result % MS_PER_H == 0) {
result /= MS_PER_H;
unit = "h";
} else if (result % MS_PER_MIN == 0) {
result /= MS_PER_MIN;
unit = "min";
} else if (result % MS_PER_S == 0) {
result /= MS_PER_S;
unit = "s";
} else {
unit = "ms";
}
} else
unit = "";
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, INT64_FORMAT "%s", result, unit);
securec_check_ss(rc, "\0", "\0");
val = buffer;
}
} break;
case PGC_INT64: {
struct config_int64* conf = (struct config_int64*)record;
if (conf->show_hook)
val = (*conf->show_hook)();
else {
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, INT64_FORMAT, *conf->variable);
securec_check_ss(rc, "\0", "\0");
val = buffer;
}
} break;
case PGC_REAL: {
struct config_real* conf = (struct config_real*)record;
if (conf->show_hook) {
val = (*conf->show_hook)();
} else {
double result = *conf->variable;
const char* unit = NULL;
int flags = record->flags;
if (use_units && result > 0 && (record->flags & GUC_UNIT_MEMORY)) {
switch (flags & GUC_UNIT_MEMORY) {
case GUC_UNIT_BLOCKS:
result *= (double)BLCKSZ / 1024;
break;
case GUC_UNIT_XBLOCKS:
result *= (double)XLOG_BLCKSZ / 1024;
break;
default:
break;
}
if (result / KB_PER_GB >= 1.0) {
result /= KB_PER_GB;
unit = "GB";
} else if (result / KB_PER_MB >= 1.0) {
result /= KB_PER_MB;
unit = "MB";
} else {
unit = "kB";
}
} else if (use_units && result > 0 && (record->flags & GUC_UNIT_TIME)) {
switch (flags & GUC_UNIT_TIME) {
case GUC_UNIT_S:
result *= MS_PER_S;
break;
case GUC_UNIT_MIN:
result *= MS_PER_MIN;
break;
case GUC_UNIT_HOUR:
result *= MS_PER_H;
break;
case GUC_UNIT_DAY:
result *= MS_PER_D;
break;
default:
break;
}
if (result / MS_PER_D >= 1.0) {
result /= MS_PER_D;
unit = "d";
} else if (result / MS_PER_H >= 1.0) {
result /= MS_PER_H;
unit = "h";
} else if (result / MS_PER_MIN >= 1.0) {
result /= MS_PER_MIN;
unit = "min";
} else if (result / MS_PER_S >= 1.0) {
result /= MS_PER_S;
unit = "s";
} else {
unit = "ms";
}
} else {
unit = "";
}
rc = snprintf_s(buffer, sizeof(buffer), sizeof(buffer) - 1, "%g%s", result, unit);
securec_check_ss(rc, "\0", "\0");
val = buffer;
}
} break;
case PGC_STRING: {
struct config_string* conf = (struct config_string*)record;
if (conf->show_hook)
val = (*conf->show_hook)();
else if (*conf->variable && **conf->variable)
val = *conf->variable;
else
val = "";
} break;
case PGC_ENUM: {
struct config_enum* conf = (struct config_enum*)record;
if (conf->show_hook)
val = (*conf->show_hook)();
else
val = config_enum_lookup_by_value(conf, *conf->variable);
} break;
default:
/* just to keep compiler quiet */
val = "???";
break;
}
return pstrdup(val);
}
#ifdef EXEC_BACKEND
inline static void write_fp(FILE* fp, config_generic* gconf, int elevel)
{
if (fwrite(&gconf->sourceline, 1, sizeof(gconf->sourceline), fp) != sizeof(gconf->sourceline)) {
ereport(elevel, (errcode(ERRCODE_FILE_WRITE_FAILED),
errmsg("write nondefault variables's sourceline failed")));
}
if (fwrite(&gconf->source, 1, sizeof(gconf->source), fp) != sizeof(gconf->source)) {
ereport(elevel, (errcode(ERRCODE_FILE_WRITE_FAILED),
errmsg("write nondefault variables's source failed")));
}
if (fwrite(&gconf->scontext, 1, sizeof(gconf->scontext), fp) != sizeof(gconf->scontext)) {
ereport(elevel, (errcode(ERRCODE_FILE_WRITE_FAILED),
errmsg("write nondefault variables's scontext failed")));
}
}
/*
* These routines dump out all non-default GUC options into a binary
* file that is read by all exec'ed backends. The format is:
*
* variable name, string, null terminated
* variable value, string, null terminated
* variable sourcefile, string, null terminated (empty if none)
* variable sourceline, integer
* variable source, integer
* variable scontext, integer
*/
static void write_one_nondefault_variable(FILE* fp, struct config_generic* gconf, int elevel)
{
if (gconf->source == PGC_S_DEFAULT)
return;
fprintf(fp, "%s", gconf->name);
fputc(0, fp);
switch (gconf->vartype) {
case PGC_BOOL: {
struct config_bool* conf = (struct config_bool*)gconf;
if (*conf->variable)
fprintf(fp, "true");
else
fprintf(fp, "false");
} break;
case PGC_INT: {
struct config_int* conf = (struct config_int*)gconf;
fprintf(fp, "%d", *conf->variable);
} break;
case PGC_INT64: {
struct config_int64* conf = (struct config_int64*)gconf;
fprintf(fp, INT64_FORMAT, *conf->variable);
} break;
case PGC_REAL: {
struct config_real* conf = (struct config_real*)gconf;
fprintf(fp, "%.17g", *conf->variable);
} break;
case PGC_STRING: {
struct config_string* conf = (struct config_string*)gconf;
fprintf(fp, "%s", *conf->variable);
} break;
case PGC_ENUM: {
struct config_enum* conf = (struct config_enum*)gconf;
fprintf(fp, "%s", config_enum_lookup_by_value(conf, *conf->variable));
} break;
default:
break;
}
fputc(0, fp);
if (gconf->sourcefile)
fprintf(fp, "%s", gconf->sourcefile);
fputc(0, fp);
write_fp(fp, gconf, elevel);
}
void write_nondefault_variables(GucContext context)
{
int elevel;
FILE* fp = NULL;
int i;
Assert(context == PGC_POSTMASTER || context == PGC_SIGHUP);
elevel = (context == PGC_SIGHUP) ? LOG : ERROR;
/*
* Open file
*/
fp = AllocateFile(CONFIG_EXEC_PARAMS_NEW, "w");
if (fp == NULL) {
ereport(
elevel, (errcode_for_file_access(), errmsg("could not write to file \"%s\": %m", CONFIG_EXEC_PARAMS_NEW)));
return;
}
for (i = 0; i < u_sess->num_guc_variables; i++) {
write_one_nondefault_variable(fp, u_sess->guc_variables[i], elevel);
}
/*
* make sure the content has been flush to disk.
* we need not check if fp == NULL, it has been check before.
*/
fflush(fp);
if (FreeFile(fp)) {
ereport(
elevel, (errcode_for_file_access(), errmsg("could not write to file \"%s\": %m", CONFIG_EXEC_PARAMS_NEW)));
return;
}
/*
* Put new file in place. This could delay on Win32, but we don't hold
* any exclusive locks.
*/
rename(CONFIG_EXEC_PARAMS_NEW, CONFIG_EXEC_PARAMS);
}
/*
* Read string, including null byte from file
*
* Return NULL on EOF and nothing read
*/
static char* read_string_with_null(FILE* fp)
{
int i = 0, ch, maxlen = 256;
char* str = NULL;
do {
if ((ch = fgetc(fp)) == EOF) {
if (i == 0)
return NULL;
else
ereport(FATAL, (errmsg("invalid format of exec config params file")));
}
if (i == 0)
str = (char*)guc_malloc(FATAL, maxlen);
else if (i == maxlen)
str = (char*)guc_realloc(FATAL, str, maxlen *= 2);
str[i++] = ch;
} while (ch != 0);
return str;
}
/*
* This routine loads a previous postmaster dump of its non-default
* settings.
*/
void read_nondefault_variables(void)
{
FILE* fp = NULL;
char *varname = NULL, *varvalue = NULL, *varsourcefile = NULL;
int varsourceline;
GucSource varsource;
GucContext varscontext;
int retry_times = 0;
do {
/*
* Open file
*/
fp = AllocateFile(CONFIG_EXEC_PARAMS, "r");
if (fp == NULL) {
retry_times++;
}
} while (fp == NULL && retry_times <= 1000);
if (fp == NULL) {
ereport(FATAL, (errcode_for_file_access(), errmsg("could not read from file \"%s\": %m", CONFIG_EXEC_PARAMS)));
return;
}
for (;;) {
struct config_generic* record = NULL;
if ((varname = read_string_with_null(fp)) == NULL)
break;
if ((record = find_option(varname, true, FATAL)) == NULL)
ereport(FATAL, (errmsg("failed to locate variable \"%s\" in exec config params file", varname)));
if ((varvalue = read_string_with_null(fp)) == NULL)
ereport(FATAL, (errmsg("invalid format of exec config params file")));
if ((varsourcefile = read_string_with_null(fp)) == NULL)
ereport(FATAL, (errmsg("invalid format of exec config params file")));
if (fread(&varsourceline, 1, sizeof(varsourceline), fp) != sizeof(varsourceline))
ereport(FATAL, (errmsg("invalid format of exec config params file")));
if (fread(&varsource, 1, sizeof(varsource), fp) != sizeof(varsource))
ereport(FATAL, (errmsg("invalid format of exec config params file")));
if (fread(&varscontext, 1, sizeof(varscontext), fp) != sizeof(varscontext))
ereport(FATAL, (errmsg("invalid format of exec config params file")));
(void)set_config_option(varname, varvalue, varscontext, varsource, GUC_ACTION_SET, true, 0, true);
if (varsourcefile[0])
set_config_sourcefile(varname, varsourcefile, varsourceline);
pfree(varname);
pfree(varvalue);
pfree(varsourcefile);
}
FreeFile(fp);
// shared_buffers is 32MB for dummyStandby
//
if (dummyStandbyMode)
g_instance.attr.attr_storage.NBuffers = (int)(32 * 1024 * 1024 / BLCKSZ);
}
#endif /* EXEC_BACKEND */
/*
* A little "long argument" simulation, although not quite GNU
* compliant. Takes a string of the form "some-option=some value" and
* returns name = "some_option" and value = "some value" in malloc'ed
* storage. Note that '-' is converted to '_' in the option name. If
* there is no '=' in the input string then value will be NULL.
*/
void ParseLongOption(const char* string, char** name, char** value)
{
size_t equal_pos;
char* cp = NULL;
AssertArg(string);
AssertArg(name);
AssertArg(value);
equal_pos = strcspn(string, "=");
if (string[equal_pos] == '=') {
*name = (char*)guc_malloc(FATAL, equal_pos + 1);
errno_t rc = strncpy_s(*name, equal_pos + 1, string, equal_pos);
securec_check_ss(rc, "\0", "\0");
*value = guc_strdup(FATAL, &string[equal_pos + 1]);
} else {
/* no equal sign in string */
*name = guc_strdup(FATAL, string);
*value = NULL;
}
for (cp = *name; *cp; cp++)
if (*cp == '-')
*cp = '_';
}
/*
* Handle options fetched from pg_db_role_setting.setconfig,
* pg_proc.proconfig, etc. Caller must specify proper context/source/action.
*
* The array parameter must be an array of TEXT (it must not be NULL).
*/
void ProcessGUCArray(ArrayType* array, GucContext context, GucSource source, GucAction action)
{
int i;
Assert(array != NULL);
Assert(ARR_ELEMTYPE(array) == TEXTOID);
Assert(ARR_NDIM(array) == 1);
Assert(ARR_LBOUND(array)[0] == 1);
for (i = 1; i <= ARR_DIMS(array)[0]; i++) {
Datum d;
bool isnull = false;
char* s = NULL;
char* name = NULL;
char* value = NULL;
d = array_ref(array,
1,
&i,
-1 /* varlenarray */,
-1 /* TEXT's typlen */,
false /* TEXT's typbyval */,
'i' /* TEXT's typalign */,
&isnull);
if (isnull != false)
continue;
s = TextDatumGetCString(d);
ParseLongOption(s, &name, &value);
if (value == NULL) {
ereport(
WARNING, (errcode(ERRCODE_SYNTAX_ERROR), errmsg("could not parse setting for parameter \"%s\"", name)));
pfree(name);
continue;
}
(void)set_config_option(name, value, context, source, action, true, 0);
pfree(name);
if (value != NULL)
selfpfree(value);
pfree(s);
}
}
/*
* Add an entry to an option array. The array parameter may be NULL
* to indicate the current table entry is NULL.
*/
ArrayType* GUCArrayAdd(ArrayType* array, const char* name, const char* value)
{
struct config_generic* record = NULL;
Datum datum;
char* newval = NULL;
ArrayType* a = NULL;
int rcs = 0;
Assert(name);
Assert(value);
/* test if the option is valid and we're allowed to set it */
(void)validate_option_array_item(name, value, false);
/* normalize name (converts obsolete GUC names to modern spellings) */
record = find_option(name, false, WARNING);
if (record != NULL)
name = record->name;
/* build new item for array */
newval = (char*)palloc(strlen(name) + 1 + strlen(value) + 1);
rcs = snprintf_s(
newval, strlen(name) + 1 + strlen(value) + 1, strlen(name) + 1 + strlen(value), "%s=%s", name, value);
securec_check_ss(rcs, "\0", "\0");
datum = CStringGetTextDatum(newval);
if (array != NULL) {
int index;
bool isnull = false;
int i;
Assert(ARR_ELEMTYPE(array) == TEXTOID);
Assert(ARR_NDIM(array) == 1);
Assert(ARR_LBOUND(array)[0] == 1);
index = ARR_DIMS(array)[0] + 1; /* add after end */
for (i = 1; i <= ARR_DIMS(array)[0]; i++) {
Datum d;
char* current = NULL;
d = array_ref(array,
1,
&i,
-1 /* varlenarray */,
-1 /* TEXT's typlen */,
false /* TEXT's typbyval */,
'i' /* TEXT's typalign */,
&isnull);
if (isnull)
continue;
current = TextDatumGetCString(d);
/* check for match up through and including '=' */
if (strncmp(current, newval, strlen(name) + 1) == 0) {
index = i;
break;
}
}
a = array_set(array,
1,
&index,
datum,
false,
-1 /* varlena array */,
-1 /* TEXT's typlen */,
false /* TEXT's typbyval */,
'i' /* TEXT's typalign */);
} else
a = construct_array(&datum, 1, TEXTOID, -1, false, 'i');
return a;
}
/*
* Delete an entry from an option array. The array parameter may be NULL
* to indicate the current table entry is NULL. Also, if the return value
* is NULL then a null should be stored.
*/
ArrayType* GUCArrayDelete(ArrayType* array, const char* name)
{
struct config_generic* record = NULL;
ArrayType* newarray = NULL;
int i;
int index;
Assert(name);
/* test if the option is valid and we're allowed to set it */
(void)validate_option_array_item(name, NULL, false);
/* normalize name (converts obsolete GUC names to modern spellings) */
record = find_option(name, false, WARNING);
if (record != NULL)
name = record->name;
/* if array is currently null, then surely nothing to delete */
if (array == NULL)
return NULL;
newarray = NULL;
index = 1;
for (i = 1; i <= ARR_DIMS(array)[0]; i++) {
Datum d;
char* val = NULL;
bool isnull = false;
d = array_ref(array,
1,
&i,
-1 /* varlenarray */,
-1 /* TEXT's typlen */,
false /* TEXT's typbyval */,
'i' /* TEXT's typalign */,
&isnull);
if (isnull)
continue;
val = TextDatumGetCString(d);
/* ignore entry if it's what we want to delete */
if (strncmp(val, name, strlen(name)) == 0 && val[strlen(name)] == '=')
continue;
/* else add it to the output array */
if (newarray != NULL)
newarray = array_set(newarray,
1,
&index,
d,
false,
-1 /* varlenarray */,
-1 /* TEXT's typlen */,
false /* TEXT's typbyval */,
'i' /* TEXT's typalign */);
else
newarray = construct_array(&d, 1, TEXTOID, -1, false, 'i');
index++;
}
return newarray;
}
/*
* Given a GUC array, delete all settings from it that our permission
* level allows: if superuser, delete them all; if regular user, only
* those that are PGC_USERSET
*/
ArrayType* GUCArrayReset(ArrayType* array)
{
ArrayType* newarray = NULL;
int i;
int index;
/* if array is currently null, nothing to do */
if (array == NULL)
return NULL;
/* if we're superuser, we can delete everything, so just do it */
if ((superuser() || (isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)))
return NULL;
for (i = 1, index = 1; i <= ARR_DIMS(array)[0]; i++) {
Datum d;
char* val = NULL;
char* eqsgn = NULL;
bool isnull = false;
d = array_ref(array,
1,
&i,
-1 /* varlenarray */,
-1 /* TEXT's typlen */,
false /* TEXT's typbyval */,
'i' /* TEXT's typalign */,
&isnull);
if (isnull)
continue;
val = TextDatumGetCString(d);
eqsgn = strchr(val, '=');
if (eqsgn != NULL) {
*eqsgn = '\0';
}
/* skip if we have permission to delete it */
if (validate_option_array_item(val, NULL, true))
continue;
/* else add it to the output array */
if (newarray != NULL)
newarray = array_set(newarray,
1,
&index,
d,
false,
-1 /* varlenarray */,
-1 /* TEXT's typlen */,
false /* TEXT's typbyval */,
'i' /* TEXT's typalign */);
else
newarray = construct_array(&d, 1, TEXTOID, -1, false, 'i');
index++;
pfree(val);
}
return newarray;
}
/*
* Validate a proposed option setting for GUCArrayAdd/Delete/Reset.
*
* name is the option name. value is the proposed value for the Add case,
* or NULL for the Delete/Reset cases. If skipIfNoPermissions is true, it's
* not an error to have no permissions to set the option.
*
* Returns TRUE if OK, FALSE if skipIfNoPermissions is true and user does not
* have permission to change this option (all other error cases result in an
* error being thrown).
*/
static bool validate_option_array_item(const char* name, const char* value, bool skipIfNoPermissions)
{
struct config_generic* gconf = NULL;
/*
* There are three cases to consider:
*
* name is a known GUC variable. Check the value normally, check
* permissions normally (ie, allow if variable is USERSET, or if it's
* SUSET and user is superuser).
*
* name is not known, but exists or can be created as a placeholder (i.e.,
* it has a prefixed name). We allow this case if you're a superuser,
* otherwise not. Superusers are assumed to know what they're doing. We
* can't allow it for other users, because when the placeholder is
* resolved it might turn out to be a SUSET variable;
* define_custom_variable assumes we checked that.
*
* name is not known and can't be created as a placeholder. Throw error,
* unless skipIfNoPermissions is true, in which case return FALSE.
*/
gconf = find_option(name, true, WARNING);
if (gconf == NULL) {
/* not known, failed to make a placeholder */
if (skipIfNoPermissions)
return false;
ereport(
ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("unrecognized configuration parameter \"%s\"", name)));
}
if (gconf->flags & GUC_CUSTOM_PLACEHOLDER) {
/*
* We cannot do any meaningful check on the value, so only permissions
* are useful to check.
*/
if ((superuser() || (isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)))
return true;
if (skipIfNoPermissions)
return false;
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE), errmsg("permission denied to set parameter \"%s\"", name)));
}
/* manual permissions check so we can avoid an error being thrown */
if (gconf->context == PGC_USERSET)
/* ok */;
else if (gconf->context == PGC_SUSET && (superuser() ||
(isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)))
/* ok */;
else if (skipIfNoPermissions)
return false;
/* if a permissions error should be thrown, let set_config_option do it */
/* test for permissions and valid option value */
(void)set_config_option(name, value,
(superuser() || (isOperatoradmin(GetUserId()) && u_sess->attr.attr_security.operation_mode)) ?
PGC_SUSET : PGC_USERSET, PGC_S_TEST, GUC_ACTION_SET, false, 0);
return true;
}
/*
* Called by check_hooks that want to override the normal
* ERRCODE_INVALID_PARAMETER_VALUE SQLSTATE for check hook failures.
*
* Note that GUC_check_errmsg() etc are just macros that result in a direct
* assignment to the associated variables. That is ugly, but forced by the
* limitations of C's macro mechanisms.
*/
void GUC_check_errcode(int sqlerrcode)
{
u_sess->utils_cxt.GUC_check_errcode_value = sqlerrcode;
}
/*
* Convenience functions to manage calling a variable's check_hook.
* These mostly take care of the protocol for letting check hooks supply
* portions of the error report on failure.
*/
static bool call_bool_check_hook(struct config_bool* conf, bool* newval, void** extra, GucSource source, int elevel)
{
/* Quick success if no hook */
if (!conf->check_hook)
return true;
/* Reset variables that might be set by hook */
u_sess->utils_cxt.GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
u_sess->utils_cxt.GUC_check_errmsg_string = NULL;
u_sess->utils_cxt.GUC_check_errdetail_string = NULL;
u_sess->utils_cxt.GUC_check_errhint_string = NULL;
if (!(*conf->check_hook)(newval, extra, source)) {
ereport(elevel,
(errcode(u_sess->utils_cxt.GUC_check_errcode_value),
errmodule(MOD_GUC),
u_sess->utils_cxt.GUC_check_errmsg_string
? errmsg_internal("%s", u_sess->utils_cxt.GUC_check_errmsg_string)
: errmsg("invalid value for parameter \"%s\": %d", conf->gen.name, (int)*newval),
u_sess->utils_cxt.GUC_check_errdetail_string
? errdetail_internal("%s", u_sess->utils_cxt.GUC_check_errdetail_string)
: 0,
u_sess->utils_cxt.GUC_check_errhint_string ? errhint("%s", u_sess->utils_cxt.GUC_check_errhint_string)
: 0));
/* Flush any strings created in ErrorContext */
FlushErrorState();
return false;
}
return true;
}
static bool call_int_check_hook(struct config_int* conf, int* newval, void** extra, GucSource source, int elevel)
{
/* Quick success if no hook */
if (!conf->check_hook)
return true;
/* Reset variables that might be set by hook */
u_sess->utils_cxt.GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
u_sess->utils_cxt.GUC_check_errmsg_string = NULL;
u_sess->utils_cxt.GUC_check_errdetail_string = NULL;
u_sess->utils_cxt.GUC_check_errhint_string = NULL;
if (!(*conf->check_hook)(newval, extra, source)) {
ereport(elevel,
(errcode(u_sess->utils_cxt.GUC_check_errcode_value),
errmodule(MOD_GUC),
u_sess->utils_cxt.GUC_check_errmsg_string
? errmsg_internal("%s", u_sess->utils_cxt.GUC_check_errmsg_string)
: errmsg("invalid value for parameter \"%s\": %d", conf->gen.name, *newval),
u_sess->utils_cxt.GUC_check_errdetail_string
? errdetail_internal("%s", u_sess->utils_cxt.GUC_check_errdetail_string)
: 0,
u_sess->utils_cxt.GUC_check_errhint_string ? errhint("%s", u_sess->utils_cxt.GUC_check_errhint_string)
: 0));
/* Flush any strings created in ErrorContext */
FlushErrorState();
return false;
}
return true;
}
static bool call_int64_check_hook(struct config_int64* conf, int64* newval, void** extra, GucSource source, int elevel)
{
/* Quick success if no hook */
if (!conf->check_hook)
return true;
/* Reset variables that might be set by hook */
u_sess->utils_cxt.GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
u_sess->utils_cxt.GUC_check_errmsg_string = NULL;
u_sess->utils_cxt.GUC_check_errdetail_string = NULL;
u_sess->utils_cxt.GUC_check_errhint_string = NULL;
if (!(*conf->check_hook)(newval, extra, source)) {
ereport(elevel,
(errcode(u_sess->utils_cxt.GUC_check_errcode_value),
u_sess->utils_cxt.GUC_check_errmsg_string
? errmsg_internal("%s", u_sess->utils_cxt.GUC_check_errmsg_string)
: errmsg("invalid value for parameter \"%s\": " INT64_FORMAT, conf->gen.name, *newval),
u_sess->utils_cxt.GUC_check_errdetail_string
? errdetail_internal("%s", u_sess->utils_cxt.GUC_check_errdetail_string)
: 0,
u_sess->utils_cxt.GUC_check_errhint_string ? errhint("%s", u_sess->utils_cxt.GUC_check_errhint_string)
: 0));
/* Flush any strings created in ErrorContext */
FlushErrorState();
return false;
}
return true;
}
static bool call_real_check_hook(struct config_real* conf, double* newval, void** extra, GucSource source, int elevel)
{
/* Quick success if no hook */
if (!conf->check_hook)
return true;
/* Reset variables that might be set by hook */
u_sess->utils_cxt.GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
u_sess->utils_cxt.GUC_check_errmsg_string = NULL;
u_sess->utils_cxt.GUC_check_errdetail_string = NULL;
u_sess->utils_cxt.GUC_check_errhint_string = NULL;
if (!(*conf->check_hook)(newval, extra, source)) {
ereport(elevel,
(errcode(u_sess->utils_cxt.GUC_check_errcode_value),
errmodule(MOD_GUC),
u_sess->utils_cxt.GUC_check_errmsg_string
? errmsg_internal("%s", u_sess->utils_cxt.GUC_check_errmsg_string)
: errmsg("invalid value for parameter \"%s\": %g", conf->gen.name, *newval),
u_sess->utils_cxt.GUC_check_errdetail_string
? errdetail_internal("%s", u_sess->utils_cxt.GUC_check_errdetail_string)
: 0,
u_sess->utils_cxt.GUC_check_errhint_string ? errhint("%s", u_sess->utils_cxt.GUC_check_errhint_string)
: 0));
/* Flush any strings created in ErrorContext */
FlushErrorState();
return false;
}
return true;
}
static bool call_string_check_hook(
struct config_string* conf, char** newval, void** extra, GucSource source, int elevel)
{
/* Quick success if no hook */
if (!conf->check_hook)
return true;
/* Reset variables that might be set by hook */
u_sess->utils_cxt.GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
u_sess->utils_cxt.GUC_check_errmsg_string = NULL;
u_sess->utils_cxt.GUC_check_errdetail_string = NULL;
u_sess->utils_cxt.GUC_check_errhint_string = NULL;
if (!(*conf->check_hook)(newval, extra, source)) {
ereport(elevel,
(errcode(u_sess->utils_cxt.GUC_check_errcode_value),
errmodule(MOD_GUC),
u_sess->utils_cxt.GUC_check_errmsg_string
? errmsg_internal("%s", u_sess->utils_cxt.GUC_check_errmsg_string)
: errmsg("invalid value for parameter \"%s\": \"%s\"", conf->gen.name, *newval ? *newval : ""),
u_sess->utils_cxt.GUC_check_errdetail_string
? errdetail_internal("%s", u_sess->utils_cxt.GUC_check_errdetail_string)
: 0,
u_sess->utils_cxt.GUC_check_errhint_string ? errhint("%s", u_sess->utils_cxt.GUC_check_errhint_string)
: 0));
/* Flush any strings created in ErrorContext */
FlushErrorState();
return false;
}
return true;
}
static bool call_enum_check_hook(struct config_enum* conf, int* newval, void** extra, GucSource source, int elevel)
{
/* Quick success if no hook */
if (!conf->check_hook)
return true;
/* Reset variables that might be set by hook */
u_sess->utils_cxt.GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
u_sess->utils_cxt.GUC_check_errmsg_string = NULL;
u_sess->utils_cxt.GUC_check_errdetail_string = NULL;
u_sess->utils_cxt.GUC_check_errhint_string = NULL;
if (!(*conf->check_hook)(newval, extra, source)) {
ereport(elevel,
(errcode(u_sess->utils_cxt.GUC_check_errcode_value),
errmodule(MOD_GUC),
u_sess->utils_cxt.GUC_check_errmsg_string
? errmsg_internal("%s", u_sess->utils_cxt.GUC_check_errmsg_string)
: errmsg("invalid value for parameter \"%s\": \"%s\"",
conf->gen.name,
config_enum_lookup_by_value(conf, *newval)),
u_sess->utils_cxt.GUC_check_errdetail_string
? errdetail_internal("%s", u_sess->utils_cxt.GUC_check_errdetail_string)
: 0,
u_sess->utils_cxt.GUC_check_errhint_string ? errhint("%s", u_sess->utils_cxt.GUC_check_errhint_string)
: 0));
/* Flush any strings created in ErrorContext */
FlushErrorState();
return false;
}
return true;
}
/*
* check_hook, assign_hook and show_hook subroutines
*/
static bool check_log_destination(char** newval, void** extra, GucSource source)
{
char* rawstring = NULL;
List* elemlist = NIL;
ListCell* l = NULL;
unsigned int newlogdest = 0;
unsigned int* myextra = NULL;
/* Need a modifiable copy of string */
rawstring = pstrdup(*newval);
/* Parse string into list of identifiers */
if (!SplitIdentifierString(rawstring, ',', &elemlist)) {
/* syntax error in list */
GUC_check_errdetail("List syntax is invalid.");
pfree(rawstring);
list_free(elemlist);
return false;
}
foreach (l, elemlist) {
char* tok = (char*)lfirst(l);
if (pg_strcasecmp(tok, "stderr") == 0)
newlogdest |= LOG_DESTINATION_STDERR;
else if (pg_strcasecmp(tok, "csvlog") == 0)
newlogdest |= LOG_DESTINATION_CSVLOG;
#ifdef HAVE_SYSLOG
else if (pg_strcasecmp(tok, "syslog") == 0)
newlogdest |= LOG_DESTINATION_SYSLOG;
#endif
#ifdef WIN32
else if (pg_strcasecmp(tok, "eventlog") == 0)
newlogdest |= LOG_DESTINATION_EVENTLOG;
#endif
else {
GUC_check_errdetail("Unrecognized key word: \"%s\".", tok);
pfree(rawstring);
list_free(elemlist);
return false;
}
}
pfree(rawstring);
list_free(elemlist);
myextra = (unsigned int*)guc_malloc(ERROR, sizeof(unsigned int));
*myextra = newlogdest;
*extra = (void*)myextra;
return true;
}
static void assign_log_destination(const char* newval, void* extra)
{
t_thrd.log_cxt.Log_destination = *((int*)extra);
}
static void assign_syslog_facility(int newval, void* extra)
{
#ifdef HAVE_SYSLOG
set_syslog_parameters(
u_sess->attr.attr_common.syslog_ident_str ? u_sess->attr.attr_common.syslog_ident_str : "postgres", newval);
#endif
/* Without syslog support, just ignore it */
}
static void assign_syslog_ident(const char* newval, void* extra)
{
#ifdef HAVE_SYSLOG
set_syslog_parameters(newval, u_sess->attr.attr_common.syslog_facility);
#endif
/* Without syslog support, it will always be set to "none", so ignore */
}
static void assign_session_replication_role(int newval, void* extra)
{
/*
* Must flush the plan cache when changing replication role; but don't
* flush unnecessarily.
*/
if (u_sess->attr.attr_common.SessionReplicationRole != newval)
ResetPlanCache();
}
static bool check_client_min_messages(int* newval, void** extra, GucSource source)
{
/*
* We disallow setting client_min_messages above ERROR, because not
* sending an ErrorResponse message for an error breaks the FE/BE
* protocol. However, for backwards compatibility, we still accept FATAL
* or PANIC as input values, and then adjust here.
*/
if (*newval > ERROR)
*newval = ERROR;
return true;
}
static bool check_debug_assertions(bool* newval, void** extra, GucSource source)
{
#ifndef USE_ASSERT_CHECKING
if (*newval) {
GUC_check_errmsg("assertion checking is not supported by this build");
return false;
}
#endif
return true;
}
#ifdef USE_BONJOUR
static bool check_bonjour(bool* newval, void** extra, GucSource source)
{
// if not supported bonjour, must report error
if (*newval) {
GUC_check_errmsg("Bonjour is not supported by this build");
return false;
}
return true;
}
#endif
static bool check_gpc_syscache_threshold(bool* newval, void** extra, GucSource source)
{
if (*newval) {
/* in case local_syscache_threshold is too low cause gpc does not take effect, we set local_syscache_threshold
at least 16MB if gpc is on. */
if (g_instance.attr.attr_memory.local_syscache_threshold < 16 * 1024) {
ereport(WARNING, (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("set local_syscache_threshold from %dMB to 16MB in case gpc is on but not valid.",
g_instance.attr.attr_memory.local_syscache_threshold / 1024)));
g_instance.attr.attr_memory.local_syscache_threshold = 16 * 1024;
}
}
return true;
}
static bool check_stage_log_stats(bool* newval, void** extra, GucSource source)
{
if (*newval && u_sess->attr.attr_common.log_statement_stats) {
GUC_check_errdetail("Cannot enable parameter when \"log_statement_stats\" is true.");
return false;
}
return true;
}
static bool check_log_stats(bool* newval, void** extra, GucSource source)
{
if (*newval && (u_sess->attr.attr_common.log_parser_stats || u_sess->attr.attr_common.log_planner_stats ||
u_sess->attr.attr_common.log_executor_stats)) {
GUC_check_errdetail("Cannot enable \"log_statement_stats\" when "
"\"log_parser_stats\", \"log_planner_stats\", "
"or \"log_executor_stats\" is true.");
return false;
}
return true;
}
/*
* Only a warning is printed to log.
* Returning false will cause FATAL error and it will not be good.
*/
static bool check_pgxc_maintenance_mode(bool* newval, void** extra, GucSource source)
{
switch (source) {
case PGC_S_DYNAMIC_DEFAULT:
case PGC_S_ENV_VAR:
case PGC_S_ARGV:
GUC_check_errmsg("pgxc_maintenance_mode is not allowed here.");
return false;
case PGC_S_FILE:
ereport(WARNING,
(errmsg("pgxc_maintenance_mode is not allowed in postgresql.conf. Set to default (false).")));
*newval = false;
return true;
case PGC_S_DATABASE:
case PGC_S_USER:
case PGC_S_DATABASE_USER:
case PGC_S_INTERACTIVE:
case PGC_S_TEST:
ereport(WARNING, (errmsg("pgxc_maintenance_mode is not allowed here. Set to default (false).")));
*newval = false;
return true;
case PGC_S_DEFAULT:
case PGC_S_CLIENT:
case PGC_S_SESSION:
return true;
default:
GUC_check_errmsg("Unknown source");
return false;
}
}
bool check_canonical_path(char** newval, void** extra, GucSource source)
{
/*
* Since canonicalize_path never enlarges the string, we can just modify
* newval in-place. But watch out for NULL, which is the default value
* for external_pid_file.
*/
if (*newval)
canonicalize_path(*newval);
return true;
}
bool check_directory(char** newval, void** extra, GucSource source)
{
if (*newval != NULL) {
if (strlen(*newval) == 0) {
ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid value for GUC parameter of directory type.")));
} else {
canonicalize_path(*newval);
}
}
return true;
}
static bool check_log_filename(char** newval, void** extra, GucSource source)
{
if (*newval == NULL || strlen(*newval) == 0) {
ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid parameter value for 'log_filename'.")));
} else {
check_canonical_path(newval, extra, source);
}
return true;
}
static bool check_perf_filename(char** newval)
{
char* tmp_string = NULL;
int len = 0;
tmp_string = pstrdup(*newval);
bool result = false;
len = strlen(tmp_string);
if (len > 4 && strcmp(tmp_string + len - 4, ".csv") == 0)
result = true;
else
ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("explain_dna_file should be .csv file.")));
pfree(tmp_string);
u_sess->attr.attr_sql.guc_explain_perf_mode = EXPLAIN_RUN;
return result;
}
static bool check_perf_log(char** newval, void** extra, GucSource source)
{
bool result = false;
if (*newval == NULL)
return true;
if (is_absolute_path(*newval) == false)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("explain_dna_file should be absolute path + .csv file.")));
result = check_canonical_path(newval, extra, source);
if (result)
return check_perf_filename(newval);
else
return false;
}
static bool check_timezone_abbreviations(char** newval, void** extra, GucSource source)
{
/*
* The boot_val given above for timezone_abbreviations is NULL. When we
* see this we just do nothing. If this value isn't overridden from the
* config file then pg_timezone_abbrev_initialize() will eventually
* replace it with "Default". This hack has two purposes: to avoid
* wasting cycles loading values that might soon be overridden from the
* config file, and to avoid trying to read the timezone abbrev files
* during InitializeGUCOptions(). The latter doesn't work in an
* EXEC_BACKEND subprocess because my_exec_path hasn't been set yet and so
* we can't locate PGSHAREDIR.
*/
if (*newval == NULL) {
Assert(source == PGC_S_DEFAULT);
return true;
}
/* OK, load the file and produce a malloc'd TimeZoneAbbrevTable */
*extra = load_tzoffsets(*newval);
/* tzparser.c returns NULL on failure, reporting via GUC_check_errmsg */
if (!*extra)
return false;
return true;
}
static void assign_thread_working_version_num(int newval, void* extra)
{
if (newval > 0) {
gs_set_working_version_num(newval);
}
return;
}
#ifdef LIBCOMM_SPEED_TEST_ENABLE
static void assign_comm_test_thread_num(int newval, void* extra)
{
gs_set_test_thread_num(newval);
return;
}
static void assign_comm_test_msg_len(int newval, void* extra)
{
gs_set_test_msg_len(newval);
return;
}
static void assign_comm_test_send_sleep(int newval, void* extra)
{
gs_set_test_send_sleep(newval);
return;
}
static void assign_comm_test_send_once(int newval, void* extra)
{
gs_set_test_send_once(newval);
return;
}
static void assign_comm_test_recv_sleep(int newval, void* extra)
{
gs_set_test_recv_sleep(newval);
return;
}
static void assign_comm_test_recv_once(int newval, void* extra)
{
gs_set_test_recv_once(newval);
return;
}
#endif
#ifdef LIBCOMM_FAULT_INJECTION_ENABLE
static void assign_comm_fault_injection(int newval, void* extra)
{
gs_set_fault_injection(newval);
return;
}
#endif
static void assign_timezone_abbreviations(const char* newval, void* extra)
{
/* Do nothing for the boot_val default of NULL */
if (extra == NULL)
return;
InstallTimeZoneAbbrevs((TimeZoneAbbrevTable*)extra);
}
/*
* pg_timezone_abbrev_initialize --- set default value if not done already
*
* This is called after initial loading of postgresql.conf. If no
* timezone_abbreviations setting was found therein, select default.
* If a non-default value is already installed, nothing will happen.
*
* This can also be called from ProcessConfigFile to establish the default
* value after a postgresql.conf entry for it is removed.
*/
static void pg_timezone_abbrev_initialize(void)
{
SetConfigOption("timezone_abbreviations", "Default", PGC_POSTMASTER, PGC_S_DYNAMIC_DEFAULT);
}
static void assign_tcp_keepalives_idle(int newval, void *extra)
{
/*
* The kernel API provides no way to test a value without setting it; and
* once we set it we might fail to unset it. So there seems little point
* in fully implementing the check-then-assign GUC API for these
* variables. Instead we just do the assignment on demand. pqcomm.c
* reports any problems via ereport(LOG).
*
* This approach means that the GUC value might have little to do with the
* actual kernel value, so we use a show_hook that retrieves the kernel
* value rather than trusting GUC's copy.
*/
(void) pq_setkeepalivesidle(newval, u_sess->proc_cxt.MyProcPort);
}
static const char* show_tcp_keepalives_idle(void)
{
/* See comments in assign_tcp_keepalives_idle */
const int maxBufLen = 16;
static char nbuf[maxBufLen];
errno_t rc = snprintf_s(nbuf, maxBufLen, maxBufLen - 1, "%d", pq_getkeepalivesidle(u_sess->proc_cxt.MyProcPort));
securec_check_ss(rc, "\0", "\0");
return nbuf;
}
static void assign_tcp_keepalives_interval(int newval, void *extra)
{
/* See comments in assign_tcp_keepalives_idle */
(void) pq_setkeepalivesinterval(newval, u_sess->proc_cxt.MyProcPort);
}
static const char* show_tcp_keepalives_interval(void)
{
/* See comments in assign_tcp_keepalives_idle */
const int maxBufLen = 16;
static char nbuf[maxBufLen];
errno_t rc = snprintf_s(nbuf, maxBufLen, maxBufLen - 1, "%d",
pq_getkeepalivesinterval(u_sess->proc_cxt.MyProcPort));
securec_check_ss(rc, "\0", "\0");
return nbuf;
}
static void assign_tcp_keepalives_count(int newval, void *extra)
{
/* See comments in assign_tcp_keepalives_idle */
(void) pq_setkeepalivescount(newval, u_sess->proc_cxt.MyProcPort);
}
static const char* show_tcp_keepalives_count(void)
{
/* See comments in assign_tcp_keepalives_idle */
const int maxBufLen = 16;
static char nbuf[maxBufLen];
errno_t rc = snprintf_s(nbuf, maxBufLen, maxBufLen - 1, "%d", pq_getkeepalivescount(u_sess->proc_cxt.MyProcPort));
securec_check_ss(rc, "\0", "\0");
return nbuf;
}
static bool check_effective_io_concurrency(int* newval, void** extra, GucSource source)
{
#ifdef USE_PREFETCH
double new_prefetch_pages = 0.0;
int i;
/* ----------
* The user-visible GUC parameter is the number of drives (spindles),
* which we need to translate to a number-of-pages-to-prefetch target.
* The target value is stashed in *extra and then assigned to the actual
* variable by assign_effective_io_concurrency.
*
* The expected number of prefetch pages needed to keep N drives busy is:
*
* drives | I/O requests
* -------+----------------
* 1 | 1
* 2 | 2/1 + 2/2 = 3
* 3 | 3/1 + 3/2 + 3/3 = 5 1/2
* 4 | 4/1 + 4/2 + 4/3 + 4/4 = 8 1/3
* n | n * H(n)
*
* This is called the "coupon collector problem" and H(n) is called the
* harmonic series. This could be approximated by n * ln(n), but for
* reasonable numbers of drives we might as well just compute the series.
*
* Alternatively we could set the target to the number of pages necessary
* so that the expected number of active spindles is some arbitrary
* percentage of the total. This sounds the same but is actually slightly
* different. The result ends up being ln(1-P)/ln((n-1)/n) where P is
* that desired fraction.
*
* Experimental results show that both of these formulas aren't aggressive
* enough, but we don't really have any better proposals.
*
* Note that if *newval = 0 (disabled), we must set target = 0.
* ----------
*/
for (i = 1; i <= *newval; i++)
new_prefetch_pages += (double)*newval / (double)i;
/* This range check shouldn't fail, but let's be paranoid */
if (new_prefetch_pages >= 0.0 && new_prefetch_pages < (double)INT_MAX) {
int* myextra = (int*)guc_malloc(ERROR, sizeof(int));
*myextra = (int)rint(new_prefetch_pages);
*extra = (void*)myextra;
return true;
} else
return false;
#else
return true;
#endif /* USE_PREFETCH */
}
static void assign_effective_io_concurrency(int newval, void* extra)
{
#ifdef USE_PREFETCH
u_sess->storage_cxt.target_prefetch_pages = *((int*)extra);
#endif /* USE_PREFETCH */
}
static void assign_pgstat_temp_directory(const char* newval, void* extra)
{
/* check_canonical_path already canonicalized newval for us */
char* tname = NULL;
char* fname = NULL;
int rcs = 0;
tname = (char*)guc_malloc(ERROR, strlen(newval) + 12); /* /pgstat.tmp */
rcs = snprintf_s(tname, strlen(newval) + 12, strlen(newval) + 11, "%s/pgstat.tmp", newval);
securec_check_ss(rcs, "\0", "\0");
fname = (char*)guc_malloc(ERROR, strlen(newval) + 13); /* /pgstat.stat */
rcs = snprintf_s(fname, strlen(newval) + 13, strlen(newval) + 12, "%s/pgstat.stat", newval);
securec_check_ss(rcs, "\0", "\0");
if (u_sess->stat_cxt.pgstat_stat_tmpname)
pfree(u_sess->stat_cxt.pgstat_stat_tmpname);
u_sess->stat_cxt.pgstat_stat_tmpname = tname;
if (u_sess->stat_cxt.pgstat_stat_filename)
pfree(u_sess->stat_cxt.pgstat_stat_filename);
u_sess->stat_cxt.pgstat_stat_filename = fname;
}
static bool check_application_name(char** newval, void** extra, GucSource source)
{
/* Only allow clean ASCII chars in the application name */
char* p = NULL;
for (p = *newval; *p; p++) {
if (*p < 32 || *p > 126)
*p = '?';
}
return true;
}
static void assign_application_name(const char* newval, void* extra)
{
/* Update the pg_stat_activity view */
pgstat_report_appname(newval);
#ifndef ENABLE_MULTIPLE_NODES
if (AmPostmasterProcess() && newval[0] != '\0' && g_instance.exec_cxt.global_application_name[0] == '\0') {
g_instance.exec_cxt.global_application_name = pstrdup(newval);
}
#endif
}
static const char* show_log_file_mode(void)
{
char* buf = t_thrd.buf_cxt.show_log_file_mode_buf;
int size = sizeof(t_thrd.buf_cxt.show_log_file_mode_buf);
int rcs = 0;
rcs = snprintf_s(buf, size, size - 1, "%04o", u_sess->attr.attr_common.Log_file_mode);
securec_check_ss(rcs, "\0", "\0");
return buf;
}
/*
* Brief : Check the value of double-type parameter for security
* Description :
* Notes :
*/
bool check_double_parameter(double* newval, void** extra, GucSource source)
{
if (*newval >= 0) {
return true;
} else {
return false;
}
}
/*
* Check permission for SET ROLE and SET SESSION AUTHORIZATION
*/
static void check_setrole_permission(const char* rolename, char* passwd, bool IsSetRole) {
HeapTuple roleTup = SearchSysCache1(AUTHNAME, PointerGetDatum(rolename));
if (!HeapTupleIsValid(roleTup)) {
str_reset(passwd);
if (IsSetRole) {
ereport(ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("Invalid username/password,set role denied.")));
} else {
ereport(ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("Invalid username/password,set session_authorization denied.")));
}
}
Oid roleid = HeapTupleGetOid(roleTup);
bool is_initialuser = ((Form_pg_authid)GETSTRUCT(roleTup))->rolsuper;
ReleaseSysCache(roleTup);
if (is_initialuser && GetUserId() != BOOTSTRAP_SUPERUSERID) {
str_reset(passwd);
if (IsSetRole) {
ereport(ERROR, (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("permission denied to set role \"%s\"", rolename)));
} else {
ereport(ERROR, (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("permission denied to set session authorization")));
}
}
if (IsSetRole) {
if (!is_member_of_role(GetSessionUserId(), roleid)) {
str_reset(passwd);
ereport(ERROR, (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("permission denied to set role \"%s\"", rolename)));
}
} else {
AssertState(OidIsValid(u_sess->misc_cxt.AuthenticatedUserId));
if (!t_thrd.xact_cxt.bInAbortTransaction && roleid != u_sess->misc_cxt.AuthenticatedUserId &&
!u_sess->misc_cxt.AuthenticatedUserIsSuperuser && !superuser()) {
str_reset(passwd);
ereport(ERROR, (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("permission denied to set session authorization")));
}
}
}
/*
* Brief : Verify the SET Role and Passwd
* Description : Both SET ROLE and SET ROLE PASSWORD are handled here
* Notes :
*/
static bool verify_setrole_passwd(const char* rolename, char* passwd, bool IsSetRole)
{
TupleDesc pg_authid_dsc;
HeapTuple tuple;
Datum authidPasswdDatum;
bool authidPasswdIsNull = false;
Relation pg_authid_rel;
char* rolepasswd = NULL;
bool isPwdEqual = true;
char encrypted_md5_password[MD5_PASSWD_LEN + 1] = {0};
char encrypted_sha256_password[SHA256_LENGTH + ENCRYPTED_STRING_LENGTH + 1] = {0};
char encrypted_sm3_password[SM3_LENGTH + ENCRYPTED_STRING_LENGTH + 1] = {0};
char encrypted_combined_password[MD5_PASSWD_LEN + SHA256_PASSWD_LEN + 1] = {0};
char salt[SALT_LENGTH * 2 + 1] = {0};
TimestampTz lastTryLoginTime;
Datum vbegin_datum;
Datum vuntil_datum;
TimestampTz vbegin = 0;
TimestampTz vuntil = 0;
bool vbegin_null = true;
bool vuntil_null = true;
Oid roleid;
int iteration_count = 0;
errno_t ss_rc = 0;
USER_STATUS rolestatus = UNLOCK_STATUS;
if (passwd == NULL) {
if (IsSetRole) {
ereport(ERROR, (errcode(ERRCODE_INVALID_NAME), errmsg("Invalid username/password,set role denied.")));
} else {
ereport(ERROR,
(errcode(ERRCODE_INVALID_NAME),
errmsg("Invalid username/password,set session_authorization denied.")));
}
}
/* AccessShareLock is enough for SELECT*/
pg_authid_rel = heap_open(AuthIdRelationId, AccessShareLock);
pg_authid_dsc = RelationGetDescr(pg_authid_rel);
tuple = SearchSysCache1(AUTHNAME, PointerGetDatum(rolename));
if (!HeapTupleIsValid(tuple)) {
str_reset(passwd);
if (IsSetRole) {
ereport(ERROR, (errcode(ERRCODE_UNDEFINED_OBJECT), errmsg("Invalid username/password,set role denied.")));
} else {
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("Invalid username/password,set session_authorization denied.")));
}
}
/* get the role password*/
authidPasswdDatum = heap_getattr(tuple, Anum_pg_authid_rolpassword, pg_authid_dsc, &authidPasswdIsNull);
/*
* In default, the role password could not be NULL, except we failed to
* get the attribute.
*/
if (authidPasswdIsNull == false && (void*)authidPasswdDatum != NULL) {
rolepasswd = TextDatumGetCString(authidPasswdDatum);
} else {
return false;
}
/*whether the passwd equal to the rolepasswd*/
if (!isPWDENCRYPTED(passwd)) {
if (isMD5(rolepasswd)) {
if (!pg_md5_encrypt(passwd, rolename, strlen(rolename), encrypted_md5_password)) {
str_reset(passwd);
str_reset(rolepasswd);
ereport(ERROR, (errcode(ERRCODE_INVALID_PASSWORD), errmsg("md5-password encryption failed")));
}
if (strncmp(rolepasswd, encrypted_md5_password, MD5_PASSWD_LEN + 1) != 0) {
isPwdEqual = false;
}
} else if (isSHA256(rolepasswd)) {
ss_rc = strncpy_s(salt, sizeof(salt), &rolepasswd[SHA256_LENGTH], sizeof(salt) - 1);
securec_check(ss_rc, "", "");
salt[sizeof(salt) - 1] = '\0';
iteration_count = decode_iteration(&rolepasswd[SHA256_PASSWD_LEN]);
if (!pg_sha256_encrypt(passwd, salt, strlen(salt), encrypted_sha256_password, NULL, iteration_count)) {
str_reset(passwd);
str_reset(rolepasswd);
ereport(ERROR, (errcode(ERRCODE_INVALID_PASSWORD), errmsg("sha256-password encryption failed")));
}
if (strncmp(rolepasswd, encrypted_sha256_password, ENCRYPTED_STRING_LENGTH + 1) != 0) {
isPwdEqual = false;
}
} else if (isSM3(rolepasswd)) {
ss_rc = strncpy_s(salt, sizeof(salt), &rolepasswd[SM3_LENGTH], sizeof(salt) - 1);
securec_check(ss_rc, "", "");
salt[sizeof(salt) - 1] = '\0';
iteration_count = decode_iteration(&rolepasswd[SM3_PASSWD_LEN]);
if (!GsSm3Encrypt(passwd, salt, strlen(salt), encrypted_sm3_password, NULL, iteration_count)) {
str_reset(passwd);
str_reset(rolepasswd);
ereport(ERROR, (errcode(ERRCODE_INVALID_PASSWORD), errmsg("sm3-password encryption failed")));
}
if (strncmp(rolepasswd, encrypted_sm3_password, ENCRYPTED_STRING_LENGTH + 1) != 0) {
isPwdEqual = false;
}
} else if (isCOMBINED(rolepasswd)) {
errno_t rc = EOK;
rc = strncpy_s(salt, sizeof(salt), &rolepasswd[SHA256_LENGTH], sizeof(salt) - 1);
securec_check(rc, "\0", "\0");
salt[sizeof(salt) - 1] = '\0';
iteration_count = decode_iteration(&rolepasswd[SHA256_PASSWD_LEN + MD5_PASSWD_LEN]);
if (!pg_sha256_encrypt(passwd, salt, strlen(salt), encrypted_sha256_password, NULL, iteration_count)) {
str_reset(passwd);
str_reset(rolepasswd);
ereport(ERROR, (errcode(ERRCODE_INVALID_PASSWORD), errmsg("first stage encryption password failed")));
}
if (!pg_md5_encrypt(passwd, rolename, strlen(rolename), encrypted_md5_password)) {
str_reset(passwd);
str_reset(rolepasswd);
ereport(ERROR, (errcode(ERRCODE_INVALID_PASSWORD), errmsg("second stage encryption password failed")));
}
rc = snprintf_s(encrypted_combined_password,
MD5_PASSWD_LEN + SHA256_PASSWD_LEN + 1,
MD5_PASSWD_LEN + SHA256_PASSWD_LEN,
"%s%s",
encrypted_sha256_password,
encrypted_md5_password);
securec_check_ss(rc, "\0", "\0");
if (strncmp(rolepasswd, encrypted_sha256_password, ENCRYPTED_STRING_LENGTH + 1) != 0) {
isPwdEqual = false;
}
} else {
str_reset(passwd);
str_reset(rolepasswd);
ereport(ERROR, (errcode(ERRCODE_INVALID_PASSWORD), errmsg("Invalid password stored")));
}
} else {
if (strcmp(passwd, rolepasswd) != 0) {
isPwdEqual = false;
} else {
ereport(NOTICE,
(errcode(ERRCODE_INVALID_PASSWORD), errmsg("Using encrypted password directly is not recommended.")));
}
}
lastTryLoginTime = GetCurrentTimestamp();
if (!TimestampDifferenceExceeds(u_sess->utils_cxt.lastFailedLoginTime, lastTryLoginTime, MS_PER_S * 1)) {
str_reset(passwd);
str_reset(rolepasswd);
ereport(ERROR,
(errcode(ERRCODE_INVALID_OPERATION),
errmsg("you are not allowed to do that operation immediately, please try again later")));
}
/* get the roleid for check lock/unlock. */
roleid = GetRoleOid(rolename);
/* Check whether the role have been locked. */
if (!IsConnFromCoord()) {
if (t_thrd.postmaster_cxt.HaShmData->current_mode == STANDBY_MODE) {
rolestatus = GetAccountLockedStatusFromHashTable(roleid);
} else {
rolestatus = GetAccountLockedStatus(roleid);
}
if (rolestatus != UNLOCK_STATUS) {
bool unlocked = false;
if (t_thrd.postmaster_cxt.HaShmData->current_mode == STANDBY_MODE) {
unlocked = UnlockAccountToHashTable(roleid, false, false);
} else {
unlocked = TryUnlockAccount(roleid, false, false);
}
if (!unlocked) {
str_reset(passwd);
str_reset(rolepasswd);
ereport(ERROR, (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
errmsg("The account has been locked.")));
}
} else if (isPwdEqual == true) {
if (t_thrd.postmaster_cxt.HaShmData->current_mode == STANDBY_MODE) {
(void)UnlockAccountToHashTable(roleid, false, true);
} else {
(void)TryUnlockAccount(roleid, false, true);
}
}
/* Currently inner set statement from pooler don't check pwd. */
if (isPwdEqual == false) {
u_sess->utils_cxt.lastFailedLoginTime = GetCurrentTimestamp();
if (t_thrd.postmaster_cxt.HaShmData->current_mode == STANDBY_MODE) {
UpdateFailCountToHashTable(roleid, 1, false);
} else {
TryLockAccount(roleid, 1, false);
}
str_reset(passwd);
str_reset(rolepasswd);
if (IsSetRole) {
ereport(ERROR, (errcode(ERRCODE_INVALID_NAME), errmsg("Invalid username/password,set role denied.")));
} else {
ereport(ERROR, (errcode(ERRCODE_INVALID_NAME),
errmsg("Invalid username/password,set session_authorization denied.")));
}
}
}
/* whether within the validiity of period */
vbegin_datum = heap_getattr(tuple, Anum_pg_authid_rolvalidbegin, pg_authid_dsc, &vbegin_null);
if (!vbegin_null) {
vbegin = DatumGetTimestampTz(vbegin_datum);
}
vuntil_datum = heap_getattr(tuple, Anum_pg_authid_rolvaliduntil, pg_authid_dsc, &vuntil_null);
if (!vuntil_null) {
vuntil = DatumGetTimestampTz(vuntil_datum);
}
if ((!vbegin_null && vbegin > lastTryLoginTime) || (!vuntil_null && vuntil < lastTryLoginTime)) {
str_reset(passwd);
str_reset(rolepasswd);
ereport(ERROR,
(errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
errmsg("The account is not within the period of validity.")));
}
ReleaseSysCache(tuple);
heap_close(pg_authid_rel, NoLock);
str_reset(passwd);
str_reset(rolepasswd);
return true;
}
/*
* @@GaussDB@@
* Brief : Check one channel of the replconninfo.
* Description : If the format of the channel is right return true, else return false.
* Notes :
*/
bool CheckReplChannel(const char* ChannelInfo)
{
char* iter = NULL;
char* ReplStr = NULL;
if (NULL == ChannelInfo) {
return false;
} else {
ReplStr = pstrdup(ChannelInfo);
if (NULL == ReplStr) {
return false;
} else {
iter = strstr(ReplStr, "localhost");
if (NULL == iter) {
pfree(ReplStr);
return false;
}
iter += strlen("localhost");
while (' ' == *iter || '=' == *iter) {
iter++;
}
if ((!isdigit(*iter) && *iter != ':' && !isalpha(*iter)) ||
(0 == strncmp(iter, "localport", strlen("localport")))) {
pfree(ReplStr);
return false;
}
iter = strstr(ReplStr, "localport");
if (NULL == iter) {
pfree(ReplStr);
return false;
}
iter += strlen("localport");
while (' ' == *iter || '=' == *iter) {
iter++;
}
if (!isdigit(*iter)) {
pfree(ReplStr);
return false;
}
iter = strstr(ReplStr, "remotehost");
if (NULL == iter) {
pfree(ReplStr);
return false;
}
iter += strlen("remotehost");
while (' ' == *iter || '=' == *iter) {
iter++;
}
if ((!isdigit(*iter) && *iter != ':' && !isalpha(*iter)) ||
(0 == strncmp(iter, "remoteport", strlen("remoteport")))) {
pfree(ReplStr);
return false;
}
iter = strstr(ReplStr, "remoteport");
if (NULL == iter) {
pfree(ReplStr);
return false;
}
iter += strlen("remoteport");
while (' ' == *iter || '=' == *iter) {
iter++;
}
if (!isdigit(*iter)) {
pfree(ReplStr);
return false;
}
}
}
pfree(ReplStr);
return true;
}
/*
* @@GaussDB@@
* Brief : void * pg_malloc(size_t size)
* Description : malloc a space of size
* Notes :
*/
void* pg_malloc(size_t size)
{
void* result = NULL;
/* Avoid unportable behavior of malloc(0) */
if (size == 0) {
write_stderr(_("walreceiver malloc 0\n"));
gs_thread_exit(1);
}
#ifdef FRONTEND
result = malloc(size);
#else
result = MemoryContextAlloc(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB), size);
#endif
if (result == NULL) {
write_stderr(_("walreceiver out of memory\n"));
gs_thread_exit(1);
}
return result;
}
/*
* @@GaussDB@@
* Brief : char *xstrdup(const char *s)
* Description : copy string
* Notes :
*/
char* xstrdup(const char* s)
{
char* result = NULL;
#ifndef EXEC_BACKEND
result = strdup(s);
#else
result = MemoryContextStrdup(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB), s);
#endif
if (result == NULL) {
write_stderr(_("walreceiver out of memory\n"));
gs_thread_exit(1);
}
return result;
}
void release_opt_lines(char** opt_lines)
{
char** opt_line = NULL;
if (opt_lines == NULL)
return;
for (opt_line = opt_lines; *opt_line != NULL; opt_line++) {
selfpfree(*opt_line);
*opt_line = NULL;
}
selfpfree(opt_lines);
opt_lines = NULL;
return;
}
char** alloc_opt_lines(int opt_lines_num)
{
char** opt_lines = NULL;
int i = 0;
opt_lines = ((char**)pg_malloc(opt_lines_num * sizeof(char*)));
for (i = 0; i < opt_lines_num; i++) {
opt_lines[i] = NULL;
}
return opt_lines;
}
/*
* @@GaussDB@@
* Brief : static char ** read_guc_file(const char* path)
* Description : get the lines from a text file - return NULL if file can't be opened
* Notes :
*/
char** read_guc_file(const char* path)
{
FILE* infile = NULL;
int maxlength = 1, linelen = 0;
int nlines = 0;
char** result;
char* buffer = NULL;
int c;
const int limit_of_length = 100000; // limit of maxlength and nlines
if ((infile = fopen(path, "r+")) == NULL) {
(void)fprintf(stderr, _("could not open file for reading: %s\n"), gs_strerror(errno));
return NULL;
}
while ((c = fgetc(infile)) != EOF) { /* pass over the file twice - the first time to size the result */
linelen++;
if (c == '\n') {
nlines++;
if (linelen > maxlength)
maxlength = linelen;
linelen = 0;
}
}
/* handle last line without a terminating newline (yuck) */
if (linelen)
nlines++;
if (linelen > maxlength)
maxlength = linelen;
if (maxlength <= 1) {
fclose(infile);
infile = NULL;
return NULL;
}
if (maxlength > limit_of_length || nlines > limit_of_length) {
fclose(infile);
infile = NULL;
ereport(ERROR, (errcode(ERRCODE_CONFIG_FILE_ERROR), errmsg("Length of file or line is too long.")));
}
/* set up the result and the line buffer */
result = (char**)pg_malloc((nlines + 2) * sizeof(char*)); /* Reserve one extra for alter system set. */
buffer = (char*)pg_malloc(maxlength + 1);
/* now reprocess the file and store the lines */
rewind(infile);
nlines = 0;
while (fgets(buffer, maxlength + 1, infile) != NULL)
result[nlines++] = xstrdup(buffer);
(void)fclose(infile);
pfree(buffer);
result[nlines] = result[nlines + 1] = NULL;
return result;
}
/*
* @@GaussDB@@
* Brief : write_guc_file
* Description : write the config file
* Notes 1. free the lines outside. 2. truncate file before open:
*/
ErrCode write_guc_file(const char* path, char** lines)
{
FILE* out_file = NULL;
char** line = NULL;
ErrCode retcode = CODE_OK;
if ((out_file = fopen(path, "w")) == NULL) {
(void)fprintf(stderr, _("walreceiver could not open file \"%s\" for writing: %s\n"), path, gs_strerror(errno));
return CODE_OPEN_CONFFILE_FAILED;
}
for (line = lines; *line != NULL; line++) {
if (fputs(*line, out_file) < 0) {
retcode = CODE_WRITE_CONFFILE_ERROR;
break;
}
pfree(*line);
*line = NULL;
}
if (retcode == CODE_OK) {
if (fflush(out_file)) {
(void)fprintf(stderr, _("walreceiver flush file \"%s\" failed: %s\n"), path, gs_strerror(errno));
retcode = CODE_WRITE_CONFFILE_ERROR;
}
}
if (fclose(out_file)) {
(void)fprintf(stderr, _("walreceiver could not write file \"%s\": %s\n"), path, gs_strerror(errno));
retcode = CODE_CLOSE_CONFFILE_FAILED;
}
out_file = NULL;
return retcode;
}
/*
* @@GaussDB@@
* Brief : copy_guc_lines
* Description : copy and store the specified lines
* Notes :
*/
ErrCode copy_guc_lines(char** copy_to_line, char** optlines, const char** opt_name)
{
int optvalue_off = 0;
int optvalue_len = 0;
int opt_name_index = 0;
int i = 0;
int opt_name_len = 0;
int opt_num = 0;
if (optlines != NULL) {
for (i = 0; i < RESERVE_SIZE; i++) {
opt_name_index = find_guc_option(optlines, opt_name[i], NULL, NULL, &optvalue_off, &optvalue_len, false);
if (INVALID_LINES_IDX != opt_name_index) {
errno_t errorno = EOK;
opt_name_len = strlen(optlines[opt_name_index]) + 1;
if (opt_name_len > MAX_PARAM_LEN) {
ereport(LOG, (errmsg("guc '%s' is out of 1024", optlines[opt_name_index])));
return CODE_INTERNAL_ERROR;
}
copy_to_line[i] = (char*)pg_malloc(opt_name_len);
errorno = memset_s(copy_to_line[i], opt_name_len, 0, opt_name_len);
securec_check(errorno, "\0", "\0");
errorno = strncpy_s(copy_to_line[i], opt_name_len, optlines[opt_name_index], opt_name_len - 1);
securec_check(errorno, "\0", "\0");
opt_num++;
}
}
if (opt_num <= 0) {
ereport(LOG, (errmsg("the config file has no reserved parameters.")));
return CODE_INTERNAL_ERROR;
}
} else {
ereport(LOG, (errmsg("the config file is null")));
return CODE_INTERNAL_ERROR;
}
return CODE_OK;
}
/*
* @@GaussDB@@
* Brief : void modify_guc_one_line
* Description : modify one guc config
* Notes :
*/
void modify_guc_one_line(char*** guc_optlines, const char* opt_name, const char* copy_from_line)
{
int opt_name_index = 0;
int optvalue_off = 0;
int optvalue_len = 0;
char **optlines = *guc_optlines;
opt_name_index = find_guc_option(optlines, opt_name, NULL, NULL, &optvalue_off, &optvalue_len, false);
if (INVALID_LINES_IDX != opt_name_index) {
pfree(optlines[opt_name_index]);
} else {
int lines = 0;
/* get optlines row number */
for (lines = 0; optlines[lines] != NULL; ++lines) {}
/* add one line guc item, and set a end flag NULL. */
char **optlines_copy = (char**)pg_malloc((lines + 2) * sizeof(char*));
errno_t rc = memset_s(optlines_copy, (lines + 2) * sizeof(char*), 0, (lines + 2) * sizeof(char*));
securec_check(rc, "\0", "\0");
for (int cnt = 0; cnt < lines; cnt++) {
optlines_copy[cnt] = optlines[cnt];
}
pfree(optlines);
*guc_optlines = optlines_copy;
optlines = *guc_optlines;
optlines_copy = NULL;
Assert(optlines[lines] == NULL);
optlines[lines + 1] = NULL;
opt_name_index = lines;
}
int newsize = strlen(copy_from_line) + 1;
optlines[opt_name_index] = (char*)pg_malloc(newsize);
errno_t rc = strncpy_s(optlines[opt_name_index], newsize, copy_from_line, newsize - 1);
securec_check(rc, "\0", "\0");
if (newsize > MAX_PARAM_LEN) {
ereport(WARNING, (errmsg("modify_guc_one_line:opt len '%s' is out of 1024", optlines[opt_name_index])));
}
}
/*
* @@GaussDB@@
* Brief : static void modify_config_file
* Description : get the lines from a text file - return NULL if file can't be opened
* Notes :
*/
void modify_guc_lines(char*** guc_optlines, const char** opt_name, char** copy_from_line)
{
int opt_name_index = 0;
int optvalue_off = 0;
int optvalue_len = 0;
char **optlines = *guc_optlines;
if (optlines == NULL) {
ereport(LOG, (errmsg("configuration file has not data")));
} else {
for (int i = 0; i < RESERVE_SIZE; i++) {
opt_name_index = find_guc_option(optlines, opt_name[i], NULL, NULL, &optvalue_off, &optvalue_len, false);
if (NULL != copy_from_line[i]) {
if (INVALID_LINES_IDX != opt_name_index) {
pfree(optlines[opt_name_index]);
} else {
int lines = 0;
/* get optlines row number */
for (lines = 0; optlines[lines] != NULL; lines++) {}
/* add one line guc item, and set a end flag NULL. */
char **optlines_copy = (char**)pg_malloc((lines + 2) * sizeof(char*));
errno_t rc = memset_s(optlines_copy, (lines + 2) * sizeof(char*), 0, (lines + 2) * sizeof(char*));
securec_check(rc, "\0", "\0");
for (int cnt = 0; cnt < lines; cnt++) {
optlines_copy[cnt] = optlines[cnt];
}
pfree(optlines);
*guc_optlines = optlines_copy;
optlines = *guc_optlines;
optlines_copy = nullptr;
/* read_guc_file function set last tuple optlines[nlines] is NULL, NULL is the end flag of array. */
Assert(optlines[lines] == NULL);
optlines[lines + 1] = NULL;
opt_name_index = lines;
}
int newsize = strlen(copy_from_line[i]) + 1;
int real_newsize = Min(newsize, MAX_PARAM_LEN);
optlines[opt_name_index] = (char*)pg_malloc(newsize);
errno_t rc = strncpy_s(optlines[opt_name_index], real_newsize, copy_from_line[i], real_newsize - 1);
securec_check(rc, "\0", "\0");
if (newsize > MAX_PARAM_LEN) {
ereport(WARNING, (errmsg("guc '%s' is out of 1024", optlines[opt_name_index])));
}
}
}
}
}
/*
* @@GaussDB@@
* Brief : void delete_guc_lines
* Description : get the lines from a text file and comment lines which is chosen
* Notes :
*/
void comment_guc_lines(char** optlines, const char** opt_name)
{
int opt_name_index = 0;
int optvalue_off = 0;
int optvalue_len = 0;
if (optlines == NULL) {
ereport(LOG, (errmsg("configuration file has not data")));
} else {
for (int i = 0; i < RESERVE_SIZE; i++) {
opt_name_index = find_guc_option(optlines, opt_name[i], NULL, NULL, &optvalue_off, &optvalue_len, false);
if (opt_name_index != INVALID_LINES_IDX) {
/* Skip all the blanks at the begin of the optLine */
char *p = optlines[opt_name_index];
while (isspace((unsigned char)*p)) {
p++;
}
if (*p == '#') {
continue;
} else {
/* add '#' in the head of optlines[opt_name_index], newsize = copysize + 1 */
int copysize = strlen(optlines[opt_name_index]) + 1;
int newsize = copysize + 1;
int real_newsize = Min(newsize, MAX_PARAM_LEN);
errno_t rc = EOK;
char *optline_copy = (char *)pg_malloc(copysize);
rc = memset_s(optline_copy, copysize, 0, copysize);
securec_check(rc, "\0", "\0");
rc = strcpy_s(optline_copy, copysize, optlines[opt_name_index]);
securec_check(rc, "\0", "\0");
pfree(optlines[opt_name_index]);
optlines[opt_name_index] = (char*)pg_malloc(newsize);
rc = memset_s(optlines[opt_name_index], newsize, 0, newsize);
securec_check(rc, "\0", "\0");
optlines[opt_name_index][0] = '#';
rc = strncpy_s(optlines[opt_name_index] + 1, real_newsize -1, optline_copy, real_newsize - 2);
securec_check(rc, "\0", "\0");
pfree_ext(optline_copy);
if (newsize > MAX_PARAM_LEN) {
ereport(WARNING, (errmsg("guc '%s' is out of 1024", optlines[opt_name_index])));
}
}
}
}
}
}
/*
* @@GaussDB@@
* Brief : void add_guc_optlines_to_buffer
* Description : add guc file context optlines to buffer. return values is the length of buffer, including '\0'.
* Notes : WARNING: After using this function, remember to free the buffer.
*/
int add_guc_optlines_to_buffer(char** optlines, char** buffer)
{
int length = 0;
int i = 0;
char *buf = nullptr;
errno_t rc = EOK;
if (optlines == NULL) {
ereport(LOG, (errmsg("configuration file has not data")));
} else {
for (i = 0; optlines[i] != NULL; i++) {
length += strlen(optlines[i]);
}
buf = (char*) pg_malloc(length + 1);
rc = memset_s(buf, length + 1, 0, length + 1);
securec_check(rc, "\0", "\0");
for (i = 0; optlines[i] != NULL; i++) {
rc = strcat_s(buf, length + 1, optlines[i]);
securec_check(rc, "\0", "\0");
}
*buffer = buf;
}
return length + 1;
}
/*
* @@GaussDB@@
* Brief : find_guc_option
* Description : find the line info of the specified parameter in file
* Notes :
*/
int find_guc_option(char** optlines, const char* opt_name,
int* name_offset, int* name_len, int* value_offset, int* value_len, bool ignore_case)
{
bool isMatched = false;
int i = 0;
size_t paramlen = 0;
int targetline = 0;
int matchtimes = 0;
if (NULL == optlines || NULL == opt_name) {
return INVALID_LINES_IDX;
}
paramlen = (size_t)strnlen(opt_name, MAX_PARAM_LEN);
if (name_len != NULL) {
*name_len = (int)paramlen;
}
/* The first loop is to deal with the lines not commented by '#' */
for (i = 0; optlines[i] != NULL; i++) {
if (!isOptLineCommented(optlines[i])) {
isMatched = isMatchOptionName(optlines[i], opt_name, paramlen, name_offset,
value_len, value_offset, ignore_case);
if (isMatched) {
matchtimes++;
targetline = i;
}
}
}
/* The line of last one will be recorded when there are parameters with the same name in postgresql.conf */
if (matchtimes > 1) {
ereport(NOTICE, (errmsg("There are %d \"%s\" not commented in \"postgresql.conf\", and only the "
"last one in %dth line will be set and used.",
matchtimes, opt_name, (targetline + 1))));
}
if (matchtimes > 0) {
return targetline;
}
/* The second loop is to deal with the lines commented by '#' */
matchtimes = 0;
for (i = 0; optlines[i] != NULL; i++) {
if (isOptLineCommented(optlines[i])) {
isMatched = isMatchOptionName(optlines[i], opt_name, paramlen, name_offset,
value_len, value_offset, ignore_case);
if (isMatched) {
matchtimes++;
targetline = i;
}
}
}
/* The line of last one will be returned, otherwise it return invaild line */
return (matchtimes > 0) ? targetline : INVALID_LINES_IDX;
}
/*
* @@GaussDB@@
* Brief : genarate_temp_file
* Description : put the received data into temp file
* Notes :
*/
ErrCode generate_temp_file(char* buf, char* temppath, size_t size)
{
FILE* fp = NULL;
if ((fp = fopen(temppath, "w")) == NULL) {
ereport(LOG, (errmsg("could not open file \"%s\": %m", temppath)));
return CODE_OPEN_CONFFILE_FAILED;
}
if (fwrite((void*)buf, 1, size, fp) != size) {
ereport(LOG, (errmsg("could not write file \"%s\": %m", temppath)));
fclose(fp);
return CODE_WRITE_CONFFILE_ERROR;
}
if (fclose(fp)) {
ereport(LOG, (errmsg("could not close config file \"%s\": %m", temppath)));
return CODE_CLOSE_CONFFILE_FAILED;
}
return CODE_OK;
}
/*
* @@GaussDB@@
* Brief : copy_asyn_lines
* Description : copy and store the asynchronous lines
* Notes :
*/
ErrCode copy_asyn_lines(char* path, char** copy_to_line, const char** opt_name)
{
char** opt_lines = NULL;
ErrCode retcode = CODE_OK;
opt_lines = read_guc_file(path);
if (opt_lines == NULL) {
ereport(LOG, (errmsg("the config file has no data,please check it.")));
retcode = CODE_INTERNAL_ERROR;
} else {
retcode = copy_guc_lines(copy_to_line, opt_lines, opt_name);
if (retcode != CODE_OK) {
ereport(LOG, (errmsg("copy_guc_lines failed,code error:%d", retcode)));
}
release_opt_lines(opt_lines);
opt_lines = NULL;
}
return retcode;
}
/*
* @@GaussDB@@
* Brief : copy_asyn_lines
* Description : update the specified lines of the file
* Notes :
*/
ErrCode update_temp_file(char* tempfilepath, char** copy_to_line, const char** opt_name)
{
char** opt_lines = NULL;
ErrCode ret;
opt_lines = read_guc_file(tempfilepath);
if (opt_lines == NULL) {
ereport(LOG, (errmsg("the config file has no data,please check it.")));
return CODE_INTERNAL_ERROR;
}
modify_guc_lines(&opt_lines, opt_name, copy_to_line);
ret = write_guc_file(tempfilepath, opt_lines);
release_opt_lines(opt_lines);
opt_lines = NULL;
if (ret == CODE_OK) {
ereport(LOG, (errmsg("the config file %s updates success.", tempfilepath)));
}
return ret;
}
/*
* @@GaussDB@@
* Brief : get the file lock
* Description :
* Notes :
*/
ErrCode get_file_lock(const char* path, ConfFileLock* filelock)
{
FILE* fp = NULL;
struct stat statbuf;
char content[PG_LOCKFILE_SIZE] = {0};
if (lstat(path, &statbuf) != 0) {
fp = fopen(path, PG_BINARY_W);
if (NULL == fp) {
ereport(LOG, (errmsg("Can't open lock file for write\"%s\",errormsg: %s", path, gs_strerror(errno))));
return CODE_OPEN_CONFFILE_FAILED;
} else {
if (fwrite(content, PG_LOCKFILE_SIZE, 1, fp) != 1) {
fclose(fp);
ereport(LOG, (errmsg("Can't write lock file \"%s\",errormsg: %s", path, gs_strerror(errno))));
return CODE_WRITE_CONFFILE_ERROR;
}
fclose(fp);
}
}
if ((fp = fopen(path, PG_BINARY_RW)) == NULL) {
ereport(LOG, (errmsg("could not open file or directory \"%s\",errormsg: %s", path, gs_strerror(errno))));
return CODE_OPEN_CONFFILE_FAILED;
}
if (flock(fileno(fp), LOCK_EX | LOCK_NB, 0, START_LOCATION, statbuf.st_size) == -1) {
ereport(LOG, (errmsg("could not lock file or directory \"%s\",errormsg: %s", path, gs_strerror(errno))));
fclose(fp);
return CODE_LOCK_CONFFILE_FAILED;
}
filelock->fp = fp;
filelock->size = statbuf.st_size;
return CODE_OK;
}
/*
* @@GaussDB@@
* Brief : release the file lock
* Description :
* Notes :
*/
void release_file_lock(ConfFileLock* filelock)
{
int ret;
ret = flock(fileno(filelock->fp), LOCK_UN, 0, START_LOCATION, filelock->size);
if (ret != 0)
ereport(WARNING, (errmsg("unlock file failed")));
fclose(filelock->fp);
filelock->fp = NULL;
filelock->size = 0;
}
/*append set string to input_set_message*/
void append_set_message(const char* str)
{
MemoryContext oldcontext = MemoryContextSwitchTo(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB));
if ((*u_sess->utils_cxt.input_set_message).maxlen == 0) {
initStringInfo(&(*u_sess->utils_cxt.input_set_message));
}
appendStringInfoString(&(*u_sess->utils_cxt.input_set_message), str);
appendStringInfoString(&(*u_sess->utils_cxt.input_set_message), ";");
MemoryContextSwitchTo(oldcontext);
}
/*
* @Description: make set message with hash table
* @IN void
* @Return: void
* @See also:
*/
void make_set_message(void)
{
if (u_sess->utils_cxt.set_params_htab == NULL)
return;
MemoryContext oldcontext = MemoryContextSwitchTo(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB));
/*
* If input_set_message exists, we will destroy it.
* The reason for this is that the original string
* contains the parameters that need to be reset. In
* this case, we need to rebuild the message string
* based on the hash table
*/
if ((*u_sess->utils_cxt.input_set_message).maxlen == 0) {
initStringInfo(&(*u_sess->utils_cxt.input_set_message));
} else {
resetStringInfo(&(*u_sess->utils_cxt.input_set_message));
}
HASH_SEQ_STATUS hash_seq;
hash_seq_init(&hash_seq, u_sess->utils_cxt.set_params_htab);
GucParamsEntry* entry = NULL;
/*Get all session params from the hash table to rebuild message string */
while ((entry = (GucParamsEntry*)hash_seq_search(&hash_seq)) != NULL) {
PG_TRY();
{
appendStringInfoString(&(*u_sess->utils_cxt.input_set_message), entry->query);
appendStringInfoString(&(*u_sess->utils_cxt.input_set_message), ";");
}
PG_CATCH();
{
hash_seq_term(&hash_seq);
MemoryContextSwitchTo(oldcontext);
PG_RE_THROW();
}
PG_END_TRY();
}
MemoryContextSwitchTo(oldcontext);
}
/*
* @Description: init params hash table
* @IN void
* @Return: void
* @See also:
*/
void init_set_params_htab(void)
{
HASHCTL hash_ctl;
errno_t errval = memset_s(&hash_ctl, sizeof(hash_ctl), 0, sizeof(hash_ctl));
securec_check_errval(errval, , LOG);
hash_ctl.keysize = NAMEDATALEN;
hash_ctl.hcxt = SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB);
hash_ctl.entrysize = sizeof(GucParamsEntry);
hash_ctl.hash = string_hash;
u_sess->utils_cxt.set_params_htab = hash_create(
"set params hash table", WORKLOAD_STAT_HASH_SIZE, &hash_ctl, HASH_CONTEXT | HASH_ELEM | HASH_FUNCTION);
}
/*
* @Description: check message for sending
* @IN stmt: variable set statement
* @IN queryString: query string
* @Return: 0: append
* 1: rebuild
* -1: none
* @See also:
*/
int check_set_message_to_send(const VariableSetStmt* stmt, const char* queryString)
{
/* no hash table, we can only choose appending mode */
if (u_sess->utils_cxt.set_params_htab == NULL)
return 0;
/* variable name is invalid, ignore this */
if (!StringIsValid(stmt->name))
return -1;
bool found = false;
GucParamsEntry* entry =
(GucParamsEntry*)hash_search(u_sess->utils_cxt.set_params_htab, stmt->name, HASH_ENTER, &found);
USE_MEMORY_CONTEXT(SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB));
/* parameter is set, we will update the entry for making a new message */
if (found) {
if (entry->query)
pfree_ext(entry->query);
entry->query = pstrdup(queryString);
return 1;
}
errno_t errval = strncpy_s(entry->name, sizeof(entry->name), stmt->name, sizeof(entry->name) - 1);
securec_check_errval(errval, , LOG);
entry->query = pstrdup(queryString);
return 0;
}
/*get set commant in input_set_message*/
char* get_set_string()
{
if ((*u_sess->utils_cxt.input_set_message).len > 0) {
return (*u_sess->utils_cxt.input_set_message).data;
} else {
return NULL;
}
}
/*
* @Description: reset params hash table
* @IN htab: hash table to be reset
* @Return: void
* @See also:
*/
void reset_params_htab(HTAB* htab, bool isCommit)
{
/* need not process hash table */
if (htab == NULL || hash_get_num_entries(htab) <= 0)
return;
HASH_SEQ_STATUS hash_seq;
hash_seq_init(&hash_seq, htab);
GucParamsEntry* entry = NULL;
/* remove all session params from the hash table.*/
while ((entry = (GucParamsEntry*)hash_seq_search(&hash_seq)) != NULL) {
if (isCommit)
(void)register_pooler_session_param(entry->name, entry->query, POOL_CMD_GLOBAL_SET);
if (entry->query)
pfree_ext(entry->query);
hash_search(htab, entry->name, HASH_REMOVE, NULL);
}
}
void reset_set_message(bool isCommit)
{
if ((*u_sess->utils_cxt.input_set_message).maxlen != 0) {
resetStringInfo(&(*u_sess->utils_cxt.input_set_message));
}
reset_params_htab(u_sess->utils_cxt.set_params_htab, isCommit);
}
#define ERRMSG_EMPTY_MODULE_NAME "empty module name"
#define ERRMSG_MODNAME_NOT_FOUND "module name \"%s\" not found"
#define ERRMSG_EMPTY_MODULE_LIST "empty module list"
#define ERRMSG_MODLIST_NOT_FOUND "module list not found"
#define HINT_MODULE_LIST_FMT "Module list begins with '(', ends with ')', and is delimited with '%c'."
#define HINT_QUERY_ALL_MODULES "Query all the existing modules by SHOW logging_module."
#define SKIP_SPACE(_p) \
do { \
while (*(_p) && ' ' == *(_p)) { \
++(_p); \
} \
} while (0)
/*
* @Description: check whether keyword "on"/"off" is matched.
* @IN/OUT start: input text which will be updated if true returned.
* @OUT turn_on: "on" --> true; "off" --> false;
* @Return: return false if any keyword is not found; or return true.
* @See also:
*/
static inline bool string_guc_keyword_matched(char** start, bool* turn_on)
{
char* p = *start;
SKIP_SPACE(p);
if (0 == pg_strncasecmp("on", p, 2)) {
p += 2;
*turn_on = true;
} else if (0 == pg_strncasecmp("off", p, 3)) {
p += 3;
*turn_on = false;
} else {
/* keyword "on"/"off" not found */
goto missing_kw;
}
if (*p && !(' ' == *p || '(' == *p)) {
/* "on"/"off" is the prefix of this word, error */
goto missing_kw;
}
/* update string position */
*start = p;
return true;
missing_kw:
/* bad format: not found key words "on" or "off" */
GUC_check_errmsg("missing keywords \"on\" or \"off\"");
GUC_check_errdetail("Must begin with keyword \"on\" or \"off\".");
return false;
}
/*
* @Description: check whether list starts with '(' and is not empty.
* @IN/OUT start: input text which will be updated if true returned.
* @Return: return true if list starts with '(' and this is not empty;
* otherwise return false.
* @See also:
*/
static inline bool string_guc_list_start(char** start)
{
char* p = *start;
SKIP_SPACE(p);
if ('\0' == *p || '(' != *p) {
/* bad format: not found ( */
GUC_check_errmsg(ERRMSG_MODLIST_NOT_FOUND);
GUC_check_errdetail("'(' is not found.");
GUC_check_errhint(HINT_MODULE_LIST_FMT, MOD_DELIMITER);
return false;
}
++p; /* skip '(' */
SKIP_SPACE(p);
if ('\0' == *p) {
/* bad format: '(' not match anything */
GUC_check_errmsg(ERRMSG_MODLIST_NOT_FOUND);
GUC_check_errhint(HINT_MODULE_LIST_FMT, MOD_DELIMITER);
return false;
} else if (')' == *p) {
/* bad format: empty list given */
GUC_check_errmsg(ERRMSG_EMPTY_MODULE_LIST);
GUC_check_errdetail("Must one or more modules are given, and delimited with '%c'.", MOD_DELIMITER);
return false;
}
*start = p; /* update string position */
return true;
}
/*
* @Description: check whether list ends with ')' and well formatted.
* @IN delim_found: "true" value means the last module name is empty.
* @IN/OUT start: input text which will be updated if true returned.
* @Return: true if it's well formatted; otherwise return false.
* @See also:
*/
static inline bool string_guc_list_end(char** start, bool delim_found)
{
char* p = *start;
if ('\0' == *p) {
/* bad format: ')' not found */
GUC_check_errmsg(ERRMSG_MODLIST_NOT_FOUND);
GUC_check_errdetail("Module list does not end with ')'.");
GUC_check_errhint(HINT_MODULE_LIST_FMT, MOD_DELIMITER);
return false;
}
if (delim_found) {
/* bad format: the last module name is empty */
GUC_check_errmsg(ERRMSG_EMPTY_MODULE_NAME);
GUC_check_errdetail("The last module name is empty.");
GUC_check_errhint("Module name must be given between '%c' and ')'.", MOD_DELIMITER);
return false;
}
++p; /* until here *p is ')', skip it */
SKIP_SPACE(p);
if ('\0' != *p) {
/* bad format: non-space found after ')' */
GUC_check_errmsg("extra text found after the first list of module names");
GUC_check_errhint("Remove the extra text after the first list of module names.");
return false;
}
*start = p; /* update string position */
return true;
}
/*
* @Description: find the next module name and start will point to it.
* @OUT delim_found: mainly for the last module name which cannot be empty.
* @IN/OUT start: input text which will be updated if true returned.
* @Return: true if next name found; otherwise false.
* @See also:
*/
static inline bool string_guc_list_find_next_name(char** start, bool* delim_found)
{
char* p = *start;
/* reset to be false */
*delim_found = false;
while (*p && (' ' == *p || MOD_DELIMITER == *p)) {
if (MOD_DELIMITER == *p) {
if (!(*delim_found)) {
*delim_found = true;
} else {
/* bad format: empty module name */
GUC_check_errmsg(ERRMSG_EMPTY_MODULE_NAME);
GUC_check_errdetail("Module name cannot be empty.");
GUC_check_errhint("Module name must be given between '%c'.", MOD_DELIMITER);
return false;
}
}
++p; /* skip spaces and delimiter */
}
*start = p; /* update string position */
return true;
}
/*
* @Description: parse module name and check its validation.
* @OUT all_found: "ALL" modules name is found
* @IN/OUT mods: to remember all the found module id
* @IN/OUT mods_num: size of modes[]
* @IN mod_name: this module name
* @IN mod_name_len: size of this module name
* @Return:
* @See also:
*/
static inline bool logging_module_parse_name(
char* mod_name, int mod_name_len, ModuleId* mods, int* mods_num, bool* all_found)
{
if (mod_name_len > 0 && mod_name_len < MODULE_NAME_MAXLEN) {
ModuleId modid = MOD_MAX;
const char ch = mod_name[mod_name_len];
/* judge whether it's a valid module name */
mod_name[mod_name_len] = '\0';
modid = get_module_id(mod_name);
if (MOD_MAX == modid) {
/* bad format: not existing module name */
GUC_check_errmsg(ERRMSG_MODNAME_NOT_FOUND, mod_name);
GUC_check_errhint(HINT_QUERY_ALL_MODULES);
/* needn't to resotre the replaced char because it's a copy of new value. */
return false;
}
mod_name[mod_name_len] = ch; /* restore the replaced char */
if (MOD_ALL == modid) {
*all_found = true;
}
mods[*mods_num] = modid;
(*mods_num)++;
return true;
} else {
/* bad format: empty string or not valid module name */
if (0 == mod_name_len) {
GUC_check_errmsg(ERRMSG_EMPTY_MODULE_NAME);
GUC_check_errdetail("Module name cannot be empty.");
} else {
mod_name[mod_name_len] = '\0';
GUC_check_errmsg(ERRMSG_MODNAME_NOT_FOUND, mod_name);
/* needn't to resotre the replaced char because it's a copy of new value. */
}
GUC_check_errhint(HINT_QUERY_ALL_MODULES);
return false;
}
}
/*
* @Description: check whether the new GUC value is valid.
* 1. format is a) on(m1,m2,...) or b) off(m3,m4,..)
* 2. module name is valid
* if all the conditions hold, apply these changes to this
* session and return true; otherwise return false.
* @IN newval: logging_module's new value
* @IN assign: only check the new value if assign is false;
* otherwise check and assign.
* @Return: if newval is well-formatted, return true; otherwise return false.
* @See also:
*/
template <bool assign>
static bool logging_module_guc_check(char* newval)
{
char* p = newval;
bool all_found = false;
bool turn_on = false;
/* forbit that no module name appear between two delimiters.
* forbit that no module name appear between delimiter and ')'
*/
bool delim_found = false;
/* treat all the error type as syntax error. */
GUC_check_errcode(ERRCODE_SYNTAX_ERROR);
if (!string_guc_keyword_matched(&p, &turn_on)) {
return false;
}
if (!string_guc_list_start(&p)) {
return false;
}
ModuleId* mods = (ModuleId*)palloc(sizeof(ModuleId) * MOD_MAX);
int mods_num = 0;
while (*p && ')' != *p) {
/* remember the start of module name */
char* mod_name = p;
/* fine the end char of module name */
while (*p && (MOD_DELIMITER != *p && ' ' != *p && ')' != *p)) {
++p;
}
if (!logging_module_parse_name(mod_name, p - mod_name, mods, &mods_num, &all_found) ||
!string_guc_list_find_next_name(&p, &delim_found)) {
pfree_ext(mods);
return false;
}
}
if (!string_guc_list_end(&p, delim_found)) {
pfree_ext(mods);
return false;
}
if (assign) {
module_logging_batch_set(mods, mods_num, turn_on, all_found);
}
pfree_ext(mods);
return true;
}
/*
* @Description: check whether new value is well-formatted for GUC logging_module.
* @IN extra: unused
* @IN newval: new value
* @IN source: unused
* @Return: if newval is well-formatted, return true; otherwise return false.
* @See also:
*/
bool logging_module_check(char** newval, void** extra, GucSource source)
{
((void)extra); /* not used argument */
((void)source); /* not used argument */
char* tmpNewVal = pstrdup(*newval);
bool ret = logging_module_guc_check<false>(tmpNewVal);
pfree(tmpNewVal);
return ret;
}
/*
* @Description: update logging_module according new value.
* @IN extra: unused
* @IN newval: new value
* @See also:
*/
void logging_module_guc_assign(const char* newval, void* extra)
{
((void)extra); /* not used argument */
char* tmpNewVal = pstrdup(newval);
/* logging_module_check() will be called first, so here don't care returned value */
(void)logging_module_guc_check<true>(tmpNewVal);
pfree(tmpNewVal);
}
/* ------------------------------------------------------------ */
/* GUC hooks for inplace/grey upgrade */
/* ------------------------------------------------------------ */
static bool check_is_upgrade(bool* newval, void** extra, GucSource source)
{
switch (source) {
case PGC_S_DYNAMIC_DEFAULT:
case PGC_S_ENV_VAR:
case PGC_S_ARGV:
GUC_check_errmsg("IsInplaceUpgrade GUC can only be set with SET command.");
return false;
case PGC_S_FILE:
switch (currentGucContext) {
case PGC_SIGHUP:
case PGC_POSTMASTER:
ereport(WARNING,
(errmsg("IsInplaceUpgrade GUC can not be set in postgresql.conf. Set to default (false).")));
*newval = false;
return true;
/* Should not come here */
default:
GUC_check_errmsg("IsInplaceUpgrade GUC can not be set in postgresql.conf.");
return false;
}
return false; /* Should not come here */
case PGC_S_DATABASE:
case PGC_S_USER:
case PGC_S_DATABASE_USER:
case PGC_S_CLIENT:
case PGC_S_OVERRIDE:
case PGC_S_INTERACTIVE:
case PGC_S_TEST:
ereport(WARNING,
(errmsg("IsInplaceUpgrade GUC can only be set with SET command. Set to default (false)"
".")));
*newval = false;
return true;
case PGC_S_DEFAULT:
case PGC_S_SESSION:
if (*newval && u_sess->attr.attr_common.upgrade_mode == 0) {
GUC_check_errmsg("Can not set IsInPlaceUpgrade to true while not performing upgrade.");
return false;
}
return true;
default:
GUC_check_errmsg("Unknown GUC source for setting IsInplaceUpgrade.");
return false;
}
}
GucContext get_guc_context()
{
return currentGucContext;
}
static void assign_is_inplace_upgrade(const bool newval, void* extra)
{
if (newval && u_sess->attr.attr_common.XactReadOnly)
u_sess->attr.attr_common.XactReadOnly = false;
}
/*
* @Description : parse analysis options name and check its validation.
* @in/out options : to remember all the found analysis option id
* @in/out opt_num : size of AnalysisOpt[]
* @in anls_opt_name : this analysis option name
* @in anls_opt_name_len : size of this analysis option name
* @out all_found : "ALL" analysis option name is found
* @return : true if parse options successfully
*/
static inline bool analysis_options_parse_name(
char* anls_opt_name, int anls_opt_name_len, AnalysisOpt* options, int* opt_num, bool* all_found)
{
if (anls_opt_name_len > 0 && anls_opt_name_len < ANLS_OPT_NAME_MAXLEN) {
AnalysisOpt anls_option = ANLS_MAX;
const char ch = anls_opt_name[anls_opt_name_len];
/* judge whether it's a valid analysis option name */
anls_opt_name[anls_opt_name_len] = '\0';
anls_option = get_anls_opt_id(anls_opt_name);
if (ANLS_MAX == anls_option) {
/* bad format: not existing analysis option name */
GUC_check_errmsg(ERRMSG_MODNAME_NOT_FOUND, anls_opt_name);
GUC_check_errhint(HINT_QUERY_ALL_MODULES);
/* needn't to resotre the replaced char because it's a copy of new value. */
return false;
}
/* repeat set is not allow */
for (int i = 0; i < *opt_num; i++) {
if (options[i] == anls_option) {
GUC_check_errmsg("repeat option: %s.", anls_opt_name);
GUC_check_errdetail("Please don't set analysis option name repeatedly.");
return false;
}
}
anls_opt_name[anls_opt_name_len] = ch; /* restore the replaced char */
if (ANLS_ALL == anls_option) {
*all_found = true;
}
options[*opt_num] = anls_option;
(*opt_num)++;
return true;
} else {
/* bad format: empty string or not valid module name */
if (0 == anls_opt_name_len) {
GUC_check_errmsg(ERRMSG_EMPTY_MODULE_NAME);
GUC_check_errdetail("analysis option name cannot be empty.");
} else {
/* needn't to resotre the replaced char because it's a copy of new value. */
anls_opt_name[anls_opt_name_len] = '\0';
GUC_check_errmsg(ERRMSG_MODNAME_NOT_FOUND, anls_opt_name);
}
GUC_check_errhint(HINT_QUERY_ALL_MODULES);
return false;
}
}
/*
* @Description : Check whether the new GUC value is valid. Only support the following support:
* 1. format is a) on(anls_opt1, anls_opt2, ...) or b) off(anls_opt3, anls_opt4, ...)
* 2. analysis option name is valid
* If all the conditions hold, apply these changes to this session and return true;
* otherwise return false.
* @in newval : analysis-options's new value
* @return : if newval is well-formatted, return true; otherwise return false.
*/
template <bool assign>
static bool analysis_options_guc_check(char* newval)
{
char* p = newval;
bool all_found = false;
bool turn_on = false;
/* forbit that no option name appear between two delimiters, or between delimiter and ')' */
bool delim_found = false;
/* treat all the error type as syntax error. */
GUC_check_errcode(ERRCODE_SYNTAX_ERROR);
if (!string_guc_keyword_matched(&p, &turn_on)) {
return false;
}
if (!string_guc_list_start(&p)) {
return false;
}
AnalysisOpt* options = (AnalysisOpt*)palloc(sizeof(AnalysisOpt) * ANLS_MAX);
int opt_num = 0;
while (*p && ')' != *p) {
/* remember the start of option name */
char* anls_opt_name = p;
/* fine the end char of option name */
while (*p && (OPTION_DELIMITER != *p && ' ' != *p && ')' != *p)) {
++p;
}
if (!analysis_options_parse_name(anls_opt_name, p - anls_opt_name, options, &opt_num, &all_found) ||
!string_guc_list_find_next_name(&p, &delim_found)) {
pfree_ext(options);
return false;
}
}
if (!string_guc_list_end(&p, delim_found)) {
pfree_ext(options);
return false;
}
if (assign) {
anls_opt_batch_set(options, opt_num, turn_on, all_found);
}
pfree_ext(options);
return true;
}
/*
* @Description : show the content of GUC "analysis_options"
* @return : analysis_options descripting text
*/
static const char* analysis_options_guc_show(void)
{
/*
* showing results is as following:
* ALL, on(anls_opt1, anls_opt2, ...), off(anls_opt3, anls_opt4, ...)
*/
StringInfoData outbuf;
initStringInfo(&outbuf);
const char* anls_opt_name = NULL;
bool rm_last_delim = false;
/* copy the special "ALL" */
anls_opt_name = get_valid_anls_opt_name(ANLS_ALL);
appendStringInfo(&outbuf, "%s%c", anls_opt_name, OPTION_DELIMITER);
/* copy the string "on(" */
appendStringInfo(&outbuf, "on(");
/* copy each analysis option name whose analysis option is enable */
rm_last_delim = false;
for (int i = ANLS_ALL + 1; i < ANLS_MAX; i++) {
if (anls_opt_is_on((AnalysisOpt)i)) {
/* For condition and anls_opt_is_on() will assure its requirement. */
anls_opt_name = get_valid_anls_opt_name((AnalysisOpt)i);
appendStringInfo(&outbuf, "%s%c", anls_opt_name, OPTION_DELIMITER);
rm_last_delim = true;
}
}
if (rm_last_delim) {
--outbuf.len;
outbuf.data[outbuf.len] = '\0';
}
/* copy the string "), off(" */
appendStringInfo(&outbuf, "),off(");
/* copy each option name whose analysis is disable */
rm_last_delim = false;
for (int i = ANLS_ALL + 1; i < ANLS_MAX; i++) {
if (!anls_opt_is_on((AnalysisOpt)i)) {
/* For condition will assure its requirement. */
anls_opt_name = get_valid_anls_opt_name((AnalysisOpt)i);
appendStringInfo(&outbuf, "%s%c", anls_opt_name, OPTION_DELIMITER);
rm_last_delim = true;
}
}
if (rm_last_delim) {
--outbuf.len;
outbuf.data[outbuf.len] = '\0';
}
/* end with string ")" */
appendStringInfoChar(&outbuf, ')');
return outbuf.data;
}
bool transparent_encrypt_kms_url_region_check(char** newval, void** extra, GucSource source)
{
char RFC3986_chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.~!*'();:@&=+$,/?#[]";
char* val = NULL;
const int MAX_URL_LEN = 2048; /* The max length of URL */
if (newval == NULL || *newval == NULL)
return true;
/* Check if the url contains illegal characters. */
for (val = *newval; *val; val++) {
if (strchr(RFC3986_chars, *val) == NULL)
return false;
}
if ((val - *newval) > MAX_URL_LEN)
return false;
return true;
}
/*
* @Description : check whether new value is well-formatted for GUC analysis options.
* @in extra : unused
* @in source : unuse
* @in newval : new value
* @return : if newval is well-formatted, return true; otherwise return false.
*/
static bool analysis_options_check(char** newval, void** extra, GucSource source)
{
((void)extra); /* not used argument */
((void)source); /* not used argument */
char* tmpNewVal = pstrdup(*newval);
bool ret = analysis_options_guc_check<false>(tmpNewVal);
pfree(tmpNewVal);
return ret;
}
/*
* @Description : update analysis_options according new value.
* @in extra : unused
* @in newval : new value
*/
static void analysis_options_guc_assign(const char* newval, void* extra)
{
((void)extra); /* not used argument */
char* tmpNewVal = pstrdup(newval);
/* analysis_options_check() will be called first,
* so here don't care returned value */
(void)analysis_options_guc_check<true>(tmpNewVal);
pfree(tmpNewVal);
}
#define DEFAULT_PARTIAL_SEQSCAN false
#define DEFAULT_RECOVERY_UNDO_WORKERS 1
#define DEFAULT_CAND_LIST_USAGE_COUNT false
#define DEFAULT_USTATS_TRACKER_NAPTIME 20
#define DEFAULT_UMAX_PRUNE_SEARCH_LEN 10
static void InitUStoreAttr()
{
u_sess->attr.attr_storage.enable_ustore_partial_seqscan = DEFAULT_PARTIAL_SEQSCAN;
u_sess->attr.attr_storage.enable_candidate_buf_usage_count = DEFAULT_CAND_LIST_USAGE_COUNT;
u_sess->attr.attr_storage.ustats_tracker_naptime = DEFAULT_USTATS_TRACKER_NAPTIME;
u_sess->attr.attr_storage.umax_search_length_for_prune = DEFAULT_UMAX_PRUNE_SEARCH_LEN;
}
bool check_percentile(char** newval, void** extra, GucSource source)
{
char* rawname = NULL;
List* namelist = NIL;
/* Need a modifiable copy of string */
rawname = pstrdup(*newval);
/* Parse string into list of identifiers */
if (!SplitIdentifierInteger(rawname, ',', &namelist)) {
/* syntax error in name list */
GUC_check_errdetail("List syntax is invalid.");
pfree_ext(rawname);
list_free_ext(namelist);
return false;
}
/*
* We used to try to check that the named schemas exist, but there are
* many valid use-cases for having search_path settings that include
* schemas that don't exist; and often, we are not inside a transaction
* here and so can't consult the system catalogs anyway. So now, the only
* requirement is syntactic validity of the identifier list.
*/
pfree_ext(rawname);
list_free_ext(namelist);
return true;
}
static void assign_instr_unique_sql_count(int newval, void* extra)
{
/* oid of reset_instr_unique_sql */
#define RESET_UNIQUE_SQL_FUNC 5716
/* only let WLMProcessThread do the cleanup */
if (AmWLMWorkerProcess() && (IS_PGXC_COORDINATOR || IS_SINGLE_NODE) &&
u_sess->attr.attr_common.instr_unique_sql_count > newval) {
bool result = DatumGetBool(OidFunctionCall3(RESET_UNIQUE_SQL_FUNC,
CStringGetTextDatum("GLOBAL"),
CStringGetTextDatum("BY_GUC"),
Int32GetDatum(newval)));
ereport(LOG,
(errmodule(MOD_INSTR),
errmsg("[UniqueSQL] cleanup unique sql due to instr_unique_sql_count shrunk: %s",
result ? "success" : "fail")));
}
}
bool check_asp_flush_mode(char** newval, void** extra, GucSource source)
{
if (strcmp(*newval, "table") == 0 || strcmp(*newval, "file") == 0 || strcmp(*newval, "all") == 0) {
return true;
}
return false;
}
/*
* callback function for numa_distribute_mode checking.
*/
bool check_numa_distribute_mode(char** newval, void** extra, GucSource source)
{
#ifdef __USE_NUMA
if (strcmp(*newval, "all") == 0) {
return true;
}
#endif
if (strcmp(*newval, "none") == 0) {
return true;
}
return false;
}
#include "guc-file.inc"
#ifdef ENABLE_MULTIPLE_NODES
static void assign_gtm_rw_timeout(int newval, void* extra)
{
SetGTMrwTimeout(newval);
}
static bool check_gtmhostconninfo(char** newval, void** extra, GucSource source)
{
char *str = NULL;
char *tmp = NULL;
bool bRet = true;
if (NULL == newval) {
return false;
}
str = pstrdup(*newval);
if (NULL == str) {
return false;
}
tmp = str;
while (*tmp != '\0') {
if (isalpha(*tmp) || isdigit(*tmp) || *tmp == ' ' || *tmp == ',' || *tmp == '.' || *tmp == '*') {
tmp++;
continue;
}
bRet = false;
break;
}
pfree(str);
return bRet;
}
GTM_HOST_IP* ParseGtmHostConnInfo(const char* ConnInfoList, int* InfoLength)
{
char* ReplStr = NULL;
char* token = NULL;
char* tmp_token = NULL;
uint32 len = 0;
uint32 tmp;
GTM_HOST_IP* pHostIP = NULL;
int rc;
if (ConnInfoList == NULL)
return NULL;
uint32 infolen = strlen(ConnInfoList);
ReplStr = pstrdup(ConnInfoList);
if (ReplStr == NULL)
return NULL;
token = strtok_r(ReplStr, ",", &tmp_token);
while (token != NULL) {
len++;
token = strtok_r(NULL, ",", &tmp_token);
}
pfree(ReplStr);
MemoryContext currCxt = SESS_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_CBB);
pHostIP = (len > 0) ? static_cast<GTM_HOST_IP *>(MemoryContextAllocZero(currCxt, sizeof(GTM_HOST_IP) * len))
: static_cast<GTM_HOST_IP *>(MemoryContextAllocZero(currCxt, sizeof(GTM_HOST_IP)));
if (pHostIP == NULL)
return NULL;
ReplStr = static_cast<char*>(MemoryContextAllocZero(currCxt, infolen + 1));
if (ReplStr == NULL) {
pfree(pHostIP);
return NULL;
}
for (len = 0, tmp = 0; len < infolen; len++) {
if (ConnInfoList[len] != ' ')
ReplStr[tmp++] = ConnInfoList[len];
}
ReplStr[tmp] = '\0';
len = 0;
token = strtok_r(ReplStr, ",", &tmp_token);
while (token != NULL) {
rc = strncpy_s(pHostIP[len].acHostIP, sizeof(pHostIP[len].acHostIP), token, sizeof(pHostIP[len].acHostIP) - 1);
securec_check(rc, "\0", "\0");
pHostIP[len].acHostIP[127] = '\0';
len++;
token = strtok_r(NULL, ",", &tmp_token);
}
*InfoLength = len;
pfree(ReplStr);
return pHostIP;
}
static void assign_gtmhostconninfo0(const char* newval, void* extra)
{
pfree_ext(u_sess->attr.attr_common.GtmHostArray[0]);
u_sess->attr.attr_common.GtmHostArray[0] =
ParseGtmHostConnInfo(newval, &u_sess->attr.attr_common.GtmHostIPNumArray[0]);
}
static void assign_gtmhostconninfo1(const char* newval, void* extra)
{
pfree_ext(u_sess->attr.attr_common.GtmHostArray[1]);
u_sess->attr.attr_common.GtmHostArray[1] =
ParseGtmHostConnInfo(newval, &u_sess->attr.attr_common.GtmHostIPNumArray[1]);
}
static void assign_gtmhostconninfo2(const char* newval, void* extra)
{
pfree_ext(u_sess->attr.attr_common.GtmHostArray[2]);
u_sess->attr.attr_common.GtmHostArray[2] =
ParseGtmHostConnInfo(newval, &u_sess->attr.attr_common.GtmHostIPNumArray[2]);
}
static void assign_gtmhostconninfo3(const char* newval, void* extra)
{
pfree_ext(u_sess->attr.attr_common.GtmHostArray[3]);
u_sess->attr.attr_common.GtmHostArray[3] =
ParseGtmHostConnInfo(newval, &u_sess->attr.attr_common.GtmHostIPNumArray[3]);
}
static void assign_gtmhostconninfo4(const char* newval, void* extra)
{
pfree_ext(u_sess->attr.attr_common.GtmHostArray[4]);
u_sess->attr.attr_common.GtmHostArray[4] =
ParseGtmHostConnInfo(newval, &u_sess->attr.attr_common.GtmHostIPNumArray[4]);
}
static void assign_gtmhostconninfo5(const char* newval, void* extra)
{
pfree_ext(u_sess->attr.attr_common.GtmHostArray[5]);
u_sess->attr.attr_common.GtmHostArray[5] =
ParseGtmHostConnInfo(newval, &u_sess->attr.attr_common.GtmHostIPNumArray[5]);
}
static void assign_gtmhostconninfo6(const char* newval, void* extra)
{
pfree_ext(u_sess->attr.attr_common.GtmHostArray[6]);
u_sess->attr.attr_common.GtmHostArray[6] =
ParseGtmHostConnInfo(newval, &u_sess->attr.attr_common.GtmHostIPNumArray[6]);
}
static void assign_gtmhostconninfo7(const char* newval, void* extra)
{
pfree_ext(u_sess->attr.attr_common.GtmHostArray[7]);
u_sess->attr.attr_common.GtmHostArray[7] =
ParseGtmHostConnInfo(newval, &u_sess->attr.attr_common.GtmHostIPNumArray[7]);
}
/**
* check value of compaciton strategy one by one
* min_part in range [2,5]
* max_part in range [4,10]
* level_middle in range [4,12]
* level_max in range [7,20]
* is_fuzzy in range [0,1]
*/
static bool check_compaciton_strategy(char** newval, void** extra, GucSource source)
{
char* check_char = TrimStr(*newval);
if (check_char == NULL) {
return true;
}
if (strlen(check_char) > TsProducer::MAX_STRATEGY_LEN) {
GUC_check_errdetail("input string too long, lenth is %lu, expected less than 15", strlen(*newval));
return false;
}
/* do not accept any thing except number and comma */
for (uint i = 0; i < strlen(check_char); i++) {
if ((check_char[i] < '0' || check_char[i] > '9') && check_char[i] != ',') {
GUC_check_errdetail("unexpacted letter in input val %c.", check_char[i]);
return false;
}
}
char* ptoken = NULL;
char* psave = NULL;
const char* pdelimiter = ",";
ptoken = TrimStr(strtok_r(check_char, pdelimiter, &psave));
/* filter min_parts */
if (!ts_compaction_guc_filter(ptoken, TsProducer::MIN_PART_MIN, TsProducer::MIN_PART_MAX)) {
GUC_check_errdetail("min part over range.");
return false;
}
/* filter max_parts */
ptoken = TrimStr(strtok_r(NULL, pdelimiter, &psave));
if (!ts_compaction_guc_filter(ptoken, TsProducer::MAX_PART_MIN, TsProducer::MAX_PART_MAX)) {
GUC_check_errdetail("max part over range.");
return false;
}
/* filter level middle */
ptoken = TrimStr(strtok_r(NULL, pdelimiter, &psave));
if (!ts_compaction_guc_filter(ptoken, TsProducer::LEVEL_MID_MIN, TsProducer::LEVEL_MID_MAX)) {
GUC_check_errdetail("level middle over range.");
return false;
}
/* filter level max */
ptoken = TrimStr(strtok_r(NULL, pdelimiter, &psave));
if (!ts_compaction_guc_filter(ptoken, TsProducer::LEVEL_MAX_MIN, TsProducer::LEVEL_MAX_MAX)) {
GUC_check_errdetail("level max over range.");
return false;
}
/* we only accept is_fuzzy to be 0 or 1 */
ptoken = TrimStr(psave);
Assert(ptoken != NULL);
if (strlen(ptoken) != 1 || strcmp(ptoken, ",") == 0 || !ts_compaction_guc_filter(ptoken, 0, 1)) {
GUC_check_errdetail("fuzzy value invalid!");
return false;
}
pfree(ptoken);
pfree(check_char);
return true;
}
/**
* filter guc based on min/max number
*/
static bool ts_compaction_guc_filter(const char* ptoken, const int min_num, const int max_num)
{
int32 temp_number = 0;
if ((ptoken) != NULL && (ptoken)[0] != '\0') {
temp_number = pg_strtoint32(ptoken);
if (temp_number >= min_num && temp_number <= max_num) {
return true;
} else if (temp_number == 0) {
return true;
} else {
return false;
}
} else {
/* ptoken id null return true */
return true;
}
return false;
}
#endif
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