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Allow LEAKPROOF functions for better performance of security views.

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We don't normally allow quals to be pushed down into a view created
with the security_barrier option, but functions without side effects
are an exception: they're OK.  This allows much better performance in
common cases, such as when using an equality operator (that might
even be indexable).

There is an outstanding issue here with the CREATE FUNCTION / ALTER
FUNCTION syntax: there's no way to use ALTER FUNCTION to unset the
leakproof flag.  But I'm committing this as-is so that it doesn't
have to be rebased again; we can fix up the grammar in a future
commit.

KaiGai Kohei, with some wordsmithing by me.
This commit is contained in:
Robert Haas
2012-02-13 22:20:27 -05:00
parent 2bbd88f8f8
commit cd30728fb2
28 changed files with 3329 additions and 2427 deletions
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2
src/include/catalog/catversion.h
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@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 201202083
#define CATALOG_VERSION_NO 201202131
#endif

2
src/include/catalog/pg_class.h
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@ -134,7 +134,7 @@ DATA(insert OID = 1247 ( pg_type PGNSP 71 0 PGUID 0 0 0 0 0 0 0 0 f f p r 30 0
DESCR("");
DATA(insert OID = 1249 ( pg_attribute PGNSP 75 0 PGUID 0 0 0 0 0 0 0 0 f f p r 21 0 f f f f f 3 _null_ _null_ ));
DESCR("");
DATA(insert OID = 1255 ( pg_proc PGNSP 81 0 PGUID 0 0 0 0 0 0 0 0 f f p r 26 0 t f f f f 3 _null_ _null_ ));
DATA(insert OID = 1255 ( pg_proc PGNSP 81 0 PGUID 0 0 0 0 0 0 0 0 f f p r 27 0 t f f f f 3 _null_ _null_ ));
DESCR("");
DATA(insert OID = 1259 ( pg_class PGNSP 83 0 PGUID 0 0 0 0 0 0 0 0 f f p r 27 0 t f f f f 3 _null_ _null_ ));
DESCR("");

4779
src/include/catalog/pg_proc.h
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File diff suppressed because it is too large Load Diff

1
src/include/catalog/pg_proc_fn.h
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@ -28,6 +28,7 @@ extern Oid ProcedureCreate(const char *procedureName,
bool isAgg,
bool isWindowFunc,
bool security_definer,
bool isLeakProof,
bool isStrict,
char volatility,
oidvector *parameterTypes,

2
src/include/optimizer/clauses.h
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@ -61,6 +61,8 @@ extern bool contain_subplans(Node *clause);
extern bool contain_mutable_functions(Node *clause);
extern bool contain_volatile_functions(Node *clause);
extern bool contain_nonstrict_functions(Node *clause);
extern bool contain_leaky_functions(Node *clause);
extern Relids find_nonnullable_rels(Node *clause);
extern List *find_nonnullable_vars(Node *clause);
extern List *find_forced_null_vars(Node *clause);

1
src/include/parser/kwlist.h
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@ -215,6 +215,7 @@ PG_KEYWORD("last", LAST_P, UNRESERVED_KEYWORD)
PG_KEYWORD("lc_collate", LC_COLLATE_P, UNRESERVED_KEYWORD)
PG_KEYWORD("lc_ctype", LC_CTYPE_P, UNRESERVED_KEYWORD)
PG_KEYWORD("leading", LEADING, RESERVED_KEYWORD)
PG_KEYWORD("leakproof", LEAKPROOF, UNRESERVED_KEYWORD)
PG_KEYWORD("least", LEAST, COL_NAME_KEYWORD)
PG_KEYWORD("left", LEFT, TYPE_FUNC_NAME_KEYWORD)
PG_KEYWORD("level", LEVEL, UNRESERVED_KEYWORD)

1
src/include/utils/lsyscache.h
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@ -91,6 +91,7 @@ extern Oid get_func_signature(Oid funcid, Oid **argtypes, int *nargs);
extern bool get_func_retset(Oid funcid);
extern bool func_strict(Oid funcid);
extern char func_volatile(Oid funcid);
extern bool get_func_leakproof(Oid funcid);
extern float4 get_func_cost(Oid funcid);
extern float4 get_func_rows(Oid funcid);
extern Oid get_relname_relid(const char *relname, Oid relnamespace);