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Change server version from char pointer to char array

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With this change, it is no longer possible that the server version
is deallocated at the very moment it is read. There is still a race,
but it's mostly harmless.
This commit is contained in:
Johan Wikman
2017-06-19 13:40:18 +03:00
parent 32cd28daf2
commit 3e39ec906e
4 changed files with 39 additions and 42 deletions
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8
include/maxscale/server.h
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@ -27,7 +27,9 @@ MXS_BEGIN_DECLS
#define MAX_SERVER_ADDRESS_LEN 1024
#define MAX_SERVER_MONUSER_LEN 1024
#define MAX_SERVER_MONPW_LEN 1024
#define MAX_SERVER_MONPW_LEN 1024
#define MAX_SERVER_VERSION_LEN 256
#define MAX_NUM_SLAVES 128 /**< Maximum number of slaves under a single server*/
/**
@ -88,7 +90,7 @@ typedef struct server
SERVER_STATS stats; /**< The server statistics */
struct server *next; /**< Next server */
struct server *nextdb; /**< Next server in list attached to a service */
char *server_string; /**< Server version string, i.e. MySQL server version */
char version_string[MAX_SERVER_VERSION_LEN]; /**< Server version string, i.e. MySQL server version */
long node_id; /**< Node id, server_id for M/S or local_index for Galera */
int rlag; /**< Replication Lag for Master / Slave replication */
unsigned long node_ts; /**< Last timestamp set from M/S monitor module */
@ -308,7 +310,7 @@ extern DCB *server_get_persistent(SERVER *server, const char *user, const char
extern void server_update_address(SERVER *server, const char *address);
extern void server_update_port(SERVER *server, unsigned short port);
extern unsigned int server_map_status(const char *str);
extern bool server_set_version_string(SERVER* server, const char* string);
extern void server_set_version_string(SERVER* server, const char* string);
extern void server_set_status(SERVER *server, int bit);
extern void server_clear_status(SERVER *server, int bit);