/*
* InitCatalogCachePhase2 - finish initializing the caches
*
* Finish initializing all the caches, including necessary database
* access.
*
* This is *not* essential; normally we allow syscaches to be initialized
* on first use. However, it is useful as a mechanism to preload the
* relcache with entries for the most-commonly-used system catalogs.
* Therefore, we invoke this routine when we need to write a new relcache
* init file.
*/
void
InitCatalogCachePhase2(void)
{
int cacheId;
Assert(CacheInitialized);
for (cacheId = 0; cacheId < SysCacheSize; cacheId++)
{
/*
* In order for upgrade to work successfully we must be able to run
* in single user mode with a catalog like the GP 3.2 catalog. To
* support this we must skip the optional syscache initialization
* for catalog tables that did not exist in 3.2, otherwise we will
* try to read the relation before we have created it and will fail
* to startup.
*/
if ((IsBootstrapProcessingMode() || IsInitProcessingMode()) &&
((cacheinfo[cacheId].reloid == ForeignDataWrapperRelationId) ||
(cacheinfo[cacheId].reloid == ForeignServerRelationId) ||
(cacheinfo[cacheId].reloid == UserMappingRelationId)))
{
continue;
}
InitCatCachePhase2(SysCache[cacheId], true);
}
}
/*
* This routine loads a previous postmaster dump of its non-default
* settings.
*/
void
read_nondefault_variables(void)
{
FILE *fp;
char *varname,
*varvalue,
*varsourcefile;
int varsourceline;
GucSource varsource;
GucContext varscontext;
/*
* Assert that PGC_BACKEND/PGC_SU_BACKEND case in set_config_option() will
* do the right thing.
*/
Assert(IsInitProcessingMode());
/*
* Open file
*/
fp = AllocateFile(CONFIG_EXEC_PARAMS, "r");
if (!fp)
{
/* File not found is fine */
if (errno != ENOENT)
ereport(FATAL,
(errcode_for_file_access(),
errmsg("could not read from file \"%s\": %m",
CONFIG_EXEC_PARAMS)));
return;
}
for (;;)
{
struct config_generic *record;
if ((varname = read_string_with_null(fp)) == NULL)
break;
if ((record = find_option(varname, true, FATAL)) == NULL)
elog(FATAL, "failed to locate variable \"%s\" in exec config params file", varname);
if ((varvalue = read_string_with_null(fp)) == NULL)
elog(FATAL, "invalid format of exec config params file");
if ((varsourcefile = read_string_with_null(fp)) == NULL)
elog(FATAL, "invalid format of exec config params file");
if (fread(&varsourceline, 1, sizeof(varsourceline), fp) != sizeof(varsourceline))
elog(FATAL, "invalid format of exec config params file");
if (fread(&varsource, 1, sizeof(varsource), fp) != sizeof(varsource))
elog(FATAL, "invalid format of exec config params file");
if (fread(&varscontext, 1, sizeof(varscontext), fp) != sizeof(varscontext))
elog(FATAL, "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);
free(varname);
free(varvalue);
free(varsourcefile);
}
FreeFile(fp);
}