diff options
Diffstat (limited to 'src/backend/utils/misc/guc-file.l')
| -rw-r--r-- | src/backend/utils/misc/guc-file.l | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/src/backend/utils/misc/guc-file.l b/src/backend/utils/misc/guc-file.l index 64f9304de56..a0044abc860 100644 --- a/src/backend/utils/misc/guc-file.l +++ b/src/backend/utils/misc/guc-file.l @@ -4,7 +4,7 @@ * * Copyright (c) 2000-2006, PostgreSQL Global Development Group * - * $PostgreSQL: pgsql/src/backend/utils/misc/guc-file.l,v 1.43 2006/08/13 01:30:17 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/utils/misc/guc-file.l,v 1.44 2006/08/13 02:22:24 momjian Exp $ */ %{ @@ -117,6 +117,7 @@ ProcessConfigFile(GucContext context) { int elevel, i; struct name_value_pair *item, *head, *tail; + char *env; bool *apply_list = NULL; int varcount = 0; @@ -183,6 +184,59 @@ ProcessConfigFile(GucContext context) set_config_option(item->name, item->value, context, PGC_S_FILE, false, true); + if (context == PGC_SIGHUP) + { + /* + * Revert all "untouched" options with reset source PGC_S_FILE to + * default/boot value. + */ + for (i = 0; i < num_guc_variables; i++) + { + struct config_generic *gconf = guc_variables[i]; + + if (gconf->reset_source == PGC_S_FILE && + !(gconf->status & GUC_IN_CONFFILE)) + { + if (gconf->context == PGC_BACKEND && IsUnderPostmaster) + ; /* Be silent. Does any body want message from each session? */ + else if (gconf->context == PGC_POSTMASTER) + ereport(elevel, + (errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM), + errmsg("parameter \"%s\" cannot be changed (commented) after server start; configuration file change ignored", + gconf->name))); + else if (set_config_option(gconf->name, NULL, context, + PGC_S_FILE, false, true)) + { + GucStack *stack; + + gconf->reset_source = PGC_S_DEFAULT; + + for (stack = gconf->stack; stack; stack = stack->prev) + if (stack->source == PGC_S_FILE) + stack->source = PGC_S_DEFAULT; + + ereport(elevel, + (errcode(ERRCODE_SUCCESSFUL_COMPLETION), + errmsg("configuration option %s returned to default value", gconf->name))); + } + } + gconf->status &= ~GUC_IN_CONFFILE; + } + + /* + * Revert to environment variable. PGPORT is ignored, because it cannot be + * set in running state. + */ + env = getenv("PGDATESTYLE"); + if (env != NULL) + set_config_option("datestyle", env, context, + PGC_S_ENV_VAR, false, true); + + env = getenv("PGCLIENTENCODING"); + if (env != NULL) + set_config_option("client_encoding", env, context, + PGC_S_ENV_VAR, false, true); + } cleanup_list: if (apply_list) |