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Revert (again) GUC patch to return commented fields to their default

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values, due to concern about the patch.
This commit is contained in:
Bruce Momjian
2006-08-14 02:27:27 +00:00
parent 3648147401
commit f058451871
4 changed files with 328 additions and 599 deletions
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124
src/backend/utils/misc/guc-file.l
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@ -4,7 +4,7 @@
*
* Copyright (c) 2000-2006, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/utils/misc/guc-file.l,v 1.44 2006/08/13 02:22:24 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/misc/guc-file.l,v 1.45 2006/08/14 02:27:26 momjian Exp $
*/
%{
@ -50,8 +50,7 @@ int GUC_yylex(void);
static bool ParseConfigFile(const char *config_file, const char *calling_file,
int depth, GucContext context, int elevel,
struct name_value_pair **head_p,
struct name_value_pair **tail_p,
int *varcount);
struct name_value_pair **tail_p);
static void free_name_value_list(struct name_value_pair * list);
static char *GUC_scanstr(const char *s);
@ -115,11 +114,8 @@ STRING \'([^'\\\n]|\\.|\'\')*\'
void
ProcessConfigFile(GucContext context)
{
int elevel, i;
int elevel;
struct name_value_pair *item, *head, *tail;
char *env;
bool *apply_list = NULL;
int varcount = 0;
Assert(context == PGC_POSTMASTER || context == PGC_SIGHUP);
@ -138,109 +134,25 @@ ProcessConfigFile(GucContext context)
if (!ParseConfigFile(ConfigFileName, NULL,
0, context, elevel,
&head, &tail, &varcount))
&head, &tail))
goto cleanup_list;
/* Can we allocate memory here, what about leaving here prematurely? */
apply_list = (bool *) palloc(sizeof(bool) * varcount);
/* Check if all options are valid */
for (item = head, i = 0; item; item = item->next, i++)
for (item = head; item; item = item->next)
{
bool isEqual, isContextOk;
if (!verify_config_option(item->name, item->value, context,
PGC_S_FILE, &isEqual, &isContextOk))
{
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("configuration file is invalid")));
if (!set_config_option(item->name, item->value, context,
PGC_S_FILE, false, false))
goto cleanup_list;
}
if (isContextOk == false)
{
apply_list[i] = false;
if (context == PGC_SIGHUP)
{
if (isEqual == false)
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed after server start; configuration file change ignored",
item->name)));
}
else
/* if it is boot phase, context must be valid for all
* configuration item. */
goto cleanup_list;
}
else
apply_list[i] = true;
}
/* If we got here all the options checked out okay, so apply them. */
for (item = head, i = 0; item; item = item->next, i++)
if (apply_list[i])
set_config_option(item->name, item->value, context,
PGC_S_FILE, false, true);
if (context == PGC_SIGHUP)
for (item = head; item; item = item->next)
{
/*
* 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);
set_config_option(item->name, item->value, context,
PGC_S_FILE, false, true);
}
cleanup_list:
if (apply_list)
pfree(apply_list);
cleanup_list:
free_name_value_list(head);
}
@ -277,14 +189,13 @@ static bool
ParseConfigFile(const char *config_file, const char *calling_file,
int depth, GucContext context, int elevel,
struct name_value_pair **head_p,
struct name_value_pair **tail_p,
int *varcount)
struct name_value_pair **tail_p)
{
bool OK = true;
char abs_path[MAXPGPATH];
FILE *fp;
bool OK = true;
char abs_path[MAXPGPATH];
FILE *fp;
YY_BUFFER_STATE lex_buffer;
int token;
int token;
/*
* Reject too-deep include nesting depth. This is just a safety check
@ -378,7 +289,7 @@ ParseConfigFile(const char *config_file, const char *calling_file,
if (!ParseConfigFile(opt_value, config_file,
depth + 1, context, elevel,
head_p, tail_p, varcount))
head_p, tail_p))
{
pfree(opt_name);
pfree(opt_value);
@ -422,7 +333,6 @@ ParseConfigFile(const char *config_file, const char *calling_file,
else
(*tail_p)->next = item;
*tail_p = item;
(*varcount)++;
}
/* break out of loop if read EOF, else loop for next line */