@ -10,7 +10,7 @@
* Written by Peter Eisentraut < peter_e @ gmx . net > .
*
* IDENTIFICATION
* $ PostgreSQL : pgsql / src / backend / utils / misc / guc . c , v 1.239 2004 / 09 / 24 19 : 43 : 03 tgl Exp $
* $ PostgreSQL : pgsql / src / backend / utils / misc / guc . c , v 1.240 2004 / 10 / 08 01 : 36 : 35 tgl Exp $
*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*/
@ -20,6 +20,7 @@
# include <float.h>
# include <limits.h>
# include <unistd.h>
# include <sys/stat.h>
# include "utils/guc.h"
# include "utils/guc_tables.h"
@ -58,18 +59,13 @@
# include "utils/pg_locale.h"
# include "pgstat.h"
char * guc_pgdata ;
char * guc_hbafile ;
char * guc_identfile ;
char * external_pidfile ;
char * user_pgconfig = NULL ;
bool user_pgconfig_is_dir = false ;
# ifndef PG_KRB_SRVTAB
# define PG_KRB_SRVTAB ""
# endif
# define CONFIG_FILENAME "postgresql.conf"
# ifdef EXEC_BACKEND
# define CONFIG_EXEC_PARAMS "global / config_exec_params"
# endif
@ -118,7 +114,14 @@ static const char *assign_canonical_path(const char *newval, bool doit, GucSourc
/*
* Debugging options
* These are initialized by SelectConfigFiles .
*/
char * ConfigDir = NULL ;
char * ConfigFileName = NULL ;
/*
* GUC option variables that are exported from this module
*/
# ifdef USE_ASSERT_CHECKING
bool assert_enabled = true ;
@ -151,6 +154,10 @@ int client_min_messages = NOTICE;
int log_min_duration_statement = - 1 ;
char * guc_hbafile ;
char * guc_identfile ;
char * external_pidfile ;
/*
* These variables are all dummies that don ' t do anything , except in some
@ -176,6 +183,7 @@ static char *server_encoding_string;
static char * server_version_string ;
static char * timezone_string ;
static char * XactIsoLevel_string ;
static char * guc_pgdata ;
static char * custom_variable_classes ;
static int max_function_args ;
static int max_index_keys ;
@ -231,6 +239,8 @@ const char *const config_group_names[] =
{
/* UNGROUPED */
gettext_noop ( " Ungrouped " ) ,
/* FILE_LOCATIONS */
gettext_noop ( " File Locations " ) ,
/* CONN_AUTH */
gettext_noop ( " Connections and Authentication " ) ,
/* CONN_AUTH_SETTINGS */
@ -291,10 +301,12 @@ const char *const config_group_names[] =
gettext_noop ( " Version and Platform Compatibility / Previous PostgreSQL Versions " ) ,
/* COMPAT_OPTIONS_CLIENT */
gettext_noop ( " Version and Platform Compatibility / Other Platforms and Clients " ) ,
/* PRESET_OPTIONS */
gettext_noop ( " Preset Options " ) ,
/* CUSTOM_OPTIONS */
gettext_noop ( " Customized Options " ) ,
/* DEVELOPER_OPTIONS */
gettext_noop ( " Developer Options " ) ,
/* COMPILE_OPTIONS */
gettext_noop ( " Compiled-in Options " ) ,
/* help_config wants this array to be null-terminated */
NULL
} ;
@ -833,7 +845,7 @@ static struct config_bool ConfigureNamesBool[] =
# endif
{
{ " integer_datetimes " , PGC_INTERNAL , COMPILE _OPTIONS,
{ " integer_datetimes " , PGC_INTERNAL , PRESET _OPTIONS,
gettext_noop ( " Datetimes are integer based " ) ,
NULL ,
GUC_REPORT | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
@ -1282,7 +1294,7 @@ static struct config_int ConfigureNamesInt[] =
} ,
{
{ " max_function_args " , PGC_INTERNAL , COMPILE _OPTIONS,
{ " max_function_args " , PGC_INTERNAL , PRESET _OPTIONS,
gettext_noop ( " Shows the maximum number of function arguments " ) ,
NULL ,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
@ -1292,7 +1304,7 @@ static struct config_int ConfigureNamesInt[] =
} ,
{
{ " max_index_keys " , PGC_INTERNAL , COMPILE _OPTIONS,
{ " max_index_keys " , PGC_INTERNAL , PRESET _OPTIONS,
gettext_noop ( " Shows the maximum number of index keys " ) ,
NULL ,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
@ -1302,7 +1314,7 @@ static struct config_int ConfigureNamesInt[] =
} ,
{
{ " max_identifier_length " , PGC_INTERNAL , COMPILE _OPTIONS,
{ " max_identifier_length " , PGC_INTERNAL , PRESET _OPTIONS,
gettext_noop ( " Shows the maximum identifier length " ) ,
NULL ,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
@ -1312,7 +1324,7 @@ static struct config_int ConfigureNamesInt[] =
} ,
{
{ " block_size " , PGC_INTERNAL , COMPILE _OPTIONS,
{ " block_size " , PGC_INTERNAL , PRESET _OPTIONS,
gettext_noop ( " Shows size of a disk block " ) ,
NULL ,
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
@ -1640,7 +1652,7 @@ static struct config_string ConfigureNamesString[] =
{
/* Can't be set in postgresql.conf */
{ " server_version " , PGC_INTERNAL , UNGROUPED ,
{ " server_version " , PGC_INTERNAL , PRESET_OPTIONS ,
gettext_noop ( " Shows the server version. " ) ,
NULL ,
GUC_REPORT | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
@ -1777,25 +1789,37 @@ static struct config_string ConfigureNamesString[] =
} ,
{
{ " pgdata " , PGC_POSTMASTER , 0 , gettext_noop ( " Sets the location of the data directory " ) , NULL } ,
{ " pgdata " , PGC_POSTMASTER , FILE_LOCATIONS ,
gettext_noop ( " Sets the location of the data directory " ) ,
NULL
} ,
& guc_pgdata ,
NULL , assign_canonical_path , NULL
} ,
{
{ " hba_conf " , PGC_SIGHUP , 0 , gettext_noop ( " Sets the location of the \" hba \" configuration file " ) , NULL } ,
{ " hba_conf " , PGC_SIGHUP , FILE_LOCATIONS ,
gettext_noop ( " Sets the location of the \" hba \" configuration file " ) ,
NULL
} ,
& guc_hbafile ,
NULL , assign_canonical_path , NULL
} ,
{
{ " ident_conf " , PGC_SIGHUP , 0 , gettext_noop ( " Sets the location of the \" ident \" configuration file " ) , NULL } ,
{ " ident_conf " , PGC_SIGHUP , FILE_LOCATIONS ,
gettext_noop ( " Sets the location of the \" ident \" configuration file " ) ,
NULL
} ,
& guc_identfile ,
NULL , assign_canonical_path , NULL
} ,
{
{ " external_pidfile " , PGC_POSTMASTER , 0 , gettext_noop ( " Writes the postmaster PID to the specified file " ) , NULL } ,
{ " external_pidfile " , PGC_POSTMASTER , FILE_LOCATIONS ,
gettext_noop ( " Writes the postmaster PID to the specified file " ) ,
NULL
} ,
& external_pidfile ,
NULL , assign_canonical_path , NULL
} ,
@ -2247,6 +2271,9 @@ guc_name_compare(const char *namea, const char *nameb)
/*
* Initialize GUC options during program startup .
*
* Note that we cannot read the config file yet , since we have not yet
* processed command - line switches .
*/
void
InitializeGUCOptions ( void )
@ -2412,6 +2439,102 @@ InitializeGUCOptions(void)
}
/*
* Select the configuration files and data directory to be used , and
* do the initial read of postgresql . conf .
*
* This is called after processing command - line switches .
* userDoption is the - D switch value if any ( NULL if unspecified ) .
* progname is just for use in error messages .
*
* Returns true on success ; on failure , prints a suitable error message
* to stderr and returns false .
*/
bool
SelectConfigFiles ( const char * userDoption , const char * progname )
{
char * Doption ;
struct stat stat_buf ;
/* If user did not specify -D, it defaults to $PGDATA */
if ( ! userDoption )
userDoption = getenv ( " PGDATA " ) ;
/* If no PGDATA either, we are completely lost */
if ( ! userDoption )
{
write_stderr ( " %s does not know where to find the database system data. \n "
" You must specify the -D invocation option or set the "
" PGDATA environment variable. \n " ,
progname ) ;
return false ;
}
/* Get a writable copy and canonicalize the path */
Doption = guc_strdup ( FATAL , userDoption ) ;
canonicalize_path ( Doption ) ;
/*
* If it is a directory , point ConfigDir to it , and expect to
* find postgresql . conf within . Otherwise it had better be
* the actual config file , and the file had better set " pgdata " .
*/
if ( stat ( Doption , & stat_buf ) = = 0 & & S_ISDIR ( stat_buf . st_mode ) )
{
ConfigDir = Doption ;
ConfigFileName = guc_malloc ( FATAL ,
strlen ( ConfigDir ) + strlen ( CONFIG_FILENAME ) + 2 ) ;
sprintf ( ConfigFileName , " %s/%s " , ConfigDir , CONFIG_FILENAME ) ;
}
else
{
ConfigFileName = Doption ;
}
if ( stat ( ConfigFileName , & stat_buf ) ! = 0 )
{
write_stderr ( " %s cannot access the data directory or configuration file \" %s \" : %s \n " ,
progname , ConfigFileName , strerror ( errno ) ) ;
return false ;
}
ProcessConfigFile ( PGC_POSTMASTER ) ;
/*
* If the config file specified pgdata , use that as DataDir ;
* otherwise use ConfigDir ( the original Doption ) if set ;
* else punt .
*
* Note : SetDataDir will copy and canonicalize its argument ,
* so we don ' t have to .
*/
if ( guc_pgdata )
SetDataDir ( guc_pgdata ) ;
else if ( ConfigDir )
SetDataDir ( ConfigDir ) ;
else
{
write_stderr ( " %s does not know where to find the database system data. \n "
" This should be specified as \" pgdata \" in \" %s \" . \n " ,
progname , ConfigFileName ) ;
return false ;
}
/*
* Set ConfigDir as DataDir unless we had another value ( which is to say ,
* Doption pointed to a directory ) . This determines the default location
* of secondary configuration files that will be read later .
*/
if ( ! ConfigDir )
ConfigDir = DataDir ;
/* If timezone is not set, determine what the OS uses */
pg_timezone_initialize ( ) ;
return true ;
}
/*
* Reset all options to their saved default values ( implements RESET ALL )
*/
Tom Lane
21 years ago