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guc.c File Reference
#include "postgres.h"
#include <ctype.h>
#include <float.h>
#include <math.h>
#include <limits.h>
#include <unistd.h>
#include <sys/stat.h>
#include "access/commit_ts.h"
#include "access/gin.h"
#include "access/rmgr.h"
#include "access/transam.h"
#include "access/twophase.h"
#include "access/xact.h"
#include "access/xlog_internal.h"
#include "catalog/namespace.h"
#include "catalog/pg_authid.h"
#include "commands/async.h"
#include "commands/prepare.h"
#include "commands/user.h"
#include "commands/vacuum.h"
#include "commands/variable.h"
#include "commands/trigger.h"
#include "funcapi.h"
#include "libpq/auth.h"
#include "libpq/be-fsstubs.h"
#include "libpq/libpq.h"
#include "libpq/pqformat.h"
#include "miscadmin.h"
#include "optimizer/cost.h"
#include "optimizer/geqo.h"
#include "optimizer/paths.h"
#include "optimizer/planmain.h"
#include "parser/parse_expr.h"
#include "parser/parse_type.h"
#include "parser/parser.h"
#include "parser/scansup.h"
#include "pgstat.h"
#include "postmaster/autovacuum.h"
#include "postmaster/bgworker_internals.h"
#include "postmaster/bgwriter.h"
#include "postmaster/postmaster.h"
#include "postmaster/syslogger.h"
#include "postmaster/walwriter.h"
#include "replication/logicallauncher.h"
#include "replication/slot.h"
#include "replication/syncrep.h"
#include "replication/walreceiver.h"
#include "replication/walsender.h"
#include "storage/bufmgr.h"
#include "storage/dsm_impl.h"
#include "storage/standby.h"
#include "storage/fd.h"
#include "storage/pg_shmem.h"
#include "storage/proc.h"
#include "storage/predicate.h"
#include "tcop/tcopprot.h"
#include "tsearch/ts_cache.h"
#include "utils/builtins.h"
#include "utils/bytea.h"
#include "utils/guc_tables.h"
#include "utils/memutils.h"
#include "utils/pg_locale.h"
#include "utils/plancache.h"
#include "utils/portal.h"
#include "utils/ps_status.h"
#include "utils/rls.h"
#include "utils/snapmgr.h"
#include "utils/tzparser.h"
#include "utils/varlena.h"
#include "utils/xml.h"
#include "guc-file.c"
Include dependency graph for guc.c:

Go to the source code of this file.

Data Structures

struct  unit_conversion
 

Macros

#define PG_KRB_SRVTAB   ""
 
#define CONFIG_FILENAME   "postgresql.conf"
 
#define HBA_FILENAME   "pg_hba.conf"
 
#define IDENT_FILENAME   "pg_ident.conf"
 
#define REALTYPE_PRECISION   17
 
#define MAX_UNIT_LEN   3 /* length of longest recognized unit string */
 
#define newval   (newval_union.boolval)
 
#define newval   (newval_union.intval)
 
#define newval   (newval_union.realval)
 
#define newval   (newval_union.stringval)
 
#define newval   (newval_union.enumval)
 
#define NUM_PG_SETTINGS_ATTS   17
 
#define NUM_PG_FILE_SETTINGS_ATTS   7
 

Functions

static void do_serialize (char **destptr, Size *maxbytes, const char *fmt,...) pg_attribute_printf(3
 
static void static void set_config_sourcefile (const char *name, char *sourcefile, int sourceline)
 
static bool call_bool_check_hook (struct config_bool *conf, bool *newval, void **extra, GucSource source, int elevel)
 
static bool call_int_check_hook (struct config_int *conf, int *newval, void **extra, GucSource source, int elevel)
 
static bool call_real_check_hook (struct config_real *conf, double *newval, void **extra, GucSource source, int elevel)
 
static bool call_string_check_hook (struct config_string *conf, char **newval, void **extra, GucSource source, int elevel)
 
static bool call_enum_check_hook (struct config_enum *conf, int *newval, void **extra, GucSource source, int elevel)
 
static bool check_log_destination (char **newval, void **extra, GucSource source)
 
static void assign_log_destination (const char *newval, void *extra)
 
static bool check_wal_consistency_checking (char **newval, void **extra, GucSource source)
 
static void assign_wal_consistency_checking (const char *newval, void *extra)
 
static void assign_syslog_facility (int newval, void *extra)
 
static void assign_syslog_ident (const char *newval, void *extra)
 
static void assign_session_replication_role (int newval, void *extra)
 
static bool check_temp_buffers (int *newval, void **extra, GucSource source)
 
static bool check_bonjour (bool *newval, void **extra, GucSource source)
 
static bool check_ssl (bool *newval, void **extra, GucSource source)
 
static bool check_stage_log_stats (bool *newval, void **extra, GucSource source)
 
static bool check_log_stats (bool *newval, void **extra, GucSource source)
 
static bool check_canonical_path (char **newval, void **extra, GucSource source)
 
static bool check_timezone_abbreviations (char **newval, void **extra, GucSource source)
 
static void assign_timezone_abbreviations (const char *newval, void *extra)
 
static void pg_timezone_abbrev_initialize (void)
 
static const char * show_archive_command (void)
 
static void assign_tcp_keepalives_idle (int newval, void *extra)
 
static void assign_tcp_keepalives_interval (int newval, void *extra)
 
static void assign_tcp_keepalives_count (int newval, void *extra)
 
static const char * show_tcp_keepalives_idle (void)
 
static const char * show_tcp_keepalives_interval (void)
 
static const char * show_tcp_keepalives_count (void)
 
static bool check_maxconnections (int *newval, void **extra, GucSource source)
 
static bool check_max_worker_processes (int *newval, void **extra, GucSource source)
 
static bool check_autovacuum_max_workers (int *newval, void **extra, GucSource source)
 
static bool check_autovacuum_work_mem (int *newval, void **extra, GucSource source)
 
static bool check_effective_io_concurrency (int *newval, void **extra, GucSource source)
 
static void assign_effective_io_concurrency (int newval, void *extra)
 
static void assign_pgstat_temp_directory (const char *newval, void *extra)
 
static bool check_application_name (char **newval, void **extra, GucSource source)
 
static void assign_application_name (const char *newval, void *extra)
 
static bool check_cluster_name (char **newval, void **extra, GucSource source)
 
static const char * show_unix_socket_permissions (void)
 
static const char * show_log_file_mode (void)
 
static ConfigVariableProcessConfigFileInternal (GucContext context, bool applySettings, int elevel)
 
static int guc_var_compare (const void *a, const void *b)
 
static int guc_name_compare (const char *namea, const char *nameb)
 
static void InitializeGUCOptionsFromEnvironment (void)
 
static void InitializeOneGUCOption (struct config_generic *gconf)
 
static void push_old_value (struct config_generic *gconf, GucAction action)
 
static void ReportGUCOption (struct config_generic *record)
 
static void reapply_stacked_values (struct config_generic *variable, struct config_string *pHolder, GucStack *stack, const char *curvalue, GucContext curscontext, GucSource cursource)
 
static void ShowGUCConfigOption (const char *name, DestReceiver *dest)
 
static void ShowAllGUCConfig (DestReceiver *dest)
 
static char * _ShowOption (struct config_generic *record, bool use_units)
 
static bool validate_option_array_item (const char *name, const char *value, bool skipIfNoPermissions)
 
static void write_auto_conf_file (int fd, const char *filename, ConfigVariable *head_p)
 
static void replace_auto_config_value (ConfigVariable **head_p, ConfigVariable **tail_p, const char *name, const char *value)
 
static void * guc_malloc (int elevel, size_t size)
 
static void * guc_realloc (int elevel, void *old, size_t size)
 
static char * guc_strdup (int elevel, const char *src)
 
static bool string_field_used (struct config_string *conf, char *strval)
 
static void set_string_field (struct config_string *conf, char **field, char *newval)
 
static bool extra_field_used (struct config_generic *gconf, void *extra)
 
static void set_extra_field (struct config_generic *gconf, void **field, void *newval)
 
static void set_stack_value (struct config_generic *gconf, config_var_value *val)
 
static void discard_stack_value (struct config_generic *gconf, config_var_value *val)
 
struct config_generic ** get_guc_variables (void)
 
void build_guc_variables (void)
 
static bool add_guc_variable (struct config_generic *var, int elevel)
 
static struct config_genericadd_placeholder_variable (const char *name, int elevel)
 
static struct config_genericfind_option (const char *name, bool create_placeholders, int elevel)
 
void InitializeGUCOptions (void)
 
bool SelectConfigFiles (const char *userDoption, const char *progname)
 
void ResetAllOptions (void)
 
void AtStart_GUC (void)
 
int NewGUCNestLevel (void)
 
void AtEOXact_GUC (bool isCommit, int nestLevel)
 
void BeginReportingGUCOptions (void)
 
static bool convert_to_base_unit (int64 value, const char *unit, int base_unit, int64 *base_value)
 
static void convert_from_base_unit (int64 base_value, int base_unit, int64 *value, const char **unit)
 
bool parse_int (const char *value, int *result, int flags, const char **hintmsg)
 
bool parse_real (const char *value, double *result)
 
const char * config_enum_lookup_by_value (struct config_enum *record, int val)
 
bool config_enum_lookup_by_name (struct config_enum *record, const char *value, int *retval)
 
static char * config_enum_get_options (struct config_enum *record, const char *prefix, const char *suffix, const char *separator)
 
static bool parse_and_validate_value (struct config_generic *record, const char *name, const char *value, GucSource source, int elevel, union config_var_val *newval, void **newextra)
 
int set_config_option (const char *name, const char *value, GucContext context, GucSource source, GucAction action, bool changeVal, int elevel, bool is_reload)
 
void SetConfigOption (const char *name, const char *value, GucContext context, GucSource source)
 
const char * GetConfigOption (const char *name, bool missing_ok, bool restrict_superuser)
 
const char * GetConfigOptionResetString (const char *name)
 
static char * flatten_set_variable_args (const char *name, List *args)
 
void AlterSystemSetConfigFile (AlterSystemStmt *altersysstmt)
 
void ExecSetVariableStmt (VariableSetStmt *stmt, bool isTopLevel)
 
char * ExtractSetVariableArgs (VariableSetStmt *stmt)
 
void SetPGVariable (const char *name, List *args, bool is_local)
 
Datum set_config_by_name (PG_FUNCTION_ARGS)
 
static struct config_genericinit_custom_variable (const char *name, const char *short_desc, const char *long_desc, GucContext context, int flags, enum config_type type, size_t sz)
 
static void define_custom_variable (struct config_generic *variable)
 
void DefineCustomBoolVariable (const char *name, const char *short_desc, const char *long_desc, bool *valueAddr, bool bootValue, GucContext context, int flags, GucBoolCheckHook check_hook, GucBoolAssignHook assign_hook, GucShowHook show_hook)
 
void DefineCustomIntVariable (const char *name, const char *short_desc, const char *long_desc, int *valueAddr, int bootValue, int minValue, int maxValue, GucContext context, int flags, GucIntCheckHook check_hook, GucIntAssignHook assign_hook, GucShowHook show_hook)
 
void DefineCustomRealVariable (const char *name, const char *short_desc, const char *long_desc, double *valueAddr, double bootValue, double minValue, double maxValue, GucContext context, int flags, GucRealCheckHook check_hook, GucRealAssignHook assign_hook, GucShowHook show_hook)
 
void DefineCustomStringVariable (const char *name, const char *short_desc, const char *long_desc, char **valueAddr, const char *bootValue, GucContext context, int flags, GucStringCheckHook check_hook, GucStringAssignHook assign_hook, GucShowHook show_hook)
 
void DefineCustomEnumVariable (const char *name, const char *short_desc, const char *long_desc, int *valueAddr, int bootValue, const struct config_enum_entry *options, GucContext context, int flags, GucEnumCheckHook check_hook, GucEnumAssignHook assign_hook, GucShowHook show_hook)
 
void EmitWarningsOnPlaceholders (const char *className)
 
void GetPGVariable (const char *name, DestReceiver *dest)
 
TupleDesc GetPGVariableResultDesc (const char *name)
 
char * GetConfigOptionByName (const char *name, const char **varname, bool missing_ok)
 
void GetConfigOptionByNum (int varnum, const char **values, bool *noshow)
 
int GetNumConfigOptions (void)
 
Datum show_config_by_name (PG_FUNCTION_ARGS)
 
Datum show_config_by_name_missing_ok (PG_FUNCTION_ARGS)
 
Datum show_all_settings (PG_FUNCTION_ARGS)
 
Datum show_all_file_settings (PG_FUNCTION_ARGS)
 
static bool can_skip_gucvar (struct config_generic *gconf)
 
static Size estimate_variable_size (struct config_generic *gconf)
 
Size EstimateGUCStateSpace (void)
 
static void do_serialize_binary (char **destptr, Size *maxbytes, void *val, Size valsize)
 
static void serialize_variable (char **destptr, Size *maxbytes, struct config_generic *gconf)
 
void SerializeGUCState (Size maxsize, char *start_address)
 
static char * read_gucstate (char **srcptr, char *srcend)
 
static void read_gucstate_binary (char **srcptr, char *srcend, void *dest, Size size)
 
void RestoreGUCState (void *gucstate)
 
void ParseLongOption (const char *string, char **name, char **value)
 
void ProcessGUCArray (ArrayType *array, GucContext context, GucSource source, GucAction action)
 
ArrayTypeGUCArrayAdd (ArrayType *array, const char *name, const char *value)
 
ArrayTypeGUCArrayDelete (ArrayType *array, const char *name)
 
ArrayTypeGUCArrayReset (ArrayType *array)
 
void GUC_check_errcode (int sqlerrcode)
 

Variables

bool Log_disconnections
 
int CommitDelay
 
int CommitSiblings
 
char * default_tablespace
 
char * temp_tablespaces
 
bool ignore_checksum_failure
 
bool synchronize_seqscans
 
static int GUC_check_errcode_value
 
char * GUC_check_errmsg_string
 
char * GUC_check_errdetail_string
 
char * GUC_check_errhint_string
 
static int syslog_facility = 0
 
static const struct
config_enum_entry 
bytea_output_options []
 
static const struct
config_enum_entry 
client_message_level_options []
 
static const struct
config_enum_entry 
server_message_level_options []
 
static const struct
config_enum_entry 
intervalstyle_options []
 
static const struct
config_enum_entry 
log_error_verbosity_options []
 
static const struct
config_enum_entry 
log_statement_options []
 
static const struct
config_enum_entry 
isolation_level_options []
 
static const struct
config_enum_entry 
session_replication_role_options []
 
static const struct
config_enum_entry 
syslog_facility_options []
 
static const struct
config_enum_entry 
track_function_options []
 
static const struct
config_enum_entry 
xmlbinary_options []
 
static const struct
config_enum_entry 
xmloption_options []
 
static const struct
config_enum_entry 
backslash_quote_options []
 
static const struct
config_enum_entry 
constraint_exclusion_options []
 
static const struct
config_enum_entry 
synchronous_commit_options []
 
static const struct
config_enum_entry 
huge_pages_options []
 
static const struct
config_enum_entry 
force_parallel_mode_options []
 
static const struct
config_enum_entry 
password_encryption_options []
 
const struct config_enum_entry wal_level_options []
 
const struct config_enum_entry archive_mode_options []
 
const struct config_enum_entry sync_method_options []
 
const struct config_enum_entry dynamic_shared_memory_options []
 
bool log_duration = false
 
bool Debug_print_plan = false
 
bool Debug_print_parse = false
 
bool Debug_print_rewritten = false
 
bool Debug_pretty_print = true
 
bool log_parser_stats = false
 
bool log_planner_stats = false
 
bool log_executor_stats = false
 
bool log_statement_stats = false
 
bool log_btree_build_stats = false
 
char * event_source
 
bool row_security
 
bool check_function_bodies = true
 
bool default_with_oids = false
 
int log_min_error_statement = ERROR
 
int log_min_messages = WARNING
 
int client_min_messages = NOTICE
 
int log_min_duration_statement = -1
 
int log_temp_files = -1
 
int trace_recovery_messages = LOG
 
int temp_file_limit = -1
 
int num_temp_buffers = 1024
 
char * cluster_name = ""
 
char * ConfigFileName
 
char * HbaFileName
 
char * IdentFileName
 
char * external_pid_file
 
char * pgstat_temp_directory
 
char * application_name
 
int tcp_keepalives_idle
 
int tcp_keepalives_interval
 
int tcp_keepalives_count
 
int ssl_renegotiation_limit
 
int huge_pages
 
static char * syslog_ident_str
 
static bool session_auth_is_superuser
 
static double phony_random_seed
 
static char * client_encoding_string
 
static char * datestyle_string
 
static char * locale_collate
 
static char * locale_ctype
 
static char * server_encoding_string
 
static char * server_version_string
 
static int server_version_num
 
static char * timezone_string
 
static char * log_timezone_string
 
static char * timezone_abbreviations_string
 
static char * XactIsoLevel_string
 
static char * data_directory
 
static char * session_authorization_string
 
static int max_function_args
 
static int max_index_keys
 
static int max_identifier_length
 
static int block_size
 
static int segment_size
 
static int wal_block_size
 
static bool data_checksums
 
static int wal_segment_size
 
static bool integer_datetimes
 
static bool assert_enabled
 
char * role_string
 
const char *const GucContext_Names []
 
const char *const GucSource_Names []
 
const char *const config_group_names []
 
const char *const config_type_names []
 
static const char * memory_units_hint = gettext_noop("Valid units for this parameter are \"kB\", \"MB\", \"GB\", and \"TB\".")
 
static const unit_conversion memory_unit_conversion_table []
 
static const char * time_units_hint = gettext_noop("Valid units for this parameter are \"ms\", \"s\", \"min\", \"h\", and \"d\".")
 
static const unit_conversion time_unit_conversion_table []
 
static struct config_bool ConfigureNamesBool []
 
static struct config_int ConfigureNamesInt []
 
static struct config_real ConfigureNamesReal []
 
static struct config_string ConfigureNamesString []
 
static struct config_enum ConfigureNamesEnum []
 
static const char *const map_old_guc_names []
 
static struct config_generic ** guc_variables
 
static int num_guc_variables
 
static int size_guc_variables
 
static bool guc_dirty
 
static bool reporting_enabled
 
static int GUCNestLevel = 0
 

Macro Definition Documentation

#define CONFIG_FILENAME   "postgresql.conf"

Definition at line 97 of file guc.c.

Referenced by SelectConfigFiles().

#define HBA_FILENAME   "pg_hba.conf"

Definition at line 98 of file guc.c.

Referenced by SelectConfigFiles().

#define IDENT_FILENAME   "pg_ident.conf"

Definition at line 99 of file guc.c.

Referenced by SelectConfigFiles().

#define MAX_UNIT_LEN   3 /* length of longest recognized unit string */

Definition at line 698 of file guc.c.

Referenced by parse_int().

#define newval   (newval_union.intval)
#define newval   (newval_union.realval)
#define newval   (newval_union.stringval)
#define newval   (newval_union.enumval)
#define NUM_PG_FILE_SETTINGS_ATTS   7

Referenced by show_all_file_settings().

#define NUM_PG_SETTINGS_ATTS   17

Definition at line 8386 of file guc.c.

Referenced by show_all_settings().

#define PG_KRB_SRVTAB   ""

Definition at line 94 of file guc.c.

#define REALTYPE_PRECISION   17

Definition at line 110 of file guc.c.

Referenced by estimate_variable_size(), and serialize_variable().

Function Documentation

static char * _ShowOption ( struct config_generic record,
bool  use_units 
)
static

Definition at line 8633 of file guc.c.

References buffer, config_enum_lookup_by_value(), convert_from_base_unit(), config_generic::flags, GUC_UNIT, INT64_FORMAT, PGC_BOOL, PGC_ENUM, PGC_INT, PGC_REAL, PGC_STRING, pstrdup(), result, config_bool::show_hook, config_int::show_hook, config_real::show_hook, config_string::show_hook, config_enum::show_hook, snprintf(), val, config_bool::variable, config_int::variable, config_real::variable, config_string::variable, config_enum::variable, and config_generic::vartype.

Referenced by GetConfigOptionByName(), GetConfigOptionByNum(), ReportGUCOption(), and ShowAllGUCConfig().

8634 {
8635  char buffer[256];
8636  const char *val;
8637 
8638  switch (record->vartype)
8639  {
8640  case PGC_BOOL:
8641  {
8642  struct config_bool *conf = (struct config_bool *) record;
8643 
8644  if (conf->show_hook)
8645  val = (*conf->show_hook) ();
8646  else
8647  val = *conf->variable ? "on" : "off";
8648  }
8649  break;
8650 
8651  case PGC_INT:
8652  {
8653  struct config_int *conf = (struct config_int *) record;
8654 
8655  if (conf->show_hook)
8656  val = (*conf->show_hook) ();
8657  else
8658  {
8659  /*
8660  * Use int64 arithmetic to avoid overflows in units
8661  * conversion.
8662  */
8663  int64 result = *conf->variable;
8664  const char *unit;
8665 
8666  if (use_units && result > 0 && (record->flags & GUC_UNIT))
8667  {
8668  convert_from_base_unit(result, record->flags & GUC_UNIT,
8669  &result, &unit);
8670  }
8671  else
8672  unit = "";
8673 
8674  snprintf(buffer, sizeof(buffer), INT64_FORMAT "%s",
8675  result, unit);
8676  val = buffer;
8677  }
8678  }
8679  break;
8680 
8681  case PGC_REAL:
8682  {
8683  struct config_real *conf = (struct config_real *) record;
8684 
8685  if (conf->show_hook)
8686  val = (*conf->show_hook) ();
8687  else
8688  {
8689  snprintf(buffer, sizeof(buffer), "%g",
8690  *conf->variable);
8691  val = buffer;
8692  }
8693  }
8694  break;
8695 
8696  case PGC_STRING:
8697  {
8698  struct config_string *conf = (struct config_string *) record;
8699 
8700  if (conf->show_hook)
8701  val = (*conf->show_hook) ();
8702  else if (*conf->variable && **conf->variable)
8703  val = *conf->variable;
8704  else
8705  val = "";
8706  }
8707  break;
8708 
8709  case PGC_ENUM:
8710  {
8711  struct config_enum *conf = (struct config_enum *) record;
8712 
8713  if (conf->show_hook)
8714  val = (*conf->show_hook) ();
8715  else
8716  val = config_enum_lookup_by_value(conf, *conf->variable);
8717  }
8718  break;
8719 
8720  default:
8721  /* just to keep compiler quiet */
8722  val = "???";
8723  break;
8724  }
8725 
8726  return pstrdup(val);
8727 }
char ** variable
Definition: guc_tables.h:227
char * pstrdup(const char *in)
Definition: mcxt.c:1077
bool * variable
Definition: guc_tables.h:181
const char * config_enum_lookup_by_value(struct config_enum *record, int val)
Definition: guc.c:5617
return result
Definition: formatting.c:1633
int snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3
#define GUC_UNIT
Definition: guc.h:229
GucShowHook show_hook
Definition: guc_tables.h:201
int * variable
Definition: guc_tables.h:195
int * variable
Definition: guc_tables.h:241
GucShowHook show_hook
Definition: guc_tables.h:231
GucShowHook show_hook
Definition: guc_tables.h:217
double * variable
Definition: guc_tables.h:211
enum config_type vartype
Definition: guc_tables.h:153
GucShowHook show_hook
Definition: guc_tables.h:246
GucShowHook show_hook
Definition: guc_tables.h:185
WalTimeSample buffer[LAG_TRACKER_BUFFER_SIZE]
Definition: walsender.c:214
#define INT64_FORMAT
Definition: c.h:315
static void convert_from_base_unit(int64 base_value, int base_unit, int64 *value, const char **unit)
Definition: guc.c:5445
long val
Definition: informix.c:689
static bool add_guc_variable ( struct config_generic var,
int  elevel 
)
static

Definition at line 4286 of file guc.c.

References guc_malloc(), guc_realloc(), guc_var_compare(), NULL, and qsort.

Referenced by add_placeholder_variable(), and define_custom_variable().

4287 {
4289  {
4290  /*
4291  * Increase the vector by 25%
4292  */
4293  int size_vars = size_guc_variables + size_guc_variables / 4;
4294  struct config_generic **guc_vars;
4295 
4296  if (size_vars == 0)
4297  {
4298  size_vars = 100;
4299  guc_vars = (struct config_generic **)
4300  guc_malloc(elevel, size_vars * sizeof(struct config_generic *));
4301  }
4302  else
4303  {
4304  guc_vars = (struct config_generic **)
4305  guc_realloc(elevel, guc_variables, size_vars * sizeof(struct config_generic *));
4306  }
4307 
4308  if (guc_vars == NULL)
4309  return false; /* out of memory */
4310 
4311  guc_variables = guc_vars;
4312  size_guc_variables = size_vars;
4313  }
4316  sizeof(struct config_generic *), guc_var_compare);
4317  return true;
4318 }
static int guc_var_compare(const void *a, const void *b)
Definition: guc.c:4421
static int num_guc_variables
Definition: guc.c:3938
static void * guc_realloc(int elevel, void *old, size_t size)
Definition: guc.c:3992
static struct config_generic ** guc_variables
Definition: guc.c:3935
static int size_guc_variables
Definition: guc.c:3941
static int elevel
Definition: vacuumlazy.c:136
#define NULL
Definition: c.h:229
#define qsort(a, b, c, d)
Definition: port.h:443
static void * guc_malloc(int elevel, size_t size)
Definition: guc.c:3976
static struct config_generic* add_placeholder_variable ( const char *  name,
int  elevel 
)
static

Definition at line 4324 of file guc.c.

References add_guc_variable(), config_generic::context, CUSTOM_OPTIONS, config_generic::flags, free, config_string::gen, config_generic::group, GUC_CUSTOM_PLACEHOLDER, guc_malloc(), GUC_NO_SHOW_ALL, GUC_NOT_IN_SAMPLE, guc_strdup(), config_generic::name, NULL, PGC_STRING, PGC_USERSET, config_generic::short_desc, config_string::variable, and config_generic::vartype.

Referenced by find_option().

4325 {
4326  size_t sz = sizeof(struct config_string) + sizeof(char *);
4327  struct config_string *var;
4328  struct config_generic *gen;
4329 
4330  var = (struct config_string *) guc_malloc(elevel, sz);
4331  if (var == NULL)
4332  return NULL;
4333  memset(var, 0, sz);
4334  gen = &var->gen;
4335 
4336  gen->name = guc_strdup(elevel, name);
4337  if (gen->name == NULL)
4338  {
4339  free(var);
4340  return NULL;
4341  }
4342 
4343  gen->context = PGC_USERSET;
4344  gen->group = CUSTOM_OPTIONS;
4345  gen->short_desc = "GUC placeholder variable";
4347  gen->vartype = PGC_STRING;
4348 
4349  /*
4350  * The char* is allocated at the end of the struct since we have no
4351  * 'static' place to point to. Note that the current value, as well as
4352  * the boot and reset values, start out NULL.
4353  */
4354  var->variable = (char **) (var + 1);
4355 
4356  if (!add_guc_variable((struct config_generic *) var, elevel))
4357  {
4358  free((void *) gen->name);
4359  free(var);
4360  return NULL;
4361  }
4362 
4363  return gen;
4364 }
char ** variable
Definition: guc_tables.h:227
const char * name
Definition: guc_tables.h:146
const char * short_desc
Definition: guc_tables.h:149
static char * guc_strdup(int elevel, const char *src)
Definition: guc.c:4008
#define GUC_NO_SHOW_ALL
Definition: guc.h:206
#define GUC_NOT_IN_SAMPLE
Definition: guc.h:209
enum config_type vartype
Definition: guc_tables.h:153
static int elevel
Definition: vacuumlazy.c:136
struct config_generic gen
Definition: guc_tables.h:225
#define free(a)
Definition: header.h:65
#define NULL
Definition: c.h:229
#define GUC_CUSTOM_PLACEHOLDER
Definition: guc.h:211
const char * name
Definition: encode.c:521
enum config_group group
Definition: guc_tables.h:148
static void * guc_malloc(int elevel, size_t size)
Definition: guc.c:3976
GucContext context
Definition: guc_tables.h:147
static bool add_guc_variable(struct config_generic *var, int elevel)
Definition: guc.c:4286
void AlterSystemSetConfigFile ( AlterSystemStmt altersysstmt)

Definition at line 7070 of file guc.c.

References AllocateFile(), BasicOpenFile(), close, config_generic::context, durable_rename(), elog, ereport, errcode(), errcode_for_file_access(), errmsg(), ERROR, ExtractSetVariableArgs(), find_option(), config_generic::flags, free, FreeConfigVariables(), FreeFile(), GUC_DISALLOW_IN_AUTO_FILE, GUC_DISALLOW_IN_FILE, infile(), VariableSetStmt::kind, LOG, LW_EXCLUSIVE, LWLockAcquire(), LWLockRelease(), MAXPGPATH, name, VariableSetStmt::name, NULL, parse_and_validate_value(), ParseConfigFp(), PG_AUTOCONF_FILENAME, PG_CATCH, PG_END_TRY, PG_RE_THROW, PG_TRY, PGC_INTERNAL, PGC_S_FILE, PGC_STRING, replace_auto_config_value(), AlterSystemStmt::setstmt, snprintf(), config_var_val::stringval, superuser(), unlink(), value, VAR_RESET, VAR_RESET_ALL, VAR_SET_DEFAULT, VAR_SET_VALUE, config_generic::vartype, and write_auto_conf_file().

Referenced by standard_ProcessUtility().

7071 {
7072  char *name;
7073  char *value;
7074  bool resetall = false;
7075  ConfigVariable *head = NULL;
7076  ConfigVariable *tail = NULL;
7077  volatile int Tmpfd;
7078  char AutoConfFileName[MAXPGPATH];
7079  char AutoConfTmpFileName[MAXPGPATH];
7080 
7081  if (!superuser())
7082  ereport(ERROR,
7083  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
7084  (errmsg("must be superuser to execute ALTER SYSTEM command"))));
7085 
7086  /*
7087  * Extract statement arguments
7088  */
7089  name = altersysstmt->setstmt->name;
7090 
7091  switch (altersysstmt->setstmt->kind)
7092  {
7093  case VAR_SET_VALUE:
7094  value = ExtractSetVariableArgs(altersysstmt->setstmt);
7095  break;
7096 
7097  case VAR_SET_DEFAULT:
7098  case VAR_RESET:
7099  value = NULL;
7100  break;
7101 
7102  case VAR_RESET_ALL:
7103  value = NULL;
7104  resetall = true;
7105  break;
7106 
7107  default:
7108  elog(ERROR, "unrecognized alter system stmt type: %d",
7109  altersysstmt->setstmt->kind);
7110  break;
7111  }
7112 
7113  /*
7114  * Unless it's RESET_ALL, validate the target variable and value
7115  */
7116  if (!resetall)
7117  {
7118  struct config_generic *record;
7119 
7120  record = find_option(name, false, ERROR);
7121  if (record == NULL)
7122  ereport(ERROR,
7123  (errcode(ERRCODE_UNDEFINED_OBJECT),
7124  errmsg("unrecognized configuration parameter \"%s\"",
7125  name)));
7126 
7127  /*
7128  * Don't allow parameters that can't be set in configuration files to
7129  * be set in PG_AUTOCONF_FILENAME file.
7130  */
7131  if ((record->context == PGC_INTERNAL) ||
7132  (record->flags & GUC_DISALLOW_IN_FILE) ||
7133  (record->flags & GUC_DISALLOW_IN_AUTO_FILE))
7134  ereport(ERROR,
7135  (errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
7136  errmsg("parameter \"%s\" cannot be changed",
7137  name)));
7138 
7139  /*
7140  * If a value is specified, verify that it's sane.
7141  */
7142  if (value)
7143  {
7144  union config_var_val newval;
7145  void *newextra = NULL;
7146 
7147  /* Check that it's acceptable for the indicated parameter */
7148  if (!parse_and_validate_value(record, name, value,
7149  PGC_S_FILE, ERROR,
7150  &newval, &newextra))
7151  ereport(ERROR,
7152  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
7153  errmsg("invalid value for parameter \"%s\": \"%s\"",
7154  name, value)));
7155 
7156  if (record->vartype == PGC_STRING && newval.stringval != NULL)
7157  free(newval.stringval);
7158  if (newextra)
7159  free(newextra);
7160 
7161  /*
7162  * We must also reject values containing newlines, because the
7163  * grammar for config files doesn't support embedded newlines in
7164  * string literals.
7165  */
7166  if (strchr(value, '\n'))
7167  ereport(ERROR,
7168  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
7169  errmsg("parameter value for ALTER SYSTEM must not contain a newline")));
7170  }
7171  }
7172 
7173  /*
7174  * PG_AUTOCONF_FILENAME and its corresponding temporary file are always in
7175  * the data directory, so we can reference them by simple relative paths.
7176  */
7177  snprintf(AutoConfFileName, sizeof(AutoConfFileName), "%s",
7179  snprintf(AutoConfTmpFileName, sizeof(AutoConfTmpFileName), "%s.%s",
7180  AutoConfFileName,
7181  "tmp");
7182 
7183  /*
7184  * Only one backend is allowed to operate on PG_AUTOCONF_FILENAME at a
7185  * time. Use AutoFileLock to ensure that. We must hold the lock while
7186  * reading the old file contents.
7187  */
7188  LWLockAcquire(AutoFileLock, LW_EXCLUSIVE);
7189 
7190  /*
7191  * If we're going to reset everything, then no need to open or parse the
7192  * old file. We'll just write out an empty list.
7193  */
7194  if (!resetall)
7195  {
7196  struct stat st;
7197 
7198  if (stat(AutoConfFileName, &st) == 0)
7199  {
7200  /* open old file PG_AUTOCONF_FILENAME */
7201  FILE *infile;
7202 
7203  infile = AllocateFile(AutoConfFileName, "r");
7204  if (infile == NULL)
7205  ereport(ERROR,
7207  errmsg("could not open file \"%s\": %m",
7208  AutoConfFileName)));
7209 
7210  /* parse it */
7211  if (!ParseConfigFp(infile, AutoConfFileName, 0, LOG, &head, &tail))
7212  ereport(ERROR,
7213  (errcode(ERRCODE_CONFIG_FILE_ERROR),
7214  errmsg("could not parse contents of file \"%s\"",
7215  AutoConfFileName)));
7216 
7217  FreeFile(infile);
7218  }
7219 
7220  /*
7221  * Now, replace any existing entry with the new value, or add it if
7222  * not present.
7223  */
7224  replace_auto_config_value(&head, &tail, name, value);
7225  }
7226 
7227  /*
7228  * To ensure crash safety, first write the new file data to a temp file,
7229  * then atomically rename it into place.
7230  *
7231  * If there is a temp file left over due to a previous crash, it's okay to
7232  * truncate and reuse it.
7233  */
7234  Tmpfd = BasicOpenFile(AutoConfTmpFileName,
7235  O_CREAT | O_RDWR | O_TRUNC,
7236  S_IRUSR | S_IWUSR);
7237  if (Tmpfd < 0)
7238  ereport(ERROR,
7240  errmsg("could not open file \"%s\": %m",
7241  AutoConfTmpFileName)));
7242 
7243  /*
7244  * Use a TRY block to clean up the file if we fail. Since we need a TRY
7245  * block anyway, OK to use BasicOpenFile rather than OpenTransientFile.
7246  */
7247  PG_TRY();
7248  {
7249  /* Write and sync the new contents to the temporary file */
7250  write_auto_conf_file(Tmpfd, AutoConfTmpFileName, head);
7251 
7252  /* Close before renaming; may be required on some platforms */
7253  close(Tmpfd);
7254  Tmpfd = -1;
7255 
7256  /*
7257  * As the rename is atomic operation, if any problem occurs after this
7258  * at worst it can lose the parameters set by last ALTER SYSTEM
7259  * command.
7260  */
7261  durable_rename(AutoConfTmpFileName, AutoConfFileName, ERROR);
7262  }
7263  PG_CATCH();
7264  {
7265  /* Close file first, else unlink might fail on some platforms */
7266  if (Tmpfd >= 0)
7267  close(Tmpfd);
7268 
7269  /* Unlink, but ignore any error */
7270  (void) unlink(AutoConfTmpFileName);
7271 
7272  PG_RE_THROW();
7273  }
7274  PG_END_TRY();
7275 
7276  FreeConfigVariables(head);
7277 
7278  LWLockRelease(AutoFileLock);
7279 }
static bool parse_and_validate_value(struct config_generic *record, const char *name, const char *value, GucSource source, int elevel, union config_var_val *newval, void **newextra)
Definition: guc.c:5724
VariableSetKind kind
Definition: parsenodes.h:1957
int errcode(int sqlerrcode)
Definition: elog.c:575
bool superuser(void)
Definition: superuser.c:47
int snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3
#define LOG
Definition: elog.h:26
void LWLockRelease(LWLock *lock)
Definition: lwlock.c:1715
#define ERROR
Definition: elog.h:43
#define MAXPGPATH
static struct @121 value
VariableSetStmt * setstmt
Definition: parsenodes.h:3050
int errcode_for_file_access(void)
Definition: elog.c:598
FILE * AllocateFile(const char *name, const char *mode)
Definition: fd.c:2094
int unlink(const char *filename)
#define ereport(elevel, rest)
Definition: elog.h:122
int durable_rename(const char *oldfile, const char *newfile, int elevel)
Definition: fd.c:593
enum config_type vartype
Definition: guc_tables.h:153
#define GUC_DISALLOW_IN_FILE
Definition: guc.h:210
static void write_auto_conf_file(int fd, const char *filename, ConfigVariable *head_p)
Definition: guc.c:6929
static void infile(const char *filename)
Definition: zic.c:1150
#define free(a)
Definition: header.h:65
static struct config_generic * find_option(const char *name, bool create_placeholders, int elevel)
Definition: guc.c:4372
#define PG_CATCH()
Definition: elog.h:293
#define NULL
Definition: c.h:229
#define newval
#define PG_AUTOCONF_FILENAME
Definition: guc.h:34
bool LWLockAcquire(LWLock *lock, LWLockMode mode)
Definition: lwlock.c:1111
#define PG_RE_THROW()
Definition: elog.h:314
const char * name
Definition: encode.c:521
#define GUC_DISALLOW_IN_AUTO_FILE
Definition: guc.h:215
int FreeFile(FILE *file)
Definition: fd.c:2277
int errmsg(const char *fmt,...)
Definition: elog.c:797
bool ParseConfigFp(FILE *fp, const char *config_file, int depth, int elevel, ConfigVariable **head_p, ConfigVariable **tail_p)
static void replace_auto_config_value(ConfigVariable **head_p, ConfigVariable **tail_p, const char *name, const char *value)
Definition: guc.c:6997
void FreeConfigVariables(ConfigVariable *list)
#define elog
Definition: elog.h:219
#define close(a)
Definition: win32.h:12
#define PG_TRY()
Definition: elog.h:284
char * ExtractSetVariableArgs(VariableSetStmt *stmt)
Definition: guc.c:7409
#define PG_END_TRY()
Definition: elog.h:300
GucContext context
Definition: guc_tables.h:147
int BasicOpenFile(FileName fileName, int fileFlags, int fileMode)
Definition: fd.c:936
static void assign_application_name ( const char *  newval,
void *  extra 
)
static

Definition at line 10463 of file guc.c.

References pgstat_report_appname().

10464 {
10465  /* Update the pg_stat_activity view */
10467 }
void pgstat_report_appname(const char *appname)
Definition: pgstat.c:3163
#define newval
static void assign_effective_io_concurrency ( int  newval,
void *  extra 
)
static

Definition at line 10411 of file guc.c.

References target_prefetch_pages.

10412 {
10413 #ifdef USE_PREFETCH
10414  target_prefetch_pages = *((int *) extra);
10415 #endif /* USE_PREFETCH */
10416 }
int target_prefetch_pages
Definition: bufmgr.c:129
static void assign_log_destination ( const char *  newval,
void *  extra 
)
static

Definition at line 10099 of file guc.c.

References Log_destination.

10100 {
10101  Log_destination = *((int *) extra);
10102 }
int Log_destination
Definition: elog.c:106
static void assign_pgstat_temp_directory ( const char *  newval,
void *  extra 
)
static

Definition at line 10419 of file guc.c.

References ERROR, free, guc_malloc(), pgstat_stat_directory, pgstat_stat_filename, and pgstat_stat_tmpname.

10420 {
10421  /* check_canonical_path already canonicalized newval for us */
10422  char *dname;
10423  char *tname;
10424  char *fname;
10425 
10426  /* directory */
10427  dname = guc_malloc(ERROR, strlen(newval) + 1); /* runtime dir */
10428  sprintf(dname, "%s", newval);
10429 
10430  /* global stats */
10431  tname = guc_malloc(ERROR, strlen(newval) + 12); /* /global.tmp */
10432  sprintf(tname, "%s/global.tmp", newval);
10433  fname = guc_malloc(ERROR, strlen(newval) + 13); /* /global.stat */
10434  sprintf(fname, "%s/global.stat", newval);
10435 
10438  pgstat_stat_directory = dname;
10439  if (pgstat_stat_tmpname)
10441  pgstat_stat_tmpname = tname;
10444  pgstat_stat_filename = fname;
10445 }
char * pgstat_stat_filename
Definition: pgstat.c:135
#define ERROR
Definition: elog.h:43
char * pgstat_stat_directory
Definition: pgstat.c:134
#define free(a)
Definition: header.h:65
#define newval
char * pgstat_stat_tmpname
Definition: pgstat.c:136
static void * guc_malloc(int elevel, size_t size)
Definition: guc.c:3976
static void assign_session_replication_role ( int  newval,
void *  extra 
)
static

Definition at line 10125 of file guc.c.

References ResetPlanCache(), and SessionReplicationRole.

10126 {
10127  /*
10128  * Must flush the plan cache when changing replication role; but don't
10129  * flush unnecessarily.
10130  */
10132  ResetPlanCache();
10133 }
int SessionReplicationRole
Definition: trigger.c:65
void ResetPlanCache(void)
Definition: plancache.c:1860
#define newval
static void assign_syslog_facility ( int  newval,
void *  extra 
)
static

Definition at line 10105 of file guc.c.

10106 {
10107 #ifdef HAVE_SYSLOG
10108  set_syslog_parameters(syslog_ident_str ? syslog_ident_str : "postgres",
10109  newval);
10110 #endif
10111  /* Without syslog support, just ignore it */
10112 }
static char * syslog_ident_str
Definition: guc.c:494
#define newval
static void assign_syslog_ident ( const char *  newval,
void *  extra 
)
static

Definition at line 10115 of file guc.c.

10116 {
10117 #ifdef HAVE_SYSLOG
10118  set_syslog_parameters(newval, syslog_facility);
10119 #endif
10120  /* Without syslog support, it will always be set to "none", so ignore */
10121 }
static int syslog_facility
Definition: guc.c:160
#define newval
static void assign_tcp_keepalives_count ( int  newval,
void *  extra 
)
static

Definition at line 10324 of file guc.c.

References MyProcPort, and pq_setkeepalivescount().

10325 {
10326  /* See comments in assign_tcp_keepalives_idle */
10328 }
struct Port * MyProcPort
Definition: globals.c:41
int pq_setkeepalivescount(int count, Port *port)
Definition: pqcomm.c:1888
#define newval
static void assign_tcp_keepalives_idle ( int  newval,
void *  extra 
)
static

Definition at line 10280 of file guc.c.

References MyProcPort, and pq_setkeepalivesidle().

10281 {
10282  /*
10283  * The kernel API provides no way to test a value without setting it; and
10284  * once we set it we might fail to unset it. So there seems little point
10285  * in fully implementing the check-then-assign GUC API for these
10286  * variables. Instead we just do the assignment on demand. pqcomm.c
10287  * reports any problems via elog(LOG).
10288  *
10289  * This approach means that the GUC value might have little to do with the
10290  * actual kernel value, so we use a show_hook that retrieves the kernel
10291  * value rather than trusting GUC's copy.
10292  */
10294 }
struct Port * MyProcPort
Definition: globals.c:41
int pq_setkeepalivesidle(int idle, Port *port)
Definition: pqcomm.c:1730
#define newval
static void assign_tcp_keepalives_interval ( int  newval,
void *  extra 
)
static

Definition at line 10307 of file guc.c.

References MyProcPort, and pq_setkeepalivesinterval().

10308 {
10309  /* See comments in assign_tcp_keepalives_idle */
10311 }
struct Port * MyProcPort
Definition: globals.c:41
int pq_setkeepalivesinterval(int interval, Port *port)
Definition: pqcomm.c:1812
#define newval
static void assign_timezone_abbreviations ( const char *  newval,
void *  extra 
)
static

Definition at line 10244 of file guc.c.

References InstallTimeZoneAbbrevs().

10245 {
10246  /* Do nothing for the boot_val default of NULL */
10247  if (!extra)
10248  return;
10249 
10251 }
void InstallTimeZoneAbbrevs(TimeZoneAbbrevTable *tbl)
Definition: datetime.c:4603
static void assign_wal_consistency_checking ( const char *  newval,
void *  extra 
)
static

Definition at line 10036 of file guc.c.

References wal_consistency_checking.

10037 {
10038  wal_consistency_checking = (bool *) extra;
10039 }
bool * wal_consistency_checking
Definition: xlog.c:101
void AtEOXact_GUC ( bool  isCommit,
int  nestLevel 
)

Definition at line 5079 of file guc.c.

References Assert, config_bool::assign_hook, config_int::assign_hook, config_real::assign_hook, config_string::assign_hook, config_enum::assign_hook, config_var_val::boolval, discard_stack_value(), config_var_val::enumval, config_var_value::extra, config_generic::extra, config_generic::flags, config_bool::gen, config_int::gen, config_real::gen, config_string::gen, config_enum::gen, GUC_LOCAL, GUC_REPORT, GUC_SAVE, GUC_SET, GUC_SET_LOCAL, i, config_var_val::intval, guc_stack::masked, guc_stack::masked_scontext, guc_stack::nest_level, newval, NULL, num_guc_variables, pfree(), PGC_BOOL, PGC_ENUM, PGC_INT, PGC_REAL, PGC_S_SESSION, PGC_STRING, guc_stack::prev, guc_stack::prior, config_var_val::realval, ReportGUCOption(), guc_stack::scontext, config_generic::scontext, set_extra_field(), set_string_field(), guc_stack::source, config_generic::source, config_generic::stack, guc_stack::state, config_var_val::stringval, config_var_value::val, config_bool::variable, config_int::variable, config_real::variable, config_string::variable, config_enum::variable, and config_generic::vartype.

Referenced by AbortSubTransaction(), AbortTransaction(), CommitSubTransaction(), CommitTransaction(), do_analyze_rel(), ExecCreateTableAs(), ExecRefreshMatView(), execute_extension_script(), fmgr_security_definer(), index_build(), PrepareTransaction(), ProcedureCreate(), reset_transmission_modes(), restoreLocalGucs(), RI_Initial_Check(), vacuum_rel(), and validate_index().

5080 {
5081  bool still_dirty;
5082  int i;
5083 
5084  /*
5085  * Note: it's possible to get here with GUCNestLevel == nestLevel-1 during
5086  * abort, if there is a failure during transaction start before
5087  * AtStart_GUC is called.
5088  */
5089  Assert(nestLevel > 0 &&
5090  (nestLevel <= GUCNestLevel ||
5091  (nestLevel == GUCNestLevel + 1 && !isCommit)));
5092 
5093  /* Quick exit if nothing's changed in this transaction */
5094  if (!guc_dirty)
5095  {
5096  GUCNestLevel = nestLevel - 1;
5097  return;
5098  }
5099 
5100  still_dirty = false;
5101  for (i = 0; i < num_guc_variables; i++)
5102  {
5103  struct config_generic *gconf = guc_variables[i];
5104  GucStack *stack;
5105 
5106  /*
5107  * Process and pop each stack entry within the nest level. To simplify
5108  * fmgr_security_definer() and other places that use GUC_ACTION_SAVE,
5109  * we allow failure exit from code that uses a local nest level to be
5110  * recovered at the surrounding transaction or subtransaction abort;
5111  * so there could be more than one stack entry to pop.
5112  */
5113  while ((stack = gconf->stack) != NULL &&
5114  stack->nest_level >= nestLevel)
5115  {
5116  GucStack *prev = stack->prev;
5117  bool restorePrior = false;
5118  bool restoreMasked = false;
5119  bool changed;
5120 
5121  /*
5122  * In this next bit, if we don't set either restorePrior or
5123  * restoreMasked, we must "discard" any unwanted fields of the
5124  * stack entries to avoid leaking memory. If we do set one of
5125  * those flags, unused fields will be cleaned up after restoring.
5126  */
5127  if (!isCommit) /* if abort, always restore prior value */
5128  restorePrior = true;
5129  else if (stack->state == GUC_SAVE)
5130  restorePrior = true;
5131  else if (stack->nest_level == 1)
5132  {
5133  /* transaction commit */
5134  if (stack->state == GUC_SET_LOCAL)
5135  restoreMasked = true;
5136  else if (stack->state == GUC_SET)
5137  {
5138  /* we keep the current active value */
5139  discard_stack_value(gconf, &stack->prior);
5140  }
5141  else /* must be GUC_LOCAL */
5142  restorePrior = true;
5143  }
5144  else if (prev == NULL ||
5145  prev->nest_level < stack->nest_level - 1)
5146  {
5147  /* decrement entry's level and do not pop it */
5148  stack->nest_level--;
5149  continue;
5150  }
5151  else
5152  {
5153  /*
5154  * We have to merge this stack entry into prev. See README for
5155  * discussion of this bit.
5156  */
5157  switch (stack->state)
5158  {
5159  case GUC_SAVE:
5160  Assert(false); /* can't get here */
5161 
5162  case GUC_SET:
5163  /* next level always becomes SET */
5164  discard_stack_value(gconf, &stack->prior);
5165  if (prev->state == GUC_SET_LOCAL)
5166  discard_stack_value(gconf, &prev->masked);
5167  prev->state = GUC_SET;
5168  break;
5169 
5170  case GUC_LOCAL:
5171  if (prev->state == GUC_SET)
5172  {
5173  /* LOCAL migrates down */
5174  prev->masked_scontext = stack->scontext;
5175  prev->masked = stack->prior;
5176  prev->state = GUC_SET_LOCAL;
5177  }
5178  else
5179  {
5180  /* else just forget this stack level */
5181  discard_stack_value(gconf, &stack->prior);
5182  }
5183  break;
5184 
5185  case GUC_SET_LOCAL:
5186  /* prior state at this level no longer wanted */
5187  discard_stack_value(gconf, &stack->prior);
5188  /* copy down the masked state */
5189  prev->masked_scontext = stack->masked_scontext;
5190  if (prev->state == GUC_SET_LOCAL)
5191  discard_stack_value(gconf, &prev->masked);
5192  prev->masked = stack->masked;
5193  prev->state = GUC_SET_LOCAL;
5194  break;
5195  }
5196  }
5197 
5198  changed = false;
5199 
5200  if (restorePrior || restoreMasked)
5201  {
5202  /* Perform appropriate restoration of the stacked value */
5203  config_var_value newvalue;
5204  GucSource newsource;
5205  GucContext newscontext;
5206 
5207  if (restoreMasked)
5208  {
5209  newvalue = stack->masked;
5210  newsource = PGC_S_SESSION;
5211  newscontext = stack->masked_scontext;
5212  }
5213  else
5214  {
5215  newvalue = stack->prior;
5216  newsource = stack->source;
5217  newscontext = stack->scontext;
5218  }
5219 
5220  switch (gconf->vartype)
5221  {
5222  case PGC_BOOL:
5223  {
5224  struct config_bool *conf = (struct config_bool *) gconf;
5225  bool newval = newvalue.val.boolval;
5226  void *newextra = newvalue.extra;
5227 
5228  if (*conf->variable != newval ||
5229  conf->gen.extra != newextra)
5230  {
5231  if (conf->assign_hook)
5232  (*conf->assign_hook) (newval, newextra);
5233  *conf->variable = newval;
5234  set_extra_field(&conf->gen, &conf->gen.extra,
5235  newextra);
5236  changed = true;
5237  }
5238  break;
5239  }
5240  case PGC_INT:
5241  {
5242  struct config_int *conf = (struct config_int *) gconf;
5243  int newval = newvalue.val.intval;
5244  void *newextra = newvalue.extra;
5245 
5246  if (*conf->variable != newval ||
5247  conf->gen.extra != newextra)
5248  {
5249  if (conf->assign_hook)
5250  (*conf->assign_hook) (newval, newextra);
5251  *conf->variable = newval;
5252  set_extra_field(&conf->gen, &conf->gen.extra,
5253  newextra);
5254  changed = true;
5255  }
5256  break;
5257  }
5258  case PGC_REAL:
5259  {
5260  struct config_real *conf = (struct config_real *) gconf;
5261  double newval = newvalue.val.realval;
5262  void *newextra = newvalue.extra;
5263 
5264  if (*conf->variable != newval ||
5265  conf->gen.extra != newextra)
5266  {
5267  if (conf->assign_hook)
5268  (*conf->assign_hook) (newval, newextra);
5269  *conf->variable = newval;
5270  set_extra_field(&conf->gen, &conf->gen.extra,
5271  newextra);
5272  changed = true;
5273  }
5274  break;
5275  }
5276  case PGC_STRING:
5277  {
5278  struct config_string *conf = (struct config_string *) gconf;
5279  char *newval = newvalue.val.stringval;
5280  void *newextra = newvalue.extra;
5281 
5282  if (*conf->variable != newval ||
5283  conf->gen.extra != newextra)
5284  {
5285  if (conf->assign_hook)
5286  (*conf->assign_hook) (newval, newextra);
5287  set_string_field(conf, conf->variable, newval);
5288  set_extra_field(&conf->gen, &conf->gen.extra,
5289  newextra);
5290  changed = true;
5291  }
5292 
5293  /*
5294  * Release stacked values if not used anymore. We
5295  * could use discard_stack_value() here, but since
5296  * we have type-specific code anyway, might as
5297  * well inline it.
5298  */
5299  set_string_field(conf, &stack->prior.val.stringval, NULL);
5300  set_string_field(conf, &stack->masked.val.stringval, NULL);
5301  break;
5302  }
5303  case PGC_ENUM:
5304  {
5305  struct config_enum *conf = (struct config_enum *) gconf;
5306  int newval = newvalue.val.enumval;
5307  void *newextra = newvalue.extra;
5308 
5309  if (*conf->variable != newval ||
5310  conf->gen.extra != newextra)
5311  {
5312  if (conf->assign_hook)
5313  (*conf->assign_hook) (newval, newextra);
5314  *conf->variable = newval;
5315  set_extra_field(&conf->gen, &conf->gen.extra,
5316  newextra);
5317  changed = true;
5318  }
5319  break;
5320  }
5321  }
5322 
5323  /*
5324  * Release stacked extra values if not used anymore.
5325  */
5326  set_extra_field(gconf, &(stack->prior.extra), NULL);
5327  set_extra_field(gconf, &(stack->masked.extra), NULL);
5328 
5329  /* And restore source information */
5330  gconf->source = newsource;
5331  gconf->scontext = newscontext;
5332  }
5333 
5334  /* Finish popping the state stack */
5335  gconf->stack = prev;
5336  pfree(stack);
5337 
5338  /* Report new value if we changed it */
5339  if (changed && (gconf->flags & GUC_REPORT))
5340  ReportGUCOption(gconf);
5341  } /* end of stack-popping loop */
5342 
5343  if (stack != NULL)
5344  still_dirty = true;
5345  }
5346 
5347  /* If there are no remaining stack entries, we can reset guc_dirty */
5348  guc_dirty = still_dirty;
5349 
5350  /* Update nesting level */
5351  GUCNestLevel = nestLevel - 1;
5352 }
struct guc_stack * prev
Definition: guc_tables.h:120
GucSource source
Definition: guc_tables.h:155
GucContext
Definition: guc.h:68
union config_var_val val
Definition: guc_tables.h:46
int nest_level
Definition: guc_tables.h:121
GucRealAssignHook assign_hook
Definition: guc_tables.h:216
char ** variable
Definition: guc_tables.h:227
static int GUCNestLevel
Definition: guc.c:3948
bool * variable
Definition: guc_tables.h:181
GucEnumAssignHook assign_hook
Definition: guc_tables.h:245
GucBoolAssignHook assign_hook
Definition: guc_tables.h:184
config_var_value masked
Definition: guc_tables.h:128
GucContext scontext
Definition: guc_tables.h:157
GucIntAssignHook assign_hook
Definition: guc_tables.h:200
GucSource
Definition: guc.h:105
int * variable
Definition: guc_tables.h:195
int * variable
Definition: guc_tables.h:241
void pfree(void *pointer)
Definition: mcxt.c:950
static int num_guc_variables
Definition: guc.c:3938
static void discard_stack_value(struct config_generic *gconf, config_var_value *val)
Definition: guc.c:4163
GucSource source
Definition: guc_tables.h:123
static void set_extra_field(struct config_generic *gconf, void **field, void *newval)
Definition: guc.c:4109
struct config_generic gen
Definition: guc_tables.h:179
struct config_generic gen
Definition: guc_tables.h:193
GucContext masked_scontext
Definition: guc_tables.h:126
#define GUC_REPORT
Definition: guc.h:208
double * variable
Definition: guc_tables.h:211
static void set_string_field(struct config_string *conf, char **field, char *newval)
Definition: guc.c:4048
static struct config_generic ** guc_variables
Definition: guc.c:3935
enum config_type vartype
Definition: guc_tables.h:153
GucContext scontext
Definition: guc_tables.h:125
struct config_generic gen
Definition: guc_tables.h:239
struct config_generic gen
Definition: guc_tables.h:225
GucStackState state
Definition: guc_tables.h:122
GucStringAssignHook assign_hook
Definition: guc_tables.h:230
#define NULL
Definition: c.h:229
#define Assert(condition)
Definition: c.h:675
#define newval
char * stringval
Definition: guc_tables.h:36
int i
static void ReportGUCOption(struct config_generic *record)
Definition: guc.c:5388
GucStack * stack
Definition: guc_tables.h:159
double realval
Definition: guc_tables.h:35
static bool guc_dirty
Definition: guc.c:3944
config_var_value prior
Definition: guc_tables.h:127
struct config_generic gen
Definition: guc_tables.h:209
void AtStart_GUC ( void  )

Definition at line 5045 of file guc.c.

References elog, and WARNING.

Referenced by StartTransaction().

5046 {
5047  /*
5048  * The nest level should be 0 between transactions; if it isn't, somebody
5049  * didn't call AtEOXact_GUC, or called it with the wrong nestLevel. We
5050  * throw a warning but make no other effort to clean up.
5051  */
5052  if (GUCNestLevel != 0)
5053  elog(WARNING, "GUC nest level = %d at transaction start",
5054  GUCNestLevel);
5055  GUCNestLevel = 1;
5056 }
static int GUCNestLevel
Definition: guc.c:3948
#define WARNING
Definition: elog.h:40
#define elog
Definition: elog.h:219
void BeginReportingGUCOptions ( void  )

Definition at line 5360 of file guc.c.

References DestRemote, config_generic::flags, FrontendProtocol, GUC_REPORT, i, num_guc_variables, PG_PROTOCOL_MAJOR, ReportGUCOption(), and whereToSendOutput.

Referenced by PostgresMain().

5361 {
5362  int i;
5363 
5364  /*
5365  * Don't do anything unless talking to an interactive frontend of protocol
5366  * 3.0 or later.
5367  */
5368  if (whereToSendOutput != DestRemote ||
5370  return;
5371 
5372  reporting_enabled = true;
5373 
5374  /* Transmit initial values of interesting variables */
5375  for (i = 0; i < num_guc_variables; i++)
5376  {
5377  struct config_generic *conf = guc_variables[i];
5378 
5379  if (conf->flags & GUC_REPORT)
5380  ReportGUCOption(conf);
5381  }
5382 }
#define PG_PROTOCOL_MAJOR(v)
Definition: pqcomm.h:104
static int num_guc_variables
Definition: guc.c:3938
#define GUC_REPORT
Definition: guc.h:208
static struct config_generic ** guc_variables
Definition: guc.c:3935
int i
static void ReportGUCOption(struct config_generic *record)
Definition: guc.c:5388
CommandDest whereToSendOutput
Definition: postgres.c:88
static bool reporting_enabled
Definition: guc.c:3946
ProtocolVersion FrontendProtocol
Definition: globals.c:27
void build_guc_variables ( void  )

Definition at line 4199 of file guc.c.

References FATAL, free, config_bool::gen, config_int::gen, config_real::gen, config_string::gen, config_enum::gen, guc_malloc(), guc_var_compare(), i, config_generic::name, PGC_BOOL, PGC_ENUM, PGC_INT, PGC_REAL, PGC_STRING, qsort, and config_generic::vartype.

Referenced by GucInfoMain(), and InitializeGUCOptions().

4200 {
4201  int size_vars;
4202  int num_vars = 0;
4203  struct config_generic **guc_vars;
4204  int i;
4205 
4206  for (i = 0; ConfigureNamesBool[i].gen.name; i++)
4207  {
4208  struct config_bool *conf = &ConfigureNamesBool[i];
4209 
4210  /* Rather than requiring vartype to be filled in by hand, do this: */
4211  conf->gen.vartype = PGC_BOOL;
4212  num_vars++;
4213  }
4214 
4215  for (i = 0; ConfigureNamesInt[i].gen.name; i++)
4216  {
4217  struct config_int *conf = &ConfigureNamesInt[i];
4218 
4219  conf->gen.vartype = PGC_INT;
4220  num_vars++;
4221  }
4222 
4223  for (i = 0; ConfigureNamesReal[i].gen.name; i++)
4224  {
4225  struct config_real *conf = &ConfigureNamesReal[i];
4226 
4227  conf->gen.vartype = PGC_REAL;
4228  num_vars++;
4229  }
4230 
4231  for (i = 0; ConfigureNamesString[i].gen.name; i++)
4232  {
4233  struct config_string *conf = &ConfigureNamesString[i];
4234 
4235  conf->gen.vartype = PGC_STRING;
4236  num_vars++;
4237  }
4238 
4239  for (i = 0; ConfigureNamesEnum[i].gen.name; i++)
4240  {
4241  struct config_enum *conf = &ConfigureNamesEnum[i];
4242 
4243  conf->gen.vartype = PGC_ENUM;
4244  num_vars++;
4245  }
4246 
4247  /*
4248  * Create table with 20% slack
4249  */
4250  size_vars = num_vars + num_vars / 4;
4251 
4252  guc_vars = (struct config_generic **)
4253  guc_malloc(FATAL, size_vars * sizeof(struct config_generic *));
4254 
4255  num_vars = 0;
4256 
4257  for (i = 0; ConfigureNamesBool[i].gen.name; i++)
4258  guc_vars[num_vars++] = &ConfigureNamesBool[i].gen;
4259 
4260  for (i = 0; ConfigureNamesInt[i].gen.name; i++)
4261  guc_vars[num_vars++] = &ConfigureNamesInt[i].gen;
4262 
4263  for (i = 0; ConfigureNamesReal[i].gen.name; i++)
4264  guc_vars[num_vars++] = &ConfigureNamesReal[i].gen;
4265 
4266  for (i = 0; ConfigureNamesString[i].gen.name; i++)
4267  guc_vars[num_vars++] = &ConfigureNamesString[i].gen;
4268 
4269  for (i = 0; ConfigureNamesEnum[i].gen.name; i++)
4270  guc_vars[num_vars++] = &ConfigureNamesEnum[i].gen;
4271 
4272  if (guc_variables)
4274  guc_variables = guc_vars;
4275  num_guc_variables = num_vars;
4276  size_guc_variables = size_vars;
4278  sizeof(struct config_generic *), guc_var_compare);
4279 }
static struct config_int ConfigureNamesInt[]
Definition: guc.c:1676
const char * name
Definition: guc_tables.h:146
static struct config_enum ConfigureNamesEnum[]
Definition: guc.c:3649
static struct config_bool ConfigureNamesBool[]
Definition: guc.c:803
static int guc_var_compare(const void *a, const void *b)
Definition: guc.c:4421
static int num_guc_variables
Definition: guc.c:3938
#define FATAL
Definition: elog.h:52
struct config_generic gen
Definition: guc_tables.h:179
struct config_generic gen
Definition: guc_tables.h:193
static struct config_generic ** guc_variables
Definition: guc.c:3935
enum config_type vartype
Definition: guc_tables.h:153
static int size_guc_variables
Definition: guc.c:3941
static struct config_real ConfigureNamesReal[]
Definition: guc.c:2895
struct config_generic gen
Definition: guc_tables.h:239
struct config_generic gen
Definition: guc_tables.h:225
#define free(a)
Definition: header.h:65
static struct config_string ConfigureNamesString[]
Definition: guc.c:3056
int i
#define qsort(a, b, c, d)
Definition: port.h:443
static void * guc_malloc(int elevel, size_t size)
Definition: guc.c:3976
struct config_generic gen
Definition: guc_tables.h:209
static bool call_bool_check_hook ( struct config_bool conf,
bool newval,
void **  extra,
GucSource  source,
int  elevel 
)
static

Definition at line 9786 of file guc.c.

References config_bool::check_hook, ereport, errcode(), errdetail_internal(), errhint(), errmsg(), errmsg_internal(), FlushErrorState(), config_bool::gen, GUC_check_errcode_value, GUC_check_errdetail_string, GUC_check_errhint_string, GUC_check_errmsg_string, config_generic::name, and NULL.

Referenced by InitializeOneGUCOption(), parse_and_validate_value(), and set_config_option().

9788 {
9789  /* Quick success if no hook */
9790  if (!conf->check_hook)
9791  return true;
9792 
9793  /* Reset variables that might be set by hook */
9794  GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
9798 
9799  if (!(*conf->check_hook) (newval, extra, source))
9800  {
9801  ereport(elevel,
9805  errmsg("invalid value for parameter \"%s\": %d",
9806  conf->gen.name, (int) *newval),
9810  errhint("%s", GUC_check_errhint_string) : 0));
9811  /* Flush any strings created in ErrorContext */
9812  FlushErrorState();
9813  return false;
9814  }
9815 
9816  return true;
9817 }
char * GUC_check_errhint_string
Definition: guc.c:133
GucSource source
Definition: guc_tables.h:155
int errhint(const char *fmt,...)
Definition: elog.c:987
const char * name
Definition: guc_tables.h:146
int errcode(int sqlerrcode)
Definition: elog.c:575
static int GUC_check_errcode_value
Definition: guc.c:128
void FlushErrorState(void)
Definition: elog.c:1587
int errdetail_internal(const char *fmt,...)
Definition: elog.c:900
struct config_generic gen
Definition: guc_tables.h:179
char * GUC_check_errdetail_string
Definition: guc.c:132
#define ereport(elevel, rest)
Definition: elog.h:122
static int elevel
Definition: vacuumlazy.c:136
GucBoolCheckHook check_hook
Definition: guc_tables.h:183
int errmsg_internal(const char *fmt,...)
Definition: elog.c:827
#define NULL
Definition: c.h:229
#define newval
char * GUC_check_errmsg_string
Definition: guc.c:131
int errmsg(const char *fmt,...)
Definition: elog.c:797
static bool call_enum_check_hook ( struct config_enum conf,
int *  newval,
void **  extra,
GucSource  source,
int  elevel 
)
static

Definition at line 9922 of file guc.c.

References config_enum::check_hook, config_enum_lookup_by_value(), ereport, errcode(), errdetail_internal(), errhint(), errmsg(), errmsg_internal(), FlushErrorState(), config_enum::gen, GUC_check_errcode_value, GUC_check_errdetail_string, GUC_check_errhint_string, GUC_check_errmsg_string, config_generic::name, and NULL.

Referenced by InitializeOneGUCOption(), parse_and_validate_value(), and set_config_option().

9924 {
9925  /* Quick success if no hook */
9926  if (!conf->check_hook)
9927  return true;
9928 
9929  /* Reset variables that might be set by hook */
9930  GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
9934 
9935  if (!(*conf->check_hook) (newval, extra, source))
9936  {
9937  ereport(elevel,
9941  errmsg("invalid value for parameter \"%s\": \"%s\"",
9942  conf->gen.name,
9947  errhint("%s", GUC_check_errhint_string) : 0));
9948  /* Flush any strings created in ErrorContext */
9949  FlushErrorState();
9950  return false;
9951  }
9952 
9953  return true;
9954 }
char * GUC_check_errhint_string
Definition: guc.c:133
GucSource source
Definition: guc_tables.h:155
GucEnumCheckHook check_hook
Definition: guc_tables.h:244
int errhint(const char *fmt,...)
Definition: elog.c:987
const char * name
Definition: guc_tables.h:146
int errcode(int sqlerrcode)
Definition: elog.c:575
const char * config_enum_lookup_by_value(struct config_enum *record, int val)
Definition: guc.c:5617
static int GUC_check_errcode_value
Definition: guc.c:128
void FlushErrorState(void)
Definition: elog.c:1587
int errdetail_internal(const char *fmt,...)
Definition: elog.c:900
char * GUC_check_errdetail_string
Definition: guc.c:132
#define ereport(elevel, rest)
Definition: elog.h:122
static int elevel
Definition: vacuumlazy.c:136
struct config_generic gen
Definition: guc_tables.h:239
int errmsg_internal(const char *fmt,...)
Definition: elog.c:827
#define NULL
Definition: c.h:229
#define newval
char * GUC_check_errmsg_string
Definition: guc.c:131
int errmsg(const char *fmt,...)
Definition: elog.c:797
static bool call_int_check_hook ( struct config_int conf,
int *  newval,
void **  extra,
GucSource  source,
int  elevel 
)
static

Definition at line 9820 of file guc.c.

References config_int::check_hook, ereport, errcode(), errdetail_internal(), errhint(), errmsg(), errmsg_internal(), FlushErrorState(), config_int::gen, GUC_check_errcode_value, GUC_check_errdetail_string, GUC_check_errhint_string, GUC_check_errmsg_string, config_generic::name, and NULL.

Referenced by InitializeOneGUCOption(), parse_and_validate_value(), and set_config_option().

9822 {
9823  /* Quick success if no hook */
9824  if (!conf->check_hook)
9825  return true;
9826 
9827  /* Reset variables that might be set by hook */
9828  GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
9832 
9833  if (!(*conf->check_hook) (newval, extra, source))
9834  {
9835  ereport(elevel,
9839  errmsg("invalid value for parameter \"%s\": %d",
9840  conf->gen.name, *newval),
9844  errhint("%s", GUC_check_errhint_string) : 0));
9845  /* Flush any strings created in ErrorContext */
9846  FlushErrorState();
9847  return false;
9848  }
9849 
9850  return true;
9851 }
char * GUC_check_errhint_string
Definition: guc.c:133
GucSource source
Definition: guc_tables.h:155
int errhint(const char *fmt,...)
Definition: elog.c:987
const char * name
Definition: guc_tables.h:146
int errcode(int sqlerrcode)
Definition: elog.c:575
static int GUC_check_errcode_value
Definition: guc.c:128
GucIntCheckHook check_hook
Definition: guc_tables.h:199
void FlushErrorState(void)
Definition: elog.c:1587
int errdetail_internal(const char *fmt,...)
Definition: elog.c:900
struct config_generic gen
Definition: guc_tables.h:193
char * GUC_check_errdetail_string
Definition: guc.c:132
#define ereport(elevel, rest)
Definition: elog.h:122
static int elevel
Definition: vacuumlazy.c:136
int errmsg_internal(const char *fmt,...)
Definition: elog.c:827
#define NULL
Definition: c.h:229
#define newval
char * GUC_check_errmsg_string
Definition: guc.c:131
int errmsg(const char *fmt,...)
Definition: elog.c:797
static bool call_real_check_hook ( struct config_real conf,
double *  newval,
void **  extra,
GucSource  source,
int  elevel 
)
static

Definition at line 9854 of file guc.c.

References config_real::check_hook, ereport, errcode(), errdetail_internal(), errhint(), errmsg(), errmsg_internal(), FlushErrorState(), config_real::gen, GUC_check_errcode_value, GUC_check_errdetail_string, GUC_check_errhint_string, GUC_check_errmsg_string, config_generic::name, and NULL.

Referenced by InitializeOneGUCOption(), parse_and_validate_value(), and set_config_option().

9856 {
9857  /* Quick success if no hook */
9858  if (!conf->check_hook)
9859  return true;
9860 
9861  /* Reset variables that might be set by hook */
9862  GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
9866 
9867  if (!(*conf->check_hook) (newval, extra, source))
9868  {
9869  ereport(elevel,
9873  errmsg("invalid value for parameter \"%s\": %g",
9874  conf->gen.name, *newval),
9878  errhint("%s", GUC_check_errhint_string) : 0));
9879  /* Flush any strings created in ErrorContext */
9880  FlushErrorState();
9881  return false;
9882  }
9883 
9884  return true;
9885 }
char * GUC_check_errhint_string
Definition: guc.c:133
GucSource source
Definition: guc_tables.h:155
int errhint(const char *fmt,...)
Definition: elog.c:987
const char * name
Definition: guc_tables.h:146
int errcode(int sqlerrcode)
Definition: elog.c:575
static int GUC_check_errcode_value
Definition: guc.c:128
GucRealCheckHook check_hook
Definition: guc_tables.h:215
void FlushErrorState(void)
Definition: elog.c:1587
int errdetail_internal(const char *fmt,...)
Definition: elog.c:900
char * GUC_check_errdetail_string
Definition: guc.c:132
#define ereport(elevel, rest)
Definition: elog.h:122
static int elevel
Definition: vacuumlazy.c:136
int errmsg_internal(const char *fmt,...)
Definition: elog.c:827
#define NULL
Definition: c.h:229
#define newval
char * GUC_check_errmsg_string
Definition: guc.c:131
int errmsg(const char *fmt,...)
Definition: elog.c:797
struct config_generic gen
Definition: guc_tables.h:209
static bool call_string_check_hook ( struct config_string conf,
char **  newval,
void **  extra,
GucSource  source,
int  elevel 
)
static

Definition at line 9888 of file guc.c.

References config_string::check_hook, ereport, errcode(), errdetail_internal(), errhint(), errmsg(), errmsg_internal(), FlushErrorState(), config_string::gen, GUC_check_errcode_value, GUC_check_errdetail_string, GUC_check_errhint_string, GUC_check_errmsg_string, config_generic::name, and NULL.

Referenced by InitializeOneGUCOption(), parse_and_validate_value(), and set_config_option().

9890 {
9891  /* Quick success if no hook */
9892  if (!conf->check_hook)
9893  return true;
9894 
9895  /* Reset variables that might be set by hook */
9896  GUC_check_errcode_value = ERRCODE_INVALID_PARAMETER_VALUE;
9900 
9901  if (!(*conf->check_hook) (newval, extra, source))
9902  {
9903  ereport(elevel,
9907  errmsg("invalid value for parameter \"%s\": \"%s\"",
9908  conf->gen.name, *newval ? *newval : ""),
9912  errhint("%s", GUC_check_errhint_string) : 0));
9913  /* Flush any strings created in ErrorContext */
9914  FlushErrorState();
9915  return false;
9916  }
9917 
9918  return true;
9919 }
char * GUC_check_errhint_string
Definition: guc.c:133
GucSource source
Definition: guc_tables.h:155
int errhint(const char *fmt,...)
Definition: elog.c:987
const char * name
Definition: guc_tables.h:146
GucStringCheckHook check_hook
Definition: guc_tables.h:229
int errcode(int sqlerrcode)
Definition: elog.c:575
static int GUC_check_errcode_value
Definition: guc.c:128
void FlushErrorState(void)
Definition: elog.c:1587
int errdetail_internal(const char *fmt,...)
Definition: elog.c:900
char * GUC_check_errdetail_string
Definition: guc.c:132
#define ereport(elevel, rest)
Definition: elog.h:122
static int elevel
Definition: vacuumlazy.c:136
struct config_generic gen
Definition: guc_tables.h:225
int errmsg_internal(const char *fmt,...)
Definition: elog.c:827
#define NULL
Definition: c.h:229
#define newval
char * GUC_check_errmsg_string
Definition: guc.c:131
int errmsg(const char *fmt,...)
Definition: elog.c:797
static bool can_skip_gucvar ( struct config_generic gconf)
static

Definition at line 8980 of file guc.c.

References config_generic::context, PGC_INTERNAL, PGC_POSTMASTER, PGC_S_DEFAULT, and config_generic::source.

Referenced by estimate_variable_size(), RestoreGUCState(), and serialize_variable().

8981 {
8982  return gconf->context == PGC_POSTMASTER ||
8983  gconf->context == PGC_INTERNAL || gconf->source == PGC_S_DEFAULT;
8984 }
GucSource source
Definition: guc_tables.h:155
GucContext context
Definition: guc_tables.h:147
static bool check_application_name ( char **  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10448 of file guc.c.

10449 {
10450  /* Only allow clean ASCII chars in the application name */
10451  char *p;
10452 
10453  for (p = *newval; *p; p++)
10454  {
10455  if (*p < 32 || *p > 126)
10456  *p = '?';
10457  }
10458 
10459  return true;
10460 }
#define newval
static bool check_autovacuum_max_workers ( int *  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10350 of file guc.c.

References MAX_BACKENDS, max_worker_processes, and MaxConnections.

10351 {
10353  return false;
10354  return true;
10355 }
#define MAX_BACKENDS
Definition: postmaster.h:75
int MaxConnections
Definition: globals.c:124
#define newval
int max_worker_processes
Definition: globals.c:125
static bool check_autovacuum_work_mem ( int *  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10358 of file guc.c.

10359 {
10360  /*
10361  * -1 indicates fallback.
10362  *
10363  * If we haven't yet changed the boot_val default of -1, just let it be.
10364  * Autovacuum will look to maintenance_work_mem instead.
10365  */
10366  if (*newval == -1)
10367  return true;
10368 
10369  /*
10370  * We clamp manually-set values to at least 1MB. Since
10371  * maintenance_work_mem is always set to at least this value, do the same
10372  * here.
10373  */
10374  if (*newval < 1024)
10375  *newval = 1024;
10376 
10377  return true;
10378 }
#define newval
static bool check_bonjour ( bool newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10150 of file guc.c.

References GUC_check_errmsg.

10151 {
10152 #ifndef USE_BONJOUR
10153  if (*newval)
10154  {
10155  GUC_check_errmsg("Bonjour is not supported by this build");
10156  return false;
10157  }
10158 #endif
10159  return true;
10160 }
#define GUC_check_errmsg
Definition: guc.h:403
#define newval
static bool check_canonical_path ( char **  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10201 of file guc.c.

References canonicalize_path().

10202 {
10203  /*
10204  * Since canonicalize_path never enlarges the string, we can just modify
10205  * newval in-place. But watch out for NULL, which is the default value
10206  * for external_pid_file.
10207  */
10208  if (*newval)
10210  return true;
10211 }
void canonicalize_path(char *path)
Definition: path.c:254
#define newval
static bool check_cluster_name ( char **  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10470 of file guc.c.

10471 {
10472  /* Only allow clean ASCII chars in the cluster name */
10473  char *p;
10474 
10475  for (p = *newval; *p; p++)
10476  {
10477  if (*p < 32 || *p > 126)
10478  *p = '?';
10479  }
10480 
10481  return true;
10482 }
#define newval
static bool check_effective_io_concurrency ( int *  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10389 of file guc.c.

References ComputeIoConcurrency(), ERROR, guc_malloc(), and rint().

10390 {
10391 #ifdef USE_PREFETCH
10392  double new_prefetch_pages;
10393 
10394  if (ComputeIoConcurrency(*newval, &new_prefetch_pages))
10395  {
10396  int *myextra = (int *) guc_malloc(ERROR, sizeof(int));
10397 
10398  *myextra = (int) rint(new_prefetch_pages);
10399  *extra = (void *) myextra;
10400 
10401  return true;
10402  }
10403  else
10404  return false;
10405 #else
10406  return true;
10407 #endif /* USE_PREFETCH */
10408 }
bool ComputeIoConcurrency(int io_concurrency, double *target)
Definition: bufmgr.c:467
#define ERROR
Definition: elog.h:43
double rint(double x)
Definition: rint.c:22
#define newval
static void * guc_malloc(int elevel, size_t size)
Definition: guc.c:3976
static bool check_log_destination ( char **  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10042 of file guc.c.

References ERROR, GUC_check_errdetail, guc_malloc(), lfirst, list_free(), LOG_DESTINATION_CSVLOG, LOG_DESTINATION_EVENTLOG, LOG_DESTINATION_STDERR, LOG_DESTINATION_SYSLOG, pfree(), pg_strcasecmp(), pstrdup(), and SplitIdentifierString().

10043 {
10044  char *rawstring;
10045  List *elemlist;
10046  ListCell *l;
10047  int newlogdest = 0;
10048  int *myextra;
10049 
10050  /* Need a modifiable copy of string */
10051  rawstring = pstrdup(*newval);
10052 
10053  /* Parse string into list of identifiers */
10054  if (!SplitIdentifierString(rawstring, ',', &elemlist))
10055  {
10056  /* syntax error in list */
10057  GUC_check_errdetail("List syntax is invalid.");
10058  pfree(rawstring);
10059  list_free(elemlist);
10060  return false;
10061  }
10062 
10063  foreach(l, elemlist)
10064  {
10065  char *tok = (char *) lfirst(l);
10066 
10067  if (pg_strcasecmp(tok, "stderr") == 0)
10068  newlogdest |= LOG_DESTINATION_STDERR;
10069  else if (pg_strcasecmp(tok, "csvlog") == 0)
10070  newlogdest |= LOG_DESTINATION_CSVLOG;
10071 #ifdef HAVE_SYSLOG
10072  else if (pg_strcasecmp(tok, "syslog") == 0)
10073  newlogdest |= LOG_DESTINATION_SYSLOG;
10074 #endif
10075 #ifdef WIN32
10076  else if (pg_strcasecmp(tok, "eventlog") == 0)
10077  newlogdest |= LOG_DESTINATION_EVENTLOG;
10078 #endif
10079  else
10080  {
10081  GUC_check_errdetail("Unrecognized key word: \"%s\".", tok);
10082  pfree(rawstring);
10083  list_free(elemlist);
10084  return false;
10085  }
10086  }
10087 
10088  pfree(rawstring);
10089  list_free(elemlist);
10090 
10091  myextra = (int *) guc_malloc(ERROR, sizeof(int));
10092  *myextra = newlogdest;
10093  *extra = (void *) myextra;
10094 
10095  return true;
10096 }
#define LOG_DESTINATION_EVENTLOG
Definition: elog.h:397
#define GUC_check_errdetail
Definition: guc.h:407
char * pstrdup(const char *in)
Definition: mcxt.c:1077
#define LOG_DESTINATION_SYSLOG
Definition: elog.h:396
int pg_strcasecmp(const char *s1, const char *s2)
Definition: pgstrcasecmp.c:36
void pfree(void *pointer)
Definition: mcxt.c:950
#define ERROR
Definition: elog.h:43
bool SplitIdentifierString(char *rawstring, char separator, List **namelist)
Definition: varlena.c:3260
#define LOG_DESTINATION_CSVLOG
Definition: elog.h:398
#define LOG_DESTINATION_STDERR
Definition: elog.h:395
#define lfirst(lc)
Definition: pg_list.h:106
#define newval
void list_free(List *list)
Definition: list.c:1133
static void * guc_malloc(int elevel, size_t size)
Definition: guc.c:3976
Definition: pg_list.h:45
static bool check_log_stats ( bool newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10187 of file guc.c.

References GUC_check_errdetail.

10188 {
10189  if (*newval &&
10191  {
10192  GUC_check_errdetail("Cannot enable \"log_statement_stats\" when "
10193  "\"log_parser_stats\", \"log_planner_stats\", "
10194  "or \"log_executor_stats\" is true.");
10195  return false;
10196  }
10197  return true;
10198 }
bool log_parser_stats
Definition: guc.c:438
#define GUC_check_errdetail
Definition: guc.h:407
#define newval
bool log_executor_stats
Definition: guc.c:440
bool log_planner_stats
Definition: guc.c:439
static bool check_max_worker_processes ( int *  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10381 of file guc.c.

References autovacuum_max_workers, MAX_BACKENDS, and MaxConnections.

10382 {
10384  return false;
10385  return true;
10386 }
#define MAX_BACKENDS
Definition: postmaster.h:75
int MaxConnections
Definition: globals.c:124
int autovacuum_max_workers
Definition: autovacuum.c:113
#define newval
static bool check_maxconnections ( int *  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10341 of file guc.c.

References autovacuum_max_workers, MAX_BACKENDS, and max_worker_processes.

10342 {
10343  if (*newval + autovacuum_max_workers + 1 +
10345  return false;
10346  return true;
10347 }
#define MAX_BACKENDS
Definition: postmaster.h:75
int autovacuum_max_workers
Definition: autovacuum.c:113
#define newval
int max_worker_processes
Definition: globals.c:125
static bool check_ssl ( bool newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10163 of file guc.c.

References GUC_check_errmsg.

10164 {
10165 #ifndef USE_SSL
10166  if (*newval)
10167  {
10168  GUC_check_errmsg("SSL is not supported by this build");
10169  return false;
10170  }
10171 #endif
10172  return true;
10173 }
#define GUC_check_errmsg
Definition: guc.h:403
#define newval
static bool check_stage_log_stats ( bool newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10176 of file guc.c.

References GUC_check_errdetail.

10177 {
10178  if (*newval && log_statement_stats)
10179  {
10180  GUC_check_errdetail("Cannot enable parameter when \"log_statement_stats\" is true.");
10181  return false;
10182  }
10183  return true;
10184 }
bool log_statement_stats
Definition: guc.c:441
#define GUC_check_errdetail
Definition: guc.h:407
#define newval
static bool check_temp_buffers ( int *  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10136 of file guc.c.

References GUC_check_errdetail, and NLocBuffer.

10137 {
10138  /*
10139  * Once local buffers have been initialized, it's too late to change this.
10140  */
10141  if (NLocBuffer && NLocBuffer != *newval)
10142  {
10143  GUC_check_errdetail("\"temp_buffers\" cannot be changed after any temporary tables have been accessed in the session.");
10144  return false;
10145  }
10146  return true;
10147 }
#define GUC_check_errdetail
Definition: guc.h:407
int NLocBuffer
Definition: localbuf.c:41
#define newval
static bool check_timezone_abbreviations ( char **  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 10214 of file guc.c.

References Assert, load_tzoffsets(), NULL, and PGC_S_DEFAULT.

10215 {
10216  /*
10217  * The boot_val given above for timezone_abbreviations is NULL. When we
10218  * see this we just do nothing. If this value isn't overridden from the
10219  * config file then pg_timezone_abbrev_initialize() will eventually
10220  * replace it with "Default". This hack has two purposes: to avoid
10221  * wasting cycles loading values that might soon be overridden from the
10222  * config file, and to avoid trying to read the timezone abbrev files
10223  * during InitializeGUCOptions(). The latter doesn't work in an
10224  * EXEC_BACKEND subprocess because my_exec_path hasn't been set yet and so
10225  * we can't locate PGSHAREDIR.
10226  */
10227  if (*newval == NULL)
10228  {
10230  return true;
10231  }
10232 
10233  /* OK, load the file and produce a malloc'd TimeZoneAbbrevTable */
10235 
10236  /* tzparser.c returns NULL on failure, reporting via GUC_check_errmsg */
10237  if (!*extra)
10238  return false;
10239 
10240  return true;
10241 }
GucSource source
Definition: guc_tables.h:155
TimeZoneAbbrevTable * load_tzoffsets(const char *filename)
Definition: tzparser.c:438
#define NULL
Definition: c.h:229
#define Assert(condition)
Definition: c.h:675
#define newval
static bool check_wal_consistency_checking ( char **  newval,
void **  extra,
GucSource  source 
)
static

Definition at line 9962 of file guc.c.

References ERROR, GUC_check_errdetail, guc_malloc(), lfirst, list_free(), MemSet, NULL, pfree(), pg_strcasecmp(), pstrdup(), RmgrData::rm_mask, RM_MAX_ID, RmgrTable, and SplitIdentifierString().

9963 {
9964  char *rawstring;
9965  List *elemlist;
9966  ListCell *l;
9967  bool newwalconsistency[RM_MAX_ID + 1];
9968 
9969  /* Initialize the array */
9970  MemSet(newwalconsistency, 0, (RM_MAX_ID + 1) * sizeof(bool));
9971 
9972  /* Need a modifiable copy of string */
9973  rawstring = pstrdup(*newval);
9974 
9975  /* Parse string into list of identifiers */
9976  if (!SplitIdentifierString(rawstring, ',', &elemlist))
9977  {
9978  /* syntax error in list */
9979  GUC_check_errdetail("List syntax is invalid.");
9980  pfree(rawstring);
9981  list_free(elemlist);
9982  return false;
9983  }
9984 
9985  foreach(l, elemlist)
9986  {
9987  char *tok = (char *) lfirst(l);
9988  bool found = false;
9989  RmgrId rmid;
9990 
9991  /* Check for 'all'. */
9992  if (pg_strcasecmp(tok, "all") == 0)
9993  {
9994  for (rmid = 0; rmid <= RM_MAX_ID; rmid++)
9995  if (RmgrTable[rmid].rm_mask != NULL)
9996  newwalconsistency[rmid] = true;
9997  found = true;
9998  }
9999  else
10000  {
10001  /*
10002  * Check if the token matches with any individual resource
10003  * manager.
10004  */
10005  for (rmid = 0; rmid <= RM_MAX_ID; rmid++)
10006  {
10007  if (pg_strcasecmp(tok, RmgrTable[rmid].rm_name) == 0 &&
10008  RmgrTable[rmid].rm_mask != NULL)
10009  {
10010  newwalconsistency[rmid] = true;
10011  found = true;
10012  }
10013  }
10014  }
10015 
10016  /* If a valid resource manager is found, check for the next one. */
10017  if (!found)
10018  {
10019  GUC_check_errdetail("Unrecognized key word: \"%s\".", tok);
10020  pfree(rawstring);
10021  list_free(elemlist);
10022  return false;
10023  }
10024  }
10025 
10026  pfree(rawstring);
10027  list_free(elemlist);
10028 
10029  /* assign new value */
10030  *extra = guc_malloc(ERROR, (RM_MAX_ID + 1) * sizeof(bool));
10031  memcpy(*extra, newwalconsistency, (RM_MAX_ID + 1) * sizeof(bool));
10032  return true;
10033 }
void(* rm_mask)(char *pagedata, BlockNumber blkno)
#define GUC_check_errdetail
Definition: guc.h:407
char * pstrdup(const char *in)
Definition: mcxt.c:1077
const RmgrData RmgrTable[RM_MAX_ID+1]
Definition: rmgr.c:36
#define MemSet(start, val, len)
Definition: c.h:857
int pg_strcasecmp(const char *s1, const char *s2)
Definition: pgstrcasecmp.c:36
void pfree(void *pointer)
Definition: mcxt.c:950
#define ERROR
Definition: elog.h:43
bool SplitIdentifierString(char *rawstring, char separator, List **namelist)
Definition: varlena.c:3260
#define RM_MAX_ID
Definition: rmgr.h:33
uint8 RmgrId
Definition: rmgr.h:11
#define NULL
Definition: c.h:229
#define lfirst(lc)
Definition: pg_list.h:106
#define newval
void list_free(List *list)
Definition: list.c:1133
static void * guc_malloc(int elevel, size_t size)
Definition: guc.c:3976
Definition: pg_list.h:45
static char* config_enum_get_options ( struct config_enum record,
const char *  prefix,
const char *  suffix,
const char *  separator 
)
static

Definition at line 5666 of file guc.c.

References appendBinaryStringInfo(), appendStringInfoString(), StringInfoData::data, config_enum_entry::hidden, initStringInfo(), StringInfoData::len, config_enum_entry::name, and config_enum::options.

Referenced by GetConfigOptionByNum(), and parse_and_validate_value().

5668 {
5669  const struct config_enum_entry *entry;
5670  StringInfoData retstr;
5671  int seplen;
5672 
5673  initStringInfo(&retstr);
5674  appendStringInfoString(&retstr, prefix);
5675 
5676  seplen = strlen(separator);
5677  for (entry = record->options; entry && entry->name; entry++)
5678  {
5679  if (!entry->hidden)
5680  {
5681  appendStringInfoString(&retstr, entry->name);
5682  appendBinaryStringInfo(&retstr, separator, seplen);
5683  }
5684  }
5685 
5686  /*
5687  * All the entries may have been hidden, leaving the string empty if no
5688  * prefix was given. This indicates a broken GUC setup, since there is no
5689  * use for an enum without any values, so we just check to make sure we
5690  * don't write to invalid memory instead of actually trying to do
5691  * something smart with it.
5692  */
5693  if (retstr.len >= seplen)
5694  {
5695  /* Replace final separator */
5696  retstr.data[retstr.len - seplen] = '\0';
5697  retstr.len -= seplen;
5698  }
5699 
5700  appendStringInfoString(&retstr, suffix);
5701 
5702  return retstr.data;
5703 }
Definition: guc.h:164
const struct config_enum_entry * options
Definition: guc_tables.h:243
void appendStringInfoString(StringInfo str, const char *s)
Definition: stringinfo.c:157
void initStringInfo(StringInfo str)
Definition: stringinfo.c:46
const char * name
Definition: guc.h:166
void appendBinaryStringInfo(StringInfo str, const char *data, int datalen)
Definition: stringinfo.c:208
bool hidden
Definition: guc.h:168
bool config_enum_lookup_by_name ( struct config_enum record,
const char *  value,
int *  retval 
)

Definition at line 5640 of file guc.c.

References FALSE, config_enum_entry::name, config_enum::options, pg_strcasecmp(), TRUE, and config_enum_entry::val.

Referenced by parse_and_validate_value().

5642 {
5643  const struct config_enum_entry *entry;
5644 
5645  for (entry = record->options; entry && entry->name; entry++)
5646  {
5647  if (pg_strcasecmp(value, entry->name) == 0)
5648  {
5649  *retval = entry->val;
5650  return TRUE;
5651  }
5652  }
5653 
5654  *retval = 0;
5655  return FALSE;
5656 }
Definition: guc.h:164
int pg_strcasecmp(const char *s1, const char *s2)
Definition: pgstrcasecmp.c:36
#define FALSE
Definition: c.h:221
static struct @121 value
const struct config_enum_entry * options
Definition: guc_tables.h:243
int val
Definition: guc.h:167
const char * name
Definition: guc.h:166
#define TRUE
Definition: c.h:217
const char* config_enum_lookup_by_value ( struct config_enum record,
int  val 
)

Definition at line 5617 of file guc.c.

References elog, ERROR, config_enum::gen, config_generic::name, config_enum_entry::name, NULL, config_enum::options, and config_enum_entry::val.

Referenced by _ShowOption(), call_enum_check_hook(), estimate_variable_size(), GetConfigOption(), GetConfigOptionByNum(), GetConfigOptionResetString(), printMixedStruct(), and serialize_variable().

5618 {
5619  const struct config_enum_entry *entry;
5620 
5621  for (entry = record->options; entry && entry->name; entry++)
5622  {
5623  if (entry->val == val)
5624  return entry->name;
5625  }
5626 
5627  elog(ERROR, "could not find enum option %d for %s",
5628  val, record->gen.name);
5629  return NULL; /* silence compiler */
5630 }
Definition: guc.h:164
const char * name
Definition: guc_tables.h:146
#define ERROR
Definition: elog.h:43
const struct config_enum_entry * options
Definition: guc_tables.h:243
int val
Definition: guc.h:167
struct config_generic gen
Definition: guc_tables.h:239
#define NULL
Definition: c.h:229
const char * name
Definition: guc.h:166
#define elog
Definition: elog.h:219
long val
Definition: informix.c:689
static void convert_from_base_unit ( int64  base_value,
int  base_unit,
int64 *  value,
const char **  unit 
)
static

Definition at line 5445 of file guc.c.

References Assert, GUC_UNIT_MEMORY, i, memory_unit_conversion_table, unit_conversion::multiplier, NULL, time_unit_conversion_table, and unit_conversion::unit.

Referenced by _ShowOption().

5447 {
5448  const unit_conversion *table;
5449  int i;
5450 
5451  *unit = NULL;
5452 
5453  if (base_unit & GUC_UNIT_MEMORY)
5455  else
5457 
5458  for (i = 0; *table[i].unit; i++)
5459  {
5460  if (base_unit == table[i].base_unit)
5461  {
5462  /*
5463  * Accept the first conversion that divides the value evenly. We
5464  * assume that the conversions for each base unit are ordered from
5465  * greatest unit to the smallest!
5466  */
5467  if (table[i].multiplier < 0)
5468  {
5469  *value = base_value * (-table[i].multiplier);
5470  *unit = table[i].unit;
5471  break;
5472  }
5473  else if (base_value % table[i].multiplier == 0)
5474  {
5475  *value = base_value / table[i].multiplier;
5476  *unit = table[i].unit;
5477  break;
5478  }
5479  }
5480  }
5481 
5482  Assert(*unit != NULL);
5483 }
static const unit_conversion time_unit_conversion_table[]
Definition: guc.c:750
static const unit_conversion memory_unit_conversion_table[]
Definition: guc.c:723
static struct @121 value
#define NULL
Definition: c.h:229
#define Assert(condition)
Definition: c.h:675
int i
char unit[MAX_UNIT_LEN+1]
Definition: guc.c:702
#define GUC_UNIT_MEMORY
Definition: guc.h:222
int multiplier
Definition: guc.c:705
static bool convert_to_base_unit ( int64  value,
const char *  unit,
int  base_unit,
int64 *  base_value 
)
static

Definition at line 5412 of file guc.c.

References GUC_UNIT_MEMORY, i, memory_unit_conversion_table, unit_conversion::multiplier, time_unit_conversion_table, and unit_conversion::unit.

Referenced by parse_int().

5414 {
5415  const unit_conversion *table;
5416  int i;
5417 
5418  if (base_unit & GUC_UNIT_MEMORY)
5420  else
5422 
5423  for (i = 0; *table[i].unit; i++)
5424  {
5425  if (base_unit == table[i].base_unit &&
5426  strcmp(unit, table[i].unit) == 0)
5427  {
5428  if (table[i].multiplier < 0)
5429  *base_value = value / (-table[i].multiplier);
5430  else
5431  *base_value = value * table[i].multiplier;
5432  return true;
5433  }
5434  }
5435  return false;
5436 }
static const unit_conversion time_unit_conversion_table[]
Definition: guc.c:750
static const unit_conversion memory_unit_conversion_table[]
Definition: guc.c:723
static struct @121 value
int i
char unit[MAX_UNIT_LEN+1]
Definition: guc.c:702
#define GUC_UNIT_MEMORY
Definition: guc.h:222
int multiplier
Definition: guc.c:705
static void define_custom_variable ( struct config_generic variable)
static

Definition at line 7548 of file guc.c.

References add_guc_variable(), Assert, ereport, errcode(), errmsg(), ERROR, free, config_string::gen, GUC_ACTION_SET, GUC_CUSTOM_PLACEHOLDER, guc_var_compare(), InitializeOneGUCOption(), config_generic::name, name, NULL, PGC_STRING, reapply_stacked_values(), config_generic::reset_scontext, config_generic::reset_source, config_string::reset_val, config_generic::scontext, set_config_option(), set_config_sourcefile(), set_string_field(), config_generic::source, config_generic::sourcefile, config_generic::sourceline, config_generic::stack, config_string::variable, and WARNING.

Referenced by DefineCustomBoolVariable(), DefineCustomEnumVariable(), DefineCustomIntVariable(), DefineCustomRealVariable(), and DefineCustomStringVariable().

7549 {
7550  const char *name = variable->name;
7551  const char **nameAddr = &name;
7552  struct config_string *pHolder;
7553  struct config_generic **res;
7554 
7555  /*
7556  * See if there's a placeholder by the same name.
7557  */
7558  res = (struct config_generic **) bsearch((void *) &nameAddr,
7559  (void *) guc_variables,
7561  sizeof(struct config_generic *),
7562  guc_var_compare);
7563  if (res == NULL)
7564  {
7565  /*
7566  * No placeholder to replace, so we can just add it ... but first,
7567  * make sure it's initialized to its default value.
7568  */
7569  InitializeOneGUCOption(variable);
7570  add_guc_variable(variable, ERROR);
7571  return;
7572  }
7573 
7574  /*
7575  * This better be a placeholder
7576  */
7577  if (((*res)->flags & GUC_CUSTOM_PLACEHOLDER) == 0)
7578  ereport(ERROR,
7579  (errcode(ERRCODE_INTERNAL_ERROR),
7580  errmsg("attempt to redefine parameter \"%s\"", name)));
7581 
7582  Assert((*res)->vartype == PGC_STRING);
7583  pHolder = (struct config_string *) (*res);
7584 
7585  /*
7586  * First, set the variable to its default value. We must do this even
7587  * though we intend to immediately apply a new value, since it's possible
7588  * that the new value is invalid.
7589  */
7590  InitializeOneGUCOption(variable);
7591 
7592  /*
7593  * Replace the placeholder. We aren't changing the name, so no re-sorting
7594  * is necessary
7595  */
7596  *res = variable;
7597 
7598  /*
7599  * Assign the string value(s) stored in the placeholder to the real
7600  * variable. Essentially, we need to duplicate all the active and stacked
7601  * values, but with appropriate validation and datatype adjustment.
7602  *
7603  * If an assignment fails, we report a WARNING and keep going. We don't
7604  * want to throw ERROR for bad values, because it'd bollix the add-on
7605  * module that's presumably halfway through getting loaded. In such cases
7606  * the default or previous state will become active instead.
7607  */
7608 
7609  /* First, apply the reset value if any */
7610  if (pHolder->reset_val)
7611  (void) set_config_option(name, pHolder->reset_val,
7612  pHolder->gen.reset_scontext,
7613  pHolder->gen.reset_source,
7614  GUC_ACTION_SET, true, WARNING, false);
7615  /* That should not have resulted in stacking anything */
7616  Assert(variable->stack == NULL);
7617 
7618  /* Now, apply current and stacked values, in the order they were stacked */
7619  reapply_stacked_values(variable, pHolder, pHolder->gen.stack,
7620  *(pHolder->variable),
7621  pHolder->gen.scontext, pHolder->gen.source);
7622 
7623  /* Also copy over any saved source-location information */
7624  if (pHolder->gen.sourcefile)
7625  set_config_sourcefile(name, pHolder->gen.sourcefile,
7626  pHolder->gen.sourceline);
7627 
7628  /*
7629  * Free up as much as we conveniently can of the placeholder structure.
7630  * (This neglects any stack items, so it's possible for some memory to be
7631  * leaked. Since this can only happen once per session per variable, it
7632  * doesn't seem worth spending much code on.)
7633  */
7634  set_string_field(pHolder, pHolder->variable, NULL);
7635  set_string_field(pHolder, &pHolder->reset_val, NULL);
7636 
7637  free(pHolder);
7638 }
GucSource source
Definition: guc_tables.h:155
static void static void set_config_sourcefile(const char *name, char *sourcefile, int sourceline)
Definition: guc.c:6638
char ** variable
Definition: guc_tables.h:227
const char * name
Definition: guc_tables.h:146
static void reapply_stacked_values(struct config_generic *variable, struct config_string *pHolder, GucStack *stack, const char *curvalue, GucContext curscontext, GucSource cursource)
Definition: guc.c:7648
int errcode(int sqlerrcode)
Definition: elog.c:575
GucContext scontext
Definition: guc_tables.h:157
static int guc_var_compare(const void *a, const void *b)
Definition: guc.c:4421
#define ERROR
Definition: elog.h:43
static int num_guc_variables
Definition: guc.c:3938
char * sourcefile
Definition: guc_tables.h:161
GucSource reset_source
Definition: guc_tables.h:156
static void InitializeOneGUCOption(struct config_generic *gconf)
Definition: guc.c:4569
static void set_string_field(struct config_string *conf, char **field, char *newval)
Definition: guc.c:4048
#define ereport(elevel, rest)
Definition: elog.h:122
static struct config_generic ** guc_variables
Definition: guc.c:3935
#define WARNING
Definition: elog.h:40
struct config_generic gen
Definition: guc_tables.h:225
#define free(a)
Definition: header.h:65
char * reset_val
Definition: guc_tables.h:233
#define NULL
Definition: c.h:229
#define Assert(condition)
Definition: c.h:675
#define GUC_CUSTOM_PLACEHOLDER
Definition: guc.h:211
const char * name
Definition: encode.c:521
int errmsg(const char *fmt,...)
Definition: elog.c:797
GucStack * stack
Definition: guc_tables.h:159
int set_config_option(const char *name, const char *value, GucContext context, GucSource source, GucAction action, bool changeVal, int elevel, bool is_reload)
Definition: guc.c:5908
static bool add_guc_variable(struct config_generic *var, int elevel)
Definition: guc.c:4286
GucContext reset_scontext
Definition: guc_tables.h:158
void DefineCustomBoolVariable ( const char *  name,
const char *  short_desc,
const char *  long_desc,
bool valueAddr,
bool  bootValue,
GucContext  context,
int  flags,
GucBoolCheckHook  check_hook,
GucBoolAssignHook  assign_hook,
GucShowHook  show_hook 
)

Definition at line 7729 of file guc.c.

References config_bool::assign_hook, config_bool::boot_val, config_bool::check_hook, define_custom_variable(), config_bool::gen, init_custom_variable(), PGC_BOOL, config_bool::reset_val, config_bool::show_hook, and config_bool::variable.

Referenced by _PG_init().

7739 {
7740  struct config_bool *var;
7741 
7742  var = (struct config_bool *)
7743  init_custom_variable(name, short_desc, long_desc, context, flags,
7744  PGC_BOOL, sizeof(struct config_bool));
7745  var->variable = valueAddr;
7746  var->boot_val = bootValue;
7747  var->reset_val = bootValue;
7748  var->check_hook = check_hook;
7749  var->assign_hook = assign_hook;
7750  var->show_hook = show_hook;
7751  define_custom_variable(&var->gen);
7752 }
bool * variable
Definition: guc_tables.h:181
GucBoolAssignHook assign_hook
Definition: guc_tables.h:184
bool boot_val
Definition: guc_tables.h:182
struct config_generic gen
Definition: guc_tables.h:179
static struct config_generic * init_custom_variable(const char *name, const char *short_desc, const char *long_desc, GucContext context, int flags, enum config_type type, size_t sz)
Definition: guc.c:7497
GucBoolCheckHook check_hook
Definition: guc_tables.h:183
GucShowHook show_hook
Definition: guc_tables.h:185
const char * name
Definition: encode.c:521
bool reset_val
Definition: guc_tables.h:187
static void define_custom_variable(struct config_generic *variable)
Definition: guc.c:7548
void DefineCustomEnumVariable ( const char *  name,
const char *  short_desc,
const char *  long_desc,
int *  valueAddr,
int  bootValue,
const struct config_enum_entry options,
GucContext  context,
int  flags,
GucEnumCheckHook  check_hook,
GucEnumAssignHook  assign_hook,
GucShowHook  show_hook 
)

Definition at line 7840 of file guc.c.

References config_enum::assign_hook, config_enum::boot_val, config_enum::check_hook, define_custom_variable(), config_enum::gen, init_custom_variable(), options, config_enum::options, PGC_ENUM, config_enum::reset_val, config_enum::show_hook, and config_enum::variable.

Referenced by _PG_init().

7851 {
7852  struct config_enum *var;
7853 
7854  var = (struct config_enum *)
7855  init_custom_variable(name, short_desc, long_desc, context, flags,
7856  PGC_ENUM, sizeof(struct config_enum));
7857  var->variable = valueAddr;
7858  var->boot_val = bootValue;
7859  var->reset_val = bootValue;
7860  var->options = options;
7861  var->check_hook = check_hook;
7862  var->assign_hook = assign_hook;
7863  var->show_hook = show_hook;
7864  define_custom_variable(&var->gen);
7865 }
GucEnumCheckHook check_hook
Definition: guc_tables.h:244
GucEnumAssignHook assign_hook
Definition: guc_tables.h:245
int * variable
Definition: guc_tables.h:241
const struct config_enum_entry * options
Definition: guc_tables.h:243
static char ** options
static struct config_generic * init_custom_variable(const char *name, const char *short_desc, const char *long_desc, GucContext context, int flags, enum config_type type, size_t sz)
Definition: guc.c:7497
GucShowHook show_hook
Definition: guc_tables.h:246
struct config_generic gen
Definition: guc_tables.h:239
const char * name
Definition: encode.c:521
static void define_custom_variable(struct config_generic *variable)
Definition: guc.c:7548
void DefineCustomIntVariable ( const char *  name,
const char *  short_desc,
const char *  long_desc,
int *  valueAddr,
int  bootValue,
int  minValue,
int  maxValue,
GucContext  context,
int  flags,
GucIntCheckHook  check_hook,
GucIntAssignHook  assign_hook,
GucShowHook  show_hook 
)

Definition at line 7755 of file guc.c.

References config_int::assign_hook, config_int::boot_val, config_int::check_hook, define_custom_variable(), config_int::gen, init_custom_variable(), config_int::max, config_int::min, PGC_INT, config_int::reset_val, config_int::show_hook, and config_int::variable.

Referenced by _PG_init().

7767 {
7768  struct config_int *var;
7769 
7770  var = (struct config_int *)
7771  init_custom_variable(name, short_desc, long_desc, context, flags,
7772  PGC_INT, sizeof(struct config_int));
7773  var->variable = valueAddr;
7774  var->boot_val = bootValue;
7775  var->reset_val = bootValue;
7776  var->min = minValue;
7777  var->max = maxValue;
7778  var->check_hook = check_hook;
7779  var->assign_hook = assign_hook;
7780  var->show_hook = show_hook;
7781  define_custom_variable(&var->gen);
7782 }
int boot_val
Definition: guc_tables.h:196
GucIntAssignHook assign_hook
Definition: guc_tables.h:200
GucIntCheckHook check_hook
Definition: guc_tables.h:199
GucShowHook show_hook
Definition: guc_tables.h:201
int * variable
Definition: guc_tables.h:195
struct config_generic gen
Definition: guc_tables.h:193
static struct config_generic * init_custom_variable(const char *name, const char *short_desc, const char *long_desc, GucContext context, int flags, enum config_type type, size_t sz)
Definition: guc.c:7497
const char * name
Definition: encode.c:521
static void define_custom_variable(struct config_generic *variable)
Definition: guc.c:7548
int reset_val
Definition: guc_tables.h:203
void DefineCustomRealVariable ( const char *  name,
const char *  short_desc,
const char *  long_desc,
double *  valueAddr,
double  bootValue,
double  minValue,
double  maxValue,
GucContext  context,
int  flags,
GucRealCheckHook  check_hook,
GucRealAssignHook  assign_hook,
GucShowHook  show_hook 
)

Definition at line 7785 of file guc.c.

References config_real::assign_hook, config_real::boot_val, config_real::check_hook, define_custom_variable(), config_real::gen, init_custom_variable(), config_real::max, config_real::min, PGC_REAL, config_real::reset_val, config_real::show_hook, and config_real::variable.

Referenced by _PG_init().

7797 {
7798  struct config_real *var;
7799 
7800  var = (struct config_real *)
7801  init_custom_variable(name, short_desc, long_desc, context, flags,
7802  PGC_REAL, sizeof(struct config_real));
7803  var->variable = valueAddr;
7804  var->boot_val = bootValue;
7805  var->reset_val = bootValue;
7806  var->min = minValue;
7807  var->max = maxValue;
7808  var->check_hook = check_hook;
7809  var->assign_hook = assign_hook;
7810  var->show_hook = show_hook;
7811  define_custom_variable(&var->gen);
7812 }
GucRealAssignHook assign_hook
Definition: guc_tables.h:216
double reset_val
Definition: guc_tables.h:219
GucRealCheckHook check_hook
Definition: guc_tables.h:215
GucShowHook show_hook
Definition: guc_tables.h:217
double * variable
Definition: guc_tables.h:211
static struct config_generic * init_custom_variable(const char *name, const char *short_desc, const char *long_desc, GucContext context, int flags, enum config_type type, size_t sz)
Definition: guc.c:7497
double max
Definition: guc_tables.h:214
double boot_val
Definition: guc_tables.h:212
const char * name
Definition: encode.c:521
double min
Definition: guc_tables.h:213
static void define_custom_variable(struct config_generic *variable)
Definition: guc.c:7548
struct config_generic gen
Definition: guc_tables.h:209
void DefineCustomStringVariable ( const char *  name,
const char *  short_desc,
const char *  long_desc,
char **  valueAddr,
const char *  bootValue,
GucContext  context,
int  flags,
GucStringCheckHook  check_hook,
GucStringAssignHook  assign_hook,
GucShowHook  show_hook 
)

Definition at line 7815 of file guc.c.

References config_string::assign_hook, config_string::boot_val, config_string::check_hook, define_custom_variable(), config_string::gen, init_custom_variable(), PGC_STRING, config_string::show_hook, and config_string::variable.

Referenced by _PG_init().

7825 {
7826  struct config_string *var;
7827 
7828  var = (struct config_string *)
7829  init_custom_variable(name, short_desc, long_desc, context, flags,
7830  PGC_STRING, sizeof(struct config_string));
7831  var->variable = valueAddr;
7832  var->boot_val = bootValue;
7833  var->check_hook = check_hook;
7834  var->assign_hook = assign_hook;
7835  var->show_hook = show_hook;
7836  define_custom_variable(&var->gen);
7837 }
char ** variable
Definition: guc_tables.h:227
GucStringCheckHook check_hook
Definition: guc_tables.h:229
const char * boot_val
Definition: guc_tables.h:228
GucShowHook show_hook
Definition: guc_tables.h:231
static struct config_generic * init_custom_variable(const char *name, const char *short_desc, const char *long_desc, GucContext context, int flags, enum config_type type, size_t sz)
Definition: guc.c:7497
struct config_generic gen
Definition: guc_tables.h:225
GucStringAssignHook assign_hook
Definition: guc_tables.h:230
const char * name
Definition: encode.c:521
static void define_custom_variable(struct config_generic *variable)
Definition: guc.c:7548
static void discard_stack_value ( struct config_generic gconf,
config_var_value val 
)
static

Definition at line 4163 of file guc.c.

References config_var_value::extra, NULL, PGC_BOOL, PGC_ENUM, PGC_INT, PGC_REAL, PGC_STRING, set_extra_field(), set_string_field(), config_var_val::stringval, config_var_value::val, and config_generic::vartype.

Referenced by AtEOXact_GUC(), and push_old_value().

4164 {
4165  switch (gconf->vartype)
4166  {
4167  case PGC_BOOL:
4168  case PGC_INT:
4169  case PGC_REAL:
4170  case PGC_ENUM:
4171  /* no need to do anything */
4172  break;
4173  case PGC_STRING:
4174  set_string_field((struct config_string *) gconf,
4175  &(val->val.stringval),
4176  NULL);
4177  break;
4178  }
4179  set_extra_field(gconf, &(val->extra), NULL);
4180 }
union config_var_val val
Definition: guc_tables.h:46
static void set_extra_field(struct config_generic *gconf, void **field, void *newval)
Definition: guc.c:4109
static void set_string_field(struct config_string *conf, char **field, char *newval)
Definition: guc.c:4048
enum config_type vartype
Definition: guc_tables.h:153
#define NULL
Definition: c.h:229
char * stringval
Definition: guc_tables.h:36
static void do_serialize ( char **  destptr,
Size maxbytes,
const char *  fmt,
  ... 
)
static

Definition at line 9114 of file guc.c.

References elog, ERROR, and vsnprintf().

Referenced by serialize_variable().

9115 {
9116  va_list vargs;
9117  int n;
9118 
9119  if (*maxbytes <= 0)
9120  elog(ERROR, "not enough space to serialize GUC state");
9121 
9122  va_start(vargs, fmt);
9123  n = vsnprintf(*destptr, *maxbytes, fmt, vargs);
9124  va_end(vargs);
9125 
9126  /*
9127  * Cater to portability hazards in the vsnprintf() return value just like
9128  * appendPQExpBufferVA() does. Note that this requires an extra byte of
9129  * slack at the end of the buffer. Since serialize_variable() ends with a
9130  * do_serialize_binary() rather than a do_serialize(), we'll always have
9131  * that slack; estimate_variable_size() need not add a byte for it.
9132  */
9133  if (n < 0 || n >= *maxbytes - 1)
9134  {
9135  if (n < 0 && errno != 0 && errno != ENOMEM)
9136  /* Shouldn't happen. Better show errno description. */
9137  elog(ERROR, "vsnprintf failed: %m");
9138  else
9139  elog(ERROR, "not enough space to serialize GUC state");
9140  }
9141 
9142  /* Shift the destptr ahead of the null terminator */
9143  *destptr += n + 1;
9144  *maxbytes -= n + 1;
9145 }
int int vsnprintf(char *str, size_t count, const char *fmt, va_list args)
#define ERROR
Definition: elog.h:43
#define elog
Definition: elog.h:219
static void do_serialize_binary ( char **  destptr,
Size maxbytes,
void *  val,
Size  valsize 
)
static

Definition at line 9149 of file guc.c.

References elog, and ERROR.

Referenced by serialize_variable().

9150 {
9151  if (valsize > *maxbytes)
9152  elog(ERROR, "not enough space to serialize GUC state");
9153 
9154  memcpy(*destptr, val, valsize);
9155  *destptr += valsize;
9156  *maxbytes -= valsize;
9157 }
#define ERROR
Definition: elog.h:43
#define elog
Definition: elog.h:219
long val
Definition: informix.c:689
void EmitWarningsOnPlaceholders ( const char *  className)

Definition at line 7868 of file guc.c.

References ereport, errcode(), errmsg(), config_generic::flags, GUC_CUSTOM_PLACEHOLDER, GUC_QUALIFIER_SEPARATOR, i, config_generic::name, num_guc_variables, and WARNING.

Referenced by _PG_init().

7869 {
7870  int classLen = strlen(className);
7871  int i;
7872 
7873  for (i = 0; i < num_guc_variables; i++)
7874  {
7875  struct config_generic *var = guc_variables[i];
7876 
7877  if ((var->flags & GUC_CUSTOM_PLACEHOLDER) != 0 &&
7878  strncmp(className, var->name, classLen) == 0 &&
7879  var->name[classLen] == GUC_QUALIFIER_SEPARATOR)
7880  {
7881  ereport(WARNING,
7882  (errcode(ERRCODE_UNDEFINED_OBJECT),
7883  errmsg("unrecognized configuration parameter \"%s\"",
7884  var->name)));
7885  }
7886  }
7887 }
const char * name
Definition: guc_tables.h:146
int errcode(int sqlerrcode)
Definition: elog.c:575
#define GUC_QUALIFIER_SEPARATOR
Definition: guc.h:199
static int num_guc_variables
Definition: guc.c:3938
#define ereport(elevel, rest)
Definition: elog.h:122
static struct config_generic ** guc_variables
Definition: guc.c:3935
#define WARNING
Definition: elog.h:40
#define GUC_CUSTOM_PLACEHOLDER
Definition: guc.h:211
int errmsg(const char *fmt,...)
Definition: elog.c:797
int i
static Size estimate_variable_size ( struct config_generic gconf)
static

Definition at line 8993 of file guc.c.

References Abs, add_size(), can_skip_gucvar(), config_enum_lookup_by_value(), config_generic::name, PGC_BOOL, PGC_ENUM, PGC_INT, PGC_REAL, PGC_STRING, REALTYPE_PRECISION, config_generic::scontext, config_generic::source, config_generic::sourcefile, config_generic::sourceline, config_int::variable, config_string::variable, config_enum::variable, and config_generic::vartype.

Referenced by EstimateGUCStateSpace().

8994 {
8995  Size size;
8996  Size valsize = 0;
8997 
8998  if (can_skip_gucvar(gconf))
8999  return 0;
9000 
9001  /* Name, plus trailing zero byte. */
9002  size = strlen(gconf->name) + 1;
9003 
9004  /* Get the maximum display length of the GUC value. */
9005  switch (gconf->vartype)
9006  {
9007  case PGC_BOOL:
9008  {
9009  valsize = 5; /* max(strlen('true'), strlen('false')) */
9010  }
9011  break;
9012 
9013  case PGC_INT:
9014  {
9015  struct config_int *conf = (struct config_int *) gconf;
9016 
9017  /*
9018  * Instead of getting the exact display length, use max
9019  * length. Also reduce the max length for typical ranges of
9020  * small values. Maximum value is 2147483647, i.e. 10 chars.
9021  * Include one byte for sign.
9022  */
9023  if (Abs(*conf->variable) < 1000)
9024  valsize = 3 + 1;
9025  else
9026  valsize = 10 + 1;
9027  }
9028  break;
9029 
9030  case PGC_REAL:
9031  {
9032  /*
9033  * We are going to print it with %e with REALTYPE_PRECISION
9034  * fractional digits. Account for sign, leading digit,
9035  * decimal point, and exponent with up to 3 digits. E.g.
9036  * -3.99329042340000021e+110
9037  */
9038  valsize = 1 + 1 + 1 + REALTYPE_PRECISION + 5;
9039  }
9040  break;
9041 
9042  case PGC_STRING:
9043  {
9044  struct config_string *conf = (struct config_string *) gconf;
9045 
9046  /*
9047  * If the value is NULL, we transmit it as an empty string.
9048  * Although this is not physically the same value, GUC
9049  * generally treats a NULL the same as empty string.
9050  */
9051  if (*conf->variable)
9052  valsize = strlen(*conf->variable);
9053  else
9054  valsize = 0;
9055  }
9056  break;
9057 
9058  case PGC_ENUM:
9059  {
9060  struct config_enum *conf = (struct config_enum *) gconf;
9061 
9062  valsize = strlen(config_enum_lookup_by_value(conf, *conf->variable));
9063  }
9064  break;
9065  }
9066 
9067  /* Allow space for terminating zero-byte for value */
9068  size = add_size(size, valsize + 1);
9069 
9070  if (gconf->sourcefile)
9071  size = add_size(size, strlen(gconf->sourcefile));
9072 
9073  /* Allow space for terminating zero-byte for sourcefile */
9074  size = add_size(size, 1);
9075 
9076  /* Include line whenever file is nonempty. */
9077  if (gconf->sourcefile && gconf->sourcefile[0])
9078  size = add_size(size, sizeof(gconf->sourceline));
9079 
9080  size = add_size(size, sizeof(gconf->source));
9081  size = add_size(size, sizeof(gconf->scontext));
9082 
9083  return size;
9084 }
GucSource source
Definition: guc_tables.h:155
char ** variable
Definition: guc_tables.h:227
const char * name
Definition: guc_tables.h:146
const char * config_enum_lookup_by_value(struct config_enum *record, int val)
Definition: guc.c:5617
GucContext scontext
Definition: guc_tables.h:157
#define Abs(x)
Definition: c.h:812
int * variable
Definition: guc_tables.h:195
int * variable
Definition: guc_tables.h:241
char * sourcefile
Definition: guc_tables.h:161
static bool can_skip_gucvar(struct config_generic *gconf)
Definition: guc.c:8980
#define REALTYPE_PRECISION
Definition: guc.c:110
enum config_type vartype
Definition: guc_tables.h:153
Size add_size(Size s1, Size s2)
Definition: shmem.c:475
size_t Size
Definition: c.h:356
Size EstimateGUCStateSpace ( void  )

Definition at line 9091 of file guc.c.

References add_size(), estimate_variable_size(), i, and num_guc_variables.

Referenced by InitializeParallelDSM().

9092 {
9093  Size size;
9094  int i;
9095 
9096  /* Add space reqd for saving the data size of the guc state */
9097  size = sizeof(Size);
9098 
9099  /* Add up the space needed for each GUC variable */
9100  for (i = 0; i < num_guc_variables; i++)
9101  size = add_size(size,
9103 
9104  return size;
9105 }
static int num_guc_variables
Definition: guc.c:3938
static struct config_generic ** guc_variables
Definition: guc.c:3935
Size add_size(Size s1, Size s2)
Definition: shmem.c:475
size_t Size
Definition: c.h:356
static Size estimate_variable_size(struct config_generic *gconf)
Definition: guc.c:8993
int i
void ExecSetVariableStmt ( VariableSetStmt stmt,
bool  isTopLevel 
)

Definition at line 7285 of file guc.c.

References DefElem::arg, VariableSetStmt::args, Assert, DefElem::defname, elog, ereport, errcode(), errmsg(), ERROR, ExtractSetVariableArgs(), GUC_ACTION_LOCAL, GUC_ACTION_SET, ImportSnapshot(), VariableSetStmt::is_local, IsInParallelMode(), VariableSetStmt::kind, lfirst, linitial_node, list_make1, VariableSetStmt::name, nodeTag, NULL, PGC_S_SESSION, PGC_SUSET, PGC_USERSET, ResetAllOptions(), set_config_option(), SetPGVariable(), strVal, superuser(), T_String, A_Const::val, VAR_RESET, VAR_RESET_ALL, VAR_SET_CURRENT, VAR_SET_DEFAULT, VAR_SET_MULTI, VAR_SET_VALUE, and WarnNoTransactionChain().

Referenced by standard_ProcessUtility().

7286 {
7288 
7289  /*
7290  * Workers synchronize these parameters at the start of the parallel
7291  * operation; then, we block SET during the operation.
7292  */
7293  if (IsInParallelMode())
7294  ereport(ERROR,
7295  (errcode(ERRCODE_INVALID_TRANSACTION_STATE),
7296  errmsg("cannot set parameters during a parallel operation")));
7297 
7298  switch (stmt->kind)
7299  {
7300  case VAR_SET_VALUE:
7301  case VAR_SET_CURRENT:
7302  if (stmt->is_local)
7303  WarnNoTransactionChain(isTopLevel, "SET LOCAL");
7304  (void) set_config_option(stmt->name,
7305  ExtractSetVariableArgs(stmt),
7307  PGC_S_SESSION,
7308  action, true, 0, false);
7309  break;
7310  case VAR_SET_MULTI:
7311 
7312  /*
7313  * Special-case SQL syntaxes. The TRANSACTION and SESSION
7314  * CHARACTERISTICS cases effectively set more than one variable
7315  * per statement. TRANSACTION SNAPSHOT only takes one argument,
7316  * but we put it here anyway since it's a special case and not
7317  * related to any GUC variable.
7318  */
7319  if (strcmp(stmt->name, "TRANSACTION") == 0)
7320  {
7321  ListCell *head;
7322 
7323  WarnNoTransactionChain(isTopLevel, "SET TRANSACTION");
7324 
7325  foreach(head, stmt->args)
7326  {
7327  DefElem *item = (DefElem *) lfirst(head);
7328 
7329  if (strcmp(item->defname, "transaction_isolation") == 0)
7330  SetPGVariable("transaction_isolation",
7331  list_make1(item->arg), stmt->is_local);
7332  else if (strcmp(item->defname, "transaction_read_only") == 0)
7333  SetPGVariable("transaction_read_only",
7334  list_make1(item->arg), stmt->is_local);
7335  else if (strcmp(item->defname, "transaction_deferrable") == 0)
7336  SetPGVariable("transaction_deferrable",
7337  list_make1(item->arg), stmt->is_local);
7338  else
7339  elog(ERROR, "unexpected SET TRANSACTION element: %s",
7340  item->defname);
7341  }
7342  }
7343  else if (strcmp(stmt->name, "SESSION CHARACTERISTICS") == 0)
7344  {
7345  ListCell *head;
7346 
7347  foreach(head, stmt->args)
7348  {
7349  DefElem *item = (DefElem *) lfirst(head);
7350 
7351  if (strcmp(item->defname, "transaction_isolation") == 0)
7352  SetPGVariable("default_transaction_isolation",
7353  list_make1(item->arg), stmt->is_local);
7354  else if (strcmp(item->defname, "transaction_read_only") == 0)
7355  SetPGVariable("default_transaction_read_only",
7356  list_make1(item->arg), stmt->is_local);
7357  else if (strcmp(item->defname, "transaction_deferrable") == 0)
7358  SetPGVariable("default_transaction_deferrable",
7359  list_make1(item->arg), stmt->is_local);
7360  else
7361  elog(ERROR, "unexpected SET SESSION element: %s",
7362  item->defname);
7363  }
7364  }
7365  else if (strcmp(stmt->name, "TRANSACTION SNAPSHOT") == 0)
7366  {
7367  A_Const *con = linitial_node(A_Const, stmt->args);
7368 
7369  if (stmt->is_local)
7370  ereport(ERROR,
7371  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
7372  errmsg("SET LOCAL TRANSACTION SNAPSHOT is not implemented")));
7373 
7374  WarnNoTransactionChain(isTopLevel, "SET TRANSACTION");
7375  Assert(nodeTag(&con->val) == T_String);
7376  ImportSnapshot(strVal(&con->val));
7377  }
7378  else
7379  elog(ERROR, "unexpected SET MULTI element: %s",
7380  stmt->name);
7381  break;
7382  case VAR_SET_DEFAULT:
7383  if (stmt->is_local)
7384  WarnNoTransactionChain(isTopLevel, "SET LOCAL");
7385  /* fall through */
7386  case VAR_RESET:
7387  if (strcmp(stmt->name, "transaction_isolation") == 0)
7388  WarnNoTransactionChain(isTopLevel, "RESET TRANSACTION");
7389 
7390  (void) set_config_option(stmt->name,
7391  NULL,
7393  PGC_S_SESSION,
7394  action, true, 0, false);
7395  break;
7396  case VAR_RESET_ALL:
7397  ResetAllOptions();
7398  break;
7399  }
7400 }
void ImportSnapshot(const char *idstr)
Definition: snapmgr.c:1430
VariableSetKind kind
Definition: parsenodes.h:1957
#define strVal(v)
Definition: value.h:54
int errcode(int sqlerrcode)
Definition: elog.c:575
bool superuser(void)
Definition: superuser.c:47
#define linitial_node(type, l)
Definition: pg_list.h:114
GucAction
Definition: guc.h:191
#define list_make1(x1)
Definition: pg_list.h:139
bool IsInParallelMode(void)
Definition: xact.c:913
#define ERROR
Definition: elog.h:43
Definition: guc.h:75
void ResetAllOptions(void)
Definition: guc.c:4864
#define ereport(elevel, rest)
Definition: elog.h:122
Node * arg
Definition: parsenodes.h:720
void WarnNoTransactionChain(bool isTopLevel, const char *stmtType)
Definition: xact.c:3203
#define NULL
Definition: c.h:229
#define Assert(condition)
Definition: c.h:675
#define lfirst(lc)
Definition: pg_list.h:106
#define nodeTag(nodeptr)
Definition: nodes.h:514
int errmsg(const char *fmt,...)
Definition: elog.c:797
char * defname
Definition: parsenodes.h:719
#define elog
Definition: elog.h:219
char * ExtractSetVariableArgs(VariableSetStmt *stmt)
Definition: guc.c:7409
Value val
Definition: parsenodes.h:287
int set_config_option(const char *name, const char *value, GucContext context, GucSource source, GucAction action, bool changeVal, int elevel, bool is_reload)
Definition: guc.c:5908
void SetPGVariable(const char *name, List *args, bool is_local)
Definition: guc.c:7429
static bool extra_field_used ( struct config_generic gconf,
void *  extra 
)
static

Definition at line 4064 of file guc.c.

References config_var_value::extra, config_generic::extra, guc_stack::masked, PGC_BOOL, PGC_ENUM, PGC_INT, PGC_REAL, PGC_STRING, guc_stack::prev, guc_stack::prior, config_generic::stack, and config_generic::vartype.

Referenced by set_config_option(), and set_extra_field().

4065 {
4066  GucStack *stack;
4067 
4068  if (extra == gconf->extra)
4069  return true;
4070  switch (gconf->vartype)
4071  {
4072  case PGC_BOOL:
4073  if (extra == ((struct config_bool *) gconf)->reset_extra)
4074  return true;
4075  break;
4076  case PGC_INT:
4077  if (extra == ((struct config_int *) gconf)->reset_extra)
4078  return true;
4079  break;
4080  case PGC_REAL:
4081  if (extra == ((struct config_real *) gconf)->reset_extra)
4082  return true;
4083  break;
4084  case PGC_STRING:
4085  if (extra == ((struct config_string *) gconf)->reset_extra)
4086  return true;
4087  break;
4088  case PGC_ENUM:
4089  if (extra == ((struct config_enum *) gconf)->reset_extra)
4090  return true;
4091  break;
4092  }
4093  for (stack = gconf->stack; stack; stack = stack->prev)
4094  {
4095  if (extra == stack->prior.extra ||
4096  extra == stack->masked.extra)
4097  return true;
4098  }
4099 
4100  return false;
4101 }
struct guc_stack * prev
Definition: guc_tables.h:120
config_var_value masked
Definition: guc_tables.h:128
void * reset_extra
Definition: guc_tables.h:249
enum config_type vartype
Definition: guc_tables.h:153
GucStack * stack
Definition: guc_tables.h:159
config_var_value prior
Definition: guc_tables.h:127
char* ExtractSetVariableArgs ( VariableSetStmt stmt)

Definition at line 7409 of file guc.c.

References VariableSetStmt::args, flatten_set_variable_args(), GetConfigOptionByName(), VariableSetStmt::kind, VariableSetStmt::name, NULL, VAR_SET_CURRENT, and VAR_SET_VALUE.

Referenced by AlterSetting(), AlterSystemSetConfigFile(), ExecSetVariableStmt(), and update_proconfig_value().

7410 {
7411  switch (stmt->kind)
7412  {
7413  case VAR_SET_VALUE:
7414  return flatten_set_variable_args(stmt->name, stmt->args);
7415  case VAR_SET_CURRENT:
7416  return GetConfigOptionByName(stmt->name, NULL, false);
7417  default:
7418  return NULL;
7419  }
7420 }
VariableSetKind kind
Definition: parsenodes.h:1957
char * GetConfigOptionByName(const char *name, const char **varname, bool missing_ok)
Definition: guc.c:8035
#define NULL
Definition: c.h:229
static char * flatten_set_variable_args(const char *name, List *args)
Definition: guc.c:6807
static struct config_generic* find_option ( const char *  name,
bool  create_placeholders,
int  elevel 
)
static

Definition at line 4372 of file guc.c.

References add_placeholder_variable(), Assert, guc_name_compare(), GUC_QUALIFIER_SEPARATOR, guc_var_compare(), i, name, and NULL.

Referenced by AlterSystemSetConfigFile(), flatten_set_variable_args(), GetConfigOption(), GetConfigOptionByName(), GetConfigOptionResetString(), GUCArrayAdd(), GUCArrayDelete(), set_config_option(), set_config_sourcefile(), and validate_option_array_item().

4373 {
4374  const char **key = &name;
4375  struct config_generic **res;
4376  int i;
4377 
4378  Assert(name);
4379 
4380  /*
4381  * By equating const char ** with struct config_generic *, we are assuming
4382  * the name field is first in config_generic.
4383  */
4384  res = (struct config_generic **) bsearch((void *) &key,
4385  (void *) guc_variables,
4387  sizeof(struct config_generic *),
4388  guc_var_compare);
4389  if (res)
4390  return *res;
4391 
4392  /*
4393  * See if the name is an obsolete name for a variable. We assume that the
4394  * set of supported old names is short enough that a brute-force search is
4395  * the best way.
4396  */
4397  for (i = 0; map_old_guc_names[i] != NULL; i += 2)
4398  {
4399  if (guc_name_compare(name, map_old_guc_names[i]) == 0)
4400  return find_option(map_old_guc_names[i + 1], false, elevel);
4401  }
4402 
4403  if (create_placeholders)
4404  {
4405  /*
4406  * Check if the name is qualified, and if so, add a placeholder.
4407  */
4408  if (strchr(name, GUC_QUALIFIER_SEPARATOR) != NULL)
4410  }
4411 
4412  /* Unknown name */
4413  return NULL;
4414 }
#define GUC_QUALIFIER_SEPARATOR
Definition: guc.h:199
static int guc_name_compare(const char *namea, const char *nameb)
Definition: guc.c:4433
static int guc_var_compare(const void *a, const void *b)
Definition: guc.c:4421
static int num_guc_variables
Definition: guc.c:3938
static struct config_generic ** guc_variables
Definition: guc.c:3935
static int elevel
Definition: vacuumlazy.c:136
static const char *const map_old_guc_names[]
Definition: guc.c:3925
static struct config_generic * find_option(const char *name, bool create_placeholders, int elevel)
Definition: guc.c:4372
#define NULL
Definition: c.h:229
#define Assert(condition)
Definition: c.h:675
const char * name
Definition: encode.c:521
static struct config_generic * add_placeholder_variable(const char *name, int elevel)
Definition: guc.c:4324
int i
static char* flatten_set_variable_args ( const char *  name,
List args 
)
static

Definition at line 6807 of file guc.c.

References appendStringInfo(), appendStringInfoString(), arg, TypeCast::arg, Assert, buf, CStringGetDatum, StringInfoData::data, DatumGetCString, DirectFunctionCall1, DirectFunctionCall3, elog, ereport, errcode(), errmsg(), ERROR, find_option(), config_generic::flags, GUC_LIST_INPUT, GUC_LIST_QUOTE, initStringInfo(), Int32GetDatum, interval_in(), interval_out(), INTERVALOID, intVal, InvalidOid, IsA, lfirst, list_head(), list_length(), NIL, nodeTag, NULL, ObjectIdGetDatum, quote_identifier(), strVal, T_Float, T_Integer, T_String, TypeCast::typeName, typenameTypeIdAndMod(), A_Const::val, val, and WARNING.

Referenced by ExtractSetVariableArgs(), and SetPGVariable().

6808 {
6809  struct config_generic *record;
6810  int flags;
6812  ListCell *l;
6813 
6814  /* Fast path if just DEFAULT */
6815  if (args == NIL)
6816  return NULL;
6817 
6818  /*
6819  * Get flags for the variable; if it's not known, use default flags.
6820  * (Caller might throw error later, but not our business to do so here.)
6821  */
6822  record = find_option(name, false, WARNING);
6823  if (record)
6824  flags = record->flags;
6825  else
6826  flags = 0;
6827 
6828  /* Complain if list input and non-list variable */
6829  if ((flags & GUC_LIST_INPUT) == 0 &&
6830  list_length(args) != 1)
6831  ereport(ERROR,
6832  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
6833  errmsg("SET %s takes only one argument", name)));
6834 
6835  initStringInfo(&buf);
6836 
6837  /*
6838  * Each list member may be a plain A_Const node, or an A_Const within a
6839  * TypeCast; the latter case is supported only for ConstInterval arguments
6840  * (for SET TIME ZONE).
6841  */
6842  foreach(l, args)
6843  {
6844  Node *arg = (Node *) lfirst(l);
6845  char *val;
6846  TypeName *typeName = NULL;
6847  A_Const *con;
6848 
6849  if (l != list_head(args))
6850  appendStringInfoString(&buf, ", ");
6851 
6852  if (IsA(arg, TypeCast))
6853  {
6854  TypeCast *tc = (TypeCast *) arg;
6855 
6856  arg = tc->arg;
6857  typeName = tc->typeName;
6858  }
6859 
6860  if (!IsA(arg, A_Const))
6861  elog(ERROR, "unrecognized node type: %d", (int) nodeTag(arg));
6862  con = (A_Const *) arg;
6863 
6864  switch (nodeTag(&con->val))
6865  {
6866  case T_Integer:
6867  appendStringInfo(&buf, "%ld", intVal(&con->val));
6868  break;
6869  case T_Float:
6870  /* represented as a string, so just copy it */
6871  appendStringInfoString(&buf, strVal(&con->val));
6872  break;
6873  case T_String:
6874  val = strVal(&con->val);
6875  if (typeName != NULL)
6876  {
6877  /*
6878  * Must be a ConstInterval argument for TIME ZONE. Coerce
6879  * to interval and back to normalize the value and account
6880  * for any typmod.
6881  */
6882  Oid typoid;
6883  int32 typmod;
6884  Datum interval;
6885  char *intervalout;
6886 
6887  typenameTypeIdAndMod(NULL, typeName, &typoid, &typmod);
6888  Assert(typoid == INTERVALOID);
6889 
6890  interval =
6892  CStringGetDatum(val),
6894  Int32GetDatum(typmod));
6895 
6896  intervalout =
6898  interval));
6899  appendStringInfo(&buf, "INTERVAL '%s'", intervalout);
6900  }
6901  else
6902  {
6903  /*
6904  * Plain string literal or identifier. For quote mode,
6905  * quote it if it's not a vanilla identifier.
6906  */
6907  if (flags & GUC_LIST_QUOTE)
6909  else
6910  appendStringInfoString(&buf, val);
6911  }
6912  break;
6913  default:
6914  elog(ERROR, "unrecognized node type: %d",
6915  (int) nodeTag(&con->val));
6916  break;
6917  }
6918  }
6919 
6920  return buf.data;
6921 }
#define NIL
Definition: pg_list.h:69
#define IsA(nodeptr, _type_)
Definition: nodes.h:560
const char * quote_identifier(const char *ident)
Definition: ruleutils.c:10280
Datum interval_in(PG_FUNCTION_ARGS)
Definition: timestamp.c:876
#define GUC_LIST_QUOTE
Definition: guc.h:205
Definition: nodes.h:509
#define strVal(v)
Definition: value.h:54
int errcode(int sqlerrcode)
Definition: elog.c:575
Datum interval_out(PG_FUNCTION_ARGS)
Definition: timestamp.c:958
#define DirectFunctionCall1(func, arg1)
Definition: fmgr.h:584
unsigned int Oid
Definition: postgres_ext.h:31
signed int int32
Definition: c.h:256
void appendStringInfo(StringInfo str, const char *fmt,...)
Definition: stringinfo.c:78
#define ObjectIdGetDatum(X)
Definition: postgres.h:513
#define ERROR
Definition: elog.h:43
#define DatumGetCString(X)
Definition: postgres.h:572
void appendStringInfoString(StringInfo str, const char *s)
Definition: stringinfo.c:157
static char * buf
Definition: pg_test_fsync.c:66
#define CStringGetDatum(X)
Definition: postgres.h:584
#define INTERVALOID
Definition: pg_type.h:529
static ListCell * list_head(const List *l)
Definition: pg_list.h:77
#define ereport(elevel, rest)
Definition: elog.h:122
#define DirectFunctionCall3(func, arg1, arg2, arg3)
Definition: fmgr.h:588
void initStringInfo(StringInfo str)
Definition: stringinfo.c:46
#define WARNING
Definition: elog.h:40
uintptr_t Datum
Definition: postgres.h:372
TypeName * typeName
Definition: parsenodes.h:298
void typenameTypeIdAndMod(ParseState *pstate, const TypeName *typeName, Oid *typeid_p, int32 *typmod_p)
Definition: parse_type.c:293
#define InvalidOid
Definition: postgres_ext.h:36
static struct config_generic * find_option(const char *name, bool create_placeholders, int elevel)
Definition: guc.c:4372
#define NULL
Definition: c.h:229
#define Assert(condition)
Definition: c.h:675
#define lfirst(lc)
Definition: pg_list.h:106
static int list_length(const List *l)
Definition: pg_list.h:89
const char * name
Definition: encode.c:521
#define nodeTag(nodeptr)
Definition: nodes.h:514
Definition: nodes.h:283
#define Int32GetDatum(X)
Definition: postgres.h:485
#define intVal(v)
Definition: value.h:52
int errmsg(const char *fmt,...)
Definition: elog.c:797
void * arg
#define elog
Definition: elog.h:219
Value val
Definition: parsenodes.h:287
long val
Definition: informix.c:689
#define GUC_LIST_INPUT
Definition: guc.h:204
Node * arg
Definition: parsenodes.h:297
struct config_generic** get_guc_variables ( void  )

Definition at line 4187 of file guc.c.

References guc_variables.

Referenced by GucInfoMain().

4188 {
4189  return guc_variables;
4190 }
static struct config_generic ** guc_variables
Definition: guc.c:3935
const char* GetConfigOption ( const char *  name,
bool  missing_ok,
bool  restrict_superuser 
)

Definition at line 6696 of file guc.c.

References buffer, config_enum_lookup_by_value(), DEFAULT_ROLE_READ_ALL_SETTINGS, ereport, errcode(), errmsg(), ERROR, find_option(), config_generic::flags, GetUserId(), GUC_SUPERUSER_ONLY, is_member_of_role(), NULL, PGC_BOOL, PGC_ENUM, PGC_INT, PGC_REAL, PGC_STRING, snprintf(), and config_generic::vartype.

Referenced by applyRemoteGucs(), and PostmasterMain().

6697 {
6698  struct config_generic *record;
6699  static char buffer[256];
6700 
6701  record = find_option(name, false, ERROR);
6702  if (record == NULL)
6703  {
6704  if (missing_ok)
6705  return NULL;
6706  ereport(ERROR,
6707  (errcode(ERRCODE_UNDEFINED_OBJECT),
6708  errmsg("unrecognized configuration parameter \"%s\"",
6709  name)));
6710  }
6711  if (restrict_superuser &&
6712  (record->flags & GUC_SUPERUSER_ONLY) &&
6714  ereport(ERROR,
6715  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
6716  errmsg("must be superuser or a member of pg_read_all_settings to examine \"%s\"",
6717  name)));
6718 
6719  switch (record->vartype)
6720  {
6721  case PGC_BOOL:
6722  return *((struct config_bool *) record)->variable ? "on" : "off";
6723 
6724  case PGC_INT:
6725  snprintf(buffer, sizeof(buffer), "%d",
6726  *((struct config_int *) record)->variable);
6727  return buffer;
6728 
6729  case PGC_REAL:
6730  snprintf(buffer, sizeof(buffer), "%g",
6731  *((struct config_real *) record)->variable);
6732  return buffer;
6733 
6734  case PGC_STRING:
6735  return *((struct config_string *) record)->variable;
6736 
6737  case PGC_ENUM:
6738  return config_enum_lookup_by_value((struct config_enum *) record,
6739  *((struct config_enum *) record)->variable);
6740  }
6741  return NULL;
6742 }
Oid GetUserId(void)
Definition: miscinit.c:284
int errcode(int sqlerrcode)
Definition: elog.c:575
const char * config_enum_lookup_by_value(struct config_enum *record, int val)
Definition: guc.c:5617
int snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
enum config_type vartype
Definition: guc_tables.h:153
#define GUC_SUPERUSER_ONLY
Definition: guc.h:212
bool is_member_of_role(Oid member, Oid role)
Definition: acl.c:4837
#define DEFAULT_ROLE_READ_ALL_SETTINGS
Definition: pg_authid.h:106
static struct config_generic * find_option(const char *name, bool create_placeholders, int elevel)
Definition: guc.c:4372
#define NULL
Definition: c.h:229
WalTimeSample buffer[LAG_TRACKER_BUFFER_SIZE]
Definition: walsender.c:214
const char * name
Definition: encode.c:521
int errmsg(const char *fmt,...)
Definition: elog.c:797
char* GetConfigOptionByName ( const char *  name,
const char **  varname,
bool  missing_ok 
)

Definition at line 8035 of file guc.c.

References _ShowOption(), DEFAULT_ROLE_READ_ALL_SETTINGS, ereport, errcode(), errmsg(), ERROR, find_option(), config_generic::flags, GetUserId(), GUC_SUPERUSER_ONLY, is_member_of_role(), config_generic::name, and NULL.

Referenced by ExtractSetVariableArgs(), GetPGVariableResultDesc(), set_config_by_name(), show_config_by_name(), show_config_by_name_missing_ok(), and ShowGUCConfigOption().

8036 {
8037  struct config_generic *record;
8038 
8039  record = find_option(name, false, ERROR);
8040  if (record == NULL)
8041  {
8042  if (missing_ok)
8043  {
8044  if (varname)
8045  *varname = NULL;
8046  return NULL;
8047  }
8048 
8049  ereport(ERROR,
8050  (errcode(ERRCODE_UNDEFINED_OBJECT),
8051  errmsg("unrecognized configuration parameter \"%s\"", name)));
8052  }
8053 
8054  if ((record->flags & GUC_SUPERUSER_ONLY) &&
8056  ereport(ERROR,
8057  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
8058  errmsg("must be superuser or a member of pg_read_all_settings to examine \"%s\"",
8059  name)));
8060 
8061  if (varname)
8062  *varname = record->name;
8063 
8064  return _ShowOption(record, true);
8065 }
static char * _ShowOption(struct config_generic *record, bool use_units)
Definition: guc.c:8633
Oid GetUserId(void)
Definition: miscinit.c:284
const char * name
Definition: guc_tables.h:146
int errcode(int sqlerrcode)
Definition: elog.c:575
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
#define GUC_SUPERUSER_ONLY
Definition: guc.h:212
bool is_member_of_role(Oid member, Oid role)
Definition: acl.c:4837
#define DEFAULT_ROLE_READ_ALL_SETTINGS
Definition: pg_authid.h:106
static struct config_generic * find_option(const char *name, bool create_placeholders, int elevel)
Definition: guc.c:4372
#define NULL
Definition: c.h:229
const char * name
Definition: encode.c:521
int errmsg(const char *fmt,...)
Definition: elog.c:797
void GetConfigOptionByNum ( int  varnum,
const char **  values,
bool noshow 
)

Definition at line 8072 of file guc.c.

References _ShowOption(), Assert, config_bool::boot_val, config_int::boot_val, config_real::boot_val, config_string::boot_val, config_enum::boot_val, buffer, config_enum_get_options(), config_enum_lookup_by_value(), config_generic::context, DEFAULT_ROLE_READ_ALL_SETTINGS, elog, ERROR, config_generic::flags, GetUserId(), config_generic::group, GUC_NO_SHOW_ALL, GUC_PENDING_RESTART, GUC_SUPERUSER_ONLY, GUC_UNIT_BLOCKS, GUC_UNIT_KB, GUC_UNIT_MB, GUC_UNIT_MEMORY, GUC_UNIT_MIN, GUC_UNIT_MS, GUC_UNIT_S, GUC_UNIT_TIME, GUC_UNIT_XBLOCKS, is_member_of_role(), config_generic::long_desc, config_int::max, config_real::max, config_int::min, config_real::min, config_generic::name, NULL, PGC_BOOL, PGC_ENUM, PGC_INT, PGC_REAL, PGC_S_FILE, PGC_STRING, pstrdup(), config_bool::reset_val, config_int::reset_val, config_real::reset_val, config_string::reset_val, config_enum::reset_val, config_generic::short_desc, snprintf(), config_generic::source, config_generic::sourcefile, config_generic::sourceline, config_generic::status, superuser(), and config_generic::vartype.

Referenced by show_all_settings().

8073 {
8074  char buffer[256];
8075  struct config_generic *conf;
8076 
8077  /* check requested variable number valid */
8078  Assert((varnum >= 0) && (varnum < num_guc_variables));
8079 
8080  conf = guc_variables[varnum];
8081 
8082  if (noshow)
8083  {
8084  if ((conf->flags & GUC_NO_SHOW_ALL) ||
8085  ((conf->flags & GUC_SUPERUSER_ONLY) &&
8087  *noshow = true;
8088  else
8089  *noshow = false;
8090  }
8091 
8092  /* first get the generic attributes */
8093 
8094  /* name */
8095  values[0] = conf->name;
8096 
8097  /* setting : use _ShowOption in order to avoid duplicating the logic */
8098  values[1] = _ShowOption(conf, false);
8099 
8100  /* unit */
8101  if (conf->vartype == PGC_INT)
8102  {
8103  switch (conf->flags & (GUC_UNIT_MEMORY | GUC_UNIT_TIME))
8104  {
8105  case GUC_UNIT_KB:
8106  values[2] = "kB";
8107  break;
8108  case GUC_UNIT_MB:
8109  values[2] = "MB";
8110  break;
8111  case GUC_UNIT_BLOCKS:
8112  snprintf(buffer, sizeof(buffer), "%dkB", BLCKSZ / 1024);
8113  values[2] = pstrdup(buffer);
8114  break;
8115  case GUC_UNIT_XBLOCKS:
8116  snprintf(buffer, sizeof(buffer), "%dkB", XLOG_BLCKSZ / 1024);
8117  values[2] = pstrdup(buffer);
8118  break;
8119  case GUC_UNIT_MS:
8120  values[2] = "ms";
8121  break;
8122  case GUC_UNIT_S:
8123  values[2] = "s";
8124  break;
8125  case GUC_UNIT_MIN:
8126  values[2] = "min";
8127  break;
8128  case 0:
8129  values[2] = NULL;
8130  break;
8131  default:
8132  elog(ERROR, "unrecognized GUC units value: %d",
8133  conf->flags & (GUC_UNIT_MEMORY | GUC_UNIT_TIME));
8134  values[2] = NULL;
8135  break;
8136  }
8137  }
8138  else
8139  values[2] = NULL;
8140 
8141  /* group */
8142  values[3] = config_group_names[conf->group];
8143 
8144  /* short_desc */
8145  values[4] = conf->short_desc;
8146 
8147  /* extra_desc */
8148  values[5] = conf->long_desc;
8149 
8150  /* context */
8151  values[6] = GucContext_Names[conf->context];
8152 
8153  /* vartype */
8154  values[7] = config_type_names[conf->vartype];
8155 
8156  /* source */
8157  values[8] = GucSource_Names[conf->source];
8158 
8159  /* now get the type specific attributes */
8160  switch (conf->vartype)
8161  {
8162  case PGC_BOOL:
8163  {
8164  struct config_bool *lconf = (struct config_bool *) conf;
8165 
8166  /* min_val */
8167  values[9] = NULL;
8168 
8169  /* max_val */
8170  values[10] = NULL;
8171 
8172  /* enumvals */
8173  values[11] = NULL;
8174 
8175  /* boot_val */
8176  values[12] = pstrdup(lconf->boot_val ? "on" : "off");
8177 
8178  /* reset_val */
8179  values[13] = pstrdup(lconf->reset_val ? "on" : "off");
8180  }
8181  break;
8182 
8183  case PGC_INT:
8184  {
8185  struct config_int *lconf = (struct config_int *) conf;
8186 
8187  /* min_val */
8188  snprintf(buffer, sizeof(buffer), "%d", lconf->min);
8189  values[9] = pstrdup(buffer);
8190 
8191  /* max_val */
8192  snprintf(buffer, sizeof(buffer), "%d", lconf->max);
8193  values[10] = pstrdup(buffer);
8194 
8195  /* enumvals */
8196  values[11] = NULL;
8197 
8198  /* boot_val */
8199  snprintf(buffer, sizeof(buffer), "%d", lconf->boot_val);
8200  values[12] = pstrdup(buffer);
8201 
8202  /* reset_val */
8203  snprintf(buffer, sizeof(buffer), "%d", lconf->reset_val);
8204  values[13] = pstrdup(buffer);
8205  }
8206  break;
8207 
8208  case PGC_REAL:
8209  {
8210  struct config_real *lconf = (struct config_real *) conf;
8211 
8212  /* min_val */
8213  snprintf(buffer, sizeof(buffer), "%g", lconf->min);
8214  values[9] = pstrdup(buffer);
8215 
8216  /* max_val */
8217  snprintf(buffer, sizeof(buffer), "%g", lconf->max);
8218  values[10] = pstrdup(buffer);
8219 
8220  /* enumvals */
8221  values[11] = NULL;
8222 
8223  /* boot_val */
8224  snprintf(buffer, sizeof(buffer), "%g", lconf->boot_val);
8225  values[12] = pstrdup(buffer);
8226 
8227  /* reset_val */
8228  snprintf(buffer, sizeof(buffer), "%g", lconf->reset_val);
8229  values[13] = pstrdup(buffer);
8230  }
8231  break;
8232 
8233  case PGC_STRING:
8234  {
8235  struct config_string *lconf = (struct config_string *) conf;
8236 
8237  /* min_val */
8238  values[9] = NULL;
8239 
8240  /* max_val */
8241  values[10] = NULL;
8242 
8243  /* enumvals */
8244  values[11] = NULL;
8245 
8246  /* boot_val */
8247  if (lconf->boot_val == NULL)
8248  values[12] = NULL;
8249  else
8250  values[12] = pstrdup(lconf->boot_val);
8251 
8252  /* reset_val */
8253  if (lconf->reset_val == NULL)
8254  values[13] = NULL;
8255  else
8256  values[13] = pstrdup(lconf->reset_val);
8257  }
8258  break;
8259 
8260  case PGC_ENUM:
8261  {
8262  struct config_enum *lconf = (struct config_enum *) conf;
8263 
8264  /* min_val */
8265  values[9] = NULL;
8266 
8267  /* max_val */
8268  values[10] = NULL;
8269 
8270  /* enumvals */
8271 
8272  /*
8273  * NOTE! enumvals with double quotes in them are not
8274  * supported!
8275  */
8276  values[11] = config_enum_get_options((struct config_enum *) conf,
8277  "{\"", "\"}", "\",\"");
8278 
8279  /* boot_val */
8280