PostgreSQL Source Code  git master
miscadmin.h File Reference
#include <signal.h>
#include "datatype/timestamp.h"
#include "pgtime.h"
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Macros

#define InvalidPid   (-1)
 
#define CHECK_FOR_INTERRUPTS()
 
#define HOLD_INTERRUPTS()   (InterruptHoldoffCount++)
 
#define RESUME_INTERRUPTS()
 
#define HOLD_CANCEL_INTERRUPTS()   (QueryCancelHoldoffCount++)
 
#define RESUME_CANCEL_INTERRUPTS()
 
#define START_CRIT_SECTION()   (CritSectionCount++)
 
#define END_CRIT_SECTION()
 
#define USE_POSTGRES_DATES   0
 
#define USE_ISO_DATES   1
 
#define USE_SQL_DATES   2
 
#define USE_GERMAN_DATES   3
 
#define USE_XSD_DATES   4
 
#define DATEORDER_YMD   0
 
#define DATEORDER_DMY   1
 
#define DATEORDER_MDY   2
 
#define INTSTYLE_POSTGRES   0
 
#define INTSTYLE_POSTGRES_VERBOSE   1
 
#define INTSTYLE_SQL_STANDARD   2
 
#define INTSTYLE_ISO_8601   3
 
#define MAXTZLEN   10 /* max TZ name len, not counting tr. null */
 
#define SECURITY_LOCAL_USERID_CHANGE   0x0001
 
#define SECURITY_RESTRICTED_OPERATION   0x0002
 
#define SECURITY_NOFORCE_RLS   0x0004
 
#define IsBootstrapProcessingMode()   (Mode == BootstrapProcessing)
 
#define IsInitProcessingMode()   (Mode == InitProcessing)
 
#define IsNormalProcessingMode()   (Mode == NormalProcessing)
 
#define GetProcessingMode()   Mode
 
#define SetProcessingMode(mode)
 
#define AmBootstrapProcess()   (MyAuxProcType == BootstrapProcess)
 
#define AmStartupProcess()   (MyAuxProcType == StartupProcess)
 
#define AmBackgroundWriterProcess()   (MyAuxProcType == BgWriterProcess)
 
#define AmCheckpointerProcess()   (MyAuxProcType == CheckpointerProcess)
 
#define AmWalWriterProcess()   (MyAuxProcType == WalWriterProcess)
 
#define AmWalReceiverProcess()   (MyAuxProcType == WalReceiverProcess)
 

Typedefs

typedef char * pg_stack_base_t
 
typedef enum ProcessingMode ProcessingMode
 

Enumerations

enum  ProcessingMode { BootstrapProcessing, InitProcessing, NormalProcessing }
 
enum  AuxProcType {
  NotAnAuxProcess = -1, CheckerProcess = 0, BootstrapProcess, StartupProcess,
  BgWriterProcess, CheckpointerProcess, WalWriterProcess, WalReceiverProcess,
  NUM_AUXPROCTYPES
}
 

Functions

void ProcessInterrupts (void)
 
pg_stack_base_t set_stack_base (void)
 
void restore_stack_base (pg_stack_base_t base)
 
void check_stack_depth (void)
 
bool stack_is_too_deep (void)
 
void PostgresSigHupHandler (SIGNAL_ARGS)
 
void PreventCommandIfReadOnly (const char *cmdname)
 
void PreventCommandIfParallelMode (const char *cmdname)
 
void PreventCommandDuringRecovery (const char *cmdname)
 
int trace_recovery (int trace_level)
 
void InitPostmasterChild (void)
 
void InitStandaloneProcess (const char *argv0)
 
void SetDatabasePath (const char *path)
 
char * GetUserNameFromId (Oid roleid, bool noerr)
 
Oid GetUserId (void)
 
Oid GetOuterUserId (void)
 
Oid GetSessionUserId (void)
 
Oid GetAuthenticatedUserId (void)
 
void GetUserIdAndSecContext (Oid *userid, int *sec_context)
 
void SetUserIdAndSecContext (Oid userid, int sec_context)
 
bool InLocalUserIdChange (void)
 
bool InSecurityRestrictedOperation (void)
 
bool InNoForceRLSOperation (void)
 
void GetUserIdAndContext (Oid *userid, bool *sec_def_context)
 
void SetUserIdAndContext (Oid userid, bool sec_def_context)
 
void InitializeSessionUserId (const char *rolename, Oid useroid)
 
void InitializeSessionUserIdStandalone (void)
 
void SetSessionAuthorization (Oid userid, bool is_superuser)
 
Oid GetCurrentRoleId (void)
 
void SetCurrentRoleId (Oid roleid, bool is_superuser)
 
void checkDataDir (void)
 
void SetDataDir (const char *dir)
 
void ChangeToDataDir (void)
 
void SwitchToSharedLatch (void)
 
void SwitchBackToLocalLatch (void)
 
bool superuser (void)
 
bool superuser_arg (Oid roleid)
 
void pg_split_opts (char **argv, int *argcp, const char *optstr)
 
void InitializeMaxBackends (void)
 
void InitPostgres (const char *in_dbname, Oid dboid, const char *username, Oid useroid, char *out_dbname, bool override_allow_connections)
 
void BaseInit (void)
 
void CreateDataDirLockFile (bool amPostmaster)
 
void CreateSocketLockFile (const char *socketfile, bool amPostmaster, const char *socketDir)
 
void TouchSocketLockFiles (void)
 
void AddToDataDirLockFile (int target_line, const char *str)
 
bool RecheckDataDirLockFile (void)
 
void ValidatePgVersion (const char *path)
 
void process_shared_preload_libraries (void)
 
void process_session_preload_libraries (void)
 
void pg_bindtextdomain (const char *domain)
 
bool has_rolreplication (Oid roleid)
 
bool BackupInProgress (void)
 
void CancelBackup (void)
 

Variables

PGDLLIMPORT volatile sig_atomic_t InterruptPending
 
PGDLLIMPORT volatile sig_atomic_t QueryCancelPending
 
PGDLLIMPORT volatile sig_atomic_t ProcDiePending
 
PGDLLIMPORT volatile sig_atomic_t IdleInTransactionSessionTimeoutPending
 
PGDLLIMPORT volatile sig_atomic_t ConfigReloadPending
 
PGDLLIMPORT volatile sig_atomic_t ClientConnectionLost
 
PGDLLIMPORT volatile uint32 InterruptHoldoffCount
 
PGDLLIMPORT volatile uint32 QueryCancelHoldoffCount
 
PGDLLIMPORT volatile uint32 CritSectionCount
 
PGDLLIMPORT pid_t PostmasterPid
 
PGDLLIMPORT bool IsPostmasterEnvironment
 
PGDLLIMPORT bool IsUnderPostmaster
 
PGDLLIMPORT bool IsBackgroundWorker
 
PGDLLIMPORT bool IsBinaryUpgrade
 
PGDLLIMPORT bool ExitOnAnyError
 
PGDLLIMPORT char * DataDir
 
PGDLLIMPORT int data_directory_mode
 
PGDLLIMPORT int NBuffers
 
PGDLLIMPORT int MaxBackends
 
PGDLLIMPORT int MaxConnections
 
PGDLLIMPORT int max_worker_processes
 
PGDLLIMPORT int max_parallel_workers
 
PGDLLIMPORT int MyProcPid
 
PGDLLIMPORT pg_time_t MyStartTime
 
PGDLLIMPORT TimestampTz MyStartTimestamp
 
PGDLLIMPORT struct PortMyProcPort
 
PGDLLIMPORT struct LatchMyLatch
 
int32 MyCancelKey
 
int MyPMChildSlot
 
char OutputFileName []
 
PGDLLIMPORT char my_exec_path []
 
char pkglib_path []
 
PGDLLIMPORT Oid MyDatabaseId
 
PGDLLIMPORT Oid MyDatabaseTableSpace
 
PGDLLIMPORT int DateStyle
 
PGDLLIMPORT int DateOrder
 
PGDLLIMPORT int IntervalStyle
 
bool enableFsync
 
PGDLLIMPORT bool allowSystemTableMods
 
PGDLLIMPORT int work_mem
 
PGDLLIMPORT int maintenance_work_mem
 
PGDLLIMPORT int max_parallel_maintenance_workers
 
int VacuumCostPageHit
 
int VacuumCostPageMiss
 
int VacuumCostPageDirty
 
int VacuumCostLimit
 
int VacuumCostDelay
 
int VacuumPageHit
 
int VacuumPageMiss
 
int VacuumPageDirty
 
int VacuumCostBalance
 
bool VacuumCostActive
 
double vacuum_cleanup_index_scale_factor
 
int trace_recovery_messages
 
char * DatabasePath
 
ProcessingMode Mode
 
AuxProcType MyAuxProcType
 
bool IgnoreSystemIndexes
 
PGDLLIMPORT bool process_shared_preload_libraries_in_progress
 
char * session_preload_libraries_string
 
char * shared_preload_libraries_string
 
char * local_preload_libraries_string
 

Macro Definition Documentation

◆ AmBackgroundWriterProcess

#define AmBackgroundWriterProcess ( )    (MyAuxProcType == BgWriterProcess)

Definition at line 413 of file miscadmin.h.

Referenced by ForwardFsyncRequest().

◆ AmBootstrapProcess

#define AmBootstrapProcess ( )    (MyAuxProcType == BootstrapProcess)

Definition at line 411 of file miscadmin.h.

◆ AmCheckpointerProcess

#define AmCheckpointerProcess ( )    (MyAuxProcType == CheckpointerProcess)

◆ AmStartupProcess

#define AmStartupProcess ( )    (MyAuxProcType == StartupProcess)

Definition at line 412 of file miscadmin.h.

Referenced by HotStandbyActiveInReplay(), and mdinit().

◆ AmWalReceiverProcess

#define AmWalReceiverProcess ( )    (MyAuxProcType == WalReceiverProcess)

Definition at line 416 of file miscadmin.h.

Referenced by get_sync_bit().

◆ AmWalWriterProcess

#define AmWalWriterProcess ( )    (MyAuxProcType == WalWriterProcess)

Definition at line 415 of file miscadmin.h.

◆ CHECK_FOR_INTERRUPTS

#define CHECK_FOR_INTERRUPTS ( )
Value:
do { \
ProcessInterrupts(); \
} while(0)
PGDLLIMPORT volatile sig_atomic_t InterruptPending
Definition: globals.c:30

Definition at line 99 of file miscadmin.h.

Referenced by _bt_buildadd(), _bt_pagedel(), _bt_readnextpage(), _bt_unlink_halfdead_page(), _bt_walk_left(), _crypt_blowfish_rn(), _hash_init(), _hash_readnext(), _hash_readprev(), add_partial_path(), add_path(), agg_retrieve_hash_table(), analyze_rel(), ApplyLauncherMain(), apw_dump_now(), ATRewriteTable(), autoprewarm_database_main(), backend_read_statsfile(), BipartiteMatch(), BitmapHeapNext(), blgetbitmap(), bloomBuildCallback(), brin_evacuate_page(), brin_getinsertbuffer(), brin_vacuum_scan(), bringetbitmap(), brinGetTupleForHeapBlock(), brininsert(), brinsummarize(), bt_check_level_from_leftmost(), bt_downlink_missing_check(), bt_right_page_check_scankey(), bt_target_page_check(), btree_xlog_delete_get_latestRemovedXid(), BufFileDeleteShared(), BufFileOpenShared(), calculate_database_size(), calculate_relation_size(), calculate_tablespace_size(), check_default_partition_contents(), CheckSCRAMAuth(), ClientAuthentication(), cluster_rel(), collect_corrupt_items(), collect_visibility_data(), ConditionVariableSleep(), copy_file(), copy_heap_data(), copy_messages(), copy_read_data(), copy_relation_data(), copydir(), CopyFrom(), CopyTo(), count_nondeletable_pages(), CountOtherDBBackends(), db_dir_size(), DecodingContextFindStartpoint(), do_autovacuum(), do_des(), do_pg_stop_backup(), dofindsubquery(), dsm_impl_op(), errfinish(), exec_execute_message(), exec_parse_message(), exec_replication_command(), exec_simple_query(), exec_stmt(), exec_stmts(), ExecAgg(), ExecAppend(), ExecCustomScan(), ExecGather(), ExecGatherMerge(), ExecGroup(), ExecHashIncreaseNumBatches(), ExecHashIncreaseNumBuckets(), ExecHashJoinGetSavedTuple(), ExecHashJoinImpl(), ExecHashRemoveNextSkewBucket(), ExecLimit(), ExecLockRows(), ExecMakeTableFunctionResult(), ExecMaterial(), ExecMergeAppend(), ExecMergeJoin(), ExecModifyTable(), ExecNestLoop(), ExecParallelHashIncreaseNumBuckets(), ExecParallelHashJoinPartitionOuter(), ExecParallelHashRepartitionFirst(), ExecParallelHashRepartitionRest(), ExecProjectSet(), ExecRecursiveUnion(), ExecResult(), ExecScanFetch(), ExecScanHashTableForUnmatched(), ExecSetOp(), ExecSort(), ExecSubPlan(), ExecUnique(), ExecWindowAgg(), fetch_input_tuple(), findPartialMatch(), fsm_vacuum_page(), gather_getnext(), gather_merge_init(), gather_readnext(), get_query_def(), get_rule_expr(), get_setop_query(), GetMultiXactIdMembers(), GetNewOidWithIndex(), GetNewRelFileNode(), getNextNearest(), ginbuild(), ginBuildCallback(), gingetbitmap(), gistgetbitmap(), gistgettuple(), gistProcessItup(), gm_readnext_tuple(), HandleFunctionRequest(), hash_xlog_vacuum_get_latestRemovedXid(), heap_lock_updated_tuple_rec(), heap_multi_insert(), heapgetpage(), hypothetical_dense_rank_final(), hypothetical_rank_common(), ident_inet(), IndexBuildHeapRangeScan(), IndexCheckExclusion(), IndexNext(), IndexNextWithReorder(), IndexOnlyNext(), initialize_worker_spi(), interactive_getc(), lazy_truncate_heap(), libpqrcv_connect(), libpqrcv_PQexec(), libpqrcv_processTuples(), logicalrep_worker_stop(), LogicalRepApplyLoop(), lseg_inside_poly(), make_bounded_heap(), mode_final(), mq_putmessage(), MultiExecBitmapIndexScan(), MultiExecProcNode(), nfalsepos_for_missing_strings(), numeric_fac(), OpenTableList(), pg_logical_replication_slot_advance(), pg_logical_slot_get_changes_guts(), pg_prewarm(), pg_promote(), pg_sleep(), pg_visibility_map_summary(), pgfdw_get_cleanup_result(), pgfdw_get_result(), PGSemaphoreLock(), pgstat_collect_oids(), pgstat_get_backend_current_activity(), pgstat_heap(), pgstat_index(), pgstat_read_current_status(), pgstat_vacuum_stat(), pgstathashindex(), pgstatindex_impl(), plperl_spi_prepare(), populate_with_dummy_strings(), PortalRunMulti(), postgresAcquireSampleRowsFunc(), PostgresMain(), predicate_implied_by_simple_clause(), predicate_refuted_by_simple_clause(), process_ordered_aggregate_multi(), ProcessClientReadInterrupt(), ProcessClientWriteInterrupt(), ProcessWalRcvInterrupts(), ProcSleep(), ProcWaitForSignal(), puttuple_common(), random_relative_prime(), RE_compile_and_cache(), RE_wchar_execute(), read_local_xlog_page(), refresh_matview_datafill(), regexp_fixed_prefix(), replace_text(), replace_text_regexp(), replorigin_create(), RequestCheckpoint(), revmap_extend_and_get_blkno(), sendAuthRequest(), sendDir(), set_rtable_names(), setop_retrieve_hash_table(), shm_mq_receive_bytes(), shm_mq_send_bytes(), shm_mq_wait_internal(), spgdoinsert(), spgWalk(), statapprox_heap(), storeQueryResult(), summarize_range(), tablesample_getnext(), test_shm_mq_pipelined(), text_to_array_internal(), tfuncLoadRows(), throttle(), TidNext(), toast_save_datum(), tuplesort_heap_insert(), tuplesort_heap_replace_top(), tuplesort_skiptuples(), tuplestore_skiptuples(), vacuum_delay_point(), vacuum_rel(), validate_index_heapscan(), wait_for_relation_state_change(), wait_for_worker_state_change(), wait_for_workers_to_become_ready(), wait_pid(), WaitExceedsMaxStandbyDelay(), WaitForBackgroundWorkerShutdown(), WaitForBackgroundWorkerStartup(), WaitForParallelWorkersToAttach(), WaitForParallelWorkersToFinish(), WaitForReplicationWorkerAttach(), walkdir(), WalSndLoop(), WalSndWaitForWal(), WalSndWriteData(), and window_gettupleslot().

◆ DATEORDER_DMY

#define DATEORDER_DMY   1

◆ DATEORDER_MDY

#define DATEORDER_MDY   2

Definition at line 222 of file miscadmin.h.

Referenced by check_datestyle(), locale_date_order(), and setup_config().

◆ DATEORDER_YMD

#define DATEORDER_YMD   0

Definition at line 220 of file miscadmin.h.

Referenced by check_datestyle(), DecodeNumber(), locale_date_order(), and setup_config().

◆ END_CRIT_SECTION

#define END_CRIT_SECTION ( )
Value:
do { \
Assert(CritSectionCount > 0); \
CritSectionCount--; \
} while(0)
PGDLLIMPORT volatile uint32 CritSectionCount
Definition: globals.c:38

Definition at line 134 of file miscadmin.h.

Referenced by _bt_delitems_delete(), _bt_delitems_vacuum(), _bt_getroot(), _bt_insertonpg(), _bt_mark_page_halfdead(), _bt_newroot(), _bt_split(), _bt_unlink_halfdead_page(), _bt_update_meta_cleanup_info(), _hash_addovflpage(), _hash_doinsert(), _hash_expandtable(), _hash_freeovflpage(), _hash_splitbucket(), _hash_squeezebucket(), _hash_vacuum_one_page(), AbsorbFsyncRequests(), addLeafTuple(), brin_doinsert(), brin_doupdate(), brin_initialize_empty_new_buffer(), brinbuildempty(), brinRevmapDesummarizeRange(), CreateCheckPoint(), CreateEndOfRecoveryRecord(), createPostingTree(), CreateSlotOnDisk(), do_setval(), doPickSplit(), EndPrepare(), fill_seq_with_data(), FreeSpaceMapTruncateRel(), GenericXLogFinish(), ginbuild(), ginbuildempty(), ginbulkdelete(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), ginVacuumPostingTreeLeaf(), gistbuild(), gistbuildempty(), gistbulkdelete(), gistplacetopage(), gistvacuumpage(), hashbucketcleanup(), hashbulkdelete(), heap_abort_speculative(), heap_delete(), heap_finish_speculative(), heap_inplace_update(), heap_insert(), heap_lock_tuple(), heap_lock_updated_tuple_rec(), heap_multi_insert(), heap_page_prune(), heap_update(), lazy_scan_heap(), lazy_vacuum_page(), moveLeafs(), MultiXactIdCreateFromMembers(), nextval_internal(), PostPrepare_Locks(), RecordTransactionAbort(), RecordTransactionAbortPrepared(), RecordTransactionCommit(), RecordTransactionCommitPrepared(), ReplicationSlotDropPtr(), RestoreSlotFromDisk(), revmap_physical_extend(), SaveSlotToPath(), shiftList(), SlruPhysicalWritePage(), spgAddNodeAction(), spgbuild(), spgSplitNodeAction(), TruncateMultiXact(), UpdateFullPageWrites(), vacuumLeafPage(), vacuumLeafRoot(), vacuumRedirectAndPlaceholder(), visibilitymap_set(), visibilitymap_truncate(), write_relmap_file(), writeListPage(), XLogBackgroundFlush(), XLogFlush(), and XLogInsertRecord().

◆ GetProcessingMode

#define GetProcessingMode ( )    Mode

Definition at line 378 of file miscadmin.h.

◆ HOLD_CANCEL_INTERRUPTS

#define HOLD_CANCEL_INTERRUPTS ( )    (QueryCancelHoldoffCount++)

Definition at line 124 of file miscadmin.h.

Referenced by CopyGetData(), and SocketBackend().

◆ HOLD_INTERRUPTS

◆ INTSTYLE_ISO_8601

#define INTSTYLE_ISO_8601   3

Definition at line 237 of file miscadmin.h.

Referenced by EncodeInterval().

◆ INTSTYLE_POSTGRES

#define INTSTYLE_POSTGRES   0

Definition at line 234 of file miscadmin.h.

Referenced by EncodeInterval(), and set_transmission_modes().

◆ INTSTYLE_POSTGRES_VERBOSE

#define INTSTYLE_POSTGRES_VERBOSE   1

Definition at line 235 of file miscadmin.h.

Referenced by DecodeInterval(), EncodeInterval(), and PGTYPESinterval_to_asc().

◆ INTSTYLE_SQL_STANDARD

#define INTSTYLE_SQL_STANDARD   2

Definition at line 236 of file miscadmin.h.

Referenced by DecodeInterval(), and EncodeInterval().

◆ InvalidPid

◆ IsBootstrapProcessingMode

◆ IsInitProcessingMode

#define IsInitProcessingMode ( )    (Mode == InitProcessing)

◆ IsNormalProcessingMode

#define IsNormalProcessingMode ( )    (Mode == NormalProcessing)

◆ MAXTZLEN

#define MAXTZLEN   10 /* max TZ name len, not counting tr. null */

Definition at line 241 of file miscadmin.h.

Referenced by abstime2tm(), and EncodeDateTime().

◆ RESUME_CANCEL_INTERRUPTS

#define RESUME_CANCEL_INTERRUPTS ( )
Value:
do { \
Assert(QueryCancelHoldoffCount > 0); \
QueryCancelHoldoffCount--; \
} while(0)
PGDLLIMPORT volatile uint32 QueryCancelHoldoffCount
Definition: globals.c:37

Definition at line 126 of file miscadmin.h.

Referenced by CopyGetData(), and SocketBackend().

◆ RESUME_INTERRUPTS

◆ SECURITY_LOCAL_USERID_CHANGE

◆ SECURITY_NOFORCE_RLS

#define SECURITY_NOFORCE_RLS   0x0004

Definition at line 301 of file miscadmin.h.

Referenced by InNoForceRLSOperation(), ri_PerformCheck(), and ri_PlanCheck().

◆ SECURITY_RESTRICTED_OPERATION

#define SECURITY_RESTRICTED_OPERATION   0x0002

◆ SetProcessingMode

#define SetProcessingMode (   mode)

◆ START_CRIT_SECTION

#define START_CRIT_SECTION ( )    (CritSectionCount++)

Definition at line 132 of file miscadmin.h.

Referenced by _bt_delitems_delete(), _bt_delitems_vacuum(), _bt_getroot(), _bt_insertonpg(), _bt_mark_page_halfdead(), _bt_newroot(), _bt_split(), _bt_unlink_halfdead_page(), _bt_update_meta_cleanup_info(), _hash_addovflpage(), _hash_doinsert(), _hash_expandtable(), _hash_freeovflpage(), _hash_splitbucket(), _hash_squeezebucket(), _hash_vacuum_one_page(), AbsorbFsyncRequests(), addLeafTuple(), brin_doinsert(), brin_doupdate(), brin_initialize_empty_new_buffer(), brinbuildempty(), brinRevmapDesummarizeRange(), CreateCheckPoint(), CreateEndOfRecoveryRecord(), createPostingTree(), CreateSlotOnDisk(), do_setval(), doPickSplit(), EndPrepare(), fill_seq_with_data(), FreeSpaceMapTruncateRel(), GenericXLogFinish(), GetNewMultiXactId(), ginbuild(), ginbuildempty(), ginbulkdelete(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), ginVacuumPostingTreeLeaf(), gistbuild(), gistbuildempty(), gistbulkdelete(), gistplacetopage(), gistvacuumpage(), hashbucketcleanup(), hashbulkdelete(), heap_abort_speculative(), heap_delete(), heap_finish_speculative(), heap_inplace_update(), heap_insert(), heap_lock_tuple(), heap_lock_updated_tuple_rec(), heap_multi_insert(), heap_page_prune(), heap_update(), lazy_scan_heap(), lazy_vacuum_page(), moveLeafs(), nextval_internal(), PostPrepare_Locks(), RecordTransactionAbort(), RecordTransactionAbortPrepared(), RecordTransactionCommit(), RecordTransactionCommitPrepared(), ReplicationSlotDropPtr(), RestoreSlotFromDisk(), revmap_physical_extend(), SaveSlotToPath(), shiftList(), SlruPhysicalWritePage(), spgAddNodeAction(), spgbuild(), spgSplitNodeAction(), TruncateMultiXact(), UpdateFullPageWrites(), vacuumLeafPage(), vacuumLeafRoot(), vacuumRedirectAndPlaceholder(), visibilitymap_set(), visibilitymap_truncate(), write_relmap_file(), writeListPage(), XLogBackgroundFlush(), XLogFlush(), and XLogInsertRecord().

◆ USE_GERMAN_DATES

#define USE_GERMAN_DATES   3

Definition at line 216 of file miscadmin.h.

Referenced by check_datestyle(), EncodeDateOnly(), and EncodeDateTime().

◆ USE_ISO_DATES

#define USE_ISO_DATES   1

◆ USE_POSTGRES_DATES

#define USE_POSTGRES_DATES   0

Definition at line 213 of file miscadmin.h.

Referenced by check_datestyle(), EncodeDateOnly(), and EncodeDateTime().

◆ USE_SQL_DATES

#define USE_SQL_DATES   2

Definition at line 215 of file miscadmin.h.

Referenced by check_datestyle(), EncodeDateOnly(), and EncodeDateTime().

◆ USE_XSD_DATES

#define USE_XSD_DATES   4

Typedef Documentation

◆ pg_stack_base_t

Definition at line 274 of file miscadmin.h.

◆ ProcessingMode

Enumeration Type Documentation

◆ AuxProcType

Enumerator
NotAnAuxProcess 
CheckerProcess 
BootstrapProcess 
StartupProcess 
BgWriterProcess 
CheckpointerProcess 
WalWriterProcess 
WalReceiverProcess 
NUM_AUXPROCTYPES 

Definition at line 395 of file miscadmin.h.

◆ ProcessingMode

Enumerator
BootstrapProcessing 
InitProcessing 
NormalProcessing 

Definition at line 365 of file miscadmin.h.

366 {
367  BootstrapProcessing, /* bootstrap creation of template database */
368  InitProcessing, /* initializing system */
369  NormalProcessing /* normal processing */
ProcessingMode
Definition: miscadmin.h:365

Function Documentation

◆ AddToDataDirLockFile()

void AddToDataDirLockFile ( int  target_line,
const char *  str 
)

Definition at line 1258 of file miscinit.c.

References close, DIRECTORY_LOCK_FILE, ereport, errcode_for_file_access(), errmsg(), fd(), LOG, PG_BINARY, pg_fsync(), pgstat_report_wait_end(), pgstat_report_wait_start(), read, snprintf, WAIT_EVENT_LOCK_FILE_ADDTODATADIR_READ, WAIT_EVENT_LOCK_FILE_ADDTODATADIR_SYNC, WAIT_EVENT_LOCK_FILE_ADDTODATADIR_WRITE, and write.

Referenced by InternalIpcMemoryCreate(), pmdie(), PostmasterMain(), reaper(), and sigusr1_handler().

1259 {
1260  int fd;
1261  int len;
1262  int lineno;
1263  char *srcptr;
1264  char *destptr;
1265  char srcbuffer[BLCKSZ];
1266  char destbuffer[BLCKSZ];
1267 
1268  fd = open(DIRECTORY_LOCK_FILE, O_RDWR | PG_BINARY, 0);
1269  if (fd < 0)
1270  {
1271  ereport(LOG,
1273  errmsg("could not open file \"%s\": %m",
1275  return;
1276  }
1278  len = read(fd, srcbuffer, sizeof(srcbuffer) - 1);
1280  if (len < 0)
1281  {
1282  ereport(LOG,
1284  errmsg("could not read from file \"%s\": %m",
1286  close(fd);
1287  return;
1288  }
1289  srcbuffer[len] = '\0';
1290 
1291  /*
1292  * Advance over lines we are not supposed to rewrite, then copy them to
1293  * destbuffer.
1294  */
1295  srcptr = srcbuffer;
1296  for (lineno = 1; lineno < target_line; lineno++)
1297  {
1298  char *eol = strchr(srcptr, '\n');
1299 
1300  if (eol == NULL)
1301  break; /* not enough lines in file yet */
1302  srcptr = eol + 1;
1303  }
1304  memcpy(destbuffer, srcbuffer, srcptr - srcbuffer);
1305  destptr = destbuffer + (srcptr - srcbuffer);
1306 
1307  /*
1308  * Fill in any missing lines before the target line, in case lines are
1309  * added to the file out of order.
1310  */
1311  for (; lineno < target_line; lineno++)
1312  {
1313  if (destptr < destbuffer + sizeof(destbuffer))
1314  *destptr++ = '\n';
1315  }
1316 
1317  /*
1318  * Write or rewrite the target line.
1319  */
1320  snprintf(destptr, destbuffer + sizeof(destbuffer) - destptr, "%s\n", str);
1321  destptr += strlen(destptr);
1322 
1323  /*
1324  * If there are more lines in the old file, append them to destbuffer.
1325  */
1326  if ((srcptr = strchr(srcptr, '\n')) != NULL)
1327  {
1328  srcptr++;
1329  snprintf(destptr, destbuffer + sizeof(destbuffer) - destptr, "%s",
1330  srcptr);
1331  }
1332 
1333  /*
1334  * And rewrite the data. Since we write in a single kernel call, this
1335  * update should appear atomic to onlookers.
1336  */
1337  len = strlen(destbuffer);
1338  errno = 0;
1340  if (lseek(fd, (off_t) 0, SEEK_SET) != 0 ||
1341  (int) write(fd, destbuffer, len) != len)
1342  {
1344  /* if write didn't set errno, assume problem is no disk space */
1345  if (errno == 0)
1346  errno = ENOSPC;
1347  ereport(LOG,
1349  errmsg("could not write to file \"%s\": %m",
1351  close(fd);
1352  return;
1353  }
1356  if (pg_fsync(fd) != 0)
1357  {
1358  ereport(LOG,
1360  errmsg("could not write to file \"%s\": %m",
1362  }
1364  if (close(fd) != 0)
1365  {
1366  ereport(LOG,
1368  errmsg("could not write to file \"%s\": %m",
1370  }
1371 }
#define write(a, b, c)
Definition: win32.h:14
#define DIRECTORY_LOCK_FILE
Definition: miscinit.c:58
#define LOG
Definition: elog.h:26
static int fd(const char *x, int i)
Definition: preproc-init.c:105
#define PG_BINARY
Definition: c.h:1171
int errcode_for_file_access(void)
Definition: elog.c:593
static void pgstat_report_wait_end(void)
Definition: pgstat.h:1262
#define ereport(elevel, rest)
Definition: elog.h:141
static void pgstat_report_wait_start(uint32 wait_event_info)
Definition: pgstat.h:1238
int errmsg(const char *fmt,...)
Definition: elog.c:784
int pg_fsync(int fd)
Definition: fd.c:331
#define close(a)
Definition: win32.h:12
#define snprintf
Definition: port.h:192
#define read(a, b, c)
Definition: win32.h:13

◆ BackupInProgress()

bool BackupInProgress ( void  )

Definition at line 11627 of file xlog.c.

References BACKUP_LABEL_FILE, and stat.

Referenced by pg_is_in_backup(), and PostmasterStateMachine().

11628 {
11629  struct stat stat_buf;
11630 
11631  return (stat(BACKUP_LABEL_FILE, &stat_buf) == 0);
11632 }
struct stat stat_buf
Definition: pg_standby.c:102
#define stat(a, b)
Definition: win32_port.h:266
#define BACKUP_LABEL_FILE
Definition: xlog.h:324

◆ BaseInit()

void BaseInit ( void  )

Definition at line 546 of file postinit.c.

References DebugFileOpen(), InitBufferPoolAccess(), InitCommunication(), InitFileAccess(), and smgrinit().

Referenced by AutoVacLauncherMain(), AutoVacWorkerMain(), AuxiliaryProcessMain(), PostgresMain(), and StartBackgroundWorker().

547 {
548  /*
549  * Attach to shared memory and semaphores, and initialize our
550  * input/output/debugging file descriptors.
551  */
553  DebugFileOpen();
554 
555  /* Do local initialization of file, storage and buffer managers */
556  InitFileAccess();
557  smgrinit();
559 }
static void InitCommunication(void)
Definition: postinit.c:438
void InitBufferPoolAccess(void)
Definition: bufmgr.c:2437
void DebugFileOpen(void)
Definition: elog.c:1845
void smgrinit(void)
Definition: smgr.c:117
void InitFileAccess(void)
Definition: fd.c:760

◆ CancelBackup()

void CancelBackup ( void  )

Definition at line 11647 of file xlog.c.

References BACKUP_LABEL_FILE, BACKUP_LABEL_OLD, DEBUG1, durable_rename(), ereport, errcode_for_file_access(), errdetail(), errmsg(), LOG, stat, TABLESPACE_MAP, TABLESPACE_MAP_OLD, and WARNING.

Referenced by PostmasterStateMachine().

11648 {
11649  struct stat stat_buf;
11650 
11651  /* if the backup_label file is not there, return */
11652  if (stat(BACKUP_LABEL_FILE, &stat_buf) < 0)
11653  return;
11654 
11655  /* remove leftover file from previously canceled backup if it exists */
11656  unlink(BACKUP_LABEL_OLD);
11657 
11659  {
11660  ereport(WARNING,
11662  errmsg("online backup mode was not canceled"),
11663  errdetail("File \"%s\" could not be renamed to \"%s\": %m.",
11665  return;
11666  }
11667 
11668  /* if the tablespace_map file is not there, return */
11669  if (stat(TABLESPACE_MAP, &stat_buf) < 0)
11670  {
11671  ereport(LOG,
11672  (errmsg("online backup mode canceled"),
11673  errdetail("File \"%s\" was renamed to \"%s\".",
11675  return;
11676  }
11677 
11678  /* remove leftover file from previously canceled backup if it exists */
11679  unlink(TABLESPACE_MAP_OLD);
11680 
11682  {
11683  ereport(LOG,
11684  (errmsg("online backup mode canceled"),
11685  errdetail("Files \"%s\" and \"%s\" were renamed to "
11686  "\"%s\" and \"%s\", respectively.",
11689  }
11690  else
11691  {
11692  ereport(WARNING,
11694  errmsg("online backup mode canceled"),
11695  errdetail("File \"%s\" was renamed to \"%s\", but "
11696  "file \"%s\" could not be renamed to \"%s\": %m.",
11699  }
11700 }
#define DEBUG1
Definition: elog.h:25
#define LOG
Definition: elog.h:26
#define BACKUP_LABEL_OLD
Definition: xlog.h:325
#define TABLESPACE_MAP
Definition: xlog.h:327
struct stat stat_buf
Definition: pg_standby.c:102
int errdetail(const char *fmt,...)
Definition: elog.c:860
int errcode_for_file_access(void)
Definition: elog.c:593
#define ereport(elevel, rest)
Definition: elog.h:141
int durable_rename(const char *oldfile, const char *newfile, int elevel)
Definition: fd.c:589
#define WARNING
Definition: elog.h:40
#define stat(a, b)
Definition: win32_port.h:266
#define TABLESPACE_MAP_OLD
Definition: xlog.h:328
int errmsg(const char *fmt,...)
Definition: elog.c:784
#define BACKUP_LABEL_FILE
Definition: xlog.h:324

◆ ChangeToDataDir()

void ChangeToDataDir ( void  )

Definition at line 213 of file miscinit.c.

References AssertState, DataDir, ereport, errcode_for_file_access(), errmsg(), and FATAL.

Referenced by AuxiliaryProcessMain(), PostgresMain(), and PostmasterMain().

214 {
216 
217  if (chdir(DataDir) < 0)
218  ereport(FATAL,
220  errmsg("could not change directory to \"%s\": %m",
221  DataDir)));
222 }
#define AssertState(condition)
Definition: c.h:735
#define FATAL
Definition: elog.h:52
int errcode_for_file_access(void)
Definition: elog.c:593
#define ereport(elevel, rest)
Definition: elog.h:141
int errmsg(const char *fmt,...)
Definition: elog.c:784
char * DataDir
Definition: globals.c:62

◆ check_stack_depth()

void check_stack_depth ( void  )

Definition at line 3249 of file postgres.c.

References ereport, errcode(), errhint(), errmsg(), ERROR, max_stack_depth, and stack_is_too_deep().

Referenced by apply_scanjoin_target_to_paths(), clean_NOT_intree(), clean_stopword_intree(), cntsize(), contains_required_value(), convertJsonbValue(), copyObjectImpl(), Cover(), create_plan_recurse(), datum_to_json(), datum_to_jsonb(), dofindsubquery(), EventTriggerInvoke(), ExecEndNode(), ExecEvalAlternativeSubPlan(), ExecEvalSubPlan(), ExecInitExprRec(), ExecInitNode(), ExecMakeFunctionResultSet(), ExecProcNodeFirst(), ExecShutdownNode(), execute(), expand_partitioned_rtentry(), expression_tree_mutator(), expression_tree_walker(), fillQT(), find_composite_type_dependencies(), find_matching_subplans_recurse(), findoprnd(), findoprnd_recurse(), flatten_grouping_sets(), FreePageManagerDumpBtree(), freetree(), generate_partition_qual(), generate_partitionwise_join_paths(), get_partition_dispatch_recurse(), get_query_def(), get_rels_with_domain(), get_rule_expr(), get_setop_query(), get_steps_using_prefix_recurse(), gistSplit(), hash_range(), hash_range_extended(), hk_depth_search(), infix(), inline_set_returning_function(), int_query_opr_selec(), JsonbDeepContains(), JumbleExpr(), ltree_execute(), makepol(), maketree(), MatchText(), MultiExecProcNode(), parse_array(), parse_object(), plainnode(), plperl_hash_from_tuple(), plperl_sv_to_datum(), PLy_input_setup_func(), PLy_output_setup_func(), populate_array_dim_jsonb(), populate_record_field(), QT2QTN(), QTNBinary(), QTNClearFlags(), QTNCopy(), QTNFree(), QTNodeCompare(), QTNSort(), QTNTernary(), range_cmp(), range_in(), range_out(), range_recv(), range_send(), raw_expression_tree_walker(), record_cmp(), record_eq(), record_in(), record_out(), record_recv(), record_send(), recurse_set_operations(), set_append_rel_size(), setPath(), split_array(), standard_ProcessUtility(), transformExprRecurse(), transformSetOperationTree(), traverse_lacons(), try_partitionwise_join(), TS_execute(), TS_execute_ternary(), TS_phrase_execute(), tsquery_opr_selec(), and tsquery_requires_match().

3250 {
3251  if (stack_is_too_deep())
3252  {
3253  ereport(ERROR,
3254  (errcode(ERRCODE_STATEMENT_TOO_COMPLEX),
3255  errmsg("stack depth limit exceeded"),
3256  errhint("Increase the configuration parameter \"max_stack_depth\" (currently %dkB), "
3257  "after ensuring the platform's stack depth limit is adequate.",
3258  max_stack_depth)));
3259  }
3260 }
int errhint(const char *fmt,...)
Definition: elog.c:974
int errcode(int sqlerrcode)
Definition: elog.c:570
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:141
int max_stack_depth
Definition: postgres.c:98
int errmsg(const char *fmt,...)
Definition: elog.c:784
bool stack_is_too_deep(void)
Definition: postgres.c:3263

◆ checkDataDir()

void checkDataDir ( void  )

Definition at line 99 of file miscinit.c.

References Assert, data_directory_mode, DataDir, ereport, errcode(), errcode_for_file_access(), errdetail(), errhint(), errmsg(), FATAL, pg_dir_create_mode, pg_mode_mask, PG_MODE_MASK_GROUP, S_ISDIR, SetDataDirectoryCreatePerm(), stat, and ValidatePgVersion().

Referenced by AuxiliaryProcessMain(), BackendRun(), PostgresMain(), and PostmasterMain().

100 {
101  struct stat stat_buf;
102 
103  Assert(DataDir);
104 
105  if (stat(DataDir, &stat_buf) != 0)
106  {
107  if (errno == ENOENT)
108  ereport(FATAL,
110  errmsg("data directory \"%s\" does not exist",
111  DataDir)));
112  else
113  ereport(FATAL,
115  errmsg("could not read permissions of directory \"%s\": %m",
116  DataDir)));
117  }
118 
119  /* eventual chdir would fail anyway, but let's test ... */
120  if (!S_ISDIR(stat_buf.st_mode))
121  ereport(FATAL,
122  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
123  errmsg("specified data directory \"%s\" is not a directory",
124  DataDir)));
125 
126  /*
127  * Check that the directory belongs to my userid; if not, reject.
128  *
129  * This check is an essential part of the interlock that prevents two
130  * postmasters from starting in the same directory (see CreateLockFile()).
131  * Do not remove or weaken it.
132  *
133  * XXX can we safely enable this check on Windows?
134  */
135 #if !defined(WIN32) && !defined(__CYGWIN__)
136  if (stat_buf.st_uid != geteuid())
137  ereport(FATAL,
138  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
139  errmsg("data directory \"%s\" has wrong ownership",
140  DataDir),
141  errhint("The server must be started by the user that owns the data directory.")));
142 #endif
143 
144  /*
145  * Check if the directory has correct permissions. If not, reject.
146  *
147  * Only two possible modes are allowed, 0700 and 0750. The latter mode
148  * indicates that group read/execute should be allowed on all newly
149  * created files and directories.
150  *
151  * XXX temporarily suppress check when on Windows, because there may not
152  * be proper support for Unix-y file permissions. Need to think of a
153  * reasonable check to apply on Windows.
154  */
155 #if !defined(WIN32) && !defined(__CYGWIN__)
156  if (stat_buf.st_mode & PG_MODE_MASK_GROUP)
157  ereport(FATAL,
158  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
159  errmsg("data directory \"%s\" has invalid permissions",
160  DataDir),
161  errdetail("Permissions should be u=rwx (0700) or u=rwx,g=rx (0750).")));
162 #endif
163 
164  /*
165  * Reset creation modes and mask based on the mode of the data directory.
166  *
167  * The mask was set earlier in startup to disallow group permissions on
168  * newly created files and directories. However, if group read/execute
169  * are present on the data directory then modify the create modes and mask
170  * to allow group read/execute on newly created files and directories and
171  * set the data_directory_mode GUC.
172  *
173  * Suppress when on Windows, because there may not be proper support for
174  * Unix-y file permissions.
175  */
176 #if !defined(WIN32) && !defined(__CYGWIN__)
178 
179  umask(pg_mode_mask);
181 #endif
182 
183  /* Check for PG_VERSION */
185 }
int errhint(const char *fmt,...)
Definition: elog.c:974
void ValidatePgVersion(const char *path)
Definition: miscinit.c:1458
int errcode(int sqlerrcode)
Definition: elog.c:570
#define PG_MODE_MASK_GROUP
Definition: file_perm.h:29
struct stat stat_buf
Definition: pg_standby.c:102
#define FATAL
Definition: elog.h:52
int errdetail(const char *fmt,...)
Definition: elog.c:860
int errcode_for_file_access(void)
Definition: elog.c:593
#define ereport(elevel, rest)
Definition: elog.h:141
#define stat(a, b)
Definition: win32_port.h:266
int pg_dir_create_mode
Definition: file_perm.c:18
#define Assert(condition)
Definition: c.h:732
#define S_ISDIR(m)
Definition: win32_port.h:307
int errmsg(const char *fmt,...)
Definition: elog.c:784
int data_directory_mode
Definition: globals.c:68
void SetDataDirectoryCreatePerm(int dataDirMode)
Definition: file_perm.c:34
char * DataDir
Definition: globals.c:62
int pg_mode_mask
Definition: file_perm.c:25

◆ CreateDataDirLockFile()

void CreateDataDirLockFile ( bool  amPostmaster)

Definition at line 1181 of file miscinit.c.

References CreateLockFile(), DataDir, and DIRECTORY_LOCK_FILE.

Referenced by AuxiliaryProcessMain(), PostgresMain(), and PostmasterMain().

1182 {
1183  CreateLockFile(DIRECTORY_LOCK_FILE, amPostmaster, "", true, DataDir);
1184 }
#define DIRECTORY_LOCK_FILE
Definition: miscinit.c:58
static void CreateLockFile(const char *filename, bool amPostmaster, const char *socketDir, bool isDDLock, const char *refName)
Definition: miscinit.c:872
char * DataDir
Definition: globals.c:62

◆ CreateSocketLockFile()

void CreateSocketLockFile ( const char *  socketfile,
bool  amPostmaster,
const char *  socketDir 
)

Definition at line 1190 of file miscinit.c.

References CreateLockFile(), MAXPGPATH, and snprintf.

Referenced by StreamServerPort().

1192 {
1193  char lockfile[MAXPGPATH];
1194 
1195  snprintf(lockfile, sizeof(lockfile), "%s.lock", socketfile);
1196  CreateLockFile(lockfile, amPostmaster, socketDir, false, socketfile);
1197 }
static void CreateLockFile(const char *filename, bool amPostmaster, const char *socketDir, bool isDDLock, const char *refName)
Definition: miscinit.c:872
#define MAXPGPATH
#define snprintf
Definition: port.h:192

◆ GetAuthenticatedUserId()

Oid GetAuthenticatedUserId ( void  )

Definition at line 439 of file miscinit.c.

References AssertState, AuthenticatedUserId, and OidIsValid.

Referenced by InitializeParallelDSM().

440 {
442  return AuthenticatedUserId;
443 }
#define AssertState(condition)
Definition: c.h:735
#define OidIsValid(objectId)
Definition: c.h:638
static Oid AuthenticatedUserId
Definition: miscinit.c:253

◆ GetCurrentRoleId()

Oid GetCurrentRoleId ( void  )

Definition at line 739 of file miscinit.c.

References InvalidOid, OuterUserId, and SetRoleIsActive.

Referenced by InitializeParallelDSM(), and show_role().

740 {
741  if (SetRoleIsActive)
742  return OuterUserId;
743  else
744  return InvalidOid;
745 }
static Oid OuterUserId
Definition: miscinit.c:255
#define InvalidOid
Definition: postgres_ext.h:36
static bool SetRoleIsActive
Definition: miscinit.c:265

◆ GetOuterUserId()

Oid GetOuterUserId ( void  )

Definition at line 391 of file miscinit.c.

References AssertState, OidIsValid, and OuterUserId.

Referenced by DropRole(), and RenameRole().

392 {
394  return OuterUserId;
395 }
#define AssertState(condition)
Definition: c.h:735
static Oid OuterUserId
Definition: miscinit.c:255
#define OidIsValid(objectId)
Definition: c.h:638

◆ GetSessionUserId()

Oid GetSessionUserId ( void  )

Definition at line 414 of file miscinit.c.

References AssertState, OidIsValid, and SessionUserId.

Referenced by check_role(), DropRole(), get_rolespec_oid(), get_rolespec_tuple(), InitPostgres(), is_admin_of_role(), pgstat_bestart(), RenameRole(), and session_user().

415 {
417  return SessionUserId;
418 }
#define AssertState(condition)
Definition: c.h:735
static Oid SessionUserId
Definition: miscinit.c:254
#define OidIsValid(objectId)
Definition: c.h:638

◆ GetUserId()

Oid GetUserId ( void  )

Definition at line 380 of file miscinit.c.

References AssertState, CurrentUserId, and OidIsValid.

Referenced by AddRoleMems(), AggregateCreate(), AlterCollation(), AlterDatabase(), AlterDatabaseOwner(), AlterDatabaseSet(), AlterEventTrigger(), AlterEventTriggerOwner_internal(), AlterExtensionNamespace(), AlterForeignServer(), AlterForeignServerOwner_internal(), AlterFunction(), AlterObjectNamespace_internal(), AlterObjectOwner_internal(), AlterObjectRename_internal(), AlterOperator(), AlterOpFamilyAdd(), AlterPublication(), AlterPublicationOwner_internal(), AlterRole(), AlterRoleSet(), AlterSchemaOwner_internal(), AlterSubscription(), AlterSubscriptionOwner_internal(), AlterTableMoveAll(), AlterTableSpaceOptions(), AlterTSConfiguration(), AlterTSDictionary(), AlterTypeNamespace_oid(), AlterTypeOwner(), ATExecAddColumn(), ATExecChangeOwner(), ATPrepAlterColumnType(), ATPrepSetStatistics(), ATPrepSetTableSpace(), ATSimplePermissions(), be_lo_put(), be_lo_unlink(), binary_upgrade_create_empty_extension(), brin_desummarize_range(), brin_summarize_range(), BuildCachedPlan(), BuildDescForRelation(), BuildIndexValueDescription(), calculate_database_size(), calculate_tablespace_size(), call_pltcl_start_proc(), check_enable_rls(), check_permissions(), check_temp_tablespaces(), CheckCachedPlan(), checkDomainOwner(), checkEnumOwner(), checkFkeyPermissions(), CheckFunctionValidatorAccess(), CheckMyDatabase(), cluster_rel(), CommentObject(), compile_plperl_function(), compile_pltcl_function(), CompleteCachedPlan(), compute_return_type(), convert_and_check_filename(), create_foreign_modify(), CreateCast(), CreateConversionCommand(), createdb(), CreateEventTrigger(), CreateExtensionInternal(), CreateForeignDataWrapper(), CreateForeignServer(), CreateForeignTable(), CreateFunction(), CreateOpFamily(), CreateProceduralLanguage(), CreatePublication(), CreateRole(), CreateStatistics(), CreateSubscription(), CreateTableSpace(), CreateTransform(), CreateTrigger(), current_user(), currtid_byrelname(), currtid_byreloid(), currval_oid(), DefineAggregate(), DefineCollation(), DefineDomain(), DefineEnum(), DefineIndex(), DefineOpClass(), DefineOperator(), DefineOpFamily(), DefineQueryRewrite(), DefineRange(), DefineRelation(), DefineTSConfiguration(), DefineTSDictionary(), DefineType(), DelRoleMems(), do_setval(), DoCopy(), dropdb(), DropOwnedObjects(), DropRole(), DropSubscription(), DropTableSpace(), EnableDisableRule(), examine_simple_variable(), examine_variable(), ExecAlterDefaultPrivilegesStmt(), ExecAlterExtensionContentsStmt(), ExecAlterExtensionStmt(), ExecBuildGroupingEqual(), ExecBuildSlotPartitionKeyDescription(), ExecBuildSlotValueDescription(), ExecCheckRTEPerms(), ExecGrant_Attribute(), ExecGrant_Database(), ExecGrant_Fdw(), ExecGrant_ForeignServer(), ExecGrant_Function(), ExecGrant_Language(), ExecGrant_Largeobject(), ExecGrant_Namespace(), ExecGrant_Relation(), ExecGrant_Tablespace(), ExecGrant_Type(), ExecInitAgg(), ExecInitExprRec(), ExecInitFunc(), ExecInitWindowAgg(), ExecSecLabelStmt(), ExecuteCallStmt(), ExecuteDoStmt(), ExecuteTruncateGuts(), file_fdw_validator(), findRangeCanonicalFunction(), findRangeSubtypeDiffFunction(), FinishPreparedTransaction(), get_connect_string(), get_other_operator(), get_rel_from_relname(), get_rolespec_oid(), get_rolespec_tuple(), get_row_security_policies(), get_tables_to_cluster(), GetConfigOption(), GetConfigOptionByName(), GetConfigOptionByNum(), GetConfigOptionResetString(), gin_clean_pending_list(), GrantRole(), HandleFunctionRequest(), has_any_column_privilege_id(), has_any_column_privilege_name(), has_column_privilege_id_attnum(), has_column_privilege_id_name(), has_column_privilege_name_attnum(), has_column_privilege_name_name(), has_database_privilege_id(), has_database_privilege_name(), has_foreign_data_wrapper_privilege_id(), has_foreign_data_wrapper_privilege_name(), has_function_privilege_id(), has_function_privilege_name(), has_language_privilege_id(), has_language_privilege_name(), has_schema_privilege_id(), has_schema_privilege_name(), has_sequence_privilege_id(), has_sequence_privilege_name(), has_server_privilege_id(), has_server_privilege_name(), has_table_privilege_id(), has_table_privilege_name(), has_tablespace_privilege_id(), has_tablespace_privilege_name(), has_type_privilege_id(), has_type_privilege_name(), have_createdb_privilege(), have_createrole_privilege(), ImportForeignSchema(), init_sexpr(), InitializeSearchPath(), InitPostgres(), InitTempTableNamespace(), inline_function(), inline_set_returning_function(), insert_username(), interpret_function_parameter_list(), inv_create(), inv_open(), LargeObjectCreate(), lastval(), LockTableCommand(), lookup_agg_function(), LookupCreationNamespace(), LookupExplicitNamespace(), MergeAttributes(), movedb(), nextval_internal(), OperatorCreate(), OperatorShellMake(), pg_has_role_id(), pg_has_role_name(), pg_import_system_collations(), pg_prewarm(), pg_sequence_last_value(), pg_sequence_parameters(), pg_signal_backend(), pg_stat_get_activity(), pg_stat_get_backend_activity(), pg_stat_get_backend_activity_start(), pg_stat_get_backend_client_addr(), pg_stat_get_backend_client_port(), pg_stat_get_backend_start(), pg_stat_get_backend_wait_event(), pg_stat_get_backend_wait_event_type(), pg_stat_get_backend_xact_start(), pg_stat_get_progress_info(), pg_stat_get_wal_receiver(), pg_stat_get_wal_senders(), pg_stat_statements_internal(), pgrowlocks(), pgss_store(), pgstat_get_backend_current_activity(), pltcl_fetch_interp(), postgresBeginDirectModify(), postgresBeginForeignScan(), postgresGetForeignRelSize(), postgresImportForeignSchema(), PrepareTempTablespaces(), PrepareTransaction(), PublicationAddTables(), RangeVarCallbackForAlterRelation(), RangeVarCallbackForDropRelation(), RangeVarCallbackForLockTable(), RangeVarCallbackForPolicy(), RangeVarCallbackForReindexIndex(), RangeVarCallbackForRenameRule(), RangeVarCallbackForRenameTrigger(), RangeVarCallbackOwnsRelation(), RangeVarCallbackOwnsTable(), RangeVarGetAndCheckCreationNamespace(), ReassignOwnedObjects(), recomputeNamespacePath(), ReindexMultipleTables(), RemoveObjects(), RemoveRoleFromObjectPolicy(), renameatt_check(), RenameDatabase(), RenameSchema(), RenameTableSpace(), RenameType(), RevalidateCachedQuery(), RI_Initial_Check(), ri_ReportViolation(), select_perl_context(), set_foreign_rel_properties(), ShowAllGUCConfig(), superuser(), transformTableLikeClause(), truncate_check_rel(), user_mapping_ddl_aclcheck(), vacuum_is_relation_owner(), ValidateJoinEstimator(), and ValidateRestrictionEstimator().

381 {
383  return CurrentUserId;
384 }
#define AssertState(condition)
Definition: c.h:735
#define OidIsValid(objectId)
Definition: c.h:638
static Oid CurrentUserId
Definition: miscinit.c:256

◆ GetUserIdAndContext()

void GetUserIdAndContext ( Oid userid,
bool sec_def_context 
)

Definition at line 534 of file miscinit.c.

References CurrentUserId, and InLocalUserIdChange().

535 {
536  *userid = CurrentUserId;
537  *sec_def_context = InLocalUserIdChange();
538 }
bool InLocalUserIdChange(void)
Definition: miscinit.c:503
static Oid CurrentUserId
Definition: miscinit.c:256

◆ GetUserIdAndSecContext()

void GetUserIdAndSecContext ( Oid userid,
int *  sec_context 
)

◆ GetUserNameFromId()

char* GetUserNameFromId ( Oid  roleid,
bool  noerr 
)

Definition at line 795 of file miscinit.c.

References AUTHOID, ereport, errcode(), errmsg(), ERROR, GETSTRUCT, HeapTupleIsValid, NameStr, ObjectIdGetDatum, pstrdup(), ReleaseSysCache(), and SearchSysCache1().

Referenced by check_is_member_of_role(), current_user(), getObjectDescription(), getObjectIdentityParts(), insert_username(), regroleout(), RemoveRoleFromObjectPolicy(), and session_user().

796 {
797  HeapTuple tuple;
798  char *result;
799 
800  tuple = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
801  if (!HeapTupleIsValid(tuple))
802  {
803  if (!noerr)
804  ereport(ERROR,
805  (errcode(ERRCODE_UNDEFINED_OBJECT),
806  errmsg("invalid role OID: %u", roleid)));
807  result = NULL;
808  }
809  else
810  {
811  result = pstrdup(NameStr(((Form_pg_authid) GETSTRUCT(tuple))->rolname));
812  ReleaseSysCache(tuple);
813  }
814  return result;
815 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:668
char * pstrdup(const char *in)
Definition: mcxt.c:1161
int errcode(int sqlerrcode)
Definition: elog.c:570
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:55
#define ObjectIdGetDatum(X)
Definition: postgres.h:492
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:141
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1112
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1160
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
int errmsg(const char *fmt,...)
Definition: elog.c:784
#define NameStr(name)
Definition: c.h:609

◆ has_rolreplication()

bool has_rolreplication ( Oid  roleid)

Definition at line 561 of file miscinit.c.

References AUTHOID, GETSTRUCT, HeapTupleIsValid, ObjectIdGetDatum, ReleaseSysCache(), rolreplication, and SearchSysCache1().

Referenced by check_permissions(), and InitPostgres().

562 {
563  bool result = false;
564  HeapTuple utup;
565 
566  utup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
567  if (HeapTupleIsValid(utup))
568  {
569  result = ((Form_pg_authid) GETSTRUCT(utup))->rolreplication;
570  ReleaseSysCache(utup);
571  }
572  return result;
573 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:668
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:55
#define ObjectIdGetDatum(X)
Definition: postgres.h:492
bool rolreplication
Definition: pg_authid.h:39
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1112
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1160
#define HeapTupleIsValid(tuple)
Definition: htup.h:78

◆ InitializeMaxBackends()

void InitializeMaxBackends ( void  )

Definition at line 524 of file postinit.c.

References Assert, autovacuum_max_workers, elog, ERROR, MAX_BACKENDS, max_worker_processes, MaxBackends, and MaxConnections.

Referenced by AuxiliaryProcessMain(), PostgresMain(), and PostmasterMain().

525 {
526  Assert(MaxBackends == 0);
527 
528  /* the extra unit accounts for the autovacuum launcher */
531 
532  /* internal error because the values were all checked previously */
534  elog(ERROR, "too many backends configured");
535 }
#define ERROR
Definition: elog.h:43
#define MAX_BACKENDS
Definition: postmaster.h:76
int MaxBackends
Definition: globals.c:135
int MaxConnections
Definition: globals.c:132
int autovacuum_max_workers
Definition: autovacuum.c:114
#define Assert(condition)
Definition: c.h:732
#define elog(elevel,...)
Definition: elog.h:226
int max_worker_processes
Definition: globals.c:133

◆ InitializeSessionUserId()

void InitializeSessionUserId ( const char *  rolename,
Oid  useroid 
)

Definition at line 579 of file miscinit.c.

References AcceptInvalidationMessages(), AssertState, AuthenticatedUserId, AuthenticatedUserIsSuperuser, AUTHNAME, AUTHOID, CountUserBackends(), ereport, errcode(), errmsg(), FATAL, GETSTRUCT, HeapTupleGetOid, HeapTupleIsValid, IsBootstrapProcessingMode, IsUnderPostmaster, MyProc, NameStr, ObjectIdGetDatum, OidIsValid, PGC_BACKEND, PGC_INTERNAL, PGC_S_OVERRIDE, PointerGetDatum, ReleaseSysCache(), PGPROC::roleId, SearchSysCache1(), SetConfigOption(), and SetSessionUserId().

Referenced by InitPostgres().

580 {
581  HeapTuple roleTup;
582  Form_pg_authid rform;
583  char *rname;
584 
585  /*
586  * Don't do scans if we're bootstrapping, none of the system catalogs
587  * exist yet, and they should be owned by postgres anyway.
588  */
590 
591  /* call only once */
593 
594  /*
595  * Make sure syscache entries are flushed for recent catalog changes.
596  * This allows us to find roles that were created on-the-fly during
597  * authentication.
598  */
600 
601  if (rolename != NULL)
602  {
603  roleTup = SearchSysCache1(AUTHNAME, PointerGetDatum(rolename));
604  if (!HeapTupleIsValid(roleTup))
605  ereport(FATAL,
606  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
607  errmsg("role \"%s\" does not exist", rolename)));
608  }
609  else
610  {
611  roleTup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
612  if (!HeapTupleIsValid(roleTup))
613  ereport(FATAL,
614  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
615  errmsg("role with OID %u does not exist", roleid)));
616  }
617 
618  rform = (Form_pg_authid) GETSTRUCT(roleTup);
619  roleid = HeapTupleGetOid(roleTup);
620  rname = NameStr(rform->rolname);
621 
622  AuthenticatedUserId = roleid;
623  AuthenticatedUserIsSuperuser = rform->rolsuper;
624 
625  /* This sets OuterUserId/CurrentUserId too */
627 
628  /* Also mark our PGPROC entry with the authenticated user id */
629  /* (We assume this is an atomic store so no lock is needed) */
630  MyProc->roleId = roleid;
631 
632  /*
633  * These next checks are not enforced when in standalone mode, so that
634  * there is a way to recover from sillinesses like "UPDATE pg_authid SET
635  * rolcanlogin = false;".
636  */
637  if (IsUnderPostmaster)
638  {
639  /*
640  * Is role allowed to login at all?
641  */
642  if (!rform->rolcanlogin)
643  ereport(FATAL,
644  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
645  errmsg("role \"%s\" is not permitted to log in",
646  rname)));
647 
648  /*
649  * Check connection limit for this role.
650  *
651  * There is a race condition here --- we create our PGPROC before
652  * checking for other PGPROCs. If two backends did this at about the
653  * same time, they might both think they were over the limit, while
654  * ideally one should succeed and one fail. Getting that to work
655  * exactly seems more trouble than it is worth, however; instead we
656  * just document that the connection limit is approximate.
657  */
658  if (rform->rolconnlimit >= 0 &&
660  CountUserBackends(roleid) > rform->rolconnlimit)
661  ereport(FATAL,
662  (errcode(ERRCODE_TOO_MANY_CONNECTIONS),
663  errmsg("too many connections for role \"%s\"",
664  rname)));
665  }
666 
667  /* Record username and superuser status as GUC settings too */
668  SetConfigOption("session_authorization", rname,
670  SetConfigOption("is_superuser",
671  AuthenticatedUserIsSuperuser ? "on" : "off",
673 
674  ReleaseSysCache(roleTup);
675 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:668
#define AssertState(condition)
Definition: c.h:735
void AcceptInvalidationMessages(void)
Definition: inval.c:679
PGPROC * MyProc
Definition: proc.c:67
#define PointerGetDatum(X)
Definition: postgres.h:541
Oid roleId
Definition: proc.h:115
int errcode(int sqlerrcode)
Definition: elog.c:570
#define OidIsValid(objectId)
Definition: c.h:638
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:55
#define ObjectIdGetDatum(X)
Definition: postgres.h:492
#define FATAL
Definition: elog.h:52
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:6951
bool IsUnderPostmaster
Definition: globals.c:109
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:259
#define ereport(elevel, rest)
Definition: elog.h:141
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1112
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1160
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
int CountUserBackends(Oid roleid)
Definition: procarray.c:2873
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:374
int errmsg(const char *fmt,...)
Definition: elog.c:784
#define NameStr(name)
Definition: c.h:609
#define HeapTupleGetOid(tuple)
Definition: htup_details.h:707
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:422
static Oid AuthenticatedUserId
Definition: miscinit.c:253

◆ InitializeSessionUserIdStandalone()

void InitializeSessionUserIdStandalone ( void  )

Definition at line 682 of file miscinit.c.

References AssertState, AuthenticatedUserId, AuthenticatedUserIsSuperuser, IsAutoVacuumWorkerProcess(), IsBackgroundWorker, IsUnderPostmaster, OidIsValid, and SetSessionUserId().

Referenced by InitPostgres().

683 {
684  /*
685  * This function should only be called in single-user mode, in autovacuum
686  * workers, and in background workers.
687  */
689 
690  /* call only once */
692 
693  AuthenticatedUserId = BOOTSTRAP_SUPERUSERID;
695 
696  SetSessionUserId(BOOTSTRAP_SUPERUSERID, true);
697 }
#define AssertState(condition)
Definition: c.h:735
#define OidIsValid(objectId)
Definition: c.h:638
bool IsBackgroundWorker
Definition: globals.c:111
bool IsUnderPostmaster
Definition: globals.c:109
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:259
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:3285
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:422
static Oid AuthenticatedUserId
Definition: miscinit.c:253

◆ InitPostgres()

void InitPostgres ( const char *  in_dbname,
Oid  dboid,
const char *  username,
Oid  useroid,
char *  out_dbname,
bool  override_allow_connections 
)

Definition at line 587 of file postinit.c.

References am_db_walsender, am_walsender, Assert, before_shmem_exit(), CAC_WAITBACKUP, Port::canAcceptConnections, CheckDeadLockAlert(), CheckMyDatabase(), CommitTransactionCommand(), CreateAuxProcessResourceOwner(), CurrentResourceOwner, PGPROC::databaseId, dattablespace, dbname, DEADLOCK_TIMEOUT, DEBUG3, elog, EnablePortalManager(), ereport, errcode(), errcode_for_file_access(), errdetail(), errhint(), errmsg(), FATAL, GetDatabasePath(), GetDatabaseTuple(), GetDatabaseTupleByOid(), GetSessionUserId(), GETSTRUCT, GetTransactionSnapshot(), GetUserId(), has_rolreplication(), HaveNFreeProcs(), HeapTupleGetOid, HeapTupleIsValid, IDLE_IN_TRANSACTION_SESSION_TIMEOUT, IdleInTransactionSessionTimeoutHandler(), InitBufferPoolBackend(), InitCatalogCache(), initialize_acl(), InitializeClientEncoding(), InitializeSearchPath(), InitializeSession(), InitializeSessionUserId(), InitializeSessionUserIdStandalone(), InitPlanCache(), InitProcessPhase2(), InvalidateCatalogSnapshot(), InvalidBackendId, IsAutoVacuumLauncherProcess(), IsAutoVacuumWorkerProcess(), IsBackgroundWorker, IsBinaryUpgrade, IsBootstrapProcessingMode, IsUnderPostmaster, LOCK_TIMEOUT, LockSharedObject(), LockTimeoutHandler(), MaxBackends, MyBackendId, MyDatabaseId, MyDatabaseTableSpace, MyProc, MyProcPort, NAMEDATALEN, NameStr, OidIsValid, on_shmem_exit(), PerformAuthentication(), pg_usleep(), pgstat_bestart(), pgstat_initialize(), PostAuthDelay, process_settings(), process_startup_options(), ProcSignalInit(), RecoveryInProgress(), RegisterTimeout(), RelationCacheInitialize(), RelationCacheInitializePhase2(), RelationCacheInitializePhase3(), ReleaseAuxProcessResources(), ReservedBackends, RowExclusiveLock, SetCurrentStatementStartTimestamp(), SetDatabasePath(), SharedInvalBackendInit(), ShutdownPostgres(), ShutdownXLOG(), StartTransactionCommand(), StartupXLOG(), STATEMENT_TIMEOUT, StatementTimeoutHandler(), strlcpy(), superuser(), ThereIsAtLeastOneRole(), ValidatePgVersion(), WARNING, XACT_READ_COMMITTED, and XactIsoLevel.

Referenced by AutoVacLauncherMain(), AutoVacWorkerMain(), BackgroundWorkerInitializeConnection(), BackgroundWorkerInitializeConnectionByOid(), BootstrapModeMain(), and PostgresMain().

589 {
590  bool bootstrap = IsBootstrapProcessingMode();
591  bool am_superuser;
592  char *fullpath;
593  char dbname[NAMEDATALEN];
594 
595  elog(DEBUG3, "InitPostgres");
596 
597  /*
598  * Add my PGPROC struct to the ProcArray.
599  *
600  * Once I have done this, I am visible to other backends!
601  */
603 
604  /*
605  * Initialize my entry in the shared-invalidation manager's array of
606  * per-backend data.
607  *
608  * Sets up MyBackendId, a unique backend identifier.
609  */
611 
612  SharedInvalBackendInit(false);
613 
614  if (MyBackendId > MaxBackends || MyBackendId <= 0)
615  elog(FATAL, "bad backend ID: %d", MyBackendId);
616 
617  /* Now that we have a BackendId, we can participate in ProcSignal */
619 
620  /*
621  * Also set up timeout handlers needed for backend operation. We need
622  * these in every case except bootstrap.
623  */
624  if (!bootstrap)
625  {
631  }
632 
633  /*
634  * bufmgr needs another initialization call too
635  */
637 
638  /*
639  * Initialize local process's access to XLOG.
640  */
641  if (IsUnderPostmaster)
642  {
643  /*
644  * The postmaster already started the XLOG machinery, but we need to
645  * call InitXLOGAccess(), if the system isn't in hot-standby mode.
646  * This is handled by calling RecoveryInProgress and ignoring the
647  * result.
648  */
649  (void) RecoveryInProgress();
650  }
651  else
652  {
653  /*
654  * We are either a bootstrap process or a standalone backend. Either
655  * way, start up the XLOG machinery, and register to have it closed
656  * down at exit.
657  *
658  * We don't yet have an aux-process resource owner, but StartupXLOG
659  * and ShutdownXLOG will need one. Hence, create said resource owner
660  * (and register a callback to clean it up after ShutdownXLOG runs).
661  */
663 
664  StartupXLOG();
665  /* Release (and warn about) any buffer pins leaked in StartupXLOG */
667  /* Reset CurrentResourceOwner to nothing for the moment */
668  CurrentResourceOwner = NULL;
669 
671  }
672 
673  /*
674  * Initialize the relation cache and the system catalog caches. Note that
675  * no catalog access happens here; we only set up the hashtable structure.
676  * We must do this before starting a transaction because transaction abort
677  * would try to touch these hashtables.
678  */
681  InitPlanCache();
682 
683  /* Initialize portal manager */
685 
686  /* Initialize stats collection --- must happen before first xact */
687  if (!bootstrap)
689 
690  /*
691  * Load relcache entries for the shared system catalogs. This must create
692  * at least entries for pg_database and catalogs used for authentication.
693  */
695 
696  /*
697  * Set up process-exit callback to do pre-shutdown cleanup. This is the
698  * first before_shmem_exit callback we register; thus, this will be the
699  * last thing we do before low-level modules like the buffer manager begin
700  * to close down. We need to have this in place before we begin our first
701  * transaction --- if we fail during the initialization transaction, as is
702  * entirely possible, we need the AbortTransaction call to clean up.
703  */
705 
706  /* The autovacuum launcher is done here */
708  {
709  /* report this backend in the PgBackendStatus array */
710  pgstat_bestart();
711 
712  return;
713  }
714 
715  /*
716  * Start a new transaction here before first access to db, and get a
717  * snapshot. We don't have a use for the snapshot itself, but we're
718  * interested in the secondary effect that it sets RecentGlobalXmin. (This
719  * is critical for anything that reads heap pages, because HOT may decide
720  * to prune them even if the process doesn't attempt to modify any
721  * tuples.)
722  */
723  if (!bootstrap)
724  {
725  /* statement_timestamp must be set for timeouts to work correctly */
728 
729  /*
730  * transaction_isolation will have been set to the default by the
731  * above. If the default is "serializable", and we are in hot
732  * standby, we will fail if we don't change it to something lower.
733  * Fortunately, "read committed" is plenty good enough.
734  */
736 
737  (void) GetTransactionSnapshot();
738  }
739 
740  /*
741  * Perform client authentication if necessary, then figure out our
742  * postgres user ID, and see if we are a superuser.
743  *
744  * In standalone mode and in autovacuum worker processes, we use a fixed
745  * ID, otherwise we figure it out from the authenticated user name.
746  */
747  if (bootstrap || IsAutoVacuumWorkerProcess())
748  {
750  am_superuser = true;
751  }
752  else if (!IsUnderPostmaster)
753  {
755  am_superuser = true;
756  if (!ThereIsAtLeastOneRole())
758  (errcode(ERRCODE_UNDEFINED_OBJECT),
759  errmsg("no roles are defined in this database system"),
760  errhint("You should immediately run CREATE USER \"%s\" SUPERUSER;.",
761  username != NULL ? username : "postgres")));
762  }
763  else if (IsBackgroundWorker)
764  {
765  if (username == NULL && !OidIsValid(useroid))
766  {
768  am_superuser = true;
769  }
770  else
771  {
773  am_superuser = superuser();
774  }
775  }
776  else
777  {
778  /* normal multiuser case */
779  Assert(MyProcPort != NULL);
782  am_superuser = superuser();
783  }
784 
785  /*
786  * If we're trying to shut down, only superusers can connect, and new
787  * replication connections are not allowed.
788  */
789  if ((!am_superuser || am_walsender) &&
790  MyProcPort != NULL &&
792  {
793  if (am_walsender)
794  ereport(FATAL,
795  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
796  errmsg("new replication connections are not allowed during database shutdown")));
797  else
798  ereport(FATAL,
799  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
800  errmsg("must be superuser to connect during database shutdown")));
801  }
802 
803  /*
804  * Binary upgrades only allowed super-user connections
805  */
806  if (IsBinaryUpgrade && !am_superuser)
807  {
808  ereport(FATAL,
809  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
810  errmsg("must be superuser to connect in binary upgrade mode")));
811  }
812 
813  /*
814  * The last few connection slots are reserved for superusers. Although
815  * replication connections currently require superuser privileges, we
816  * don't allow them to consume the reserved slots, which are intended for
817  * interactive use.
818  */
819  if ((!am_superuser || am_walsender) &&
820  ReservedBackends > 0 &&
822  ereport(FATAL,
823  (errcode(ERRCODE_TOO_MANY_CONNECTIONS),
824  errmsg("remaining connection slots are reserved for non-replication superuser connections")));
825 
826  /* Check replication permissions needed for walsender processes. */
827  if (am_walsender)
828  {
829  Assert(!bootstrap);
830 
831  if (!superuser() && !has_rolreplication(GetUserId()))
832  ereport(FATAL,
833  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
834  errmsg("must be superuser or replication role to start walsender")));
835  }
836 
837  /*
838  * If this is a plain walsender only supporting physical replication, we
839  * don't want to connect to any particular database. Just finish the
840  * backend startup by processing any options from the startup packet, and
841  * we're done.
842  */
844  {
845  /* process any options passed in the startup packet */
846  if (MyProcPort != NULL)
847  process_startup_options(MyProcPort, am_superuser);
848 
849  /* Apply PostAuthDelay as soon as we've read all options */
850  if (PostAuthDelay > 0)
851  pg_usleep(PostAuthDelay * 1000000L);
852 
853  /* initialize client encoding */
855 
856  /* report this backend in the PgBackendStatus array */
857  pgstat_bestart();
858 
859  /* close the transaction we started above */
861 
862  return;
863  }
864 
865  /*
866  * Set up the global variables holding database id and default tablespace.
867  * But note we won't actually try to touch the database just yet.
868  *
869  * We take a shortcut in the bootstrap case, otherwise we have to look up
870  * the db's entry in pg_database.
871  */
872  if (bootstrap)
873  {
874  MyDatabaseId = TemplateDbOid;
875  MyDatabaseTableSpace = DEFAULTTABLESPACE_OID;
876  }
877  else if (in_dbname != NULL)
878  {
879  HeapTuple tuple;
880  Form_pg_database dbform;
881 
882  tuple = GetDatabaseTuple(in_dbname);
883  if (!HeapTupleIsValid(tuple))
884  ereport(FATAL,
885  (errcode(ERRCODE_UNDEFINED_DATABASE),
886  errmsg("database \"%s\" does not exist", in_dbname)));
887  dbform = (Form_pg_database) GETSTRUCT(tuple);
888  MyDatabaseId = HeapTupleGetOid(tuple);
889  MyDatabaseTableSpace = dbform->dattablespace;
890  /* take database name from the caller, just for paranoia */
891  strlcpy(dbname, in_dbname, sizeof(dbname));
892  }
893  else if (OidIsValid(dboid))
894  {
895  /* caller specified database by OID */
896  HeapTuple tuple;
897  Form_pg_database dbform;
898 
899  tuple = GetDatabaseTupleByOid(dboid);
900  if (!HeapTupleIsValid(tuple))
901  ereport(FATAL,
902  (errcode(ERRCODE_UNDEFINED_DATABASE),
903  errmsg("database %u does not exist", dboid)));
904  dbform = (Form_pg_database) GETSTRUCT(tuple);
905  MyDatabaseId = HeapTupleGetOid(tuple);
906  MyDatabaseTableSpace = dbform->dattablespace;
907  Assert(MyDatabaseId == dboid);
908  strlcpy(dbname, NameStr(dbform->datname), sizeof(dbname));
909  /* pass the database name back to the caller */
910  if (out_dbname)
911  strcpy(out_dbname, dbname);
912  }
913  else
914  {
915  /*
916  * If this is a background worker not bound to any particular
917  * database, we're done now. Everything that follows only makes sense
918  * if we are bound to a specific database. We do need to close the
919  * transaction we started before returning.
920  */
921  if (!bootstrap)
922  {
923  pgstat_bestart();
925  }
926  return;
927  }
928 
929  /*
930  * Now, take a writer's lock on the database we are trying to connect to.
931  * If there is a concurrently running DROP DATABASE on that database, this
932  * will block us until it finishes (and has committed its update of
933  * pg_database).
934  *
935  * Note that the lock is not held long, only until the end of this startup
936  * transaction. This is OK since we will advertise our use of the
937  * database in the ProcArray before dropping the lock (in fact, that's the
938  * next thing to do). Anyone trying a DROP DATABASE after this point will
939  * see us in the array once they have the lock. Ordering is important for
940  * this because we don't want to advertise ourselves as being in this
941  * database until we have the lock; otherwise we create what amounts to a
942  * deadlock with CountOtherDBBackends().
943  *
944  * Note: use of RowExclusiveLock here is reasonable because we envision
945  * our session as being a concurrent writer of the database. If we had a
946  * way of declaring a session as being guaranteed-read-only, we could use
947  * AccessShareLock for such sessions and thereby not conflict against
948  * CREATE DATABASE.
949  */
950  if (!bootstrap)
951  LockSharedObject(DatabaseRelationId, MyDatabaseId, 0,
953 
954  /*
955  * Now we can mark our PGPROC entry with the database ID.
956  *
957  * We assume this is an atomic store so no lock is needed; though actually
958  * things would work fine even if it weren't atomic. Anyone searching the
959  * ProcArray for this database's ID should hold the database lock, so they
960  * would not be executing concurrently with this store. A process looking
961  * for another database's ID could in theory see a chance match if it read
962  * a partially-updated databaseId value; but as long as all such searches
963  * wait and retry, as in CountOtherDBBackends(), they will certainly see
964  * the correct value on their next try.
965  */
967 
968  /*
969  * We established a catalog snapshot while reading pg_authid and/or
970  * pg_database; but until we have set up MyDatabaseId, we won't react to
971  * incoming sinval messages for unshared catalogs, so we won't realize it
972  * if the snapshot has been invalidated. Assume it's no good anymore.
973  */
975 
976  /*
977  * Recheck pg_database to make sure the target database hasn't gone away.
978  * If there was a concurrent DROP DATABASE, this ensures we will die
979  * cleanly without creating a mess.
980  */
981  if (!bootstrap)
982  {
983  HeapTuple tuple;
984 
985  tuple = GetDatabaseTuple(dbname);
986  if (!HeapTupleIsValid(tuple) ||
987  MyDatabaseId != HeapTupleGetOid(tuple) ||
989  ereport(FATAL,
990  (errcode(ERRCODE_UNDEFINED_DATABASE),
991  errmsg("database \"%s\" does not exist", dbname),
992  errdetail("It seems to have just been dropped or renamed.")));
993  }
994 
995  /*
996  * Now we should be able to access the database directory safely. Verify
997  * it's there and looks reasonable.
998  */
1000 
1001  if (!bootstrap)
1002  {
1003  if (access(fullpath, F_OK) == -1)
1004  {
1005  if (errno == ENOENT)
1006  ereport(FATAL,
1007  (errcode(ERRCODE_UNDEFINED_DATABASE),
1008  errmsg("database \"%s\" does not exist",
1009  dbname),
1010  errdetail("The database subdirectory \"%s\" is missing.",
1011  fullpath)));
1012  else
1013  ereport(FATAL,
1015  errmsg("could not access directory \"%s\": %m",
1016  fullpath)));
1017  }
1018 
1019  ValidatePgVersion(fullpath);
1020  }
1021 
1022  SetDatabasePath(fullpath);
1023 
1024  /*
1025  * It's now possible to do real access to the system catalogs.
1026  *
1027  * Load relcache entries for the system catalogs. This must create at
1028  * least the minimum set of "nailed-in" cache entries.
1029  */
1031 
1032  /* set up ACL framework (so CheckMyDatabase can check permissions) */
1033  initialize_acl();
1034 
1035  /*
1036  * Re-read the pg_database row for our database, check permissions and set
1037  * up database-specific GUC settings. We can't do this until all the
1038  * database-access infrastructure is up. (Also, it wants to know if the
1039  * user is a superuser, so the above stuff has to happen first.)
1040  */
1041  if (!bootstrap)
1042  CheckMyDatabase(dbname, am_superuser, override_allow_connections);
1043 
1044  /*
1045  * Now process any command-line switches and any additional GUC variable
1046  * settings passed in the startup packet. We couldn't do this before
1047  * because we didn't know if client is a superuser.
1048  */
1049  if (MyProcPort != NULL)
1050  process_startup_options(MyProcPort, am_superuser);
1051 
1052  /* Process pg_db_role_setting options */
1054 
1055  /* Apply PostAuthDelay as soon as we've read all options */
1056  if (PostAuthDelay > 0)
1057  pg_usleep(PostAuthDelay * 1000000L);
1058 
1059  /*
1060  * Initialize various default states that can't be set up until we've
1061  * selected the active user and gotten the right GUC settings.
1062  */
1063 
1064  /* set default namespace search path */
1066 
1067  /* initialize client encoding */
1069 
1070  /* Initialize this backend's session state. */
1072 
1073  /* report this backend in the PgBackendStatus array */
1074  if (!bootstrap)
1075  pgstat_bestart();
1076 
1077  /* close the transaction we started above */
1078  if (!bootstrap)
1080 }
int errhint(const char *fmt,...)
Definition: elog.c:974
BackendId MyBackendId
Definition: globals.c:81
#define GETSTRUCT(TUP)
Definition: htup_details.h:668
struct Port * MyProcPort
Definition: globals.c:43
CAC_state canAcceptConnections
Definition: libpq-be.h:129
void SharedInvalBackendInit(bool sendOnly)
Definition: sinvaladt.c:258
#define DEBUG3
Definition: elog.h:23
Oid GetUserId(void)
Definition: miscinit.c:380
FormData_pg_database * Form_pg_database
Definition: pg_database.h:54
PGPROC * MyProc
Definition: proc.c:67
static HeapTuple GetDatabaseTuple(const char *dbname)
Definition: postinit.c:95
ResourceOwner CurrentResourceOwner
Definition: resowner.c:141
void CommitTransactionCommand(void)
Definition: xact.c:2763
void ReleaseAuxProcessResources(bool isCommit)
Definition: resowner.c:854
void InitializeSession(void)
Definition: session.c:54
void ValidatePgVersion(const char *path)
Definition: miscinit.c:1458
void RelationCacheInitializePhase2(void)
Definition: relcache.c:3483
static void PerformAuthentication(Port *port)
Definition: postinit.c:184
static void LockTimeoutHandler(void)
Definition: postinit.c:1225
int errcode(int sqlerrcode)
Definition: elog.c:570
bool superuser(void)
Definition: superuser.c:47
void initialize_acl(void)
Definition: acl.c:4688
bool RecoveryInProgress(void)
Definition: xlog.c:8065
Snapshot GetTransactionSnapshot(void)
Definition: snapmgr.c:304
#define OidIsValid(objectId)
Definition: c.h:638
Oid GetSessionUserId(void)
Definition: miscinit.c:414
bool HaveNFreeProcs(int n)
Definition: proc.c:655
static void CheckMyDatabase(const char *name, bool am_superuser, bool override_allow_connections)
Definition: postinit.c:315
bool IsBinaryUpgrade
Definition: globals.c:110
Oid MyDatabaseTableSpace
Definition: globals.c:87
bool IsBackgroundWorker
Definition: globals.c:111
void RelationCacheInitializePhase3(void)
Definition: relcache.c:3542
#define NAMEDATALEN
bool am_walsender
Definition: walsender.c:114
void pg_usleep(long microsec)
Definition: signal.c:53
int ReservedBackends
Definition: postmaster.c:214
#define FATAL
Definition: elog.h:52
void InitializeSearchPath(void)
Definition: namespace.c:4203
int MaxBackends
Definition: globals.c:135
void on_shmem_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:361
bool IsUnderPostmaster
Definition: globals.c:109
#define RowExclusiveLock
Definition: lockdefs.h:38
int errdetail(const char *fmt,...)
Definition: elog.c:860
int errcode_for_file_access(void)
Definition: elog.c:593
static void IdleInTransactionSessionTimeoutHandler(void)
Definition: postinit.c:1235
void before_shmem_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:333
Oid databaseId
Definition: proc.h:114
Oid dattablespace
Definition: pg_database.h:42
void pgstat_initialize(void)
Definition: pgstat.c:2745
static bool ThereIsAtLeastOneRole(void)
Definition: postinit.c:1246
void StartupXLOG(void)
Definition: xlog.c:6350
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:3285
#define ereport(elevel, rest)
Definition: elog.h:141
void InvalidateCatalogSnapshot(void)
Definition: snapmgr.c:510
char * GetDatabasePath(Oid dbNode, Oid spcNode)
Definition: relpath.c:107
void SetDatabasePath(const char *path)
Definition: miscinit.c:86
#define WARNING
Definition: elog.h:40
void ShutdownXLOG(int code, Datum arg)
Definition: xlog.c:8496
static HeapTuple GetDatabaseTupleByOid(Oid dboid)
Definition: postinit.c:138
#define InvalidBackendId
Definition: backendid.h:23
bool am_db_walsender
Definition: walsender.c:117
Oid MyDatabaseId
Definition: globals.c:85
int PostAuthDelay
Definition: postgres.c:101
void LockSharedObject(Oid classid, Oid objid, uint16 objsubid, LOCKMODE lockmode)
Definition: lmgr.c:964
void EnablePortalManager(void)
Definition: portalmem.c:104
static void ShutdownPostgres(int code, Datum arg)
Definition: postinit.c:1186
static char * username
Definition: initdb.c:132
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition: strlcpy.c:45
TimeoutId RegisterTimeout(TimeoutId id, timeout_handler_proc handler)
Definition: timeout.c:373
bool IsAutoVacuumLauncherProcess(void)
Definition: autovacuum.c:3279
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define Assert(condition)
Definition: c.h:732
void InitializeSessionUserIdStandalone(void)
Definition: miscinit.c:682
void StartTransactionCommand(void)
Definition: xact.c:2692
void CreateAuxProcessResourceOwner(void)
Definition: resowner.c:833
#define XACT_READ_COMMITTED
Definition: xact.h:36
void InitializeSessionUserId(const char *rolename, Oid roleid)
Definition: miscinit.c:579
char * dbname
Definition: streamutil.c:51
static void process_startup_options(Port *port, bool am_superuser)
Definition: postinit.c:1087
int XactIsoLevel
Definition: xact.c:74
bool has_rolreplication(Oid roleid)
Definition: miscinit.c:561
void InitializeClientEncoding(void)
Definition: mbutils.c:282
void InitPlanCache(void)
Definition: plancache.c:118
void InitProcessPhase2(void)
Definition: proc.c:464
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:374
void RelationCacheInitialize(void)
Definition: relcache.c:3446
void ProcSignalInit(int pss_idx)
Definition: procsignal.c:105
void InitCatalogCache(void)
Definition: syscache.c:998
static void StatementTimeoutHandler(void)
Definition: postinit.c:1203
void SetCurrentStatementStartTimestamp(void)
Definition: xact.c:733
int errmsg(const char *fmt,...)
Definition: elog.c:784
void pgstat_bestart(void)
Definition: pgstat.c:2785
#define elog(elevel,...)
Definition: elog.h:226
#define NameStr(name)
Definition: c.h:609
static void process_settings(Oid databaseid, Oid roleid)
Definition: postinit.c:1152
void CheckDeadLockAlert(void)
Definition: proc.c:1761
void InitBufferPoolBackend(void)
Definition: bufmgr.c:2461
#define HeapTupleGetOid(tuple)
Definition: htup_details.h:707

◆ InitPostmasterChild()

void InitPostmasterChild ( void  )

Definition at line 273 of file miscinit.c.

References elog, FATAL, InitializeLatchSupport(), InitLatch(), InitProcessGlobals(), IsUnderPostmaster, LocalLatchData, MyLatch, on_exit_reset(), and PostmasterDeathSignalInit().

Referenced by BackendRun(), BackendStartup(), do_start_bgworker(), pgarch_start(), pgstat_start(), StartAutoVacLauncher(), StartAutoVacWorker(), StartChildProcess(), and SysLogger_Start().

274 {
275  IsUnderPostmaster = true; /* we are a postmaster subprocess now */
276 
278 
279  /*
280  * make sure stderr is in binary mode before anything can possibly be
281  * written to it, in case it's actually the syslogger pipe, so the pipe
282  * chunking protocol isn't disturbed. Non-logpipe data gets translated on
283  * redirection (e.g. via pg_ctl -l) anyway.
284  */
285 #ifdef WIN32
286  _setmode(fileno(stderr), _O_BINARY);
287 #endif
288 
289  /* We don't want the postmaster's proc_exit() handlers */
290  on_exit_reset();
291 
292  /* Initialize process-local latch support */
296 
297  /*
298  * If possible, make this process a group leader, so that the postmaster
299  * can signal any child processes too. Not all processes will have
300  * children, but for consistency we make all postmaster child processes do
301  * this.
302  */
303 #ifdef HAVE_SETSID
304  if (setsid() < 0)
305  elog(FATAL, "setsid() failed: %m");
306 #endif
307 
308  /* Request a signal if the postmaster dies, if possible. */
310 }
void InitProcessGlobals(void)
Definition: postmaster.c:2513
void on_exit_reset(void)
Definition: ipc.c:409
static Latch LocalLatchData
Definition: miscinit.c:65
#define FATAL
Definition: elog.h:52
bool IsUnderPostmaster
Definition: globals.c:109
void InitializeLatchSupport(void)
Definition: latch.c:147
void InitLatch(volatile Latch *latch)
Definition: latch.c:220
#define elog(elevel,...)
Definition: elog.h:226
struct Latch * MyLatch
Definition: globals.c:54
void PostmasterDeathSignalInit(void)
Definition: pmsignal.c:370

◆ InitStandaloneProcess()

void InitStandaloneProcess ( const char *  argv0)

Definition at line 318 of file miscinit.c.

References Assert, elog, FATAL, find_my_exec(), get_pkglib_path(), InitializeLatchSupport(), InitLatch(), InitProcessGlobals(), IsPostmasterEnvironment, LocalLatchData, my_exec_path, MyLatch, and pkglib_path.

Referenced by AuxiliaryProcessMain(), and PostgresMain().

319 {
321 
323 
324  /* Initialize process-local latch support */
328 
329  /* Compute paths, no postmaster to inherit from */
330  if (my_exec_path[0] == '\0')
331  {
332  if (find_my_exec(argv0, my_exec_path) < 0)
333  elog(FATAL, "%s: could not locate my own executable path",
334  argv0);
335  }
336 
337  if (pkglib_path[0] == '\0')
339 }
bool IsPostmasterEnvironment
Definition: globals.c:108
static char * argv0
Definition: pg_ctl.c:95
void InitProcessGlobals(void)
Definition: postmaster.c:2513
void get_pkglib_path(const char *my_exec_path, char *ret_path)
Definition: path.c:758
static Latch LocalLatchData
Definition: miscinit.c:65
#define FATAL
Definition: elog.h:52
int find_my_exec(const char *argv0, char *retpath)
Definition: exec.c:129
char my_exec_path[MAXPGPATH]
Definition: globals.c:72
void InitializeLatchSupport(void)
Definition: latch.c:147
#define Assert(condition)
Definition: c.h:732
void InitLatch(volatile Latch *latch)
Definition: latch.c:220
#define elog(elevel,...)
Definition: elog.h:226
struct Latch * MyLatch
Definition: globals.c:54
char pkglib_path[MAXPGPATH]
Definition: globals.c:73

◆ InLocalUserIdChange()

bool InLocalUserIdChange ( void  )

Definition at line 503 of file miscinit.c.

References SECURITY_LOCAL_USERID_CHANGE, and SecurityRestrictionContext.

Referenced by GetUserIdAndContext(), is_admin_of_role(), and set_config_option().

504 {
506 }
static int SecurityRestrictionContext
Definition: miscinit.c:262
#define SECURITY_LOCAL_USERID_CHANGE
Definition: miscadmin.h:299

◆ InNoForceRLSOperation()

bool InNoForceRLSOperation ( void  )

Definition at line 521 of file miscinit.c.

References SECURITY_NOFORCE_RLS, and SecurityRestrictionContext.

Referenced by check_enable_rls().

522 {
524 }
static int SecurityRestrictionContext
Definition: miscinit.c:262
#define SECURITY_NOFORCE_RLS
Definition: miscadmin.h:301

◆ InSecurityRestrictedOperation()

bool InSecurityRestrictedOperation ( void  )

Definition at line 512 of file miscinit.c.

References SECURITY_RESTRICTED_OPERATION, and SecurityRestrictionContext.

Referenced by CheckRestrictedOperation(), DefineRelation(), is_admin_of_role(), set_config_option(), and SetUserIdAndContext().

513 {
515 }
#define SECURITY_RESTRICTED_OPERATION
Definition: miscadmin.h:300
static int SecurityRestrictionContext
Definition: miscinit.c:262

◆ pg_bindtextdomain()

void pg_bindtextdomain ( const char *  domain)

Definition at line 1611 of file miscinit.c.

References get_locale_path(), MAXPGPATH, and my_exec_path.

Referenced by _PG_init().

1612 {
1613 #ifdef ENABLE_NLS
1614  if (my_exec_path[0] != '\0')
1615  {
1616  char locale_path[MAXPGPATH];
1617 
1618  get_locale_path(my_exec_path, locale_path);
1619  bindtextdomain(domain, locale_path);
1620  pg_bind_textdomain_codeset(domain);
1621  }
1622 #endif
1623 }
#define MAXPGPATH
char my_exec_path[MAXPGPATH]
Definition: globals.c:72
void get_locale_path(const char *my_exec_path, char *ret_path)
Definition: path.c:767

◆ pg_split_opts()

void pg_split_opts ( char **  argv,
int *  argcp,
const char *  optstr 
)

Definition at line 465 of file postinit.c.

References appendStringInfoChar(), StringInfoData::data, initStringInfo(), pfree(), pstrdup(), and resetStringInfo().

Referenced by BackendRun(), and process_startup_options().

466 {
467  StringInfoData s;
468 
469  initStringInfo(&s);
470 
471  while (*optstr)
472  {
473  bool last_was_escape = false;
474 
475  resetStringInfo(&s);
476 
477  /* skip over leading space */
478  while (isspace((unsigned char) *optstr))
479  optstr++;
480 
481  if (*optstr == '\0')
482  break;
483 
484  /*
485  * Parse a single option, stopping at the first space, unless it's
486  * escaped.
487  */
488  while (*optstr)
489  {
490  if (isspace((unsigned char) *optstr) && !last_was_escape)
491  break;
492 
493  if (!last_was_escape && *optstr == '\\')
494  last_was_escape = true;
495  else
496  {
497  last_was_escape = false;
498  appendStringInfoChar(&s, *optstr);
499  }
500 
501  optstr++;
502  }
503 
504  /* now store the option in the next argv[] position */
505  argv[(*argcp)++] = pstrdup(s.data);
506  }
507 
508  pfree(s.data);
509 }
char * pstrdup(const char *in)
Definition: mcxt.c:1161
void pfree(void *pointer)
Definition: mcxt.c:1031
void resetStringInfo(StringInfo str)
Definition: stringinfo.c:62
void appendStringInfoChar(StringInfo str, char ch)
Definition: stringinfo.c:175
void initStringInfo(StringInfo str)
Definition: stringinfo.c:46

◆ PostgresSigHupHandler()

void PostgresSigHupHandler ( SIGNAL_ARGS  )

Definition at line 2819 of file postgres.c.

References ConfigReloadPending, MyLatch, and SetLatch().

Referenced by PostgresMain(), and WalSndSignals().

2820 {
2821  int save_errno = errno;
2822 
2823  ConfigReloadPending = true;
2824  SetLatch(MyLatch);
2825 
2826  errno = save_errno;
2827 }
volatile sig_atomic_t ConfigReloadPending
Definition: globals.c:35
void SetLatch(volatile Latch *latch)
Definition: latch.c:414
struct Latch * MyLatch
Definition: globals.c:54

◆ PreventCommandDuringRecovery()

void PreventCommandDuringRecovery ( const char *  cmdname)

Definition at line 276 of file utility.c.

References ereport, errcode(), errmsg(), ERROR, and RecoveryInProgress().

Referenced by LockTableCommand(), pg_notify(), standard_ProcessUtility(), and txid_current().

277 {
278  if (RecoveryInProgress())
279  ereport(ERROR,
280  (errcode(ERRCODE_READ_ONLY_SQL_TRANSACTION),
281  /* translator: %s is name of a SQL command, eg CREATE */
282  errmsg("cannot execute %s during recovery",
283  cmdname)));
284 }
int errcode(int sqlerrcode)
Definition: elog.c:570
bool RecoveryInProgress(void)
Definition: xlog.c:8065
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:141
int errmsg(const char *fmt,...)
Definition: elog.c:784

◆ PreventCommandIfParallelMode()

void PreventCommandIfParallelMode ( const char *  cmdname)

Definition at line 257 of file utility.c.

References ereport, errcode(), errmsg(), ERROR, and IsInParallelMode().

Referenced by _SPI_execute_plan(), check_xact_readonly(), do_setval(), DoCopy(), ExecCheckXactReadOnly(), init_execution_state(), nextval_internal(), and SPI_cursor_open_internal().

258 {
259  if (IsInParallelMode())
260  ereport(ERROR,
261  (errcode(ERRCODE_INVALID_TRANSACTION_STATE),
262  /* translator: %s is name of a SQL command, eg CREATE */
263  errmsg("cannot execute %s during a parallel operation",
264  cmdname)));
265 }
int errcode(int sqlerrcode)
Definition: elog.c:570
bool IsInParallelMode(void)
Definition: xact.c:909
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:141
int errmsg(const char *fmt,...)
Definition: elog.c:784

◆ PreventCommandIfReadOnly()

void PreventCommandIfReadOnly ( const char *  cmdname)

Definition at line 239 of file utility.c.

References ereport, errcode(), errmsg(), ERROR, and XactReadOnly.

Referenced by check_xact_readonly(), do_setval(), DoCopy(), ExecCheckXactReadOnly(), and nextval_internal().

240 {
241  if (XactReadOnly)
242  ereport(ERROR,
243  (errcode(ERRCODE_READ_ONLY_SQL_TRANSACTION),
244  /* translator: %s is name of a SQL command, eg CREATE */
245  errmsg("cannot execute %s in a read-only transaction",
246  cmdname)));
247 }
int errcode(int sqlerrcode)
Definition: elog.c:570
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:141
bool XactReadOnly
Definition: xact.c:77
int errmsg(const char *fmt,...)
Definition: elog.c:784

◆ process_session_preload_libraries()

void process_session_preload_libraries ( void  )

Definition at line 1600 of file miscinit.c.

References load_libraries(), local_preload_libraries_string, and session_preload_libraries_string.

Referenced by PostgresMain().

1601 {
1603  "session_preload_libraries",
1604  false);
1606  "local_preload_libraries",
1607  true);
1608 }
static void load_libraries(const char *libraries, const char *gucname, bool restricted)
Definition: miscinit.c:1535
char * local_preload_libraries_string
Definition: miscinit.c:1523
char * session_preload_libraries_string
Definition: miscinit.c:1521

◆ process_shared_preload_libraries()

void process_shared_preload_libraries ( void  )

Definition at line 1587 of file miscinit.c.

References load_libraries(), process_shared_preload_libraries_in_progress, and shared_preload_libraries_string.

Referenced by BackendRun(), and PostmasterMain().

1588 {
1591  "shared_preload_libraries",
1592  false);
1594 }
bool process_shared_preload_libraries_in_progress
Definition: miscinit.c:1526
char * shared_preload_libraries_string
Definition: miscinit.c:1522
static void load_libraries(const char *libraries, const char *gucname, bool restricted)
Definition: miscinit.c:1535

◆ ProcessInterrupts()

void ProcessInterrupts ( void  )

Definition at line 2959 of file postgres.c.

References Assert, ClientAuthInProgress, ClientConnectionLost, CritSectionCount, DEBUG1, DestNone, DestRemote, DoingCommandRead, ereport, errcode(), errdetail_recovery_conflict(), errhint(), errmsg(), ERROR, FATAL, get_timeout_finish_time(), get_timeout_indicator(), HandleParallelMessages(), IdleInTransactionSessionTimeout, IdleInTransactionSessionTimeoutPending, InterruptHoldoffCount, InterruptPending, IsAutoVacuumWorkerProcess(), IsLogicalLauncher(), IsLogicalWorker(), LOCK_TIMEOUT, LockErrorCleanup(), ParallelMessagePending, pgstat_report_recovery_conflict(), proc_exit(), ProcDiePending, PROCSIG_RECOVERY_CONFLICT_DATABASE, QueryCancelHoldoffCount, QueryCancelPending, RecoveryConflictPending, RecoveryConflictReason, RecoveryConflictRetryable, STATEMENT_TIMEOUT, and whereToSendOutput.

Referenced by die().

2960 {
2961  /* OK to accept any interrupts now? */
2962  if (InterruptHoldoffCount != 0 || CritSectionCount != 0)
2963  return;
2964  InterruptPending = false;
2965 
2966  if (ProcDiePending)
2967  {
2968  ProcDiePending = false;
2969  QueryCancelPending = false; /* ProcDie trumps QueryCancel */
2970  LockErrorCleanup();
2971  /* As in quickdie, don't risk sending to client during auth */
2975  ereport(FATAL,
2976  (errcode(ERRCODE_QUERY_CANCELED),
2977  errmsg("canceling authentication due to timeout")));
2978  else if (IsAutoVacuumWorkerProcess())
2979  ereport(FATAL,
2980  (errcode(ERRCODE_ADMIN_SHUTDOWN),
2981  errmsg("terminating autovacuum process due to administrator command")));
2982  else if (IsLogicalWorker())
2983  ereport(FATAL,
2984  (errcode(ERRCODE_ADMIN_SHUTDOWN),
2985  errmsg("terminating logical replication worker due to administrator command")));
2986  else if (IsLogicalLauncher())
2987  {
2988  ereport(DEBUG1,
2989  (errmsg("logical replication launcher shutting down")));
2990 
2991  /*
2992  * The logical replication launcher can be stopped at any time.
2993  * Use exit status 1 so the background worker is restarted.
2994  */
2995  proc_exit(1);
2996  }
2998  {
3000  ereport(FATAL,
3001  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
3002  errmsg("terminating connection due to conflict with recovery"),
3004  }
3005  else if (RecoveryConflictPending)
3006  {
3007  /* Currently there is only one non-retryable recovery conflict */
3010  ereport(FATAL,
3011  (errcode(ERRCODE_DATABASE_DROPPED),
3012  errmsg("terminating connection due to conflict with recovery"),
3014  }
3015  else
3016  ereport(FATAL,
3017  (errcode(ERRCODE_ADMIN_SHUTDOWN),
3018  errmsg("terminating connection due to administrator command")));
3019  }
3021  {
3022  QueryCancelPending = false; /* lost connection trumps QueryCancel */
3023  LockErrorCleanup();
3024  /* don't send to client, we already know the connection to be dead. */
3026  ereport(FATAL,
3027  (errcode(ERRCODE_CONNECTION_FAILURE),
3028  errmsg("connection to client lost")));
3029  }
3030 
3031  /*
3032  * If a recovery conflict happens while we are waiting for input from the
3033  * client, the client is presumably just sitting idle in a transaction,
3034  * preventing recovery from making progress. Terminate the connection to
3035  * dislodge it.
3036  */
3038  {
3039  QueryCancelPending = false; /* this trumps QueryCancel */
3040  RecoveryConflictPending = false;
3041  LockErrorCleanup();
3043  ereport(FATAL,
3044  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
3045  errmsg("terminating connection due to conflict with recovery"),
3047  errhint("In a moment you should be able to reconnect to the"
3048  " database and repeat your command.")));
3049  }
3050 
3051  /*
3052  * Don't allow query cancel interrupts while reading input from the
3053  * client, because we might lose sync in the FE/BE protocol. (Die
3054  * interrupts are OK, because we won't read any further messages from the
3055  * client in that case.)
3056  */
3058  {
3059  /*
3060  * Re-arm InterruptPending so that we process the cancel request as
3061  * soon as we're done reading the message.
3062  */
3063  InterruptPending = true;
3064  }
3065  else if (QueryCancelPending)
3066  {
3067  bool lock_timeout_occurred;
3068  bool stmt_timeout_occurred;
3069 
3070  QueryCancelPending = false;
3071 
3072  /*
3073  * If LOCK_TIMEOUT and STATEMENT_TIMEOUT indicators are both set, we
3074  * need to clear both, so always fetch both.
3075  */
3076  lock_timeout_occurred = get_timeout_indicator(LOCK_TIMEOUT, true);
3077  stmt_timeout_occurred = get_timeout_indicator(STATEMENT_TIMEOUT, true);
3078 
3079  /*
3080  * If both were set, we want to report whichever timeout completed
3081  * earlier; this ensures consistent behavior if the machine is slow
3082  * enough that the second timeout triggers before we get here. A tie
3083  * is arbitrarily broken in favor of reporting a lock timeout.
3084  */
3085  if (lock_timeout_occurred && stmt_timeout_occurred &&
3087  lock_timeout_occurred = false; /* report stmt timeout */
3088 
3089  if (lock_timeout_occurred)
3090  {
3091  LockErrorCleanup();
3092  ereport(ERROR,
3093  (errcode(ERRCODE_LOCK_NOT_AVAILABLE),
3094  errmsg("canceling statement due to lock timeout")));
3095  }
3096  if (stmt_timeout_occurred)
3097  {
3098  LockErrorCleanup();
3099  ereport(ERROR,
3100  (errcode(ERRCODE_QUERY_CANCELED),
3101  errmsg("canceling statement due to statement timeout")));
3102  }
3104  {
3105  LockErrorCleanup();
3106  ereport(ERROR,
3107  (errcode(ERRCODE_QUERY_CANCELED),
3108  errmsg("canceling autovacuum task")));
3109  }
3111  {
3112  RecoveryConflictPending = false;
3113  LockErrorCleanup();
3115  ereport(ERROR,
3116  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
3117  errmsg("canceling statement due to conflict with recovery"),
3119  }
3120 
3121  /*
3122  * If we are reading a command from the client, just ignore the cancel
3123  * request --- sending an extra error message won't accomplish
3124  * anything. Otherwise, go ahead and throw the error.
3125  */
3126  if (!DoingCommandRead)
3127  {
3128  LockErrorCleanup();
3129  ereport(ERROR,
3130  (errcode(ERRCODE_QUERY_CANCELED),
3131  errmsg("canceling statement due to user request")));
3132  }
3133  }
3134 
3136  {
3137  /* Has the timeout setting changed since last we looked? */
3139  ereport(FATAL,
3140  (errcode(ERRCODE_IDLE_IN_TRANSACTION_SESSION_TIMEOUT),
3141  errmsg("terminating connection due to idle-in-transaction timeout")));
3142  else
3144 
3145  }
3146 
3149 }
volatile uint32 InterruptHoldoffCount
Definition: globals.c:36
TimestampTz get_timeout_finish_time(TimeoutId id)
Definition: timeout.c:667
volatile sig_atomic_t QueryCancelPending
Definition: globals.c:31
#define DEBUG1
Definition: elog.h:25
int errhint(const char *fmt,...)
Definition: elog.c:974
void pgstat_report_recovery_conflict(int reason)
Definition: pgstat.c:1486
volatile uint32 QueryCancelHoldoffCount
Definition: globals.c:37
void proc_exit(int code)
Definition: ipc.c:104
int errcode(int sqlerrcode)
Definition: elog.c:570
bool IsLogicalWorker(void)
Definition: worker.c:1763
volatile bool ParallelMessagePending
Definition: parallel.c:111
bool ClientAuthInProgress
Definition: postmaster.c:352
#define ERROR
Definition: elog.h:43
int IdleInTransactionSessionTimeout
Definition: proc.c:63
#define FATAL
Definition: elog.h:52
void HandleParallelMessages(void)
Definition: parallel.c:980
Definition: dest.h:88
volatile sig_atomic_t ClientConnectionLost
Definition: globals.c:33
volatile uint32 CritSectionCount
Definition: globals.c:38
volatile sig_atomic_t IdleInTransactionSessionTimeoutPending
Definition: globals.c:34
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:3285
#define ereport(elevel, rest)
Definition: elog.h:141
void LockErrorCleanup(void)
Definition: proc.c:695
static ProcSignalReason RecoveryConflictReason
Definition: postgres.c:168
static bool RecoveryConflictPending
Definition: postgres.c:166
static bool RecoveryConflictRetryable
Definition: postgres.c:167
bool get_timeout_indicator(TimeoutId id, bool reset_indicator)
Definition: timeout.c:633
static int errdetail_recovery_conflict(void)
Definition: postgres.c:2374
#define Assert(condition)
Definition: c.h:732
volatile sig_atomic_t ProcDiePending
Definition: globals.c:32
static bool DoingCommandRead
Definition: postgres.c:139
volatile sig_atomic_t InterruptPending
Definition: globals.c:30
int errmsg(const char *fmt,...)
Definition: elog.c:784
bool IsLogicalLauncher(void)
Definition: launcher.c:1103
CommandDest whereToSendOutput
Definition: postgres.c:90

◆ RecheckDataDirLockFile()

bool RecheckDataDirLockFile ( void  )

Definition at line 1386 of file miscinit.c.

References close, DIRECTORY_LOCK_FILE, ereport, errcode_for_file_access(), errmsg(), fd(), LOG, PG_BINARY, pgstat_report_wait_end(), pgstat_report_wait_start(), read, and WAIT_EVENT_LOCK_FILE_RECHECKDATADIR_READ.

Referenced by ServerLoop().

1387 {
1388  int fd;
1389  int len;
1390  long file_pid;
1391  char buffer[BLCKSZ];
1392 
1393  fd = open(DIRECTORY_LOCK_FILE, O_RDWR | PG_BINARY, 0);
1394  if (fd < 0)
1395  {
1396  /*
1397  * There are many foreseeable false-positive error conditions. For
1398  * safety, fail only on enumerated clearly-something-is-wrong
1399  * conditions.
1400  */
1401  switch (errno)
1402  {
1403  case ENOENT:
1404  case ENOTDIR:
1405  /* disaster */
1406  ereport(LOG,
1408  errmsg("could not open file \"%s\": %m",
1410  return false;
1411  default:
1412  /* non-fatal, at least for now */
1413  ereport(LOG,
1415  errmsg("could not open file \"%s\": %m; continuing anyway",
1417  return true;
1418  }
1419  }
1421  len = read(fd, buffer, sizeof(buffer) - 1);
1423  if (len < 0)
1424  {
1425  ereport(LOG,
1427  errmsg("could not read from file \"%s\": %m",
1429  close(fd);
1430  return true; /* treat read failure as nonfatal */
1431  }
1432  buffer[len] = '\0';
1433  close(fd);
1434  file_pid = atol(buffer);
1435  if (file_pid == getpid())
1436  return true; /* all is well */
1437 
1438  /* Trouble: someone's overwritten the lock file */
1439  ereport(LOG,
1440  (errmsg("lock file \"%s\" contains wrong PID: %ld instead of %ld",
1441  DIRECTORY_LOCK_FILE, file_pid, (long) getpid())));
1442  return false;
1443 }
#define DIRECTORY_LOCK_FILE
Definition: miscinit.c:58
#define LOG
Definition: elog.h:26
static int fd(const char *x, int i)
Definition: preproc-init.c:105
#define PG_BINARY
Definition: c.h:1171
int errcode_for_file_access(void)
Definition: elog.c:593
static void pgstat_report_wait_end(void)
Definition: pgstat.h:1262
#define ereport(elevel, rest)
Definition: elog.h:141
static void pgstat_report_wait_start(uint32 wait_event_info)
Definition: pgstat.h:1238
int errmsg(const char *fmt,...)
Definition: elog.c:784
#define close(a)
Definition: win32.h:12
#define read(a, b, c)
Definition: win32.h:13

◆ restore_stack_base()

void restore_stack_base ( pg_stack_base_t  base)

Definition at line 3227 of file postgres.c.

References stack_base_ptr.

3228 {
3229 #if defined(__ia64__) || defined(__ia64)
3230  stack_base_ptr = base.stack_base_ptr;
3231  register_stack_base_ptr = base.register_stack_base_ptr;
3232 #else
3233  stack_base_ptr = base;
3234 #endif
3235 }
char * stack_base_ptr
Definition: postgres.c:119

◆ set_stack_base()

pg_stack_base_t set_stack_base ( void  )

Definition at line 3196 of file postgres.c.

References stack_base_ptr.

Referenced by BackendRun(), and PostmasterMain().

3197 {
3198  char stack_base;
3199  pg_stack_base_t old;
3200 
3201 #if defined(__ia64__) || defined(__ia64)
3202  old.stack_base_ptr = stack_base_ptr;
3203  old.register_stack_base_ptr = register_stack_base_ptr;
3204 #else
3205  old = stack_base_ptr;
3206 #endif
3207 
3208  /* Set up reference point for stack depth checking */
3209  stack_base_ptr = &stack_base;
3210 #if defined(__ia64__) || defined(__ia64)
3211  register_stack_base_ptr = ia64_get_bsp();
3212 #endif
3213 
3214  return old;
3215 }
char * stack_base_ptr
Definition: postgres.c:119
char * pg_stack_base_t
Definition: miscadmin.h:274

◆ SetCurrentRoleId()

void SetCurrentRoleId ( Oid  roleid,
bool  is_superuser 
)

Definition at line 760 of file miscinit.c.

References OidIsValid, PGC_INTERNAL, PGC_S_OVERRIDE, SessionUserId, SessionUserIsSuperuser, SetConfigOption(), SetOuterUserId(), and SetRoleIsActive.

Referenced by assign_role(), and ParallelWorkerMain().

761 {
762  /*
763  * Get correct info if it's SET ROLE NONE
764  *
765  * If SessionUserId hasn't been set yet, just do nothing --- the eventual
766  * SetSessionUserId call will fix everything. This is needed since we
767  * will get called during GUC initialization.
768  */
769  if (!OidIsValid(roleid))
770  {
772  return;
773 
774  roleid = SessionUserId;
776 
777  SetRoleIsActive = false;
778  }
779  else
780  SetRoleIsActive = true;
781 
782  SetOuterUserId(roleid);
783 
784  SetConfigOption("is_superuser",
785  is_superuser ? "on" : "off",
787 }
static Oid SessionUserId
Definition: miscinit.c:254
static void SetOuterUserId(Oid userid)
Definition: miscinit.c:399
#define OidIsValid(objectId)
Definition: c.h:638
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:6951
static bool SetRoleIsActive
Definition: miscinit.c:265
static bool SessionUserIsSuperuser
Definition: miscinit.c:260
static bool is_superuser(Archive *fout)
Definition: pg_dump.c:4036

◆ SetDatabasePath()

void SetDatabasePath ( const char *  path)

Definition at line 86 of file miscinit.c.

References Assert, DatabasePath, MemoryContextStrdup(), and TopMemoryContext.

Referenced by InitPostgres().

87 {
88  /* This should happen only once per process */
91 }
MemoryContext TopMemoryContext
Definition: mcxt.c:44
char * DatabasePath
Definition: globals.c:93
#define Assert(condition)
Definition: c.h:732
char * MemoryContextStrdup(MemoryContext context, const char *string)
Definition: mcxt.c:1148

◆ SetDataDir()

void SetDataDir ( const char *  dir)

Definition at line 192 of file miscinit.c.

References AssertArg, DataDir, free, and make_absolute_path().

Referenced by PostmasterMarkPIDForWorkerNotify(), and SelectConfigFiles().

193 {
194  char *new;
195 
196  AssertArg(dir);
197 
198  /* If presented path is relative, convert to absolute */
199  new = make_absolute_path(dir);
200 
201  if (DataDir)
202  free(DataDir);
203  DataDir = new;
204 }
char * make_absolute_path(const char *path)
Definition: path.c:608
#define AssertArg(condition)
Definition: c.h:734
#define free(a)
Definition: header.h:65
char * DataDir
Definition: globals.c:62

◆ SetSessionAuthorization()

void SetSessionAuthorization ( Oid  userid,
bool  is_superuser 
)

Definition at line 714 of file miscinit.c.

References AssertState, AuthenticatedUserId, AuthenticatedUserIsSuperuser, ereport, errcode(), errmsg(), ERROR, OidIsValid, PGC_INTERNAL, PGC_S_OVERRIDE, SetConfigOption(), and SetSessionUserId().

Referenced by assign_session_authorization().

715 {
716  /* Must have authenticated already, else can't make permission check */
718 
719  if (userid != AuthenticatedUserId &&
721  ereport(ERROR,
722  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
723  errmsg("permission denied to set session authorization")));
724 
726 
727  SetConfigOption("is_superuser",
728  is_superuser ? "on" : "off",
730 }
#define AssertState(condition)
Definition: c.h:735
int errcode(int sqlerrcode)
Definition: elog.c:570
#define OidIsValid(objectId)
Definition: c.h:638
#define ERROR
Definition: elog.h:43
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:6951
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:259
#define ereport(elevel, rest)
Definition: elog.h:141
static bool is_superuser(Archive *fout)
Definition: pg_dump.c:4036
int errmsg(const char *fmt,...)
Definition: elog.c:784
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:422
static Oid AuthenticatedUserId
Definition: miscinit.c:253

◆ SetUserIdAndContext()

void SetUserIdAndContext ( Oid  userid,
bool  sec_def_context 
)

Definition at line 541 of file miscinit.c.

References CurrentUserId, ereport, errcode(), errmsg(), ERROR, InSecurityRestrictedOperation(), SECURITY_LOCAL_USERID_CHANGE, and SecurityRestrictionContext.

542 {
543  /* We throw the same error SET ROLE would. */
545  ereport(ERROR,
546  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
547  errmsg("cannot set parameter \"%s\" within security-restricted operation",
548  "role")));
549  CurrentUserId = userid;
550  if (sec_def_context)
552  else
554 }
int errcode(int sqlerrcode)
Definition: elog.c:570
#define ERROR
Definition: elog.h:43
static int SecurityRestrictionContext
Definition: miscinit.c:262
#define ereport(elevel, rest)
Definition: elog.h:141
#define SECURITY_LOCAL_USERID_CHANGE
Definition: miscadmin.h:299
static Oid CurrentUserId
Definition: miscinit.c:256
bool InSecurityRestrictedOperation(void)
Definition: miscinit.c:512
int errmsg(const char *fmt,...)
Definition: elog.c:784

◆ SetUserIdAndSecContext()

void SetUserIdAndSecContext ( Oid  userid,
int  sec_context 
)

◆ stack_is_too_deep()

bool stack_is_too_deep ( void  )

Definition at line 3263 of file postgres.c.

References max_stack_depth_bytes, and stack_base_ptr.

Referenced by check_stack_depth(), and rstacktoodeep().

3264 {
3265  char stack_top_loc;
3266  long stack_depth;
3267 
3268  /*
3269  * Compute distance from reference point to my local variables
3270  */
3271  stack_depth = (long) (stack_base_ptr - &stack_top_loc);
3272 
3273  /*
3274  * Take abs value, since stacks grow up on some machines, down on others
3275  */
3276  if (stack_depth < 0)
3277  stack_depth = -stack_depth;
3278 
3279  /*
3280  * Trouble?
3281  *
3282  * The test on stack_base_ptr prevents us from erroring out if called
3283  * during process setup or in a non-backend process. Logically it should
3284  * be done first, but putting it here avoids wasting cycles during normal
3285  * cases.
3286  */
3287  if (stack_depth > max_stack_depth_bytes &&
3288  stack_base_ptr != NULL)
3289  return true;
3290 
3291  /*
3292  * On IA64 there is a separate "register" stack that requires its own
3293  * independent check. For this, we have to measure the change in the
3294  * "BSP" pointer from PostgresMain to here. Logic is just as above,
3295  * except that we know IA64's register stack grows up.
3296  *
3297  * Note we assume that the same max_stack_depth applies to both stacks.
3298  */
3299 #if defined(__ia64__) || defined(__ia64)
3300  stack_depth = (long) (ia64_get_bsp() - register_stack_base_ptr);
3301 
3302  if (stack_depth > max_stack_depth_bytes &&
3303  register_stack_base_ptr != NULL)
3304  return true;
3305 #endif /* IA64 */
3306 
3307  return false;
3308 }
static long max_stack_depth_bytes
Definition: postgres.c:111
char * stack_base_ptr
Definition: postgres.c:119

◆ superuser()

bool superuser ( void  )

Definition at line 47 of file superuser.c.

References GetUserId(), and superuser_arg().

Referenced by AddRoleMems(), AlterForeignDataWrapper(), AlterForeignDataWrapperOwner_internal(), AlterForeignServerOwner_internal(), AlterFunction(), AlterObjectNamespace_internal(), AlterObjectOwner_internal(), AlterObjectRename_internal(), AlterOpFamily(), AlterPublicationOwner_internal(), AlterRole(), AlterRoleSet(), AlterSystemSetConfigFile(), AlterTypeOwner(), ATExecChangeOwner(), brin_metapage_info(), brin_page_items(), brin_page_type(), brin_revmap_data(), bt_metap(), bt_page_items(), bt_page_items_bytea(), bt_page_stats(), check_encoding_locale_matches(), check_permissions(), CreateAccessMethod(), CreateCast(), CreateEventTrigger(), CreateForeignDataWrapper(), CreateFunction(), CreateProceduralLanguage(), CreatePublication(), CreateRole(), CreateSubscription(), CreateTableSpace(), dblink_connstr_check(), dblink_security_check(), DefineAggregate(), DefineOpClass(), DefineOpFamily(), DefineTSParser(), DefineTSTemplate(), DefineType(), DelRoleMems(), DropRole(), dummy_object_relabel(), EnableDisableTrigger(), ExecSetVariableStmt(), ExecuteDoStmt(), fmgr_security_definer(), fsm_page_contents(), get_raw_page_internal(), gin_leafpage_items(), gin_metapage_info(), gin_page_opaque_info(), GUCArrayReset(), hash_bitmap_info(), hash_metapage_info(), hash_page_items(), hash_page_stats(), hash_page_type(), have_createdb_privilege(), heap_page_items(), InitPostgres(), main(), page_checksum(), page_header(), pg_import_system_collations(), pg_logdir_ls(), pg_read_file(), pg_relpages(), pg_relpagesbyid(), pg_rotate_logfile(), pg_signal_backend(), pgstat_get_backend_current_activity(), pgstatginindex(), pgstatindex(), pgstatindexbyid(), pgstattuple(), pgstattuple_approx(), pgstattuplebyid(), ProcedureCreate(), regress_putenv(), RemoveAccessMethodById(), RenameRole(), replorigin_check_prerequisites(), requireSuperuser(), sepgsql_restorecon(), set_config_by_name(), SetPGVariable(), standard_ProcessUtility(), tuple_data_split(), validate_option_array_item(), and wait_pid().

48 {
49  return superuser_arg(GetUserId());
50 }
Oid GetUserId(void)
Definition: miscinit.c:380
bool superuser_arg(Oid roleid)
Definition: superuser.c:57

◆ superuser_arg()

bool superuser_arg ( Oid  roleid)

Definition at line 57 of file superuser.c.

References AUTHOID, CacheRegisterSyscacheCallback(), GETSTRUCT, HeapTupleIsValid, IsUnderPostmaster, last_roleid, last_roleid_is_super, ObjectIdGetDatum, OidIsValid, ReleaseSysCache(), roleid_callback_registered, RoleidCallback(), rolsuper, and SearchSysCache1().

Referenced by AddRoleMems(), AlterEventTriggerOwner_internal(), AlterForeignDataWrapperOwner_internal(), AlterPublicationOwner_internal(), AlterSubscriptionOwner_internal(), check_conn_params(), check_object_ownership(), connect_pg_server(), DelRoleMems(), has_bypassrls_privilege(), has_createrole_privilege(), has_privs_of_role(), is_admin_of_role(), is_member_of_role(), LockGXact(), pg_class_aclmask(), pg_class_ownercheck(), pg_collation_ownercheck(), pg_conversion_ownercheck(), pg_database_aclmask(), pg_database_ownercheck(), pg_event_trigger_ownercheck(), pg_extension_ownercheck(), pg_foreign_data_wrapper_aclmask(), pg_foreign_data_wrapper_ownercheck(), pg_foreign_server_aclmask(), pg_foreign_server_ownercheck(), pg_language_aclmask(), pg_language_ownercheck(), pg_largeobject_aclmask_snapshot(), pg_largeobject_ownercheck(), pg_namespace_aclmask(), pg_namespace_ownercheck(), pg_opclass_ownercheck(), pg_oper_ownercheck(), pg_opfamily_ownercheck(), pg_proc_aclmask(), pg_proc_ownercheck(), pg_publication_ownercheck(), pg_signal_backend(), pg_statistics_object_ownercheck(), pg_subscription_ownercheck(), pg_tablespace_aclmask(), pg_tablespace_ownercheck(), pg_ts_config_ownercheck(), pg_ts_dict_ownercheck(), pg_type_aclmask(), pg_type_ownercheck(), select_best_grantor(), and superuser().

58 {
59  bool result;
60  HeapTuple rtup;
61 
62  /* Quick out for cache hit */
63  if (OidIsValid(last_roleid) && last_roleid == roleid)
64  return last_roleid_is_super;
65 
66  /* Special escape path in case you deleted all your users. */
67  if (!IsUnderPostmaster && roleid == BOOTSTRAP_SUPERUSERID)
68  return true;
69 
70  /* OK, look up the information in pg_authid */
71  rtup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
72  if (HeapTupleIsValid(rtup))
73  {
74  result = ((Form_pg_authid) GETSTRUCT(rtup))->rolsuper;
75  ReleaseSysCache(rtup);
76  }
77  else
78  {
79  /* Report "not superuser" for invalid roleids */
80  result = false;
81  }
82 
83  /* If first time through, set up callback for cache flushes */
85  {
88  (Datum) 0);
90  }
91 
92  /* Cache the result for next time */
93  last_roleid = roleid;
94  last_roleid_is_super = result;
95 
96  return result;
97 }
static Oid last_roleid
Definition: superuser.c:36
#define GETSTRUCT(TUP)
Definition: htup_details.h:668
#define OidIsValid(objectId)
Definition: c.h:638
static void RoleidCallback(Datum arg, int cacheid, uint32 hashvalue)
Definition: superuser.c:104
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:55
static bool last_roleid_is_super
Definition: superuser.c:37
#define ObjectIdGetDatum(X)
Definition: postgres.h:492
bool IsUnderPostmaster
Definition: globals.c:109
bool rolsuper
Definition: pg_authid.h:34
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1112
void CacheRegisterSyscacheCallback(int cacheid, SyscacheCallbackFunction func, Datum arg)
Definition: inval.c:1407
uintptr_t Datum
Definition: postgres.h:367
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1160
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
static bool roleid_callback_registered
Definition: superuser.c:38

◆ SwitchBackToLocalLatch()

void SwitchBackToLocalLatch ( void  )

Definition at line 361 of file miscinit.c.

References Assert, FeBeWaitSet, LocalLatchData, ModifyWaitEvent(), MyLatch, MyProc, PGPROC::procLatch, SetLatch(), and WL_LATCH_SET.

Referenced by AuxiliaryProcKill(), and ProcKill().

362 {
364  Assert(MyProc != NULL && MyLatch == &MyProc->procLatch);
365 
367 
368  if (FeBeWaitSet)
370 
371  SetLatch(MyLatch);
372 }
PGPROC * MyProc
Definition: proc.c:67
void ModifyWaitEvent(WaitEventSet *set, int pos, uint32 events, Latch *latch)
Definition: latch.c:736
WaitEventSet * FeBeWaitSet
Definition: pqcomm.c:186
Latch procLatch
Definition: proc.h:104
static Latch LocalLatchData
Definition: miscinit.c:65
void SetLatch(volatile Latch *latch)
Definition: latch.c:414
#define Assert(condition)
Definition: c.h:732
struct Latch * MyLatch
Definition: globals.c:54
#define WL_LATCH_SET
Definition: latch.h:124

◆ SwitchToSharedLatch()

void SwitchToSharedLatch ( void  )

Definition at line 342 of file miscinit.c.

References Assert, FeBeWaitSet, ModifyWaitEvent(), MyLatch, MyProc, PGPROC::procLatch, SetLatch(), and WL_LATCH_SET.

Referenced by InitAuxiliaryProcess(), and InitProcess().

343 {
345  Assert(MyProc != NULL);
346 
348 
349  if (FeBeWaitSet)
351 
352  /*
353  * Set the shared latch as the local one might have been set. This
354  * shouldn't normally be necessary as code is supposed to check the
355  * condition before waiting for the latch, but a bit care can't hurt.
356  */
357  SetLatch(MyLatch);
358 }
PGPROC * MyProc
Definition: proc.c:67
void ModifyWaitEvent(WaitEventSet *set, int pos, uint32 events, Latch *latch)
Definition: latch.c:736
WaitEventSet * FeBeWaitSet
Definition: pqcomm.c:186
Latch procLatch
Definition: proc.h:104
static Latch LocalLatchData
Definition: miscinit.c:65
void SetLatch(volatile Latch *latch)
Definition: latch.c:414
#define Assert(condition)
Definition: c.h:732
struct Latch * MyLatch
Definition: globals.c:54
#define WL_LATCH_SET
Definition: latch.h:124

◆ TouchSocketLockFiles()

void TouchSocketLockFiles ( void  )

Definition at line 1208 of file miscinit.c.

References close, DIRECTORY_LOCK_FILE, fd(), lfirst, PG_BINARY, and read.

Referenced by ServerLoop().

1209 {
1210  ListCell *l;
1211 
1212  foreach(l, lock_files)
1213  {
1214  char *socketLockFile = (char *) lfirst(l);
1215 
1216  /* No need to touch the data directory lock file, we trust */
1217  if (strcmp(socketLockFile, DIRECTORY_LOCK_FILE) == 0)
1218  continue;
1219 
1220  /*
1221  * utime() is POSIX standard, utimes() is a common alternative; if we
1222  * have neither, fall back to actually reading the file (which only
1223  * sets the access time not mod time, but that should be enough in
1224  * most cases). In all paths, we ignore errors.
1225  */
1226 #ifdef HAVE_UTIME
1227  utime(socketLockFile, NULL);
1228 #else /* !HAVE_UTIME */
1229 #ifdef HAVE_UTIMES
1230  utimes(socketLockFile, NULL);
1231 #else /* !HAVE_UTIMES */
1232  int fd;
1233  char buffer[1];
1234 
1235  fd = open(socketLockFile, O_RDONLY | PG_BINARY, 0);
1236  if (fd >= 0)
1237  {
1238  read(fd, buffer, sizeof(buffer));
1239  close(fd);
1240  }
1241 #endif /* HAVE_UTIMES */
1242 #endif /* HAVE_UTIME */
1243  }
1244 }
static List * lock_files
Definition: miscinit.c:63
#define DIRECTORY_LOCK_FILE
Definition: miscinit.c:58
static int fd(const char *x, int i)
Definition: preproc-init.c:105
#define PG_BINARY
Definition: c.h:1171
#define lfirst(lc)
Definition: pg_list.h:106
#define close(a)
Definition: win32.h:12
#define read(a, b, c)
Definition: win32.h:13

◆ trace_recovery()

int trace_recovery ( int  trace_level)

Definition at line 3474 of file elog.c.

References LOG, and trace_recovery_messages.

Referenced by KnownAssignedXidsRemove(), KnownAssignedXidsRemovePreceding(), LogCurrentRunningXacts(), ProcArrayApplyRecoveryInfo(), ProcessCommittedInvalidationMessages(), RecordKnownAssignedTransactionIds(), RecoveryRestartPoint(), StandbyAcquireAccessExclusiveLock(), StandbyReleaseAllLocks(), and StandbyReleaseLockList().

3475 {
3476  if (trace_level < LOG &&
3477  trace_level >= trace_recovery_messages)
3478  return LOG;
3479 
3480  return trace_level;
3481 }
#define LOG
Definition: elog.h:26
int trace_recovery_messages
Definition: guc.c:466

◆ ValidatePgVersion()

void ValidatePgVersion ( const char *  path)

Definition at line 1458 of file miscinit.c.

References AllocateFile(), ereport, errcode(), errcode_for_file_access(), errdetail(), errhint(), errmsg(), FATAL, FreeFile(), MAXPGPATH, and snprintf.

Referenced by checkDataDir(), and InitPostgres().

1459 {
1460  char full_path[MAXPGPATH];
1461  FILE *file;
1462  int ret;
1463  long file_major;
1464  long my_major;
1465  char *endptr;
1466  char file_version_string[64];
1467  const char *my_version_string = PG_VERSION;
1468 
1469  my_major = strtol(my_version_string, &endptr, 10);
1470 
1471  snprintf(full_path, sizeof(full_path), "%s/PG_VERSION", path);
1472 
1473  file = AllocateFile(full_path, "r");
1474  if (!file)
1475  {
1476  if (errno == ENOENT)
1477  ereport(FATAL,
1478  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1479  errmsg("\"%s\" is not a valid data directory",
1480  path),
1481  errdetail("File \"%s\" is missing.", full_path)));
1482  else
1483  ereport(FATAL,
1485  errmsg("could not open file \"%s\": %m", full_path)));
1486  }
1487 
1488  file_version_string[0] = '\0';
1489  ret = fscanf(file, "%63s", file_version_string);
1490  file_major = strtol(file_version_string, &endptr, 10);
1491 
1492  if (ret != 1 || endptr == file_version_string)
1493  ereport(FATAL,
1494  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1495  errmsg("\"%s\" is not a valid data directory",
1496  path),
1497  errdetail("File \"%s\" does not contain valid data.",
1498  full_path),
1499  errhint("You might need to initdb.")));
1500 
1501  FreeFile(file);
1502 
1503  if (my_major != file_major)
1504  ereport(FATAL,
1505  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1506  errmsg("database files are incompatible with server"),
1507  errdetail("The data directory was initialized by PostgreSQL version %s, "
1508  "which is not compatible with this version %s.",
1509  file_version_string, my_version_string)));
1510 }
int errhint(const char *fmt,...)
Definition: elog.c:974
int errcode(int sqlerrcode)
Definition: elog.c:570
#define FATAL
Definition: elog.h:52
#define MAXPGPATH
int errdetail(const char *fmt,...)
Definition: elog.c:860
int errcode_for_file_access(void)
Definition: elog.c:593
FILE * AllocateFile(const char *name, const char *mode)
Definition: fd.c:2177
#define ereport(elevel, rest)
Definition: elog.h:141
int FreeFile(FILE *file)
Definition: fd.c:2369
int errmsg(const char *fmt,...)
Definition: elog.c:784
#define snprintf
Definition: port.h:192

Variable Documentation

◆ allowSystemTableMods

◆ ClientConnectionLost

PGDLLIMPORT volatile sig_atomic_t ClientConnectionLost

Definition at line 33 of file globals.c.

Referenced by internal_flush(), and ProcessInterrupts().

◆ ConfigReloadPending

PGDLLIMPORT volatile sig_atomic_t ConfigReloadPending

◆ CritSectionCount

◆ data_directory_mode

PGDLLIMPORT int data_directory_mode

Definition at line 68 of file globals.c.

Referenced by checkDataDir(), RetrieveDataDirCreatePerm(), and show_data_directory_mode().

◆ DatabasePath

◆ DataDir

◆ DateOrder

PGDLLIMPORT int DateOrder

◆ DateStyle

◆ enableFsync

◆ ExitOnAnyError

PGDLLIMPORT bool ExitOnAnyError

Definition at line 113 of file globals.c.

Referenced by BackgroundWriterMain(), CheckpointerMain(), and errstart().

◆ IdleInTransactionSessionTimeoutPending

PGDLLIMPORT volatile sig_atomic_t IdleInTransactionSessionTimeoutPending

Definition at line 34 of file globals.c.

Referenced by IdleInTransactionSessionTimeoutHandler(), and ProcessInterrupts().

◆ IgnoreSystemIndexes

bool IgnoreSystemIndexes

◆ InterruptHoldoffCount

PGDLLIMPORT volatile uint32 InterruptHoldoffCount

◆ InterruptPending

◆ IntervalStyle

PGDLLIMPORT int IntervalStyle

◆ IsBackgroundWorker

◆ IsBinaryUpgrade

◆ IsPostmasterEnvironment

◆ IsUnderPostmaster

PGDLLIMPORT bool IsUnderPostmaster

Definition at line 109 of file globals.c.

Referenced by _PG_init(), AutoVacuumShmemInit(), AuxiliaryProcessMain(), BackendRandomShmemInit(), BackgroundWorkerShmemInit(), bootstrap_signals(), BootstrapModeMain(), BTreeShmemInit(), CheckMyDatabase(), CheckRecoveryConsistency(), CommitTsShmemInit(), CreateLWLocks(), CreateSharedMemoryAndSemaphores(), DebugFileOpen(), dsm_attach(), dsm_create(), dsm_postmaster_startup(), EventTriggerDDLCommandEnd(), EventTriggerDDLCommandStart(), EventTriggerSQLDrop(), EventTriggerTableRewrite(), ForgetDatabaseFsyncRequests(), ForgetRelationFsyncRequests(), ForwardFsyncRequest(), GetNewMultiXactId(), GetNewTransactionId(), HandleStartupProcInterrupts(), heap_create_with_catalog(), init_ps_display(), InitCommunication(), InitializeLatchSupport(), InitializeSessionUserId(), InitializeSessionUserIdStandalone(), InitPostgres(), InitPostmasterChild(), InitPredicateLocks(), InitProcess(), LWLockAcquire(), mdinit(), MultiXactShmemInit(), OldSerXidInit(), pg_backend_random(), PGSemaphoreCreate(), PGSharedMemoryCreate(), PGSharedMemoryNoReAttach(), PGSharedMemoryReAttach(), pgss_shmem_startup(), PostgresMain(), process_postgres_switches(), process_settings(), ProcKill(), readRecoveryCommandFile(), register_unlink(), RegisterBackgroundWorker(), RegisterDynamicBackgroundWorker(), ReplicationSlotAcquire(), RequestAddinShmemSpace(), RequestNamedLWLockTranche(), SendPostmasterSignal(), set_config_option(), set_config_sourcefile(), set_ps_display(), SetMultiXactIdLimit(), SetTransactionIdLimit(), ShmemInitStruct(), SimpleLruInit(), standard_planner(), StartupXLOG(), superuser_arg(), SyncScanShmemInit(), TwoPhaseShmemInit(), verify_dictoptions(), WaitLatchOrSocket(), XLogArchiveNotify(), and XLogWrite().

◆ local_preload_libraries_string

char* local_preload_libraries_string

Definition at line 1523 of file miscinit.c.

Referenced by process_session_preload_libraries().

◆ maintenance_work_mem

◆ max_parallel_maintenance_workers

PGDLLIMPORT int max_parallel_maintenance_workers

Definition at line 123 of file globals.c.

Referenced by plan_create_index_workers().

◆ max_parallel_workers

PGDLLIMPORT int max_parallel_workers

Definition at line 134 of file globals.c.

Referenced by RegisterDynamicBackgroundWorker().

◆ max_worker_processes

◆ MaxBackends

◆ MaxConnections

◆ Mode

Definition at line 60 of file miscinit.c.

◆ my_exec_path

◆ MyAuxProcType

AuxProcType MyAuxProcType

Definition at line 70 of file bootstrap.c.

Referenced by AuxiliaryProcessMain(), pgstat_bestart(), and pgstat_initialize().

◆ MyCancelKey

◆ MyDatabaseId

PGDLLIMPORT Oid MyDatabaseId

Definition at line 85 of file globals.c.

Referenced by AfterTriggerSetState(), AlterDatabase(), AlterObjectRename_internal(), AlterPublicationOwner_internal(), AlterSchemaOwner_internal(), AlterSubscription(), AlterSubscriptionOwner(), asyncQueueNotificationToEntry(), asyncQueueProcessPageEntries(), AutoVacuumRequestWork(), backend_read_statsfile(), CacheInvalidateCatalog(), CacheInvalidateHeapTuple(), CacheInvalidateRelcache(), CacheInvalidateRelcacheByTuple(), CheckLogicalDecodingRequirements(), CheckMyDatabase(), checkSharedDependencies(), classIdGetDbId(), CreateDecodingContext(), CreateInitDecodingContext(), CreateProceduralLanguage(), CreatePublication(), CreateSchemaCommand(), CreateSubscription(), current_database(), database_to_xml_internal(), DeconstructQualifiedName(), do_analyze_rel(), do_autovacuum(), dropdb(), DropSubscription(), Exec_ListenPreCommit(), exec_object_restorecon(), exec_replication_command(), ExecuteTruncateGuts(), ExpandColumnRefStar(), ExportSnapshot(), get_subscription_oid(), GetCurrentVirtualXIDs(), GetNewRelFileNode(), GetOldestXmin(), IdentifySystem(), ImportSnapshot(), InitializeParallelDSM(), InitPostgres(), InitTempTableNamespace(), isTempNamespaceInUse(), lazy_vacuum_rel(), libpqrcv_exec(), LocalExecuteInvalidationMessage(), LockDatabaseObject(), LockGXact(), logical_heap_rewrite_flush_mappings(), logical_rewrite_log_mapping(), LogLogicalMessage(), LogStandbyInvalidations(), map_sql_catalog_to_xmlschema_types(), map_sql_schema_to_xmlschema_types(), map_sql_table_to_xmlschema(), map_sql_type_to_xml_name(), movedb(), perform_relmap_update(), perform_work_item(), pg_namespace_aclmask(), pg_relation_filepath(), pgss_store(), pgstat_beshutdown_hook(), pgstat_bestart(), pgstat_drop_database(), pgstat_fetch_stat_funcentry(), pgstat_fetch_stat_tabentry(), pgstat_report_analyze(), pgstat_report_deadlock(), pgstat_report_recovery_conflict(), pgstat_report_stat(), pgstat_report_tempfile(), pgstat_report_vacuum(), pgstat_reset_counters(), pgstat_reset_single_counter(), pgstat_send_funcstats(), pgstat_vacuum_stat(), PrepareToInvalidateCacheTuple(), PrepareTransaction(), ProcArrayInstallImportedXmin(), ProcArrayInstallRestoredXmin(), RangeVarGetAndCheckCreationNamespace(), RangeVarGetCreationNamespace(), RangeVarGetRelidExtended(), ReindexMultipleTables(), RelationInitLockInfo(), RelationInitPhysicalAddr(), RelationMapFinishBootstrap(), RenameDatabase(), RenameSchema(), ReplicationSlotCreate(), ScanPgRelation(), sepgsql_schema_post_create(), SetLocktagRelationOid(), shdepDropOwned(), shdepReassignOwned(), table_recheck_autovac(), transformColumnRef(), UnlockDatabaseObject(), UpdateLogicalMappings(), vac_truncate_clog(), vac_update_datfrozenxid(), vacuum_is_relation_owner(), XactLogAbortRecord(), and XactLogCommitRecord().

◆ MyDatabaseTableSpace

◆ MyLatch

PGDLLIMPORT struct Latch* MyLatch

Definition at line 54 of file globals.c.

Referenced by ApplyLauncherMain(), ArchSigHupHandler(), ArchSigTermHandler(), AutoVacLauncherMain(), av_sighup_handler(), avl_sigterm_handler(), avl_sigusr2_handler(), BackgroundWriterMain(), be_tls_open_server(), BgSigHupHandler(), CheckDeadLockAlert(), CheckpointerMain(), ChkptSigHupHandler(), ConditionVariablePrepareToSleep(), ConditionVariableSleep(), copy_read_data(), die(), gather_readnext(), handle_sig_alarm(), handle_sigterm(), HandleCatchupInterrupt(), HandleNotifyInterrupt(), HandleParallelMessageInterrupt(), IdleInTransactionSessionTimeoutHandler(), initialize_worker_spi(), InitPostmasterChild(), InitStandaloneProcess(), libpqrcv_connect(), libpqrcv_PQexec(), logicalrep_launcher_sighup(), logicalrep_worker_sighup(), logicalrep_worker_stop(), LogicalRepApplyLoop(), mq_putmessage(), pg_promote(), pg_sleep(), pgarch_MainLoop(), pgarch_waken(), pgarch_waken_stop(), pgfdw_get_cleanup_result(), pgfdw_get_result(), pgstat_exit(), pgstat_sighup_handler(), PgstatCollectorMain(), PostgresSigHupHandler(), pq_init(), ProcessClientReadInterrupt(), ProcessClientWriteInterrupt(), procsignal_sigusr1_handler(), ProcSleep(), ProcWaitForSignal(), RecoveryConflictInterrupt(), ReqCheckpointHandler(), ReqShutdownHandler(), secure_read(), secure_write(), shm_mq_receive_bytes(), shm_mq_send_bytes(), shm_mq_wait_internal(), sigHupHandler(), sigUsr1Handler(), StatementCancelHandler(), SwitchBackToLocalLatch(), SwitchToSharedLatch(), SyncRepWaitForLSN(), SysLoggerMain(), test_shm_mq_pipelined(), throttle(), wait_for_relation_state_change(), wait_for_worker_state_change(), wait_for_workers_to_become_ready(), WaitForBackgroundWorkerShutdown(), WaitForBackgroundWorkerStartup(), WaitForParallelWorkersToAttach(), WaitForParallelWorkersToFinish(), WaitForReplicationWorkerAttach(), WalShutdownHandler(), WalSigHupHandler(), WalSndLastCycleHandler(), WalSndLoop(), WalSndWaitForWal(), WalSndWriteData(), WalWriterMain(), worker_spi_sighup(), worker_spi_sigterm(), and write_syslogger_file().

◆ MyPMChildSlot

◆ MyProcPid

PGDLLIMPORT int MyProcPid

Definition at line 40 of file globals.c.

Referenced by AddWaitEventToSet(), ApplyLauncherMain(), apw_detach_shmem(), apw_dump_now(), apw_load_buffers(), apw_start_database_worker(), apw_start_master_worker(), Async_Listen(), Async_Unlisten(), Async_UnlistenAll(), asyncQueueNotificationToEntry(), asyncQueueReadAllNotifications(), asyncQueueUnregister(), autoprewarm_main(), AutoVacLauncherMain(), BackendRun(), CheckpointerMain(), CleanupProcSignalState(), DisownLatch(), Exec_ListenPreCommit(), Exec_UnlistenAllCommit(), Exec_UnlistenCommit(), ExportSnapshot(), GetSerializableTransactionSnapshotInt(), HandleWalSndInitStopping(), InitAuxiliaryProcess(), InitializeLatchSupport(), InitializeParallelDSM(), InitLatch(), InitPostmasterDeathWatchHandle(), InitProcess(), InitProcessGlobals(), InitWalSenderSlot(), IsLogicalLauncher(), LaunchParallelWorkers(), llvm_compile_module(), LockBufferForCleanup(), LockTimeoutHandler(), log_line_prefix(), logicalrep_worker_launch(), OpenTemporaryFileInTablespace(), OwnLatch(), ParallelWorkerMain(), pg_backend_pid(), pgstat_bestart(), PostgresMain(), PostmasterMain(), ProcSignalInit(), ProcSleep(), PublishStartupProcessInformation(), ReplicationOriginExitCleanup(), ReplicationSlotAcquire(), ReplicationSlotCleanup(), ReplicationSlotCreate(), ReplicationSlotsDropDBSlots(), replorigin_session_setup(), ResetLatch(), ServerLoop(), set_ps_display(), SetLatch(), setup_background_workers(), SharedFileSetInit(), SharedInvalBackendInit(), SignalBackends(), SnapBuildSerialize(), StatementTimeoutHandler(), UnlockBuffers(), WalRcvDie(), WalReceiverMain(), worker_spi_launch(), write_csvlog(), write_pipe_chunks(), and write_relcache_init_file().

◆ MyProcPort

◆ MyStartTime

◆ MyStartTimestamp

PGDLLIMPORT TimestampTz MyStartTimestamp

Definition at line 42 of file globals.c.

Referenced by InitProcessGlobals(), log_disconnections(), and pgstat_bestart().

◆ NBuffers

PGDLLIMPORT int NBuffers

Definition at line 131 of file globals.c.

◆ OutputFileName

char OutputFileName[]

Definition at line 70 of file globals.c.

Referenced by AuxiliaryProcessMain(), DebugFileOpen(), and process_postgres_switches().

◆ pkglib_path

◆ PostmasterPid

◆ ProcDiePending

◆ process_shared_preload_libraries_in_progress

PGDLLIMPORT bool process_shared_preload_libraries_in_progress

◆ QueryCancelHoldoffCount

PGDLLIMPORT volatile uint32 QueryCancelHoldoffCount

Definition at line 37 of file globals.c.

Referenced by errfinish(), and ProcessInterrupts().

◆ QueryCancelPending

◆ session_preload_libraries_string

char* session_preload_libraries_string

Definition at line 1521 of file miscinit.c.

Referenced by process_session_preload_libraries().

◆ shared_preload_libraries_string

char* shared_preload_libraries_string

Definition at line 1522 of file miscinit.c.

Referenced by process_shared_preload_libraries().

◆ trace_recovery_messages

int trace_recovery_messages

Definition at line 466 of file guc.c.

Referenced by StartupXLOG(), and trace_recovery().

◆ vacuum_cleanup_index_scale_factor

double vacuum_cleanup_index_scale_factor

Definition at line 150 of file globals.c.

Referenced by _bt_vacuum_needs_cleanup(), and default_reloptions().

◆ VacuumCostActive

bool VacuumCostActive

◆ VacuumCostBalance

int VacuumCostBalance

◆ VacuumCostDelay

◆ VacuumCostLimit

int VacuumCostLimit

◆ VacuumCostPageDirty

int VacuumCostPageDirty

Definition at line 139 of file globals.c.

Referenced by MarkBufferDirty(), and MarkBufferDirtyHint().

◆ VacuumCostPageHit

int VacuumCostPageHit

Definition at line 137 of file globals.c.

Referenced by ReadBuffer_common().

◆ VacuumCostPageMiss

int VacuumCostPageMiss

Definition at line 138 of file globals.c.

Referenced by ReadBuffer_common().

◆ VacuumPageDirty

int VacuumPageDirty

Definition at line 145 of file globals.c.

Referenced by lazy_vacuum_rel(), MarkBufferDirty(), MarkBufferDirtyHint(), and vacuum().

◆ VacuumPageHit

int VacuumPageHit

Definition at line 143 of file globals.c.

Referenced by lazy_vacuum_rel(), ReadBuffer_common(), and vacuum().

◆ VacuumPageMiss

int VacuumPageMiss

Definition at line 144 of file globals.c.

Referenced by lazy_vacuum_rel(), ReadBuffer_common(), and vacuum().

◆ work_mem

PGDLLIMPORT int work_mem

Definition at line 121 of file globals.c.

Referenced by _bt_parallel_scan_and_sort(), _bt_spools_heapscan(), add_paths_to_grouping_rel(), begin_partition(), brin_page_items(), bt_check_every_level(), BuildTupleHashTable(), choose_hashed_setop(), collectMatchBitmap(), compute_bitmap_pages(), connectby(), consider_groupingsets_paths(), cost_material(), cost_rescan(), create_distinct_paths(), create_gather_merge_path(), create_groupingsets_path(), create_merge_append_path(), create_partial_grouping_paths(), create_sort_path(), create_unique_path(), crosstab(), dblink_get_notify(), deflist_to_tuplestore(), each_worker(), each_worker_jsonb(), elements_worker(), elements_worker_jsonb(), exec_init_tuple_store(), ExecChooseHashTableSize(), ExecInitCteScan(), ExecInitRecursiveUnion(), ExecMakeTableFunctionResult(), ExecMaterial(), ExecParallelHashIncreaseNumBatches(), ExecRecursiveUnion(), ExecSort(), final_cost_hashjoin(), final_cost_mergejoin(), fmgr_sql(), get_crosstab_tuplestore(), GetCurrentFDWTuplestore(), ginInsertCleanup(), initial_cost_mergejoin(), initialize_aggregate(), initialize_phase(), label_sort_with_costsize(), libpqrcv_processTuples(), MakeTransitionCaptureState(), materializeQueryResult(), materializeResult(), MultiExecBitmapIndexScan(), MultiExecBitmapOr(), ordered_set_startup(), pg_available_extension_versions(), pg_available_extensions(), pg_config(), pg_cursor(), pg_event_trigger_ddl_commands(), pg_event_trigger_dropped_objects(), pg_extension_update_paths(), pg_get_replication_slots(), pg_hba_file_rules(), pg_logical_slot_get_changes_guts(), pg_prepared_statement(), pg_show_replication_origin_status(), pg_stat_get_activity(), pg_stat_get_progress_info(), pg_stat_get_subscription(), pg_stat_get_wal_senders(), pg_stat_statements_internal(), pg_stop_backup_v2(), plperl_return_next_internal(), pltcl_init_tuple_store(), populate_recordset_worker(), PortalCreateHoldStore(), show_all_file_settings(), storeRow(), subplan_is_hashable(), tfuncFetchRows(), and xpath_table().