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 BackendType BackendType
 
typedef enum ProcessingMode ProcessingMode
 

Enumerations

enum  BackendType {
  B_INVALID = 0, B_AUTOVAC_LAUNCHER, B_AUTOVAC_WORKER, B_BACKEND,
  B_BG_WORKER, B_BG_WRITER, B_CHECKPOINTER, B_STARTUP,
  B_WAL_RECEIVER, B_WAL_SENDER, B_WAL_WRITER, B_ARCHIVER,
  B_STATS_COLLECTOR, B_LOGGER
}
 
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 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 SwitchToSharedLatch (void)
 
void SwitchBackToLocalLatch (void)
 
const char * GetBackendTypeDesc (BackendType backendType)
 
void SetDatabasePath (const char *path)
 
void checkDataDir (void)
 
void SetDataDir (const char *dir)
 
void ChangeToDataDir (void)
 
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)
 
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)
 
int get_hash_mem (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 IdleSessionTimeoutPending
 
PGDLLIMPORT volatile sig_atomic_t ProcSignalBarrierPending
 
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 double hash_mem_multiplier
 
PGDLLIMPORT int maintenance_work_mem
 
PGDLLIMPORT int max_parallel_maintenance_workers
 
int VacuumCostPageHit
 
int VacuumCostPageMiss
 
int VacuumCostPageDirty
 
int VacuumCostLimit
 
double VacuumCostDelay
 
int64 VacuumPageHit
 
int64 VacuumPageMiss
 
int64 VacuumPageDirty
 
int VacuumCostBalance
 
bool VacuumCostActive
 
double vacuum_cleanup_index_scale_factor
 
int trace_recovery_messages
 
char * DatabasePath
 
BackendType MyBackendType
 
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 433 of file miscadmin.h.

Referenced by ForwardSyncRequest().

◆ AmBootstrapProcess

#define AmBootstrapProcess ( )    (MyAuxProcType == BootstrapProcess)

Definition at line 431 of file miscadmin.h.

◆ AmCheckpointerProcess

#define AmCheckpointerProcess ( )    (MyAuxProcType == CheckpointerProcess)

◆ AmStartupProcess

◆ AmWalReceiverProcess

#define AmWalReceiverProcess ( )    (MyAuxProcType == WalReceiverProcess)

Definition at line 436 of file miscadmin.h.

Referenced by get_sync_bit().

◆ AmWalWriterProcess

#define AmWalWriterProcess ( )    (MyAuxProcType == WalWriterProcess)

Definition at line 435 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
#define unlikely(x)
Definition: c.h:261

Definition at line 100 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_refill_hash_table(), agg_retrieve_hash_table_in_memory(), analyze_rel(), apply_handle_stream_commit(), 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(), BufFileDeleteShared(), BufFileOpenShared(), calculate_database_size(), calculate_relation_size(), calculate_tablespace_size(), check_default_partition_contents(), checkCond(), CheckSCRAMAuth(), ClientAuthentication(), cluster_rel(), collect_corrupt_items(), collect_visibility_data(), ConditionVariableTimedSleep(), copy_file(), copy_messages(), copy_read_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_stmts(), exec_toplevel_block(), ExecAgg(), ExecAppend(), ExecCustomScan(), ExecFindPartition(), ExecGather(), ExecGatherMerge(), ExecGroup(), ExecHashIncreaseNumBatches(), ExecHashIncreaseNumBuckets(), ExecHashJoinGetSavedTuple(), ExecHashJoinImpl(), ExecHashRemoveNextSkewBucket(), ExecIncrementalSort(), ExecLimit(), ExecLockRows(), ExecMakeTableFunctionResult(), ExecMaterial(), ExecMergeAppend(), ExecMergeJoin(), ExecModifyTable(), ExecNestLoop(), ExecParallelHashIncreaseNumBuckets(), ExecParallelHashJoinPartitionOuter(), ExecParallelHashRepartitionFirst(), ExecParallelHashRepartitionRest(), ExecProjectSet(), ExecRecursiveUnion(), ExecResult(), ExecScanFetch(), ExecScanHashTableForUnmatched(), ExecSetOp(), ExecSort(), ExecSubPlan(), ExecUnique(), executeItemOptUnwrapTarget(), ExecWindowAgg(), fetch_input_tuple(), findPartialMatch(), flattenJsonPathParseItem(), fsm_vacuum_page(), gather_getnext(), gather_merge_init(), gather_readnext(), gcd_var(), get_query_def(), get_rule_expr(), get_setop_query(), GetMultiXactIdMembers(), GetNewOidWithIndex(), GetNewRelFileNode(), getNextNearest(), ginbuild(), ginBuildCallback(), gingetbitmap(), gist_indexsortbuild_pagestate_flush(), gistgetbitmap(), gistgettuple(), gistProcessItup(), gm_readnext_tuple(), HandleFunctionRequest(), heap_force_common(), heap_lock_updated_tuple_rec(), heap_multi_insert(), heapam_index_build_range_scan(), heapam_index_validate_scan(), heapam_relation_copy_for_cluster(), heapam_scan_sample_next_tuple(), heapgetpage(), hypothetical_dense_rank_final(), hypothetical_rank_common(), ident_inet(), IndexCheckExclusion(), IndexNext(), IndexNextWithReorder(), IndexOnlyNext(), initialize_worker_spi(), interactive_getc(), InvalidateObsoleteReplicationSlots(), lazy_truncate_heap(), log_newpage_range(), 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(), printJsonPathItem(), 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(), ReindexRelationConcurrently(), RelationCopyStorage(), repeat(), 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(), split_text(), statapprox_heap(), storeQueryResult(), summarize_range(), test_re_compile(), test_re_execute(), test_shm_mq_pipelined(), tfuncLoadRows(), throttle(), TidNext(), toast_save_datum(), TS_execute_recurse(), tuplesort_heap_insert(), tuplesort_heap_replace_top(), tuplesort_skiptuples(), tuplestore_skiptuples(), vacuum_delay_point(), vacuum_rel(), validateForeignKeyConstraint(), wait_for_relation_state_change(), wait_for_worker_state_change(), wait_for_workers_to_become_ready(), wait_pid(), WaitExceedsMaxStandbyDelay(), WaitForBackgroundWorkerShutdown(), WaitForBackgroundWorkerStartup(), WaitForParallelWorkersToAttach(), WaitForParallelWorkersToFinish(), WaitForProcSignalBarrier(), WaitForReplicationWorkerAttach(), walkdir(), WalSndLoop(), WalSndWaitForWal(), WalSndWriteData(), and window_gettupleslot().

◆ DATEORDER_DMY

#define DATEORDER_DMY   1

◆ DATEORDER_MDY

#define DATEORDER_MDY   2

Definition at line 223 of file miscadmin.h.

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

◆ DATEORDER_YMD

#define DATEORDER_YMD   0

Definition at line 221 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:39

Definition at line 135 of file miscadmin.h.

Referenced by _bt_dedup_pass(), _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(), AbsorbSyncRequests(), addLeafTuple(), brin_doinsert(), brin_doupdate(), brin_initialize_empty_new_buffer(), brinbuildempty(), brinRevmapDesummarizeRange(), CreateCheckPoint(), CreateEndOfRecoveryRecord(), createPostingTree(), CreateSlotOnDisk(), do_setval(), doPickSplit(), EndPrepare(), fill_seq_with_data(), FreeSpaceMapPrepareTruncateRel(), GenericXLogFinish(), ginbuild(), ginbuildempty(), ginbulkdelete(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), ginVacuumPostingTreeLeaf(), gistbuild(), gistbuildempty(), gistdeletepage(), gistplacetopage(), gistprunepage(), gistvacuumpage(), hashbucketcleanup(), hashbulkdelete(), heap_abort_speculative(), heap_delete(), heap_finish_speculative(), heap_force_common(), 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(), log_newpage_range(), 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_prepare_truncate(), visibilitymap_set(), write_relmap_file(), writeListPage(), XLogBackgroundFlush(), XLogFlush(), and XLogInsertRecord().

◆ GetProcessingMode

#define GetProcessingMode ( )    Mode

Definition at line 398 of file miscadmin.h.

◆ HOLD_CANCEL_INTERRUPTS

#define HOLD_CANCEL_INTERRUPTS ( )    (QueryCancelHoldoffCount++)

Definition at line 125 of file miscadmin.h.

Referenced by CopyGetData(), and SocketBackend().

◆ HOLD_INTERRUPTS

◆ INTSTYLE_ISO_8601

#define INTSTYLE_ISO_8601   3

Definition at line 238 of file miscadmin.h.

Referenced by EncodeInterval().

◆ INTSTYLE_POSTGRES

#define INTSTYLE_POSTGRES   0

Definition at line 235 of file miscadmin.h.

Referenced by EncodeInterval(), and set_transmission_modes().

◆ INTSTYLE_POSTGRES_VERBOSE

#define INTSTYLE_POSTGRES_VERBOSE   1

Definition at line 236 of file miscadmin.h.

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

◆ INTSTYLE_SQL_STANDARD

#define INTSTYLE_SQL_STANDARD   2

Definition at line 237 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 242 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:38

Definition at line 127 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 133 of file miscadmin.h.

Referenced by _bt_dedup_pass(), _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(), AbsorbSyncRequests(), addLeafTuple(), brin_doinsert(), brin_doupdate(), brin_initialize_empty_new_buffer(), brinbuildempty(), brinRevmapDesummarizeRange(), CreateCheckPoint(), CreateEndOfRecoveryRecord(), createPostingTree(), CreateSlotOnDisk(), do_setval(), doPickSplit(), EndPrepare(), fill_seq_with_data(), FreeSpaceMapPrepareTruncateRel(), GenericXLogFinish(), GetNewMultiXactId(), ginbuild(), ginbuildempty(), ginbulkdelete(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), ginVacuumPostingTreeLeaf(), gistbuild(), gistbuildempty(), gistdeletepage(), gistplacetopage(), gistprunepage(), gistvacuumpage(), hashbucketcleanup(), hashbulkdelete(), heap_abort_speculative(), heap_delete(), heap_finish_speculative(), heap_force_common(), 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(), log_newpage_range(), 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_prepare_truncate(), visibilitymap_set(), write_relmap_file(), writeListPage(), XLogBackgroundFlush(), XLogFlush(), and XLogInsertRecord().

◆ USE_GERMAN_DATES

#define USE_GERMAN_DATES   3

Definition at line 217 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 214 of file miscadmin.h.

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

◆ USE_SQL_DATES

#define USE_SQL_DATES   2

Definition at line 216 of file miscadmin.h.

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

◆ USE_XSD_DATES

#define USE_XSD_DATES   4

Typedef Documentation

◆ BackendType

typedef enum BackendType BackendType

◆ pg_stack_base_t

typedef char* pg_stack_base_t

Definition at line 276 of file miscadmin.h.

◆ ProcessingMode

Enumeration Type Documentation

◆ AuxProcType

Enumerator
NotAnAuxProcess 
CheckerProcess 
BootstrapProcess 
StartupProcess 
BgWriterProcess 
CheckpointerProcess 
WalWriterProcess 
WalReceiverProcess 
NUM_AUXPROCTYPES 

Definition at line 415 of file miscadmin.h.

◆ BackendType

Enumerator
B_INVALID 
B_AUTOVAC_LAUNCHER 
B_AUTOVAC_WORKER 
B_BACKEND 
B_BG_WORKER 
B_BG_WRITER 
B_CHECKPOINTER 
B_STARTUP 
B_WAL_RECEIVER 
B_WAL_SENDER 
B_WAL_WRITER 
B_ARCHIVER 
B_STATS_COLLECTOR 
B_LOGGER 

Definition at line 311 of file miscadmin.h.

◆ ProcessingMode

Enumerator
BootstrapProcessing 
InitProcessing 
NormalProcessing 

Definition at line 385 of file miscadmin.h.

386 {
387  BootstrapProcessing, /* bootstrap creation of template database */
388  InitProcessing, /* initializing system */
389  NormalProcessing /* normal processing */
ProcessingMode
Definition: miscadmin.h:385

Function Documentation

◆ AddToDataDirLockFile()

void AddToDataDirLockFile ( int  target_line,
const char *  str 
)

Definition at line 1329 of file miscinit.c.

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

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

1330 {
1331  int fd;
1332  int len;
1333  int lineno;
1334  char *srcptr;
1335  char *destptr;
1336  char srcbuffer[BLCKSZ];
1337  char destbuffer[BLCKSZ];
1338 
1339  fd = open(DIRECTORY_LOCK_FILE, O_RDWR | PG_BINARY, 0);
1340  if (fd < 0)
1341  {
1342  ereport(LOG,
1344  errmsg("could not open file \"%s\": %m",
1346  return;
1347  }
1349  len = read(fd, srcbuffer, sizeof(srcbuffer) - 1);
1351  if (len < 0)
1352  {
1353  ereport(LOG,
1355  errmsg("could not read from file \"%s\": %m",
1357  close(fd);
1358  return;
1359  }
1360  srcbuffer[len] = '\0';
1361 
1362  /*
1363  * Advance over lines we are not supposed to rewrite, then copy them to
1364  * destbuffer.
1365  */
1366  srcptr = srcbuffer;
1367  for (lineno = 1; lineno < target_line; lineno++)
1368  {
1369  char *eol = strchr(srcptr, '\n');
1370 
1371  if (eol == NULL)
1372  break; /* not enough lines in file yet */
1373  srcptr = eol + 1;
1374  }
1375  memcpy(destbuffer, srcbuffer, srcptr - srcbuffer);
1376  destptr = destbuffer + (srcptr - srcbuffer);
1377 
1378  /*
1379  * Fill in any missing lines before the target line, in case lines are
1380  * added to the file out of order.
1381  */
1382  for (; lineno < target_line; lineno++)
1383  {
1384  if (destptr < destbuffer + sizeof(destbuffer))
1385  *destptr++ = '\n';
1386  }
1387 
1388  /*
1389  * Write or rewrite the target line.
1390  */
1391  snprintf(destptr, destbuffer + sizeof(destbuffer) - destptr, "%s\n", str);
1392  destptr += strlen(destptr);
1393 
1394  /*
1395  * If there are more lines in the old file, append them to destbuffer.
1396  */
1397  if ((srcptr = strchr(srcptr, '\n')) != NULL)
1398  {
1399  srcptr++;
1400  snprintf(destptr, destbuffer + sizeof(destbuffer) - destptr, "%s",
1401  srcptr);
1402  }
1403 
1404  /*
1405  * And rewrite the data. Since we write in a single kernel call, this
1406  * update should appear atomic to onlookers.
1407  */
1408  len = strlen(destbuffer);
1409  errno = 0;
1411  if (pg_pwrite(fd, destbuffer, len, 0) != len)
1412  {
1414  /* if write didn't set errno, assume problem is no disk space */
1415  if (errno == 0)
1416  errno = ENOSPC;
1417  ereport(LOG,
1419  errmsg("could not write to file \"%s\": %m",
1421  close(fd);
1422  return;
1423  }
1426  if (pg_fsync(fd) != 0)
1427  {
1428  ereport(LOG,
1430  errmsg("could not write to file \"%s\": %m",
1432  }
1434  if (close(fd) != 0)
1435  {
1436  ereport(LOG,
1438  errmsg("could not write to file \"%s\": %m",
1440  }
1441 }
#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:1259
ssize_t pg_pwrite(int fd, const void *buf, size_t nbyte, off_t offset)
Definition: pwrite.c:27
int errcode_for_file_access(void)
Definition: elog.c:727
static void pgstat_report_wait_end(void)
Definition: pgstat.h:1512
#define ereport(elevel,...)
Definition: elog.h:155
static void pgstat_report_wait_start(uint32 wait_event_info)
Definition: pgstat.h:1488
int errmsg(const char *fmt,...)
Definition: elog.c:915
int pg_fsync(int fd)
Definition: fd.c:347
#define close(a)
Definition: win32.h:12
#define snprintf
Definition: port.h:215
#define read(a, b, c)
Definition: win32.h:13

◆ BackupInProgress()

bool BackupInProgress ( void  )

Definition at line 11935 of file xlog.c.

References BACKUP_LABEL_FILE, and stat.

Referenced by pg_is_in_backup(), and PostmasterStateMachine().

11936 {
11937  struct stat stat_buf;
11938 
11939  return (stat(BACKUP_LABEL_FILE, &stat_buf) == 0);
11940 }
struct stat stat_buf
Definition: pg_standby.c:100
#define BACKUP_LABEL_FILE
Definition: xlog.h:389
#define stat
Definition: win32_port.h:275

◆ BaseInit()

void BaseInit ( void  )

Definition at line 537 of file postinit.c.

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

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

538 {
539  /*
540  * Attach to shared memory and semaphores, and initialize our
541  * input/output/debugging file descriptors.
542  */
544  DebugFileOpen();
545 
546  /* Do local initialization of file, storage and buffer managers */
547  InitFileAccess();
548  InitSync();
549  smgrinit();
551 }
static void InitCommunication(void)
Definition: postinit.c:429
void InitBufferPoolAccess(void)
Definition: bufmgr.c:2514
void DebugFileOpen(void)
Definition: elog.c:1927
void smgrinit(void)
Definition: smgr.c:111
void InitSync(void)
Definition: sync.c:128
void InitFileAccess(void)
Definition: fd.c:854

◆ CancelBackup()

void CancelBackup ( void  )

Definition at line 11955 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().

11956 {
11957  struct stat stat_buf;
11958 
11959  /* if the backup_label file is not there, return */
11960  if (stat(BACKUP_LABEL_FILE, &stat_buf) < 0)
11961  return;
11962 
11963  /* remove leftover file from previously canceled backup if it exists */
11964  unlink(BACKUP_LABEL_OLD);
11965 
11967  {
11968  ereport(WARNING,
11970  errmsg("online backup mode was not canceled"),
11971  errdetail("File \"%s\" could not be renamed to \"%s\": %m.",
11973  return;
11974  }
11975 
11976  /* if the tablespace_map file is not there, return */
11977  if (stat(TABLESPACE_MAP, &stat_buf) < 0)
11978  {
11979  ereport(LOG,
11980  (errmsg("online backup mode canceled"),
11981  errdetail("File \"%s\" was renamed to \"%s\".",
11983  return;
11984  }
11985 
11986  /* remove leftover file from previously canceled backup if it exists */
11987  unlink(TABLESPACE_MAP_OLD);
11988 
11990  {
11991  ereport(LOG,
11992  (errmsg("online backup mode canceled"),
11993  errdetail("Files \"%s\" and \"%s\" were renamed to "
11994  "\"%s\" and \"%s\", respectively.",
11997  }
11998  else
11999  {
12000  ereport(WARNING,
12002  errmsg("online backup mode canceled"),
12003  errdetail("File \"%s\" was renamed to \"%s\", but "
12004  "file \"%s\" could not be renamed to \"%s\": %m.",
12007  }
12008 }
#define DEBUG1
Definition: elog.h:25
#define LOG
Definition: elog.h:26
#define BACKUP_LABEL_OLD
Definition: xlog.h:390
#define TABLESPACE_MAP
Definition: xlog.h:392
struct stat stat_buf
Definition: pg_standby.c:100
int errdetail(const char *fmt,...)
Definition: elog.c:1048
int errcode_for_file_access(void)
Definition: elog.c:727
int durable_rename(const char *oldfile, const char *newfile, int elevel)
Definition: fd.c:687
#define WARNING
Definition: elog.h:40
#define ereport(elevel,...)
Definition: elog.h:155
#define TABLESPACE_MAP_OLD
Definition: xlog.h:393
int errmsg(const char *fmt,...)
Definition: elog.c:915
#define BACKUP_LABEL_FILE
Definition: xlog.h:389
#define stat
Definition: win32_port.h:275

◆ ChangeToDataDir()

void ChangeToDataDir ( void  )

Definition at line 416 of file miscinit.c.

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

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

417 {
419 
420  if (chdir(DataDir) < 0)
421  ereport(FATAL,
423  errmsg("could not change directory to \"%s\": %m",
424  DataDir)));
425 }
#define AssertState(condition)
Definition: c.h:795
#define FATAL
Definition: elog.h:54
int errcode_for_file_access(void)
Definition: elog.c:727
#define ereport(elevel,...)
Definition: elog.h:155
int errmsg(const char *fmt,...)
Definition: elog.c:915
char * DataDir
Definition: globals.c:63

◆ check_stack_depth()

void check_stack_depth ( void  )

Definition at line 3377 of file postgres.c.

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

Referenced by AlterTypeRecurse(), apply_scanjoin_target_to_paths(), checkCond(), clean_NOT_intree(), clean_stopword_intree(), cntsize(), contains_required_value(), convertJsonbValue(), copyObjectImpl(), Cover(), create_plan_recurse(), datum_to_json(), datum_to_jsonb(), dofindsubquery(), emit_jsp_gin_entries(), equal(), EventTriggerInvoke(), ExecEndNode(), ExecEvalSubPlan(), ExecInitExprRec(), ExecInitNode(), ExecMakeFunctionResultSet(), ExecProcNodeFirst(), ExecShutdownNode(), execute(), executeAnyItem(), executeItemOptUnwrapTarget(), expand_partitioned_rtentry(), expression_tree_mutator(), expression_tree_walker(), extract_jsp_bool_expr(), fillQT(), find_composite_type_dependencies(), find_matching_subplans_recurse(), findoprnd(), findoprnd_recurse(), flatten_grouping_sets(), flattenJsonPathParseItem(), FreePageManagerDumpBtree(), freetree(), generate_partition_qual(), generate_partitionwise_join_paths(), get_query_def(), get_rels_with_domain(), get_rule_expr(), get_setop_query(), get_steps_using_prefix_recurse(), gistSplit(), hash_range(), hash_range_extended(), hash_record(), hash_record_extended(), hk_depth_search(), infix(), inline_set_returning_function(), int_query_opr_selec(), JsonbDeepContains(), JumbleExpr(), ltree_execute(), makepol(), maketree(), MatchText(), MultiExecProcNode(), outNode(), parse_array(), parse_object(), parseNodeString(), plainnode(), planstate_tree_walker(), plperl_hash_from_tuple(), plperl_sv_to_datum(), PLy_input_setup_func(), PLy_output_setup_func(), populate_array_dim_jsonb(), populate_record_field(), printJsonPathItem(), 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(), relation_is_updatable(), resolve_special_varno(), set_append_rel_size(), setPath(), split_array(), standard_ProcessUtility(), transformExprRecurse(), transformSetOperationTree(), traverse_lacons(), try_partitionwise_join(), TS_execute_recurse(), TS_phrase_execute(), tsquery_opr_selec(), and tsquery_requires_match().

3378 {
3379  if (stack_is_too_deep())
3380  {
3381  ereport(ERROR,
3382  (errcode(ERRCODE_STATEMENT_TOO_COMPLEX),
3383  errmsg("stack depth limit exceeded"),
3384  errhint("Increase the configuration parameter \"max_stack_depth\" (currently %dkB), "
3385  "after ensuring the platform's stack depth limit is adequate.",
3386  max_stack_depth)));
3387  }
3388 }
int errhint(const char *fmt,...)
Definition: elog.c:1162
int errcode(int sqlerrcode)
Definition: elog.c:704
#define ERROR
Definition: elog.h:45
int max_stack_depth
Definition: postgres.c:100
#define ereport(elevel,...)
Definition: elog.h:155
int errmsg(const char *fmt,...)
Definition: elog.c:915
bool stack_is_too_deep(void)
Definition: postgres.c:3391

◆ checkDataDir()

void checkDataDir ( void  )

Definition at line 302 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::st_mode, stat::st_uid, stat, and ValidatePgVersion().

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

303 {
304  struct stat stat_buf;
305 
306  Assert(DataDir);
307 
308  if (stat(DataDir, &stat_buf) != 0)
309  {
310  if (errno == ENOENT)
311  ereport(FATAL,
313  errmsg("data directory \"%s\" does not exist",
314  DataDir)));
315  else
316  ereport(FATAL,
318  errmsg("could not read permissions of directory \"%s\": %m",
319  DataDir)));
320  }
321 
322  /* eventual chdir would fail anyway, but let's test ... */
323  if (!S_ISDIR(stat_buf.st_mode))
324  ereport(FATAL,
325  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
326  errmsg("specified data directory \"%s\" is not a directory",
327  DataDir)));
328 
329  /*
330  * Check that the directory belongs to my userid; if not, reject.
331  *
332  * This check is an essential part of the interlock that prevents two
333  * postmasters from starting in the same directory (see CreateLockFile()).
334  * Do not remove or weaken it.
335  *
336  * XXX can we safely enable this check on Windows?
337  */
338 #if !defined(WIN32) && !defined(__CYGWIN__)
339  if (stat_buf.st_uid != geteuid())
340  ereport(FATAL,
341  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
342  errmsg("data directory \"%s\" has wrong ownership",
343  DataDir),
344  errhint("The server must be started by the user that owns the data directory.")));
345 #endif
346 
347  /*
348  * Check if the directory has correct permissions. If not, reject.
349  *
350  * Only two possible modes are allowed, 0700 and 0750. The latter mode
351  * indicates that group read/execute should be allowed on all newly
352  * created files and directories.
353  *
354  * XXX temporarily suppress check when on Windows, because there may not
355  * be proper support for Unix-y file permissions. Need to think of a
356  * reasonable check to apply on Windows.
357  */
358 #if !defined(WIN32) && !defined(__CYGWIN__)
360  ereport(FATAL,
361  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
362  errmsg("data directory \"%s\" has invalid permissions",
363  DataDir),
364  errdetail("Permissions should be u=rwx (0700) or u=rwx,g=rx (0750).")));
365 #endif
366 
367  /*
368  * Reset creation modes and mask based on the mode of the data directory.
369  *
370  * The mask was set earlier in startup to disallow group permissions on
371  * newly created files and directories. However, if group read/execute
372  * are present on the data directory then modify the create modes and mask
373  * to allow group read/execute on newly created files and directories and
374  * set the data_directory_mode GUC.
375  *
376  * Suppress when on Windows, because there may not be proper support for
377  * Unix-y file permissions.
378  */
379 #if !defined(WIN32) && !defined(__CYGWIN__)
381 
382  umask(pg_mode_mask);
384 #endif
385 
386  /* Check for PG_VERSION */
388 }
int errhint(const char *fmt,...)
Definition: elog.c:1162
void ValidatePgVersion(const char *path)
Definition: miscinit.c:1528
int errcode(int sqlerrcode)
Definition: elog.c:704
short st_uid
Definition: win32_port.h:262
#define PG_MODE_MASK_GROUP
Definition: file_perm.h:29
struct stat stat_buf
Definition: pg_standby.c:100
#define FATAL
Definition: elog.h:54
int errdetail(const char *fmt,...)
Definition: elog.c:1048
int errcode_for_file_access(void)
Definition: elog.c:727
int pg_dir_create_mode
Definition: file_perm.c:18
unsigned short st_mode
Definition: win32_port.h:260
#define ereport(elevel,...)
Definition: elog.h:155
#define Assert(condition)
Definition: c.h:792
#define S_ISDIR(m)
Definition: win32_port.h:316
int errmsg(const char *fmt,...)
Definition: elog.c:915
int data_directory_mode
Definition: globals.c:69
void SetDataDirectoryCreatePerm(int dataDirMode)
Definition: file_perm.c:34
char * DataDir
Definition: globals.c:63
int pg_mode_mask
Definition: file_perm.c:25
#define stat
Definition: win32_port.h:275

◆ CreateDataDirLockFile()

void CreateDataDirLockFile ( bool  amPostmaster)

Definition at line 1273 of file miscinit.c.

References CreateLockFile(), DataDir, and DIRECTORY_LOCK_FILE.

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

1274 {
1275  CreateLockFile(DIRECTORY_LOCK_FILE, amPostmaster, "", true, DataDir);
1276 }
#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:968
char * DataDir
Definition: globals.c:63

◆ CreateSocketLockFile()

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

Definition at line 1282 of file miscinit.c.

References CreateLockFile(), MAXPGPATH, and snprintf.

Referenced by StreamServerPort().

1284 {
1285  char lockfile[MAXPGPATH];
1286 
1287  snprintf(lockfile, sizeof(lockfile), "%s.lock", socketfile);
1288  CreateLockFile(lockfile, amPostmaster, socketDir, false, socketfile);
1289 }
static void CreateLockFile(const char *filename, bool amPostmaster, const char *socketDir, bool isDDLock, const char *refName)
Definition: miscinit.c:968
#define MAXPGPATH
#define snprintf
Definition: port.h:215

◆ get_hash_mem()

int get_hash_mem ( void  )

Definition at line 3389 of file nodeHash.c.

References Assert, hash_mem_multiplier, MAX_KILOBYTES, and work_mem.

Referenced by BuildTupleHashTableExt(), choose_hashed_setop(), consider_groupingsets_paths(), create_unique_path(), ExecChooseHashTableSize(), ExecParallelHashIncreaseNumBatches(), final_cost_hashjoin(), hash_agg_set_limits(), hash_choose_num_partitions(), subpath_is_hashable(), and subplan_is_hashable().

3390 {
3391  double hash_mem;
3392 
3393  Assert(hash_mem_multiplier >= 1.0);
3394 
3395  hash_mem = (double) work_mem * hash_mem_multiplier;
3396 
3397  /*
3398  * guc.c enforces a MAX_KILOBYTES limitation on work_mem in order to
3399  * support the assumption that raw derived byte values can be stored in
3400  * 'long' variables. The returned hash_mem value must also meet this
3401  * assumption.
3402  *
3403  * We clamp the final value rather than throw an error because it should
3404  * be possible to set work_mem and hash_mem_multiplier independently.
3405  */
3406  if (hash_mem < MAX_KILOBYTES)
3407  return (int) hash_mem;
3408 
3409  return MAX_KILOBYTES;
3410 }
double hash_mem_multiplier
Definition: globals.c:123
#define MAX_KILOBYTES
Definition: guc.h:26
int work_mem
Definition: globals.c:122
#define Assert(condition)
Definition: c.h:792

◆ GetAuthenticatedUserId()

Oid GetAuthenticatedUserId ( void  )

Definition at line 535 of file miscinit.c.

References AssertState, AuthenticatedUserId, and OidIsValid.

Referenced by InitializeParallelDSM().

536 {
538  return AuthenticatedUserId;
539 }
#define AssertState(condition)
Definition: c.h:795
#define OidIsValid(objectId)
Definition: c.h:698
static Oid AuthenticatedUserId
Definition: miscinit.c:456

◆ GetBackendTypeDesc()

const char* GetBackendTypeDesc ( BackendType  backendType)

Definition at line 230 of file miscinit.c.

References B_ARCHIVER, B_AUTOVAC_LAUNCHER, B_AUTOVAC_WORKER, B_BACKEND, B_BG_WORKER, B_BG_WRITER, B_CHECKPOINTER, B_INVALID, B_LOGGER, B_STARTUP, B_STATS_COLLECTOR, B_WAL_RECEIVER, B_WAL_SENDER, and B_WAL_WRITER.

Referenced by BackendInitialize(), init_ps_display(), log_line_prefix(), pg_stat_get_activity(), and write_csvlog().

231 {
232  const char *backendDesc = "unknown process type";
233 
234  switch (backendType)
235  {
236  case B_INVALID:
237  backendDesc = "not initialized";
238  break;
239  case B_AUTOVAC_LAUNCHER:
240  backendDesc = "autovacuum launcher";
241  break;
242  case B_AUTOVAC_WORKER:
243  backendDesc = "autovacuum worker";
244  break;
245  case B_BACKEND:
246  backendDesc = "client backend";
247  break;
248  case B_BG_WORKER:
249  backendDesc = "background worker";
250  break;
251  case B_BG_WRITER:
252  backendDesc = "background writer";
253  break;
254  case B_CHECKPOINTER:
255  backendDesc = "checkpointer";
256  break;
257  case B_STARTUP:
258  backendDesc = "startup";
259  break;
260  case B_WAL_RECEIVER:
261  backendDesc = "walreceiver";
262  break;
263  case B_WAL_SENDER:
264  backendDesc = "walsender";
265  break;
266  case B_WAL_WRITER:
267  backendDesc = "walwriter";
268  break;
269  case B_ARCHIVER:
270  backendDesc = "archiver";
271  break;
272  case B_STATS_COLLECTOR:
273  backendDesc = "stats collector";
274  break;
275  case B_LOGGER:
276  backendDesc = "logger";
277  break;
278  }
279 
280  return backendDesc;
281 }

◆ GetCurrentRoleId()

Oid GetCurrentRoleId ( void  )

Definition at line 835 of file miscinit.c.

References InvalidOid, OuterUserId, and SetRoleIsActive.

Referenced by InitializeParallelDSM(), and show_role().

836 {
837  if (SetRoleIsActive)
838  return OuterUserId;
839  else
840  return InvalidOid;
841 }
static Oid OuterUserId
Definition: miscinit.c:458
#define InvalidOid
Definition: postgres_ext.h:36
static bool SetRoleIsActive
Definition: miscinit.c:468

◆ GetOuterUserId()

Oid GetOuterUserId ( void  )

Definition at line 487 of file miscinit.c.

References AssertState, OidIsValid, and OuterUserId.

Referenced by DropRole(), and RenameRole().

488 {
490  return OuterUserId;
491 }
#define AssertState(condition)
Definition: c.h:795
static Oid OuterUserId
Definition: miscinit.c:458
#define OidIsValid(objectId)
Definition: c.h:698

◆ GetSessionUserId()

Oid GetSessionUserId ( void  )

Definition at line 510 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().

511 {
513  return SessionUserId;
514 }
#define AssertState(condition)
Definition: c.h:795
static Oid SessionUserId
Definition: miscinit.c:457
#define OidIsValid(objectId)
Definition: c.h:698

◆ GetUserId()

Oid GetUserId ( void  )

Definition at line 476 of file miscinit.c.

References AssertState, CurrentUserId, and OidIsValid.

Referenced by AddRoleMems(), AggregateCreate(), 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(), AlterStatistics(), AlterSubscription(), AlterSubscriptionOwner_internal(), AlterTableMoveAll(), AlterTableSpaceOptions(), AlterTSConfiguration(), AlterTSDictionary(), AlterType(), AlterTypeNamespace_oid(), AlterTypeOwner(), ATExecAddColumn(), ATExecChangeOwner(), ATPrepAlterColumnType(), 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_internal(), 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(), ExecAlterObjectDependsStmt(), 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(), execute_extension_script(), ExecuteCallStmt(), ExecuteDoStmt(), ExecuteTruncateGuts(), extension_is_trusted(), file_fdw_validator(), findRangeCanonicalFunction(), findRangeSubtypeDiffFunction(), FinishPreparedTransaction(), get_connect_string(), get_explain_guc_options(), 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(), 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_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(), sanity_check_relation(), select_perl_context(), set_foreign_rel_properties(), ShowAllGUCConfig(), statext_is_compatible_clause(), superuser(), TerminateOtherDBBackends(), transformTableLikeClause(), truncate_check_perms(), user_mapping_ddl_aclcheck(), vacuum_is_relation_owner(), ValidateJoinEstimator(), and ValidateRestrictionEstimator().

477 {
479  return CurrentUserId;
480 }
#define AssertState(condition)
Definition: c.h:795
#define OidIsValid(objectId)
Definition: c.h:698
static Oid CurrentUserId
Definition: miscinit.c:459

◆ GetUserIdAndContext()

void GetUserIdAndContext ( Oid userid,
bool sec_def_context 
)

Definition at line 630 of file miscinit.c.

References CurrentUserId, and InLocalUserIdChange().

631 {
632  *userid = CurrentUserId;
633  *sec_def_context = InLocalUserIdChange();
634 }
bool InLocalUserIdChange(void)
Definition: miscinit.c:599
static Oid CurrentUserId
Definition: miscinit.c:459

◆ GetUserIdAndSecContext()

void GetUserIdAndSecContext ( Oid userid,
int *  sec_context 
)

◆ GetUserNameFromId()

char* GetUserNameFromId ( Oid  roleid,
bool  noerr 
)

Definition at line 891 of file miscinit.c.

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

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

892 {
893  HeapTuple tuple;
894  char *result;
895 
896  tuple = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
897  if (!HeapTupleIsValid(tuple))
898  {
899  if (!noerr)
900  ereport(ERROR,
901  (errcode(ERRCODE_UNDEFINED_OBJECT),
902  errmsg("invalid role OID: %u", roleid)));
903  result = NULL;
904  }
905  else
906  {
907  result = pstrdup(NameStr(((Form_pg_authid) GETSTRUCT(tuple))->rolname));
908  ReleaseSysCache(tuple);
909  }
910  return result;
911 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
NameData rolname
Definition: pg_authid.h:34
char * pstrdup(const char *in)
Definition: mcxt.c:1187
int errcode(int sqlerrcode)
Definition: elog.c:704
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:56
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:45
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1127
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1175
#define ereport(elevel,...)
Definition: elog.h:155
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
int errmsg(const char *fmt,...)
Definition: elog.c:915
#define NameStr(name)
Definition: c.h:669

◆ has_rolreplication()

bool has_rolreplication ( Oid  roleid)

Definition at line 657 of file miscinit.c.

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

Referenced by check_permissions(), and InitPostgres().

658 {
659  bool result = false;
660  HeapTuple utup;
661 
662  utup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
663  if (HeapTupleIsValid(utup))
664  {
665  result = ((Form_pg_authid) GETSTRUCT(utup))->rolreplication;
666  ReleaseSysCache(utup);
667  }
668  return result;
669 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:56
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
bool rolreplication
Definition: pg_authid.h:40
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1127
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1175
#define HeapTupleIsValid(tuple)
Definition: htup.h:78

◆ InitializeMaxBackends()

void InitializeMaxBackends ( void  )

Definition at line 515 of file postinit.c.

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

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

516 {
517  Assert(MaxBackends == 0);
518 
519  /* the extra unit accounts for the autovacuum launcher */
522 
523  /* internal error because the values were all checked previously */
525  elog(ERROR, "too many backends configured");
526 }
#define ERROR
Definition: elog.h:45
#define MAX_BACKENDS
Definition: postmaster.h:75
int MaxBackends
Definition: globals.c:137
int max_wal_senders
Definition: walsender.c:121
int MaxConnections
Definition: globals.c:134
int autovacuum_max_workers
Definition: autovacuum.c:115
#define Assert(condition)
Definition: c.h:792
#define elog(elevel,...)
Definition: elog.h:228
int max_worker_processes
Definition: globals.c:135

◆ InitializeSessionUserId()

void InitializeSessionUserId ( const char *  rolename,
Oid  useroid 
)

Definition at line 675 of file miscinit.c.

References AcceptInvalidationMessages(), AssertState, AuthenticatedUserId, AuthenticatedUserIsSuperuser, AUTHNAME, AUTHOID, CountUserBackends(), ereport, errcode(), errmsg(), FATAL, GETSTRUCT, 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().

676 {
677  HeapTuple roleTup;
678  Form_pg_authid rform;
679  char *rname;
680 
681  /*
682  * Don't do scans if we're bootstrapping, none of the system catalogs
683  * exist yet, and they should be owned by postgres anyway.
684  */
686 
687  /* call only once */
689 
690  /*
691  * Make sure syscache entries are flushed for recent catalog changes. This
692  * allows us to find roles that were created on-the-fly during
693  * authentication.
694  */
696 
697  if (rolename != NULL)
698  {
699  roleTup = SearchSysCache1(AUTHNAME, PointerGetDatum(rolename));
700  if (!HeapTupleIsValid(roleTup))
701  ereport(FATAL,
702  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
703  errmsg("role \"%s\" does not exist", rolename)));
704  }
705  else
706  {
707  roleTup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
708  if (!HeapTupleIsValid(roleTup))
709  ereport(FATAL,
710  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
711  errmsg("role with OID %u does not exist", roleid)));
712  }
713 
714  rform = (Form_pg_authid) GETSTRUCT(roleTup);
715  roleid = rform->oid;
716  rname = NameStr(rform->rolname);
717 
718  AuthenticatedUserId = roleid;
719  AuthenticatedUserIsSuperuser = rform->rolsuper;
720 
721  /* This sets OuterUserId/CurrentUserId too */
723 
724  /* Also mark our PGPROC entry with the authenticated user id */
725  /* (We assume this is an atomic store so no lock is needed) */
726  MyProc->roleId = roleid;
727 
728  /*
729  * These next checks are not enforced when in standalone mode, so that
730  * there is a way to recover from sillinesses like "UPDATE pg_authid SET
731  * rolcanlogin = false;".
732  */
733  if (IsUnderPostmaster)
734  {
735  /*
736  * Is role allowed to login at all?
737  */
738  if (!rform->rolcanlogin)
739  ereport(FATAL,
740  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
741  errmsg("role \"%s\" is not permitted to log in",
742  rname)));
743 
744  /*
745  * Check connection limit for this role.
746  *
747  * There is a race condition here --- we create our PGPROC before
748  * checking for other PGPROCs. If two backends did this at about the
749  * same time, they might both think they were over the limit, while
750  * ideally one should succeed and one fail. Getting that to work
751  * exactly seems more trouble than it is worth, however; instead we
752  * just document that the connection limit is approximate.
753  */
754  if (rform->rolconnlimit >= 0 &&
756  CountUserBackends(roleid) > rform->rolconnlimit)
757  ereport(FATAL,
758  (errcode(ERRCODE_TOO_MANY_CONNECTIONS),
759  errmsg("too many connections for role \"%s\"",
760  rname)));
761  }
762 
763  /* Record username and superuser status as GUC settings too */
764  SetConfigOption("session_authorization", rname,
766  SetConfigOption("is_superuser",
767  AuthenticatedUserIsSuperuser ? "on" : "off",
769 
770  ReleaseSysCache(roleTup);
771 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
#define AssertState(condition)
Definition: c.h:795
void AcceptInvalidationMessages(void)
Definition: inval.c:687
PGPROC * MyProc
Definition: proc.c:68
#define PointerGetDatum(X)
Definition: postgres.h:556
Oid roleId
Definition: proc.h:155
int errcode(int sqlerrcode)
Definition: elog.c:704
#define OidIsValid(objectId)
Definition: c.h:698
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:56
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define FATAL
Definition: elog.h:54
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:7879
bool IsUnderPostmaster
Definition: globals.c:110
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:462
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1127
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1175
#define ereport(elevel,...)
Definition: elog.h:155
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
int CountUserBackends(Oid roleid)
Definition: procarray.c:3535
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:394
int errmsg(const char *fmt,...)
Definition: elog.c:915
#define NameStr(name)
Definition: c.h:669
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:518
static Oid AuthenticatedUserId
Definition: miscinit.c:456

◆ InitializeSessionUserIdStandalone()

void InitializeSessionUserIdStandalone ( void  )

Definition at line 778 of file miscinit.c.

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

Referenced by InitPostgres().

779 {
780  /*
781  * This function should only be called in single-user mode, in autovacuum
782  * workers, and in background workers.
783  */
785 
786  /* call only once */
788 
789  AuthenticatedUserId = BOOTSTRAP_SUPERUSERID;
791 
792  SetSessionUserId(BOOTSTRAP_SUPERUSERID, true);
793 }
#define AssertState(condition)
Definition: c.h:795
#define OidIsValid(objectId)
Definition: c.h:698
bool IsBackgroundWorker
Definition: globals.c:112
bool IsUnderPostmaster
Definition: globals.c:110
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:462
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:3394
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:518
static Oid AuthenticatedUserId
Definition: miscinit.c:456

◆ InitPostgres()

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

Definition at line 579 of file postinit.c.

References am_db_walsender, am_walsender, Assert, before_shmem_exit(), CAC_SUPERUSER, Port::canAcceptConnections, CheckDeadLockAlert(), CheckMyDatabase(), CommitTransactionCommand(), CreateAuxProcessResourceOwner(), CurrentResourceOwner, PGPROC::databaseId, 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(), HeapTupleIsValid, IDLE_IN_TRANSACTION_SESSION_TIMEOUT, IDLE_SESSION_TIMEOUT, IdleInTransactionSessionTimeoutHandler(), IdleSessionTimeoutHandler(), 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().

581 {
582  bool bootstrap = IsBootstrapProcessingMode();
583  bool am_superuser;
584  char *fullpath;
585  char dbname[NAMEDATALEN];
586 
587  elog(DEBUG3, "InitPostgres");
588 
589  /*
590  * Add my PGPROC struct to the ProcArray.
591  *
592  * Once I have done this, I am visible to other backends!
593  */
595 
596  /*
597  * Initialize my entry in the shared-invalidation manager's array of
598  * per-backend data.
599  *
600  * Sets up MyBackendId, a unique backend identifier.
601  */
603 
604  SharedInvalBackendInit(false);
605 
606  if (MyBackendId > MaxBackends || MyBackendId <= 0)
607  elog(FATAL, "bad backend ID: %d", MyBackendId);
608 
609  /* Now that we have a BackendId, we can participate in ProcSignal */
611 
612  /*
613  * Also set up timeout handlers needed for backend operation. We need
614  * these in every case except bootstrap.
615  */
616  if (!bootstrap)
617  {
624  }
625 
626  /*
627  * bufmgr needs another initialization call too
628  */
630 
631  /*
632  * Initialize local process's access to XLOG.
633  */
634  if (IsUnderPostmaster)
635  {
636  /*
637  * The postmaster already started the XLOG machinery, but we need to
638  * call InitXLOGAccess(), if the system isn't in hot-standby mode.
639  * This is handled by calling RecoveryInProgress and ignoring the
640  * result.
641  */
642  (void) RecoveryInProgress();
643  }
644  else
645  {
646  /*
647  * We are either a bootstrap process or a standalone backend. Either
648  * way, start up the XLOG machinery, and register to have it closed
649  * down at exit.
650  *
651  * We don't yet have an aux-process resource owner, but StartupXLOG
652  * and ShutdownXLOG will need one. Hence, create said resource owner
653  * (and register a callback to clean it up after ShutdownXLOG runs).
654  */
656 
657  StartupXLOG();
658  /* Release (and warn about) any buffer pins leaked in StartupXLOG */
660  /* Reset CurrentResourceOwner to nothing for the moment */
661  CurrentResourceOwner = NULL;
662 
664  }
665 
666  /*
667  * Initialize the relation cache and the system catalog caches. Note that
668  * no catalog access happens here; we only set up the hashtable structure.
669  * We must do this before starting a transaction because transaction abort
670  * would try to touch these hashtables.
671  */
674  InitPlanCache();
675 
676  /* Initialize portal manager */
678 
679  /* Initialize stats collection --- must happen before first xact */
680  if (!bootstrap)
682 
683  /*
684  * Load relcache entries for the shared system catalogs. This must create
685  * at least entries for pg_database and catalogs used for authentication.
686  */
688 
689  /*
690  * Set up process-exit callback to do pre-shutdown cleanup. This is the
691  * first before_shmem_exit callback we register; thus, this will be the
692  * last thing we do before low-level modules like the buffer manager begin
693  * to close down. We need to have this in place before we begin our first
694  * transaction --- if we fail during the initialization transaction, as is
695  * entirely possible, we need the AbortTransaction call to clean up.
696  */
698 
699  /* The autovacuum launcher is done here */
701  {
702  /* report this backend in the PgBackendStatus array */
703  pgstat_bestart();
704 
705  return;
706  }
707 
708  /*
709  * Start a new transaction here before first access to db, and get a
710  * snapshot. We don't have a use for the snapshot itself, but we're
711  * interested in the secondary effect that it sets RecentGlobalXmin. (This
712  * is critical for anything that reads heap pages, because HOT may decide
713  * to prune them even if the process doesn't attempt to modify any
714  * tuples.)
715  *
716  * FIXME: This comment is inaccurate / the code buggy. A snapshot that is
717  * not pushed/active does not reliably prevent HOT pruning (->xmin could
718  * e.g. be cleared when cache invalidations are processed).
719  */
720  if (!bootstrap)
721  {
722  /* statement_timestamp must be set for timeouts to work correctly */
725 
726  /*
727  * transaction_isolation will have been set to the default by the
728  * above. If the default is "serializable", and we are in hot
729  * standby, we will fail if we don't change it to something lower.
730  * Fortunately, "read committed" is plenty good enough.
731  */
733 
734  (void) GetTransactionSnapshot();
735  }
736 
737  /*
738  * Perform client authentication if necessary, then figure out our
739  * postgres user ID, and see if we are a superuser.
740  *
741  * In standalone mode and in autovacuum worker processes, we use a fixed
742  * ID, otherwise we figure it out from the authenticated user name.
743  */
744  if (bootstrap || IsAutoVacuumWorkerProcess())
745  {
747  am_superuser = true;
748  }
749  else if (!IsUnderPostmaster)
750  {
752  am_superuser = true;
753  if (!ThereIsAtLeastOneRole())
755  (errcode(ERRCODE_UNDEFINED_OBJECT),
756  errmsg("no roles are defined in this database system"),
757  errhint("You should immediately run CREATE USER \"%s\" SUPERUSER;.",
758  username != NULL ? username : "postgres")));
759  }
760  else if (IsBackgroundWorker)
761  {
762  if (username == NULL && !OidIsValid(useroid))
763  {
765  am_superuser = true;
766  }
767  else
768  {
770  am_superuser = superuser();
771  }
772  }
773  else
774  {
775  /* normal multiuser case */
776  Assert(MyProcPort != NULL);
779  am_superuser = superuser();
780  }
781 
782  /*
783  * If we're trying to shut down, only superusers can connect, and new
784  * replication connections are not allowed.
785  */
786  if ((!am_superuser || am_walsender) &&
787  MyProcPort != NULL &&
789  {
790  if (am_walsender)
791  ereport(FATAL,
792  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
793  errmsg("new replication connections are not allowed during database shutdown")));
794  else
795  ereport(FATAL,
796  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
797  errmsg("must be superuser to connect during database shutdown")));
798  }
799 
800  /*
801  * Binary upgrades only allowed super-user connections
802  */
803  if (IsBinaryUpgrade && !am_superuser)
804  {
805  ereport(FATAL,
806  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
807  errmsg("must be superuser to connect in binary upgrade mode")));
808  }
809 
810  /*
811  * The last few connection slots are reserved for superusers. Replication
812  * connections are drawn from slots reserved with max_wal_senders and not
813  * limited by max_connections or superuser_reserved_connections.
814  */
815  if (!am_superuser && !am_walsender &&
816  ReservedBackends > 0 &&
818  ereport(FATAL,
819  (errcode(ERRCODE_TOO_MANY_CONNECTIONS),
820  errmsg("remaining connection slots are reserved for non-replication superuser connections")));
821 
822  /* Check replication permissions needed for walsender processes. */
823  if (am_walsender)
824  {
825  Assert(!bootstrap);
826 
827  if (!superuser() && !has_rolreplication(GetUserId()))
828  ereport(FATAL,
829  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
830  errmsg("must be superuser or replication role to start walsender")));
831  }
832 
833  /*
834  * If this is a plain walsender only supporting physical replication, we
835  * don't want to connect to any particular database. Just finish the
836  * backend startup by processing any options from the startup packet, and
837  * we're done.
838  */
840  {
841  /* process any options passed in the startup packet */
842  if (MyProcPort != NULL)
843  process_startup_options(MyProcPort, am_superuser);
844 
845  /* Apply PostAuthDelay as soon as we've read all options */
846  if (PostAuthDelay > 0)
847  pg_usleep(PostAuthDelay * 1000000L);
848 
849  /* initialize client encoding */
851 
852  /* report this backend in the PgBackendStatus array */
853  pgstat_bestart();
854 
855  /* close the transaction we started above */
857 
858  return;
859  }
860 
861  /*
862  * Set up the global variables holding database id and default tablespace.
863  * But note we won't actually try to touch the database just yet.
864  *
865  * We take a shortcut in the bootstrap case, otherwise we have to look up
866  * the db's entry in pg_database.
867  */
868  if (bootstrap)
869  {
870  MyDatabaseId = TemplateDbOid;
871  MyDatabaseTableSpace = DEFAULTTABLESPACE_OID;
872  }
873  else if (in_dbname != NULL)
874  {
875  HeapTuple tuple;
876  Form_pg_database dbform;
877 
878  tuple = GetDatabaseTuple(in_dbname);
879  if (!HeapTupleIsValid(tuple))
880  ereport(FATAL,
881  (errcode(ERRCODE_UNDEFINED_DATABASE),
882  errmsg("database \"%s\" does not exist", in_dbname)));
883  dbform = (Form_pg_database) GETSTRUCT(tuple);
884  MyDatabaseId = dbform->oid;
885  MyDatabaseTableSpace = dbform->dattablespace;
886  /* take database name from the caller, just for paranoia */
887  strlcpy(dbname, in_dbname, sizeof(dbname));
888  }
889  else if (OidIsValid(dboid))
890  {
891  /* caller specified database by OID */
892  HeapTuple tuple;
893  Form_pg_database dbform;
894 
895  tuple = GetDatabaseTupleByOid(dboid);
896  if (!HeapTupleIsValid(tuple))
897  ereport(FATAL,
898  (errcode(ERRCODE_UNDEFINED_DATABASE),
899  errmsg("database %u does not exist", dboid)));
900  dbform = (Form_pg_database) GETSTRUCT(tuple);
901  MyDatabaseId = dbform->oid;
902  MyDatabaseTableSpace = dbform->dattablespace;
903  Assert(MyDatabaseId == dboid);
904  strlcpy(dbname, NameStr(dbform->datname), sizeof(dbname));
905  /* pass the database name back to the caller */
906  if (out_dbname)
907  strcpy(out_dbname, dbname);
908  }
909  else
910  {
911  /*
912  * If this is a background worker not bound to any particular
913  * database, we're done now. Everything that follows only makes sense
914  * if we are bound to a specific database. We do need to close the
915  * transaction we started before returning.
916  */
917  if (!bootstrap)
918  {
919  pgstat_bestart();
921  }
922  return;
923  }
924 
925  /*
926  * Now, take a writer's lock on the database we are trying to connect to.
927  * If there is a concurrently running DROP DATABASE on that database, this
928  * will block us until it finishes (and has committed its update of
929  * pg_database).
930  *
931  * Note that the lock is not held long, only until the end of this startup
932  * transaction. This is OK since we will advertise our use of the
933  * database in the ProcArray before dropping the lock (in fact, that's the
934  * next thing to do). Anyone trying a DROP DATABASE after this point will
935  * see us in the array once they have the lock. Ordering is important for
936  * this because we don't want to advertise ourselves as being in this
937  * database until we have the lock; otherwise we create what amounts to a
938  * deadlock with CountOtherDBBackends().
939  *
940  * Note: use of RowExclusiveLock here is reasonable because we envision
941  * our session as being a concurrent writer of the database. If we had a
942  * way of declaring a session as being guaranteed-read-only, we could use
943  * AccessShareLock for such sessions and thereby not conflict against
944  * CREATE DATABASE.
945  */
946  if (!bootstrap)
947  LockSharedObject(DatabaseRelationId, MyDatabaseId, 0,
949 
950  /*
951  * Now we can mark our PGPROC entry with the database ID.
952  *
953  * We assume this is an atomic store so no lock is needed; though actually
954  * things would work fine even if it weren't atomic. Anyone searching the
955  * ProcArray for this database's ID should hold the database lock, so they
956  * would not be executing concurrently with this store. A process looking
957  * for another database's ID could in theory see a chance match if it read
958  * a partially-updated databaseId value; but as long as all such searches
959  * wait and retry, as in CountOtherDBBackends(), they will certainly see
960  * the correct value on their next try.
961  */
963 
964  /*
965  * We established a catalog snapshot while reading pg_authid and/or
966  * pg_database; but until we have set up MyDatabaseId, we won't react to
967  * incoming sinval messages for unshared catalogs, so we won't realize it
968  * if the snapshot has been invalidated. Assume it's no good anymore.
969  */
971 
972  /*
973  * Recheck pg_database to make sure the target database hasn't gone away.
974  * If there was a concurrent DROP DATABASE, this ensures we will die
975  * cleanly without creating a mess.
976  */
977  if (!bootstrap)
978  {
979  HeapTuple tuple;
980 
981  tuple = GetDatabaseTuple(dbname);
982  if (!HeapTupleIsValid(tuple) ||
983  MyDatabaseId != ((Form_pg_database) GETSTRUCT(tuple))->oid ||
984  MyDatabaseTableSpace != ((Form_pg_database) GETSTRUCT(tuple))->dattablespace)
985  ereport(FATAL,
986  (errcode(ERRCODE_UNDEFINED_DATABASE),
987  errmsg("database \"%s\" does not exist", dbname),
988  errdetail("It seems to have just been dropped or renamed.")));
989  }
990 
991  /*
992  * Now we should be able to access the database directory safely. Verify
993  * it's there and looks reasonable.
994  */
996 
997  if (!bootstrap)
998  {
999  if (access(fullpath, F_OK) == -1)
1000  {
1001  if (errno == ENOENT)
1002  ereport(FATAL,
1003  (errcode(ERRCODE_UNDEFINED_DATABASE),
1004  errmsg("database \"%s\" does not exist",
1005  dbname),
1006  errdetail("The database subdirectory \"%s\" is missing.",
1007  fullpath)));
1008  else
1009  ereport(FATAL,
1011  errmsg("could not access directory \"%s\": %m",
1012  fullpath)));
1013  }
1014 
1015  ValidatePgVersion(fullpath);
1016  }
1017 
1018  SetDatabasePath(fullpath);
1019 
1020  /*
1021  * It's now possible to do real access to the system catalogs.
1022  *
1023  * Load relcache entries for the system catalogs. This must create at
1024  * least the minimum set of "nailed-in" cache entries.
1025  */
1027 
1028  /* set up ACL framework (so CheckMyDatabase can check permissions) */
1029  initialize_acl();
1030 
1031  /*
1032  * Re-read the pg_database row for our database, check permissions and set
1033  * up database-specific GUC settings. We can't do this until all the
1034  * database-access infrastructure is up. (Also, it wants to know if the
1035  * user is a superuser, so the above stuff has to happen first.)
1036  */
1037  if (!bootstrap)
1038  CheckMyDatabase(dbname, am_superuser, override_allow_connections);
1039 
1040  /*
1041  * Now process any command-line switches and any additional GUC variable
1042  * settings passed in the startup packet. We couldn't do this before
1043  * because we didn't know if client is a superuser.
1044  */
1045  if (MyProcPort != NULL)
1046  process_startup_options(MyProcPort, am_superuser);
1047 
1048  /* Process pg_db_role_setting options */
1050 
1051  /* Apply PostAuthDelay as soon as we've read all options */
1052  if (PostAuthDelay > 0)
1053  pg_usleep(PostAuthDelay * 1000000L);
1054 
1055  /*
1056  * Initialize various default states that can't be set up until we've
1057  * selected the active user and gotten the right GUC settings.
1058  */
1059 
1060  /* set default namespace search path */
1062 
1063  /* initialize client encoding */
1065 
1066  /* Initialize this backend's session state. */
1068 
1069  /* report this backend in the PgBackendStatus array */
1070  if (!bootstrap)
1071  pgstat_bestart();
1072 
1073  /* close the transaction we started above */
1074  if (!bootstrap)
1076 }
int errhint(const char *fmt,...)
Definition: elog.c:1162
BackendId MyBackendId
Definition: globals.c:82
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
struct Port * MyProcPort
Definition: globals.c:44
CAC_state canAcceptConnections
Definition: libpq-be.h:133
void SharedInvalBackendInit(bool sendOnly)
Definition: sinvaladt.c:257
#define DEBUG3
Definition: elog.h:23
Oid GetUserId(void)
Definition: miscinit.c:476
FormData_pg_database * Form_pg_database
Definition: pg_database.h:81
PGPROC * MyProc
Definition: proc.c:68
static HeapTuple GetDatabaseTuple(const char *dbname)
Definition: postinit.c:96
ResourceOwner CurrentResourceOwner
Definition: resowner.c:144
void CommitTransactionCommand(void)
Definition: xact.c:2948
void ReleaseAuxProcessResources(bool isCommit)
Definition: resowner.c:896
void InitializeSession(void)
Definition: session.c:54
void ValidatePgVersion(const char *path)
Definition: miscinit.c:1528
void RelationCacheInitializePhase2(void)
Definition: relcache.c:3813
static void PerformAuthentication(Port *port)
Definition: postinit.c:185
static void LockTimeoutHandler(void)
Definition: postinit.c:1221
int errcode(int sqlerrcode)
Definition: elog.c:704
bool superuser(void)
Definition: superuser.c:46
void initialize_acl(void)
Definition: acl.c:4672
bool RecoveryInProgress(void)
Definition: xlog.c:8148
Snapshot GetTransactionSnapshot(void)
Definition: snapmgr.c:250
#define OidIsValid(objectId)
Definition: c.h:698
Oid GetSessionUserId(void)
Definition: miscinit.c:510
bool HaveNFreeProcs(int n)
Definition: proc.c:667
static void CheckMyDatabase(const char *name, bool am_superuser, bool override_allow_connections)
Definition: postinit.c:306
bool IsBinaryUpgrade
Definition: globals.c:111
Oid MyDatabaseTableSpace
Definition: globals.c:88
bool IsBackgroundWorker
Definition: globals.c:112
void RelationCacheInitializePhase3(void)
Definition: relcache.c:3872
#define NAMEDATALEN
bool am_walsender
Definition: walsender.c:115
void pg_usleep(long microsec)
Definition: signal.c:53
int ReservedBackends
Definition: postmaster.c:216
#define FATAL
Definition: elog.h:54
void InitializeSearchPath(void)
Definition: namespace.c:4323
int MaxBackends
Definition: globals.c:137
void on_shmem_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:361
bool IsUnderPostmaster
Definition: globals.c:110
#define RowExclusiveLock
Definition: lockdefs.h:38
int errdetail(const char *fmt,...)
Definition: elog.c:1048
int errcode_for_file_access(void)
Definition: elog.c:727
static void IdleInTransactionSessionTimeoutHandler(void)
Definition: postinit.c:1231
void before_shmem_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:333
Oid databaseId
Definition: proc.h:154
void pgstat_initialize(void)
Definition: pgstat.c:3096
static bool ThereIsAtLeastOneRole(void)
Definition: postinit.c:1250
void StartupXLOG(void)
Definition: xlog.c:6377
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:3394
void InvalidateCatalogSnapshot(void)
Definition: snapmgr.c:456
char * GetDatabasePath(Oid dbNode, Oid spcNode)
Definition: relpath.c:110
void SetDatabasePath(const char *path)
Definition: miscinit.c:289
#define WARNING
Definition: elog.h:40
void ShutdownXLOG(int code, Datum arg)
Definition: xlog.c:8564
static HeapTuple GetDatabaseTupleByOid(Oid dboid)
Definition: postinit.c:139
#define InvalidBackendId
Definition: backendid.h:23
bool am_db_walsender
Definition: walsender.c:118
Oid MyDatabaseId
Definition: globals.c:86
int PostAuthDelay
Definition: postgres.c:103
void LockSharedObject(Oid classid, Oid objid, uint16 objsubid, LOCKMODE lockmode)
Definition: lmgr.c:1017
void EnablePortalManager(void)
Definition: portalmem.c:104
static void ShutdownPostgres(int code, Datum arg)
Definition: postinit.c:1182
static char * username
Definition: initdb.c:134
#define ereport(elevel,...)
Definition: elog.h:155
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:469
bool IsAutoVacuumLauncherProcess(void)
Definition: autovacuum.c:3388
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define Assert(condition)
Definition: c.h:792
void InitializeSessionUserIdStandalone(void)
Definition: miscinit.c:778
void StartTransactionCommand(void)
Definition: xact.c:2847
void CreateAuxProcessResourceOwner(void)
Definition: resowner.c:875
#define XACT_READ_COMMITTED
Definition: xact.h:37
static void IdleSessionTimeoutHandler(void)
Definition: postinit.c:1239
void InitializeSessionUserId(const char *rolename, Oid roleid)
Definition: miscinit.c:675
char * dbname
Definition: streamutil.c:51
static void process_startup_options(Port *port, bool am_superuser)
Definition: postinit.c:1083
int XactIsoLevel
Definition: xact.c:75
bool has_rolreplication(Oid roleid)
Definition: miscinit.c:657
void InitializeClientEncoding(void)
Definition: mbutils.c:281
void InitPlanCache(void)
Definition: plancache.c:127
void InitProcessPhase2(void)
Definition: proc.c:477
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:394
void RelationCacheInitialize(void)
Definition: relcache.c:3777
void ProcSignalInit(int pss_idx)
Definition: procsignal.c:157
void InitCatalogCache(void)
Definition: syscache.c:1021
static void StatementTimeoutHandler(void)
Definition: postinit.c:1199
void SetCurrentStatementStartTimestamp(void)
Definition: xact.c:833
int errmsg(const char *fmt,...)
Definition: elog.c:915
void pgstat_bestart(void)
Definition: pgstat.c:3145
#define elog(elevel,...)
Definition: elog.h:228
#define NameStr(name)
Definition: c.h:669
static void process_settings(Oid databaseid, Oid roleid)
Definition: postinit.c:1148
void CheckDeadLockAlert(void)
Definition: proc.c:1841
void InitBufferPoolBackend(void)
Definition: bufmgr.c:2537

◆ InitPostmasterChild()

void InitPostmasterChild ( void  )

Definition at line 93 of file miscinit.c.

References BlockSig, elog, FATAL, InitializeLatchSupport(), InitializeLatchWaitSet(), InitLatch(), InitProcessGlobals(), IsUnderPostmaster, LocalLatchData, MyLatch, on_exit_reset(), PG_SETMASK, PostmasterDeathSignalInit(), pqinitmask(), pqsignal(), set_stack_base(), SignalHandlerForCrashExit(), and SIGQUIT.

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

94 {
95  IsUnderPostmaster = true; /* we are a postmaster subprocess now */
96 
97  /*
98  * Set reference point for stack-depth checking. We re-do that even in the
99  * !EXEC_BACKEND case, because there are some edge cases where processes
100  * are started with an alternative stack (e.g. starting bgworkers when
101  * running postgres using the rr debugger, as bgworkers are launched from
102  * signal handlers).
103  */
104  set_stack_base();
105 
107 
108  /*
109  * make sure stderr is in binary mode before anything can possibly be
110  * written to it, in case it's actually the syslogger pipe, so the pipe
111  * chunking protocol isn't disturbed. Non-logpipe data gets translated on
112  * redirection (e.g. via pg_ctl -l) anyway.
113  */
114 #ifdef WIN32
115  _setmode(fileno(stderr), _O_BINARY);
116 #endif
117 
118  /* We don't want the postmaster's proc_exit() handlers */
119  on_exit_reset();
120 
121  /* Initialize process-local latch support */
126 
127  /*
128  * If possible, make this process a group leader, so that the postmaster
129  * can signal any child processes too. Not all processes will have
130  * children, but for consistency we make all postmaster child processes do
131  * this.
132  */
133 #ifdef HAVE_SETSID
134  if (setsid() < 0)
135  elog(FATAL, "setsid() failed: %m");
136 #endif
137 
138  /* In EXEC_BACKEND case we will not have inherited BlockSig etc values */
139 #ifdef EXEC_BACKEND
140  pqinitmask();
141 #endif
142 
143  /*
144  * Every postmaster child process is expected to respond promptly to
145  * SIGQUIT at all times. Therefore we centrally remove SIGQUIT from
146  * BlockSig and install a suitable signal handler. (Client-facing
147  * processes may choose to replace this default choice of handler with
148  * quickdie().) All other blockable signals remain blocked for now.
149  */
151 
152  sigdelset(&BlockSig, SIGQUIT);
154 
155  /* Request a signal if the postmaster dies, if possible. */
157 }
pg_stack_base_t set_stack_base(void)
Definition: postgres.c:3324
#define SIGQUIT
Definition: win32_port.h:160
void InitLatch(Latch *latch)
Definition: latch.c:274
void InitProcessGlobals(void)
Definition: postmaster.c:2616
#define PG_SETMASK(mask)
Definition: pqsignal.h:19
void pqinitmask(void)
Definition: pqsignal.c:41
void SignalHandlerForCrashExit(SIGNAL_ARGS)
Definition: interrupt.c:72
void on_exit_reset(void)
Definition: ipc.c:412
static Latch LocalLatchData
Definition: miscinit.c:67
#define FATAL
Definition: elog.h:54
bool IsUnderPostmaster
Definition: globals.c:110
sigset_t BlockSig
Definition: pqsignal.c:22
void InitializeLatchSupport(void)
Definition: latch.c:175
pqsigfunc pqsignal(int signum, pqsigfunc handler)
Definition: signal.c:170
void InitializeLatchWaitSet(void)
Definition: latch.c:253
#define elog(elevel,...)
Definition: elog.h:228
struct Latch * MyLatch
Definition: globals.c:55
void PostmasterDeathSignalInit(void)
Definition: pmsignal.c:405

◆ InitStandaloneProcess()

void InitStandaloneProcess ( const char *  argv0)

Definition at line 165 of file miscinit.c.

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

Referenced by AuxiliaryProcessMain(), and PostgresMain().

166 {
168 
170 
171  /* Initialize process-local latch support */
176 
177  /*
178  * For consistency with InitPostmasterChild, initialize signal mask here.
179  * But we don't unblock SIGQUIT or provide a default handler for it.
180  */
181  pqinitmask();
183 
184  /* Compute paths, no postmaster to inherit from */
185  if (my_exec_path[0] == '\0')
186  {
187  if (find_my_exec(argv0, my_exec_path) < 0)
188  elog(FATAL, "%s: could not locate my own executable path",
189  argv0);
190  }
191 
192  if (pkglib_path[0] == '\0')
194 }
bool IsPostmasterEnvironment
Definition: globals.c:109
static char * argv0
Definition: pg_ctl.c:97
void InitLatch(Latch *latch)
Definition: latch.c:274
void InitProcessGlobals(void)
Definition: postmaster.c:2616
void get_pkglib_path(const char *my_exec_path, char *ret_path)
Definition: path.c:758
#define PG_SETMASK(mask)
Definition: pqsignal.h:19
void pqinitmask(void)
Definition: pqsignal.c:41
static Latch LocalLatchData
Definition: miscinit.c:67
#define FATAL
Definition: elog.h:54
int find_my_exec(const char *argv0, char *retpath)
Definition: exec.c:128
char my_exec_path[MAXPGPATH]
Definition: globals.c:73
sigset_t BlockSig
Definition: pqsignal.c:22
void InitializeLatchSupport(void)
Definition: latch.c:175
#define Assert(condition)
Definition: c.h:792
void InitializeLatchWaitSet(void)
Definition: latch.c:253
#define elog(elevel,...)
Definition: elog.h:228
struct Latch * MyLatch
Definition: globals.c:55
char pkglib_path[MAXPGPATH]
Definition: globals.c:74

◆ InLocalUserIdChange()

bool InLocalUserIdChange ( void  )

Definition at line 599 of file miscinit.c.

References SECURITY_LOCAL_USERID_CHANGE, and SecurityRestrictionContext.

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

600 {
602 }
static int SecurityRestrictionContext
Definition: miscinit.c:465
#define SECURITY_LOCAL_USERID_CHANGE
Definition: miscadmin.h:299

◆ InNoForceRLSOperation()

bool InNoForceRLSOperation ( void  )

Definition at line 617 of file miscinit.c.

References SECURITY_NOFORCE_RLS, and SecurityRestrictionContext.

Referenced by check_enable_rls().

618 {
620 }
static int SecurityRestrictionContext
Definition: miscinit.c:465
#define SECURITY_NOFORCE_RLS
Definition: miscadmin.h:301

◆ InSecurityRestrictedOperation()

bool InSecurityRestrictedOperation ( void  )

◆ pg_bindtextdomain()

void pg_bindtextdomain ( const char *  domain)

Definition at line 1681 of file miscinit.c.

References get_locale_path(), MAXPGPATH, and my_exec_path.

Referenced by _PG_init().

1682 {
1683 #ifdef ENABLE_NLS
1684  if (my_exec_path[0] != '\0')
1685  {
1686  char locale_path[MAXPGPATH];
1687 
1688  get_locale_path(my_exec_path, locale_path);
1689  bindtextdomain(domain, locale_path);
1690  pg_bind_textdomain_codeset(domain);
1691  }
1692 #endif
1693 }
#define MAXPGPATH
char my_exec_path[MAXPGPATH]
Definition: globals.c:73
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 456 of file postinit.c.

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

Referenced by process_startup_options().

457 {
458  StringInfoData s;
459 
460  initStringInfo(&s);
461 
462  while (*optstr)
463  {
464  bool last_was_escape = false;
465 
466  resetStringInfo(&s);
467 
468  /* skip over leading space */
469  while (isspace((unsigned char) *optstr))
470  optstr++;
471 
472  if (*optstr == '\0')
473  break;
474 
475  /*
476  * Parse a single option, stopping at the first space, unless it's
477  * escaped.
478  */
479  while (*optstr)
480  {
481  if (isspace((unsigned char) *optstr) && !last_was_escape)
482  break;
483 
484  if (!last_was_escape && *optstr == '\\')
485  last_was_escape = true;
486  else
487  {
488  last_was_escape = false;
489  appendStringInfoChar(&s, *optstr);
490  }
491 
492  optstr++;
493  }
494 
495  /* now store the option in the next argv[] position */
496  argv[(*argcp)++] = pstrdup(s.data);
497  }
498 
499  pfree(s.data);
500 }
char * pstrdup(const char *in)
Definition: mcxt.c:1187
void pfree(void *pointer)
Definition: mcxt.c:1057
void resetStringInfo(StringInfo str)
Definition: stringinfo.c:75
void appendStringInfoChar(StringInfo str, char ch)
Definition: stringinfo.c:188
void initStringInfo(StringInfo str)
Definition: stringinfo.c:59

◆ PreventCommandDuringRecovery()

void PreventCommandDuringRecovery ( const char *  cmdname)

Definition at line 445 of file utility.c.

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

Referenced by pg_current_xact_id(), pg_notify(), and standard_ProcessUtility().

446 {
447  if (RecoveryInProgress())
448  ereport(ERROR,
449  (errcode(ERRCODE_READ_ONLY_SQL_TRANSACTION),
450  /* translator: %s is name of a SQL command, eg CREATE */
451  errmsg("cannot execute %s during recovery",
452  cmdname)));
453 }
int errcode(int sqlerrcode)
Definition: elog.c:704
bool RecoveryInProgress(void)
Definition: xlog.c:8148
#define ERROR
Definition: elog.h:45
#define ereport(elevel,...)
Definition: elog.h:155
int errmsg(const char *fmt,...)
Definition: elog.c:915

◆ PreventCommandIfParallelMode()

void PreventCommandIfParallelMode ( const char *  cmdname)

Definition at line 426 of file utility.c.

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

Referenced by do_setval(), ExecCheckXactReadOnly(), nextval_internal(), and standard_ProcessUtility().

427 {
428  if (IsInParallelMode())
429  ereport(ERROR,
430  (errcode(ERRCODE_INVALID_TRANSACTION_STATE),
431  /* translator: %s is name of a SQL command, eg CREATE */
432  errmsg("cannot execute %s during a parallel operation",
433  cmdname)));
434 }
int errcode(int sqlerrcode)
Definition: elog.c:704
bool IsInParallelMode(void)
Definition: xact.c:1012
#define ERROR
Definition: elog.h:45
#define ereport(elevel,...)
Definition: elog.h:155
int errmsg(const char *fmt,...)
Definition: elog.c:915

◆ PreventCommandIfReadOnly()

void PreventCommandIfReadOnly ( const char *  cmdname)

Definition at line 408 of file utility.c.

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

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

409 {
410  if (XactReadOnly)
411  ereport(ERROR,
412  (errcode(ERRCODE_READ_ONLY_SQL_TRANSACTION),
413  /* translator: %s is name of a SQL command, eg CREATE */
414  errmsg("cannot execute %s in a read-only transaction",
415  cmdname)));
416 }
int errcode(int sqlerrcode)
Definition: elog.c:704
#define ERROR
Definition: elog.h:45
#define ereport(elevel,...)
Definition: elog.h:155
bool XactReadOnly
Definition: xact.c:78
int errmsg(const char *fmt,...)
Definition: elog.c:915

◆ process_session_preload_libraries()

void process_session_preload_libraries ( void  )

Definition at line 1670 of file miscinit.c.

References load_libraries(), local_preload_libraries_string, and session_preload_libraries_string.

Referenced by PostgresMain().

1671 {
1673  "session_preload_libraries",
1674  false);
1676  "local_preload_libraries",
1677  true);
1678 }
static void load_libraries(const char *libraries, const char *gucname, bool restricted)
Definition: miscinit.c:1605
char * local_preload_libraries_string
Definition: miscinit.c:1593
char * session_preload_libraries_string
Definition: miscinit.c:1591

◆ process_shared_preload_libraries()

void process_shared_preload_libraries ( void  )

Definition at line 1657 of file miscinit.c.

References load_libraries(), process_shared_preload_libraries_in_progress, and shared_preload_libraries_string.

Referenced by BackendRun(), and PostmasterMain().

1658 {
1661  "shared_preload_libraries",
1662  false);
1664 }
bool process_shared_preload_libraries_in_progress
Definition: miscinit.c:1596
char * shared_preload_libraries_string
Definition: miscinit.c:1592
static void load_libraries(const char *libraries, const char *gucname, bool restricted)
Definition: miscinit.c:1605

◆ ProcessInterrupts()

void ProcessInterrupts ( void  )

Definition at line 3065 of file postgres.c.

References Assert, BackgroundWorker::bgw_type, 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, IdleSessionTimeout, IdleSessionTimeoutPending, InterruptHoldoffCount, InterruptPending, IsAutoVacuumWorkerProcess(), IsBackgroundWorker, IsLogicalLauncher(), IsLogicalWorker(), LOCK_TIMEOUT, LockErrorCleanup(), MyBgworkerEntry, ParallelMessagePending, pgstat_report_recovery_conflict(), proc_exit(), ProcDiePending, ProcessProcSignalBarrier(), PROCSIG_RECOVERY_CONFLICT_DATABASE, ProcSignalBarrierPending, QueryCancelHoldoffCount, QueryCancelPending, RecoveryConflictPending, RecoveryConflictReason, RecoveryConflictRetryable, STATEMENT_TIMEOUT, and whereToSendOutput.

Referenced by die().

3066 {
3067  /* OK to accept any interrupts now? */
3068  if (InterruptHoldoffCount != 0 || CritSectionCount != 0)
3069  return;
3070  InterruptPending = false;
3071 
3072  if (ProcDiePending)
3073  {
3074  ProcDiePending = false;
3075  QueryCancelPending = false; /* ProcDie trumps QueryCancel */
3076  LockErrorCleanup();
3077  /* As in quickdie, don't risk sending to client during auth */
3081  ereport(FATAL,
3082  (errcode(ERRCODE_QUERY_CANCELED),
3083  errmsg("canceling authentication due to timeout")));
3084  else if (IsAutoVacuumWorkerProcess())
3085  ereport(FATAL,
3086  (errcode(ERRCODE_ADMIN_SHUTDOWN),
3087  errmsg("terminating autovacuum process due to administrator command")));
3088  else if (IsLogicalWorker())
3089  ereport(FATAL,
3090  (errcode(ERRCODE_ADMIN_SHUTDOWN),
3091  errmsg("terminating logical replication worker due to administrator command")));
3092  else if (IsLogicalLauncher())
3093  {
3094  ereport(DEBUG1,
3095  (errmsg("logical replication launcher shutting down")));
3096 
3097  /*
3098  * The logical replication launcher can be stopped at any time.
3099  * Use exit status 1 so the background worker is restarted.
3100  */
3101  proc_exit(1);
3102  }
3104  {
3106  ereport(FATAL,
3107  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
3108  errmsg("terminating connection due to conflict with recovery"),
3110  }
3111  else if (RecoveryConflictPending)
3112  {
3113  /* Currently there is only one non-retryable recovery conflict */
3116  ereport(FATAL,
3117  (errcode(ERRCODE_DATABASE_DROPPED),
3118  errmsg("terminating connection due to conflict with recovery"),
3120  }
3121  else if (IsBackgroundWorker)
3122  ereport(FATAL,
3123  (errcode(ERRCODE_ADMIN_SHUTDOWN),
3124  errmsg("terminating background worker \"%s\" due to administrator command",
3126  else
3127  ereport(FATAL,
3128  (errcode(ERRCODE_ADMIN_SHUTDOWN),
3129  errmsg("terminating connection due to administrator command")));
3130  }
3132  {
3133  QueryCancelPending = false; /* lost connection trumps QueryCancel */
3134  LockErrorCleanup();
3135  /* don't send to client, we already know the connection to be dead. */
3137  ereport(FATAL,
3138  (errcode(ERRCODE_CONNECTION_FAILURE),
3139  errmsg("connection to client lost")));
3140  }
3141 
3142  /*
3143  * If a recovery conflict happens while we are waiting for input from the
3144  * client, the client is presumably just sitting idle in a transaction,
3145  * preventing recovery from making progress. Terminate the connection to
3146  * dislodge it.
3147  */
3149  {
3150  QueryCancelPending = false; /* this trumps QueryCancel */
3151  RecoveryConflictPending = false;
3152  LockErrorCleanup();
3154  ereport(FATAL,
3155  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
3156  errmsg("terminating connection due to conflict with recovery"),
3158  errhint("In a moment you should be able to reconnect to the"
3159  " database and repeat your command.")));
3160  }
3161 
3162  /*
3163  * Don't allow query cancel interrupts while reading input from the
3164  * client, because we might lose sync in the FE/BE protocol. (Die
3165  * interrupts are OK, because we won't read any further messages from the
3166  * client in that case.)
3167  */
3169  {
3170  /*
3171  * Re-arm InterruptPending so that we process the cancel request as
3172  * soon as we're done reading the message.
3173  */
3174  InterruptPending = true;
3175  }
3176  else if (QueryCancelPending)
3177  {
3178  bool lock_timeout_occurred;
3179  bool stmt_timeout_occurred;
3180 
3181  QueryCancelPending = false;
3182 
3183  /*
3184  * If LOCK_TIMEOUT and STATEMENT_TIMEOUT indicators are both set, we
3185  * need to clear both, so always fetch both.
3186  */
3187  lock_timeout_occurred = get_timeout_indicator(LOCK_TIMEOUT, true);
3188  stmt_timeout_occurred = get_timeout_indicator(STATEMENT_TIMEOUT, true);
3189 
3190  /*
3191  * If both were set, we want to report whichever timeout completed
3192  * earlier; this ensures consistent behavior if the machine is slow
3193  * enough that the second timeout triggers before we get here. A tie
3194  * is arbitrarily broken in favor of reporting a lock timeout.
3195  */
3196  if (lock_timeout_occurred && stmt_timeout_occurred &&
3198  lock_timeout_occurred = false; /* report stmt timeout */
3199 
3200  if (lock_timeout_occurred)
3201  {
3202  LockErrorCleanup();
3203  ereport(ERROR,
3204  (errcode(ERRCODE_LOCK_NOT_AVAILABLE),
3205  errmsg("canceling statement due to lock timeout")));
3206  }
3207  if (stmt_timeout_occurred)
3208  {
3209  LockErrorCleanup();
3210  ereport(ERROR,
3211  (errcode(ERRCODE_QUERY_CANCELED),
3212  errmsg("canceling statement due to statement timeout")));
3213  }
3215  {
3216  LockErrorCleanup();
3217  ereport(ERROR,
3218  (errcode(ERRCODE_QUERY_CANCELED),
3219  errmsg("canceling autovacuum task")));
3220  }
3222  {
3223  RecoveryConflictPending = false;
3224  LockErrorCleanup();
3226  ereport(ERROR,
3227  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
3228  errmsg("canceling statement due to conflict with recovery"),
3230  }
3231 
3232  /*
3233  * If we are reading a command from the client, just ignore the cancel
3234  * request --- sending an extra error message won't accomplish
3235  * anything. Otherwise, go ahead and throw the error.
3236  */
3237  if (!DoingCommandRead)
3238  {
3239  LockErrorCleanup();
3240  ereport(ERROR,
3241  (errcode(ERRCODE_QUERY_CANCELED),
3242  errmsg("canceling statement due to user request")));
3243  }
3244  }
3245 
3247  {
3248  /*
3249  * If the GUC has been reset to zero, ignore the signal. This is
3250  * important because the GUC update itself won't disable any pending
3251  * interrupt.
3252  */
3254  ereport(FATAL,
3255  (errcode(ERRCODE_IDLE_IN_TRANSACTION_SESSION_TIMEOUT),
3256  errmsg("terminating connection due to idle-in-transaction timeout")));
3257  else
3259  }
3260 
3262  {
3263  /* As above, ignore the signal if the GUC has been reset to zero. */
3264  if (IdleSessionTimeout > 0)
3265  ereport(FATAL,
3266  (errcode(ERRCODE_IDLE_SESSION_TIMEOUT),
3267  errmsg("terminating connection due to idle-session timeout")));
3268  else
3269  IdleSessionTimeoutPending = false;
3270  }
3271 
3274 
3277 }
volatile uint32 InterruptHoldoffCount
Definition: globals.c:37
TimestampTz get_timeout_finish_time(TimeoutId id)
Definition: timeout.c:763
volatile sig_atomic_t QueryCancelPending
Definition: globals.c:31
#define DEBUG1
Definition: elog.h:25
int errhint(const char *fmt,...)
Definition: elog.c:1162
void pgstat_report_recovery_conflict(int reason)
Definition: pgstat.c:1681
void ProcessProcSignalBarrier(void)
Definition: procsignal.c:464
volatile sig_atomic_t IdleSessionTimeoutPending
Definition: globals.c:35
volatile uint32 QueryCancelHoldoffCount
Definition: globals.c:38
void proc_exit(int code)
Definition: ipc.c:104
int errcode(int sqlerrcode)
Definition: elog.c:704
BackgroundWorker * MyBgworkerEntry
Definition: postmaster.c:194
bool IsLogicalWorker(void)
Definition: worker.c:3111
bool IsBackgroundWorker
Definition: globals.c:112
int IdleSessionTimeout
Definition: proc.c:64
volatile bool ParallelMessagePending
Definition: parallel.c:115
bool ClientAuthInProgress
Definition: postmaster.c:362
#define ERROR
Definition: elog.h:45
int IdleInTransactionSessionTimeout
Definition: proc.c:63
#define FATAL
Definition: elog.h:54
void HandleParallelMessages(void)
Definition: parallel.c:1003
Definition: dest.h:89
volatile sig_atomic_t ClientConnectionLost
Definition: globals.c:33
volatile uint32 CritSectionCount
Definition: globals.c:39
volatile sig_atomic_t IdleInTransactionSessionTimeoutPending
Definition: globals.c:34
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:3394
void LockErrorCleanup(void)
Definition: proc.c:707
static ProcSignalReason RecoveryConflictReason
Definition: postgres.c:165
static bool RecoveryConflictPending
Definition: postgres.c:163
static bool RecoveryConflictRetryable
Definition: postgres.c:164
bool get_timeout_indicator(TimeoutId id, bool reset_indicator)
Definition: timeout.c:729
static int errdetail_recovery_conflict(void)
Definition: postgres.c:2453
#define ereport(elevel,...)
Definition: elog.h:155
#define Assert(condition)
Definition: c.h:792
volatile sig_atomic_t ProcDiePending
Definition: globals.c:32
volatile sig_atomic_t ProcSignalBarrierPending
Definition: globals.c:36
static bool DoingCommandRead
Definition: postgres.c:141
volatile sig_atomic_t InterruptPending
Definition: globals.c:30
char bgw_type[BGW_MAXLEN]
Definition: bgworker.h:91
int errmsg(const char *fmt,...)
Definition: elog.c:915
bool IsLogicalLauncher(void)
Definition: launcher.c:1066
CommandDest whereToSendOutput
Definition: postgres.c:92

◆ RecheckDataDirLockFile()

bool RecheckDataDirLockFile ( void  )

Definition at line 1456 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().

1457 {
1458  int fd;
1459  int len;
1460  long file_pid;
1461  char buffer[BLCKSZ];
1462 
1463  fd = open(DIRECTORY_LOCK_FILE, O_RDWR | PG_BINARY, 0);
1464  if (fd < 0)
1465  {
1466  /*
1467  * There are many foreseeable false-positive error conditions. For
1468  * safety, fail only on enumerated clearly-something-is-wrong
1469  * conditions.
1470  */
1471  switch (errno)
1472  {
1473  case ENOENT:
1474  case ENOTDIR:
1475  /* disaster */
1476  ereport(LOG,
1478  errmsg("could not open file \"%s\": %m",
1480  return false;
1481  default:
1482  /* non-fatal, at least for now */
1483  ereport(LOG,
1485  errmsg("could not open file \"%s\": %m; continuing anyway",
1487  return true;
1488  }
1489  }
1491  len = read(fd, buffer, sizeof(buffer) - 1);
1493  if (len < 0)
1494  {
1495  ereport(LOG,
1497  errmsg("could not read from file \"%s\": %m",
1499  close(fd);
1500  return true; /* treat read failure as nonfatal */
1501  }
1502  buffer[len] = '\0';
1503  close(fd);
1504  file_pid = atol(buffer);
1505  if (file_pid == getpid())
1506  return true; /* all is well */
1507 
1508  /* Trouble: someone's overwritten the lock file */
1509  ereport(LOG,
1510  (errmsg("lock file \"%s\" contains wrong PID: %ld instead of %ld",
1511  DIRECTORY_LOCK_FILE, file_pid, (long) getpid())));
1512  return false;
1513 }
#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:1259
int errcode_for_file_access(void)
Definition: elog.c:727
static void pgstat_report_wait_end(void)
Definition: pgstat.h:1512
#define ereport(elevel,...)
Definition: elog.h:155
static void pgstat_report_wait_start(uint32 wait_event_info)
Definition: pgstat.h:1488
int errmsg(const char *fmt,...)
Definition: elog.c:915
#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 3355 of file postgres.c.

References stack_base_ptr.

3356 {
3357 #if defined(__ia64__) || defined(__ia64)
3358  stack_base_ptr = base.stack_base_ptr;
3359  register_stack_base_ptr = base.register_stack_base_ptr;
3360 #else
3361  stack_base_ptr = base;
3362 #endif
3363 }
char * stack_base_ptr
Definition: postgres.c:121

◆ set_stack_base()

pg_stack_base_t set_stack_base ( void  )

Definition at line 3324 of file postgres.c.

References stack_base_ptr.

Referenced by InitPostmasterChild(), and PostmasterMain().

3325 {
3326  char stack_base;
3327  pg_stack_base_t old;
3328 
3329 #if defined(__ia64__) || defined(__ia64)
3330  old.stack_base_ptr = stack_base_ptr;
3331  old.register_stack_base_ptr = register_stack_base_ptr;
3332 #else
3333  old = stack_base_ptr;
3334 #endif
3335 
3336  /* Set up reference point for stack depth checking */
3337  stack_base_ptr = &stack_base;
3338 #if defined(__ia64__) || defined(__ia64)
3339  register_stack_base_ptr = ia64_get_bsp();
3340 #endif
3341 
3342  return old;
3343 }
char * stack_base_ptr
Definition: postgres.c:121
char * pg_stack_base_t
Definition: miscadmin.h:276

◆ SetCurrentRoleId()

void SetCurrentRoleId ( Oid  roleid,
bool  is_superuser 
)

Definition at line 856 of file miscinit.c.

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

Referenced by assign_role(), and ParallelWorkerMain().

857 {
858  /*
859  * Get correct info if it's SET ROLE NONE
860  *
861  * If SessionUserId hasn't been set yet, just do nothing --- the eventual
862  * SetSessionUserId call will fix everything. This is needed since we
863  * will get called during GUC initialization.
864  */
865  if (!OidIsValid(roleid))
866  {
868  return;
869 
870  roleid = SessionUserId;
872 
873  SetRoleIsActive = false;
874  }
875  else
876  SetRoleIsActive = true;
877 
878  SetOuterUserId(roleid);
879 
880  SetConfigOption("is_superuser",
881  is_superuser ? "on" : "off",
883 }
static Oid SessionUserId
Definition: miscinit.c:457
static void SetOuterUserId(Oid userid)
Definition: miscinit.c:495
#define OidIsValid(objectId)
Definition: c.h:698
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:7879
static bool SetRoleIsActive
Definition: miscinit.c:468
static bool SessionUserIsSuperuser
Definition: miscinit.c:463
static bool is_superuser(Archive *fout)
Definition: pg_dump.c:4202

◆ SetDatabasePath()

void SetDatabasePath ( const char *  path)

Definition at line 289 of file miscinit.c.

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

Referenced by InitPostgres().

290 {
291  /* This should happen only once per process */
294 }
MemoryContext TopMemoryContext
Definition: mcxt.c:44
char * DatabasePath
Definition: globals.c:94
#define Assert(condition)
Definition: c.h:792
char * MemoryContextStrdup(MemoryContext context, const char *string)
Definition: mcxt.c:1174

◆ SetDataDir()

void SetDataDir ( const char *  dir)

Definition at line 395 of file miscinit.c.

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

Referenced by PostmasterMarkPIDForWorkerNotify(), and SelectConfigFiles().

396 {
397  char *new;
398 
399  AssertArg(dir);
400 
401  /* If presented path is relative, convert to absolute */
402  new = make_absolute_path(dir);
403 
404  if (DataDir)
405  free(DataDir);
406  DataDir = new;
407 }
char * make_absolute_path(const char *path)
Definition: path.c:608
#define AssertArg(condition)
Definition: c.h:794
#define free(a)
Definition: header.h:65
char * DataDir
Definition: globals.c:63

◆ SetSessionAuthorization()

void SetSessionAuthorization ( Oid  userid,
bool  is_superuser 
)

Definition at line 810 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().

811 {
812  /* Must have authenticated already, else can't make permission check */
814 
815  if (userid != AuthenticatedUserId &&
817  ereport(ERROR,
818  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
819  errmsg("permission denied to set session authorization")));
820 
822 
823  SetConfigOption("is_superuser",
824  is_superuser ? "on" : "off",
826 }
#define AssertState(condition)
Definition: c.h:795
int errcode(int sqlerrcode)
Definition: elog.c:704
#define OidIsValid(objectId)
Definition: c.h:698
#define ERROR
Definition: elog.h:45
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:7879
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:462
#define ereport(elevel,...)
Definition: elog.h:155
static bool is_superuser(Archive *fout)
Definition: pg_dump.c:4202
int errmsg(const char *fmt,...)
Definition: elog.c:915
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:518
static Oid AuthenticatedUserId
Definition: miscinit.c:456

◆ SetUserIdAndContext()

void SetUserIdAndContext ( Oid  userid,
bool  sec_def_context 
)

Definition at line 637 of file miscinit.c.

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

638 {
639  /* We throw the same error SET ROLE would. */
641  ereport(ERROR,
642  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
643  errmsg("cannot set parameter \"%s\" within security-restricted operation",
644  "role")));
645  CurrentUserId = userid;
646  if (sec_def_context)
648  else
650 }
int errcode(int sqlerrcode)
Definition: elog.c:704
#define ERROR
Definition: elog.h:45
static int SecurityRestrictionContext
Definition: miscinit.c:465
#define SECURITY_LOCAL_USERID_CHANGE
Definition: miscadmin.h:299
#define ereport(elevel,...)
Definition: elog.h:155
static Oid CurrentUserId
Definition: miscinit.c:459
bool InSecurityRestrictedOperation(void)
Definition: miscinit.c:608
int errmsg(const char *fmt,...)
Definition: elog.c:915

◆ SetUserIdAndSecContext()

void SetUserIdAndSecContext ( Oid  userid,
int  sec_context 
)

◆ stack_is_too_deep()

bool stack_is_too_deep ( void  )

Definition at line 3391 of file postgres.c.

References max_stack_depth_bytes, and stack_base_ptr.

Referenced by check_stack_depth(), and rstacktoodeep().

3392 {
3393  char stack_top_loc;
3394  long stack_depth;
3395 
3396  /*
3397  * Compute distance from reference point to my local variables
3398  */
3399  stack_depth = (long) (stack_base_ptr - &stack_top_loc);
3400 
3401  /*
3402  * Take abs value, since stacks grow up on some machines, down on others
3403  */
3404  if (stack_depth < 0)
3405  stack_depth = -stack_depth;
3406 
3407  /*
3408  * Trouble?
3409  *
3410  * The test on stack_base_ptr prevents us from erroring out if called
3411  * during process setup or in a non-backend process. Logically it should
3412  * be done first, but putting it here avoids wasting cycles during normal
3413  * cases.
3414  */
3415  if (stack_depth > max_stack_depth_bytes &&
3416  stack_base_ptr != NULL)
3417  return true;
3418 
3419  /*
3420  * On IA64 there is a separate "register" stack that requires its own
3421  * independent check. For this, we have to measure the change in the
3422  * "BSP" pointer from PostgresMain to here. Logic is just as above,
3423  * except that we know IA64's register stack grows up.
3424  *
3425  * Note we assume that the same max_stack_depth applies to both stacks.
3426  */
3427 #if defined(__ia64__) || defined(__ia64)
3428  stack_depth = (long) (ia64_get_bsp() - register_stack_base_ptr);
3429 
3430  if (stack_depth > max_stack_depth_bytes &&
3431  register_stack_base_ptr != NULL)
3432  return true;
3433 #endif /* IA64 */
3434 
3435  return false;
3436 }
static long max_stack_depth_bytes
Definition: postgres.c:113
char * stack_base_ptr
Definition: postgres.c:121

◆ superuser()

bool superuser ( void  )

Definition at line 46 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(), AlterType(), AlterTypeOwner(), ATExecChangeOwner(), brin_metapage_info(), brin_page_items(), brin_page_type(), brin_revmap_data(), bt_metap(), bt_page_items_bytea(), bt_page_items_internal(), bt_page_stats_internal(), 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(), gist_page_items(), gist_page_items_bytea(), gist_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(), heap_tuple_infomask_flags(), InitPostgres(), interpret_func_support(), main(), page_checksum_internal(), page_header(), pg_import_system_collations(), pg_logdir_ls(), pg_nextoid(), 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(), postgres_fdw_validator(), ProcedureCreate(), regress_setenv(), RenameRole(), requireSuperuser(), sepgsql_restorecon(), set_config_by_name(), SetPGVariable(), standard_ProcessUtility(), TerminateOtherDBBackends(), tuple_data_split(), validate_option_array_item(), and wait_pid().

47 {
48  return superuser_arg(GetUserId());
49 }
Oid GetUserId(void)
Definition: miscinit.c:476
bool superuser_arg(Oid roleid)
Definition: superuser.c:56

◆ superuser_arg()

bool superuser_arg ( Oid  roleid)

Definition at line 56 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(), superuser(), and TerminateOtherDBBackends().

57 {
58  bool result;
59  HeapTuple rtup;
60 
61  /* Quick out for cache hit */
62  if (OidIsValid(last_roleid) && last_roleid == roleid)
63  return last_roleid_is_super;
64 
65  /* Special escape path in case you deleted all your users. */
66  if (!IsUnderPostmaster && roleid == BOOTSTRAP_SUPERUSERID)
67  return true;
68 
69  /* OK, look up the information in pg_authid */
70  rtup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
71  if (HeapTupleIsValid(rtup))
72  {
73  result = ((Form_pg_authid) GETSTRUCT(rtup))->rolsuper;
74  ReleaseSysCache(rtup);
75  }
76  else
77  {
78  /* Report "not superuser" for invalid roleids */
79  result = false;
80  }
81 
82  /* If first time through, set up callback for cache flushes */
84  {
87  (Datum) 0);
89  }
90 
91  /* Cache the result for next time */
92  last_roleid = roleid;
93  last_roleid_is_super = result;
94 
95  return result;
96 }
static Oid last_roleid
Definition: superuser.c:35
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
#define OidIsValid(objectId)
Definition: c.h:698
static void RoleidCallback(Datum arg, int cacheid, uint32 hashvalue)
Definition: superuser.c:103
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:56
static bool last_roleid_is_super
Definition: superuser.c:36
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
bool IsUnderPostmaster
Definition: globals.c:110
bool rolsuper
Definition: pg_authid.h:35
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1127
void CacheRegisterSyscacheCallback(int cacheid, SyscacheCallbackFunction func, Datum arg)
Definition: inval.c:1434
uintptr_t Datum
Definition: postgres.h:367
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1175
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
static bool roleid_callback_registered
Definition: superuser.c:37

◆ SwitchBackToLocalLatch()

void SwitchBackToLocalLatch ( void  )

Definition at line 216 of file miscinit.c.

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

Referenced by AuxiliaryProcKill(), and ProcKill().

217 {
219  Assert(MyProc != NULL && MyLatch == &MyProc->procLatch);
220 
222 
223  if (FeBeWaitSet)
225 
226  SetLatch(MyLatch);
227 }
PGPROC * MyProc
Definition: proc.c:68
void ModifyWaitEvent(WaitEventSet *set, int pos, uint32 events, Latch *latch)
Definition: latch.c:887
WaitEventSet * FeBeWaitSet
Definition: pqcomm.c:184
void SetLatch(Latch *latch)
Definition: latch.c:505
Latch procLatch
Definition: proc.h:130
static Latch LocalLatchData
Definition: miscinit.c:67
#define Assert(condition)
Definition: c.h:792
struct Latch * MyLatch
Definition: globals.c:55
#define WL_LATCH_SET
Definition: latch.h:124

◆ SwitchToSharedLatch()

void SwitchToSharedLatch ( void  )

Definition at line 197 of file miscinit.c.

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

Referenced by InitAuxiliaryProcess(), and InitProcess().

198 {
200  Assert(MyProc != NULL);
201 
203 
204  if (FeBeWaitSet)
206 
207  /*
208  * Set the shared latch as the local one might have been set. This
209  * shouldn't normally be necessary as code is supposed to check the
210  * condition before waiting for the latch, but a bit care can't hurt.
211  */
212  SetLatch(MyLatch);
213 }
PGPROC * MyProc
Definition: proc.c:68
void ModifyWaitEvent(WaitEventSet *set, int pos, uint32 events, Latch *latch)
Definition: latch.c:887
WaitEventSet * FeBeWaitSet
Definition: pqcomm.c:184
void SetLatch(Latch *latch)
Definition: latch.c:505
Latch procLatch
Definition: proc.h:130
static Latch LocalLatchData
Definition: miscinit.c:67
#define Assert(condition)
Definition: c.h:792
struct Latch * MyLatch
Definition: globals.c:55
#define WL_LATCH_SET
Definition: latch.h:124

◆ TouchSocketLockFiles()

void TouchSocketLockFiles ( void  )

Definition at line 1300 of file miscinit.c.

References DIRECTORY_LOCK_FILE, and lfirst.

Referenced by ServerLoop().

1301 {
1302  ListCell *l;
1303 
1304  foreach(l, lock_files)
1305  {
1306  char *socketLockFile = (char *) lfirst(l);
1307 
1308  /* No need to touch the data directory lock file, we trust */
1309  if (strcmp(socketLockFile, DIRECTORY_LOCK_FILE) == 0)
1310  continue;
1311 
1312  /* we just ignore any error here */
1313  (void) utime(socketLockFile, NULL);
1314  }
1315 }
static List * lock_files
Definition: miscinit.c:65
#define DIRECTORY_LOCK_FILE
Definition: miscinit.c:58
#define lfirst(lc)
Definition: pg_list.h:169

◆ trace_recovery()

int trace_recovery ( int  trace_level)

Definition at line 3602 of file elog.c.

References LOG, and trace_recovery_messages.

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

3603 {
3604  if (trace_level < LOG &&
3605  trace_level >= trace_recovery_messages)
3606  return LOG;
3607 
3608  return trace_level;
3609 }
#define LOG
Definition: elog.h:26
int trace_recovery_messages
Definition: guc.c:549

◆ ValidatePgVersion()

void ValidatePgVersion ( const char *  path)

Definition at line 1528 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().

1529 {
1530  char full_path[MAXPGPATH];
1531  FILE *file;
1532  int ret;
1533  long file_major;
1534  long my_major;
1535  char *endptr;
1536  char file_version_string[64];
1537  const char *my_version_string = PG_VERSION;
1538 
1539  my_major = strtol(my_version_string, &endptr, 10);
1540 
1541  snprintf(full_path, sizeof(full_path), "%s/PG_VERSION", path);
1542 
1543  file = AllocateFile(full_path, "r");
1544  if (!file)
1545  {
1546  if (errno == ENOENT)
1547  ereport(FATAL,
1548  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1549  errmsg("\"%s\" is not a valid data directory",
1550  path),
1551  errdetail("File \"%s\" is missing.", full_path)));
1552  else
1553  ereport(FATAL,
1555  errmsg("could not open file \"%s\": %m", full_path)));
1556  }
1557 
1558  file_version_string[0] = '\0';
1559  ret = fscanf(file, "%63s", file_version_string);
1560  file_major = strtol(file_version_string, &endptr, 10);
1561 
1562  if (ret != 1 || endptr == file_version_string)
1563  ereport(FATAL,
1564  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1565  errmsg("\"%s\" is not a valid data directory",
1566  path),
1567  errdetail("File \"%s\" does not contain valid data.",
1568  full_path),
1569  errhint("You might need to initdb.")));
1570 
1571  FreeFile(file);
1572 
1573  if (my_major != file_major)
1574  ereport(FATAL,
1575  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1576  errmsg("database files are incompatible with server"),
1577  errdetail("The data directory was initialized by PostgreSQL version %s, "
1578  "which is not compatible with this version %s.",
1579  file_version_string, my_version_string)));
1580 }
int errhint(const char *fmt,...)
Definition: elog.c:1162
int errcode(int sqlerrcode)
Definition: elog.c:704
#define FATAL
Definition: elog.h:54
#define MAXPGPATH
int errdetail(const char *fmt,...)
Definition: elog.c:1048
int errcode_for_file_access(void)
Definition: elog.c:727
FILE * AllocateFile(const char *name, const char *mode)
Definition: fd.c:2354
#define ereport(elevel,...)
Definition: elog.h:155
int FreeFile(FILE *file)
Definition: fd.c:2553
int errmsg(const char *fmt,...)
Definition: elog.c:915
#define snprintf
Definition: port.h:215

Variable Documentation

◆ allowSystemTableMods

◆ ClientConnectionLost

PGDLLIMPORT volatile sig_atomic_t ClientConnectionLost

Definition at line 33 of file globals.c.

Referenced by internal_flush(), and ProcessInterrupts().

◆ CritSectionCount

◆ data_directory_mode

PGDLLIMPORT int data_directory_mode

Definition at line 69 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 114 of file globals.c.

Referenced by errstart(), and HandleCheckpointerInterrupts().

◆ hash_mem_multiplier

PGDLLIMPORT double hash_mem_multiplier

Definition at line 123 of file globals.c.

Referenced by get_hash_mem().

◆ IdleInTransactionSessionTimeoutPending

PGDLLIMPORT volatile sig_atomic_t IdleInTransactionSessionTimeoutPending

Definition at line 34 of file globals.c.

Referenced by IdleInTransactionSessionTimeoutHandler(), and ProcessInterrupts().

◆ IdleSessionTimeoutPending

PGDLLIMPORT volatile sig_atomic_t IdleSessionTimeoutPending

Definition at line 35 of file globals.c.

Referenced by IdleSessionTimeoutHandler(), 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 110 of file globals.c.

Referenced by _PG_init(), AdvanceNextFullTransactionIdPastXid(), AutoVacuumShmemInit(), AuxiliaryProcessMain(), BackgroundWorkerShmemInit(), bootstrap_signals(), BootstrapModeMain(), BTreeShmemInit(), CheckMyDatabase(), CheckRecoveryConsistency(), CommitTsShmemInit(), compute_parallel_vacuum_workers(), createdb(), CreateLWLocks(), CreateSharedMemoryAndSemaphores(), DebugFileOpen(), dsm_attach(), dsm_create(), dsm_postmaster_startup(), EventTriggerDDLCommandEnd(), EventTriggerDDLCommandStart(), EventTriggerSQLDrop(), EventTriggerTableRewrite(), ForwardSyncRequest(), GetNewMultiXactId(), GetNewTransactionId(), GetQuitSignalReason(), HandleStartupProcInterrupts(), init_ps_display(), InitCommunication(), InitializeLatchSupport(), InitializeLatchWaitSet(), InitializeSessionUserId(), InitializeSessionUserIdStandalone(), InitPostgres(), InitPostmasterChild(), InitPredicateLocks(), InitProcess(), InitSync(), LWLockAcquire(), MaintainLatestCompletedXidRecovery(), MultiXactShmemInit(), PGSemaphoreCreate(), PGSharedMemoryCreate(), PGSharedMemoryNoReAttach(), PGSharedMemoryReAttach(), pgss_shmem_startup(), plan_create_index_workers(), PostgresMain(), process_postgres_switches(), process_settings(), ProcKill(), readRecoverySignalFile(), RegisterBackgroundWorker(), RegisterDynamicBackgroundWorker(), ReplicationSlotAcquireInternal(), RequestAddinShmemSpace(), RequestNamedLWLockTranche(), SendPostmasterSignal(), SerialInit(), set_config_option(), set_config_sourcefile(), set_ps_display(), SetMultiXactIdLimit(), SetTransactionIdLimit(), ShmemInitStruct(), SimpleLruInit(), slru_entry(), standard_planner(), StartupXLOG(), superuser_arg(), SyncScanShmemInit(), TwoPhaseShmemInit(), verify_dictoptions(), WaitLatch(), WaitLatchOrSocket(), XLogArchiveNotify(), XLogRecGetFullXid(), and XLogWrite().

◆ local_preload_libraries_string

char* local_preload_libraries_string

Definition at line 1593 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 125 of file globals.c.

Referenced by compute_parallel_vacuum_workers(), and plan_create_index_workers().

◆ max_parallel_workers

PGDLLIMPORT int max_parallel_workers

Definition at line 136 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(), and pgstat_initialize().

◆ MyBackendType

◆ MyCancelKey

◆ MyDatabaseId

PGDLLIMPORT Oid MyDatabaseId

Definition at line 86 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(), check_default_table_access_method(), check_default_tablespace(), check_temp_tablespaces(), check_TSCurrentConfig(), CheckLogicalDecodingRequirements(), CheckMyDatabase(), checkSharedDependencies(), checkTempNamespaceStatus(), classIdGetDbId(), ComputeXidHorizons(), CreateDecodingContext(), CreateInitDecodingContext(), 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(), extension_is_trusted(), get_collation_version_for_oid(), get_subscription_oid(), GetCurrentVirtualXIDs(), GetNewRelFileNode(), heap_vacuum_rel(), IdentifySystem(), ImportSnapshot(), InitializeParallelDSM(), InitPostgres(), InitTempTableNamespace(), libpqrcv_exec(), LocalExecuteInvalidationMessage(), LockDatabaseFrozenIds(), 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_checksum_failure(), 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_connstats(), pgstat_send_funcstats(), pgstat_vacuum_stat(), PrepareToInvalidateCacheTuple(), PrepareTransaction(), ProcArrayInstallImportedXmin(), ProcArrayInstallRestoredXmin(), RangeVarGetAndCheckCreationNamespace(), RangeVarGetCreationNamespace(), RangeVarGetRelidExtended(), recheck_relation_needs_vacanalyze(), ReindexMultipleTables(), RelationInitLockInfo(), RelationInitPhysicalAddr(), RelationMapFinishBootstrap(), RenameDatabase(), RenameSchema(), ReplicationSlotCreate(), ScanPgRelation(), sepgsql_schema_post_create(), SetLocktagRelationOid(), shdepDropOwned(), shdepReassignOwned(), SignalBackends(), 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 55 of file globals.c.

Referenced by ApplyLauncherMain(), autoprewarm_main(), AutoVacLauncherMain(), avl_sigusr2_handler(), BackgroundWriterMain(), be_tls_open_server(), CheckDeadLockAlert(), CheckpointerMain(), ConditionVariableTimedSleep(), copy_read_data(), die(), gather_readnext(), handle_sig_alarm(), HandleCatchupInterrupt(), HandleNotifyInterrupt(), HandleParallelMessageInterrupt(), IdleInTransactionSessionTimeoutHandler(), IdleSessionTimeoutHandler(), initialize_worker_spi(), InitializeLatchWaitSet(), InitPostmasterChild(), InitStandaloneProcess(), libpqrcv_connect(), libpqrcv_PQgetResult(), logicalrep_worker_stop(), LogicalRepApplyLoop(), mq_putmessage(), pg_promote(), pg_sleep(), pgarch_MainLoop(), pgarch_waken(), pgarch_waken_stop(), pgfdw_get_cleanup_result(), pgfdw_get_result(), PgstatCollectorMain(), pq_init(), ProcessClientReadInterrupt(), ProcessClientWriteInterrupt(), procsignal_sigusr1_handler(), ProcSleep(), ProcWaitForSignal(), read_or_wait(), RecoveryConflictInterrupt(), ReqCheckpointHandler(), secure_open_gssapi(), secure_read(), secure_write(), shm_mq_receive_bytes(), shm_mq_send_bytes(), shm_mq_wait_internal(), SignalHandlerForConfigReload(), SignalHandlerForShutdownRequest(), 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(), WaitForProcSignalBarrier(), WaitForReplicationWorkerAttach(), WalRcvWaitForStartPosition(), WalReceiverMain(), WalSndLastCycleHandler(), WalSndLoop(), WalSndWaitForWal(), WalSndWriteData(), WalWriterMain(), and write_syslogger_file().

◆ MyPMChildSlot

◆ MyProcPid

PGDLLIMPORT int MyProcPid

Definition at line 41 of file globals.c.

Referenced by AddWaitEventToSet(), ApplyLauncherMain(), apw_detach_shmem(), apw_dump_now(), apw_load_buffers(), apw_start_database_worker(), apw_start_leader_worker(), Async_Listen(), Async_Unlisten(), Async_UnlistenAll(), asyncQueueNotificationToEntry(), asyncQueueReadAllNotifications(), autoprewarm_main(), AutoVacLauncherMain(), BackendRun(), CheckpointerMain(), CleanupProcSignalState(), DisownLatch(), drandom(), 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(), ModifyWaitEvent(), OpenTemporaryFileInTablespace(), OwnLatch(), ParallelWorkerMain(), pg_backend_pid(), pgstat_bestart(), PostgresMain(), PostmasterMain(), ProcSignalInit(), ProcSleep(), PublishStartupProcessInformation(), ReplicationOriginExitCleanup(), ReplicationSlotAcquireInternal(), 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

◆ NBuffers

PGDLLIMPORT int NBuffers

Definition at line 133 of file globals.c.

◆ OutputFileName

char OutputFileName[]

Definition at line 71 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

◆ ProcSignalBarrierPending

◆ QueryCancelHoldoffCount

PGDLLIMPORT volatile uint32 QueryCancelHoldoffCount

Definition at line 38 of file globals.c.

Referenced by errfinish(), and ProcessInterrupts().

◆ QueryCancelPending

◆ session_preload_libraries_string

char* session_preload_libraries_string

Definition at line 1591 of file miscinit.c.

Referenced by process_session_preload_libraries().

◆ shared_preload_libraries_string

char* shared_preload_libraries_string

Definition at line 1592 of file miscinit.c.

Referenced by process_shared_preload_libraries().

◆ trace_recovery_messages

int trace_recovery_messages

Definition at line 549 of file guc.c.

Referenced by StartupXLOG(), and trace_recovery().

◆ vacuum_cleanup_index_scale_factor

double vacuum_cleanup_index_scale_factor

Definition at line 152 of file globals.c.

Referenced by _bt_vacuum_needs_cleanup(), and btoptions().

◆ VacuumCostActive

◆ VacuumCostBalance

◆ VacuumCostDelay

◆ VacuumCostLimit

◆ VacuumCostPageDirty

int VacuumCostPageDirty

Definition at line 141 of file globals.c.

Referenced by MarkBufferDirty(), and MarkBufferDirtyHint().

◆ VacuumCostPageHit

int VacuumCostPageHit

Definition at line 139 of file globals.c.

Referenced by ReadBuffer_common().

◆ VacuumCostPageMiss

int VacuumCostPageMiss

Definition at line 140 of file globals.c.

Referenced by ReadBuffer_common().

◆ VacuumPageDirty

int64 VacuumPageDirty

◆ VacuumPageHit

int64 VacuumPageHit

Definition at line 145 of file globals.c.

Referenced by heap_vacuum_rel(), parallel_vacuum_main(), ReadBuffer_common(), and vacuum().

◆ VacuumPageMiss

int64 VacuumPageMiss

Definition at line 146 of file globals.c.

Referenced by heap_vacuum_rel(), parallel_vacuum_main(), ReadBuffer_common(), and vacuum().

◆ work_mem

PGDLLIMPORT int work_mem

Definition at line 122 of file globals.c.

Referenced by _bt_parallel_scan_and_sort(), _bt_spools_heapscan(), adjust_foreign_grouping_path_cost(), begin_partition(), brin_page_items(), choose_hashed_setop(), collectMatchBitmap(), compute_bitmap_pages(), connectby(), cost_append(), cost_material(), cost_rescan(), create_gather_merge_path(), create_groupingsets_path(), create_incremental_sort_path(), create_merge_append_path(), create_sort_path(), create_unique_path(), CreateWorkExprContext(), crosstab(), dblink_get_notify(), deflist_to_tuplestore(), each_worker(), each_worker_jsonb(), elements_worker(), elements_worker_jsonb(), exec_init_tuple_store(), ExecIncrementalSort(), ExecInitCteScan(), ExecInitRecursiveUnion(), ExecMakeTableFunctionResult(), ExecMaterial(), ExecRecursiveUnion(), ExecSort(), final_cost_mergejoin(), fmgr_sql(), get_crosstab_tuplestore(), get_hash_mem(), GetCurrentFDWTuplestore(), ginInsertCleanup(), gist_page_items(), gist_page_items_bytea(), initial_cost_mergejoin(), initialize_aggregate(), initialize_phase(), label_sort_with_costsize(), libpqrcv_processTuples(), MakeTransitionCaptureState(), 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_backend_memory_contexts(), pg_get_replication_slots(), pg_get_shmem_allocations(), pg_hba_file_rules(), pg_logdir_ls_internal(), pg_logical_slot_get_changes_guts(), pg_ls_dir(), pg_ls_dir_files(), pg_prepared_statement(), pg_show_replication_origin_status(), pg_stat_get_activity(), pg_stat_get_progress_info(), pg_stat_get_replication_slots(), pg_stat_get_slru(), pg_stat_get_subscription(), pg_stat_get_wal_senders(), pg_stat_statements_internal(), pg_stop_backup_v2(), pg_tablespace_databases(), pg_timezone_names(), pgrowlocks(), plperl_return_next_internal(), pltcl_init_tuple_store(), populate_recordset_worker(), PortalCreateHoldStore(), postgres_fdw_get_connections(), show_all_file_settings(), storeRow(), switchToPresortedPrefixMode(), text_to_table(), tfuncFetchRows(), verify_heapam(), and xpath_table().