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 AmArchiverProcess()   (MyAuxProcType == ArchiverProcess)
 
#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, ArchiverProcess, 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 LogMemoryContextPending
 
PGDLLIMPORT volatile sig_atomic_t CheckClientConnectionPending
 
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
 
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

◆ AmArchiverProcess

#define AmArchiverProcess ( )    (MyAuxProcType == ArchiverProcess)

Definition at line 435 of file miscadmin.h.

◆ AmBackgroundWriterProcess

#define AmBackgroundWriterProcess ( )    (MyAuxProcType == BgWriterProcess)

Definition at line 434 of file miscadmin.h.

Referenced by ForwardSyncRequest().

◆ AmBootstrapProcess

#define AmBootstrapProcess ( )    (MyAuxProcType == BootstrapProcess)

Definition at line 432 of file miscadmin.h.

◆ AmCheckpointerProcess

#define AmCheckpointerProcess ( )    (MyAuxProcType == CheckpointerProcess)

◆ AmStartupProcess

◆ AmWalReceiverProcess

#define AmWalReceiverProcess ( )    (MyAuxProcType == WalReceiverProcess)

Definition at line 438 of file miscadmin.h.

Referenced by get_sync_bit().

◆ AmWalWriterProcess

#define AmWalWriterProcess ( )    (MyAuxProcType == WalWriterProcess)

Definition at line 437 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:273

Definition at line 102 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(), count_nondeletable_pages(), CountOtherDBBackends(), db_dir_size(), DecodingContextFindStartpoint(), do_autovacuum(), do_des(), do_pg_stop_backup(), DoCopyTo(), dofindsubquery(), dsm_impl_op(), errfinish(), exec_execute_message(), exec_parse_message(), exec_replication_command(), exec_simple_query(), exec_stmts(), exec_toplevel_block(), ExecAgg(), ExecAppend(), ExecAppendAsyncGetNext(), 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(), pg_wait_until_termination(), 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(), WaitForReplicationWorkerAttach(), walkdir(), WalSndLoop(), WalSndWaitForWal(), WalSndWriteData(), and window_gettupleslot().

◆ DATEORDER_DMY

#define DATEORDER_DMY   1

◆ DATEORDER_MDY

#define DATEORDER_MDY   2

Definition at line 225 of file miscadmin.h.

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

◆ DATEORDER_YMD

#define DATEORDER_YMD   0

Definition at line 223 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:41

Definition at line 137 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_set_cleanup_info(), _bt_split(), _bt_unlink_halfdead_page(), _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_scan_prune(), lazy_vacuum_heap_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 127 of file miscadmin.h.

Referenced by CopyGetData(), and SocketBackend().

◆ HOLD_INTERRUPTS

◆ INTSTYLE_ISO_8601

#define INTSTYLE_ISO_8601   3

Definition at line 240 of file miscadmin.h.

Referenced by EncodeInterval().

◆ INTSTYLE_POSTGRES

#define INTSTYLE_POSTGRES   0

Definition at line 237 of file miscadmin.h.

Referenced by EncodeInterval(), and set_transmission_modes().

◆ INTSTYLE_POSTGRES_VERBOSE

#define INTSTYLE_POSTGRES_VERBOSE   1

Definition at line 238 of file miscadmin.h.

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

◆ INTSTYLE_SQL_STANDARD

#define INTSTYLE_SQL_STANDARD   2

Definition at line 239 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 244 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:40

Definition at line 129 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 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_set_cleanup_info(), _bt_split(), _bt_unlink_halfdead_page(), _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_scan_prune(), lazy_vacuum_heap_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 219 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 216 of file miscadmin.h.

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

◆ USE_SQL_DATES

#define USE_SQL_DATES   2

Definition at line 218 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 
ArchiverProcess 
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 1331 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().

1332 {
1333  int fd;
1334  int len;
1335  int lineno;
1336  char *srcptr;
1337  char *destptr;
1338  char srcbuffer[BLCKSZ];
1339  char destbuffer[BLCKSZ];
1340 
1341  fd = open(DIRECTORY_LOCK_FILE, O_RDWR | PG_BINARY, 0);
1342  if (fd < 0)
1343  {
1344  ereport(LOG,
1346  errmsg("could not open file \"%s\": %m",
1348  return;
1349  }
1351  len = read(fd, srcbuffer, sizeof(srcbuffer) - 1);
1353  if (len < 0)
1354  {
1355  ereport(LOG,
1357  errmsg("could not read from file \"%s\": %m",
1359  close(fd);
1360  return;
1361  }
1362  srcbuffer[len] = '\0';
1363 
1364  /*
1365  * Advance over lines we are not supposed to rewrite, then copy them to
1366  * destbuffer.
1367  */
1368  srcptr = srcbuffer;
1369  for (lineno = 1; lineno < target_line; lineno++)
1370  {
1371  char *eol = strchr(srcptr, '\n');
1372 
1373  if (eol == NULL)
1374  break; /* not enough lines in file yet */
1375  srcptr = eol + 1;
1376  }
1377  memcpy(destbuffer, srcbuffer, srcptr - srcbuffer);
1378  destptr = destbuffer + (srcptr - srcbuffer);
1379 
1380  /*
1381  * Fill in any missing lines before the target line, in case lines are
1382  * added to the file out of order.
1383  */
1384  for (; lineno < target_line; lineno++)
1385  {
1386  if (destptr < destbuffer + sizeof(destbuffer))
1387  *destptr++ = '\n';
1388  }
1389 
1390  /*
1391  * Write or rewrite the target line.
1392  */
1393  snprintf(destptr, destbuffer + sizeof(destbuffer) - destptr, "%s\n", str);
1394  destptr += strlen(destptr);
1395 
1396  /*
1397  * If there are more lines in the old file, append them to destbuffer.
1398  */
1399  if ((srcptr = strchr(srcptr, '\n')) != NULL)
1400  {
1401  srcptr++;
1402  snprintf(destptr, destbuffer + sizeof(destbuffer) - destptr, "%s",
1403  srcptr);
1404  }
1405 
1406  /*
1407  * And rewrite the data. Since we write in a single kernel call, this
1408  * update should appear atomic to onlookers.
1409  */
1410  len = strlen(destbuffer);
1411  errno = 0;
1413  if (pg_pwrite(fd, destbuffer, len, 0) != len)
1414  {
1416  /* if write didn't set errno, assume problem is no disk space */
1417  if (errno == 0)
1418  errno = ENOSPC;
1419  ereport(LOG,
1421  errmsg("could not write to file \"%s\": %m",
1423  close(fd);
1424  return;
1425  }
1428  if (pg_fsync(fd) != 0)
1429  {
1430  ereport(LOG,
1432  errmsg("could not write to file \"%s\": %m",
1434  }
1436  if (close(fd) != 0)
1437  {
1438  ereport(LOG,
1440  errmsg("could not write to file \"%s\": %m",
1442  }
1443 }
static void pgstat_report_wait_end(void)
Definition: wait_event.h:277
#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:1271
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:721
static void pgstat_report_wait_start(uint32 wait_event_info)
Definition: wait_event.h:261
#define ereport(elevel,...)
Definition: elog.h:157
int errmsg(const char *fmt,...)
Definition: elog.c:909
int pg_fsync(int fd)
Definition: fd.c:352
#define close(a)
Definition: win32.h:12
#define snprintf
Definition: port.h:216
#define read(a, b, c)
Definition: win32.h:13

◆ BackupInProgress()

bool BackupInProgress ( void  )

Definition at line 12039 of file xlog.c.

References BACKUP_LABEL_FILE, and stat.

Referenced by pg_is_in_backup(), and PostmasterStateMachine().

12040 {
12041  struct stat stat_buf;
12042 
12043  return (stat(BACKUP_LABEL_FILE, &stat_buf) == 0);
12044 }
#define BACKUP_LABEL_FILE
Definition: xlog.h:398
#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:2598
void DebugFileOpen(void)
Definition: elog.c:1922
void smgrinit(void)
Definition: smgr.c:111
void InitSync(void)
Definition: sync.c:128
void InitFileAccess(void)
Definition: fd.c:873

◆ CancelBackup()

void CancelBackup ( void  )

Definition at line 12059 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().

12060 {
12061  struct stat stat_buf;
12062 
12063  /* if the backup_label file is not there, return */
12064  if (stat(BACKUP_LABEL_FILE, &stat_buf) < 0)
12065  return;
12066 
12067  /* remove leftover file from previously canceled backup if it exists */
12068  unlink(BACKUP_LABEL_OLD);
12069 
12071  {
12072  ereport(WARNING,
12074  errmsg("online backup mode was not canceled"),
12075  errdetail("File \"%s\" could not be renamed to \"%s\": %m.",
12077  return;
12078  }
12079 
12080  /* if the tablespace_map file is not there, return */
12081  if (stat(TABLESPACE_MAP, &stat_buf) < 0)
12082  {
12083  ereport(LOG,
12084  (errmsg("online backup mode canceled"),
12085  errdetail("File \"%s\" was renamed to \"%s\".",
12087  return;
12088  }
12089 
12090  /* remove leftover file from previously canceled backup if it exists */
12091  unlink(TABLESPACE_MAP_OLD);
12092 
12094  {
12095  ereport(LOG,
12096  (errmsg("online backup mode canceled"),
12097  errdetail("Files \"%s\" and \"%s\" were renamed to "
12098  "\"%s\" and \"%s\", respectively.",
12101  }
12102  else
12103  {
12104  ereport(WARNING,
12106  errmsg("online backup mode canceled"),
12107  errdetail("File \"%s\" was renamed to \"%s\", but "
12108  "file \"%s\" could not be renamed to \"%s\": %m.",
12111  }
12112 }
#define DEBUG1
Definition: elog.h:25
#define LOG
Definition: elog.h:26
#define BACKUP_LABEL_OLD
Definition: xlog.h:399
#define TABLESPACE_MAP
Definition: xlog.h:401
int errdetail(const char *fmt,...)
Definition: elog.c:1042
int errcode_for_file_access(void)
Definition: elog.c:721
int durable_rename(const char *oldfile, const char *newfile, int elevel)
Definition: fd.c:692
#define WARNING
Definition: elog.h:40
#define ereport(elevel,...)
Definition: elog.h:157
#define TABLESPACE_MAP_OLD
Definition: xlog.h:402
int errmsg(const char *fmt,...)
Definition: elog.c:909
#define BACKUP_LABEL_FILE
Definition: xlog.h:398
#define stat
Definition: win32_port.h:275

◆ ChangeToDataDir()

void ChangeToDataDir ( void  )

Definition at line 418 of file miscinit.c.

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

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

419 {
421 
422  if (chdir(DataDir) < 0)
423  ereport(FATAL,
425  errmsg("could not change directory to \"%s\": %m",
426  DataDir)));
427 }
#define AssertState(condition)
Definition: c.h:807
#define FATAL
Definition: elog.h:49
int errcode_for_file_access(void)
Definition: elog.c:721
#define ereport(elevel,...)
Definition: elog.h:157
int errmsg(const char *fmt,...)
Definition: elog.c:909
char * DataDir
Definition: globals.c:65

◆ check_stack_depth()

void check_stack_depth ( void  )

Definition at line 3441 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().

3442 {
3443  if (stack_is_too_deep())
3444  {
3445  ereport(ERROR,
3446  (errcode(ERRCODE_STATEMENT_TOO_COMPLEX),
3447  errmsg("stack depth limit exceeded"),
3448  errhint("Increase the configuration parameter \"max_stack_depth\" (currently %dkB), "
3449  "after ensuring the platform's stack depth limit is adequate.",
3450  max_stack_depth)));
3451  }
3452 }
int errhint(const char *fmt,...)
Definition: elog.c:1156
int errcode(int sqlerrcode)
Definition: elog.c:698
#define ERROR
Definition: elog.h:46
int max_stack_depth
Definition: postgres.c:100
#define ereport(elevel,...)
Definition: elog.h:157
int errmsg(const char *fmt,...)
Definition: elog.c:909
bool stack_is_too_deep(void)
Definition: postgres.c:3455

◆ checkDataDir()

void checkDataDir ( void  )

Definition at line 304 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().

305 {
306  struct stat stat_buf;
307 
308  Assert(DataDir);
309 
310  if (stat(DataDir, &stat_buf) != 0)
311  {
312  if (errno == ENOENT)
313  ereport(FATAL,
315  errmsg("data directory \"%s\" does not exist",
316  DataDir)));
317  else
318  ereport(FATAL,
320  errmsg("could not read permissions of directory \"%s\": %m",
321  DataDir)));
322  }
323 
324  /* eventual chdir would fail anyway, but let's test ... */
325  if (!S_ISDIR(stat_buf.st_mode))
326  ereport(FATAL,
327  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
328  errmsg("specified data directory \"%s\" is not a directory",
329  DataDir)));
330 
331  /*
332  * Check that the directory belongs to my userid; if not, reject.
333  *
334  * This check is an essential part of the interlock that prevents two
335  * postmasters from starting in the same directory (see CreateLockFile()).
336  * Do not remove or weaken it.
337  *
338  * XXX can we safely enable this check on Windows?
339  */
340 #if !defined(WIN32) && !defined(__CYGWIN__)
341  if (stat_buf.st_uid != geteuid())
342  ereport(FATAL,
343  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
344  errmsg("data directory \"%s\" has wrong ownership",
345  DataDir),
346  errhint("The server must be started by the user that owns the data directory.")));
347 #endif
348 
349  /*
350  * Check if the directory has correct permissions. If not, reject.
351  *
352  * Only two possible modes are allowed, 0700 and 0750. The latter mode
353  * indicates that group read/execute should be allowed on all newly
354  * created files and directories.
355  *
356  * XXX temporarily suppress check when on Windows, because there may not
357  * be proper support for Unix-y file permissions. Need to think of a
358  * reasonable check to apply on Windows.
359  */
360 #if !defined(WIN32) && !defined(__CYGWIN__)
361  if (stat_buf.st_mode & PG_MODE_MASK_GROUP)
362  ereport(FATAL,
363  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
364  errmsg("data directory \"%s\" has invalid permissions",
365  DataDir),
366  errdetail("Permissions should be u=rwx (0700) or u=rwx,g=rx (0750).")));
367 #endif
368 
369  /*
370  * Reset creation modes and mask based on the mode of the data directory.
371  *
372  * The mask was set earlier in startup to disallow group permissions on
373  * newly created files and directories. However, if group read/execute
374  * are present on the data directory then modify the create modes and mask
375  * to allow group read/execute on newly created files and directories and
376  * set the data_directory_mode GUC.
377  *
378  * Suppress when on Windows, because there may not be proper support for
379  * Unix-y file permissions.
380  */
381 #if !defined(WIN32) && !defined(__CYGWIN__)
382  SetDataDirectoryCreatePerm(stat_buf.st_mode);
383 
384  umask(pg_mode_mask);
386 #endif
387 
388  /* Check for PG_VERSION */
390 }
int errhint(const char *fmt,...)
Definition: elog.c:1156
void ValidatePgVersion(const char *path)
Definition: miscinit.c:1530
int errcode(int sqlerrcode)
Definition: elog.c:698
#define PG_MODE_MASK_GROUP
Definition: file_perm.h:29
#define FATAL
Definition: elog.h:49
int errdetail(const char *fmt,...)
Definition: elog.c:1042
int errcode_for_file_access(void)
Definition: elog.c:721
int pg_dir_create_mode
Definition: file_perm.c:18
#define ereport(elevel,...)
Definition: elog.h:157
#define Assert(condition)
Definition: c.h:804
#define S_ISDIR(m)
Definition: win32_port.h:316
int errmsg(const char *fmt,...)
Definition: elog.c:909
int data_directory_mode
Definition: globals.c:71
void SetDataDirectoryCreatePerm(int dataDirMode)
Definition: file_perm.c:34
char * DataDir
Definition: globals.c:65
int pg_mode_mask
Definition: file_perm.c:25
#define stat
Definition: win32_port.h:275

◆ CreateDataDirLockFile()

void CreateDataDirLockFile ( bool  amPostmaster)

Definition at line 1275 of file miscinit.c.

References CreateLockFile(), DataDir, and DIRECTORY_LOCK_FILE.

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

1276 {
1277  CreateLockFile(DIRECTORY_LOCK_FILE, amPostmaster, "", true, DataDir);
1278 }
#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:970
char * DataDir
Definition: globals.c:65

◆ CreateSocketLockFile()

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

Definition at line 1284 of file miscinit.c.

References CreateLockFile(), MAXPGPATH, and snprintf.

Referenced by StreamServerPort().

1286 {
1287  char lockfile[MAXPGPATH];
1288 
1289  snprintf(lockfile, sizeof(lockfile), "%s.lock", socketfile);
1290  CreateLockFile(lockfile, amPostmaster, socketDir, false, socketfile);
1291 }
static void CreateLockFile(const char *filename, bool amPostmaster, const char *socketDir, bool isDDLock, const char *refName)
Definition: miscinit.c:970
#define MAXPGPATH
#define snprintf
Definition: port.h:216

◆ 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(), cost_resultcache_rescan(), create_unique_path(), ExecChooseHashTableSize(), ExecInitResultCache(), 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:125
#define MAX_KILOBYTES
Definition: guc.h:26
int work_mem
Definition: globals.c:124
#define Assert(condition)
Definition: c.h:804

◆ GetAuthenticatedUserId()

Oid GetAuthenticatedUserId ( void  )

Definition at line 537 of file miscinit.c.

References AssertState, AuthenticatedUserId, and OidIsValid.

Referenced by InitializeParallelDSM().

538 {
540  return AuthenticatedUserId;
541 }
#define AssertState(condition)
Definition: c.h:807
#define OidIsValid(objectId)
Definition: c.h:710
static Oid AuthenticatedUserId
Definition: miscinit.c:458

◆ GetBackendTypeDesc()

const char* GetBackendTypeDesc ( BackendType  backendType)

Definition at line 232 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().

233 {
234  const char *backendDesc = "unknown process type";
235 
236  switch (backendType)
237  {
238  case B_INVALID:
239  backendDesc = "not initialized";
240  break;
241  case B_AUTOVAC_LAUNCHER:
242  backendDesc = "autovacuum launcher";
243  break;
244  case B_AUTOVAC_WORKER:
245  backendDesc = "autovacuum worker";
246  break;
247  case B_BACKEND:
248  backendDesc = "client backend";
249  break;
250  case B_BG_WORKER:
251  backendDesc = "background worker";
252  break;
253  case B_BG_WRITER:
254  backendDesc = "background writer";
255  break;
256  case B_CHECKPOINTER:
257  backendDesc = "checkpointer";
258  break;
259  case B_STARTUP:
260  backendDesc = "startup";
261  break;
262  case B_WAL_RECEIVER:
263  backendDesc = "walreceiver";
264  break;
265  case B_WAL_SENDER:
266  backendDesc = "walsender";
267  break;
268  case B_WAL_WRITER:
269  backendDesc = "walwriter";
270  break;
271  case B_ARCHIVER:
272  backendDesc = "archiver";
273  break;
274  case B_STATS_COLLECTOR:
275  backendDesc = "stats collector";
276  break;
277  case B_LOGGER:
278  backendDesc = "logger";
279  break;
280  }
281 
282  return backendDesc;
283 }

◆ GetCurrentRoleId()

Oid GetCurrentRoleId ( void  )

Definition at line 837 of file miscinit.c.

References InvalidOid, OuterUserId, and SetRoleIsActive.

Referenced by InitializeParallelDSM(), and show_role().

838 {
839  if (SetRoleIsActive)
840  return OuterUserId;
841  else
842  return InvalidOid;
843 }
static Oid OuterUserId
Definition: miscinit.c:460
#define InvalidOid
Definition: postgres_ext.h:36
static bool SetRoleIsActive
Definition: miscinit.c:470

◆ GetOuterUserId()

Oid GetOuterUserId ( void  )

Definition at line 489 of file miscinit.c.

References AssertState, OidIsValid, and OuterUserId.

Referenced by DropRole(), and RenameRole().

490 {
492  return OuterUserId;
493 }
#define AssertState(condition)
Definition: c.h:807
static Oid OuterUserId
Definition: miscinit.c:460
#define OidIsValid(objectId)
Definition: c.h:710

◆ GetSessionUserId()

Oid GetSessionUserId ( void  )

Definition at line 512 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().

513 {
515  return SessionUserId;
516 }
#define AssertState(condition)
Definition: c.h:807
static Oid SessionUserId
Definition: miscinit.c:459
#define OidIsValid(objectId)
Definition: c.h:710

◆ GetUserId()

Oid GetUserId ( void  )

Definition at line 478 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(), ExecBuildParamSetEqual(), 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(), ExecReindex(), ExecSecLabelStmt(), execute_extension_script(), ExecuteCallStmt(), ExecuteDoStmt(), ExecuteGrantStmt(), 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(), postgresExecForeignTruncate(), postgresGetForeignRelSize(), postgresImportForeignSchema(), PrepareTempTablespaces(), PrepareTransaction(), PublicationAddTables(), RangeVarCallbackForAlterRelation(), RangeVarCallbackForDropRelation(), RangeVarCallbackForLockTable(), RangeVarCallbackForPolicy(), RangeVarCallbackForReindexIndex(), RangeVarCallbackForRenameRule(), RangeVarCallbackForRenameTrigger(), RangeVarCallbackOwnsRelation(), RangeVarCallbackOwnsTable(), RangeVarGetAndCheckCreationNamespace(), ReassignOwnedObjects(), recomputeNamespacePath(), ReindexMultipleInternal(), 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().

479 {
481  return CurrentUserId;
482 }
#define AssertState(condition)
Definition: c.h:807
#define OidIsValid(objectId)
Definition: c.h:710
static Oid CurrentUserId
Definition: miscinit.c:461

◆ GetUserIdAndContext()

void GetUserIdAndContext ( Oid userid,
bool sec_def_context 
)

Definition at line 632 of file miscinit.c.

References CurrentUserId, and InLocalUserIdChange().

633 {
634  *userid = CurrentUserId;
635  *sec_def_context = InLocalUserIdChange();
636 }
bool InLocalUserIdChange(void)
Definition: miscinit.c:601
static Oid CurrentUserId
Definition: miscinit.c:461

◆ GetUserIdAndSecContext()

void GetUserIdAndSecContext ( Oid userid,
int *  sec_context 
)

◆ GetUserNameFromId()

char* GetUserNameFromId ( Oid  roleid,
bool  noerr 
)

Definition at line 893 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().

894 {
895  HeapTuple tuple;
896  char *result;
897 
898  tuple = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
899  if (!HeapTupleIsValid(tuple))
900  {
901  if (!noerr)
902  ereport(ERROR,
903  (errcode(ERRCODE_UNDEFINED_OBJECT),
904  errmsg("invalid role OID: %u", roleid)));
905  result = NULL;
906  }
907  else
908  {
909  result = pstrdup(NameStr(((Form_pg_authid) GETSTRUCT(tuple))->rolname));
910  ReleaseSysCache(tuple);
911  }
912  return result;
913 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:654
NameData rolname
Definition: pg_authid.h:34
char * pstrdup(const char *in)
Definition: mcxt.c:1299
int errcode(int sqlerrcode)
Definition: elog.c:698
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:56
#define ObjectIdGetDatum(X)
Definition: postgres.h:551
#define ERROR
Definition: elog.h:46
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1127
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1175
#define ereport(elevel,...)
Definition: elog.h:157
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
int errmsg(const char *fmt,...)
Definition: elog.c:909
#define NameStr(name)
Definition: c.h:681

◆ has_rolreplication()

bool has_rolreplication ( Oid  roleid)

Definition at line 659 of file miscinit.c.

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

Referenced by check_permissions(), and InitPostgres().

660 {
661  bool result = false;
662  HeapTuple utup;
663 
664  utup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
665  if (HeapTupleIsValid(utup))
666  {
667  result = ((Form_pg_authid) GETSTRUCT(utup))->rolreplication;
668  ReleaseSysCache(utup);
669  }
670  return result;
671 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:654
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:56
#define ObjectIdGetDatum(X)
Definition: postgres.h:551
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:46
#define MAX_BACKENDS
Definition: postmaster.h:76
int MaxBackends
Definition: globals.c:139
int max_wal_senders
Definition: walsender.c:121
int MaxConnections
Definition: globals.c:136
int autovacuum_max_workers
Definition: autovacuum.c:116
#define Assert(condition)
Definition: c.h:804
#define elog(elevel,...)
Definition: elog.h:232
int max_worker_processes
Definition: globals.c:137

◆ InitializeSessionUserId()

void InitializeSessionUserId ( const char *  rolename,
Oid  useroid 
)

Definition at line 677 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().

678 {
679  HeapTuple roleTup;
680  Form_pg_authid rform;
681  char *rname;
682 
683  /*
684  * Don't do scans if we're bootstrapping, none of the system catalogs
685  * exist yet, and they should be owned by postgres anyway.
686  */
688 
689  /* call only once */
691 
692  /*
693  * Make sure syscache entries are flushed for recent catalog changes. This
694  * allows us to find roles that were created on-the-fly during
695  * authentication.
696  */
698 
699  if (rolename != NULL)
700  {
701  roleTup = SearchSysCache1(AUTHNAME, PointerGetDatum(rolename));
702  if (!HeapTupleIsValid(roleTup))
703  ereport(FATAL,
704  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
705  errmsg("role \"%s\" does not exist", rolename)));
706  }
707  else
708  {
709  roleTup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
710  if (!HeapTupleIsValid(roleTup))
711  ereport(FATAL,
712  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
713  errmsg("role with OID %u does not exist", roleid)));
714  }
715 
716  rform = (Form_pg_authid) GETSTRUCT(roleTup);
717  roleid = rform->oid;
718  rname = NameStr(rform->rolname);
719 
720  AuthenticatedUserId = roleid;
721  AuthenticatedUserIsSuperuser = rform->rolsuper;
722 
723  /* This sets OuterUserId/CurrentUserId too */
725 
726  /* Also mark our PGPROC entry with the authenticated user id */
727  /* (We assume this is an atomic store so no lock is needed) */
728  MyProc->roleId = roleid;
729 
730  /*
731  * These next checks are not enforced when in standalone mode, so that
732  * there is a way to recover from sillinesses like "UPDATE pg_authid SET
733  * rolcanlogin = false;".
734  */
735  if (IsUnderPostmaster)
736  {
737  /*
738  * Is role allowed to login at all?
739  */
740  if (!rform->rolcanlogin)
741  ereport(FATAL,
742  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
743  errmsg("role \"%s\" is not permitted to log in",
744  rname)));
745 
746  /*
747  * Check connection limit for this role.
748  *
749  * There is a race condition here --- we create our PGPROC before
750  * checking for other PGPROCs. If two backends did this at about the
751  * same time, they might both think they were over the limit, while
752  * ideally one should succeed and one fail. Getting that to work
753  * exactly seems more trouble than it is worth, however; instead we
754  * just document that the connection limit is approximate.
755  */
756  if (rform->rolconnlimit >= 0 &&
758  CountUserBackends(roleid) > rform->rolconnlimit)
759  ereport(FATAL,
760  (errcode(ERRCODE_TOO_MANY_CONNECTIONS),
761  errmsg("too many connections for role \"%s\"",
762  rname)));
763  }
764 
765  /* Record username and superuser status as GUC settings too */
766  SetConfigOption("session_authorization", rname,
768  SetConfigOption("is_superuser",
769  AuthenticatedUserIsSuperuser ? "on" : "off",
771 
772  ReleaseSysCache(roleTup);
773 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:654
#define AssertState(condition)
Definition: c.h:807
void AcceptInvalidationMessages(void)
Definition: inval.c:687
PGPROC * MyProc
Definition: proc.c:68
#define PointerGetDatum(X)
Definition: postgres.h:600
Oid roleId
Definition: proc.h:155
int errcode(int sqlerrcode)
Definition: elog.c:698
#define OidIsValid(objectId)
Definition: c.h:710
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:56
#define ObjectIdGetDatum(X)
Definition: postgres.h:551
#define FATAL
Definition: elog.h:49
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:8103
bool IsUnderPostmaster
Definition: globals.c:112
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:464
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1127
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1175
#define ereport(elevel,...)
Definition: elog.h:157
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
int CountUserBackends(Oid roleid)
Definition: procarray.c:3566
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:394
int errmsg(const char *fmt,...)
Definition: elog.c:909
#define NameStr(name)
Definition: c.h:681
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:520
static Oid AuthenticatedUserId
Definition: miscinit.c:458

◆ InitializeSessionUserIdStandalone()

void InitializeSessionUserIdStandalone ( void  )

Definition at line 780 of file miscinit.c.

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

Referenced by InitPostgres().

781 {
782  /*
783  * This function should only be called in single-user mode, in autovacuum
784  * workers, and in background workers.
785  */
787 
788  /* call only once */
790 
791  AuthenticatedUserId = BOOTSTRAP_SUPERUSERID;
793 
794  SetSessionUserId(BOOTSTRAP_SUPERUSERID, true);
795 }
#define AssertState(condition)
Definition: c.h:807
#define OidIsValid(objectId)
Definition: c.h:710
bool IsBackgroundWorker
Definition: globals.c:114
bool IsUnderPostmaster
Definition: globals.c:112
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:464
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:3448
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:520
static Oid AuthenticatedUserId
Definition: miscinit.c:458

◆ 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(), CLIENT_CONNECTION_CHECK_TIMEOUT, ClientCheckTimeoutHandler(), 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_beinit(), 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  {
625  }
626 
627  /*
628  * bufmgr needs another initialization call too
629  */
631 
632  /*
633  * Initialize local process's access to XLOG.
634  */
635  if (IsUnderPostmaster)
636  {
637  /*
638  * The postmaster already started the XLOG machinery, but we need to
639  * call InitXLOGAccess(), if the system isn't in hot-standby mode.
640  * This is handled by calling RecoveryInProgress and ignoring the
641  * result.
642  */
643  (void) RecoveryInProgress();
644  }
645  else
646  {
647  /*
648  * We are either a bootstrap process or a standalone backend. Either
649  * way, start up the XLOG machinery, and register to have it closed
650  * down at exit.
651  *
652  * We don't yet have an aux-process resource owner, but StartupXLOG
653  * and ShutdownXLOG will need one. Hence, create said resource owner
654  * (and register a callback to clean it up after ShutdownXLOG runs).
655  */
657 
658  StartupXLOG();
659  /* Release (and warn about) any buffer pins leaked in StartupXLOG */
661  /* Reset CurrentResourceOwner to nothing for the moment */
662  CurrentResourceOwner = NULL;
663 
665  }
666 
667  /*
668  * Initialize the relation cache and the system catalog caches. Note that
669  * no catalog access happens here; we only set up the hashtable structure.
670  * We must do this before starting a transaction because transaction abort
671  * would try to touch these hashtables.
672  */
675  InitPlanCache();
676 
677  /* Initialize portal manager */
679 
680  /* Initialize stats collection --- must happen before first xact */
681  if (!bootstrap)
683 
684  /* Initialize status reporting */
685  if (!bootstrap)
686  pgstat_beinit();
687 
688  /*
689  * Load relcache entries for the shared system catalogs. This must create
690  * at least entries for pg_database and catalogs used for authentication.
691  */
693 
694  /*
695  * Set up process-exit callback to do pre-shutdown cleanup. This is the
696  * first before_shmem_exit callback we register; thus, this will be the
697  * last thing we do before low-level modules like the buffer manager begin
698  * to close down. We need to have this in place before we begin our first
699  * transaction --- if we fail during the initialization transaction, as is
700  * entirely possible, we need the AbortTransaction call to clean up.
701  */
703 
704  /* The autovacuum launcher is done here */
706  {
707  /* report this backend in the PgBackendStatus array */
708  pgstat_bestart();
709 
710  return;
711  }
712 
713  /*
714  * Start a new transaction here before first access to db, and get a
715  * snapshot. We don't have a use for the snapshot itself, but we're
716  * interested in the secondary effect that it sets RecentGlobalXmin. (This
717  * is critical for anything that reads heap pages, because HOT may decide
718  * to prune them even if the process doesn't attempt to modify any
719  * tuples.)
720  *
721  * FIXME: This comment is inaccurate / the code buggy. A snapshot that is
722  * not pushed/active does not reliably prevent HOT pruning (->xmin could
723  * e.g. be cleared when cache invalidations are processed).
724  */
725  if (!bootstrap)
726  {
727  /* statement_timestamp must be set for timeouts to work correctly */
730 
731  /*
732  * transaction_isolation will have been set to the default by the
733  * above. If the default is "serializable", and we are in hot
734  * standby, we will fail if we don't change it to something lower.
735  * Fortunately, "read committed" is plenty good enough.
736  */
738 
739  (void) GetTransactionSnapshot();
740  }
741 
742  /*
743  * Perform client authentication if necessary, then figure out our
744  * postgres user ID, and see if we are a superuser.
745  *
746  * In standalone mode and in autovacuum worker processes, we use a fixed
747  * ID, otherwise we figure it out from the authenticated user name.
748  */
749  if (bootstrap || IsAutoVacuumWorkerProcess())
750  {
752  am_superuser = true;
753  }
754  else if (!IsUnderPostmaster)
755  {
757  am_superuser = true;
758  if (!ThereIsAtLeastOneRole())
760  (errcode(ERRCODE_UNDEFINED_OBJECT),
761  errmsg("no roles are defined in this database system"),
762  errhint("You should immediately run CREATE USER \"%s\" SUPERUSER;.",
763  username != NULL ? username : "postgres")));
764  }
765  else if (IsBackgroundWorker)
766  {
767  if (username == NULL && !OidIsValid(useroid))
768  {
770  am_superuser = true;
771  }
772  else
773  {
775  am_superuser = superuser();
776  }
777  }
778  else
779  {
780  /* normal multiuser case */
781  Assert(MyProcPort != NULL);
784  am_superuser = superuser();
785  }
786 
787  /*
788  * If we're trying to shut down, only superusers can connect, and new
789  * replication connections are not allowed.
790  */
791  if ((!am_superuser || am_walsender) &&
792  MyProcPort != NULL &&
794  {
795  if (am_walsender)
796  ereport(FATAL,
797  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
798  errmsg("new replication connections are not allowed during database shutdown")));
799  else
800  ereport(FATAL,
801  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
802  errmsg("must be superuser to connect during database shutdown")));
803  }
804 
805  /*
806  * Binary upgrades only allowed super-user connections
807  */
808  if (IsBinaryUpgrade && !am_superuser)
809  {
810  ereport(FATAL,
811  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
812  errmsg("must be superuser to connect in binary upgrade mode")));
813  }
814 
815  /*
816  * The last few connection slots are reserved for superusers. Replication
817  * connections are drawn from slots reserved with max_wal_senders and not
818  * limited by max_connections or superuser_reserved_connections.
819  */
820  if (!am_superuser && !am_walsender &&
821  ReservedBackends > 0 &&
823  ereport(FATAL,
824  (errcode(ERRCODE_TOO_MANY_CONNECTIONS),
825  errmsg("remaining connection slots are reserved for non-replication superuser connections")));
826 
827  /* Check replication permissions needed for walsender processes. */
828  if (am_walsender)
829  {
830  Assert(!bootstrap);
831 
832  if (!superuser() && !has_rolreplication(GetUserId()))
833  ereport(FATAL,
834  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
835  errmsg("must be superuser or replication role to start walsender")));
836  }
837 
838  /*
839  * If this is a plain walsender only supporting physical replication, we
840  * don't want to connect to any particular database. Just finish the
841  * backend startup by processing any options from the startup packet, and
842  * we're done.
843  */
845  {
846  /* process any options passed in the startup packet */
847  if (MyProcPort != NULL)
848  process_startup_options(MyProcPort, am_superuser);
849 
850  /* Apply PostAuthDelay as soon as we've read all options */
851  if (PostAuthDelay > 0)
852  pg_usleep(PostAuthDelay * 1000000L);
853 
854  /* initialize client encoding */
856 
857  /* report this backend in the PgBackendStatus array */
858  pgstat_bestart();
859 
860  /* close the transaction we started above */
862 
863  return;
864  }
865 
866  /*
867  * Set up the global variables holding database id and default tablespace.
868  * But note we won't actually try to touch the database just yet.
869  *
870  * We take a shortcut in the bootstrap case, otherwise we have to look up
871  * the db's entry in pg_database.
872  */
873  if (bootstrap)
874  {
875  MyDatabaseId = TemplateDbOid;
876  MyDatabaseTableSpace = DEFAULTTABLESPACE_OID;
877  }
878  else if (in_dbname != NULL)
879  {
880  HeapTuple tuple;
881  Form_pg_database dbform;
882 
883  tuple = GetDatabaseTuple(in_dbname);
884  if (!HeapTupleIsValid(tuple))
885  ereport(FATAL,
886  (errcode(ERRCODE_UNDEFINED_DATABASE),
887  errmsg("database \"%s\" does not exist", in_dbname)));
888  dbform = (Form_pg_database) GETSTRUCT(tuple);
889  MyDatabaseId = dbform->oid;
890  MyDatabaseTableSpace = dbform->dattablespace;
891  /* take database name from the caller, just for paranoia */
892  strlcpy(dbname, in_dbname, sizeof(dbname));
893  }
894  else if (OidIsValid(dboid))
895  {
896  /* caller specified database by OID */
897  HeapTuple tuple;
898  Form_pg_database dbform;
899 
900  tuple = GetDatabaseTupleByOid(dboid);
901  if (!HeapTupleIsValid(tuple))
902  ereport(FATAL,
903  (errcode(ERRCODE_UNDEFINED_DATABASE),
904  errmsg("database %u does not exist", dboid)));
905  dbform = (Form_pg_database) GETSTRUCT(tuple);
906  MyDatabaseId = dbform->oid;
907  MyDatabaseTableSpace = dbform->dattablespace;
908  Assert(MyDatabaseId == dboid);
909  strlcpy(dbname, NameStr(dbform->datname), sizeof(dbname));
910  /* pass the database name back to the caller */
911  if (out_dbname)
912  strcpy(out_dbname, dbname);
913  }
914  else
915  {
916  /*
917  * If this is a background worker not bound to any particular
918  * database, we're done now. Everything that follows only makes sense
919  * if we are bound to a specific database. We do need to close the
920  * transaction we started before returning.
921  */
922  if (!bootstrap)
923  {
924  pgstat_bestart();
926  }
927  return;
928  }
929 
930  /*
931  * Now, take a writer's lock on the database we are trying to connect to.
932  * If there is a concurrently running DROP DATABASE on that database, this
933  * will block us until it finishes (and has committed its update of
934  * pg_database).
935  *
936  * Note that the lock is not held long, only until the end of this startup
937  * transaction. This is OK since we will advertise our use of the
938  * database in the ProcArray before dropping the lock (in fact, that's the
939  * next thing to do). Anyone trying a DROP DATABASE after this point will
940  * see us in the array once they have the lock. Ordering is important for
941  * this because we don't want to advertise ourselves as being in this
942  * database until we have the lock; otherwise we create what amounts to a
943  * deadlock with CountOtherDBBackends().
944  *
945  * Note: use of RowExclusiveLock here is reasonable because we envision
946  * our session as being a concurrent writer of the database. If we had a
947  * way of declaring a session as being guaranteed-read-only, we could use
948  * AccessShareLock for such sessions and thereby not conflict against
949  * CREATE DATABASE.
950  */
951  if (!bootstrap)
952  LockSharedObject(DatabaseRelationId, MyDatabaseId, 0,
954 
955  /*
956  * Now we can mark our PGPROC entry with the database ID.
957  *
958  * We assume this is an atomic store so no lock is needed; though actually
959  * things would work fine even if it weren't atomic. Anyone searching the
960  * ProcArray for this database's ID should hold the database lock, so they
961  * would not be executing concurrently with this store. A process looking
962  * for another database's ID could in theory see a chance match if it read
963  * a partially-updated databaseId value; but as long as all such searches
964  * wait and retry, as in CountOtherDBBackends(), they will certainly see
965  * the correct value on their next try.
966  */
968 
969  /*
970  * We established a catalog snapshot while reading pg_authid and/or
971  * pg_database; but until we have set up MyDatabaseId, we won't react to
972  * incoming sinval messages for unshared catalogs, so we won't realize it
973  * if the snapshot has been invalidated. Assume it's no good anymore.
974  */
976 
977  /*
978  * Recheck pg_database to make sure the target database hasn't gone away.
979  * If there was a concurrent DROP DATABASE, this ensures we will die
980  * cleanly without creating a mess.
981  */
982  if (!bootstrap)
983  {
984  HeapTuple tuple;
985 
986  tuple = GetDatabaseTuple(dbname);
987  if (!HeapTupleIsValid(tuple) ||
988  MyDatabaseId != ((Form_pg_database) GETSTRUCT(tuple))->oid ||
989  MyDatabaseTableSpace != ((Form_pg_database) GETSTRUCT(tuple))->dattablespace)
990  ereport(FATAL,
991  (errcode(ERRCODE_UNDEFINED_DATABASE),
992  errmsg("database \"%s\" does not exist", dbname),
993  errdetail("It seems to have just been dropped or renamed.")));
994  }
995 
996  /*
997  * Now we should be able to access the database directory safely. Verify
998  * it's there and looks reasonable.
999  */
1001 
1002  if (!bootstrap)
1003  {
1004  if (access(fullpath, F_OK) == -1)
1005  {
1006  if (errno == ENOENT)
1007  ereport(FATAL,
1008  (errcode(ERRCODE_UNDEFINED_DATABASE),
1009  errmsg("database \"%s\" does not exist",
1010  dbname),
1011  errdetail("The database subdirectory \"%s\" is missing.",
1012  fullpath)));
1013  else
1014  ereport(FATAL,
1016  errmsg("could not access directory \"%s\": %m",
1017  fullpath)));
1018  }
1019 
1020  ValidatePgVersion(fullpath);
1021  }
1022 
1023  SetDatabasePath(fullpath);
1024 
1025  /*
1026  * It's now possible to do real access to the system catalogs.
1027  *
1028  * Load relcache entries for the system catalogs. This must create at
1029  * least the minimum set of "nailed-in" cache entries.
1030  */
1032 
1033  /* set up ACL framework (so CheckMyDatabase can check permissions) */
1034  initialize_acl();
1035 
1036  /*
1037  * Re-read the pg_database row for our database, check permissions and set
1038  * up database-specific GUC settings. We can't do this until all the
1039  * database-access infrastructure is up. (Also, it wants to know if the
1040  * user is a superuser, so the above stuff has to happen first.)
1041  */
1042  if (!bootstrap)
1043  CheckMyDatabase(dbname, am_superuser, override_allow_connections);
1044 
1045  /*
1046  * Now process any command-line switches and any additional GUC variable
1047  * settings passed in the startup packet. We couldn't do this before
1048  * because we didn't know if client is a superuser.
1049  */
1050  if (MyProcPort != NULL)
1051  process_startup_options(MyProcPort, am_superuser);
1052 
1053  /* Process pg_db_role_setting options */
1055 
1056  /* Apply PostAuthDelay as soon as we've read all options */
1057  if (PostAuthDelay > 0)
1058  pg_usleep(PostAuthDelay * 1000000L);
1059 
1060  /*
1061  * Initialize various default states that can't be set up until we've
1062  * selected the active user and gotten the right GUC settings.
1063  */
1064 
1065  /* set default namespace search path */
1067 
1068  /* initialize client encoding */
1070 
1071  /* Initialize this backend's session state. */
1073 
1074  /* report this backend in the PgBackendStatus array */
1075  if (!bootstrap)
1076  pgstat_bestart();
1077 
1078  /* close the transaction we started above */
1079  if (!bootstrap)
1081 }
static void ClientCheckTimeoutHandler(void)
Definition: postinit.c:1252
int errhint(const char *fmt,...)
Definition: elog.c:1156
BackendId MyBackendId
Definition: globals.c:84
#define GETSTRUCT(TUP)
Definition: htup_details.h:654
struct Port * MyProcPort
Definition: globals.c:46
CAC_state canAcceptConnections
Definition: libpq-be.h:138
void SharedInvalBackendInit(bool sendOnly)
Definition: sinvaladt.c:257
#define DEBUG3
Definition: elog.h:23
Oid GetUserId(void)
Definition: miscinit.c:478
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:97
ResourceOwner CurrentResourceOwner
Definition: resowner.c:146
void CommitTransactionCommand(void)
Definition: xact.c:2939
void ReleaseAuxProcessResources(bool isCommit)
Definition: resowner.c:908
void InitializeSession(void)
Definition: session.c:54
void ValidatePgVersion(const char *path)
Definition: miscinit.c:1530
void RelationCacheInitializePhase2(void)
Definition: relcache.c:3789
static void PerformAuthentication(Port *port)
Definition: postinit.c:186
static void LockTimeoutHandler(void)
Definition: postinit.c:1226
int errcode(int sqlerrcode)
Definition: elog.c:698
bool superuser(void)
Definition: superuser.c:46
void initialize_acl(void)
Definition: acl.c:4648
void pgstat_bestart(void)
bool RecoveryInProgress(void)
Definition: xlog.c:8237
Snapshot GetTransactionSnapshot(void)
Definition: snapmgr.c:250
#define OidIsValid(objectId)
Definition: c.h:710
Oid GetSessionUserId(void)
Definition: miscinit.c:512
bool HaveNFreeProcs(int n)
Definition: proc.c:676
static void CheckMyDatabase(const char *name, bool am_superuser, bool override_allow_connections)
Definition: postinit.c:306
bool IsBinaryUpgrade
Definition: globals.c:113
Oid MyDatabaseTableSpace
Definition: globals.c:90
bool IsBackgroundWorker
Definition: globals.c:114
void RelationCacheInitializePhase3(void)
Definition: relcache.c:3848
#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:49
void InitializeSearchPath(void)
Definition: namespace.c:4323
int MaxBackends
Definition: globals.c:139
void on_shmem_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:361
bool IsUnderPostmaster
Definition: globals.c:112
#define RowExclusiveLock
Definition: lockdefs.h:38
int errdetail(const char *fmt,...)
Definition: elog.c:1042
int errcode_for_file_access(void)
Definition: elog.c:721
void pgstat_beinit(void)
static void IdleInTransactionSessionTimeoutHandler(void)
Definition: postinit.c:1236
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:2934
static bool ThereIsAtLeastOneRole(void)
Definition: postinit.c:1263
void StartupXLOG(void)
Definition: xlog.c:6450
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:3448
const char * username
Definition: pgbench.c:280
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:291
#define WARNING
Definition: elog.h:40
void ShutdownXLOG(int code, Datum arg)
Definition: xlog.c:8653
static HeapTuple GetDatabaseTupleByOid(Oid dboid)
Definition: postinit.c:140
#define InvalidBackendId
Definition: backendid.h:23
bool am_db_walsender
Definition: walsender.c:118
Oid MyDatabaseId
Definition: globals.c:88
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:1187
#define ereport(elevel,...)
Definition: elog.h:157
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:3442
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
#define Assert(condition)
Definition: c.h:804
void InitializeSessionUserIdStandalone(void)
Definition: miscinit.c:780
void StartTransactionCommand(void)
Definition: xact.c:2838
void CreateAuxProcessResourceOwner(void)
Definition: resowner.c:887
#define XACT_READ_COMMITTED
Definition: xact.h:37
static void IdleSessionTimeoutHandler(void)
Definition: postinit.c:1244
void InitializeSessionUserId(const char *rolename, Oid roleid)
Definition: miscinit.c:677
char * dbname
Definition: streamutil.c:51
static void process_startup_options(Port *port, bool am_superuser)
Definition: postinit.c:1088
int XactIsoLevel
Definition: xact.c:75
bool has_rolreplication(Oid roleid)
Definition: miscinit.c:659
void InitializeClientEncoding(void)
Definition: mbutils.c:281
void InitPlanCache(void)
Definition: plancache.c:127
void InitProcessPhase2(void)
Definition: proc.c:482
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:394
void RelationCacheInitialize(void)
Definition: relcache.c:3753
void ProcSignalInit(int pss_idx)
Definition: procsignal.c:161
void InitCatalogCache(void)
Definition: syscache.c:1021
static void StatementTimeoutHandler(void)
Definition: postinit.c:1204
void SetCurrentStatementStartTimestamp(void)
Definition: xact.c:833
int errmsg(const char *fmt,...)
Definition: elog.c:909
#define elog(elevel,...)
Definition: elog.h:232
#define NameStr(name)
Definition: c.h:681
static void process_settings(Oid databaseid, Oid roleid)
Definition: postinit.c:1153
void CheckDeadLockAlert(void)
Definition: proc.c:1870
void InitBufferPoolBackend(void)
Definition: bufmgr.c:2621

◆ 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(), 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  /* In EXEC_BACKEND case we will not have inherited BlockSig etc values */
122 #ifdef EXEC_BACKEND
123  pqinitmask();
124 #endif
125 
126  /* Initialize process-local latch support */
131 
132  /*
133  * If possible, make this process a group leader, so that the postmaster
134  * can signal any child processes too. Not all processes will have
135  * children, but for consistency we make all postmaster child processes do
136  * this.
137  */
138 #ifdef HAVE_SETSID
139  if (setsid() < 0)
140  elog(FATAL, "setsid() failed: %m");
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:3388
#define SIGQUIT
Definition: win32_port.h:160
void InitLatch(Latch *latch)
Definition: latch.c:338
void InitProcessGlobals(void)
Definition: postmaster.c:2617
#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:49
bool IsUnderPostmaster
Definition: globals.c:112
sigset_t BlockSig
Definition: pqsignal.c:22
void InitializeLatchSupport(void)
Definition: latch.c:192
pqsigfunc pqsignal(int signum, pqsigfunc handler)
Definition: signal.c:170
void InitializeLatchWaitSet(void)
Definition: latch.c:290
#define elog(elevel,...)
Definition: elog.h:232
struct Latch * MyLatch
Definition: globals.c:57
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:111
static char * argv0
Definition: pg_ctl.c:97
void InitLatch(Latch *latch)
Definition: latch.c:338
void InitProcessGlobals(void)
Definition: postmaster.c:2617
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:49
int find_my_exec(const char *argv0, char *retpath)
Definition: exec.c:127
char my_exec_path[MAXPGPATH]
Definition: globals.c:75
sigset_t BlockSig
Definition: pqsignal.c:22
void InitializeLatchSupport(void)
Definition: latch.c:192
#define Assert(condition)
Definition: c.h:804
void InitializeLatchWaitSet(void)
Definition: latch.c:290
#define elog(elevel,...)
Definition: elog.h:232
struct Latch * MyLatch
Definition: globals.c:57
char pkglib_path[MAXPGPATH]
Definition: globals.c:76

◆ InLocalUserIdChange()

bool InLocalUserIdChange ( void  )

Definition at line 601 of file miscinit.c.

References SECURITY_LOCAL_USERID_CHANGE, and SecurityRestrictionContext.

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

602 {
604 }
static int SecurityRestrictionContext
Definition: miscinit.c:467
#define SECURITY_LOCAL_USERID_CHANGE
Definition: miscadmin.h:299

◆ InNoForceRLSOperation()

bool InNoForceRLSOperation ( void  )

Definition at line 619 of file miscinit.c.

References SECURITY_NOFORCE_RLS, and SecurityRestrictionContext.

Referenced by check_enable_rls().

620 {
622 }
static int SecurityRestrictionContext
Definition: miscinit.c:467
#define SECURITY_NOFORCE_RLS
Definition: miscadmin.h:301

◆ InSecurityRestrictedOperation()

bool InSecurityRestrictedOperation ( void  )

◆ pg_bindtextdomain()

void pg_bindtextdomain ( const char *  domain)

Definition at line 1683 of file miscinit.c.

References get_locale_path(), MAXPGPATH, and my_exec_path.

Referenced by _PG_init().

1684 {
1685 #ifdef ENABLE_NLS
1686  if (my_exec_path[0] != '\0')
1687  {
1688  char locale_path[MAXPGPATH];
1689 
1690  get_locale_path(my_exec_path, locale_path);
1691  bindtextdomain(domain, locale_path);
1692  pg_bind_textdomain_codeset(domain);
1693  }
1694 #endif
1695 }
#define MAXPGPATH
char my_exec_path[MAXPGPATH]
Definition: globals.c:75
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:1299
void pfree(void *pointer)
Definition: mcxt.c:1169
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:698
bool RecoveryInProgress(void)
Definition: xlog.c:8237
#define ERROR
Definition: elog.h:46
#define ereport(elevel,...)
Definition: elog.h:157
int errmsg(const char *fmt,...)
Definition: elog.c:909

◆ 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:698
bool IsInParallelMode(void)
Definition: xact.c:1012
#define ERROR
Definition: elog.h:46
#define ereport(elevel,...)
Definition: elog.h:157
int errmsg(const char *fmt,...)
Definition: elog.c:909

◆ 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:698
#define ERROR
Definition: elog.h:46
#define ereport(elevel,...)
Definition: elog.h:157
bool XactReadOnly
Definition: xact.c:78
int errmsg(const char *fmt,...)
Definition: elog.c:909

◆ process_session_preload_libraries()

void process_session_preload_libraries ( void  )

Definition at line 1672 of file miscinit.c.

References load_libraries(), local_preload_libraries_string, and session_preload_libraries_string.

Referenced by PostgresMain().

1673 {
1675  "session_preload_libraries",
1676  false);
1678  "local_preload_libraries",
1679  true);
1680 }
static void load_libraries(const char *libraries, const char *gucname, bool restricted)
Definition: miscinit.c:1607
char * local_preload_libraries_string
Definition: miscinit.c:1595
char * session_preload_libraries_string
Definition: miscinit.c:1593

◆ process_shared_preload_libraries()

void process_shared_preload_libraries ( void  )

Definition at line 1659 of file miscinit.c.

References load_libraries(), process_shared_preload_libraries_in_progress, and shared_preload_libraries_string.

Referenced by BackendRun(), and PostmasterMain().

1660 {
1663  "shared_preload_libraries",
1664  false);
1666 }
bool process_shared_preload_libraries_in_progress
Definition: miscinit.c:1598
char * shared_preload_libraries_string
Definition: miscinit.c:1594
static void load_libraries(const char *libraries, const char *gucname, bool restricted)
Definition: miscinit.c:1607

◆ ProcessInterrupts()

void ProcessInterrupts ( void  )

Definition at line 3105 of file postgres.c.

References Assert, BackgroundWorker::bgw_type, CheckClientConnectionPending, client_connection_check_interval, CLIENT_CONNECTION_CHECK_TIMEOUT, ClientAuthInProgress, ClientConnectionLost, CritSectionCount, DEBUG1, DestNone, DestRemote, DoingCommandRead, enable_timeout_after(), ereport, errcode(), errdetail_recovery_conflict(), errhint(), errmsg(), errmsg_internal(), ERROR, FATAL, get_timeout_finish_time(), get_timeout_indicator(), HandleParallelMessages(), IdleInTransactionSessionTimeout, IdleInTransactionSessionTimeoutPending, IdleSessionTimeout, IdleSessionTimeoutPending, InterruptHoldoffCount, InterruptPending, IsAutoVacuumWorkerProcess(), IsBackgroundWorker, IsLogicalLauncher(), IsLogicalWorker(), LOCK_TIMEOUT, LockErrorCleanup(), LogMemoryContextPending, MyBgworkerEntry, ParallelMessagePending, pgstat_report_recovery_conflict(), pq_check_connection(), proc_exit(), ProcDiePending, ProcessLogMemoryContextInterrupt(), ProcessProcSignalBarrier(), PROCSIG_RECOVERY_CONFLICT_DATABASE, ProcSignalBarrierPending, QueryCancelHoldoffCount, QueryCancelPending, RecoveryConflictPending, RecoveryConflictReason, RecoveryConflictRetryable, STATEMENT_TIMEOUT, and whereToSendOutput.

Referenced by die().

3106 {
3107  /* OK to accept any interrupts now? */
3108  if (InterruptHoldoffCount != 0 || CritSectionCount != 0)
3109  return;
3110  InterruptPending = false;
3111 
3112  if (ProcDiePending)
3113  {
3114  ProcDiePending = false;
3115  QueryCancelPending = false; /* ProcDie trumps QueryCancel */
3116  LockErrorCleanup();
3117  /* As in quickdie, don't risk sending to client during auth */
3121  ereport(FATAL,
3122  (errcode(ERRCODE_QUERY_CANCELED),
3123  errmsg("canceling authentication due to timeout")));
3124  else if (IsAutoVacuumWorkerProcess())
3125  ereport(FATAL,
3126  (errcode(ERRCODE_ADMIN_SHUTDOWN),
3127  errmsg("terminating autovacuum process due to administrator command")));
3128  else if (IsLogicalWorker())
3129  ereport(FATAL,
3130  (errcode(ERRCODE_ADMIN_SHUTDOWN),
3131  errmsg("terminating logical replication worker due to administrator command")));
3132  else if (IsLogicalLauncher())
3133  {
3134  ereport(DEBUG1,
3135  (errmsg_internal("logical replication launcher shutting down")));
3136 
3137  /*
3138  * The logical replication launcher can be stopped at any time.
3139  * Use exit status 1 so the background worker is restarted.
3140  */
3141  proc_exit(1);
3142  }
3144  {
3146  ereport(FATAL,
3147  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
3148  errmsg("terminating connection due to conflict with recovery"),
3150  }
3151  else if (RecoveryConflictPending)
3152  {
3153  /* Currently there is only one non-retryable recovery conflict */
3156  ereport(FATAL,
3157  (errcode(ERRCODE_DATABASE_DROPPED),
3158  errmsg("terminating connection due to conflict with recovery"),
3160  }
3161  else if (IsBackgroundWorker)
3162  ereport(FATAL,
3163  (errcode(ERRCODE_ADMIN_SHUTDOWN),
3164  errmsg("terminating background worker \"%s\" due to administrator command",
3166  else
3167  ereport(FATAL,
3168  (errcode(ERRCODE_ADMIN_SHUTDOWN),
3169  errmsg("terminating connection due to administrator command")));
3170  }
3171 
3173  {
3175 
3176  /*
3177  * Check for lost connection and re-arm, if still configured, but not
3178  * if we've arrived back at DoingCommandRead state. We don't want to
3179  * wake up idle sessions, and they already know how to detect lost
3180  * connections.
3181  */
3183  {
3184  if (!pq_check_connection())
3185  ClientConnectionLost = true;
3186  else
3189  }
3190  }
3191 
3193  {
3194  QueryCancelPending = false; /* lost connection trumps QueryCancel */
3195  LockErrorCleanup();
3196  /* don't send to client, we already know the connection to be dead. */
3198  ereport(FATAL,
3199  (errcode(ERRCODE_CONNECTION_FAILURE),
3200  errmsg("connection to client lost")));
3201  }
3202 
3203  /*
3204  * If a recovery conflict happens while we are waiting for input from the
3205  * client, the client is presumably just sitting idle in a transaction,
3206  * preventing recovery from making progress. Terminate the connection to
3207  * dislodge it.
3208  */
3210  {
3211  QueryCancelPending = false; /* this trumps QueryCancel */
3212  RecoveryConflictPending = false;
3213  LockErrorCleanup();
3215  ereport(FATAL,
3216  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
3217  errmsg("terminating connection due to conflict with recovery"),
3219  errhint("In a moment you should be able to reconnect to the"
3220  " database and repeat your command.")));
3221  }
3222 
3223  /*
3224  * Don't allow query cancel interrupts while reading input from the
3225  * client, because we might lose sync in the FE/BE protocol. (Die
3226  * interrupts are OK, because we won't read any further messages from the
3227  * client in that case.)
3228  */
3230  {
3231  /*
3232  * Re-arm InterruptPending so that we process the cancel request as
3233  * soon as we're done reading the message.
3234  */
3235  InterruptPending = true;
3236  }
3237  else if (QueryCancelPending)
3238  {
3239  bool lock_timeout_occurred;
3240  bool stmt_timeout_occurred;
3241 
3242  QueryCancelPending = false;
3243 
3244  /*
3245  * If LOCK_TIMEOUT and STATEMENT_TIMEOUT indicators are both set, we
3246  * need to clear both, so always fetch both.
3247  */
3248  lock_timeout_occurred = get_timeout_indicator(LOCK_TIMEOUT, true);
3249  stmt_timeout_occurred = get_timeout_indicator(STATEMENT_TIMEOUT, true);
3250 
3251  /*
3252  * If both were set, we want to report whichever timeout completed
3253  * earlier; this ensures consistent behavior if the machine is slow
3254  * enough that the second timeout triggers before we get here. A tie
3255  * is arbitrarily broken in favor of reporting a lock timeout.
3256  */
3257  if (lock_timeout_occurred && stmt_timeout_occurred &&
3259  lock_timeout_occurred = false; /* report stmt timeout */
3260 
3261  if (lock_timeout_occurred)
3262  {
3263  LockErrorCleanup();
3264  ereport(ERROR,
3265  (errcode(ERRCODE_LOCK_NOT_AVAILABLE),
3266  errmsg("canceling statement due to lock timeout")));
3267  }
3268  if (stmt_timeout_occurred)
3269  {
3270  LockErrorCleanup();
3271  ereport(ERROR,
3272  (errcode(ERRCODE_QUERY_CANCELED),
3273  errmsg("canceling statement due to statement timeout")));
3274  }
3276  {
3277  LockErrorCleanup();
3278  ereport(ERROR,
3279  (errcode(ERRCODE_QUERY_CANCELED),
3280  errmsg("canceling autovacuum task")));
3281  }
3283  {
3284  RecoveryConflictPending = false;
3285  LockErrorCleanup();
3287  ereport(ERROR,
3288  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
3289  errmsg("canceling statement due to conflict with recovery"),
3291  }
3292 
3293  /*
3294  * If we are reading a command from the client, just ignore the cancel
3295  * request --- sending an extra error message won't accomplish
3296  * anything. Otherwise, go ahead and throw the error.
3297  */
3298  if (!DoingCommandRead)
3299  {
3300  LockErrorCleanup();
3301  ereport(ERROR,
3302  (errcode(ERRCODE_QUERY_CANCELED),
3303  errmsg("canceling statement due to user request")));
3304  }
3305  }
3306 
3308  {
3309  /*
3310  * If the GUC has been reset to zero, ignore the signal. This is
3311  * important because the GUC update itself won't disable any pending
3312  * interrupt.
3313  */
3315  ereport(FATAL,
3316  (errcode(ERRCODE_IDLE_IN_TRANSACTION_SESSION_TIMEOUT),
3317  errmsg("terminating connection due to idle-in-transaction timeout")));
3318  else
3320  }
3321 
3323  {
3324  /* As above, ignore the signal if the GUC has been reset to zero. */
3325  if (IdleSessionTimeout > 0)
3326  ereport(FATAL,
3327  (errcode(ERRCODE_IDLE_SESSION_TIMEOUT),
3328  errmsg("terminating connection due to idle-session timeout")));
3329  else
3330  IdleSessionTimeoutPending = false;
3331  }
3332 
3335 
3338 
3341 }
volatile uint32 InterruptHoldoffCount
Definition: globals.c:39
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:1156
void ProcessLogMemoryContextInterrupt(void)
Definition: mcxt.c:1041
void pgstat_report_recovery_conflict(int reason)
Definition: pgstat.c:1721
void ProcessProcSignalBarrier(void)
Definition: procsignal.c:453
volatile sig_atomic_t IdleSessionTimeoutPending
Definition: globals.c:36
int client_connection_check_interval
Definition: postgres.c:106
volatile uint32 QueryCancelHoldoffCount
Definition: globals.c:40
void proc_exit(int code)
Definition: ipc.c:104
int errcode(int sqlerrcode)
Definition: elog.c:698
BackgroundWorker * MyBgworkerEntry
Definition: postmaster.c:194
bool IsLogicalWorker(void)
Definition: worker.c:3121
bool IsBackgroundWorker
Definition: globals.c:114
int IdleSessionTimeout
Definition: proc.c:64
volatile bool ParallelMessagePending
Definition: parallel.c:115
bool ClientAuthInProgress
Definition: postmaster.c:363
bool pq_check_connection(void)
Definition: pqcomm.c:1932
#define ERROR
Definition: elog.h:46
int IdleInTransactionSessionTimeout
Definition: proc.c:63
#define FATAL
Definition: elog.h:49
void HandleParallelMessages(void)
Definition: parallel.c:1003
Definition: dest.h:89
volatile sig_atomic_t ClientConnectionLost
Definition: globals.c:34
volatile uint32 CritSectionCount
Definition: globals.c:41
volatile sig_atomic_t IdleInTransactionSessionTimeoutPending
Definition: globals.c:35
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:3448
void LockErrorCleanup(void)
Definition: proc.c:716
static ProcSignalReason RecoveryConflictReason
Definition: postgres.c:179
static bool RecoveryConflictPending
Definition: postgres.c:177
static bool RecoveryConflictRetryable
Definition: postgres.c:178
bool get_timeout_indicator(TimeoutId id, bool reset_indicator)
Definition: timeout.c:729
static int errdetail_recovery_conflict(void)
Definition: postgres.c:2436
#define ereport(elevel,...)
Definition: elog.h:157
int errmsg_internal(const char *fmt,...)
Definition: elog.c:996
void enable_timeout_after(TimeoutId id, int delay_ms)
Definition: timeout.c:524
#define Assert(condition)
Definition: c.h:804
volatile sig_atomic_t ProcDiePending
Definition: globals.c:32
volatile sig_atomic_t LogMemoryContextPending
Definition: globals.c:38
volatile sig_atomic_t ProcSignalBarrierPending
Definition: globals.c:37
static bool DoingCommandRead
Definition: postgres.c:155
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:909
bool IsLogicalLauncher(void)
Definition: launcher.c:919
CommandDest whereToSendOutput
Definition: postgres.c:92
volatile sig_atomic_t CheckClientConnectionPending
Definition: globals.c:33

◆ RecheckDataDirLockFile()

bool RecheckDataDirLockFile ( void  )

Definition at line 1458 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().

1459 {
1460  int fd;
1461  int len;
1462  long file_pid;
1463  char buffer[BLCKSZ];
1464 
1465  fd = open(DIRECTORY_LOCK_FILE, O_RDWR | PG_BINARY, 0);
1466  if (fd < 0)
1467  {
1468  /*
1469  * There are many foreseeable false-positive error conditions. For
1470  * safety, fail only on enumerated clearly-something-is-wrong
1471  * conditions.
1472  */
1473  switch (errno)
1474  {
1475  case ENOENT:
1476  case ENOTDIR:
1477  /* disaster */
1478  ereport(LOG,
1480  errmsg("could not open file \"%s\": %m",
1482  return false;
1483  default:
1484  /* non-fatal, at least for now */
1485  ereport(LOG,
1487  errmsg("could not open file \"%s\": %m; continuing anyway",
1489  return true;
1490  }
1491  }
1493  len = read(fd, buffer, sizeof(buffer) - 1);
1495  if (len < 0)
1496  {
1497  ereport(LOG,
1499  errmsg("could not read from file \"%s\": %m",
1501  close(fd);
1502  return true; /* treat read failure as nonfatal */
1503  }
1504  buffer[len] = '\0';
1505  close(fd);
1506  file_pid = atol(buffer);
1507  if (file_pid == getpid())
1508  return true; /* all is well */
1509 
1510  /* Trouble: someone's overwritten the lock file */
1511  ereport(LOG,
1512  (errmsg("lock file \"%s\" contains wrong PID: %ld instead of %ld",
1513  DIRECTORY_LOCK_FILE, file_pid, (long) getpid())));
1514  return false;
1515 }
static void pgstat_report_wait_end(void)
Definition: wait_event.h:277
#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:1271
int errcode_for_file_access(void)
Definition: elog.c:721
static void pgstat_report_wait_start(uint32 wait_event_info)
Definition: wait_event.h:261
#define ereport(elevel,...)
Definition: elog.h:157
int errmsg(const char *fmt,...)
Definition: elog.c:909
#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 3419 of file postgres.c.

References stack_base_ptr.

3420 {
3421 #if defined(__ia64__) || defined(__ia64)
3422  stack_base_ptr = base.stack_base_ptr;
3423  register_stack_base_ptr = base.register_stack_base_ptr;
3424 #else
3425  stack_base_ptr = base;
3426 #endif
3427 }
char * stack_base_ptr
Definition: postgres.c:135

◆ set_stack_base()

pg_stack_base_t set_stack_base ( void  )

Definition at line 3388 of file postgres.c.

References stack_base_ptr.

Referenced by InitPostmasterChild(), and PostmasterMain().

3389 {
3390  char stack_base;
3391  pg_stack_base_t old;
3392 
3393 #if defined(__ia64__) || defined(__ia64)
3394  old.stack_base_ptr = stack_base_ptr;
3395  old.register_stack_base_ptr = register_stack_base_ptr;
3396 #else
3397  old = stack_base_ptr;
3398 #endif
3399 
3400  /* Set up reference point for stack depth checking */
3401  stack_base_ptr = &stack_base;
3402 #if defined(__ia64__) || defined(__ia64)
3403  register_stack_base_ptr = ia64_get_bsp();
3404 #endif
3405 
3406  return old;
3407 }
char * stack_base_ptr
Definition: postgres.c:135
char * pg_stack_base_t
Definition: miscadmin.h:276

◆ SetCurrentRoleId()

void SetCurrentRoleId ( Oid  roleid,
bool  is_superuser 
)

Definition at line 858 of file miscinit.c.

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

Referenced by assign_role(), and ParallelWorkerMain().

859 {
860  /*
861  * Get correct info if it's SET ROLE NONE
862  *
863  * If SessionUserId hasn't been set yet, just do nothing --- the eventual
864  * SetSessionUserId call will fix everything. This is needed since we
865  * will get called during GUC initialization.
866  */
867  if (!OidIsValid(roleid))
868  {
870  return;
871 
872  roleid = SessionUserId;
874 
875  SetRoleIsActive = false;
876  }
877  else
878  SetRoleIsActive = true;
879 
880  SetOuterUserId(roleid);
881 
882  SetConfigOption("is_superuser",
883  is_superuser ? "on" : "off",
885 }
static Oid SessionUserId
Definition: miscinit.c:459
static void SetOuterUserId(Oid userid)
Definition: miscinit.c:497
#define OidIsValid(objectId)
Definition: c.h:710
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:8103
static bool SetRoleIsActive
Definition: miscinit.c:470
static bool SessionUserIsSuperuser
Definition: miscinit.c:465
static bool is_superuser(Archive *fout)
Definition: pg_dump.c:4342

◆ SetDatabasePath()

void SetDatabasePath ( const char *  path)

Definition at line 291 of file miscinit.c.

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

Referenced by InitPostgres().

292 {
293  /* This should happen only once per process */
296 }
MemoryContext TopMemoryContext
Definition: mcxt.c:48
char * DatabasePath
Definition: globals.c:96
#define Assert(condition)
Definition: c.h:804
char * MemoryContextStrdup(MemoryContext context, const char *string)
Definition: mcxt.c:1286

◆ SetDataDir()

void SetDataDir ( const char *  dir)

Definition at line 397 of file miscinit.c.

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

Referenced by PostmasterMarkPIDForWorkerNotify(), and SelectConfigFiles().

398 {
399  char *new;
400 
401  AssertArg(dir);
402 
403  /* If presented path is relative, convert to absolute */
404  new = make_absolute_path(dir);
405 
406  if (DataDir)
407  free(DataDir);
408  DataDir = new;
409 }
char * make_absolute_path(const char *path)
Definition: path.c:608
#define AssertArg(condition)
Definition: c.h:806
#define free(a)
Definition: header.h:65
char * DataDir
Definition: globals.c:65

◆ SetSessionAuthorization()

void SetSessionAuthorization ( Oid  userid,
bool  is_superuser 
)

Definition at line 812 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().

813 {
814  /* Must have authenticated already, else can't make permission check */
816 
817  if (userid != AuthenticatedUserId &&
819  ereport(ERROR,
820  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
821  errmsg("permission denied to set session authorization")));
822 
824 
825  SetConfigOption("is_superuser",
826  is_superuser ? "on" : "off",
828 }
#define AssertState(condition)
Definition: c.h:807
int errcode(int sqlerrcode)
Definition: elog.c:698
#define OidIsValid(objectId)
Definition: c.h:710
#define ERROR
Definition: elog.h:46
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:8103
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:464
#define ereport(elevel,...)
Definition: elog.h:157
static bool is_superuser(Archive *fout)
Definition: pg_dump.c:4342
int errmsg(const char *fmt,...)
Definition: elog.c:909
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:520
static Oid AuthenticatedUserId
Definition: miscinit.c:458

◆ SetUserIdAndContext()

void SetUserIdAndContext ( Oid  userid,
bool  sec_def_context 
)

Definition at line 639 of file miscinit.c.

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

640 {
641  /* We throw the same error SET ROLE would. */
643  ereport(ERROR,
644  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
645  errmsg("cannot set parameter \"%s\" within security-restricted operation",
646  "role")));
647  CurrentUserId = userid;
648  if (sec_def_context)
650  else
652 }
int errcode(int sqlerrcode)
Definition: elog.c:698
#define ERROR
Definition: elog.h:46
static int SecurityRestrictionContext
Definition: miscinit.c:467
#define SECURITY_LOCAL_USERID_CHANGE
Definition: miscadmin.h:299
#define ereport(elevel,...)
Definition: elog.h:157
static Oid CurrentUserId
Definition: miscinit.c:461
bool InSecurityRestrictedOperation(void)
Definition: miscinit.c:610
int errmsg(const char *fmt,...)
Definition: elog.c:909

◆ SetUserIdAndSecContext()

void SetUserIdAndSecContext ( Oid  userid,
int  sec_context 
)

◆ stack_is_too_deep()

bool stack_is_too_deep ( void  )

Definition at line 3455 of file postgres.c.

References max_stack_depth_bytes, and stack_base_ptr.

Referenced by check_stack_depth(), and rstacktoodeep().

3456 {
3457  char stack_top_loc;
3458  long stack_depth;
3459 
3460  /*
3461  * Compute distance from reference point to my local variables
3462  */
3463  stack_depth = (long) (stack_base_ptr - &stack_top_loc);
3464 
3465  /*
3466  * Take abs value, since stacks grow up on some machines, down on others
3467  */
3468  if (stack_depth < 0)
3469  stack_depth = -stack_depth;
3470 
3471  /*
3472  * Trouble?
3473  *
3474  * The test on stack_base_ptr prevents us from erroring out if called
3475  * during process setup or in a non-backend process. Logically it should
3476  * be done first, but putting it here avoids wasting cycles during normal
3477  * cases.
3478  */
3479  if (stack_depth > max_stack_depth_bytes &&
3480  stack_base_ptr != NULL)
3481  return true;
3482 
3483  /*
3484  * On IA64 there is a separate "register" stack that requires its own
3485  * independent check. For this, we have to measure the change in the
3486  * "BSP" pointer from PostgresMain to here. Logic is just as above,
3487  * except that we know IA64's register stack grows up.
3488  *
3489  * Note we assume that the same max_stack_depth applies to both stacks.
3490  */
3491 #if defined(__ia64__) || defined(__ia64)
3492  stack_depth = (long) (ia64_get_bsp() - register_stack_base_ptr);
3493 
3494  if (stack_depth > max_stack_depth_bytes &&
3495  register_stack_base_ptr != NULL)
3496  return true;
3497 #endif /* IA64 */
3498 
3499  return false;
3500 }
static long max_stack_depth_bytes
Definition: postgres.c:127
char * stack_base_ptr
Definition: postgres.c:135

◆ 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_log_backend_memory_contexts(), 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:478
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_ext(), 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:654
#define OidIsValid(objectId)
Definition: c.h:710
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:551
bool IsUnderPostmaster
Definition: globals.c:112
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:411
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 217 of file miscinit.c.

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

Referenced by AuxiliaryProcKill(), and ProcKill().

218 {
220  Assert(MyProc != NULL && MyLatch == &MyProc->procLatch);
221 
223 
224  if (FeBeWaitSet)
226  MyLatch);
227 
228  SetLatch(MyLatch);
229 }
PGPROC * MyProc
Definition: proc.c:68
#define FeBeWaitSetLatchPos
Definition: libpq.h:55
void ModifyWaitEvent(WaitEventSet *set, int pos, uint32 events, Latch *latch)
Definition: latch.c:948
WaitEventSet * FeBeWaitSet
Definition: pqcomm.c:168
void SetLatch(Latch *latch)
Definition: latch.c:567
Latch procLatch
Definition: proc.h:130
static Latch LocalLatchData
Definition: miscinit.c:67
#define Assert(condition)
Definition: c.h:804
struct Latch * MyLatch
Definition: globals.c:57
#define WL_LATCH_SET
Definition: latch.h:125

◆ SwitchToSharedLatch()

void SwitchToSharedLatch ( void  )

Definition at line 197 of file miscinit.c.

References Assert, FeBeWaitSet, FeBeWaitSetLatchPos, 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  MyLatch);
207 
208  /*
209  * Set the shared latch as the local one might have been set. This
210  * shouldn't normally be necessary as code is supposed to check the
211  * condition before waiting for the latch, but a bit care can't hurt.
212  */
213  SetLatch(MyLatch);
214 }
PGPROC * MyProc
Definition: proc.c:68
#define FeBeWaitSetLatchPos
Definition: libpq.h:55
void ModifyWaitEvent(WaitEventSet *set, int pos, uint32 events, Latch *latch)
Definition: latch.c:948
WaitEventSet * FeBeWaitSet
Definition: pqcomm.c:168
void SetLatch(Latch *latch)
Definition: latch.c:567
Latch procLatch
Definition: proc.h:130
static Latch LocalLatchData
Definition: miscinit.c:67
#define Assert(condition)
Definition: c.h:804
struct Latch * MyLatch
Definition: globals.c:57
#define WL_LATCH_SET
Definition: latch.h:125

◆ TouchSocketLockFiles()

void TouchSocketLockFiles ( void  )

Definition at line 1302 of file miscinit.c.

References DIRECTORY_LOCK_FILE, and lfirst.

Referenced by ServerLoop().

1303 {
1304  ListCell *l;
1305 
1306  foreach(l, lock_files)
1307  {
1308  char *socketLockFile = (char *) lfirst(l);
1309 
1310  /* No need to touch the data directory lock file, we trust */
1311  if (strcmp(socketLockFile, DIRECTORY_LOCK_FILE) == 0)
1312  continue;
1313 
1314  /* we just ignore any error here */
1315  (void) utime(socketLockFile, NULL);
1316  }
1317 }
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 3609 of file elog.c.

References LOG, and trace_recovery_messages.

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

3610 {
3611  if (trace_level < LOG &&
3612  trace_level >= trace_recovery_messages)
3613  return LOG;
3614 
3615  return trace_level;
3616 }
#define LOG
Definition: elog.h:26
int trace_recovery_messages
Definition: guc.c:574

◆ ValidatePgVersion()

void ValidatePgVersion ( const char *  path)

Definition at line 1530 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().

1531 {
1532  char full_path[MAXPGPATH];
1533  FILE *file;
1534  int ret;
1535  long file_major;
1536  long my_major;
1537  char *endptr;
1538  char file_version_string[64];
1539  const char *my_version_string = PG_VERSION;
1540 
1541  my_major = strtol(my_version_string, &endptr, 10);
1542 
1543  snprintf(full_path, sizeof(full_path), "%s/PG_VERSION", path);
1544 
1545  file = AllocateFile(full_path, "r");
1546  if (!file)
1547  {
1548  if (errno == ENOENT)
1549  ereport(FATAL,
1550  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1551  errmsg("\"%s\" is not a valid data directory",
1552  path),
1553  errdetail("File \"%s\" is missing.", full_path)));
1554  else
1555  ereport(FATAL,
1557  errmsg("could not open file \"%s\": %m", full_path)));
1558  }
1559 
1560  file_version_string[0] = '\0';
1561  ret = fscanf(file, "%63s", file_version_string);
1562  file_major = strtol(file_version_string, &endptr, 10);
1563 
1564  if (ret != 1 || endptr == file_version_string)
1565  ereport(FATAL,
1566  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1567  errmsg("\"%s\" is not a valid data directory",
1568  path),
1569  errdetail("File \"%s\" does not contain valid data.",
1570  full_path),
1571  errhint("You might need to initdb.")));
1572 
1573  FreeFile(file);
1574 
1575  if (my_major != file_major)
1576  ereport(FATAL,
1577  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1578  errmsg("database files are incompatible with server"),
1579  errdetail("The data directory was initialized by PostgreSQL version %s, "
1580  "which is not compatible with this version %s.",
1581  file_version_string, my_version_string)));
1582 }
int errhint(const char *fmt,...)
Definition: elog.c:1156
int errcode(int sqlerrcode)
Definition: elog.c:698
#define FATAL
Definition: elog.h:49
#define MAXPGPATH
int errdetail(const char *fmt,...)
Definition: elog.c:1042
int errcode_for_file_access(void)
Definition: elog.c:721
FILE * AllocateFile(const char *name, const char *mode)
Definition: fd.c:2373
#define ereport(elevel,...)
Definition: elog.h:157
int FreeFile(FILE *file)
Definition: fd.c:2572
int errmsg(const char *fmt,...)
Definition: elog.c:909
#define snprintf
Definition: port.h:216

Variable Documentation

◆ allowSystemTableMods

◆ CheckClientConnectionPending

PGDLLIMPORT volatile sig_atomic_t CheckClientConnectionPending

Definition at line 33 of file globals.c.

Referenced by ClientCheckTimeoutHandler(), and ProcessInterrupts().

◆ ClientConnectionLost

PGDLLIMPORT volatile sig_atomic_t ClientConnectionLost

Definition at line 34 of file globals.c.

Referenced by internal_flush(), and ProcessInterrupts().

◆ CritSectionCount

◆ data_directory_mode

PGDLLIMPORT int data_directory_mode

Definition at line 71 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 116 of file globals.c.

Referenced by errstart(), and HandleCheckpointerInterrupts().

◆ hash_mem_multiplier

PGDLLIMPORT double hash_mem_multiplier

Definition at line 125 of file globals.c.

Referenced by get_hash_mem().

◆ IdleInTransactionSessionTimeoutPending

PGDLLIMPORT volatile sig_atomic_t IdleInTransactionSessionTimeoutPending

Definition at line 35 of file globals.c.

Referenced by IdleInTransactionSessionTimeoutHandler(), and ProcessInterrupts().

◆ IdleSessionTimeoutPending

PGDLLIMPORT volatile sig_atomic_t IdleSessionTimeoutPending

Definition at line 36 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 112 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(), start_xact_command(), StartupXLOG(), superuser_arg(), SyncScanShmemInit(), TwoPhaseShmemInit(), verify_dictoptions(), WaitLatch(), WaitLatchOrSocket(), XLogArchiveNotify(), XLogPrefetchIncrement(), XLogRecGetFullXid(), and XLogWrite().

◆ local_preload_libraries_string

char* local_preload_libraries_string

Definition at line 1595 of file miscinit.c.

Referenced by process_session_preload_libraries().

◆ LogMemoryContextPending

PGDLLIMPORT volatile sig_atomic_t LogMemoryContextPending

◆ maintenance_work_mem

◆ max_parallel_maintenance_workers

PGDLLIMPORT int max_parallel_maintenance_workers

Definition at line 127 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 138 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 71 of file bootstrap.c.

Referenced by AuxiliaryProcessMain(), and pgstat_beinit().

◆ MyBackendType

◆ MyCancelKey

◆ MyDatabaseId

PGDLLIMPORT Oid MyDatabaseId

Definition at line 88 of file globals.c.

Referenced by AfterTriggerSetState(), AlterDatabase(), AlterObjectRename_internal(), AlterPublicationOwner_internal(), AlterSchemaOwner_internal(), AlterSubscription(), AlterSubscriptionOwner(), asyncQueueNotificationToEntry(), asyncQueueProcessPageEntries(), ATExecDetachPartition(), 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(), initialize_acl(), InitializeParallelDSM(), InitPostgres(), InitTempTableNamespace(), lazy_check_wraparound_failsafe(), 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_bestart(), pgstat_drop_database(), pgstat_fetch_stat_funcentry(), pgstat_fetch_stat_tabentry(), pgstat_report_analyze(), pgstat_report_anl_ancestors(), 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_shutdown_hook(), pgstat_vacuum_stat(), PrepareToInvalidateCacheTuple(), PrepareTransaction(), ProcArrayInstallImportedXmin(), ProcArrayInstallRestoredXmin(), RangeVarGetAndCheckCreationNamespace(), RangeVarGetCreationNamespace(), RangeVarGetRelidExtended(), recheck_relation_needs_vacanalyze(), ReindexMultipleTables(), RelationInitLockInfo(), RelationInitPhysicalAddr(), RelationMapFinishBootstrap(), RenameDatabase(), RenameSchema(), ReplicationSlotCreate(), roles_is_member_of(), 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 57 of file globals.c.

Referenced by ApplyLauncherMain(), autoprewarm_main(), AutoVacLauncherMain(), avl_sigusr2_handler(), BackgroundWriterMain(), be_tls_open_server(), CheckDeadLockAlert(), CheckpointerMain(), ClientCheckTimeoutHandler(), 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(), pg_wait_until_termination(), pgarch_MainLoop(), 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(), vacuum_delay_point(), wait_for_relation_state_change(), wait_for_worker_state_change(), wait_for_workers_to_become_ready(), WaitForBackgroundWorkerShutdown(), WaitForBackgroundWorkerStartup(), WaitForParallelWorkersToAttach(), WaitForParallelWorkersToFinish(), WaitForReplicationWorkerAttach(), WalRcvWaitForStartPosition(), WalReceiverMain(), WalSndLastCycleHandler(), WalSndLoop(), WalSndWaitForWal(), WalSndWriteData(), WalWriterMain(), and write_syslogger_file().

◆ MyPMChildSlot

◆ MyProcPid

PGDLLIMPORT int MyProcPid

Definition at line 43 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(), ProcessLogMemoryContextInterrupt(), 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 135 of file globals.c.

◆ OutputFileName

char OutputFileName[]

Definition at line 73 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 40 of file globals.c.

Referenced by errfinish(), and ProcessInterrupts().

◆ QueryCancelPending

◆ session_preload_libraries_string

char* session_preload_libraries_string

Definition at line 1593 of file miscinit.c.

Referenced by process_session_preload_libraries().

◆ shared_preload_libraries_string

char* shared_preload_libraries_string

Definition at line 1594 of file miscinit.c.

Referenced by process_shared_preload_libraries().

◆ trace_recovery_messages

int trace_recovery_messages

Definition at line 574 of file guc.c.

Referenced by StartupXLOG(), and trace_recovery().

◆ VacuumCostActive

◆ VacuumCostBalance

◆ VacuumCostDelay

◆ VacuumCostLimit

◆ VacuumCostPageDirty

int VacuumCostPageDirty

Definition at line 143 of file globals.c.

Referenced by MarkBufferDirty(), and MarkBufferDirtyHint().

◆ VacuumCostPageHit

int VacuumCostPageHit

Definition at line 141 of file globals.c.

Referenced by ReadBuffer_common().

◆ VacuumCostPageMiss

int VacuumCostPageMiss

Definition at line 142 of file globals.c.

Referenced by ReadBuffer_common().

◆ VacuumPageDirty

int64 VacuumPageDirty

◆ VacuumPageHit

int64 VacuumPageHit

◆ VacuumPageMiss

int64 VacuumPageMiss

◆ work_mem

PGDLLIMPORT int work_mem

Definition at line 124 of file globals.c.

Referenced by _bt_parallel_scan_and_sort(), _bt_pendingfsm_init(), _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_prefetch_recovery(), 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().