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miscadmin.h File Reference
#include "pgtime.h"
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Macros

#define PG_BACKEND_VERSIONSTR   "postgres (PostgreSQL) " PG_VERSION "\n"
 
#define InvalidPid   (-1)
 
#define CHECK_FOR_INTERRUPTS()
 
#define HOLD_INTERRUPTS()   (InterruptHoldoffCount++)
 
#define RESUME_INTERRUPTS()
 
#define HOLD_CANCEL_INTERRUPTS()   (QueryCancelHoldoffCount++)
 
#define RESUME_CANCEL_INTERRUPTS()
 
#define START_CRIT_SECTION()   (CritSectionCount++)
 
#define END_CRIT_SECTION()
 
#define USE_POSTGRES_DATES   0
 
#define USE_ISO_DATES   1
 
#define USE_SQL_DATES   2
 
#define USE_GERMAN_DATES   3
 
#define USE_XSD_DATES   4
 
#define DATEORDER_YMD   0
 
#define DATEORDER_DMY   1
 
#define DATEORDER_MDY   2
 
#define INTSTYLE_POSTGRES   0
 
#define INTSTYLE_POSTGRES_VERBOSE   1
 
#define INTSTYLE_SQL_STANDARD   2
 
#define INTSTYLE_ISO_8601   3
 
#define MAXTZLEN   10 /* max TZ name len, not counting tr. null */
 
#define SECURITY_LOCAL_USERID_CHANGE   0x0001
 
#define SECURITY_RESTRICTED_OPERATION   0x0002
 
#define SECURITY_NOFORCE_RLS   0x0004
 
#define IsBootstrapProcessingMode()   (Mode == BootstrapProcessing)
 
#define IsInitProcessingMode()   (Mode == InitProcessing)
 
#define IsNormalProcessingMode()   (Mode == NormalProcessing)
 
#define GetProcessingMode()   Mode
 
#define SetProcessingMode(mode)
 
#define AmBootstrapProcess()   (MyAuxProcType == BootstrapProcess)
 
#define AmStartupProcess()   (MyAuxProcType == StartupProcess)
 
#define AmBackgroundWriterProcess()   (MyAuxProcType == BgWriterProcess)
 
#define AmCheckpointerProcess()   (MyAuxProcType == CheckpointerProcess)
 
#define AmWalWriterProcess()   (MyAuxProcType == WalWriterProcess)
 
#define AmWalReceiverProcess()   (MyAuxProcType == WalReceiverProcess)
 
#define LOCK_FILE_LINE_PID   1
 
#define LOCK_FILE_LINE_DATA_DIR   2
 
#define LOCK_FILE_LINE_START_TIME   3
 
#define LOCK_FILE_LINE_PORT   4
 
#define LOCK_FILE_LINE_SOCKET_DIR   5
 
#define LOCK_FILE_LINE_LISTEN_ADDR   6
 
#define LOCK_FILE_LINE_SHMEM_KEY   7
 

Typedefs

typedef char * pg_stack_base_t
 
typedef enum ProcessingMode ProcessingMode
 

Enumerations

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

Functions

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

Variables

PGDLLIMPORT volatile bool InterruptPending
 
PGDLLIMPORT volatile bool QueryCancelPending
 
PGDLLIMPORT volatile bool ProcDiePending
 
PGDLLIMPORT volatile bool IdleInTransactionSessionTimeoutPending
 
volatile bool 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
 
bool ExitOnAnyError
 
PGDLLIMPORT char * DataDir
 
PGDLLIMPORT int NBuffers
 
int MaxBackends
 
int MaxConnections
 
int max_worker_processes
 
int max_parallel_workers
 
PGDLLIMPORT int MyProcPid
 
PGDLLIMPORT pg_time_t MyStartTime
 
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
 
bool allowSystemTableMods
 
PGDLLIMPORT int work_mem
 
PGDLLIMPORT int maintenance_work_mem
 
PGDLLIMPORT int replacement_sort_tuples
 
int VacuumCostPageHit
 
int VacuumCostPageMiss
 
int VacuumCostPageDirty
 
int VacuumCostLimit
 
int VacuumCostDelay
 
int VacuumPageHit
 
int VacuumPageMiss
 
int VacuumPageDirty
 
int VacuumCostBalance
 
bool VacuumCostActive
 
int trace_recovery_messages
 
char * DatabasePath
 
ProcessingMode Mode
 
AuxProcType MyAuxProcType
 
bool IgnoreSystemIndexes
 
PGDLLIMPORT bool process_shared_preload_libraries_in_progress
 
char * session_preload_libraries_string
 
char * shared_preload_libraries_string
 
char * local_preload_libraries_string
 

Macro Definition Documentation

#define AmBackgroundWriterProcess ( )    (MyAuxProcType == BgWriterProcess)

Definition at line 404 of file miscadmin.h.

Referenced by ForwardFsyncRequest().

#define AmBootstrapProcess ( )    (MyAuxProcType == BootstrapProcess)

Definition at line 402 of file miscadmin.h.

#define AmCheckpointerProcess ( )    (MyAuxProcType == CheckpointerProcess)
#define AmStartupProcess ( )    (MyAuxProcType == StartupProcess)

Definition at line 403 of file miscadmin.h.

Referenced by HotStandbyActiveInReplay(), and mdinit().

#define AmWalReceiverProcess ( )    (MyAuxProcType == WalReceiverProcess)

Definition at line 407 of file miscadmin.h.

Referenced by get_sync_bit().

#define AmWalWriterProcess ( )    (MyAuxProcType == WalWriterProcess)

Definition at line 406 of file miscadmin.h.

#define CHECK_FOR_INTERRUPTS ( )
Value:
do { \
} while(0)
PGDLLIMPORT volatile bool InterruptPending
Definition: globals.c:29
void ProcessInterrupts(void)
Definition: postgres.c:2825

Definition at line 97 of file miscadmin.h.

Referenced by _bt_buildadd(), _bt_steppage(), _bt_walk_left(), _crypt_blowfish_rn(), _hash_metapinit(), _hash_readnext(), _hash_readprev(), add_partial_path(), add_path(), analyze_rel(), ATRewriteTable(), backend_read_statsfile(), BipartiteMatch(), blgetbitmap(), bloomBuildCallback(), brin_evacuate_page(), brin_getinsertbuffer(), brin_vacuum_scan(), bringetbitmap(), brinGetTupleForHeapBlock(), brininsert(), brinsummarize(), btree_xlog_delete_get_latestRemovedXid(), calculate_database_size(), calculate_relation_size(), calculate_tablespace_size(), ClientAuthentication(), cluster_rel(), collect_corrupt_items(), collect_visibility_data(), ConditionVariableSleep(), copy_file(), copy_heap_data(), copy_messages(), copy_relation_data(), copydir(), CopyFrom(), CopyTo(), count_nondeletable_pages(), CountOtherDBBackends(), db_dir_size(), DecodingContextFindStartpoint(), do_autovacuum(), do_des(), do_pg_stop_backup(), dofindsubquery(), errfinish(), exec_execute_message(), exec_parse_message(), exec_replication_command(), exec_simple_query(), exec_stmt(), exec_stmts(), ExecHashJoin(), ExecMakeTableFunctionResult(), ExecProcNode(), ExecScan(), fsm_vacuum_page(), gather_readnext(), get_query_def(), get_rule_expr(), get_setop_query(), GetMultiXactIdMembers(), GetNewOidWithIndex(), GetNewRelFileNode(), getNextNearest(), ginbuild(), ginBuildCallback(), gingetbitmap(), gistgetbitmap(), gistgettuple(), gistProcessItup(), HandleFunctionRequest(), heap_lock_updated_tuple_rec(), heap_multi_insert(), heapgetpage(), hypothetical_dense_rank_final(), hypothetical_rank_common(), ident_inet(), IndexBuildHeapRangeScan(), IndexCheckExclusion(), interactive_getc(), lazy_truncate_heap(), libpqrcv_PQexec(), lseg_inside_poly(), make_bounded_heap(), mode_final(), mq_putmessage(), MultiExecBitmapIndexScan(), MultiExecProcNode(), numeric_fac(), pg_logical_slot_get_changes_guts(), pg_prewarm(), pg_sleep(), pg_visibility_map_summary(), pgfdw_get_result(), PGSemaphoreLock(), pgstat_collect_oids(), pgstat_get_backend_current_activity(), pgstat_heap(), pgstat_index(), pgstat_read_current_status(), pgstat_vacuum_stat(), pgstatindex_impl(), plperl_spi_prepare(), PortalRunMulti(), postgresAcquireSampleRowsFunc(), PostgresMain(), predicate_implied_by_simple_clause(), predicate_refuted_by_simple_clause(), ProcessClientReadInterrupt(), ProcessClientWriteInterrupt(), ProcessWalRcvInterrupts(), ProcSleep(), ProcWaitForSignal(), puttuple_common(), random_relative_prime(), RE_compile_and_cache(), RE_wchar_execute(), read_local_xlog_page(), refresh_matview_datafill(), regexp_fixed_prefix(), replace_text(), replace_text_regexp(), replorigin_create(), RequestCheckpoint(), revmap_extend_and_get_blkno(), sendAuthRequest(), sendDir(), set_rtable_names(), shm_mq_receive_bytes(), shm_mq_send_bytes(), shm_mq_wait_internal(), spgdoinsert(), spgWalk(), statapprox_heap(), storeQueryResult(), summarize_range(), tablesample_getnext(), test_shm_mq_pipelined(), text_to_array_internal(), throttle(), toast_save_datum(), tuplesort_heap_insert(), tuplesort_heap_replace_top(), tuplesort_skiptuples(), tuplestore_skiptuples(), vacuum_delay_point(), vacuum_rel(), validate_index_heapscan(), wait_for_workers_to_become_ready(), wait_pid(), WaitForBackgroundWorkerShutdown(), WaitForBackgroundWorkerStartup(), WaitForParallelWorkersToFinish(), walkdir(), WalSndLoop(), WalSndWaitForWal(), and WalSndWriteData().

#define DATEORDER_DMY   1
#define DATEORDER_MDY   2

Definition at line 218 of file miscadmin.h.

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

#define DATEORDER_YMD   0

Definition at line 216 of file miscadmin.h.

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

#define END_CRIT_SECTION ( )
Value:
do { \
} while(0)
#define Assert(condition)
Definition: c.h:667
PGDLLIMPORT volatile uint32 CritSectionCount
Definition: globals.c:36

Definition at line 132 of file miscadmin.h.

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

#define GetProcessingMode ( )    Mode

Definition at line 369 of file miscadmin.h.

#define HOLD_CANCEL_INTERRUPTS ( )    (QueryCancelHoldoffCount++)

Definition at line 122 of file miscadmin.h.

Referenced by CopyGetData(), and SocketBackend().

#define INTSTYLE_ISO_8601   3

Definition at line 233 of file miscadmin.h.

Referenced by EncodeInterval().

#define INTSTYLE_POSTGRES   0

Definition at line 230 of file miscadmin.h.

Referenced by EncodeInterval(), and set_transmission_modes().

#define INTSTYLE_POSTGRES_VERBOSE   1

Definition at line 231 of file miscadmin.h.

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

#define INTSTYLE_SQL_STANDARD   2

Definition at line 232 of file miscadmin.h.

Referenced by DecodeInterval(), and EncodeInterval().

#define IsInitProcessingMode ( )    (Mode == InitProcessing)
#define IsNormalProcessingMode ( )    (Mode == NormalProcessing)
#define LOCK_FILE_LINE_DATA_DIR   2

Definition at line 447 of file miscadmin.h.

#define LOCK_FILE_LINE_LISTEN_ADDR   6

Definition at line 451 of file miscadmin.h.

Referenced by PostmasterMain(), and test_postmaster_connection().

#define LOCK_FILE_LINE_PID   1

Definition at line 446 of file miscadmin.h.

Referenced by test_postmaster_connection().

#define LOCK_FILE_LINE_PORT   4

Definition at line 449 of file miscadmin.h.

Referenced by get_sock_dir(), and test_postmaster_connection().

#define LOCK_FILE_LINE_SHMEM_KEY   7

Definition at line 452 of file miscadmin.h.

Referenced by CreateLockFile(), and InternalIpcMemoryCreate().

#define LOCK_FILE_LINE_SOCKET_DIR   5

Definition at line 450 of file miscadmin.h.

Referenced by get_sock_dir(), PostmasterMain(), and test_postmaster_connection().

#define LOCK_FILE_LINE_START_TIME   3

Definition at line 448 of file miscadmin.h.

Referenced by test_postmaster_connection().

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

Definition at line 237 of file miscadmin.h.

Referenced by abstime2tm(), and EncodeDateTime().

#define PG_BACKEND_VERSIONSTR   "postgres (PostgreSQL) " PG_VERSION "\n"

Definition at line 29 of file miscadmin.h.

Referenced by adjust_data_dir(), do_start(), getInstallationPaths(), and setup_bin_paths().

#define RESUME_CANCEL_INTERRUPTS ( )
Value:
do { \
} while(0)
PGDLLIMPORT volatile uint32 QueryCancelHoldoffCount
Definition: globals.c:35
#define Assert(condition)
Definition: c.h:667

Definition at line 124 of file miscadmin.h.

Referenced by CopyGetData(), and SocketBackend().

#define SECURITY_NOFORCE_RLS   0x0004

Definition at line 293 of file miscadmin.h.

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

#define SECURITY_RESTRICTED_OPERATION   0x0002
#define SetProcessingMode (   mode)
#define START_CRIT_SECTION ( )    (CritSectionCount++)

Definition at line 130 of file miscadmin.h.

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

#define USE_GERMAN_DATES   3

Definition at line 212 of file miscadmin.h.

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

#define USE_ISO_DATES   1
#define USE_POSTGRES_DATES   0

Definition at line 209 of file miscadmin.h.

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

#define USE_SQL_DATES   2

Definition at line 211 of file miscadmin.h.

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

#define USE_XSD_DATES   4

Typedef Documentation

Definition at line 268 of file miscadmin.h.

Enumeration Type Documentation

Enumerator
NotAnAuxProcess 
CheckerProcess 
BootstrapProcess 
StartupProcess 
BgWriterProcess 
CheckpointerProcess 
WalWriterProcess 
WalReceiverProcess 
NUM_AUXPROCTYPES 

Definition at line 386 of file miscadmin.h.

Enumerator
BootstrapProcessing 
InitProcessing 
NormalProcessing 

Definition at line 356 of file miscadmin.h.

357 {
358  BootstrapProcessing, /* bootstrap creation of template database */
359  InitProcessing, /* initializing system */
360  NormalProcessing /* normal processing */
ProcessingMode
Definition: miscadmin.h:356

Function Documentation

void AddToDataDirLockFile ( int  target_line,
const char *  str 
)

Definition at line 1148 of file miscinit.c.

References close, DIRECTORY_LOCK_FILE, elog, ereport, errcode_for_file_access(), errmsg(), fd(), LOG, NULL, PG_BINARY, pg_fsync(), read, snprintf(), and write.

Referenced by InternalIpcMemoryCreate(), and PostmasterMain().

1149 {
1150  int fd;
1151  int len;
1152  int lineno;
1153  char *srcptr;
1154  char *destptr;
1155  char srcbuffer[BLCKSZ];
1156  char destbuffer[BLCKSZ];
1157 
1158  fd = open(DIRECTORY_LOCK_FILE, O_RDWR | PG_BINARY, 0);
1159  if (fd < 0)
1160  {
1161  ereport(LOG,
1163  errmsg("could not open file \"%s\": %m",
1165  return;
1166  }
1167  len = read(fd, srcbuffer, sizeof(srcbuffer) - 1);
1168  if (len < 0)
1169  {
1170  ereport(LOG,
1172  errmsg("could not read from file \"%s\": %m",
1174  close(fd);
1175  return;
1176  }
1177  srcbuffer[len] = '\0';
1178 
1179  /*
1180  * Advance over lines we are not supposed to rewrite, then copy them to
1181  * destbuffer.
1182  */
1183  srcptr = srcbuffer;
1184  for (lineno = 1; lineno < target_line; lineno++)
1185  {
1186  if ((srcptr = strchr(srcptr, '\n')) == NULL)
1187  {
1188  elog(LOG, "incomplete data in \"%s\": found only %d newlines while trying to add line %d",
1189  DIRECTORY_LOCK_FILE, lineno - 1, target_line);
1190  close(fd);
1191  return;
1192  }
1193  srcptr++;
1194  }
1195  memcpy(destbuffer, srcbuffer, srcptr - srcbuffer);
1196  destptr = destbuffer + (srcptr - srcbuffer);
1197 
1198  /*
1199  * Write or rewrite the target line.
1200  */
1201  snprintf(destptr, destbuffer + sizeof(destbuffer) - destptr, "%s\n", str);
1202  destptr += strlen(destptr);
1203 
1204  /*
1205  * If there are more lines in the old file, append them to destbuffer.
1206  */
1207  if ((srcptr = strchr(srcptr, '\n')) != NULL)
1208  {
1209  srcptr++;
1210  snprintf(destptr, destbuffer + sizeof(destbuffer) - destptr, "%s",
1211  srcptr);
1212  }
1213 
1214  /*
1215  * And rewrite the data. Since we write in a single kernel call, this
1216  * update should appear atomic to onlookers.
1217  */
1218  len = strlen(destbuffer);
1219  errno = 0;
1220  if (lseek(fd, (off_t) 0, SEEK_SET) != 0 ||
1221  (int) write(fd, destbuffer, len) != len)
1222  {
1223  /* if write didn't set errno, assume problem is no disk space */
1224  if (errno == 0)
1225  errno = ENOSPC;
1226  ereport(LOG,
1228  errmsg("could not write to file \"%s\": %m",
1230  close(fd);
1231  return;
1232  }
1233  if (pg_fsync(fd) != 0)
1234  {
1235  ereport(LOG,
1237  errmsg("could not write to file \"%s\": %m",
1239  }
1240  if (close(fd) != 0)
1241  {
1242  ereport(LOG,
1244  errmsg("could not write to file \"%s\": %m",
1246  }
1247 }
#define write(a, b, c)
Definition: win32.h:19
#define DIRECTORY_LOCK_FILE
Definition: miscinit.c:53
int snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3
#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:1034
int errcode_for_file_access(void)
Definition: elog.c:598
#define ereport(elevel, rest)
Definition: elog.h:122
#define NULL
Definition: c.h:226
int errmsg(const char *fmt,...)
Definition: elog.c:797
int pg_fsync(int fd)
Definition: fd.c:326
#define elog
Definition: elog.h:219
#define close(a)
Definition: win32.h:17
#define read(a, b, c)
Definition: win32.h:18
bool BackupInProgress ( void  )

Definition at line 10994 of file xlog.c.

References BACKUP_LABEL_FILE.

Referenced by pg_is_in_backup(), and PostmasterStateMachine().

10995 {
10996  struct stat stat_buf;
10997 
10998  return (stat(BACKUP_LABEL_FILE, &stat_buf) == 0);
10999 }
struct stat stat_buf
Definition: pg_standby.c:101
#define BACKUP_LABEL_FILE
Definition: xlog.h:289
void BaseInit ( void  )

Definition at line 517 of file postinit.c.

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

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

518 {
519  /*
520  * Attach to shared memory and semaphores, and initialize our
521  * input/output/debugging file descriptors.
522  */
524  DebugFileOpen();
525 
526  /* Do local initialization of file, storage and buffer managers */
527  InitFileAccess();
528  smgrinit();
530 }
static void InitCommunication(void)
Definition: postinit.c:409
void InitBufferPoolAccess(void)
Definition: bufmgr.c:2420
void DebugFileOpen(void)
Definition: elog.c:1863
void smgrinit(void)
Definition: smgr.c:102
void InitFileAccess(void)
Definition: fd.c:720
void CancelBackup ( void  )

Definition at line 11014 of file xlog.c.

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

Referenced by PostmasterStateMachine().

11015 {
11016  struct stat stat_buf;
11017 
11018  /* if the backup_label file is not there, return */
11019  if (stat(BACKUP_LABEL_FILE, &stat_buf) < 0)
11020  return;
11021 
11022  /* remove leftover file from previously canceled backup if it exists */
11024 
11026  {
11027  ereport(WARNING,
11029  errmsg("online backup mode was not canceled"),
11030  errdetail("File \"%s\" could not be renamed to \"%s\": %m.",
11032  return;
11033  }
11034 
11035  /* if the tablespace_map file is not there, return */
11036  if (stat(TABLESPACE_MAP, &stat_buf) < 0)
11037  {
11038  ereport(LOG,
11039  (errmsg("online backup mode canceled"),
11040  errdetail("File \"%s\" was renamed to \"%s\".",
11042  return;
11043  }
11044 
11045  /* remove leftover file from previously canceled backup if it exists */
11047 
11049  {
11050  ereport(LOG,
11051  (errmsg("online backup mode canceled"),
11052  errdetail("Files \"%s\" and \"%s\" were renamed to "
11053  "\"%s\" and \"%s\", respectively.",
11056  }
11057  else
11058  {
11059  ereport(WARNING,
11061  errmsg("online backup mode canceled"),
11062  errdetail("File \"%s\" was renamed to \"%s\", but "
11063  "file \"%s\" could not be renamed to \"%s\": %m.",
11066  }
11067 }
#define DEBUG1
Definition: elog.h:25
#define LOG
Definition: elog.h:26
#define BACKUP_LABEL_OLD
Definition: xlog.h:290
#define TABLESPACE_MAP
Definition: xlog.h:292
struct stat stat_buf
Definition: pg_standby.c:101
int errdetail(const char *fmt,...)
Definition: elog.c:873
int errcode_for_file_access(void)
Definition: elog.c:598
int unlink(const char *filename)
#define ereport(elevel, rest)
Definition: elog.h:122
int durable_rename(const char *oldfile, const char *newfile, int elevel)
Definition: fd.c:586
#define WARNING
Definition: elog.h:40
#define TABLESPACE_MAP_OLD
Definition: xlog.h:293
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define BACKUP_LABEL_FILE
Definition: xlog.h:289
void ChangeToDataDir ( void  )

Definition at line 114 of file miscinit.c.

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

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

115 {
117 
118  if (chdir(DataDir) < 0)
119  ereport(FATAL,
121  errmsg("could not change directory to \"%s\": %m",
122  DataDir)));
123 }
#define AssertState(condition)
Definition: c.h:670
#define FATAL
Definition: elog.h:52
int errcode_for_file_access(void)
Definition: elog.c:598
#define ereport(elevel, rest)
Definition: elog.h:122
int errmsg(const char *fmt,...)
Definition: elog.c:797
char * DataDir
Definition: globals.c:59
void check_stack_depth ( void  )

Definition at line 3102 of file postgres.c.

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

Referenced by BuildTupleRemapInfo(), clean_fakeval_intree(), clean_NOT_intree(), cntsize(), contains_required_value(), convertJsonbValue(), copyNODE(), copyObject(), Cover(), datum_to_json(), datum_to_jsonb(), dofindsubquery(), EventTriggerInvoke(), ExecInitExpr(), ExecMakeFunctionResult(), ExecMakeFunctionResultNoSets(), execute(), expression_tree_mutator(), expression_tree_walker(), fillQT(), findoprnd(), findoprnd_recurse(), flatten_grouping_sets(), FreePageManagerDumpBtree(), freetree(), generate_partition_qual(), get_query_def(), get_rule_expr(), get_setop_query(), gistSplit(), hash_range(), hk_depth_search(), infix(), inline_set_returning_function(), int_query_opr_selec(), JsonbDeepContains(), JumbleExpr(), ltree_execute(), makepol(), maketree(), MatchText(), normalize_phrase_tree(), parse_array(), parse_object(), plainnode(), plperl_hash_from_tuple(), plperl_sv_to_datum(), 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(), setPath(), split_array(), TQExamine(), TQRemap(), transformExprRecurse(), transformSetOperationTree(), TS_execute(), TS_execute_ternary(), TS_phrase_execute(), tsquery_opr_selec(), and tsquery_requires_match().

3103 {
3104  if (stack_is_too_deep())
3105  {
3106  ereport(ERROR,
3107  (errcode(ERRCODE_STATEMENT_TOO_COMPLEX),
3108  errmsg("stack depth limit exceeded"),
3109  errhint("Increase the configuration parameter \"max_stack_depth\" (currently %dkB), "
3110  "after ensuring the platform's stack depth limit is adequate.",
3111  max_stack_depth)));
3112  }
3113 }
int errhint(const char *fmt,...)
Definition: elog.c:987
int errcode(int sqlerrcode)
Definition: elog.c:575
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
int max_stack_depth
Definition: postgres.c:94
int errmsg(const char *fmt,...)
Definition: elog.c:797
bool stack_is_too_deep(void)
Definition: postgres.c:3116
void CreateDataDirLockFile ( bool  amPostmaster)

Definition at line 1072 of file miscinit.c.

References CreateLockFile(), DataDir, and DIRECTORY_LOCK_FILE.

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

1073 {
1074  CreateLockFile(DIRECTORY_LOCK_FILE, amPostmaster, "", true, DataDir);
1075 }
#define DIRECTORY_LOCK_FILE
Definition: miscinit.c:53
static void CreateLockFile(const char *filename, bool amPostmaster, const char *socketDir, bool isDDLock, const char *refName)
Definition: miscinit.c:767
char * DataDir
Definition: globals.c:59
void CreateSocketLockFile ( const char *  socketfile,
bool  amPostmaster,
const char *  socketDir 
)

Definition at line 1081 of file miscinit.c.

References CreateLockFile(), MAXPGPATH, and snprintf().

1083 {
1084  char lockfile[MAXPGPATH];
1085 
1086  snprintf(lockfile, sizeof(lockfile), "%s.lock", socketfile);
1087  CreateLockFile(lockfile, amPostmaster, socketDir, false, socketfile);
1088 }
int snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3
static void CreateLockFile(const char *filename, bool amPostmaster, const char *socketDir, bool isDDLock, const char *refName)
Definition: miscinit.c:767
#define MAXPGPATH
Oid GetAuthenticatedUserId ( void  )

Definition at line 341 of file miscinit.c.

References AssertState, AuthenticatedUserId, and OidIsValid.

Referenced by InitializeParallelDSM().

342 {
344  return AuthenticatedUserId;
345 }
#define AssertState(condition)
Definition: c.h:670
#define OidIsValid(objectId)
Definition: c.h:530
static Oid AuthenticatedUserId
Definition: miscinit.c:154
Oid GetCurrentRoleId ( void  )

Definition at line 634 of file miscinit.c.

References InvalidOid, OuterUserId, and SetRoleIsActive.

Referenced by show_role().

635 {
636  if (SetRoleIsActive)
637  return OuterUserId;
638  else
639  return InvalidOid;
640 }
static Oid OuterUserId
Definition: miscinit.c:156
#define InvalidOid
Definition: postgres_ext.h:36
static bool SetRoleIsActive
Definition: miscinit.c:166
Oid GetOuterUserId ( void  )

Definition at line 293 of file miscinit.c.

References AssertState, OidIsValid, and OuterUserId.

Referenced by DropRole(), and RenameRole().

294 {
296  return OuterUserId;
297 }
#define AssertState(condition)
Definition: c.h:670
static Oid OuterUserId
Definition: miscinit.c:156
#define OidIsValid(objectId)
Definition: c.h:530
Oid GetSessionUserId ( void  )

Definition at line 316 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().

317 {
319  return SessionUserId;
320 }
#define AssertState(condition)
Definition: c.h:670
static Oid SessionUserId
Definition: miscinit.c:155
#define OidIsValid(objectId)
Definition: c.h:530
Oid GetUserId ( void  )

Definition at line 282 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(), AlterRole(), AlterRoleSet(), AlterSchemaOwner_internal(), AlterSequence(), AlterTableMoveAll(), AlterTableSpaceOptions(), AlterTSConfiguration(), AlterTSDictionary(), AlterTypeNamespace_oid(), AlterTypeOwner(), analyze_rel(), ATExecAddColumn(), ATExecChangeOwner(), ATPrepAlterColumnType(), ATPrepSetStatistics(), ATPrepSetTableSpace(), ATSimplePermissions(), binary_upgrade_create_empty_extension(), brin_summarize_new_values(), build_join_rel(), BuildCachedPlan(), BuildDescForRelation(), BuildIndexValueDescription(), calculate_database_size(), calculate_tablespace_size(), 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(), CreateCast(), CreateConversionCommand(), createdb(), CreateEventTrigger(), CreateExtensionInternal(), CreateForeignDataWrapper(), CreateForeignServer(), CreateForeignTable(), CreateFunction(), CreateOpFamily(), CreateProceduralLanguage(), CreateRole(), CreateTableSpace(), CreateTransform(), CreateTrigger(), current_user(), currtid_byrelname(), currtid_byreloid(), currval_oid(), DefineAggregate(), DefineCollation(), DefineDomain(), DefineEnum(), DefineIndex(), DefineOpClass(), DefineOperator(), DefineOpFamily(), DefineQueryRewrite(), DefineRange(), DefineRelation(), DefineTSConfiguration(), DefineTSDictionary(), DefineType(), DelRoleMems(), do_setval(), dropdb(), DropOwnedObjects(), DropRole(), DropTableSpace(), EnableDisableRule(), ExecAlterDefaultPrivilegesStmt(), ExecAlterExtensionContentsStmt(), ExecAlterExtensionStmt(), ExecBuildSlotValueDescription(), ExecCheckRTEPerms(), ExecEvalArrayCoerceExpr(), ExecGrant_Attribute(), ExecGrant_Database(), ExecGrant_Fdw(), ExecGrant_ForeignServer(), ExecGrant_Function(), ExecGrant_Language(), ExecGrant_Largeobject(), ExecGrant_Namespace(), ExecGrant_Relation(), ExecGrant_Tablespace(), ExecGrant_Type(), ExecInitAgg(), ExecInitWindowAgg(), ExecSecLabelStmt(), ExecuteDoStmt(), ExecuteTruncate(), findRangeCanonicalFunction(), findRangeSubtypeDiffFunction(), FinishPreparedTransaction(), get_connect_string(), get_other_operator(), get_rel_from_relname(), get_rolespec_oid(), get_rolespec_tuple(), get_row_security_policies(), get_tables_to_cluster(), 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_fcache(), InitializeSearchPath(), InitPostgres(), InitTempTableNamespace(), inline_function(), inline_set_returning_function(), insert_username(), interpret_function_parameter_list(), inv_create(), LargeObjectCreate(), lastval(), lo_get_fragment_internal(), lo_read(), lo_truncate_internal(), lo_unlink(), lo_write(), LockTableAclCheck(), lookup_agg_function(), LookupCreationNamespace(), LookupExplicitNamespace(), MergeAttributes(), movedb(), nextval_internal(), OperatorCreate(), OperatorShellMake(), pg_has_role_id(), pg_has_role_name(), pg_prewarm(), pg_sequence_last_value(), pg_sequence_parameters(), pg_signal_backend(), pg_stat_get_activity(), pg_stat_get_backend_activity(), pg_stat_get_backend_activity_start(), pg_stat_get_backend_client_addr(), pg_stat_get_backend_client_port(), pg_stat_get_backend_start(), pg_stat_get_backend_wait_event(), pg_stat_get_backend_wait_event_type(), pg_stat_get_backend_xact_start(), pg_stat_get_progress_info(), pg_stat_statements_internal(), pgrowlocks(), pgss_store(), pgstat_get_backend_current_activity(), pltcl_fetch_interp(), postgresBeginDirectModify(), postgresBeginForeignModify(), postgresBeginForeignScan(), postgresGetForeignRelSize(), postgresImportForeignSchema(), PrepareTempTablespaces(), PrepareTransaction(), RangeVarCallbackForAlterRelation(), RangeVarCallbackForDropRelation(), RangeVarCallbackForPolicy(), RangeVarCallbackForReindexIndex(), RangeVarCallbackForRenameRule(), RangeVarCallbackForRenameTrigger(), RangeVarCallbackOwnsRelation(), RangeVarCallbackOwnsTable(), RangeVarGetAndCheckCreationNamespace(), ReassignOwnedObjects(), recomputeNamespacePath(), ReindexMultipleTables(), RemoveObjects(), RemoveRoleFromObjectPolicy(), renameatt_check(), RenameDatabase(), RenameSchema(), RenameTableSpace(), RenameType(), RevalidateCachedQuery(), RI_Initial_Check(), ri_ReportViolation(), select_perl_context(), superuser(), timetravel(), transformTableLikeClause(), truncate_check_rel(), user_mapping_ddl_aclcheck(), vacuum_rel(), ValidateJoinEstimator(), and ValidateRestrictionEstimator().

283 {
285  return CurrentUserId;
286 }
#define AssertState(condition)
Definition: c.h:670
#define OidIsValid(objectId)
Definition: c.h:530
static Oid CurrentUserId
Definition: miscinit.c:157
void GetUserIdAndContext ( Oid userid,
bool sec_def_context 
)

Definition at line 436 of file miscinit.c.

References CurrentUserId, and InLocalUserIdChange().

437 {
438  *userid = CurrentUserId;
439  *sec_def_context = InLocalUserIdChange();
440 }
bool InLocalUserIdChange(void)
Definition: miscinit.c:405
static Oid CurrentUserId
Definition: miscinit.c:157
void GetUserIdAndSecContext ( Oid userid,
int *  sec_context 
)
char* GetUserNameFromId ( Oid  roleid,
bool  noerr 
)

Definition at line 690 of file miscinit.c.

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

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

691 {
692  HeapTuple tuple;
693  char *result;
694 
695  tuple = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
696  if (!HeapTupleIsValid(tuple))
697  {
698  if (!noerr)
699  ereport(ERROR,
700  (errcode(ERRCODE_UNDEFINED_OBJECT),
701  errmsg("invalid role OID: %u", roleid)));
702  result = NULL;
703  }
704  else
705  {
706  result = pstrdup(NameStr(((Form_pg_authid) GETSTRUCT(tuple))->rolname));
707  ReleaseSysCache(tuple);
708  }
709  return result;
710 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
char * pstrdup(const char *in)
Definition: mcxt.c:1165
int errcode(int sqlerrcode)
Definition: elog.c:575
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:142
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:72
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1002
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define NULL
Definition: c.h:226
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define NameStr(name)
Definition: c.h:494
bool has_rolreplication ( Oid  roleid)

Definition at line 463 of file miscinit.c.

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

Referenced by check_permissions(), and InitPostgres().

464 {
465  bool result = false;
466  HeapTuple utup;
467 
468  utup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
469  if (HeapTupleIsValid(utup))
470  {
471  result = ((Form_pg_authid) GETSTRUCT(utup))->rolreplication;
472  ReleaseSysCache(utup);
473  }
474  return result;
475 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:142
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:72
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1002
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
void InitializeMaxBackends ( void  )

Definition at line 495 of file postinit.c.

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

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

496 {
497  Assert(MaxBackends == 0);
498 
499  /* the extra unit accounts for the autovacuum launcher */
502 
503  /* internal error because the values were all checked previously */
505  elog(ERROR, "too many backends configured");
506 }
#define ERROR
Definition: elog.h:43
#define MAX_BACKENDS
Definition: postmaster.h:75
int MaxBackends
Definition: globals.c:126
int MaxConnections
Definition: globals.c:123
int autovacuum_max_workers
Definition: autovacuum.c:112
#define Assert(condition)
Definition: c.h:667
int max_worker_processes
Definition: globals.c:124
#define elog
Definition: elog.h:219
void InitializeSessionUserId ( const char *  rolename,
Oid  useroid 
)

Definition at line 481 of file miscinit.c.

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

Referenced by InitPostgres().

482 {
483  HeapTuple roleTup;
484  Form_pg_authid rform;
485  char *rname;
486 
487  /*
488  * Don't do scans if we're bootstrapping, none of the system catalogs
489  * exist yet, and they should be owned by postgres anyway.
490  */
492 
493  /* call only once */
495 
496  if (rolename != NULL)
497  {
498  roleTup = SearchSysCache1(AUTHNAME, PointerGetDatum(rolename));
499  if (!HeapTupleIsValid(roleTup))
500  ereport(FATAL,
501  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
502  errmsg("role \"%s\" does not exist", rolename)));
503  }
504  else
505  {
506  roleTup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
507  if (!HeapTupleIsValid(roleTup))
508  ereport(FATAL,
509  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
510  errmsg("role with OID %u does not exist", roleid)));
511  }
512 
513  rform = (Form_pg_authid) GETSTRUCT(roleTup);
514  roleid = HeapTupleGetOid(roleTup);
515  rname = NameStr(rform->rolname);
516 
517  AuthenticatedUserId = roleid;
518  AuthenticatedUserIsSuperuser = rform->rolsuper;
519 
520  /* This sets OuterUserId/CurrentUserId too */
522 
523  /* Also mark our PGPROC entry with the authenticated user id */
524  /* (We assume this is an atomic store so no lock is needed) */
525  MyProc->roleId = roleid;
526 
527  /*
528  * These next checks are not enforced when in standalone mode, so that
529  * there is a way to recover from sillinesses like "UPDATE pg_authid SET
530  * rolcanlogin = false;".
531  */
532  if (IsUnderPostmaster)
533  {
534  /*
535  * Is role allowed to login at all?
536  */
537  if (!rform->rolcanlogin)
538  ereport(FATAL,
539  (errcode(ERRCODE_INVALID_AUTHORIZATION_SPECIFICATION),
540  errmsg("role \"%s\" is not permitted to log in",
541  rname)));
542 
543  /*
544  * Check connection limit for this role.
545  *
546  * There is a race condition here --- we create our PGPROC before
547  * checking for other PGPROCs. If two backends did this at about the
548  * same time, they might both think they were over the limit, while
549  * ideally one should succeed and one fail. Getting that to work
550  * exactly seems more trouble than it is worth, however; instead we
551  * just document that the connection limit is approximate.
552  */
553  if (rform->rolconnlimit >= 0 &&
555  CountUserBackends(roleid) > rform->rolconnlimit)
556  ereport(FATAL,
557  (errcode(ERRCODE_TOO_MANY_CONNECTIONS),
558  errmsg("too many connections for role \"%s\"",
559  rname)));
560  }
561 
562  /* Record username and superuser status as GUC settings too */
563  SetConfigOption("session_authorization", rname,
565  SetConfigOption("is_superuser",
566  AuthenticatedUserIsSuperuser ? "on" : "off",
568 
569  ReleaseSysCache(roleTup);
570 }
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define AssertState(condition)
Definition: c.h:670
PGPROC * MyProc
Definition: proc.c:67
#define PointerGetDatum(X)
Definition: postgres.h:564
Oid roleId
Definition: proc.h:104
int errcode(int sqlerrcode)
Definition: elog.c:575
#define OidIsValid(objectId)
Definition: c.h:530
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:142
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:72
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
#define FATAL
Definition: elog.h:52
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:6601
bool IsUnderPostmaster
Definition: globals.c:100
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:160
#define ereport(elevel, rest)
Definition: elog.h:122
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1002
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define NULL
Definition: c.h:226
int CountUserBackends(Oid roleid)
Definition: procarray.c:2797
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:365
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define NameStr(name)
Definition: c.h:494
#define HeapTupleGetOid(tuple)
Definition: htup_details.h:695
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:324
static Oid AuthenticatedUserId
Definition: miscinit.c:154
void InitializeSessionUserIdStandalone ( void  )

Definition at line 577 of file miscinit.c.

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

Referenced by InitPostgres().

578 {
579  /*
580  * This function should only be called in single-user mode, in autovacuum
581  * workers, and in background workers.
582  */
584 
585  /* call only once */
587 
590 
592 }
#define AssertState(condition)
Definition: c.h:670
#define OidIsValid(objectId)
Definition: c.h:530
bool IsBackgroundWorker
Definition: globals.c:102
bool IsUnderPostmaster
Definition: globals.c:100
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:160
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:2967
#define BOOTSTRAP_SUPERUSERID
Definition: pg_authid.h:104
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:324
static Oid AuthenticatedUserId
Definition: miscinit.c:154
void InitPostgres ( const char *  in_dbname,
Oid  dboid,
const char *  username,
Oid  useroid,
char *  out_dbname 
)

Definition at line 558 of file postinit.c.

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

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

560 {
561  bool bootstrap = IsBootstrapProcessingMode();
562  bool am_superuser;
563  char *fullpath;
564  char dbname[NAMEDATALEN];
565 
566  elog(DEBUG3, "InitPostgres");
567 
568  /*
569  * Add my PGPROC struct to the ProcArray.
570  *
571  * Once I have done this, I am visible to other backends!
572  */
574 
575  /*
576  * Initialize my entry in the shared-invalidation manager's array of
577  * per-backend data.
578  *
579  * Sets up MyBackendId, a unique backend identifier.
580  */
582 
583  SharedInvalBackendInit(false);
584 
585  if (MyBackendId > MaxBackends || MyBackendId <= 0)
586  elog(FATAL, "bad backend ID: %d", MyBackendId);
587 
588  /* Now that we have a BackendId, we can participate in ProcSignal */
590 
591  /*
592  * Also set up timeout handlers needed for backend operation. We need
593  * these in every case except bootstrap.
594  */
595  if (!bootstrap)
596  {
602  }
603 
604  /*
605  * bufmgr needs another initialization call too
606  */
608 
609  /*
610  * Initialize local process's access to XLOG.
611  */
612  if (IsUnderPostmaster)
613  {
614  /*
615  * The postmaster already started the XLOG machinery, but we need to
616  * call InitXLOGAccess(), if the system isn't in hot-standby mode.
617  * This is handled by calling RecoveryInProgress and ignoring the
618  * result.
619  */
620  (void) RecoveryInProgress();
621  }
622  else
623  {
624  /*
625  * We are either a bootstrap process or a standalone backend. Either
626  * way, start up the XLOG machinery, and register to have it closed
627  * down at exit.
628  */
629  StartupXLOG();
631  }
632 
633  /*
634  * Initialize the relation cache and the system catalog caches. Note that
635  * no catalog access happens here; we only set up the hashtable structure.
636  * We must do this before starting a transaction because transaction abort
637  * would try to touch these hashtables.
638  */
641  InitPlanCache();
642 
643  /* Initialize portal manager */
645 
646  /* Initialize stats collection --- must happen before first xact */
647  if (!bootstrap)
649 
650  /*
651  * Load relcache entries for the shared system catalogs. This must create
652  * at least entries for pg_database and catalogs used for authentication.
653  */
655 
656  /*
657  * Set up process-exit callback to do pre-shutdown cleanup. This is the
658  * first before_shmem_exit callback we register; thus, this will be the
659  * last thing we do before low-level modules like the buffer manager begin
660  * to close down. We need to have this in place before we begin our first
661  * transaction --- if we fail during the initialization transaction, as is
662  * entirely possible, we need the AbortTransaction call to clean up.
663  */
665 
666  /* The autovacuum launcher is done here */
668  return;
669 
670  /*
671  * Start a new transaction here before first access to db, and get a
672  * snapshot. We don't have a use for the snapshot itself, but we're
673  * interested in the secondary effect that it sets RecentGlobalXmin. (This
674  * is critical for anything that reads heap pages, because HOT may decide
675  * to prune them even if the process doesn't attempt to modify any
676  * tuples.)
677  */
678  if (!bootstrap)
679  {
680  /* statement_timestamp must be set for timeouts to work correctly */
683 
684  /*
685  * transaction_isolation will have been set to the default by the
686  * above. If the default is "serializable", and we are in hot
687  * standby, we will fail if we don't change it to something lower.
688  * Fortunately, "read committed" is plenty good enough.
689  */
691 
692  (void) GetTransactionSnapshot();
693  }
694 
695  /*
696  * Perform client authentication if necessary, then figure out our
697  * postgres user ID, and see if we are a superuser.
698  *
699  * In standalone mode and in autovacuum worker processes, we use a fixed
700  * ID, otherwise we figure it out from the authenticated user name.
701  */
702  if (bootstrap || IsAutoVacuumWorkerProcess())
703  {
705  am_superuser = true;
706  }
707  else if (!IsUnderPostmaster)
708  {
710  am_superuser = true;
711  if (!ThereIsAtLeastOneRole())
713  (errcode(ERRCODE_UNDEFINED_OBJECT),
714  errmsg("no roles are defined in this database system"),
715  errhint("You should immediately run CREATE USER \"%s\" SUPERUSER;.",
716  username != NULL ? username : "postgres")));
717  }
718  else if (IsBackgroundWorker)
719  {
720  if (username == NULL && !OidIsValid(useroid))
721  {
723  am_superuser = true;
724  }
725  else
726  {
728  am_superuser = superuser();
729  }
730  }
731  else
732  {
733  /* normal multiuser case */
734  Assert(MyProcPort != NULL);
737  am_superuser = superuser();
738  }
739 
740  /*
741  * If we're trying to shut down, only superusers can connect, and new
742  * replication connections are not allowed.
743  */
744  if ((!am_superuser || am_walsender) &&
745  MyProcPort != NULL &&
747  {
748  if (am_walsender)
749  ereport(FATAL,
750  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
751  errmsg("new replication connections are not allowed during database shutdown")));
752  else
753  ereport(FATAL,
754  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
755  errmsg("must be superuser to connect during database shutdown")));
756  }
757 
758  /*
759  * Binary upgrades only allowed super-user connections
760  */
761  if (IsBinaryUpgrade && !am_superuser)
762  {
763  ereport(FATAL,
764  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
765  errmsg("must be superuser to connect in binary upgrade mode")));
766  }
767 
768  /*
769  * The last few connections slots are reserved for superusers. Although
770  * replication connections currently require superuser privileges, we
771  * don't allow them to consume the reserved slots, which are intended for
772  * interactive use.
773  */
774  if ((!am_superuser || am_walsender) &&
775  ReservedBackends > 0 &&
777  ereport(FATAL,
778  (errcode(ERRCODE_TOO_MANY_CONNECTIONS),
779  errmsg("remaining connection slots are reserved for non-replication superuser connections")));
780 
781  /* Check replication permissions needed for walsender processes. */
782  if (am_walsender)
783  {
784  Assert(!bootstrap);
785 
786  if (!superuser() && !has_rolreplication(GetUserId()))
787  ereport(FATAL,
788  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
789  errmsg("must be superuser or replication role to start walsender")));
790  }
791 
792  /*
793  * If this is a plain walsender only supporting physical replication, we
794  * don't want to connect to any particular database. Just finish the
795  * backend startup by processing any options from the startup packet, and
796  * we're done.
797  */
799  {
800  /* process any options passed in the startup packet */
801  if (MyProcPort != NULL)
802  process_startup_options(MyProcPort, am_superuser);
803 
804  /* Apply PostAuthDelay as soon as we've read all options */
805  if (PostAuthDelay > 0)
806  pg_usleep(PostAuthDelay * 1000000L);
807 
808  /* initialize client encoding */
810 
811  /* report this backend in the PgBackendStatus array */
812  pgstat_bestart();
813 
814  /* close the transaction we started above */
816 
817  return;
818  }
819 
820  /*
821  * Set up the global variables holding database id and default tablespace.
822  * But note we won't actually try to touch the database just yet.
823  *
824  * We take a shortcut in the bootstrap case, otherwise we have to look up
825  * the db's entry in pg_database.
826  */
827  if (bootstrap)
828  {
831  }
832  else if (in_dbname != NULL)
833  {
834  HeapTuple tuple;
835  Form_pg_database dbform;
836 
837  tuple = GetDatabaseTuple(in_dbname);
838  if (!HeapTupleIsValid(tuple))
839  ereport(FATAL,
840  (errcode(ERRCODE_UNDEFINED_DATABASE),
841  errmsg("database \"%s\" does not exist", in_dbname)));
842  dbform = (Form_pg_database) GETSTRUCT(tuple);
843  MyDatabaseId = HeapTupleGetOid(tuple);
844  MyDatabaseTableSpace = dbform->dattablespace;
845  /* take database name from the caller, just for paranoia */
846  strlcpy(dbname, in_dbname, sizeof(dbname));
847  }
848  else if (OidIsValid(dboid))
849  {
850  /* caller specified database by OID */
851  HeapTuple tuple;
852  Form_pg_database dbform;
853 
854  tuple = GetDatabaseTupleByOid(dboid);
855  if (!HeapTupleIsValid(tuple))
856  ereport(FATAL,
857  (errcode(ERRCODE_UNDEFINED_DATABASE),
858  errmsg("database %u does not exist", dboid)));
859  dbform = (Form_pg_database) GETSTRUCT(tuple);
860  MyDatabaseId = HeapTupleGetOid(tuple);
861  MyDatabaseTableSpace = dbform->dattablespace;
862  Assert(MyDatabaseId == dboid);
863  strlcpy(dbname, NameStr(dbform->datname), sizeof(dbname));
864  /* pass the database name back to the caller */
865  if (out_dbname)
866  strcpy(out_dbname, dbname);
867  }
868  else
869  {
870  /*
871  * If this is a background worker not bound to any particular
872  * database, we're done now. Everything that follows only makes sense
873  * if we are bound to a specific database. We do need to close the
874  * transaction we started before returning.
875  */
876  if (!bootstrap)
878  return;
879  }
880 
881  /*
882  * Now, take a writer's lock on the database we are trying to connect to.
883  * If there is a concurrently running DROP DATABASE on that database, this
884  * will block us until it finishes (and has committed its update of
885  * pg_database).
886  *
887  * Note that the lock is not held long, only until the end of this startup
888  * transaction. This is OK since we will advertise our use of the
889  * database in the ProcArray before dropping the lock (in fact, that's the
890  * next thing to do). Anyone trying a DROP DATABASE after this point will
891  * see us in the array once they have the lock. Ordering is important for
892  * this because we don't want to advertise ourselves as being in this
893  * database until we have the lock; otherwise we create what amounts to a
894  * deadlock with CountOtherDBBackends().
895  *
896  * Note: use of RowExclusiveLock here is reasonable because we envision
897  * our session as being a concurrent writer of the database. If we had a
898  * way of declaring a session as being guaranteed-read-only, we could use
899  * AccessShareLock for such sessions and thereby not conflict against
900  * CREATE DATABASE.
901  */
902  if (!bootstrap)
905 
906  /*
907  * Now we can mark our PGPROC entry with the database ID.
908  *
909  * We assume this is an atomic store so no lock is needed; though actually
910  * things would work fine even if it weren't atomic. Anyone searching the
911  * ProcArray for this database's ID should hold the database lock, so they
912  * would not be executing concurrently with this store. A process looking
913  * for another database's ID could in theory see a chance match if it read
914  * a partially-updated databaseId value; but as long as all such searches
915  * wait and retry, as in CountOtherDBBackends(), they will certainly see
916  * the correct value on their next try.
917  */
919 
920  /*
921  * We established a catalog snapshot while reading pg_authid and/or
922  * pg_database; but until we have set up MyDatabaseId, we won't react to
923  * incoming sinval messages for unshared catalogs, so we won't realize it
924  * if the snapshot has been invalidated. Assume it's no good anymore.
925  */
927 
928  /*
929  * Recheck pg_database to make sure the target database hasn't gone away.
930  * If there was a concurrent DROP DATABASE, this ensures we will die
931  * cleanly without creating a mess.
932  */
933  if (!bootstrap)
934  {
935  HeapTuple tuple;
936 
937  tuple = GetDatabaseTuple(dbname);
938  if (!HeapTupleIsValid(tuple) ||
939  MyDatabaseId != HeapTupleGetOid(tuple) ||
940  MyDatabaseTableSpace != ((Form_pg_database) GETSTRUCT(tuple))->dattablespace)
941  ereport(FATAL,
942  (errcode(ERRCODE_UNDEFINED_DATABASE),
943  errmsg("database \"%s\" does not exist", dbname),
944  errdetail("It seems to have just been dropped or renamed.")));
945  }
946 
947  /*
948  * Now we should be able to access the database directory safely. Verify
949  * it's there and looks reasonable.
950  */
952 
953  if (!bootstrap)
954  {
955  if (access(fullpath, F_OK) == -1)
956  {
957  if (errno == ENOENT)
958  ereport(FATAL,
959  (errcode(ERRCODE_UNDEFINED_DATABASE),
960  errmsg("database \"%s\" does not exist",
961  dbname),
962  errdetail("The database subdirectory \"%s\" is missing.",
963  fullpath)));
964  else
965  ereport(FATAL,
967  errmsg("could not access directory \"%s\": %m",
968  fullpath)));
969  }
970 
971  ValidatePgVersion(fullpath);
972  }
973 
974  SetDatabasePath(fullpath);
975 
976  /*
977  * It's now possible to do real access to the system catalogs.
978  *
979  * Load relcache entries for the system catalogs. This must create at
980  * least the minimum set of "nailed-in" cache entries.
981  */
983 
984  /* set up ACL framework (so CheckMyDatabase can check permissions) */
985  initialize_acl();
986 
987  /*
988  * Re-read the pg_database row for our database, check permissions and set
989  * up database-specific GUC settings. We can't do this until all the
990  * database-access infrastructure is up. (Also, it wants to know if the
991  * user is a superuser, so the above stuff has to happen first.)
992  */
993  if (!bootstrap)
994  CheckMyDatabase(dbname, am_superuser);
995 
996  /*
997  * Now process any command-line switches and any additional GUC variable
998  * settings passed in the startup packet. We couldn't do this before
999  * because we didn't know if client is a superuser.
1000  */
1001  if (MyProcPort != NULL)
1002  process_startup_options(MyProcPort, am_superuser);
1003 
1004  /* Process pg_db_role_setting options */
1006 
1007  /* Apply PostAuthDelay as soon as we've read all options */
1008  if (PostAuthDelay > 0)
1009  pg_usleep(PostAuthDelay * 1000000L);
1010 
1011  /*
1012  * Initialize various default states that can't be set up until we've
1013  * selected the active user and gotten the right GUC settings.
1014  */
1015 
1016  /* set default namespace search path */
1018 
1019  /* initialize client encoding */
1021 
1022  /* report this backend in the PgBackendStatus array */
1023  if (!bootstrap)
1024  pgstat_bestart();
1025 
1026  /* close the transaction we started above */
1027  if (!bootstrap)
1029 }
int errhint(const char *fmt,...)
Definition: elog.c:987
BackendId MyBackendId
Definition: globals.c:72
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
struct Port * MyProcPort
Definition: globals.c:40
CAC_state canAcceptConnections
Definition: libpq-be.h:131
void SharedInvalBackendInit(bool sendOnly)
Definition: sinvaladt.c:258
#define DEBUG3
Definition: elog.h:23
Oid GetUserId(void)
Definition: miscinit.c:282
FormData_pg_database * Form_pg_database
Definition: pg_database.h:57
PGPROC * MyProc
Definition: proc.c:67
static HeapTuple GetDatabaseTuple(const char *dbname)
Definition: postinit.c:94
#define DatabaseRelationId
Definition: pg_database.h:29
void CommitTransactionCommand(void)
Definition: xact.c:2743
void ValidatePgVersion(const char *path)
Definition: miscinit.c:1332
void RelationCacheInitializePhase2(void)
Definition: relcache.c:3556
static void PerformAuthentication(Port *port)
Definition: postinit.c:183
static void LockTimeoutHandler(void)
Definition: postinit.c:1174
int errcode(int sqlerrcode)
Definition: elog.c:575
bool superuser(void)
Definition: superuser.c:47
static void CheckMyDatabase(const char *name, bool am_superuser)
Definition: postinit.c:286
void initialize_acl(void)
Definition: acl.c:4611
bool RecoveryInProgress(void)
Definition: xlog.c:7643
Snapshot GetTransactionSnapshot(void)
Definition: snapmgr.c:300
#define OidIsValid(objectId)
Definition: c.h:530
Oid GetSessionUserId(void)
Definition: miscinit.c:316
bool HaveNFreeProcs(int n)
Definition: proc.c:635
bool IsBinaryUpgrade
Definition: globals.c:101
Oid MyDatabaseTableSpace
Definition: globals.c:78
bool IsBackgroundWorker
Definition: globals.c:102
void RelationCacheInitializePhase3(void)
Definition: relcache.c:3613
#define NAMEDATALEN
bool am_walsender
Definition: walsender.c:103
void pg_usleep(long microsec)
Definition: signal.c:53
int ReservedBackends
Definition: postmaster.c:209
#define FATAL
Definition: elog.h:52
void InitializeSearchPath(void)
Definition: namespace.c:3975
int MaxBackends
Definition: globals.c:126
#define TemplateDbOid
Definition: pg_database.h:80
void on_shmem_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:348
bool IsUnderPostmaster
Definition: globals.c:100
#define RowExclusiveLock
Definition: lockdefs.h:38
#define DEFAULTTABLESPACE_OID
Definition: pg_tablespace.h:63
int errdetail(const char *fmt,...)
Definition: elog.c:873
int errcode_for_file_access(void)
Definition: elog.c:598
static void IdleInTransactionSessionTimeoutHandler(void)
Definition: postinit.c:1184
void before_shmem_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:320
Oid databaseId
Definition: proc.h:103
void pgstat_initialize(void)
Definition: pgstat.c:2642
static bool ThereIsAtLeastOneRole(void)
Definition: postinit.c:1195
void StartupXLOG(void)
Definition: xlog.c:5987
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:2967
#define ereport(elevel, rest)
Definition: elog.h:122
void InvalidateCatalogSnapshot(void)
Definition: snapmgr.c:506
char * GetDatabasePath(Oid dbNode, Oid spcNode)
Definition: relpath.c:108
void SetDatabasePath(const char *path)
Definition: miscinit.c:81
#define WARNING
Definition: elog.h:40
void ShutdownXLOG(int code, Datum arg)
Definition: xlog.c:8056
static HeapTuple GetDatabaseTupleByOid(Oid dboid)
Definition: postinit.c:137
#define InvalidBackendId
Definition: backendid.h:23
bool am_db_walsender
Definition: walsender.c:106
Oid MyDatabaseId
Definition: globals.c:76
int PostAuthDelay
Definition: postgres.c:97
void LockSharedObject(Oid classid, Oid objid, uint16 objsubid, LOCKMODE lockmode)
Definition: lmgr.c:871
void EnablePortalManager(void)
Definition: portalmem.c:103
static void ShutdownPostgres(int code, Datum arg)
Definition: postinit.c:1135
static char * username
Definition: initdb.c:129
size_t strlcpy(char *dst, const char *src, size_t siz)
Definition: strlcpy.c:45
TimeoutId RegisterTimeout(TimeoutId id, timeout_handler_proc handler)
Definition: timeout.c:373
bool IsAutoVacuumLauncherProcess(void)
Definition: autovacuum.c:2961
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:667
void InitializeSessionUserIdStandalone(void)
Definition: miscinit.c:577
void StartTransactionCommand(void)
Definition: xact.c:2673
#define XACT_READ_COMMITTED
Definition: xact.h:29
void InitializeSessionUserId(const char *rolename, Oid roleid)
Definition: miscinit.c:481
char * dbname
Definition: streamutil.c:42
static void process_startup_options(Port *port, bool am_superuser)
Definition: postinit.c:1036
int XactIsoLevel
Definition: xact.c:73
bool has_rolreplication(Oid roleid)
Definition: miscinit.c:463
void InitializeClientEncoding(void)
Definition: mbutils.c:293
void InitPlanCache(void)
Definition: plancache.c:114
void InitProcessPhase2(void)
Definition: proc.c:446
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:365
void RelationCacheInitialize(void)
Definition: relcache.c:3519
void ProcSignalInit(int pss_idx)
Definition: procsignal.c:104
void InitCatalogCache(void)
Definition: syscache.c:886
static void StatementTimeoutHandler(void)
Definition: postinit.c:1152
void SetCurrentStatementStartTimestamp(void)
Definition: xact.c:738
int errmsg(const char *fmt,...)
Definition: elog.c:797
void pgstat_bestart(void)
Definition: pgstat.c:2662
#define NameStr(name)
Definition: c.h:494
static void process_settings(Oid databaseid, Oid roleid)
Definition: postinit.c:1101
void CheckDeadLockAlert(void)
Definition: proc.c:1711
void InitBufferPoolBackend(void)
Definition: bufmgr.c:2444
#define elog
Definition: elog.h:219
#define HeapTupleGetOid(tuple)
Definition: htup_details.h:695
void InitPostmasterChild ( void  )

Definition at line 174 of file miscinit.c.

References elog, FATAL, InitializeLatchSupport(), InitLatch(), IsUnderPostmaster, LocalLatchData, MyLatch, MyProcPid, MyStartTime, NULL, and on_exit_reset().

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

175 {
176  IsUnderPostmaster = true; /* we are a postmaster subprocess now */
177 
178  MyProcPid = getpid(); /* reset MyProcPid */
179 
180  MyStartTime = time(NULL); /* set our start time in case we call elog */
181 
182  /*
183  * make sure stderr is in binary mode before anything can possibly be
184  * written to it, in case it's actually the syslogger pipe, so the pipe
185  * chunking protocol isn't disturbed. Non-logpipe data gets translated on
186  * redirection (e.g. via pg_ctl -l) anyway.
187  */
188 #ifdef WIN32
189  _setmode(fileno(stderr), _O_BINARY);
190 #endif
191 
192  /* We don't want the postmaster's proc_exit() handlers */
193  on_exit_reset();
194 
195  /* Initialize process-local latch support */
199 
200  /*
201  * If possible, make this process a group leader, so that the postmaster
202  * can signal any child processes too. Not all processes will have
203  * children, but for consistency we make all postmaster child processes do
204  * this.
205  */
206 #ifdef HAVE_SETSID
207  if (setsid() < 0)
208  elog(FATAL, "setsid() failed: %m");
209 #endif
210 }
int MyProcPid
Definition: globals.c:38
pg_time_t MyStartTime
Definition: globals.c:39
void on_exit_reset(void)
Definition: ipc.c:396
static Latch LocalLatchData
Definition: miscinit.c:60
#define FATAL
Definition: elog.h:52
bool IsUnderPostmaster
Definition: globals.c:100
void InitializeLatchSupport(void)
Definition: latch.c:157
#define NULL
Definition: c.h:226
void InitLatch(volatile Latch *latch)
Definition: latch.c:189
struct Latch * MyLatch
Definition: globals.c:51
#define elog
Definition: elog.h:219
void InitStandaloneProcess ( const char *  argv0)

Definition at line 218 of file miscinit.c.

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

Referenced by AuxiliaryProcessMain(), and PostgresMain().

219 {
221 
222  MyProcPid = getpid(); /* reset MyProcPid */
223 
224  MyStartTime = time(NULL); /* set our start time in case we call elog */
225 
226  /* Initialize process-local latch support */
230 
231  /* Compute paths, no postmaster to inherit from */
232  if (my_exec_path[0] == '\0')
233  {
234  if (find_my_exec(argv0, my_exec_path) < 0)
235  elog(FATAL, "%s: could not locate my own executable path",
236  argv0);
237  }
238 
239  if (pkglib_path[0] == '\0')
241 }
bool IsPostmasterEnvironment
Definition: globals.c:99
static char * argv0
Definition: pg_ctl.c:93
int MyProcPid
Definition: globals.c:38
pg_time_t MyStartTime
Definition: globals.c:39
void get_pkglib_path(const char *my_exec_path, char *ret_path)
Definition: path.c:758
static Latch LocalLatchData
Definition: miscinit.c:60
#define FATAL
Definition: elog.h:52
int find_my_exec(const char *argv0, char *retpath)
Definition: exec.c:119
char my_exec_path[MAXPGPATH]
Definition: globals.c:63
void InitializeLatchSupport(void)
Definition: latch.c:157
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:667
void InitLatch(volatile Latch *latch)
Definition: latch.c:189
struct Latch * MyLatch
Definition: globals.c:51
#define elog
Definition: elog.h:219
char pkglib_path[MAXPGPATH]
Definition: globals.c:64
bool InLocalUserIdChange ( void  )

Definition at line 405 of file miscinit.c.

References SECURITY_LOCAL_USERID_CHANGE, and SecurityRestrictionContext.

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

406 {
408 }
static int SecurityRestrictionContext
Definition: miscinit.c:163
#define SECURITY_LOCAL_USERID_CHANGE
Definition: miscadmin.h:291
bool InNoForceRLSOperation ( void  )

Definition at line 423 of file miscinit.c.

References SECURITY_NOFORCE_RLS, and SecurityRestrictionContext.

Referenced by check_enable_rls().

424 {
426 }
static int SecurityRestrictionContext
Definition: miscinit.c:163
#define SECURITY_NOFORCE_RLS
Definition: miscadmin.h:293
bool InSecurityRestrictedOperation ( void  )

Definition at line 414 of file miscinit.c.

References SECURITY_RESTRICTED_OPERATION, and SecurityRestrictionContext.

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

415 {
417 }
#define SECURITY_RESTRICTED_OPERATION
Definition: miscadmin.h:292
static int SecurityRestrictionContext
Definition: miscinit.c:163
void pg_bindtextdomain ( const char *  domain)

Definition at line 1488 of file miscinit.c.

References get_locale_path(), MAXPGPATH, and my_exec_path.

Referenced by _PG_init().

1489 {
1490 #ifdef ENABLE_NLS
1491  if (my_exec_path[0] != '\0')
1492  {
1493  char locale_path[MAXPGPATH];
1494 
1495  get_locale_path(my_exec_path, locale_path);
1496  bindtextdomain(domain, locale_path);
1497  pg_bind_textdomain_codeset(domain);
1498  }
1499 #endif
1500 }
#define MAXPGPATH
char my_exec_path[MAXPGPATH]
Definition: globals.c:63
void get_locale_path(const char *my_exec_path, char *ret_path)
Definition: path.c:767
void pg_split_opts ( char **  argv,
int *  argcp,
const char *  optstr 
)

Definition at line 436 of file postinit.c.

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

Referenced by BackendRun(), and process_startup_options().

437 {
438  StringInfoData s;
439 
440  initStringInfo(&s);
441 
442  while (*optstr)
443  {
444  bool last_was_escape = false;
445 
446  resetStringInfo(&s);
447 
448  /* skip over leading space */
449  while (isspace((unsigned char) *optstr))
450  optstr++;
451 
452  if (*optstr == '\0')
453  break;
454 
455  /*
456  * Parse a single option, stopping at the first space, unless it's
457  * escaped.
458  */
459  while (*optstr)
460  {
461  if (isspace((unsigned char) *optstr) && !last_was_escape)
462  break;
463 
464  if (!last_was_escape && *optstr == '\\')
465  last_was_escape = true;
466  else
467  {
468  last_was_escape = false;
469  appendStringInfoChar(&s, *optstr);
470  }
471 
472  optstr++;
473  }
474 
475  /* now store the option in the next argv[] position */
476  argv[(*argcp)++] = pstrdup(s.data);
477  }
478 
479  pfree(s.data);
480 }
char * pstrdup(const char *in)
Definition: mcxt.c:1165
void pfree(void *pointer)
Definition: mcxt.c:992
void resetStringInfo(StringInfo str)
Definition: stringinfo.c:94
void appendStringInfoChar(StringInfo str, char ch)
Definition: stringinfo.c:201
void initStringInfo(StringInfo str)
Definition: stringinfo.c:65
void PreventCommandDuringRecovery ( const char *  cmdname)

Definition at line 267 of file utility.c.

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

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

268 {
269  if (RecoveryInProgress())
270  ereport(ERROR,
271  (errcode(ERRCODE_READ_ONLY_SQL_TRANSACTION),
272  /* translator: %s is name of a SQL command, eg CREATE */
273  errmsg("cannot execute %s during recovery",
274  cmdname)));
275 }
int errcode(int sqlerrcode)
Definition: elog.c:575
bool RecoveryInProgress(void)
Definition: xlog.c:7643
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
int errmsg(const char *fmt,...)
Definition: elog.c:797
void PreventCommandIfParallelMode ( const char *  cmdname)

Definition at line 248 of file utility.c.

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

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

249 {
250  if (IsInParallelMode())
251  ereport(ERROR,
252  (errcode(ERRCODE_INVALID_TRANSACTION_STATE),
253  /* translator: %s is name of a SQL command, eg CREATE */
254  errmsg("cannot execute %s during a parallel operation",
255  cmdname)));
256 }
int errcode(int sqlerrcode)
Definition: elog.c:575
bool IsInParallelMode(void)
Definition: xact.c:911
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
int errmsg(const char *fmt,...)
Definition: elog.c:797
void PreventCommandIfReadOnly ( const char *  cmdname)

Definition at line 230 of file utility.c.

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

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

231 {
232  if (XactReadOnly)
233  ereport(ERROR,
234  (errcode(ERRCODE_READ_ONLY_SQL_TRANSACTION),
235  /* translator: %s is name of a SQL command, eg CREATE */
236  errmsg("cannot execute %s in a read-only transaction",
237  cmdname)));
238 }
int errcode(int sqlerrcode)
Definition: elog.c:575
#define ERROR
Definition: elog.h:43
#define ereport(elevel, rest)
Definition: elog.h:122
bool XactReadOnly
Definition: xact.c:76
int errmsg(const char *fmt,...)
Definition: elog.c:797
void process_session_preload_libraries ( void  )

Definition at line 1477 of file miscinit.c.

References load_libraries(), local_preload_libraries_string, and session_preload_libraries_string.

Referenced by PostgresMain().

1478 {
1480  "session_preload_libraries",
1481  false);
1483  "local_preload_libraries",
1484  true);
1485 }
static void load_libraries(const char *libraries, const char *gucname, bool restricted)
Definition: miscinit.c:1409
char * local_preload_libraries_string
Definition: miscinit.c:1397
char * session_preload_libraries_string
Definition: miscinit.c:1395
void process_shared_preload_libraries ( void  )

Definition at line 1464 of file miscinit.c.

References load_libraries(), process_shared_preload_libraries_in_progress, and shared_preload_libraries_string.

Referenced by PostmasterMain().

1465 {
1468  "shared_preload_libraries",
1469  false);
1471 }
bool process_shared_preload_libraries_in_progress
Definition: miscinit.c:1400
char * shared_preload_libraries_string
Definition: miscinit.c:1396
static void load_libraries(const char *libraries, const char *gucname, bool restricted)
Definition: miscinit.c:1409
void ProcessInterrupts ( void  )

Definition at line 2825 of file postgres.c.

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

Referenced by die().

2826 {
2827  /* OK to accept any interrupts now? */
2828  if (InterruptHoldoffCount != 0 || CritSectionCount != 0)
2829  return;
2830  InterruptPending = false;
2831 
2832  if (ProcDiePending)
2833  {
2834  ProcDiePending = false;
2835  QueryCancelPending = false; /* ProcDie trumps QueryCancel */
2836  LockErrorCleanup();
2837  /* As in quickdie, don't risk sending to client during auth */
2841  ereport(FATAL,
2842  (errcode(ERRCODE_QUERY_CANCELED),
2843  errmsg("canceling authentication due to timeout")));
2844  else if (IsAutoVacuumWorkerProcess())
2845  ereport(FATAL,
2846  (errcode(ERRCODE_ADMIN_SHUTDOWN),
2847  errmsg("terminating autovacuum process due to administrator command")));
2849  {
2851  ereport(FATAL,
2852  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
2853  errmsg("terminating connection due to conflict with recovery"),
2855  }
2856  else if (RecoveryConflictPending)
2857  {
2858  /* Currently there is only one non-retryable recovery conflict */
2861  ereport(FATAL,
2862  (errcode(ERRCODE_DATABASE_DROPPED),
2863  errmsg("terminating connection due to conflict with recovery"),
2865  }
2866  else
2867  ereport(FATAL,
2868  (errcode(ERRCODE_ADMIN_SHUTDOWN),
2869  errmsg("terminating connection due to administrator command")));
2870  }
2872  {
2873  QueryCancelPending = false; /* lost connection trumps QueryCancel */
2874  LockErrorCleanup();
2875  /* don't send to client, we already know the connection to be dead. */
2877  ereport(FATAL,
2878  (errcode(ERRCODE_CONNECTION_FAILURE),
2879  errmsg("connection to client lost")));
2880  }
2881 
2882  /*
2883  * If a recovery conflict happens while we are waiting for input from the
2884  * client, the client is presumably just sitting idle in a transaction,
2885  * preventing recovery from making progress. Terminate the connection to
2886  * dislodge it.
2887  */
2889  {
2890  QueryCancelPending = false; /* this trumps QueryCancel */
2891  RecoveryConflictPending = false;
2892  LockErrorCleanup();
2894  ereport(FATAL,
2895  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
2896  errmsg("terminating connection due to conflict with recovery"),
2898  errhint("In a moment you should be able to reconnect to the"
2899  " database and repeat your command.")));
2900  }
2901 
2902  if (QueryCancelPending)
2903  {
2904  bool lock_timeout_occurred;
2905  bool stmt_timeout_occurred;
2906 
2907  /*
2908  * Don't allow query cancel interrupts while reading input from the
2909  * client, because we might lose sync in the FE/BE protocol. (Die
2910  * interrupts are OK, because we won't read any further messages from
2911  * the client in that case.)
2912  */
2913  if (QueryCancelHoldoffCount != 0)
2914  {
2915  /*
2916  * Re-arm InterruptPending so that we process the cancel request
2917  * as soon as we're done reading the message.
2918  */
2919  InterruptPending = true;
2920  return;
2921  }
2922 
2923  QueryCancelPending = false;
2924 
2925  /*
2926  * If LOCK_TIMEOUT and STATEMENT_TIMEOUT indicators are both set, we
2927  * need to clear both, so always fetch both.
2928  */
2929  lock_timeout_occurred = get_timeout_indicator(LOCK_TIMEOUT, true);
2930  stmt_timeout_occurred = get_timeout_indicator(STATEMENT_TIMEOUT, true);
2931 
2932  /*
2933  * If both were set, we want to report whichever timeout completed
2934  * earlier; this ensures consistent behavior if the machine is slow
2935  * enough that the second timeout triggers before we get here. A tie
2936  * is arbitrarily broken in favor of reporting a lock timeout.
2937  */
2938  if (lock_timeout_occurred && stmt_timeout_occurred &&
2940  lock_timeout_occurred = false; /* report stmt timeout */
2941 
2942  if (lock_timeout_occurred)
2943  {
2944  LockErrorCleanup();
2945  ereport(ERROR,
2946  (errcode(ERRCODE_LOCK_NOT_AVAILABLE),
2947  errmsg("canceling statement due to lock timeout")));
2948  }
2949  if (stmt_timeout_occurred)
2950  {
2951  LockErrorCleanup();
2952  ereport(ERROR,
2953  (errcode(ERRCODE_QUERY_CANCELED),
2954  errmsg("canceling statement due to statement timeout")));
2955  }
2957  {
2958  LockErrorCleanup();
2959  ereport(ERROR,
2960  (errcode(ERRCODE_QUERY_CANCELED),
2961  errmsg("canceling autovacuum task")));
2962  }
2964  {
2965  RecoveryConflictPending = false;
2966  LockErrorCleanup();
2968  ereport(ERROR,
2969  (errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),
2970  errmsg("canceling statement due to conflict with recovery"),
2972  }
2973 
2974  /*
2975  * If we are reading a command from the client, just ignore the cancel
2976  * request --- sending an extra error message won't accomplish
2977  * anything. Otherwise, go ahead and throw the error.
2978  */
2979  if (!DoingCommandRead)
2980  {
2981  LockErrorCleanup();
2982  ereport(ERROR,
2983  (errcode(ERRCODE_QUERY_CANCELED),
2984  errmsg("canceling statement due to user request")));
2985  }
2986  }
2987 
2989  {
2990  /* Has the timeout setting changed since last we looked? */
2992  ereport(FATAL,
2993  (errcode(ERRCODE_IDLE_IN_TRANSACTION_SESSION_TIMEOUT),
2994  errmsg("terminating connection due to idle-in-transaction timeout")));
2995  else
2997 
2998  }
2999 
3002 }
volatile uint32 InterruptHoldoffCount
Definition: globals.c:34
TimestampTz get_timeout_finish_time(TimeoutId id)
Definition: timeout.c:667
int errhint(const char *fmt,...)
Definition: elog.c:987
void pgstat_report_recovery_conflict(int reason)
Definition: pgstat.c:1410
volatile bool IdleInTransactionSessionTimeoutPending
Definition: globals.c:33
volatile uint32 QueryCancelHoldoffCount
Definition: globals.c:35
int errcode(int sqlerrcode)
Definition: elog.c:575
volatile bool QueryCancelPending
Definition: globals.c:30
volatile bool ClientConnectionLost
Definition: globals.c:32
volatile bool ParallelMessagePending
Definition: parallel.c:99
bool ClientAuthInProgress
Definition: postmaster.c:346
#define ERROR
Definition: elog.h:43
int IdleInTransactionSessionTimeout
Definition: proc.c:63
#define FATAL
Definition: elog.h:52
void HandleParallelMessages(void)
Definition: parallel.c:705
Definition: dest.h:88
volatile uint32 CritSectionCount
Definition: globals.c:36
bool IsAutoVacuumWorkerProcess(void)
Definition: autovacuum.c:2967
#define ereport(elevel, rest)
Definition: elog.h:122
void LockErrorCleanup(void)
Definition: proc.c:675
static ProcSignalReason RecoveryConflictReason
Definition: postgres.c:166
static bool RecoveryConflictPending
Definition: postgres.c:164
static bool RecoveryConflictRetryable
Definition: postgres.c:165
bool get_timeout_indicator(TimeoutId id, bool reset_indicator)
Definition: timeout.c:633
static int errdetail_recovery_conflict(void)
Definition: postgres.c:2246
volatile bool InterruptPending
Definition: globals.c:29
#define Assert(condition)
Definition: c.h:667
static bool DoingCommandRead
Definition: postgres.c:142
volatile bool ProcDiePending
Definition: globals.c:31
int errmsg(const char *fmt,...)
Definition: elog.c:797
CommandDest whereToSendOutput
Definition: postgres.c:86
bool RecheckDataDirLockFile ( void  )

Definition at line 1262 of file miscinit.c.

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

Referenced by ServerLoop().

1263 {
1264  int fd;
1265  int len;
1266  long file_pid;
1267  char buffer[BLCKSZ];
1268 
1269  fd = open(DIRECTORY_LOCK_FILE, O_RDWR | PG_BINARY, 0);
1270  if (fd < 0)
1271  {
1272  /*
1273  * There are many foreseeable false-positive error conditions. For
1274  * safety, fail only on enumerated clearly-something-is-wrong
1275  * conditions.
1276  */
1277  switch (errno)
1278  {
1279  case ENOENT:
1280  case ENOTDIR:
1281  /* disaster */
1282  ereport(LOG,
1284  errmsg("could not open file \"%s\": %m",
1286  return false;
1287  default:
1288  /* non-fatal, at least for now */
1289  ereport(LOG,
1291  errmsg("could not open file \"%s\": %m; continuing anyway",
1293  return true;
1294  }
1295  }
1296  len = read(fd, buffer, sizeof(buffer) - 1);
1297  if (len < 0)
1298  {
1299  ereport(LOG,
1301  errmsg("could not read from file \"%s\": %m",
1303  close(fd);
1304  return true; /* treat read failure as nonfatal */
1305  }
1306  buffer[len] = '\0';
1307  close(fd);
1308  file_pid = atol(buffer);
1309  if (file_pid == getpid())
1310  return true; /* all is well */
1311 
1312  /* Trouble: someone's overwritten the lock file */
1313  ereport(LOG,
1314  (errmsg("lock file \"%s\" contains wrong PID: %ld instead of %ld",
1315  DIRECTORY_LOCK_FILE, file_pid, (long) getpid())));
1316  return false;
1317 }
#define DIRECTORY_LOCK_FILE
Definition: miscinit.c:53
#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:1034
int errcode_for_file_access(void)
Definition: elog.c:598
#define ereport(elevel, rest)
Definition: elog.h:122
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define close(a)
Definition: win32.h:17
#define read(a, b, c)
Definition: win32.h:18
void restore_stack_base ( pg_stack_base_t  base)

Definition at line 3080 of file postgres.c.

References stack_base_ptr.

3081 {
3082 #if defined(__ia64__) || defined(__ia64)
3083  stack_base_ptr = base.stack_base_ptr;
3084  register_stack_base_ptr = base.register_stack_base_ptr;
3085 #else
3086  stack_base_ptr = base;
3087 #endif
3088 }
char * stack_base_ptr
Definition: postgres.c:115
pg_stack_base_t set_stack_base ( void  )

Definition at line 3049 of file postgres.c.

References stack_base_ptr.

Referenced by PostmasterMain().

3050 {
3051  char stack_base;
3052  pg_stack_base_t old;
3053 
3054 #if defined(__ia64__) || defined(__ia64)
3055  old.stack_base_ptr = stack_base_ptr;
3056  old.register_stack_base_ptr = register_stack_base_ptr;
3057 #else
3058  old = stack_base_ptr;
3059 #endif
3060 
3061  /* Set up reference point for stack depth checking */
3062  stack_base_ptr = &stack_base;
3063 #if defined(__ia64__) || defined(__ia64)
3064  register_stack_base_ptr = ia64_get_bsp();
3065 #endif
3066 
3067  return old;
3068 }
char * stack_base_ptr
Definition: postgres.c:115
char * pg_stack_base_t
Definition: miscadmin.h:268
void SetCurrentRoleId ( Oid  roleid,
bool  is_superuser 
)

Definition at line 655 of file miscinit.c.

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

Referenced by assign_role().

656 {
657  /*
658  * Get correct info if it's SET ROLE NONE
659  *
660  * If SessionUserId hasn't been set yet, just do nothing --- the eventual
661  * SetSessionUserId call will fix everything. This is needed since we
662  * will get called during GUC initialization.
663  */
664  if (!OidIsValid(roleid))
665  {
667  return;
668 
669  roleid = SessionUserId;
671 
672  SetRoleIsActive = false;
673  }
674  else
675  SetRoleIsActive = true;
676 
677  SetOuterUserId(roleid);
678 
679  SetConfigOption("is_superuser",
680  is_superuser ? "on" : "off",
682 }
static Oid SessionUserId
Definition: miscinit.c:155
static void SetOuterUserId(Oid userid)
Definition: miscinit.c:301
#define OidIsValid(objectId)
Definition: c.h:530
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:6601
static bool SetRoleIsActive
Definition: miscinit.c:166
static bool SessionUserIsSuperuser
Definition: miscinit.c:161
bool is_superuser(void)
Definition: common.c:1986
void SetDatabasePath ( const char *  path)

Definition at line 81 of file miscinit.c.

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

Referenced by InitPostgres().

82 {
83  /* This should happen only once per process */
86 }
MemoryContext TopMemoryContext
Definition: mcxt.c:43
char * DatabasePath
Definition: globals.c:84
#define Assert(condition)
Definition: c.h:667
char * MemoryContextStrdup(MemoryContext context, const char *string)
Definition: mcxt.c:1152
void SetDataDir ( const char *  dir)

Definition at line 93 of file miscinit.c.

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

Referenced by SelectConfigFiles().

94 {
95  char *new;
96 
97  AssertArg(dir);
98 
99  /* If presented path is relative, convert to absolute */
100  new = make_absolute_path(dir);
101 
102  if (DataDir)
103  free(DataDir);
104  DataDir = new;
105 }
char * make_absolute_path(const char *path)
Definition: path.c:608
#define AssertArg(condition)
Definition: c.h:669
#define free(a)
Definition: header.h:60
char * DataDir
Definition: globals.c:59
void SetSessionAuthorization ( Oid  userid,
bool  is_superuser 
)

Definition at line 609 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().

610 {
611  /* Must have authenticated already, else can't make permission check */
613 
614  if (userid != AuthenticatedUserId &&
616  ereport(ERROR,
617  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
618  errmsg("permission denied to set session authorization")));
619 
621 
622  SetConfigOption("is_superuser",
623  is_superuser ? "on" : "off",
625 }
#define AssertState(condition)
Definition: c.h:670
int errcode(int sqlerrcode)
Definition: elog.c:575
#define OidIsValid(objectId)
Definition: c.h:530
#define ERROR
Definition: elog.h:43
void SetConfigOption(const char *name, const char *value, GucContext context, GucSource source)
Definition: guc.c:6601
static bool AuthenticatedUserIsSuperuser
Definition: miscinit.c:160
#define ereport(elevel, rest)
Definition: elog.h:122
bool is_superuser(void)
Definition: common.c:1986
int errmsg(const char *fmt,...)
Definition: elog.c:797
static void SetSessionUserId(Oid userid, bool is_superuser)
Definition: miscinit.c:324
static Oid AuthenticatedUserId
Definition: miscinit.c:154
void SetUserIdAndContext ( Oid  userid,
bool  sec_def_context 
)

Definition at line 443 of file miscinit.c.

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

444 {
445  /* We throw the same error SET ROLE would. */
447  ereport(ERROR,
448  (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
449  errmsg("cannot set parameter \"%s\" within security-restricted operation",
450  "role")));
451  CurrentUserId = userid;
452  if (sec_def_context)
454  else
456 }
int errcode(int sqlerrcode)
Definition: elog.c:575
#define ERROR
Definition: elog.h:43
static int SecurityRestrictionContext
Definition: miscinit.c:163
#define ereport(elevel, rest)
Definition: elog.h:122
#define SECURITY_LOCAL_USERID_CHANGE
Definition: miscadmin.h:291
static Oid CurrentUserId
Definition: miscinit.c:157
bool InSecurityRestrictedOperation(void)
Definition: miscinit.c:414
int errmsg(const char *fmt,...)
Definition: elog.c:797
void SetUserIdAndSecContext ( Oid  userid,
int  sec_context 
)
bool stack_is_too_deep ( void  )

Definition at line 3116 of file postgres.c.

References max_stack_depth_bytes, NULL, and stack_base_ptr.

Referenced by check_stack_depth(), and rstacktoodeep().

3117 {
3118  char stack_top_loc;
3119  long stack_depth;
3120 
3121  /*
3122  * Compute distance from reference point to my local variables
3123  */
3124  stack_depth = (long) (stack_base_ptr - &stack_top_loc);
3125 
3126  /*
3127  * Take abs value, since stacks grow up on some machines, down on others
3128  */
3129  if (stack_depth < 0)
3130  stack_depth = -stack_depth;
3131 
3132  /*
3133  * Trouble?
3134  *
3135  * The test on stack_base_ptr prevents us from erroring out if called
3136  * during process setup or in a non-backend process. Logically it should
3137  * be done first, but putting it here avoids wasting cycles during normal
3138  * cases.
3139  */
3140  if (stack_depth > max_stack_depth_bytes &&
3141  stack_base_ptr != NULL)
3142  return true;
3143 
3144  /*
3145  * On IA64 there is a separate "register" stack that requires its own
3146  * independent check. For this, we have to measure the change in the
3147  * "BSP" pointer from PostgresMain to here. Logic is just as above,
3148  * except that we know IA64's register stack grows up.
3149  *
3150  * Note we assume that the same max_stack_depth applies to both stacks.
3151  */
3152 #if defined(__ia64__) || defined(__ia64)
3153  stack_depth = (long) (ia64_get_bsp() - register_stack_base_ptr);
3154 
3155  if (stack_depth > max_stack_depth_bytes &&
3156  register_stack_base_ptr != NULL)
3157  return true;
3158 #endif /* IA64 */
3159 
3160  return false;
3161 }
static long max_stack_depth_bytes
Definition: postgres.c:107
#define NULL
Definition: c.h:226
char * stack_base_ptr
Definition: postgres.c:115
bool superuser ( void  )

Definition at line 47 of file superuser.c.

References GetUserId(), and superuser_arg().

Referenced by AddRoleMems(), AlterForeignDataWrapper(), AlterForeignDataWrapperOwner_internal(), AlterForeignServerOwner_internal(), AlterFunction(), AlterObjectNamespace_internal(), AlterObjectOwner_internal(), AlterObjectRename_internal(), AlterOpFamily(), AlterRole(), AlterRoleSet(), AlterSystemSetConfigFile(), AlterTypeOwner(), ATExecChangeOwner(), brin_metapage_info(), brin_page_items(), brin_page_type(), brin_revmap_data(), bt_metap(), bt_page_items(), bt_page_stats(), check_conn_params(), check_encoding_locale_matches(), check_permissions(), connect_pg_server(), CreateAccessMethod(), CreateCast(), CreateEventTrigger(), CreateForeignDataWrapper(), CreateFunction(), CreateProceduralLanguage(), CreateRole(), CreateTableSpace(), dblink_connstr_check(), dblink_security_check(), DefineAggregate(), DefineOpClass(), DefineOpFamily(), DefineTSParser(), DefineTSTemplate(), DefineType(), DelRoleMems(), DoCopy(), DropRole(), dummy_object_relabel(), EnableDisableTrigger(), ExecSetVariableStmt(), execute_extension_script(), ExecuteDoStmt(), file_fdw_validator(), fmgr_security_definer(), fsm_page_contents(), get_raw_page_internal(), GetConfigOption(), GetConfigOptionByName(), GetConfigOptionByNum(), GetConfigOptionResetString(), gin_leafpage_items(), gin_metapage_info(), gin_page_opaque_info(), GUCArrayReset(), have_createdb_privilege(), heap_page_items(), InitPostgres(), lo_export(), lo_import_internal(), main(), page_header(), pg_logdir_ls(), pg_ls_dir(), pg_read_binary_file(), pg_read_file(), pg_relpages(), pg_relpagesbyid(), pg_signal_backend(), pg_stat_file(), pg_stat_get_wal_receiver(), pg_stat_get_wal_senders(), pg_stat_statements_internal(), pgstat_get_backend_current_activity(), pgstatginindex(), pgstatindex(), pgstatindexbyid(), pgstattuple(), pgstattuple_approx(), pgstattuplebyid(), ProcedureCreate(), regress_putenv(), RemoveAccessMethodById(), RenameRole(), replorigin_check_prerequisites(), requireSuperuser(), sepgsql_restorecon(), set_config_by_name(), SetPGVariable(), ShowAllGUCConfig(), standard_ProcessUtility(), tuple_data_split(), validate_option_array_item(), and wait_pid().

48 {
49  return superuser_arg(GetUserId());
50 }
Oid GetUserId(void)
Definition: miscinit.c:282
bool superuser_arg(Oid roleid)
Definition: superuser.c:57
bool superuser_arg ( Oid  roleid)

Definition at line 57 of file superuser.c.

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

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

58 {
59  bool result;
60  HeapTuple rtup;
61 
62  /* Quick out for cache hit */
63  if (OidIsValid(last_roleid) && last_roleid == roleid)
64  return last_roleid_is_super;
65 
66  /* Special escape path in case you deleted all your users. */
67  if (!IsUnderPostmaster && roleid == BOOTSTRAP_SUPERUSERID)
68  return true;
69 
70  /* OK, look up the information in pg_authid */
71  rtup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
72  if (HeapTupleIsValid(rtup))
73  {
74  result = ((Form_pg_authid) GETSTRUCT(rtup))->rolsuper;
75  ReleaseSysCache(rtup);
76  }
77  else
78  {
79  /* Report "not superuser" for invalid roleids */
80  result = false;
81  }
82 
83  /* If first time through, set up callback for cache flushes */
85  {
88  (Datum) 0);
90  }
91 
92  /* Cache the result for next time */
93  last_roleid = roleid;
94  last_roleid_is_super = result;
95 
96  return result;
97 }
static Oid last_roleid
Definition: superuser.c:36
#define GETSTRUCT(TUP)
Definition: htup_details.h:656
#define OidIsValid(objectId)
Definition: c.h:530
#define SearchSysCache1(cacheId, key1)
Definition: syscache.h:142
static void RoleidCallback(Datum arg, int cacheid, uint32 hashvalue)
Definition: superuser.c:104
FormData_pg_authid * Form_pg_authid
Definition: pg_authid.h:72
static bool last_roleid_is_super
Definition: superuser.c:37
#define ObjectIdGetDatum(X)
Definition: postgres.h:515
bool IsUnderPostmaster
Definition: globals.c:100
void CacheRegisterSyscacheCallback(int cacheid, SyscacheCallbackFunction func, Datum arg)
Definition: inval.c:1354
uintptr_t Datum
Definition: postgres.h:374
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1002
#define HeapTupleIsValid(tuple)
Definition: htup.h:77
#define BOOTSTRAP_SUPERUSERID
Definition: pg_authid.h:104
static bool roleid_callback_registered
Definition: superuser.c:38
void SwitchBackToLocalLatch ( void  )

Definition at line 263 of file miscinit.c.

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

Referenced by AuxiliaryProcKill(), and ProcKill().

264 {
267 
269 
270  if (FeBeWaitSet)
272 
273  SetLatch(MyLatch);
274 }
PGPROC * MyProc
Definition: proc.c:67
void ModifyWaitEvent(WaitEventSet *set, int pos, uint32 events, Latch *latch)
Definition: latch.c:683
WaitEventSet * FeBeWaitSet
Definition: pqcomm.c:167
Latch procLatch
Definition: proc.h:93
static Latch LocalLatchData
Definition: miscinit.c:60
void SetLatch(volatile Latch *latch)
Definition: latch.c:380
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:667
struct Latch * MyLatch
Definition: globals.c:51
#define WL_LATCH_SET
Definition: latch.h:124
void SwitchToSharedLatch ( void  )

Definition at line 244 of file miscinit.c.

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

Referenced by InitAuxiliaryProcess(), and InitProcess().

245 {
247  Assert(MyProc != NULL);
248 
250 
251  if (FeBeWaitSet)
253 
254  /*
255  * Set the shared latch as the local one might have been set. This
256  * shouldn't normally be necessary as code is supposed to check the
257  * condition before waiting for the latch, but a bit care can't hurt.
258  */
259  SetLatch(MyLatch);
260 }
PGPROC * MyProc
Definition: proc.c:67
void ModifyWaitEvent(WaitEventSet *set, int pos, uint32 events, Latch *latch)
Definition: latch.c:683
WaitEventSet * FeBeWaitSet
Definition: pqcomm.c:167
Latch procLatch
Definition: proc.h:93
static Latch LocalLatchData
Definition: miscinit.c:60
void SetLatch(volatile Latch *latch)
Definition: latch.c:380
#define NULL
Definition: c.h:226
#define Assert(condition)
Definition: c.h:667
struct Latch * MyLatch
Definition: globals.c:51
#define WL_LATCH_SET
Definition: latch.h:124
void TouchSocketLockFiles ( void  )

Definition at line 1099 of file miscinit.c.

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

Referenced by ServerLoop().

1100 {
1101  ListCell *l;
1102 
1103  foreach(l, lock_files)
1104  {
1105  char *socketLockFile = (char *) lfirst(l);
1106 
1107  /* No need to touch the data directory lock file, we trust */
1108  if (strcmp(socketLockFile, DIRECTORY_LOCK_FILE) == 0)
1109  continue;
1110 
1111  /*
1112  * utime() is POSIX standard, utimes() is a common alternative; if we
1113  * have neither, fall back to actually reading the file (which only
1114  * sets the access time not mod time, but that should be enough in
1115  * most cases). In all paths, we ignore errors.
1116  */
1117 #ifdef HAVE_UTIME
1118  utime(socketLockFile, NULL);
1119 #else /* !HAVE_UTIME */
1120 #ifdef HAVE_UTIMES
1121  utimes(socketLockFile, NULL);
1122 #else /* !HAVE_UTIMES */
1123  int fd;
1124  char buffer[1];
1125 
1126  fd = open(socketLockFile, O_RDONLY | PG_BINARY, 0);
1127  if (fd >= 0)
1128  {
1129  read(fd, buffer, sizeof(buffer));
1130  close(fd);
1131  }
1132 #endif /* HAVE_UTIMES */
1133 #endif /* HAVE_UTIME */
1134  }
1135 }
static List * lock_files
Definition: miscinit.c:58
#define DIRECTORY_LOCK_FILE
Definition: miscinit.c:53
static int fd(const char *x, int i)
Definition: preproc-init.c:105
#define PG_BINARY
Definition: c.h:1034
#define NULL
Definition: c.h:226
#define lfirst(lc)
Definition: pg_list.h:106
#define close(a)
Definition: win32.h:17
#define read(a, b, c)
Definition: win32.h:18
int trace_recovery ( int  trace_level)
void ValidatePgVersion ( const char *  path)

Definition at line 1332 of file miscinit.c.

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

Referenced by AuxiliaryProcessMain(), checkDataDir(), InitPostgres(), and PostgresMain().

1333 {
1334  char full_path[MAXPGPATH];
1335  FILE *file;
1336  int ret;
1337  long file_major;
1338  long my_major;
1339  char *endptr;
1340  char file_version_string[64];
1341  const char *my_version_string = PG_VERSION;
1342 
1343  my_major = strtol(my_version_string, &endptr, 10);
1344 
1345  snprintf(full_path, sizeof(full_path), "%s/PG_VERSION", path);
1346 
1347  file = AllocateFile(full_path, "r");
1348  if (!file)
1349  {
1350  if (errno == ENOENT)
1351  ereport(FATAL,
1352  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1353  errmsg("\"%s\" is not a valid data directory",
1354  path),
1355  errdetail("File \"%s\" is missing.", full_path)));
1356  else
1357  ereport(FATAL,
1359  errmsg("could not open file \"%s\": %m", full_path)));
1360  }
1361 
1362  file_version_string[0] = '\0';
1363  ret = fscanf(file, "%63s", file_version_string);
1364  file_major = strtol(file_version_string, &endptr, 10);
1365 
1366  if (ret != 1 || endptr == file_version_string)
1367  ereport(FATAL,
1368  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1369  errmsg("\"%s\" is not a valid data directory",
1370  path),
1371  errdetail("File \"%s\" does not contain valid data.",
1372  full_path),
1373  errhint("You might need to initdb.")));
1374 
1375  FreeFile(file);
1376 
1377  if (my_major != file_major)
1378  ereport(FATAL,
1379  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1380  errmsg("database files are incompatible with server"),
1381  errdetail("The data directory was initialized by PostgreSQL version %s, "
1382  "which is not compatible with this version %s.",
1383  file_version_string, my_version_string)));
1384 }
int errhint(const char *fmt,...)
Definition: elog.c:987
int errcode(int sqlerrcode)
Definition: elog.c:575
int snprintf(char *str, size_t count, const char *fmt,...) pg_attribute_printf(3
#define FATAL
Definition: elog.h:52
#define MAXPGPATH
int errdetail(const char *fmt,...)
Definition: elog.c:873
int errcode_for_file_access(void)
Definition: elog.c:598
FILE * AllocateFile(const char *name, const char *mode)
Definition: fd.c:1966
#define ereport(elevel, rest)
Definition: elog.h:122
int FreeFile(FILE *file)
Definition: fd.c:2149
int errmsg(const char *fmt,...)
Definition: elog.c:797

Variable Documentation

volatile bool ClientConnectionLost

Definition at line 32 of file globals.c.

Referenced by internal_flush(), and ProcessInterrupts().

PGDLLIMPORT int DateOrder
bool ExitOnAnyError

Definition at line 104 of file globals.c.

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

PGDLLIMPORT volatile bool IdleInTransactionSessionTimeoutPending

Definition at line 33 of file globals.c.

Referenced by IdleInTransactionSessionTimeoutHandler(), and ProcessInterrupts().

bool IgnoreSystemIndexes
PGDLLIMPORT volatile uint32 InterruptHoldoffCount

Definition at line 34 of file globals.c.

Referenced by errfinish(), proc_exit_prepare(), and ProcessInterrupts().

PGDLLIMPORT int IntervalStyle
PGDLLIMPORT bool IsBackgroundWorker
PGDLLIMPORT bool IsUnderPostmaster

Definition at line 100 of file globals.c.

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

char* local_preload_libraries_string

Definition at line 1397 of file miscinit.c.

Referenced by process_session_preload_libraries().

int max_parallel_workers

Definition at line 125 of file globals.c.

Referenced by RegisterDynamicBackgroundWorker().

Definition at line 55 of file miscinit.c.

AuxProcType MyAuxProcType

Definition at line 67 of file bootstrap.c.

Referenced by AuxiliaryProcessMain().

PGDLLIMPORT Oid MyDatabaseId

Definition at line 76 of file globals.c.

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

PGDLLIMPORT int NBuffers

Definition at line 122 of file globals.c.

char OutputFileName[]

Definition at line 61 of file globals.c.

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

char pkglib_path[]

Definition at line 64 of file globals.c.

Referenced by getInstallationPaths(), InitStandaloneProcess(), and substitute_libpath_macro().

PGDLLIMPORT bool process_shared_preload_libraries_in_progress
PGDLLIMPORT volatile uint32 QueryCancelHoldoffCount

Definition at line 35 of file globals.c.

Referenced by errfinish(), and ProcessInterrupts().

PGDLLIMPORT int replacement_sort_tuples

Definition at line 114 of file globals.c.

Referenced by useselection().

char* session_preload_libraries_string

Definition at line 1395 of file miscinit.c.

Referenced by process_session_preload_libraries().

char* shared_preload_libraries_string

Definition at line 1396 of file miscinit.c.

Referenced by process_shared_preload_libraries().

int trace_recovery_messages

Definition at line 450 of file guc.c.

Referenced by StartupXLOG(), and trace_recovery().

bool VacuumCostActive
int VacuumCostBalance
int VacuumCostLimit
int VacuumCostPageDirty

Definition at line 130 of file globals.c.

Referenced by MarkBufferDirty(), and MarkBufferDirtyHint().

int VacuumCostPageHit

Definition at line 128 of file globals.c.

Referenced by ReadBuffer_common().

int VacuumCostPageMiss

Definition at line 129 of file globals.c.

Referenced by ReadBuffer_common().

int VacuumPageDirty

Definition at line 136 of file globals.c.

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

int VacuumPageHit

Definition at line 134 of file globals.c.

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

int VacuumPageMiss

Definition at line 135 of file globals.c.

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

PGDLLIMPORT int work_mem

Definition at line 112 of file globals.c.

Referenced by _bt_spoolinit(), begin_partition(), brin_page_items(), BuildTupleHashTable(), choose_hashed_setop(), collectMatchBitmap(), connectby(), cost_material(), cost_rescan(), create_distinct_paths(), create_grouping_paths(), create_groupingsets_path(), create_merge_append_path(), create_sort_path(), create_unique_path(), crosstab(), dblink_get_notify(), deflist_to_tuplestore(), each_worker(), each_worker_jsonb(), elements_worker(), elements_worker_jsonb(), exec_init_tuple_store(), ExecChooseHashTableSize(), ExecHashTableCreate(), ExecInitCteScan(), ExecInitRecursiveUnion(), ExecMakeTableFunctionResult(), ExecMaterial(), ExecRecursiveUnion(), ExecSort(), final_cost_mergejoin(), fmgr_sql(), get_crosstab_tuplestore(), GetTriggerTransitionTuplestore(), ginInsertCleanup(), initial_cost_mergejoin(), initialize_aggregate(), initialize_phase(), label_sort_with_costsize(), materializeQueryResult(), materializeResult(), MultiExecBitmapIndexScan(), MultiExecBitmapOr(), ordered_set_startup(), pg_available_extension_versions(), pg_available_extensions(), pg_config(), pg_cursor(), pg_event_trigger_ddl_commands(), pg_event_trigger_dropped_objects(), pg_extension_update_paths(), pg_get_replication_slots(), pg_logical_slot_get_changes_guts(), pg_prepared_statement(), pg_show_replication_origin_status(), pg_stat_get_activity(), pg_stat_get_progress_info(), pg_stat_get_wal_senders(), pg_stat_statements_internal(), pg_stop_backup_v2(), plperl_return_next(), pltcl_init_tuple_store(), populate_recordset_worker(), PortalCreateHoldStore(), show_all_file_settings(), storeRow(), subplan_is_hashable(), and xpath_table().