Header And Logo
|
#include "postgres.h"#include <unistd.h>#include <time.h>#include <sys/stat.h>#include <fcntl.h>#include "access/xlog.h"#include "access/xlog_internal.h"#include "catalog/pg_control.h"
Go to the source code of this file.
Defines | |
| #define | FRONTEND 1 |
Functions | |
| static void | usage (const char *progname) |
| static const char * | dbState (DBState state) |
| static const char * | wal_level_str (WalLevel wal_level) |
| int | main (int argc, char *argv[]) |
| #define FRONTEND 1 |
Definition at line 17 of file pg_controldata.c.
| static const char* dbState | ( | DBState | state | ) | [static] |
Definition at line 47 of file pg_controldata.c.
References _, DB_IN_ARCHIVE_RECOVERY, DB_IN_CRASH_RECOVERY, DB_IN_PRODUCTION, DB_SHUTDOWNED, DB_SHUTDOWNED_IN_RECOVERY, DB_SHUTDOWNING, and DB_STARTUP.
Referenced by main().
{
switch (state)
{
case DB_STARTUP:
return _("starting up");
case DB_SHUTDOWNED:
return _("shut down");
case DB_SHUTDOWNED_IN_RECOVERY:
return _("shut down in recovery");
case DB_SHUTDOWNING:
return _("shutting down");
case DB_IN_CRASH_RECOVERY:
return _("in crash recovery");
case DB_IN_ARCHIVE_RECOVERY:
return _("in archive recovery");
case DB_IN_PRODUCTION:
return _("in production");
}
return _("unrecognized status code");
}
| int main | ( | int | argc, | |
| char * | argv[] | |||
| ) |
Definition at line 86 of file pg_controldata.c.
References _, close, COMP_CRC32, ControlFile, DataDir, dbState(), EQ_CRC32, FIN_CRC32, get_progname(), INIT_CRC32, MAXPGPATH, NULL, offsetof, PG_BINARY, PG_TEXTDOMAIN, progname, read, set_pglocale_pgservice(), snprintf(), strerror(), usage(), wal_level_str(), XLByteToSeg, and XLogFileName.
{
ControlFileData ControlFile;
int fd;
char ControlFilePath[MAXPGPATH];
char *DataDir;
pg_crc32 crc;
time_t time_tmp;
char pgctime_str[128];
char ckpttime_str[128];
char sysident_str[32];
const char *strftime_fmt = "%c";
const char *progname;
XLogSegNo segno;
char xlogfilename[MAXFNAMELEN];
set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_controldata"));
progname = get_progname(argv[0]);
if (argc > 1)
{
if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
{
usage(progname);
exit(0);
}
if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
{
puts("pg_controldata (PostgreSQL) " PG_VERSION);
exit(0);
}
}
if (argc > 1)
DataDir = argv[1];
else
DataDir = getenv("PGDATA");
if (DataDir == NULL)
{
fprintf(stderr, _("%s: no data directory specified\n"), progname);
fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
exit(1);
}
snprintf(ControlFilePath, MAXPGPATH, "%s/global/pg_control", DataDir);
if ((fd = open(ControlFilePath, O_RDONLY | PG_BINARY, 0)) == -1)
{
fprintf(stderr, _("%s: could not open file \"%s\" for reading: %s\n"),
progname, ControlFilePath, strerror(errno));
exit(2);
}
if (read(fd, &ControlFile, sizeof(ControlFileData)) != sizeof(ControlFileData))
{
fprintf(stderr, _("%s: could not read file \"%s\": %s\n"),
progname, ControlFilePath, strerror(errno));
exit(2);
}
close(fd);
/* Check the CRC. */
INIT_CRC32(crc);
COMP_CRC32(crc,
(char *) &ControlFile,
offsetof(ControlFileData, crc));
FIN_CRC32(crc);
if (!EQ_CRC32(crc, ControlFile.crc))
printf(_("WARNING: Calculated CRC checksum does not match value stored in file.\n"
"Either the file is corrupt, or it has a different layout than this program\n"
"is expecting. The results below are untrustworthy.\n\n"));
/*
* This slightly-chintzy coding will work as long as the control file
* timestamps are within the range of time_t; that should be the case in
* all foreseeable circumstances, so we don't bother importing the
* backend's timezone library into pg_controldata.
*
* Use variable for format to suppress overly-anal-retentive gcc warning
* about %c
*/
time_tmp = (time_t) ControlFile.time;
strftime(pgctime_str, sizeof(pgctime_str), strftime_fmt,
localtime(&time_tmp));
time_tmp = (time_t) ControlFile.checkPointCopy.time;
strftime(ckpttime_str, sizeof(ckpttime_str), strftime_fmt,
localtime(&time_tmp));
/*
* Calculate name of the WAL file containing the latest checkpoint's REDO
* start point.
*/
XLByteToSeg(ControlFile.checkPointCopy.redo, segno);
XLogFileName(xlogfilename, ControlFile.checkPointCopy.ThisTimeLineID, segno);
/*
* Format system_identifier separately to keep platform-dependent format
* code out of the translatable message string.
*/
snprintf(sysident_str, sizeof(sysident_str), UINT64_FORMAT,
ControlFile.system_identifier);
printf(_("pg_control version number: %u\n"),
ControlFile.pg_control_version);
if (ControlFile.pg_control_version % 65536 == 0 && ControlFile.pg_control_version / 65536 != 0)
printf(_("WARNING: possible byte ordering mismatch\n"
"The byte ordering used to store the pg_control file might not match the one\n"
"used by this program. In that case the results below would be incorrect, and\n"
"the PostgreSQL installation would be incompatible with this data directory.\n"));
printf(_("Catalog version number: %u\n"),
ControlFile.catalog_version_no);
printf(_("Database system identifier: %s\n"),
sysident_str);
printf(_("Database cluster state: %s\n"),
dbState(ControlFile.state));
printf(_("pg_control last modified: %s\n"),
pgctime_str);
printf(_("Latest checkpoint location: %X/%X\n"),
(uint32) (ControlFile.checkPoint >> 32),
(uint32) ControlFile.checkPoint);
printf(_("Prior checkpoint location: %X/%X\n"),
(uint32) (ControlFile.prevCheckPoint >> 32),
(uint32) ControlFile.prevCheckPoint);
printf(_("Latest checkpoint's REDO location: %X/%X\n"),
(uint32) (ControlFile.checkPointCopy.redo >> 32),
(uint32) ControlFile.checkPointCopy.redo);
printf(_("Latest checkpoint's REDO WAL file: %s\n"),
xlogfilename);
printf(_("Latest checkpoint's TimeLineID: %u\n"),
ControlFile.checkPointCopy.ThisTimeLineID);
printf(_("Latest checkpoint's PrevTimeLineID: %u\n"),
ControlFile.checkPointCopy.PrevTimeLineID);
printf(_("Latest checkpoint's full_page_writes: %s\n"),
ControlFile.checkPointCopy.fullPageWrites ? _("on") : _("off"));
printf(_("Latest checkpoint's NextXID: %u/%u\n"),
ControlFile.checkPointCopy.nextXidEpoch,
ControlFile.checkPointCopy.nextXid);
printf(_("Latest checkpoint's NextOID: %u\n"),
ControlFile.checkPointCopy.nextOid);
printf(_("Latest checkpoint's NextMultiXactId: %u\n"),
ControlFile.checkPointCopy.nextMulti);
printf(_("Latest checkpoint's NextMultiOffset: %u\n"),
ControlFile.checkPointCopy.nextMultiOffset);
printf(_("Latest checkpoint's oldestXID: %u\n"),
ControlFile.checkPointCopy.oldestXid);
printf(_("Latest checkpoint's oldestXID's DB: %u\n"),
ControlFile.checkPointCopy.oldestXidDB);
printf(_("Latest checkpoint's oldestActiveXID: %u\n"),
ControlFile.checkPointCopy.oldestActiveXid);
printf(_("Latest checkpoint's oldestMultiXid: %u\n"),
ControlFile.checkPointCopy.oldestMulti);
printf(_("Latest checkpoint's oldestMulti's DB: %u\n"),
ControlFile.checkPointCopy.oldestMultiDB);
printf(_("Time of latest checkpoint: %s\n"),
ckpttime_str);
printf(_("Fake LSN counter for unlogged rels: %X/%X\n"),
(uint32) (ControlFile.unloggedLSN >> 32),
(uint32) ControlFile.unloggedLSN);
printf(_("Minimum recovery ending location: %X/%X\n"),
(uint32) (ControlFile.minRecoveryPoint >> 32),
(uint32) ControlFile.minRecoveryPoint);
printf(_("Min recovery ending loc's timeline: %u\n"),
ControlFile.minRecoveryPointTLI);
printf(_("Backup start location: %X/%X\n"),
(uint32) (ControlFile.backupStartPoint >> 32),
(uint32) ControlFile.backupStartPoint);
printf(_("Backup end location: %X/%X\n"),
(uint32) (ControlFile.backupEndPoint >> 32),
(uint32) ControlFile.backupEndPoint);
printf(_("End-of-backup record required: %s\n"),
ControlFile.backupEndRequired ? _("yes") : _("no"));
printf(_("Current wal_level setting: %s\n"),
wal_level_str(ControlFile.wal_level));
printf(_("Current max_connections setting: %d\n"),
ControlFile.MaxConnections);
printf(_("Current max_prepared_xacts setting: %d\n"),
ControlFile.max_prepared_xacts);
printf(_("Current max_locks_per_xact setting: %d\n"),
ControlFile.max_locks_per_xact);
printf(_("Maximum data alignment: %u\n"),
ControlFile.maxAlign);
/* we don't print floatFormat since can't say much useful about it */
printf(_("Database block size: %u\n"),
ControlFile.blcksz);
printf(_("Blocks per segment of large relation: %u\n"),
ControlFile.relseg_size);
printf(_("WAL block size: %u\n"),
ControlFile.xlog_blcksz);
printf(_("Bytes per WAL segment: %u\n"),
ControlFile.xlog_seg_size);
printf(_("Maximum length of identifiers: %u\n"),
ControlFile.nameDataLen);
printf(_("Maximum columns in an index: %u\n"),
ControlFile.indexMaxKeys);
printf(_("Maximum size of a TOAST chunk: %u\n"),
ControlFile.toast_max_chunk_size);
printf(_("Date/time type storage: %s\n"),
(ControlFile.enableIntTimes ? _("64-bit integers") : _("floating-point numbers")));
printf(_("Float4 argument passing: %s\n"),
(ControlFile.float4ByVal ? _("by value") : _("by reference")));
printf(_("Float8 argument passing: %s\n"),
(ControlFile.float8ByVal ? _("by value") : _("by reference")));
printf(_("Data page checksum version: %u\n"),
ControlFile.data_checksum_version);
return 0;
}
| static void usage | ( | const char * | progname | ) | [static] |
Definition at line 32 of file pg_controldata.c.
References _.
{
printf(_("%s displays control information of a PostgreSQL database cluster.\n\n"), progname);
printf(_("Usage:\n"));
printf(_(" %s [OPTION] [DATADIR]\n"), progname);
printf(_("\nOptions:\n"));
printf(_(" -V, --version output version information, then exit\n"));
printf(_(" -?, --help show this help, then exit\n"));
printf(_("\nIf no data directory (DATADIR) is specified, "
"the environment variable PGDATA\nis used.\n\n"));
printf(_("Report bugs to <[email protected]>.\n"));
}
| static const char* wal_level_str | ( | WalLevel | wal_level | ) | [static] |
Definition at line 70 of file pg_controldata.c.
References _, WAL_LEVEL_ARCHIVE, WAL_LEVEL_HOT_STANDBY, and WAL_LEVEL_MINIMAL.
Referenced by main().
{
switch (wal_level)
{
case WAL_LEVEL_MINIMAL:
return "minimal";
case WAL_LEVEL_ARCHIVE:
return "archive";
case WAL_LEVEL_HOT_STANDBY:
return "hot_standby";
}
return _("unrecognized wal_level");
}
1.7.1