mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-12-27 08:39:28 +08:00
139 lines
3.7 KiB
C
139 lines
3.7 KiB
C
/*
|
|
* pg_controldata
|
|
*
|
|
* reads the data from $PGDATA/global/pg_control
|
|
*
|
|
* copyright (c) Oliver Elphick <olly@lfix.co.uk>, 2001;
|
|
* licence: BSD
|
|
*
|
|
* $Header: /cvsroot/pgsql/contrib/pg_controldata/Attic/pg_controldata.c,v 1.5 2001/10/25 05:49:19 momjian Exp $
|
|
*/
|
|
#include "postgres.h"
|
|
|
|
#include <unistd.h>
|
|
#include <time.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
|
|
#include "catalog/pg_control.h"
|
|
|
|
|
|
static const char *
|
|
dbState(DBState state)
|
|
{
|
|
switch (state)
|
|
{
|
|
case DB_STARTUP:
|
|
return "STARTUP";
|
|
case DB_SHUTDOWNED:
|
|
return "SHUTDOWNED";
|
|
case DB_SHUTDOWNING:
|
|
return "SHUTDOWNING";
|
|
case DB_IN_RECOVERY:
|
|
return "IN_RECOVERY";
|
|
case DB_IN_PRODUCTION:
|
|
return "IN_PRODUCTION";
|
|
}
|
|
return "unrecognized status code";
|
|
}
|
|
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
ControlFileData ControlFile;
|
|
int fd;
|
|
char ControlFilePath[MAXPGPATH];
|
|
char *DataDir;
|
|
crc64 crc;
|
|
char pgctime_str[32];
|
|
char ckpttime_str[32];
|
|
|
|
if (argc > 1)
|
|
DataDir = argv[1];
|
|
else
|
|
DataDir = getenv("PGDATA");
|
|
if (DataDir == NULL)
|
|
{
|
|
fprintf(stderr, "no data directory specified\n");
|
|
exit(1);
|
|
}
|
|
|
|
snprintf(ControlFilePath, MAXPGPATH, "%s/global/pg_control", DataDir);
|
|
|
|
if ((fd = open(ControlFilePath, O_RDONLY)) == -1)
|
|
{
|
|
perror("Failed to open $PGDATA/global/pg_control for reading");
|
|
exit(2);
|
|
}
|
|
|
|
if (read(fd, &ControlFile, sizeof(ControlFileData)) != sizeof(ControlFileData))
|
|
{
|
|
perror("Failed to read $PGDATA/global/pg_control");
|
|
exit(2);
|
|
}
|
|
close(fd);
|
|
|
|
/* Check the CRC. */
|
|
INIT_CRC64(crc);
|
|
COMP_CRC64(crc,
|
|
(char *) &ControlFile + sizeof(crc64),
|
|
sizeof(ControlFileData) - sizeof(crc64));
|
|
FIN_CRC64(crc);
|
|
|
|
if (!EQ_CRC64(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");
|
|
|
|
strftime(pgctime_str, 32, "%c",
|
|
localtime(&(ControlFile.time)));
|
|
strftime(ckpttime_str, 32, "%c",
|
|
localtime(&(ControlFile.checkPointCopy.time)));
|
|
|
|
printf("pg_control version number: %u\n"
|
|
"Catalog version number: %u\n"
|
|
"Database state: %s\n"
|
|
"pg_control last modified: %s\n"
|
|
"Current log file id: %u\n"
|
|
"Next log file segment: %u\n"
|
|
"Latest checkpoint location: %X/%X\n"
|
|
"Prior checkpoint location: %X/%X\n"
|
|
"Latest checkpoint's REDO location: %X/%X\n"
|
|
"Latest checkpoint's UNDO location: %X/%X\n"
|
|
"Latest checkpoint's StartUpID: %u\n"
|
|
"Latest checkpoint's NextXID: %u\n"
|
|
"Latest checkpoint's NextOID: %u\n"
|
|
"Time of latest checkpoint: %s\n"
|
|
"Database block size: %u\n"
|
|
"Blocks per segment of large relation: %u\n"
|
|
"LC_COLLATE: %s\n"
|
|
"LC_CTYPE: %s\n",
|
|
|
|
ControlFile.pg_control_version,
|
|
ControlFile.catalog_version_no,
|
|
dbState(ControlFile.state),
|
|
pgctime_str,
|
|
ControlFile.logId,
|
|
ControlFile.logSeg,
|
|
ControlFile.checkPoint.xlogid,
|
|
ControlFile.checkPoint.xrecoff,
|
|
ControlFile.prevCheckPoint.xlogid,
|
|
ControlFile.prevCheckPoint.xrecoff,
|
|
ControlFile.checkPointCopy.redo.xlogid,
|
|
ControlFile.checkPointCopy.redo.xrecoff,
|
|
ControlFile.checkPointCopy.undo.xlogid,
|
|
ControlFile.checkPointCopy.undo.xrecoff,
|
|
ControlFile.checkPointCopy.ThisStartUpID,
|
|
ControlFile.checkPointCopy.nextXid,
|
|
ControlFile.checkPointCopy.nextOid,
|
|
ckpttime_str,
|
|
ControlFile.blcksz,
|
|
ControlFile.relseg_size,
|
|
ControlFile.lc_collate,
|
|
ControlFile.lc_ctype);
|
|
|
|
return (0);
|
|
}
|