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Move pg_controldata from /contrib to src/bin.

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This commit is contained in:
Bruce Momjian
2002-08-16 20:34:06 +00:00
parent 7ffe65fefb
commit cd1f4087c9
7 changed files with 116 additions and 37 deletions
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32
contrib/pg_controldata/README.pg_controldata
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@ -1,32 +0,0 @@
I had a need to read such things as the backend locale and the catalog
version number from the current database, and couldn't find any existing
program to do that.
The attached utility produces output like this:
$ pg_controldata
pg_control version number: 71
Catalog version number: 200101061
Database state: IN_PRODUCTION
pg_control last modified: Sat Mar 10 00:07:55 2001
Current log file id: 0
Next log file segment: 9
Latest checkpoint location: 0/88CAA20
Prior checkpoint location: 0/70A5D48
Latest checkpoint's REDO location: 0/88CAA20
Latest checkpoint's UNDO location: 0/0
Latest checkpoint's StartUpID: 22
Latest checkpoint's NextXID: 4711
Latest checkpoint's NextOID: 444704
Time of latest checkpoint: Sat Mar 10 00:07:52 2001
Database block size: 8192
Blocks per segment of large relation: 131072
LC_COLLATE: C
LC_CTYPE: C
To access the pg_control file, the program must be run as the Postgres user,
and PGDATA must be set correctly in its environment.
--
Oliver Elphick <olly@lfix.co.uk>

147
contrib/pg_controldata/pg_controldata.c
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@ -1,147 +0,0 @@
/*
* 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 1.7 2002/08/14 03:01:43 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"
"Maximum length of names: %u\n"
"Maximum number of function arguments: %u\n"
"Date/time type storage: %s\n"
"Maximum length of locale name: %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.nameDataLen,
ControlFile.funcMaxArgs,
(ControlFile.enableIntTimes ?
"64-bit integers" : "Floating point"),
ControlFile.localeBuflen,
ControlFile.lc_collate,
ControlFile.lc_ctype);
return (0);
}