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Make use of xlog_internal.h's macros in WAL-related utilities.
Commit 179cdd09
added macros to check if a filename is a WAL segment
or other such file. However there were still some instances of the
strlen + strspn combination to check for that in WAL-related utilities
like pg_archivecleanup. Those checks can be replaced with the macros.
This patch makes use of the macros in those utilities and
which would make the code a bit easier to read.
Back-patch to 9.5.
Michael Paquier
This commit is contained in:
parent
cd7030ff08
commit
163e29dc38
@ -32,6 +32,8 @@
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#include "pg_getopt.h"
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#include "access/xlog_internal.h"
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const char *progname;
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/* Options and defaults */
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@ -57,7 +59,7 @@ char *restartWALFileName; /* the file from which we can restart restore */
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char *priorWALFileName; /* the file we need to get from archive */
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char WALFilePath[MAXPGPATH]; /* the file path including archive */
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char restoreCommand[MAXPGPATH]; /* run this to restore */
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char exclusiveCleanupFileName[MAXPGPATH]; /* the file we need to
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char exclusiveCleanupFileName[MAXFNAMELEN]; /* the file we need to
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* get from archive */
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/*
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@ -113,11 +115,6 @@ struct stat stat_buf;
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* folded in to later versions of this program.
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*/
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#define XLOG_DATA_FNAME_LEN 24
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/* Reworked from access/xlog_internal.h */
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#define XLogFileName(fname, tli, log, seg) \
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snprintf(fname, XLOG_DATA_FNAME_LEN + 1, "%08X%08X%08X", tli, log, seg)
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/*
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* Initialize allows customized commands into the warm standby program.
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*
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@ -182,10 +179,7 @@ CustomizableNextWALFileReady()
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* If it's a backup file, return immediately. If it's a regular file
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* return only if it's the right size already.
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*/
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if (strlen(nextWALFileName) > 24 &&
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strspn(nextWALFileName, "0123456789ABCDEF") == 24 &&
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strcmp(nextWALFileName + strlen(nextWALFileName) - strlen(".backup"),
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".backup") == 0)
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if (IsBackupHistoryFileName(nextWALFileName))
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{
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nextWALFileType = XLOG_BACKUP_LABEL;
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return true;
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@ -261,8 +255,7 @@ CustomizableCleanupPriorWALFiles(void)
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* are not removed in the order they were originally written,
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* in case this worries you.
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*/
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if (strlen(xlde->d_name) == XLOG_DATA_FNAME_LEN &&
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strspn(xlde->d_name, "0123456789ABCDEF") == XLOG_DATA_FNAME_LEN &&
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if (IsXLogFileName(xlde->d_name) &&
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strcmp(xlde->d_name + 8, exclusiveCleanupFileName + 8) < 0)
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{
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#ifdef WIN32
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@ -366,7 +359,7 @@ SetWALFileNameForCleanup(void)
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}
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}
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XLogFileName(exclusiveCleanupFileName, tli, log, seg);
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XLogFileNameById(exclusiveCleanupFileName, tli, log, seg);
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return cleanup;
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}
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@ -740,10 +733,7 @@ main(int argc, char **argv)
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* Check for initial history file: always the first file to be requested
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* It's OK if the file isn't there - all other files need to wait
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*/
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if (strlen(nextWALFileName) > 8 &&
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strspn(nextWALFileName, "0123456789ABCDEF") == 8 &&
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strcmp(nextWALFileName + strlen(nextWALFileName) - strlen(".history"),
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".history") == 0)
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if (IsTLHistoryFileName(nextWALFileName))
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{
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nextWALFileType = XLOG_HISTORY;
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if (RestoreWALFileForRecovery())
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@ -21,6 +21,8 @@
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#include "pg_getopt.h"
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#include "access/xlog_internal.h"
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const char *progname;
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/* Options and defaults */
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@ -31,7 +33,7 @@ char *additional_ext = NULL; /* Extension to remove from filenames */
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char *archiveLocation; /* where to find the archive? */
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char *restartWALFileName; /* the file from which we can restart restore */
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char WALFilePath[MAXPGPATH]; /* the file path including archive */
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char exclusiveCleanupFileName[MAXPGPATH]; /* the oldest file we
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char exclusiveCleanupFileName[MAXFNAMELEN]; /* the oldest file we
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* want to remain in
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* archive */
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@ -51,12 +53,6 @@ char exclusiveCleanupFileName[MAXPGPATH]; /* the oldest file we
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* folded in to later versions of this program.
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*/
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#define XLOG_DATA_FNAME_LEN 24
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/* Reworked from access/xlog_internal.h */
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#define XLogFileName(fname, tli, log, seg) \
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snprintf(fname, XLOG_DATA_FNAME_LEN + 1, "%08X%08X%08X", tli, log, seg)
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#define XLOG_BACKUP_FNAME_LEN 40
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/*
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* Initialize allows customized commands into the archive cleanup program.
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*
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@ -110,7 +106,7 @@ CleanupPriorWALFiles(void)
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{
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/*
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* Truncation is essentially harmless, because we skip names of
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* length other than XLOG_DATA_FNAME_LEN. (In principle, one
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* length other than XLOG_FNAME_LEN. (In principle, one
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* could use a 1000-character additional_ext and get trouble.)
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*/
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strlcpy(walfile, xlde->d_name, MAXPGPATH);
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@ -129,8 +125,7 @@ CleanupPriorWALFiles(void)
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* file. Note that this means files are not removed in the order
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* they were originally written, in case this worries you.
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*/
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if (strlen(walfile) == XLOG_DATA_FNAME_LEN &&
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strspn(walfile, "0123456789ABCDEF") == XLOG_DATA_FNAME_LEN &&
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if (IsXLogFileName(walfile) &&
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strcmp(walfile + 8, exclusiveCleanupFileName + 8) < 0)
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{
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/*
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@ -202,13 +197,12 @@ SetWALFileNameForCleanup(void)
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* 000000010000000000000010.00000020.backup is after
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* 000000010000000000000010.
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*/
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if (strlen(restartWALFileName) == XLOG_DATA_FNAME_LEN &&
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strspn(restartWALFileName, "0123456789ABCDEF") == XLOG_DATA_FNAME_LEN)
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if (IsXLogFileName(restartWALFileName))
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{
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strcpy(exclusiveCleanupFileName, restartWALFileName);
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fnameOK = true;
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}
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else if (strlen(restartWALFileName) == XLOG_BACKUP_FNAME_LEN)
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else if (IsBackupHistoryFileName(restartWALFileName))
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{
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int args;
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uint32 tli = 1,
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@ -225,7 +219,7 @@ SetWALFileNameForCleanup(void)
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* Use just the prefix of the filename, ignore everything after
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* first period
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*/
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XLogFileName(exclusiveCleanupFileName, tli, log, seg);
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XLogFileNameById(exclusiveCleanupFileName, tli, log, seg);
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}
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}
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@ -261,7 +261,7 @@ main(int argc, char *argv[])
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break;
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case 'l':
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if (strspn(optarg, "01234567890ABCDEFabcdef") != 24)
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if (strspn(optarg, "01234567890ABCDEFabcdef") != XLOG_FNAME_LEN)
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{
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fprintf(stderr, _("%s: invalid argument for option %s\n"), progname, "-l");
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fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
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@ -976,8 +976,7 @@ KillExistingXLOG(void)
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while (errno = 0, (xlde = readdir(xldir)) != NULL)
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{
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if (strlen(xlde->d_name) == 24 &&
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strspn(xlde->d_name, "0123456789ABCDEF") == 24)
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if (IsXLogFileName(xlde->d_name))
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{
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snprintf(path, MAXPGPATH, "%s/%s", XLOGDIR, xlde->d_name);
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if (unlink(path) < 0)
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@ -1027,9 +1026,9 @@ KillExistingArchiveStatus(void)
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while (errno = 0, (xlde = readdir(xldir)) != NULL)
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{
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if (strspn(xlde->d_name, "0123456789ABCDEF") == 24 &&
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(strcmp(xlde->d_name + 24, ".ready") == 0 ||
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strcmp(xlde->d_name + 24, ".done") == 0))
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if (strspn(xlde->d_name, "0123456789ABCDEF") == XLOG_FNAME_LEN &&
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(strcmp(xlde->d_name + XLOG_FNAME_LEN, ".ready") == 0 ||
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strcmp(xlde->d_name + XLOG_FNAME_LEN, ".done") == 0))
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{
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snprintf(path, MAXPGPATH, "%s/%s", ARCHSTATDIR, xlde->d_name);
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if (unlink(path) < 0)
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@ -137,13 +137,20 @@ typedef XLogLongPageHeaderData *XLogLongPageHeader;
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*/
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#define MAXFNAMELEN 64
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/* Length of XLog file name */
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#define XLOG_FNAME_LEN 24
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#define XLogFileName(fname, tli, logSegNo) \
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snprintf(fname, MAXFNAMELEN, "%08X%08X%08X", tli, \
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(uint32) ((logSegNo) / XLogSegmentsPerXLogId), \
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(uint32) ((logSegNo) % XLogSegmentsPerXLogId))
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#define XLogFileNameById(fname, tli, log, seg) \
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snprintf(fname, MAXFNAMELEN, "%08X%08X%08X", tli, log, seg)
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#define IsXLogFileName(fname) \
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(strlen(fname) == 24 && strspn(fname, "0123456789ABCDEF") == 24)
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(strlen(fname) == XLOG_FNAME_LEN && \
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strspn(fname, "0123456789ABCDEF") == XLOG_FNAME_LEN)
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/*
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* XLOG segment with .partial suffix. Used by pg_receivexlog and at end of
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@ -151,9 +158,9 @@ typedef XLogLongPageHeaderData *XLogLongPageHeader;
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* be complete yet.
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*/
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#define IsPartialXLogFileName(fname) \
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(strlen(fname) == 24 + strlen(".partial") && \
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strspn(fname, "0123456789ABCDEF") == 24 && \
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strcmp((fname) + 24, ".partial") == 0)
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(strlen(fname) == XLOG_FNAME_LEN + strlen(".partial") && \
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strspn(fname, "0123456789ABCDEF") == XLOG_FNAME_LEN && \
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strcmp((fname) + XLOG_FNAME_LEN, ".partial") == 0)
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#define XLogFromFileName(fname, tli, logSegNo) \
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do { \
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@ -188,8 +195,8 @@ typedef XLogLongPageHeaderData *XLogLongPageHeader;
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(uint32) ((logSegNo) % XLogSegmentsPerXLogId), offset)
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#define IsBackupHistoryFileName(fname) \
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(strlen(fname) > 24 && \
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strspn(fname, "0123456789ABCDEF") == 24 && \
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(strlen(fname) > XLOG_FNAME_LEN && \
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strspn(fname, "0123456789ABCDEF") == XLOG_FNAME_LEN && \
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strcmp((fname) + strlen(fname) - strlen(".backup"), ".backup") == 0)
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#define BackupHistoryFilePath(path, tli, logSegNo, offset) \
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