From c755f6027f41f1fab78b3bebad5a64128d81d728 Mon Sep 17 00:00:00 2001
From: "Thomas G. Lockhart" <lockhart@fourpalms.org>
Date: Sun, 4 Aug 2002 06:53:10 +0000
Subject: [PATCH] Implement WAL log location control using "-X" or PGXLOG.
---
src/backend/access/transam/xlog.c | 23 ++++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)
diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 57e2dc6053a..fa9cc90dd53 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.98 2002/06/20 20:29:25 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.99 2002/08/04 06:53:10 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -389,7 +389,7 @@ static ControlFileData *ControlFile = NULL;
/* File path names */
-static char XLogDir[MAXPGPATH];
+static char XLogDir[MAXPGPATH] = "";
static char ControlFilePath[MAXPGPATH];
/*
@@ -2065,11 +2065,28 @@ ValidXLOGHeader(XLogPageHeader hdr, int emode, bool checkSUI)
* I/O and compatibility-check functions, but there seems no need currently.
*/
+void
+SetXLogDir(char *path)
+{
+ if (path != NULL)
+ {
+ if (strlen(path) >= MAXPGPATH)
+ elog(FATAL, "XLOG path '%s' is too long"
+ "; maximum length is %d characters", path, MAXPGPATH-1);
+ strcpy(XLogDir, path);
+ }
+ else
+ {
+ snprintf(XLogDir, MAXPGPATH, "%s/pg_xlog", DataDir);
+ }
+}
+
void
XLOGPathInit(void)
{
/* Init XLOG file paths */
- snprintf(XLogDir, MAXPGPATH, "%s/pg_xlog", DataDir);
+ if (strlen(XLogDir) <= 0)
+ SetXLogDir(NULL);
snprintf(ControlFilePath, MAXPGPATH, "%s/global/pg_control", DataDir);
}
--
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