Arrange for the postmaster (and standalone backends, initdb, etc) to

chdir into PGDATA and subsequently use relative paths instead of absolute
paths to access all files under PGDATA.  This seems to give a small
performance improvement, and it should make the system more robust
against naive DBAs doing things like moving a database directory that
has a live postmaster in it.  Per recent discussion.

1 files changed, 6 insertions, 4 deletions

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index b38f9f9265..e8261c8231 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.204 2005/05/06 17:24:52 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.205 2005/07/04 04:51:45 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -365,15 +365,17 @@ BootstrapMain(int argc, char *argv[])
 	Assert(DataDir);
 	ValidatePgVersion(DataDir);
 
+	/* Change into DataDir (if under postmaster, should be done already) */
+	if (!IsUnderPostmaster)
+		ChangeToDataDir();
+
 	/* If standalone, create lockfile for data directory */
 	if (!IsUnderPostmaster)
-		CreateDataDirLockFile(DataDir, false);
+		CreateDataDirLockFile(false);
 
 	SetProcessingMode(BootstrapProcessing);
 	IgnoreSystemIndexes(true);
 
-	XLOGPathInit();
-
 	BaseInit();
 
 	/* needed to get LWLocks */