Here is an updated version of the win32 readdir patch.

1) Now puts in exactly the same change as the current-cvs mingw code
does. (see
http://cvs.sourceforge.net/viewcvs.py/mingw/runtime/mingwex/dirent.c?r1=
1.3&r2=1.4, second part of the patch).

2) Updates both xlog.c and slru.c in backend/access/transam/

3) Also updates pg_resetxlog, which also uses readdir() and checks the
errno value after the loop.

Magnus Hagander

src/backend/access/transam/slru.c

@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/backend/access/transam/slru.c,v 1.11 2004/02/10 01:55:24 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/access/transam/slru.c,v 1.12 2004/02/17 03:45:17 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -917,6 +917,12 @@ SlruScanDirectory(SlruCtl ctl, int cutoffPage, bool doDeletions)
 		}
 		errno = 0;
 	}
+#ifdef WIN32
+	/* This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but
+	   not in released version */
+	if (GetLastError() == ERROR_NO_MORE_FILES)
+		errno = 0;
+#endif
 	if (errno)
 		ereport(ERROR,
 				(errcode_for_file_access(),

src/backend/access/transam/xlog.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.135 2004/02/11 22:55:24 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.136 2004/02/17 03:45:17 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1805,6 +1805,12 @@ MoveOfflineLogs(uint32 log, uint32 seg, XLogRecPtr endptr)
 		}
 		errno = 0;
 	}
+#ifdef WIN32
+	/* This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but
+	   not in released version */
+	if (GetLastError() == ERROR_NO_MORE_FILES)
+		errno = 0;
+#endif
 	if (errno)
 		ereport(PANIC,
 				(errcode_for_file_access(),

src/bin/pg_resetxlog/pg_resetxlog.c

@@ -23,7 +23,7 @@
  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/bin/pg_resetxlog/pg_resetxlog.c,v 1.15 2004/02/11 22:55:25 tgl Exp $
+ * $PostgreSQL: pgsql/src/bin/pg_resetxlog/pg_resetxlog.c,v 1.16 2004/02/17 03:45:17 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -611,6 +611,12 @@ KillExistingXLOG(void)
 		}
 		errno = 0;
 	}
+#ifdef WIN32
+	/* This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but
+	   not in released version */
+	if (GetLastError() == ERROR_NO_MORE_FILES)
+		errno = 0;
+#endif
 
 	if (errno)
 	{