Use separate SQLSTATE codes for file not found/file exists, rather than

lumping them into ERRCODE_UNDEFINED_OBJECT/ERRCODE_DUPLICATE_OBJECT.
This seems reasonable since 'object' was meant to refer to 'object in the
database' and a file is outside the database.  Per request from Dave
Cramer.

src/backend/utils/error/elog.c

@@ -37,7 +37,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/error/elog.c,v 1.119 2003/08/08 21:42:11 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/error/elog.c,v 1.120 2003/08/26 21:15:27 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -530,14 +530,14 @@ errcode_for_file_access(void)
 			edata->sqlerrcode = ERRCODE_INSUFFICIENT_PRIVILEGE;
 			break;
 
-			/* Object not found */
+			/* File not found */
 		case ENOENT:			/* No such file or directory */
-			edata->sqlerrcode = ERRCODE_UNDEFINED_OBJECT;
+			edata->sqlerrcode = ERRCODE_UNDEFINED_FILE;
 			break;
 
-			/* Duplicate object */
+			/* Duplicate file */
 		case EEXIST:			/* File exists */
-			edata->sqlerrcode = ERRCODE_DUPLICATE_OBJECT;
+			edata->sqlerrcode = ERRCODE_DUPLICATE_FILE;
 			break;
 
 			/* Wrong object type or state */

src/include/utils/errcodes.h

@@ -11,7 +11,7 @@
  *
  * Copyright (c) 2003, PostgreSQL Global Development Group
  *
- * $Id: errcodes.h,v 1.4 2003/08/04 00:43:32 momjian Exp $
+ * $Id: errcodes.h,v 1.5 2003/08/26 21:15:27 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -294,6 +294,8 @@
 /* Class 58 - System Error (class borrowed from DB2) */
 /* (we define this as errors external to PostgreSQL itself) */
 #define ERRCODE_IO_ERROR					MAKE_SQLSTATE('5','8', '0','3','0')
+#define ERRCODE_UNDEFINED_FILE				MAKE_SQLSTATE('5','8', 'P','0','1')
+#define ERRCODE_DUPLICATE_FILE				MAKE_SQLSTATE('5','8', 'P','0','2')
 
 /* Class F0 - Configuration File Error (PostgreSQL-specific error class) */
 #define ERRCODE_CONFIG_FILE_ERROR			MAKE_SQLSTATE('F','0', '0','0','0')