Remove unportable use of strptime() to parse recovery target time spec.

Instead use our own abstimein code, which is more flexible anyway.

Author: tglsfdc

src/backend/access/transam/recovery.conf.sample

@@ -3,12 +3,12 @@
 # -------------------------------
 #
 # Edit this file to provide the parameters that PostgreSQL
-# needs to perform an archive recovery of a database
+# needs to perform an archive recovery of a database.
 #
 # If "recovery.conf" is present in the PostgreSQL data directory, it is
 # read on postmaster startup.  After successful recovery, it is renamed
-# to "recovery.done" to ensure that we do not accidentally re-enter archive
-# recovery mode.
+# to "recovery.done" to ensure that we do not accidentally re-enter
+# archive recovery mode.
 #
 # This file consists of lines of the form:
 #
@@ -18,15 +18,15 @@
 #
 # Comments are introduced with '#'.
 #
-# The complete list of option names and
-# allowed values can be found in the PostgreSQL documentation. The
-# commented-out settings shown below are sample values.
+# The complete list of option names and allowed values can be found
+# in the PostgreSQL documentation. The commented-out settings shown below
+# are example values.
 #
 #---------------------------------------------------------------------------
 # REQUIRED PARAMETERS
 #---------------------------------------------------------------------------
 #
-# restore command
+# restore_command
 #
 # specifies the shell command that is executed to copy log files
 # back from archival storage.  The command string may contain %f,
@@ -50,21 +50,17 @@
 #
 # By default, recovery will rollforward to the end of the WAL log.
 # If you want to stop rollforward before that point, you
-# MUST set a recovery target.
+# must set a recovery target.
 #
 # You may set a recovery target either by transactionId, or
 # by timestamp. Recovery may either include or exclude the
-# records with the recovery target value (ie, stop either just
-# after or just before the given target).
+# transaction(s) with the recovery target value (ie, stop either
+# just after or just before the given target, respectively).
 #
-#recovery_target_time = '2004-07-14 22:39:00'
+#recovery_target_time = '2004-07-14 22:39:00 EST'
 #
-# note: target time is interpreted by strptime() and must therefore be
-# given in your system's default timezone.
+#recovery_target_xid = '1100842'
 #
-#recovery_target_xid = '11000'
-#
-# true or false
-#recovery_target_inclusive = 'true'
+#recovery_target_inclusive = 'true'		# 'true' or 'false'
 #
 #---------------------------------------------------------------------------

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 1.148 2004/07/19 02:47:05 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.149 2004/07/19 14:34:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -3196,8 +3196,6 @@ readRecoveryCommandFile(void)
 			recoveryTargetExact = true;
 		}
 		else if (strcmp(tok1,"recovery_target_time") == 0) {
-			struct  tm tm;
-
 			/*
 			 * if recovery_target_xid specified, then this overrides
 			 * recovery_target_time
@@ -3207,23 +3205,17 @@ readRecoveryCommandFile(void)
 			recoveryTarget = true;
 			recoveryTargetExact = false;
 			/*
-			 * convert the time string given
-			 * by the user to the time_t format.
+			 * Convert the time string given by the user to the time_t format.
+			 * We use type abstime's input converter because we know abstime
+			 * has the same representation as time_t.
 			 */
-			if (strptime(tok2, "%Y-%m-%d %H:%M:%S", &tm) == NULL)
-				ereport(FATAL,
-						(errmsg("invalid recovery_target_time \"%s\"",
-								tok2),
-						 errhint("Correct format is YYYY-MM-DD hh:mm:ss.")));
-			recoveryTargetTime = mktime(&tm);
-			if (recoveryTargetTime == (time_t) -1)
-				ereport(FATAL,
-						(errmsg("invalid recovery_target_time \"%s\"",
-								tok2),
-						 errhint("Correct format is YYYY-MM-DD hh:mm:ss.")));
+			recoveryTargetTime = (time_t)
+				DatumGetAbsoluteTime(DirectFunctionCall1(abstimein,
+														 CStringGetDatum(tok2)));
 			ereport(LOG,
 					(errmsg("recovery_target_time = %s",
-							tok2)));
+							DatumGetCString(DirectFunctionCall1(abstimeout,
+																AbsoluteTimeGetDatum((AbsoluteTime) recoveryTargetTime))))));
 		}
 		else if (strcmp(tok1,"recovery_target_inclusive") == 0) {
 			/*