add a test for ctimes updates in futimens

Add a test to check if we update the ctime properly if not updating
the mtime in futimens.

Uses a C program contributed by Eric Blake <ebb9@byu.net>.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>

221

@@ -0,0 +1,49 @@
+#! /bin/sh
+# FS QA Test No. 221
+#
+# Check ctime updates when calling futimens without UTIME_OMIT for the
+# mtime entry.
+#
+# Based on a bug report and testcase from Eric Blake <ebb9@byu.net>.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2010 Christoph Hellwig.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+#-----------------------------------------------------------------------
+#
+# creator
+owner=hch@lst.de
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+
+# get standard environment, filters and checks
+. ./common.rc
+
+# real QA test starts here
+_supported_fs generic
+_supported_os Linux
+
+echo "Silence is golden."
+
+(cd $TEST_DIR && $here/src/t_futimens)
+
+status=0
+exit $status

221.out

@@ -0,0 +1,2 @@
+QA output created by 221
+Silence is golden.

group

@@ -330,3 +330,4 @@ prealloc
 218 auto fsr quick
 219 auto quota quick
 220 auto quota quick
+221 auto metadata quick

src/Makefile

@@ -15,7 +15,8 @@ TARGETS = dirstress fill fill2 getpagesize holes lstat64 \
 LINUX_TARGETS = xfsctl bstat t_mtab getdevicesize \
 	preallo_rw_pattern_reader preallo_rw_pattern_writer ftrunc trunc \
 	fs_perms testx looptest locktest unwritten_mmap \
-	bulkstat_unlink_test bulkstat_unlink_test_modified t_dir_offset
+	bulkstat_unlink_test bulkstat_unlink_test_modified t_dir_offset \
+	t_futimens
 
 ifeq ($(HAVE_XLOG_ASSIGN_LSN), true)
 LINUX_TARGETS += loggen

src/t_futimens.c

@@ -0,0 +1,32 @@
+/*
+ * Check ctime updates when calling futimens without UTIME_OMIT for the
+ * mtime entry.
+ *
+ * Copyright (c) 2009 Eric Blake <ebb9@byu.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ */
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+
+int
+main(int argc, char **argv)
+{
+	int fd = creat ("file", 0600);
+	struct stat st1, st2;
+	struct timespec t[2] = { { 1000000000, 0 }, { 0, UTIME_OMIT } };
+
+	fstat(fd, &st1);
+	sleep(1);
+	futimens(fd, t);
+	fstat(fd, &st2);
+
+	if (st1.st_ctime == st2.st_ctime)
+		printf("failed to update ctime!\n");
+	return 0;
+}