xfstests generic/313: test ctime and mtime are updated on truncate and ftruncate

Regression test for commit:
3972f26 btrfs: update timestamps on truncate()

Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

.gitignore

@@ -85,6 +85,7 @@
 /src/t_mmap_writev
 /src/t_mtab
 /src/t_stripealign
+/src/t_truncate_cmtime
 /src/testx
 /src/trunc
 /src/truncfile

src/Makefile

@@ -11,7 +11,7 @@ TARGETS = dirstress fill fill2 getpagesize holes lstat64 \
 	devzero feature alloc fault fstest t_access_root \
 	godown resvtest writemod makeextents itrash rename \
 	multi_open_unlink dmiperf unwritten_sync genhashnames t_holes \
-	t_mmap_writev
+	t_mmap_writev t_truncate_cmtime
 
 LINUX_TARGETS = xfsctl bstat t_mtab getdevicesize preallo_rw_pattern_reader \
 	preallo_rw_pattern_writer ftrunc trunc fs_perms testx looptest \

src/t_truncate_cmtime.c

@@ -0,0 +1,110 @@
+/*
+ * Test ctime and mtime are updated on truncate(2) and ftruncate(2)
+ *
+ * Copyright (c) 2013 Red Hat, Inc.  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
+ */
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define TEST_MSG "this is a test string"
+
+int do_test(const char *file, int is_ftrunc)
+{
+	int ret;
+	int fd;
+	struct stat statbuf1;
+	struct stat statbuf2;
+
+	ret = 0;
+	fd = open(file, O_RDWR | O_CREAT | O_TRUNC, 0644);
+	if (fd == -1) {
+		perror("open(2) failed");
+		exit(EXIT_FAILURE);
+	}
+
+	ret = write(fd, TEST_MSG, sizeof(TEST_MSG));
+	if (ret == -1) {
+		perror("write(2) failed");
+		exit(EXIT_FAILURE);
+	}
+
+	/* Get timestamps before [f]truncate(2) */
+	ret = fstat(fd, &statbuf1);
+	if (ret == -1) {
+		perror("fstat(2) failed");
+		exit(EXIT_FAILURE);
+	}
+
+	sleep(1);
+	if (is_ftrunc) {
+		ret = ftruncate(fd, 0);
+		if (ret == -1) {
+			perror("ftruncate(2) failed");
+			exit(EXIT_FAILURE);
+		}
+	} else {
+		ret = truncate(file, 0);
+		if (ret == -1) {
+			perror("truncate(2) failed");
+			exit(EXIT_FAILURE);
+		}
+	}
+
+	/* Get timestamps after [f]truncate(2) */
+	ret = fstat(fd, &statbuf2);
+	if (ret == -1) {
+		perror("fstat(2) failed");
+		exit(EXIT_FAILURE);
+	}
+
+	/* Check whether timestamps got updated */
+	if (statbuf1.st_ctime == statbuf2.st_ctime) {
+		fprintf(stderr, "ctime not updated after %s\n",
+			is_ftrunc ? "ftruncate" : "truncate");
+		ret++;
+	}
+	if (statbuf1.st_mtime == statbuf2.st_mtime) {
+		fprintf(stderr, "mtime not updated after %s\n",
+			is_ftrunc ? "ftruncate" : "truncate");
+		ret++;
+	}
+
+	close(fd);
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	int ret;
+	char *testfile;
+
+	ret = 0;
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s <filename>\n", argv[0]);
+		exit(EXIT_FAILURE);
+	}
+	testfile = argv[1];
+
+	ret = do_test(testfile, 0);
+	ret += do_test(testfile, 1);
+
+	exit(ret);
+}

tests/generic/313

@@ -0,0 +1,55 @@
+#! /bin/bash
+# FS QA Test No. 313
+#
+# Check ctime and mtime are updated on truncate(2) and ftruncate(2)
+#
+# Regression test for commit:
+# 3972f26 btrfs: update timestamps on truncate()
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2013 Red Hat, Inc.  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
+#-----------------------------------------------------------------------
+#
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+testfile=$TEST_DIR/testfile.$seq
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -f $testfile
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_fs generic
+_supported_os IRIX Linux
+
+echo "Silence is golden"
+
+$here/src/t_truncate_cmtime $testfile 2>&1
+
+status=0
+exit

tests/generic/313.out

@@ -0,0 +1,2 @@
+QA output created by 313
+Silence is golden

tests/generic/group

@@ -115,3 +115,4 @@
 310 auto
 311 auto metadata log
 312 auto quick prealloc enospc
+313 auto quick