[PATCH v3] xfs/288: test xfs_growfs to ensure rejection if target path isn't an active xfs mountpoint

["Bill O'Donnell" <billodo@redhat.com>]

xfs_growfs manpage clearly states that the target path must be an
active xfs mountpoint. This is a test to ensure that if the target
path isn't an active xfs mountpoint, the command is rejected. The
purpose is to check the command response, but not necessarily the
functionality of xfs_growfs. Test cases include absolute paths,
relative paths, symbolic links, and bind mounts.

Signed-off-by: Bill O'Donnell <billodo@redhat.com>
---

v3: improve commit message and subject line. Use _filter_test_dir
    for absolute pathnames. Use env variable substitutions for
    common fs commands. Send xfs_growfs stdout to /dev/null.
    Remove the use of $tmp.*.
    
v2: acually grow the fs as test proceeds; add filter, preventing
    superfluous stdio verbiage; add test for (unmounted) file; add
    description to commit message to clarify that this isn't a test
    for xfs_growfs functionality, but rather a test of command
    argument accepts and rejections.

 tests/xfs/288     | 123 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/288.out |  23 ++++++++++
 tests/xfs/group   |   1 +
 3 files changed, 147 insertions(+)
 create mode 100755 tests/xfs/288
 create mode 100644 tests/xfs/288.out

diff --git a/tests/xfs/288 b/tests/xfs/288
new file mode 100755
index 0000000..da4c639
--- /dev/null
+++ b/tests/xfs/288
@@ -0,0 +1,123 @@
+#! /bin/bash
+# FS QA Test 288
+#
+# Test to ensure xfs_growfs command rejects non-existent mount points
+# and accepts mounted targets.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2017 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`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    $UMOUNT_PROG $tmpdir
+    $UMOUNT_PROG $tmpbind
+    rmdir $tmpdir
+    rm -f $tmpsymlink
+    rmdir $tmpbind
+    rm -f $tmpfile
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs xfs
+_supported_os Linux
+_require_test
+_require_loop
+
+tmpfile=$TEST_DIR/fsfile
+tmpdir=$TEST_DIR/tmpdir
+tmpsymlink=$TEST_DIR/tmpsymlink.$$
+tmpbind=$TEST_DIR/tmpbind.$$
+
+mkdir -p $tmpdir || _fail "!!! failed to create temp mount dir"
+
+echo "=== mkfs.xfs ==="
+$MKFS_XFS_PROG -d file,name=$tmpfile,size=16m -f >/dev/null 2>&1
+
+echo "=== truncate ==="
+$XFS_IO_PROG -fc "truncate 256m" $tmpfile
+
+echo "=== xfs_growfs - unmounted, command should be rejected ==="
+$XFS_GROWFS_PROG $tmpdir 2>&1 |  _filter_test_dir
+
+echo "=== xfs_growfs - check relative path, unmounted ==="
+cd $TEST_DIR
+$XFS_GROWFS_PROG ./tmpdir 2>&1 | _filter_test_dir
+
+echo "=== xfs_growfs - no path, unmounted ==="
+$XFS_GROWFS_PROG tmpdir 2>&1 | _filter_test_dir
+
+echo "=== xfs_growfs - plain file - should be rejected ==="
+$XFS_GROWFS_PROG $tmpfile 2>&1 | _filter_test_dir
+
+echo "=== mount ==="
+$MOUNT_PROG -o loop $tmpfile $tmpdir || _fail "!!! failed to loopback mount"
+
+echo "=== xfs_growfs - mounted - check absolute path ==="
+$XFS_GROWFS_PROG -D 8192 $tmpdir | _filter_test_dir > /dev/null
+
+echo "=== xfs_growfs - check relative path ==="
+$XFS_GROWFS_PROG -D 12288 ./tmpdir > /dev/null
+
+echo "=== xfs_growfs - no path ==="
+$XFS_GROWFS_PROG -D 16384 tmpdir > /dev/null
+
+echo "=== xfs_growfs - symbolic link ==="
+ln -s $tmpdir $tmpsymlink
+$XFS_GROWFS_PROG -D 20480 $tmpsymlink | _filter_test_dir > /dev/null
+
+echo "=== xfs_growfs - symbolic link using relative path ==="
+$XFS_GROWFS_PROG -D 24576 ./tmpsymlink.$$ > /dev/null
+
+echo "=== xfs_growfs - symbolic link using no path ==="
+$XFS_GROWFS_PROG -D 28672 tmpsymlink.$$ > /dev/null
+
+echo "=== xfs_growfs - bind mount ==="
+mkdir $tmpbind
+$MOUNT_PROG -o bind $tmpdir $tmpbind
+$XFS_GROWFS_PROG -D 32768 $tmpbind | _filter_test_dir > /dev/null
+
+echo "=== xfs_growfs - bind mount - relative path ==="
+$XFS_GROWFS_PROG -D 36864 ./tmpbind.$$ > /dev/null
+
+echo "=== xfs_growfs - bind mount - no path ==="
+$XFS_GROWFS_PROG -D 40960 tmpbind.$$ > /dev/null
+
+echo "=== xfs_growfs - plain file - should be rejected ==="
+$XFS_GROWFS_PROG $tmpfile 2>&1 | _filter_test_dir
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/288.out b/tests/xfs/288.out
new file mode 100644
index 0000000..f7c2362
--- /dev/null
+++ b/tests/xfs/288.out
@@ -0,0 +1,23 @@
+QA output created by 288
+=== mkfs.xfs ===
+=== truncate ===
+=== xfs_growfs - unmounted, command should be rejected ===
+xfs_growfs: TEST_DIR/tmpdir is not a mounted XFS filesystem
+=== xfs_growfs - check relative path, unmounted ===
+xfs_growfs: ./tmpdir is not a mounted XFS filesystem
+=== xfs_growfs - no path, unmounted ===
+xfs_growfs: tmpdir is not a mounted XFS filesystem
+=== xfs_growfs - plain file - should be rejected ===
+xfs_growfs: TEST_DIR/fsfile is not a mounted XFS filesystem
+=== mount ===
+=== xfs_growfs - mounted - check absolute path ===
+=== xfs_growfs - check relative path ===
+=== xfs_growfs - no path ===
+=== xfs_growfs - symbolic link ===
+=== xfs_growfs - symbolic link using relative path ===
+=== xfs_growfs - symbolic link using no path ===
+=== xfs_growfs - bind mount ===
+=== xfs_growfs - bind mount - relative path ===
+=== xfs_growfs - bind mount - no path ===
+=== xfs_growfs - plain file - should be rejected ===
+xfs_growfs: TEST_DIR/fsfile is not a mounted XFS filesystem
diff --git a/tests/xfs/group b/tests/xfs/group
index 75769f9..0dcb8e0 100644
--- a/tests/xfs/group
+++ b/tests/xfs/group
@@ -285,6 +285,7 @@
 285 dangerous_fuzzers dangerous_scrub
 286 dangerous_fuzzers dangerous_scrub dangerous_online_repair
 287 auto dump quota quick
+288 growfs auto quick
 290 auto rw prealloc quick ioctl zero
 291 auto repair
 292 auto mkfs quick
-- 
2.9.3