There're six test cases:
- mount at a nonexistent mount point
- mount a free loop device
- mount with a wrong fs type
- umount an symlink to device which is not mounted
- umount a path with too long name
- lazy umount a symlink
Signed-off-by: Eryu Guan <eguan@xxxxxxxxxx>
---
tests/generic/067 | 143 ++++++++++++++++++++++++++++++++++++++++++++++++++
tests/generic/067.out | 2 +
tests/generic/group | 1 +
3 files changed, 146 insertions(+)
create mode 100755 tests/generic/067
create mode 100644 tests/generic/067.out
diff --git a/tests/generic/067 b/tests/generic/067
new file mode 100755
index 0000000..7a4840b
--- /dev/null
+++ b/tests/generic/067
@@ -0,0 +1,143 @@
+#! /bin/bash
+# FS QA Test No. 067
+#
+# Some random mount/umount corner case tests
+#
+# - mount at a nonexistent mount point
+# - mount a free loop device
+# - mount with a wrong fs type specified
+# - umount an symlink to device which is not mounted
+# - umount a path with too long name
+# - lazy umount a symlink
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015 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()
+{
+ cd /
+ rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs generic
+_supported_os Linux
+_require_test
+_require_scratch
+_require_loop
+
+rm -f $seqres.full
+
+_scratch_mkfs >>$seqres.full 2>&1
+
+# kernel should not hang nor oops when mounting fs to nonexistent mount point
+mount_nonexistent_mnt()
+{
+ echo "# mount to nonexistent mount point" >>$seqres.full
+ rm -rf $TEST_DIR/nosuchdir
+ $MOUNT_PROG $SCRATCH_DEV $TEST_DIR/nosuchdir >>$seqres.full 2>&1
+}
+
+# fs driver should be able to handle mounting a free loop device gracefully
+# xfs ever hung, "ec53d1d xfs: don't block on buffer read errors" fixed it
+mount_free_loopdev()
+{
+ echo "# mount a free loop device" >>$seqres.full
+ loopdev=`losetup -f`
+ $MOUNT_PROG -t $FSTYP $loopdev $SCRATCH_MNT >>$seqres.full 2>&1
+}
+
+# mount with wrong fs type specified.
+# This should fail gracefully, no hang no oops are expected
+mount_wrong_fstype()
+{
+ local fs=ext4
+ if [ "$FSTYP" == "ext4" ]; then
+ fs=xfs
+ fi
+ echo "# mount with wrong fs type" >>$seqres.full
+ $MOUNT_PROG -t $fs $SCRATCH_DEV $SCRATCH_MNT >>$seqres.full 2>&1
+}
+
+# umount a symlink to device, which is not mounted.
+# This should fail gracefully, no hang no oops are expected
+umount_symlink_device()
+{
+ local symlink=$TEST_DIR/$seq.scratch_dev_symlink
+ rm -f $symlink
+ echo "# umount symlink to device, which is not mounted" >>$seqres.full
+ ln -s $SCRATCH_DEV $symlink
+ $UMOUNT_PROG $symlink >>$seqres.full 2>&1
+}
+
+# umount a path name that is 256 bytes long, this should fail gracefully,
+# and the following umount should not hang nor oops
+umount_toolong_name()
+{
+ local longname=$SCRATCH_MNT/`$PERL_PROG -e 'print "a"x256;'`
+
+ _scratch_mount 2>&1 | tee -a $seqres.full
+
+ echo "# umount a too-long name" >>$seqres.full
+ $UMOUNT_PROG $longname >>$seqres.full 2>&1
+ _scratch_unmount 2>&1 | tee -a $seqres.full
+}
+
+# lazy umount a symlink should not block following umount.
+# This is the test case described in https://lkml.org/lkml/2014/7/21/98
+lazy_umount_symlink()
+{
+ local symlink=$SCRATCH_MNT/$seq.testdir_symlink
+ echo "# lazy umount a symlink" >>$seqres.full
+ _scratch_mount 2>&1 | tee -a $seqres.full
+ mkdir -p $SCRATCH_MNT/testdir
+ rm -f $symlink
+ ln -s $SCRATCH_MNT/testdir $symlink
+
+ $UMOUNT_PROG -l $symlink >>$seqres.full 2>&1
+ # umount $SCRATCH_MNT should not be blocked
+ _scratch_unmount 2>&1 | tee -a $seqres.full
+}
+
+echo "Silence is golden"
+
+mount_nonexistent_mnt
+mount_free_loopdev
+mount_wrong_fstype
+
+umount_symlink_device
+umount_toolong_name
+lazy_umount_symlink
+
+status=0
+exit
diff --git a/tests/generic/067.out b/tests/generic/067.out
new file mode 100644
index 0000000..daa1545
--- /dev/null
+++ b/tests/generic/067.out
@@ -0,0 +1,2 @@
+QA output created by 067
+Silence is golden
diff --git a/tests/generic/group b/tests/generic/group
index d56d3ce..03ad7b8 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -69,6 +69,7 @@
064 auto quick prealloc
065 metadata auto quick
066 metadata auto quick
+067 auto quick mount
068 other auto freeze dangerous stress
069 rw udf auto quick
070 attr udf auto quick stress
--
2.1.0
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