Files
apfstests/tests/generic/317
T
Eryu Guan 69eb6281a9 fstests: _fail test by default when _scratch_mount fails
Previously _scratch_mount didn't check the mount status and most
tests continue to run even if the mount failed (unless test checks
for the mount status explicitly). This would result in running tests
on the underlying filesystem (usually rootfs) and implicit test
failures, and such failures can be annoying and are usually hard to
debug.

Now _fail test by default if _scratch_mount failed and introduce
_try_scratch_mount for tests that need to check mount results
themselves.

Suggested-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
2018-02-22 14:02:44 +08:00

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#! /bin/bash
# FS QA Test No. 317
#
# Check uid/gid to/from disk with a user namespace. A new file
# will be created from inside a userns. We check that the uid/gid
# is correct from both inside the userns and also from init_user_ns.
# We will then unmount and remount the file system and check the
# uid/gid from both inside the userns and from init_user_ns to show
# that the correct uid was flushed and brought back from disk.
#
#-----------------------------------------------------------------------
# Copyright (C) 2013 Oracle, 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!
_cleanup()
{
cd /
_scratch_unmount >/dev/null 2>&1
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/attr
file=$SCRATCH_MNT/file1
# real QA test starts here
_supported_fs generic
# only Linux supports user namespace
_supported_os Linux
[ -x $lstat64 ] || _notrun "$lstat64 executable not found"
rm -f $seqres.full
_require_scratch
_require_user
_require_ugid_map
_require_userns
qa_user_id=`id -u $qa_user`
_filter_output()
{
sed \
-e "s/$qa_user_id/qa_user/g" \
-e "s!$SCRATCH_MNT!\$SCRATCH_MNT!"
}
_print_numeric_uid()
{
echo "From init_user_ns"
src/lstat64 $file |head -3 |_filter_output
echo "From user_ns"
src/nsexec -s -U -M "0 $qa_user_id 1000" -G "0 $qa_user_id 1000" src/lstat64 $file |head -3 |_filter_output
}
_scratch_unmount >/dev/null 2>&1
echo "*** MKFS ***" >>$seqres.full
echo "" >>$seqres.full
_scratch_mkfs >>$seqres.full 2>&1 || _fail "mkfs failed"
_scratch_mount
chmod 777 $SCRATCH_MNT
# create $file as "root" in userns, which is $qa_user in parent namespace
src/nsexec -s -U -M "0 $qa_user_id 1000" -G "0 $qa_user_id 1000" touch $file
_print_numeric_uid
echo ""
echo "*** Remounting ***"
echo ""
sync
_scratch_cycle_mount >>$seqres.full 2>&1 || _fail "remount failed"
_print_numeric_uid
_scratch_unmount >/dev/null 2>&1
status=0
exit