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|
#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2022 Oracle. All Rights Reserved.
#
# FS QA Test No. 674
#
# Functional test for dropping suid and sgid bits as part of a deduplication.
#
. ./common/preamble
_begin_fstest auto clone quick perms dedupe
# Import common functions.
. ./common/filter
. ./common/reflink
# real QA test starts here
# Modify as appropriate.
_supported_fs generic
_require_user
_require_scratch_dedupe
_require_xfs_io_command dedupe
_scratch_mkfs >> $seqres.full
_scratch_mount
_require_congruent_file_oplen $SCRATCH_MNT 1048576
chmod a+rw $SCRATCH_MNT/
setup_testfile() {
rm -f $SCRATCH_MNT/a $SCRATCH_MNT/b
_pwrite_byte 0x58 0 1m $SCRATCH_MNT/a >> $seqres.full
_pwrite_byte 0x58 0 1m $SCRATCH_MNT/b >> $seqres.full
chmod a+r $SCRATCH_MNT/b
sync
}
nr_grows=0
commit_and_check() {
local user="$1"
md5sum $SCRATCH_MNT/a | _filter_scratch
stat -c '%a %A %n' $SCRATCH_MNT/a | _filter_scratch
local before_freesp=$(_get_available_space $SCRATCH_MNT)
local cmd="$XFS_IO_PROG -c 'dedupe $SCRATCH_MNT/b 0 0 1m' $SCRATCH_MNT/a"
if [ -n "$user" ]; then
su - "$user" -c "$cmd" >> $seqres.full
else
$SHELL -c "$cmd" >> $seqres.full
fi
_scratch_cycle_mount
md5sum $SCRATCH_MNT/a | _filter_scratch
stat -c '%a %A %n' $SCRATCH_MNT/a | _filter_scratch
local after_freesp=$(_get_available_space $SCRATCH_MNT)
echo "before: $before_freesp; after: $after_freesp" >> $seqres.full
if [ $after_freesp -le $before_freesp ]; then
# allow free space to grow after dedup once; bcachefs has to allocate the reflink btree
if [ $nr_grows -gt 0 ]; then
echo "expected more free space after dedupe"
fi
nr_grows=$(( nr_grows + 1 ))
fi
# Blank line in output
echo
}
# Commit to a non-exec file by an unprivileged user clears suid but leaves
# sgid.
echo "Test 1 - qa_user, non-exec file"
setup_testfile
chmod a+rws $SCRATCH_MNT/a
commit_and_check "$qa_user"
# Commit to a group-exec file by an unprivileged user clears suid and sgid.
echo "Test 2 - qa_user, group-exec file"
setup_testfile
chmod g+x,a+rws $SCRATCH_MNT/a
commit_and_check "$qa_user"
# Commit to a user-exec file by an unprivileged user clears suid but not sgid.
echo "Test 3 - qa_user, user-exec file"
setup_testfile
chmod u+x,a+rws,g-x $SCRATCH_MNT/a
commit_and_check "$qa_user"
# Commit to a all-exec file by an unprivileged user clears suid and sgid.
echo "Test 4 - qa_user, all-exec file"
setup_testfile
chmod a+rwxs $SCRATCH_MNT/a
commit_and_check "$qa_user"
# Commit to a non-exec file by root clears suid but leaves sgid.
echo "Test 5 - root, non-exec file"
setup_testfile
chmod a+rws $SCRATCH_MNT/a
commit_and_check
# Commit to a group-exec file by root clears suid and sgid.
echo "Test 6 - root, group-exec file"
setup_testfile
chmod g+x,a+rws $SCRATCH_MNT/a
commit_and_check
# Commit to a user-exec file by root clears suid but not sgid.
echo "Test 7 - root, user-exec file"
setup_testfile
chmod u+x,a+rws,g-x $SCRATCH_MNT/a
commit_and_check
# Commit to a all-exec file by root clears suid and sgid.
echo "Test 8 - root, all-exec file"
setup_testfile
chmod a+rwxs $SCRATCH_MNT/a
commit_and_check
# success, all done
status=0
exit
|
