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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017 Ernesto A. Fernandez. All Rights Reserved.
#
# FS QA Test 449
#
# Fill the device and set as many extended attributes to a file as
# possible. Then call setfacl on it and, if this fails for lack of
# space, test that the permissions remain the same.
#
. ./common/preamble
_begin_fstest auto quick acl attr enospc
# Import common functions.
. ./common/filter
. ./common/attr
# real QA test starts here
# Modify as appropriate.
_supported_fs generic
_require_scratch
_require_test
_require_acls
_require_attrs trusted
_scratch_mkfs_sized $((256 * 1024 * 1024)) >> $seqres.full 2>&1
_scratch_mount || _fail "mount failed"
# This is a test of xattr behavior when we run out of disk space for xattrs,
# so make sure the pwrite goes to the data device and not the rt volume.
test "$FSTYP" = "xfs" && \
_xfs_force_bdev data $SCRATCH_MNT
TFILE=$SCRATCH_MNT/testfile.$seq
# Create the test file and choose its permissions
touch $TFILE
chmod u+rwx $TFILE
chmod go-rwx $TFILE
# Try to run out of space so setfacl will fail
$XFS_IO_PROG -c "pwrite 0 256m" $TFILE >>$seqres.full 2>&1
i=1
# Setting acls on an xfs filesystem will succeed even after running out of
# space for user attributes. Use trusted attributes
while $SETFATTR_PROG -n trusted.$i -v $(perl -e 'print "a"x1024') $TFILE &>/dev/null; do
((++i))
done
j=1
ret=0
while [ $ret -eq 0 ]; do
ret=1
while [ $j -le 1000 ]; do
# On btrfs, setfattr will sometimes fail when free space is
# low, long before it's actually exhausted. Insist until it
# fails consistently.
$SETFATTR_PROG -n trusted.$i"x"$j $TFILE &>/dev/null
ret=$(( $ret && $? ))
((++j))
done
j=1
((++i))
done
if setfacl -m m:r $TFILE &>/dev/null; then
# setfacl succeeded, so the test was meaningless
# The filesystem might still have an issue
_notrun "$FSTYP succeeds in setting acls despite running out of space for user attrs"
fi
# Since setfacl failed, the permissions should not have changed
stat -c %A $TFILE
status=0
exit
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