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In the listxattrs handler, we were not listing all the xattrs that are
packed in the same btree item, which happens when multiple xattrs have
a name that when crc32c hashed produce the same checksum value.
Fix this by processing them all.
The following test case for xfstests reproduces the issue:
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"
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
. ./common/attr
# real QA test starts here
_supported_fs generic
_supported_os Linux
_require_scratch
_require_attrs
rm -f $seqres.full
_scratch_mkfs >>$seqres.full 2>&1
_scratch_mount
# Create our test file with a few xattrs. The first 3 xattrs have a name
# that when given as input to a crc32c function result in the same checksum.
# This made btrfs list only one of the xattrs through listxattrs system call
# (because it packs xattrs with the same name checksum into the same btree
# item).
touch $SCRATCH_MNT/testfile
$SETFATTR_PROG -n user.foobar -v 123 $SCRATCH_MNT/testfile
$SETFATTR_PROG -n user.WvG1c1Td -v qwerty $SCRATCH_MNT/testfile
$SETFATTR_PROG -n user.J3__T_Km3dVsW_ -v hello $SCRATCH_MNT/testfile
$SETFATTR_PROG -n user.something -v pizza $SCRATCH_MNT/testfile
$SETFATTR_PROG -n user.ping -v pong $SCRATCH_MNT/testfile
# Now call getfattr with --dump, which calls the listxattrs system call.
# It should list all the xattrs we have set before.
$GETFATTR_PROG --absolute-names --dump $SCRATCH_MNT/testfile | _filter_scratch
status=0
exit
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
daac7ba61a