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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2022 Google, Inc. All Rights Reserved.
#
# Test the set/get UUID ioctl.
#
. ./common/preamble
_begin_fstest auto ioctl
# Override the default cleanup function.
_cleanup()
{
cd /
rm -r -f $tmp.*
kill -9 $fsstress_pid 2>/dev/null;
wait > /dev/null 2>&1
}
# Import common functions.
. ./common/filter
# real QA test starts here
_supported_fs ext4
_require_scratch
_require_test_program uuid_ioctl
_require_command $UUIDGEN_PROG uuidgen
UUID_IOCTL=$here/src/uuid_ioctl
# If the ioctl is not supported by the kernel, then skip test.
current_uuid=$($UUID_IOCTL get $SCRATCH_MNT 2>&1)
if [[ "$current_uuid" =~ ^Inappropriate[[:space:]]ioctl ]]; then
_notrun "UUID ioctls are not supported by kernel."
fi
# metadata_csum_seed must be set to decouple checksums from the uuid.
# Otherwise, checksums need to be recomputed when the uuid changes, which
# is not supported by the ioctl.
_scratch_mkfs_ext4 -O metadata_csum_seed >> $seqres.full 2>&1
_scratch_mount
# Begin fsstress while modifying UUID
fsstress_args=$(_scale_fsstress_args -d $SCRATCH_MNT -p 15 -n 999999)
$FSSTRESS_PROG $fsstress_args >> $seqres.full &
fsstress_pid=$!
for n in $(seq 1 20); do
new_uuid=$($UUIDGEN_PROG)
echo "Setting UUID to ${new_uuid}" >> $seqres.full 2>&1
$UUID_IOCTL set $SCRATCH_MNT $new_uuid
current_uuid=$($UUID_IOCTL get $SCRATCH_MNT)
echo "$UUID_IOCTL get $SCARTCH_MNT: $current_uuid" >> $seqres.full 2>&1
if [[ "$current_uuid" != "$new_uuid" ]]; then
echo "Current UUID ($current_uuid) does not equal what was sent with the ioctl ($new_uuid)"
fi
done
# success, all done
echo "Silence is golden"
status=0
exit
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