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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Deepa Dinamani.  All Rights Reserved.
#
# FS QA Test 402
#
# Test to verify filesystem timestamps for supported ranges.
#
# Exit status 1: test failed.
# Exit status 0: test passed.
#
. ./common/preamble
_begin_fstest auto quick rw bigtime

# Get standard environment, filters and checks.
. ./common/filter
. ./common/attr

# Prerequisites for the test run.
_supported_fs generic
_require_scratch
_require_check_dmesg
_require_xfs_io_command utimes

# Compare file timestamps obtained from stat
# with a given timestamp.
check_stat()
{
	file=$1
	timestamp=$2

	stat_timestamp=`stat -c"%X;%Y" $file`

	prev_timestamp="$timestamp;$timestamp"
	if [ $prev_timestamp != $stat_timestamp ]; then
		echo "$prev_timestamp != $stat_timestamp" | tee -a $seqres.full
	fi
}

run_test_individual()
{
	file=$1
	timestamp=$2
	update_time=$3

	# check if the time needs update
	if [ $update_time -eq 1 ]; then
		echo "Updating file: $file to timestamp $timestamp"  >> $seqres.full
		rm -f $tmp.utimes
		$XFS_IO_PROG -f -c "utimes $timestamp 0 $timestamp 0" $file > $tmp.utimes 2>&1
		local res=$?

		cat $tmp.utimes >> $seqres.full
		if [ "$timestamp" -ne 0 ] && grep -q "Bad value" "$tmp.utimes"; then
			echo "xfs_io could not interpret time value \"$timestamp\", skipping \"$file\" test." >> $seqres.full
			rm -f $file $tmp.utimes
			return
		fi
		cat $tmp.utimes
		rm -f $tmp.utimes
		if [ $res -ne 0 ]; then
			echo "Failed to update times on $file" | tee -a $seqres.full
		fi
	else
		if [ ! -f "$file" ]; then
			echo "xfs_io did not create file for time value \"$timestamp\", skipping test." >> $seqres.full
			return
		fi
	fi

	tsclamp=$((timestamp<tsmin?tsmin:timestamp>tsmax?tsmax:timestamp))
	echo "Checking file: $file Updated timestamp is $tsclamp"  >> $seqres.full
	check_stat $file $tsclamp
}

run_test()
{
	update_time=$1

	n=1

	for TIME in "${TIMESTAMPS[@]}"; do
		run_test_individual ${SCRATCH_MNT}/test_$n $TIME $update_time
		((n++))
	done
}

_scratch_mkfs &>> $seqres.full 2>&1 || _fail "mkfs failed"
_scratch_mount

_require_timestamp_range $SCRATCH_DEV

read tsmin tsmax <<<$(_filesystem_timestamp_range $SCRATCH_DEV)
echo min supported timestamp $tsmin >> $seqres.full
echo max supported timestamp $tsmax >> $seqres.full

# Test timestamps array

declare -a TIMESTAMPS=(
	$tsmin
	0
	$tsmax
	$((tsmax/2))
	$((tsmax+1))
)

status=0

# Begin test case 1
echo "In memory timestamps update test start" >> $seqres.full

# update time on the file
update_time=1

run_test $update_time

echo "In memory timestamps update complete" >> $seqres.full

echo "Unmounting and mounting scratch $SCRATCH_MNT" >> $seqres.full

# unmount and remount $SCRATCH_DEV
_scratch_cycle_mount

# Begin test case 2

n=1

# Do not update time on the file this time, just read from disk
update_time=0

echo "On disk timestamps update test start" >> $seqres.full

# Re-run test
run_test $update_time

echo "On disk timestamps update test complete" >> $seqres.full

echo Silence is golden
exit