#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2023 Fujitsu Limited. All Rights Reserved.
#
# FS QA Test No. 568
#
# Tests `xfsrestore -x` which handles an wrong inode in a dump, with the
# multi-level dumps where we hit an issue during development.
# This procedure is cribbed from:
#   xfs/065: Testing incremental dumps and cumulative restores with
#            different operations for each level

. ./common/preamble
_begin_fstest auto dump

# Override the default cleanup function.
_cleanup()
{
	_cleanup_dump
	cd /
	rm -f $tmp.*
}

# Import common functions.
. ./common/filter
. ./common/dump
. ./common/quota

#
# list recursively the directory
#
# e.g. lstat output: src/lstat64 31056 -rwxr-xr-x 38403,0
# Don't print out sizes of directories - which can vary - overwrite with XXX.
#
_list_dir()
{
	__dir=$1
	find $__dir  -exec $here/src/lstat64 -t {} \; |\
	sed -e 's/.*dumpdir/dumpdir/' -e '/^dumpdir /d' |\
	sed -e 's/.*restoredir/restoredir/' -e '/^restoredir /d' |\
	grep -E -v 'housekeeping|dirattr|dirextattr|namreg|state|tree|fakeroot' |\
	awk '$3 ~ /^d/ { $2 = "XXX" } {print}' |\
	LC_COLLATE=POSIX sort
}

# real QA test starts here
_supported_fs xfs
_fixed_by_git_commit xfsdump \
	"XXXXXXXXXXXX xfsrestore: fix rootdir due to xfsdump bulkstat misuse"
_require_xfs_io_command "falloc"
_require_scratch
_require_xfsrestore_xflag

#
# too much hassle to get output matching with quotas turned on
# so don't run it
#
_scratch_mkfs_xfs >> $seqres.full
_qmount_option noquota
_scratch_mount
$here/src/feature -U $SCRATCH_DEV && \
	_notrun "UQuota enabled, test needs controlled xfsdump output"
$here/src/feature -G $SCRATCH_DEV && \
	_notrun "GQuota enabled, test needs controlled xfsdump output"
$here/src/feature -P $SCRATCH_DEV && \
	_notrun "PQuota enabled, test needs controlled xfsdump output"
_scratch_unmount

#
# adding      - touch/echo, mkdir
# deleting    - rm, rmdir
# renaming    - mv
# linking     - ln
# unlinking   - rm
# files and directories
#

# Create a filesystem which contains a fake root inode
inums=($(_scratch_xfs_create_fake_root))
root_inum=${inums[0]}
fake_inum=${inums[1]}

# Remove unnecessary files
find $SCRATCH_MNT -not -inum $fake_inum -type f -delete
# Rename a file root file to the static filename
find $SCRATCH_MNT -inum $fake_inum -exec mv {} $SCRATCH_MNT/fakeroot \;

mkdir -p $dump_dir || _fail "cannot mkdir \"$dump_dir\""
cd $dump_dir

echo "Do the incremental dumps"
i=0
num_dumps=8 # do some extra to ensure nothing changes
while [ $i -le $num_dumps ]; do
	cd $dump_dir
	case $i in
	0)
		# adding
		echo 'add0' >addedfile0
		echo 'add1' >addedfile1
		echo 'add2' >addedfile2
		echo 'add3' >addedfile3
		mkdir addeddir1
		mkdir addeddir2
		mkdir addeddir3
		mkdir addeddir4
		echo 'add4' >addeddir3/addedfile4
		echo 'add5' >addeddir4/addedfile5
		;;
	1)
		# deleting
		rm addedfile2
		rmdir addeddir2
		rm -rf addeddir3
		;;
	2)
		# renaming
		mv addedfile1 addedfile2 # rename to previous existing file
		mv addeddir4/addedfile5 addeddir4/addedfile4
		mv addeddir4 addeddir6
		mv addeddir1 addeddir2 # rename to previous existing dir
		;;
	3)
		# linking
		ln addedfile0 linkfile0
		ln addedfile0 linkfile0_1  # have a 2nd link to file
		ln addedfile2 linkfile2
		ln addeddir6/addedfile4 linkfile64
		;;
	4)
		# unlinking
		rm linkfile0  # remove a link
		rm addedfile2 # remove original link
		rm linkfile64  # remove link
		rm addeddir6/addedfile4 # remove last link
		;;
	5)  # link first - then onto 6)
		rm -rf *
		echo 'add6' >addedfile6
		ln addedfile6 linkfile6_1
		ln addedfile6 linkfile6_2
		ln addedfile6 linkfile6_3
		;;
	6)  # then move the inode that the links point to
			mv addedfile6 addedfile6_mv
		rm linkfile6_1
		rm linkfile6_2
		rm linkfile6_3
		ln addedfile6_mv linkfile6_mv_1
		ln addedfile6_mv linkfile6_mv_2
		ln addedfile6_mv linkfile6_mv_3
		;;
	esac
	cd $here
	sleep 2
	_stable_fs

	echo "Listing of what files we have at level $i:"
	_list_dir $dump_dir	| tee $tmp.ls.$i

	dumpfile=$tmp.df.level$i
	_do_dump_file -f $dumpfile -l $i
	# Set the wrong root inode number to the dump file
	# as problematic xfsdump used to do.
	$here/src/fake-dump-rootino $dumpfile $fake_inum

	let i=$i+1
done

echo "Look at what files are contained in the inc. dump"
i=0
while [ $i -le $num_dumps ]; do
	echo ""
	echo "restoring from df.level$i"
	_do_restore_toc -x -f $tmp.df.level$i | \
		sed -e "s/rootino #${fake_inum}/rootino #FAKENO/g" \
		-e "s/# to ${root_inum}/# to ROOTNO/g"
	let i=$i+1
done

echo "Do the cumulative restores"
_prepare_restore_dir
i=0
while [ $i -le $num_dumps ]; do
	if [ $i -eq 0 ]; then
		# The root inode is fixed at the first restore
		opt='-x'
	else
		opt=
	fi
	echo ""
	echo "restoring from df.level$i"
	_do_restore_file_cum $opt -f $tmp.df.level$i | \
		sed -e "s/rootino #${fake_inum}/rootino #FAKENO/g" \
		-e "s/# to ${root_inum}/# to ROOTNO/g"
	echo "list restore_dir"
	_list_dir $restore_dir | _check_quota_file | tee $tmp.restorals.$i
	let i=$i+1
done

echo ""
echo "Do the ls comparison"
i=0
while [ $i -le $num_dumps ]; do
	echo "Comparing ls of FS with restored FS at level $i"
	diff -s $tmp.ls.$i $tmp.restorals.$i | sed "s#$tmp#TMP#g"
	echo ""
	let i=$i+1
done

# success, all done
status=0
exit