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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2014 SGI. All Rights Reserved.
#
# FS QA Test No. 001
#
# Test the xfs_db write of the XFS BMBT entries. For each XFS BMBT field,
# write the value 0, each bit and finally the entry beyond the maximum legal
# value. Also makes sure a core write and hex input still work.
#
. ./common/preamble
_begin_fstest db auto quick
_do_bit_test()
{
field="$1"
bits="$2"
echo "testing $field with $bits bits"
_scratch_xfs_db -x -c "inode $FILE_INO" -c "write $field 0"
num=1
for n in `seq 0 1 $bits`; do
_scratch_xfs_db -x -c "inode $FILE_INO" \
-c "write $field $num"
let num=$num*2
done
echo
}
# Import common functions.
. ./common/filter
# real QA test starts here
# Modify as appropriate.
_supported_fs xfs
_require_scratch_nocheck
_scratch_mkfs >/dev/null 2>&1
_scratch_mount
# create the test file
echo "make a file with data so it has an extent" > $SCRATCH_MNT/file
# find the inode for the test file
FILE_INO=`ls -i $SCRATCH_MNT |awk '{print $1}'`
_scratch_unmount
# test bit length constants
BMBT_EXNTFLAG_BITLEN=1
BMBT_STARTOFF_BITLEN=54
BMBT_STARTBLOCK_BITLEN=52
BMBT_BLOCKCOUNT_BITLEN=21
prefix=$(_scratch_get_bmx_prefix $FILE_INO)
test -n "$prefix" || _fail "could not find bmx prefix from inode $FILE_INO"
filter_output() {
sed -e "s/${prefix}/u.bmx/g"
}
# test setting the BMBT entries from 0 to past the valid number.
_do_bit_test "${prefix}[0].extentflag" $BMBT_EXNTFLAG_BITLEN | filter_output
_do_bit_test "${prefix}[0].startoff" $BMBT_STARTOFF_BITLEN | filter_output
_do_bit_test "${prefix}[0].startblock" $BMBT_STARTBLOCK_BITLEN | filter_output
_do_bit_test "${prefix}[0].blockcount" $BMBT_BLOCKCOUNT_BITLEN | filter_output
# test setting the 32 bit generation number
_scratch_xfs_db -x -c "inode $FILE_INO" -c "write core.gen 0x5a"
_scratch_xfs_db -x -c "inode $FILE_INO" -c "write core.gen 0xa5"
_scratch_xfs_db -x -c "inode $FILE_INO" -c "write core.gen 0"
_scratch_xfs_db -x -c "inode $FILE_INO" -c "write core.gen #5a5a"
_scratch_xfs_db -x -c "inode $FILE_INO" -c "write core.gen #a5a5"
status=0
exit
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