tests/ts/fallocate/insert-range - master - niceSOFT/util-linux

tests/ts/fallocate/insert-range
74 строки2 KB
Christian Goeschel Ndjomouo
tests: (fallocate) add --punch-hole test
05 май 2026, 16:53
05 май 2026, 16:53afa72df
#!/usr/bin/env bash

# This file is part of util-linux.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This file is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# Copyright (C) 2026 Christian Goeschel Ndjomouo <cgoesc2@wgu.edu>

TS_TOPDIR="${0%/*}/../.."
TS_DESC="insert-range"

. "$TS_TOPDIR"/functions.sh
ts_init "$*"

ts_check_test_command "$TS_CMD_FALLOCATE"
ts_check_test_command "$TS_CMD_HEXDUMP"
ts_check_test_command "$TS_CMD_FINDMNT"
ts_check_prog "stat"

fstype="$("$TS_CMD_FINDMNT" -o FSTYPE --noheadings --target "$TS_OUTDIR")"
if [[ ! "$fstype" =~ (xfs|ext4) ]]; then
    ts_skip "unsupported file system type $fstype"
fi

TEST_FILE="${TS_OUTDIR}/${TS_TESTNAME}.data"
# We have to properly align the different data blocks
# to the logical filesystem block size otherwise fallocate
# will fail with EINVAL.
BLKSIZE="$(stat --file-system --format=%s "$TS_OUTDIR")"

# The two patterns are used to create distinct data blocks of size $BLKSIZE
# and will help to verify the data block shift.
#
# Our test file's data block patterns will look like this:
#
#           bs bytes   bs bytes
#       |aaaaaaaa...|ffffffff...|
# insert here ------^
# 
# to obtain this
#   bs bytes    bs bytes    bs bytes
# |aaaaaaaa...|00000000...|ffffffff...|
#
{
    printf '%*s' "$BLKSIZE" '' | tr ' ' '\252'
    printf '%*s' "$BLKSIZE" '' | tr ' ' '\377'
} >"$TEST_FILE"

# After this command the block with 'ff' should be shifted
# $BLKSIZE 
"$TS_CMD_FALLOCATE" --insert-range --offset "$BLKSIZE" --length "$BLKSIZE" \
        "$TEST_FILE" >>"$TS_OUTPUT" 2>>"$TS_ERRLOG"

size_after="$(stat --format=%s "$TEST_FILE")"

if (( size_after != (BLKSIZE * 3) )); then
    rm -f "$TEST_FILE"
    ts_failed "file not properly resized (size: $size_after, block size: $BLKSIZE)"
fi

"$TS_CMD_HEXDUMP" --canonical "$TEST_FILE" | sed -e 's/^[[:alnum:]]*[[:space:]]*//g' \
        >>"$TS_OUTPUT" 2>>"$TS_ERRLOG"

rm -f "$TEST_FILE"

ts_finalize