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Diffstat (limited to 'tests/t4100-msdos-partition-limits.sh')
| -rwxr-xr-x | tests/t4100-msdos-partition-limits.sh | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/tests/t4100-msdos-partition-limits.sh b/tests/t4100-msdos-partition-limits.sh new file mode 100755 index 0000000..2bebfb9 --- /dev/null +++ b/tests/t4100-msdos-partition-limits.sh @@ -0,0 +1,152 @@ +#!/bin/sh +# enforce limits on partition start sector and length + +# Copyright (C) 2008-2014, 2019-2023 Free Software Foundation, Inc. + +# This program 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 3 of the License, or +# (at your option) any later version. + +# This program 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. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +. "${srcdir=.}/init.sh"; path_prepend_ ../parted +require_root_ +require_xfs_ +ss=$sector_size_ + +# On a 32-bit system, we must skip this test when $ss >= 4096. +# Otherwise, due to an inherent 32-bit-XFS limit, dd would fail to +# create the file of size > 16TiB +if test $(uname -m) != x86_64; then + test $ss -le 2048 || skip_ 'this test works only on a 64-bit system' +fi + +#################################################### +# Create and mount a file system capable of dealing with >=2TB files. +# We must be able to create a file with an apparent length of 2TB or larger. +# It needn't be a large file system. +fs=fs_file +mp=`pwd`/mount-point +n=4096 + +# create an XFS file system +mkfs.xfs -dfile,name=$fs,size=300m || fail=1 +mkdir "$mp" || fail=1 + +# Unmount upon interrupt, failure, etc., as well as upon normal completion. +cleanup_fn_() { cd "$test_dir_" && umount "$mp" > /dev/null 2>&1; } + +# mount it +mount -o loop $fs "$mp" || fail=1 +cd "$mp" || fail=1 + +dev=loop-file + +do_mkpart() +{ + set +x # Turn off tracing; otherwise, we pollute stderr. + start_sector=$1 + end_sector=$2 + # echo '********' $(echo $end_sector - $start_sector + 1 |bc) + dd if=/dev/zero of=$dev bs=$ss count=2k seek=$end_sector 2> dd-err || + { cat dd-err 1>&2; return 1; } + parted -s $dev mklabel $table_type && + parted -s $dev mkpart p xfs ${start_sector}s ${end_sector}s +} + +# Specify the starting sector number and length in sectors, +# rather than start and end. +do_mkpart_start_and_len() +{ + set +x # Turn off tracing; otherwise, we pollute stderr. + start_sector=$1 + len=$2 + end_sector=$(echo $start_sector + $len - 1|bc) + do_mkpart $start_sector $end_sector +} + +for table_type in msdos; do + +# a partition length of 2^32-1 works. +end=$(echo $n+2^32-2|bc) || fail=1 +do_mkpart $n $end || fail=1 + +# print the result +parted -s $dev unit s p > out 2>&1 || fail=1 +sed -n "/^ *1 *$n/s/ */ /gp" out|sed "s/ *\$//" > k && mv k out || fail=1 +echo " 1 ${n}s ${end}s 4294967295s primary" > exp || fail=1 +compare exp out || fail=1 + +# a partition length of exactly 2^32 sectors provokes failure. +do_mkpart $n $(echo $n+2^32-1|bc) > err 2>&1 +test $? = 1 || fail=1 + +bad_part_length() +{ echo "Error: partition length of $1 sectors exceeds the"\ + "$table_type-partition-table-imposed maximum of 4294967295"; } + +# check for new diagnostic +bad_part_length 4294967296 > exp || fail=1 +compare exp err || fail=1 + +# a partition length of 2^32+1 sectors must provoke failure. +do_mkpart $n $(echo $n+2^32|bc) > err 2>&1 +test $? = 1 || fail=1 + +# check for new diagnostic +bad_part_length 4294967297 > exp || fail=1 +compare exp err || fail=1 + +# ========================================================= +# Now consider partition starting sector numbers. +bad_start_sector() +{ echo "Error: starting sector number, $1 exceeds the"\ + "$table_type-partition-table-imposed maximum of 4294967295"; } + +# a partition start sector number of 2^32-1 works. +do_mkpart_start_and_len $(echo 2^32-1|bc) 1000 || fail=1 + +cat > exp <<EOF +Model: (file) +Disk $dev: 4294970342s +Sector size (logical/physical): ${ss}B/${ss}B +Partition Table: $table_type +Disk Flags: + +Number Start End Size Type File system Flags + 1 4294967295s 4294968294s 1000s primary + +EOF + +# print the result +parted -s $dev unit s p > out 2>&1 || fail=1 +sed "s/^Disk .*\($dev: [0-9][0-9]*s\)$/Disk \1/;s/ *$//" out > k \ + && mv k out || fail=1 +compare exp out || fail=1 + +# a partition start sector number of 2^32 must fail +do_mkpart_start_and_len $(echo 2^32|bc) 1000 > err 2>&1 +test $? = 1 || fail=1 + +# check for new diagnostic +bad_start_sector 4294967296 > exp || fail=1 +compare exp err || fail=1 + +# a partition start sector number of 2^32+1 must fail, too. +do_mkpart_start_and_len $(echo 2^32+1|bc) 1000 > err 2>&1 +test $? = 1 || fail=1 + +# check for new diagnostic +bad_start_sector 4294967297 > exp || fail=1 +compare exp err || fail=1 + +done + +Exit $fail |