| #!/bin/bash |
| |
| # |
| # Copyright (C) 2007 Karel Zak <kzak@redhat.com> |
| # |
| # 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. |
| # |
| |
| # |
| # The /etc/mtab file should not be modified if RLIMIT_FSIZE (ulimit -f) |
| # is too low, otherwise the file could be corrupted (incomplete write). |
| # The [u]mount(8) has to block SIGXFSZ and check if all writes and fflush |
| # calls are successful. |
| # |
| |
| TS_TOPDIR="${0%/*}/../.." |
| TS_DESC="rlimit-fsize" |
| |
| . $TS_TOPDIR/functions.sh |
| ts_init "$*" |
| |
| ts_check_test_command "$TS_CMD_MOUNT" |
| ts_check_test_command "$TS_CMD_UMOUNT" |
| ts_check_test_command "$TS_HELPER_MD5" |
| |
| ts_skip_nonroot |
| ts_check_losetup |
| ts_check_prog "mkfs.ext3" |
| |
| has_mtab=$( ts_has_mtab_support ) |
| [ "$has_mtab" == "yes" ] || ts_skip "mtab unsupported" |
| |
| [ -L /etc/mtab ] && ts_skip "mtab is symlink" |
| [ "$(stat --format '%s' /etc/mtab)" -gt "1024" ] || ts_skip "mtab is too small" |
| |
| function mtab_checksum() |
| { |
| "$TS_HELPER_MD5" < /etc/mtab |
| } |
| |
| ts_device_init |
| DEVICE=$TS_LODEV |
| |
| mkfs.ext3 $DEVICE &> /dev/null || ts_die "Cannot make ext3 on $DEVICE" |
| |
| |
| ts_init_subtest "mount" |
| OLD_SUM=$(mtab_checksum) |
| [ -d "$TS_MOUNTPOINT" ] || mkdir -p $TS_MOUNTPOINT |
| ( |
| ulimit -f 1 |
| $TS_CMD_MOUNT $DEVICE $TS_MOUNTPOINT |
| ) &> /dev/null |
| NEW_SUM=$(mtab_checksum) |
| [ $NEW_SUM = $OLD_SUM ] && echo "OK: mtab unmodified by mount" >> $TS_OUTPUT |
| ts_is_mounted $DEVICE || ts_die "Cannot find $DEVICE in /proc/mounts" |
| $TS_CMD_UMOUNT $TS_MOUNTPOINT &> /dev/null |
| ts_is_mounted $DEVICE && ts_die "$DEVICE is still mounted" |
| ts_finalize_subtest |
| |
| |
| ts_init_subtest "umount" |
| [ -d "$TS_MOUNTPOINT" ] || mkdir -p $TS_MOUNTPOINT |
| $TS_CMD_MOUNT $DEVICE $TS_MOUNTPOINT &> /dev/null |
| ts_is_mounted $DEVICE || ts_die "Cannot find $DEVICE in /proc/mounts" |
| OLD_SUM=$(mtab_checksum) |
| ( |
| ulimit -f 1 |
| $TS_CMD_UMOUNT $TS_MOUNTPOINT &> /dev/null |
| ) &> /dev/null |
| NEW_SUM=$(mtab_checksum) |
| [ $NEW_SUM = $OLD_SUM ] && echo "OK: mtab unmodified by umount" >> $TS_OUTPUT |
| if ts_is_mounted $DEVICE; then |
| echo "FAIL: $DEVICE is still mounted" >> $TS_OUTPUT |
| $TS_CMD_UMOUNT $TS_MOUNTPOINT &> /dev/null |
| else |
| # repair /etc/mtab |
| $TS_CMD_UMOUNT --fake $TS_MOUNTPOINT &> /dev/null |
| fi |
| ts_finalize_subtest |
| |
| ts_log "Success" |
| ts_finalize |