tests: add test for RLIMIT_FSIZE issue

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/tests/expected/mount/rlimit b/tests/expected/mount/rlimit
new file mode 100644 (file)
index 0000000..3582111
--- /dev/null
+++ b/tests/expected/mount/rlimit
@@ -0,0 +1 @@
+Success

diff --git a/tests/expected/mount/rlimit-mount b/tests/expected/mount/rlimit-mount
new file mode 100644 (file)
index 0000000..85e2e12
--- /dev/null
+++ b/tests/expected/mount/rlimit-mount
@@ -0,0 +1 @@
+OK: mtab unmodified by mount

diff --git a/tests/expected/mount/rlimit-umount b/tests/expected/mount/rlimit-umount
new file mode 100644 (file)
index 0000000..193a8ee
--- /dev/null
+++ b/tests/expected/mount/rlimit-umount
@@ -0,0 +1 @@
+OK: mtab unmodified by umount

diff --git a/tests/ts/mount/rlimit b/tests/ts/mount/rlimit
new file mode 100755 (executable)
index 0000000..7d7e42b
--- /dev/null
+++ b/tests/ts/mount/rlimit
@@ -0,0 +1,78 @@
+#!/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="$(dirname $0)/../.."
+TS_DESC="rlimit-fsize"
+
+. $TS_TOPDIR/functions.sh
+ts_init "$*"
+ts_skip_nonroot
+
+[ -L /etc/mtab ] && ts_skip "mtab is symlink"
+[ "$(stat --format '%s' /etc/mtab)" -gt "1024" ] || ts_skip "mtab is too small"
+
+set -o pipefail
+
+function mtab_checksum()
+{
+       md5sum /etc/mtab | awk '{printf $1}'
+}
+
+DEVICE=$(ts_device_init)
+[ "$?" == 0 ] || ts_die "Cannot init device"
+
+mkfs.ext3 $DEVICE &> /dev/null || ts_die "Cannot make ext3 on $DEVICE" $DEVICE
+
+
+ts_init_subtest "mount"
+OLD_SUM=$(mtab_checksum)
+[ -d "$TS_MOUNTPOINT" ] || mkdir -p $TS_MOUNTPOINT
+(
+       ulimit -f 1
+       $TS_CMD_MOUNT $DEVICE $TS_MOUNTPOINT
+) &> /dev/null
+NEW_SUM=$(mtab_checksum)
+$TS_CMD_UMOUNT $TS_MOUNTPOINT &> /dev/null
+[ $NEW_SUM = $OLD_SUM ] && echo "OK: mtab unmodified by mount" >> $TS_OUTPUT
+ts_finalize_subtest
+
+
+ts_init_subtest "umount"
+[ -d "$TS_MOUNTPOINT" ] || mkdir -p $TS_MOUNTPOINT
+$TS_CMD_MOUNT $DEVICE $TS_MOUNTPOINT &> /dev/null
+OLD_SUM=$(mtab_checksum)
+(
+       ulimit -f 1
+       $TS_CMD_UMOUNT $TS_MOUNTPOINT &> /dev/null
+) &> /dev/null
+NEW_SUM=$(mtab_checksum)
+$TS_CMD_UMOUNT $TS_MOUNTPOINT &> /dev/null
+[ $NEW_SUM = $OLD_SUM ] && echo "OK: mtab unmodified by umount" >> $TS_OUTPUT
+ts_finalize_subtest
+
+
+ts_device_deinit $DEVICE
+ts_log "Success"
+ts_finalize