diff options
Diffstat (limited to 'tests/dd/skip-seek-past-dev.sh')
-rwxr-xr-x | tests/dd/skip-seek-past-dev.sh | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/tests/dd/skip-seek-past-dev.sh b/tests/dd/skip-seek-past-dev.sh new file mode 100755 index 000000000..f4184b1bf --- /dev/null +++ b/tests/dd/skip-seek-past-dev.sh @@ -0,0 +1,58 @@ +#!/bin/sh +# test diagnostics are printed immediately when seeking beyond device. + +# Copyright (C) 2008-2012 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_ ../src +print_ver_ dd + +# need write access to local device +# (even though we don't actually write anything) +require_root_ +require_local_dir_ + +get_device_size() { + BLOCKDEV=blockdev + $BLOCKDEV -V >/dev/null 2>&1 || BLOCKDEV=/sbin/blockdev + $BLOCKDEV --getsize64 "$1" +} + + +# Get path to device the current dir is on. +# Note df can only get fs size, not device size. +device=$(df -P . | tail -n1 | cut -d' ' -f1) || framework_failure_ + +dev_size=$(get_device_size "$device") || + skip_ "failed to determine size of $device" + +# Don't use shell arithmetic as older versions of dash use longs +DEV_OFLOW=$(expr $dev_size + 1) + +timeout 10 dd bs=1 skip=$DEV_OFLOW count=0 status=noxfer < "$device" 2> err +test "$?" = "1" || fail=1 +echo "dd: 'standard input': cannot skip: Invalid argument +0+0 records in +0+0 records out" > err_ok || framework_failure_ +compare err_ok err || fail=1 + +timeout 10 dd bs=1 seek=$DEV_OFLOW count=0 status=noxfer > "$device" 2> err +test "$?" = "1" || fail=1 +echo "dd: 'standard output': cannot seek: Invalid argument +0+0 records in +0+0 records out" > err_ok || framework_failure_ +compare err_ok err || fail=1 + +Exit $fail |