#!/bin/sh
# Test functionality of --exact
# Copyright (C) 2000-2018 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 <https://www.gnu.org/licenses/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ shred
# make sure that neither --exact nor --zero gobbles a command line argument
for opt in --exact --zero; do
echo a > a || framework_failure_
echo bb > b || framework_failure_
echo ccc > c || framework_failure_
shred --remove $opt a b || fail=1
test -f a && fail=1
test -f b && fail=1
shred --remove $opt c || fail=1
test -f c && fail=1
done
# make sure direct I/O is handled appropriately at end of file
# Create a 1MiB file as we'll probably not be using blocks larger than that
# (i.e., we want to test failed writes not at the start).
truncate -s1MiB file.slop || framework_failure_
truncate -s+1 file.slop || framework_failure_
shred --exact -n2 file.slop || fail=1
# make sure direct I/O is handled appropriately at start of file
truncate -s1 file.slop || framework_failure_
shred --exact -n2 file.slop || fail=1
Exit $fail