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Diffstat (limited to 'tests/misc/shred-passes.sh')
| -rwxr-xr-x | tests/misc/shred-passes.sh | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/tests/misc/shred-passes.sh b/tests/misc/shred-passes.sh new file mode 100755 index 0000000..46ab924 --- /dev/null +++ b/tests/misc/shred-passes.sh @@ -0,0 +1,91 @@ +#!/bin/sh +# Verify the operations done by shred + +# Copyright (C) 2009-2018 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 + + +# shred a single letter, which should result in +# 3 random passes and a single rename. +printf 1 > f || framework_failure_ +echo "\ +shred: f: pass 1/3 (random)... +shred: f: pass 2/3 (random)... +shred: f: pass 3/3 (random)... +shred: f: removing +shred: f: renamed to 0 +shred: f: removed" > exp || framework_failure_ + +shred -v -u f 2>out || fail=1 +compare exp out || fail=1 + + +# Likewise but for a zero length file +# to bypass the data passes +touch f || framework_failure_ +echo "\ +shred: f: removing +shred: f: renamed to 0 +shred: f: removed" > exp || framework_failure_ + +shred -v -u f 2>out || fail=1 +compare exp out || fail=1 + + +# shred data 20 times and verify the passes used. +# This would consume all random data between 5.93 and 8.24 inclusive. +dd bs=100K count=1 if=/dev/zero | tr '\0' 'U' > Us || framework_failure_ +printf 1 > f || framework_failure_ +echo "\ +shred: f: pass 1/20 (random)... +shred: f: pass 2/20 (ffffff)... +shred: f: pass 3/20 (924924)... +shred: f: pass 4/20 (888888)... +shred: f: pass 5/20 (db6db6)... +shred: f: pass 6/20 (777777)... +shred: f: pass 7/20 (492492)... +shred: f: pass 8/20 (bbbbbb)... +shred: f: pass 9/20 (555555)... +shred: f: pass 10/20 (aaaaaa)... +shred: f: pass 11/20 (random)... +shred: f: pass 12/20 (6db6db)... +shred: f: pass 13/20 (249249)... +shred: f: pass 14/20 (999999)... +shred: f: pass 15/20 (111111)... +shred: f: pass 16/20 (000000)... +shred: f: pass 17/20 (b6db6d)... +shred: f: pass 18/20 (eeeeee)... +shred: f: pass 19/20 (333333)... +shred: f: pass 20/20 (random)... +shred: f: removing +shred: f: renamed to 0 +shred: f: removed" > exp || framework_failure_ + +shred -v -u -n20 -s4096 --random-source=Us f 2>out || fail=1 +compare exp out || fail=1 + +# Trigger an issue in shred before v8.27 where single +# bytes in the pattern space were not initialized correctly +# for particular sizes, like 7,13,... +# This failed under both valgrind and ASAN. +for size in 1 2 6 7 8; do + touch shred.pattern.umr.size + shred -n4 -s$size shred.pattern.umr.size || fail=1 +done + +Exit $fail |