91 lines
2.8 KiB
Bash
Executable file
91 lines
2.8 KiB
Bash
Executable file
#!/bin/sh
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# Verify the operations done by shred
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# Copyright (C) 2009-2025 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ shred
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# shred a single letter, which should result in
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# 3 random passes and a single rename.
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printf 1 > f || framework_failure_
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echo "\
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shred: f: pass 1/3 (random)...
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shred: f: pass 2/3 (random)...
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shred: f: pass 3/3 (random)...
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shred: f: removing
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shred: f: renamed to 0
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shred: f: removed" > exp || framework_failure_
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shred -v -u f 2>out || fail=1
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compare exp out || fail=1
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# Likewise but for a zero length file
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# to bypass the data passes
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touch f || framework_failure_
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echo "\
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shred: f: removing
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shred: f: renamed to 0
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shred: f: removed" > exp || framework_failure_
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shred -v -u f 2>out || fail=1
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compare exp out || fail=1
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# shred data 20 times and verify the passes used.
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# This would consume all random data between 5.93 and 8.24 inclusive.
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dd bs=100K count=1 if=/dev/zero | tr '\0' 'U' > Us || framework_failure_
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printf 1 > f || framework_failure_
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echo "\
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shred: f: pass 1/20 (random)...
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shred: f: pass 2/20 (ffffff)...
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shred: f: pass 3/20 (924924)...
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shred: f: pass 4/20 (888888)...
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shred: f: pass 5/20 (db6db6)...
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shred: f: pass 6/20 (777777)...
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shred: f: pass 7/20 (492492)...
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shred: f: pass 8/20 (bbbbbb)...
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shred: f: pass 9/20 (555555)...
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shred: f: pass 10/20 (aaaaaa)...
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shred: f: pass 11/20 (random)...
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shred: f: pass 12/20 (6db6db)...
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shred: f: pass 13/20 (249249)...
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shred: f: pass 14/20 (999999)...
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shred: f: pass 15/20 (111111)...
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shred: f: pass 16/20 (000000)...
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shred: f: pass 17/20 (b6db6d)...
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shred: f: pass 18/20 (eeeeee)...
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shred: f: pass 19/20 (333333)...
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shred: f: pass 20/20 (random)...
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shred: f: removing
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shred: f: renamed to 0
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shred: f: removed" > exp || framework_failure_
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shred -v -u -n20 -s4096 --random-source=Us f 2>out || fail=1
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compare exp out || fail=1
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# Trigger an issue in shred before v8.27 where single
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# bytes in the pattern space were not initialized correctly
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# for particular sizes, like 7,13,...
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# This failed under both valgrind and ASAN.
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for size in 1 2 6 7 8; do
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touch shred.pattern.umr.size
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shred -n4 -s$size shred.pattern.umr.size || fail=1
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done
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Exit $fail
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