summaryrefslogtreecommitdiffstats
path: root/tests/misc/shred-passes.sh
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 17:39:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 17:39:29 +0000
commit8ffec2a3aba6f114784e11f89ef1d57a096ae540 (patch)
treeccebcbad06203e8241a8e7249f8e6c478a3682ea /tests/misc/shred-passes.sh
parentInitial commit. (diff)
downloadcoreutils-upstream.tar.xz
coreutils-upstream.zip
Adding upstream version 8.32.upstream/8.32upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/misc/shred-passes.sh')
-rwxr-xr-xtests/misc/shred-passes.sh91
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..58b6532
--- /dev/null
+++ b/tests/misc/shred-passes.sh
@@ -0,0 +1,91 @@
+#!/bin/sh
+# Verify the operations done by shred
+
+# Copyright (C) 2009-2020 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