1#!/bin/sh
2# Exercise shred --remove
3
4# Copyright (C) 1999-2023 Free Software Foundation, Inc.
5
6# This program is free software: you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation, either version 3 of the License, or
9# (at your option) any later version.
10
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14# GNU General Public License for more details.
15
16# You should have received a copy of the GNU General Public License
17# along with this program.  If not, see <https://www.gnu.org/licenses/>.
18
19. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
20print_ver_ shred
21skip_if_root_
22
23# The length of the basename is what matters.
24# In this case, shred-4.0l would try to rename the file 256^10 times
25# before terminating.
26file=0123456789
27touch $file || framework_failure_
28chmod u-w $file || framework_failure_
29
30# This would take so long that it appears to infloop
31# when using version from fileutils-4.0k.
32# When the command completes, expect it to fail.
33returns_ 1 shred -u $file > /dev/null 2>&1 || fail=1
34rm -f $file || framework_failure_
35
36# Ensure all --remove methods at least unlink the file
37for mode in '' '=unlink' '=wipe' '=wipesync'; do
38  touch $file || framework_failure_
39  shred -n0 --remove"$mode" $file || fail=1
40  test -e $file && fail=1
41done
42
43# Ensure incorrect params are diagnosed
44touch $file || framework_failure_
45returns_ 1 shred -n0 --remove=none $file 2>/dev/null || fail=1
46
47# Ensure rename passes complete.
48# coreutils-8.28 did not do the decreasing length rename
49# which may have leaked the length of the removed file name
50 # test level exhaustion
51touch \
52 0 1 2 3 4 5 6 7 8 9 \
53 a b c d e f g h i j k l m n o p q r s t u v w x y z \
54 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z _ || framework_failure_
55touch test 000 || framework_failure_  # test level increment
56shred -vu test 2>out || fail=1
57cat <<\EOF >exp || framework_failure_
58shred: test: removing
59shred: test: renamed to 0000
60shred: 0000: renamed to 001
61shred: 001: renamed to 00
62shred: test: removed
63EOF
64compare exp out || fail=1
65
66# Ensure renames are only retried for EEXIST
67mkdir rodir && cd rodir && touch $file && chmod a-w . || framework_failure_
68returns_ 1 timeout 10 shred -u $file || fail=1
69
70Exit $fail
71