1#!/bin/sh
2# Ensure that cp copies contents of non-empty "regular" file with st_size==0
3
4# Copyright (C) 2007-2023 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_ cp
21
22touch empty || framework_failure_
23
24f=/proc/cpuinfo
25test -r $f || f=empty
26
27cat $f > out || fail=1
28
29# With coreutils-6.9, this would create a zero-length "exp" file.
30# Skip this test on architectures like aarch64 where the inode
31# number of the file changed during the cp run.
32cp $f exp 2>err \
33  || { fail=1;
34       grep 'replaced while being copied' err \
35         && skip_ "File $f is being replaced while being copied"; }
36
37# Don't simply compare contents; they might differ,
38# e.g., if CPU freq changes between cat and cp invocations.
39# Instead, simply compare whether they're both nonempty.
40test -s out \
41  && { rm -f out; echo nonempty > out; }
42test -s exp \
43  && { rm -f exp; echo nonempty > exp; }
44
45compare exp out || fail=1
46
47Exit $fail
48