1#!/bin/sh
2# exercise cp's short-read failure when operating on >4KB files in /proc
3
4# Copyright (C) 2009-2023 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
22proc_large=/proc/cpuinfo  # usually > 4KiB
23
24test -r $proc_large || skip_ "your system lacks $proc_large"
25
26# Before coreutils-7.3, cp would copy less than 4KiB of this file.
27# Skip this test when run under QEmu emulation where emulated /proc files
28# have unstable inode numbers.
29cp $proc_large 1 2>err \
30  || { fail=1
31       grep 'replaced while being copied' err \
32         && skip_ "File $proc_large is being replaced while being copied"; }
33
34cat $proc_large > 2 || fail=1
35
36# adjust varying parts
37del_varying='/MHz/d; /[Bb][Oo][Gg][Oo][Mm][Ii][Pp][Ss]/d;'
38sed "$del_varying" 1 > proc.cp || framework_failure_
39sed "$del_varying" 2 > proc.cat || framework_failure_
40
41compare proc.cp proc.cat || fail=1
42
43Exit $fail
44