1#!/bin/sh
2# Ensure that several programs work fine, even with stdout initially closed.
3# This is effectively a test of closeout.c's close_stdout function.
4
5# Copyright (C) 2004-2023 Free Software Foundation, Inc.
6
7# This program is free software: you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation, either version 3 of the License, or
10# (at your option) any later version.
11
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15# GNU General Public License for more details.
16
17# You should have received a copy of the GNU General Public License
18# along with this program.  If not, see <https://www.gnu.org/licenses/>.
19
20. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
21print_ver_ rm
22
23p=$abs_top_builddir
24
25
26# Ensure these exit successfully, even though stdout is closed,
27# because they generate no output.
28touch a
29cp a b >&- || fail=1
30test -f b || fail=1
31chmod o-w . >&- || fail=1
32ln a c >&- || fail=1
33rm c >&- || fail=1
34mkdir d >&- || fail=1
35mv d e >&- || fail=1
36rmdir e >&- || fail=1
37touch e >&- || fail=1
38sleep 0 >&- || fail=1
39"$p/src/true" >&- || fail=1
40"$p/src/printf" '' >&- || fail=1
41
42# If >&- works, ensure these fail, because stdout is closed and they
43# *do* generate output.  >&- apparently does not work in HP-UX 11.23.
44# This test is ineffective unless /dev/stdout also works.
45if "$p/src/test" -w /dev/stdout >/dev/null &&
46   "$p/src/test" ! -w /dev/stdout >&-; then
47  returns_ 1 "$p/src/printf" 'foo' >&- 2>/dev/null || fail=1
48  returns_ 1 cp --verbose a b >&- 2>/dev/null || fail=1
49  rm -Rf tmpfile-?????? || fail=1
50  returns_ 1 mktemp tmpfile-XXXXXX >&- 2>/dev/null || fail=1
51  returns_ 1 mktemp tmpfile-XXXXXX -q >&- 2>/dev/null || fail=1
52  case $(echo tmpfile-??????) in 'tmpfile-??????') ;; *) fail=1 ;; esac
53fi
54
55# Likewise for /dev/full, if /dev/full works.
56if test -w /dev/full && test -c /dev/full; then
57  returns_ 1 "$p/src/printf" 'foo' >/dev/full 2>/dev/null || fail=1
58  returns_ 1 cp --verbose a b >/dev/full 2>/dev/null || fail=1
59  rm -Rf tmpdir-?????? || fail=1
60  returns_ 1 mktemp -d tmpdir-XXXXXX >/dev/full 2>/dev/null || fail=1
61  returns_ 1 mktemp -d -q tmpdir-XXXXXX >/dev/full 2>/dev/null || fail=1
62  case $(echo tmpfile-??????) in 'tmpfile-??????') ;; *) fail=1 ;; esac
63fi
64
65Exit $fail
66