1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
#!/bin/sh
# Test "nice".
# Copyright (C) 2002-2026 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_ nice
getlimits_
tests='
0 empty 10
1 -1 1
2 -12 12
3 -1:-2 2
4 -n:1 1
5 -n:1:-2 2
6 -n:1:-+12 12
7 -2:-n:1 1
8 -2:-n:12 12
9 -+1 1
10 -+12 12
11 -+1:-+12 12
12 -n:+1 1
13 --1:-2 2
14 --1:-2:-13 13
15 --1:-n:2 2
16 --1:-n:2:-3 3
17 --1:-n:2:-13 13
18 -n:-1:-12 12
19 --1:-12 12
NA LAST NA
'
set -- $tests
# Require that this test be run at 'nice' level 0.
niceness=$(nice)
if test "$niceness" = 0; then
: ok
else
skip_ "this test must be run at nice level 0"
fi
while :; do
test_name=$1
args=$2
expected_result=$3
test $args = empty && args=''
test x$args = xLAST && break
args=$(echo x$args|tr : ' '|sed 's/^x//')
if test "$VERBOSE" = yes; then
#echo "testing \$(nice $args nice\) = $expected_result ..."
echo "test $test_name... " | tr -d '\n'
fi
test x$(nice $args nice 2> /dev/null) = x$expected_result \
&& ok=ok || ok=FAIL fail=1
test "$VERBOSE" = yes && echo $ok
shift; shift; shift
done
# Test negative niceness - command must be run whether or not change happens.
if test x$(nice -n -1 nice 2> /dev/null) = x0 ; then
# GNU/Hurd does not allow negative niceness even if we are a privileged user.
if test "$(uname)" = GNU; then
max_nice=$(nice -n "$INT_MAX" nice) || fail=1
# Check that the lowest niceness is 0.
nice -n -1 nice > out || fail=1
echo '0' > exp || framework_failure_
compare exp out || fail=1
# Exceeding the max niceness would lead to the program not being executed on
# GNU/Hurd with coreutils 9.8 and earlier.
nice -n $(("$max_nice" + 1)) nice > out || fail=1
echo "$max_nice" > exp || framework_failure_
compare exp out || fail=1
# GNU/Hurd's nice(2) with glibc 2.42 and earlier does not clamp the
# niceness to the supported range. Check that we workaround the bug.
# See <https://sourceware.org/PR33614>.
nice -n 1 nice -n $(("$max_nice" - 2)) nice > out|| fail=1
echo $(("$max_nice" - 1)) > exp || framework_failure_
compare exp out || fail=1
nice -n 1 nice -n $(("$max_nice" + 1)) nice > out || fail=1
echo "$max_nice" > exp || framework_failure_
compare exp out || fail=1
nice -n 2 nice -n -1 nice > out || fail=1
echo '1' > exp || framework_failure_
compare exp out || fail=1
nice -n 2 nice -n -3 nice > out || fail=1
echo '0' > exp || framework_failure_
compare exp out || fail=1
else
# unprivileged user - warn about failure to change
nice -n -1 true 2> err || fail=1
compare /dev/null err && fail=1
mv err exp || framework_failure_
nice --1 true 2> err || fail=1
compare exp err || fail=1
# Failure to write advisory message is fatal. Buggy through coreutils 8.0.
if test "$(uname)" != GNU && test -w /dev/full && test -c /dev/full; then
returns_ 125 nice -n -1 nice > out 2> /dev/full || fail=1
compare /dev/null out || fail=1
fi
fi
else
# superuser - change succeeds
nice -n -1 nice 2> err || fail=1
compare /dev/null err || fail=1
test x$(nice -n -1 nice) = x-1 || fail=1
test x$(nice --1 nice) = x-1 || fail=1
fi
# Ensure large values are clamped
nice -n $UINTMAX_OFLOW nice || fail=1
Exit $fail
|
