1#!/bin/sh
2# test program group handling
3
4# Copyright (C) 2011-2023 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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
20print_ver_ timeout
21require_trap_signame_
22require_kill_group_
23
24# construct a program group hierarchy as follows:
25#  timeout-group - foreground group
26#    group.sh - separate group
27#      timeout.cmd - same group as group.sh
28#
29# We then send a SIGINT to the "separate group"
30# to simulate what happens when a Ctrl-C
31# is sent to the foreground group.
32
33setsid true || skip_ "setsid required to control groups"
34
35printf '%s\n' '#!'"$SHELL" > timeout.cmd || framework_failure_
36cat >> timeout.cmd <<\EOF
37trap 'touch int.received; exit' INT
38touch timeout.running
39count=$1
40until test -e int.received || test $count = 0; do
41  sleep 1
42  count=$(expr $count - 1)
43done
44EOF
45chmod a+x timeout.cmd
46
47cat > group.sh <<EOF
48#!$SHELL
49trap '' INT
50timeout --foreground 25 ./timeout.cmd 20&
51wait
52EOF
53chmod a+x group.sh
54
55check_timeout_cmd_running()
56{
57  local delay="$1"
58  test -e timeout.running ||
59    { sleep $delay; return 1; }
60}
61
62# Terminate any background processes
63cleanup_() { kill $pid 2>/dev/null && wait $pid; }
64
65# Start above script in its own group.
66# We could use timeout for this, but that assumes an implementation.
67setsid ./group.sh & pid=$!
68# Wait 6.3s for timeout.cmd to start
69retry_delay_ check_timeout_cmd_running .1 6 || fail=1
70# Simulate a Ctrl-C to the group to test timely exit
71kill -INT -- -$pid
72wait
73test -e int.received || fail=1
74
75rm -f int.received timeout.running
76
77
78# Ensure cascaded timeouts work
79# or more generally, ensure we timeout
80# commands that create their own group
81# This didn't work before 8.13.
82
83start=$(date +%s)
84
85# Note the first timeout must send a signal that
86# the second is handling for it to be propagated to the command.
87# SIGINT, SIGTERM, SIGALRM etc. are implicit.
88timeout -sALRM 30 timeout -sINT 25 ./timeout.cmd 20 & pid=$!
89# Wait 6.3s for timeout.cmd to start
90retry_delay_ check_timeout_cmd_running .1 6 || fail=1
91kill -ALRM $pid # trigger the alarm of the first timeout command
92wait $pid
93ret=$?
94test $ret -eq 124 ||
95  skip_ "timeout returned $ret. SIGALRM not handled?"
96test -e int.received || fail=1
97
98end=$(date +%s)
99
100test $(expr $end - $start) -lt 20 ||
101  skip_ "timeout.cmd didn't receive a signal until after sleep?"
102
103Exit $fail
104