tests/timeout/timeout-group.sh

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