tests/tail-2/pid

   1 #!/bin/sh
   2 # Test the --pid option of tail.
   3
   4 # Copyright (C) 2003, 2006-2009 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 <http://www.gnu.org/licenses/>.
  18
  19 if test "$VERBOSE" = yes; then
  20   set -x
  21   tail --version
  22 fi
  23
  24 . $srcdir/test-lib.sh
  25
  26 require_proc_pid_status_
  27
  28 touch here || framework_failure
  29
  30
  31 fail=0
  32
  33 # Use tail itself to create a background process.
  34
  35 tail -f here &
  36 bg_pid=$!
  37
  38 tail -s0.1 -f here --pid=$bg_pid &
  39
  40 pid=$!
  41
  42 sleep 0.5
  43
  44 state=$(get_process_status_ $pid)
  45
  46 if test -n "$state"; then
  47   case $state in
  48     S*) ;;
  49     *) echo "$0: process dead? (state=$state)" 1>&2; fail=1 ;;
  50   esac
  51   kill $pid
  52 fi
  53
  54 kill $bg_pid
  55
  56 sleep 0.5
  57
  58 state=$(get_process_status_ $pid)
  59
  60 if test -n "$state"; then
  61   case $state in
  62     S*) echo $0: process still active 1>&2; fail=1 ;;
  63     *) ;;
  64   esac
  65   kill $pid
  66 fi
  67
  68 # Ensure that tail --pid=PID exits successfully when PID is dead.
  69 # Use an unlikely-to-be-live PID: 2^31-1
  70 getlimits_
  71 tail --pid=$INT_MAX -f /dev/null || fail=1
  72
  73 Exit $fail