granicus.if.org Git - strace/blob - tests/detach-running.test

   1 #!/bin/sh
   2
   3 # Ensure that strace can detach from running processes.
   4
   5 . "${srcdir=.}/init.sh"
   6
   7 run_prog_skip_if_failed \
   8         kill -0 $$
   9
  10 check_prog sleep
  11
  12 set -e
  13
  14 ./set_ptracer_any sh -c "echo > $LOG; while :; do :; done" > /dev/null &
  15
  16 while ! [ -s "$LOG" ]; do
  17         kill -0 $! 2> /dev/null ||
  18                 fail_ 'set_ptracer_any sh failed'
  19         $SLEEP_A_BIT
  20 done
  21
  22 tracee_pid=$!
  23
  24 cleanup()
  25 {
  26         set +e
  27         kill $tracee_pid
  28         wait $tracee_pid 2> /dev/null
  29         return 0
  30 }
  31
  32 rm -f "$LOG"
  33 $STRACE -p $tracee_pid 2> "$LOG" &
  34
  35 while ! grep -F "Process $tracee_pid attached" "$LOG" > /dev/null; do
  36         kill -0 $! 2> /dev/null || {
  37                 cleanup
  38                 dump_log_and_fail_with "$STRACE -p failed to attach"
  39         }
  40         $SLEEP_A_BIT
  41 done
  42
  43 kill -INT $!
  44 wait $!
  45
  46 grep -F "Process $tracee_pid detached" "$LOG" > /dev/null || {
  47                 cleanup
  48                 dump_log_and_fail_with "$STRACE -p failed to detach"
  49         }
  50
  51 if [ -f /proc/self/status ]; then
  52         $SLEEP_A_BIT
  53         test -d /proc/$tracee_pid || {
  54                 cleanup
  55                 dump_log_and_fail_with 'tracee died after detach'
  56         }
  57         grep '^State:.*R (running)' < /proc/$tracee_pid/status > /dev/null || {
  58                 grep '^State:' < /proc/$tracee_pid/status
  59                 cleanup
  60                 dump_log_and_fail_with 'tracee is not running after detach'
  61         }
  62 fi
  63
  64 cleanup
  65 exit 0