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