1 #!/bin/sh 2 # 3 # Ensure that strace can detach from sleeping processes. 4 # 5 # Copyright (c) 2013-2015 Dmitry V. Levin <ldv (at] altlinux.org> 6 # All rights reserved. 7 # 8 # Redistribution and use in source and binary forms, with or without 9 # modification, are permitted provided that the following conditions 10 # are met: 11 # 1. Redistributions of source code must retain the above copyright 12 # notice, this list of conditions and the following disclaimer. 13 # 2. Redistributions in binary form must reproduce the above copyright 14 # notice, this list of conditions and the following disclaimer in the 15 # documentation and/or other materials provided with the distribution. 16 # 3. The name of the author may not be used to endorse or promote products 17 # derived from this software without specific prior written permission. 18 # 19 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 . "${srcdir=.}/init.sh" 31 32 run_prog_skip_if_failed \ 33 kill -0 $$ 34 35 check_prog sleep 36 37 set -e 38 39 rm -f "$LOG" 40 ./set_ptracer_any sleep $((2*$TIMEOUT_DURATION)) > "$LOG" & 41 42 while ! [ -s "$LOG" ]; do 43 kill -0 $! 2> /dev/null || 44 fail_ 'set_ptracer_any sleep failed' 45 $SLEEP_A_BIT 46 done 47 48 tracee_pid=$! 49 50 cleanup() 51 { 52 set +e 53 kill $tracee_pid 54 wait $tracee_pid 2> /dev/null 55 return 0 56 } 57 58 rm -f "$LOG" 59 $STRACE -p $tracee_pid 2> "$LOG" & 60 61 while ! grep -F "Process $tracee_pid attached" "$LOG" > /dev/null; do 62 kill -0 $! 2> /dev/null || { 63 cleanup 64 dump_log_and_fail_with "$STRACE -p failed to attach" 65 } 66 $SLEEP_A_BIT 67 done 68 69 kill -INT $! 70 wait $! 71 72 grep -F "Process $tracee_pid detached" "$LOG" > /dev/null || { 73 cleanup 74 dump_log_and_fail_with "$STRACE -p failed to detach" 75 } 76 77 if [ -f /proc/self/status ]; then 78 $SLEEP_A_BIT 79 test -d /proc/$tracee_pid || { 80 cleanup 81 dump_log_and_fail_with 'tracee died after detach' 82 } 83 grep_pid_status "$tracee_pid" '^State:.*S (sleeping)' > /dev/null || { 84 grep_pid_status "$tracee_pid" '^State:' 85 cleanup 86 dump_log_and_fail_with 'tracee is not sleeping after detach' 87 } 88 fi 89 90 cleanup 91 exit 0 92
