1#!/bin/sh 2# 3# Ensure that strace can detach from sleeping processes. 4# 5# Copyright (c) 2013-2015 Dmitry V. Levin <ldv@altlinux.org> 6# Copyright (c) 2014-2017 The strace developers. 7# All rights reserved. 8# 9# Redistribution and use in source and binary forms, with or without 10# modification, are permitted provided that the following conditions 11# are met: 12# 1. Redistributions of source code must retain the above copyright 13# notice, this list of conditions and the following disclaimer. 14# 2. Redistributions in binary form must reproduce the above copyright 15# notice, this list of conditions and the following disclaimer in the 16# documentation and/or other materials provided with the distribution. 17# 3. The name of the author may not be used to endorse or promote products 18# derived from this software without specific prior written permission. 19# 20# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31. "${srcdir=.}/init.sh" 32 33run_prog_skip_if_failed \ 34 kill -0 $$ 35 36check_prog sleep 37 38set -e 39 40../set_ptracer_any sleep $((2*$TIMEOUT_DURATION)) > "$LOG" & 41 42while ! [ -s "$LOG" ]; do 43 kill -0 $! 2> /dev/null || 44 fail_ 'set_ptracer_any sleep failed' 45 $SLEEP_A_BIT 46done 47 48tracee_pid=$! 49 50cleanup() 51{ 52 set +e 53 kill $tracee_pid 54 wait $tracee_pid 2> /dev/null 55 return 0 56} 57 58$STRACE -p $tracee_pid 2> "$LOG" & 59 60while ! grep -F "Process $tracee_pid attached" "$LOG" > /dev/null; do 61 kill -0 $! 2> /dev/null || { 62 cleanup 63 dump_log_and_fail_with "$STRACE -p failed to attach" 64 } 65 $SLEEP_A_BIT 66done 67 68kill -INT $! 69wait $! 70 71grep -F "Process $tracee_pid detached" "$LOG" > /dev/null || { 72 cleanup 73 dump_log_and_fail_with "$STRACE -p failed to detach" 74} 75 76if [ -f /proc/self/status ]; then 77 $SLEEP_A_BIT 78 test -d /proc/$tracee_pid || { 79 cleanup 80 dump_log_and_fail_with 'tracee died after detach' 81 } 82 grep_pid_status "$tracee_pid" '^State:.*S (sleeping)' > /dev/null || { 83 grep_pid_status "$tracee_pid" '^State:' 84 cleanup 85 dump_log_and_fail_with 'tracee is not sleeping after detach' 86 } 87fi 88 89cleanup 90exit 0 91