1#!/bin/sh 2 3# 4# Copyright (c) 2013 EMC Corp. 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# wait4(2) / ptrace(2) regression test. 30 31. ../default.cfg 32 33here=`pwd` 34cd /tmp 35sed '1,/^EOF/d' < $here/$0 > ptrace.c 36mycc -o ptrace -Wall -Wextra -g ptrace.c || exit 1 37rm -f ptrace.c 38cd $here 39 40/tmp/ptrace 41 42rm -f /tmp/ptrace 43exit 44 45EOF 46#include <sys/types.h> 47#include <err.h> 48#include <errno.h> 49#include <signal.h> 50#include <stdio.h> 51#include <unistd.h> 52#include <strings.h> 53#include <sys/ptrace.h> 54#include <sys/wait.h> 55#include <sys/time.h> 56#include <sys/resource.h> 57 58void 59test(void) 60{ 61 pid_t pid, rpid; 62 struct rusage ru; 63 int status; 64 65 if ((pid = fork()) == 0) { 66 usleep(2000); 67 _exit(64); 68 } 69 if (pid == -1) 70 err(1, "fork()"); 71 if (ptrace(PT_ATTACH, pid, NULL, 0) == -1) 72 err(1, "ptrace(%d) attach", pid); 73 if (wait(NULL) == -1) 74 err(1, "wait"); 75 bzero(&ru, sizeof(ru)); 76 usleep(2000); 77 if ((rpid = wait4(-1, &status, WNOHANG, &ru)) == -1) { 78 if (errno == ECHILD) 79 warn("FAIL"); 80 else 81 err(1, "wait4"); 82 } 83 if (rpid == 0) { 84// fprintf(stderr, "No rusage info.\n"); 85 if (ptrace(PT_DETACH, pid, NULL, 0) == -1) 86 err(1, "ptrace(%d) detach", pid); 87 if (wait(&status) == -1) 88 err(1, "wait"); 89 } else { 90 fprintf(stderr, "FAIL Got unexpected rusage.\n"); 91 if (ru.ru_utime.tv_sec != 0) 92 fprintf(stderr, "FAIL tv_sec\n"); 93 } 94 if (status != 0x4000) 95 fprintf(stderr, "FAIL Child exit status 0x%x\n", status); 96 97 _exit(0); 98} 99 100int 101main(void) 102{ 103 test(); 104 105 return (0); 106} 107