1 /* 2 * Copyright (c) 2013-2015 Dmitry V. Levin <ldv (at) altlinux.org> 3 * Copyright (c) 2013-2018 The strace developers. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "tests.h" 30 #include <stdio.h> 31 #include <unistd.h> 32 #ifdef HAVE_PRCTL 33 # include <sys/prctl.h> 34 #endif 35 36 int main(int argc, char **argv) 37 { 38 if (argc < 2) 39 return 99; 40 #ifdef HAVE_PRCTL 41 /* Turn off restrictions on tracing if applicable. If the command 42 * aren't available on this system, that's OK too. */ 43 # ifndef PR_SET_PTRACER 44 # define PR_SET_PTRACER 0x59616d61 45 # endif 46 # ifndef PR_SET_PTRACER_ANY 47 # define PR_SET_PTRACER_ANY -1UL 48 # endif 49 (void) prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY, 0, 0, 0); 50 #endif 51 if (write(1, "\n", 1) != 1) { 52 perror("write"); 53 return 99; 54 } 55 (void) execvp(argv[1], argv + 1); 56 perror(argv[1]); 57 return 99; 58 } 59
