1 /* 2 * Check decoding of prctl PR_GET_PDEATHSIG/PR_SET_PDEATHSIG operations. 3 * 4 * Copyright (c) 2016 JingPiao Chen <chenjingpiao (at) foxmail.com> 5 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr (at) gmail.com> 6 * Copyright (c) 2016-2017 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 32 #include "tests.h" 33 #include <asm/unistd.h> 34 #include <linux/prctl.h> 35 36 #if defined __NR_prctl && defined PR_GET_PDEATHSIG && defined PR_SET_PDEATHSIG 37 38 # include <stdio.h> 39 # include <unistd.h> 40 # include <sys/signal.h> 41 42 int 43 main(void) 44 { 45 static const kernel_ulong_t bogus_signal = 46 (kernel_ulong_t) 0xbadc0deddeadfeedULL; 47 48 TAIL_ALLOC_OBJECT_CONST_PTR(int, pdeathsig); 49 long rc; 50 51 rc = syscall(__NR_prctl, PR_SET_PDEATHSIG, bogus_signal); 52 printf("prctl(PR_SET_PDEATHSIG, %llu) = %s\n", 53 (unsigned long long) bogus_signal, sprintrc(rc)); 54 55 rc = syscall(__NR_prctl, PR_SET_PDEATHSIG, SIGINT); 56 printf("prctl(PR_SET_PDEATHSIG, SIGINT) = %s\n", sprintrc(rc)); 57 58 rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, NULL); 59 printf("prctl(PR_GET_PDEATHSIG, NULL) = %s\n", sprintrc(rc)); 60 61 rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, pdeathsig + 1); 62 printf("prctl(PR_GET_PDEATHSIG, %p) = %s\n", 63 pdeathsig + 1, sprintrc(rc)); 64 65 rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, pdeathsig); 66 if (rc) { 67 printf("prctl(PR_GET_PDEATHSIG, %p) = %s\n", 68 pdeathsig, sprintrc(rc)); 69 } else { 70 printf("prctl(PR_GET_PDEATHSIG, [SIGINT]) = %s\n", 71 sprintrc(rc)); 72 } 73 74 puts("+++ exited with 0 +++"); 75 return 0; 76 } 77 78 #else 79 80 SKIP_MAIN_UNDEFINED("__NR_prctl && PR_GET_PDEATHSIG && PR_SET_PDEATHSIG") 81 82 #endif 83
