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