1  /*
       2   * Check decoding of prctl PR_GET_PDEATHSIG/PR_SET_PDEATHSIG operations.
       3   *
       4   * Copyright (c) 2016 JingPiao Chen <chenjingpiao@foxmail.com>
       5   * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
       6   * Copyright (c) 2016-2021 The strace developers.
       7   * All rights reserved.
       8   *
       9   * SPDX-License-Identifier: GPL-2.0-or-later
      10   */
      11  
      12  #include "tests.h"
      13  #include "scno.h"
      14  #include <stdio.h>
      15  #include <unistd.h>
      16  #include <signal.h>
      17  #include <linux/prctl.h>
      18  
      19  int
      20  main(void)
      21  {
      22  	static const kernel_ulong_t bogus_signal =
      23  		(kernel_ulong_t) 0xbadc0deddeadfeedULL;
      24  
      25  	TAIL_ALLOC_OBJECT_CONST_PTR(int, pdeathsig);
      26  	long rc;
      27  
      28  	prctl_marker();
      29  
      30  	rc = syscall(__NR_prctl, PR_SET_PDEATHSIG, bogus_signal);
      31  	printf("prctl(PR_SET_PDEATHSIG, %llu) = %s\n",
      32  	       (unsigned long long) bogus_signal, sprintrc(rc));
      33  
      34  	rc = syscall(__NR_prctl, PR_SET_PDEATHSIG, SIGINT);
      35  	printf("prctl(PR_SET_PDEATHSIG, SIGINT) = %s\n", sprintrc(rc));
      36  
      37  	rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, NULL);
      38  	printf("prctl(PR_GET_PDEATHSIG, NULL) = %s\n", sprintrc(rc));
      39  
      40  	rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, pdeathsig + 1);
      41  	printf("prctl(PR_GET_PDEATHSIG, %p) = %s\n",
      42  	       pdeathsig + 1, sprintrc(rc));
      43  
      44  	rc = syscall(__NR_prctl, PR_GET_PDEATHSIG, pdeathsig);
      45  	if (rc) {
      46  		printf("prctl(PR_GET_PDEATHSIG, %p) = %s\n",
      47  		       pdeathsig, sprintrc(rc));
      48  	} else {
      49  		printf("prctl(PR_GET_PDEATHSIG, [SIGINT]) = %s\n",
      50  		       sprintrc(rc));
      51  	}
      52  
      53  	puts("+++ exited with 0 +++");
      54  	return 0;
      55  }