1  /* Copyright (C) 2003-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <errno.h>
      19  #include <pthread.h>
      20  #include <signal.h>
      21  #include <stdio.h>
      22  #include <stdlib.h>
      23  #include <string.h>
      24  #include <unistd.h>
      25  #include <sys/mman.h>
      26  #include <sys/wait.h>
      27  
      28  
      29  static sigset_t ss;
      30  
      31  
      32  static void *
      33  tf (void *arg)
      34  {
      35    sigset_t ss2;
      36    if (pthread_sigmask (SIG_SETMASK, NULL, &ss2) != 0)
      37      {
      38        puts ("child: sigmask failed");
      39        exit (1);
      40      }
      41  
      42    int i;
      43    for (i = 1; i < 32; ++i)
      44      if (sigismember (&ss, i) && ! sigismember (&ss2, i))
      45        {
      46  	printf ("signal %d set in parent mask, but not in child\n", i);
      47  	exit (1);
      48        }
      49      else if (! sigismember (&ss, i) && sigismember (&ss2, i))
      50        {
      51  	printf ("signal %d set in child mask, but not in parent\n", i);
      52  	exit (1);
      53        }
      54  
      55    return NULL;
      56  }
      57  
      58  
      59  static int
      60  do_test (void)
      61  {
      62    sigemptyset (&ss);
      63    sigaddset (&ss, SIGUSR1);
      64    if (pthread_sigmask (SIG_SETMASK, &ss, NULL) != 0)
      65      {
      66        puts ("1st sigmask failed");
      67        exit (1);
      68      }
      69  
      70    pthread_t th;
      71    if (pthread_create (&th, NULL, tf, NULL) != 0)
      72      {
      73        puts ("1st create failed");
      74        exit (1);
      75      }
      76  
      77    void *r;
      78    if (pthread_join (th, &r) != 0)
      79      {
      80        puts ("1st join failed");
      81        exit (1);
      82      }
      83  
      84    sigemptyset (&ss);
      85    sigaddset (&ss, SIGUSR2);
      86    sigaddset (&ss, SIGFPE);
      87    if (pthread_sigmask (SIG_SETMASK, &ss, NULL) != 0)
      88      {
      89        puts ("2nd sigmask failed");
      90        exit (1);
      91      }
      92  
      93    if (pthread_create (&th, NULL, tf, NULL) != 0)
      94      {
      95        puts ("2nd create failed");
      96        exit (1);
      97      }
      98  
      99    if (pthread_join (th, &r) != 0)
     100      {
     101        puts ("2nd join failed");
     102        exit (1);
     103      }
     104  
     105    return 0;
     106  }
     107  
     108  #define TEST_FUNCTION do_test ()
     109  #include "../test-skeleton.c"