sysdeps/pthread/tst-signal5.c

   1 /* Copyright (C) 2003-2024 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"