1  /* Copyright (C) 2002-2023 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 <pthread.h>
      19  #include <signal.h>
      20  #include <stdio.h>
      21  #include <unistd.h>
      22  
      23  
      24  static int fd[2];
      25  
      26  
      27  static void *
      28  tf (void *arg)
      29  {
      30    char buf[100];
      31  
      32    if (read (fd[0], buf, sizeof (buf)) == sizeof (buf))
      33      {
      34        puts ("read succeeded");
      35        return (void *) 1l;
      36      }
      37  
      38    return NULL;
      39  }
      40  
      41  
      42  static int
      43  do_test (void)
      44  {
      45    pthread_t th;
      46    void *r;
      47    struct sigaction sa;
      48  
      49    sa.sa_handler = SIG_IGN;
      50    sigemptyset (&sa.sa_mask);
      51    sa.sa_flags = 0;
      52  
      53    if (sigaction (SIGPIPE, &sa, NULL) != 0)
      54      {
      55        puts ("sigaction failed");
      56        return 1;
      57      }
      58  
      59    if (pipe (fd) != 0)
      60      {
      61        puts ("pipe failed");
      62        return 1;
      63      }
      64  
      65    if (pthread_create (&th, NULL, tf, NULL) != 0)
      66      {
      67        puts ("create failed");
      68        return 1;
      69      }
      70  
      71    if (pthread_cancel (th) != 0)
      72      {
      73        puts ("cancel failed");
      74        return 1;
      75      }
      76  
      77    /* This will cause the read in the child to return.  */
      78    close (fd[0]);
      79  
      80    if (pthread_join (th, &r) != 0)
      81      {
      82        puts ("join failed");
      83        return 1;
      84      }
      85  
      86    if (r != PTHREAD_CANCELED)
      87      {
      88        puts ("result is wrong");
      89        return 1;
      90      }
      91  
      92    return 0;
      93  }
      94  
      95  #define TEST_FUNCTION do_test ()
      96  #include "../test-skeleton.c"