1  /* Test listen() function.
       2     Copyright (C) 2011-2021 Free Software Foundation, Inc.
       3  
       4     This program is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU General Public License as published by
       6     the Free Software Foundation; either version 3 of the License, or
       7     (at your option) any later version.
       8  
       9     This program 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
      12     GNU General Public License for more details.
      13  
      14     You should have received a copy of the GNU General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  #include <config.h>
      18  
      19  #include <sys/socket.h>
      20  
      21  #include "signature.h"
      22  SIGNATURE_CHECK (listen, int, (int, int));
      23  
      24  #include <errno.h>
      25  #include <unistd.h>
      26  
      27  #include "sockets.h"
      28  #include "macros.h"
      29  
      30  int
      31  main (void)
      32  {
      33    (void) gl_sockets_startup (SOCKETS_1_1);
      34  
      35    /* Test behaviour for invalid file descriptors.  */
      36    {
      37      errno = 0;
      38      ASSERT (listen (-1, 1) == -1);
      39      ASSERT (errno == EBADF);
      40    }
      41    {
      42      close (99);
      43      errno = 0;
      44      ASSERT (listen (99 ,1) == -1);
      45      ASSERT (errno == EBADF);
      46    }
      47  
      48    return 0;
      49  }