tests/test-sys_socket.c

   1 /* Test of <sys/socket.h> substitute.
   2    Copyright (C) 2007, 2009-2024 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 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
  18
  19 #include <config.h>
  20
  21 #include <sys/socket.h>
  22
  23 #if HAVE_SHUTDOWN
  24 /* Check some integer constant expressions.  */
  25 int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };
  26 #endif
  27
  28 /* Check that the 'socklen_t' type is defined.  */
  29 socklen_t t1;
  30
  31 /* Check that the 'size_t' and 'ssize_t' types are defined.  */
  32 size_t t2;
  33 ssize_t t3;
  34
  35 /* Check that 'struct iovec' is defined.  */
  36 struct iovec io;
  37
  38 /* Check that a minimal set of 'struct msghdr' is defined.  */
  39 struct msghdr msg;
  40
  41 #include <errno.h>
  42
  43 int
  44 main (void)
  45 {
  46   struct sockaddr_storage x;
  47   sa_family_t i;
  48
  49   /* Check some errno values.  */
  50   switch (ENOTSOCK)
  51     {
  52     case ENOTSOCK:
  53     case EADDRINUSE:
  54     case ENETRESET:
  55     case ECONNABORTED:
  56     case ECONNRESET:
  57     case ENOTCONN:
  58     case ESHUTDOWN:
  59       break;
  60     }
  61
  62   x.ss_family = 42;
  63   i = 42;
  64   msg.msg_iov = &io;
  65
  66   return (x.ss_family - i + msg.msg_namelen + msg.msg_iov->iov_len
  67           + msg.msg_iovlen);
  68 }