socket/tst-sockopt.c

   1 /* Smoke test for socket options.
   2    Copyright (C) 2021-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <support/xsocket.h>
  20 #include <support/xunistd.h>
  21 #include <support/check.h>
  22 #include <netinet/in.h>
  23
  24 static int
  25 do_test (void)
  26 {
  27   int fd = xsocket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
  28
  29   struct linger value = { -1, -1 };
  30   socklen_t optlen = sizeof (value);
  31   TEST_COMPARE (getsockopt (fd, SOL_SOCKET, SO_LINGER, &value, &optlen), 0);
  32   TEST_COMPARE (optlen, sizeof (value));
  33   TEST_COMPARE (value.l_onoff, 0);
  34   TEST_COMPARE (value.l_linger, 0);
  35
  36   value.l_onoff = 1;
  37   value.l_linger = 30;
  38   TEST_COMPARE (setsockopt (fd, SOL_SOCKET, SO_LINGER, &value, sizeof (value)),
  39                 0);
  40
  41   value.l_onoff = -1;
  42   value.l_linger = -1;
  43   TEST_COMPARE (getsockopt (fd, SOL_SOCKET, SO_LINGER, &value, &optlen), 0);
  44   TEST_COMPARE (optlen, sizeof (value));
  45   TEST_COMPARE (value.l_onoff, 1);
  46   TEST_COMPARE (value.l_linger, 30);
  47
  48   xclose (fd);
  49   return 0;
  50 }
  51
  52 #include <support/test-driver.c>