support/xsendto.c

   1 /* sendto with error checking.
   2    Copyright (C) 2016-2018 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <support/xsocket.h>
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <support/check.h>
  24
  25 void
  26 xsendto (int fd, const void *buf, size_t buflen, int flags,
  27          const struct sockaddr *sa, socklen_t salen)
  28 {
  29   ssize_t ret = sendto (fd, buf, buflen, flags, sa, salen);
  30   if (ret < 0)
  31     FAIL_EXIT1 ("sendto (%d), %zu bytes, family %d: %m",
  32                 fd, buflen, sa->sa_family);
  33   if (ret != buflen)
  34     FAIL_EXIT1 ("sendto (%d) sent %zd bytes instead of %zu", fd, ret, buflen);
  35 }