support/xrecvfrom.c

   1 /* recvfrom with error checking.
   2    Copyright (C) 2016-2017 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 size_t
  26 xrecvfrom (int fd, void *buf, size_t buflen, int flags,
  27            struct sockaddr *sa, socklen_t *salen)
  28 {
  29   ssize_t ret = recvfrom (fd, buf, buflen, flags, sa, salen);
  30   if (ret < 0)
  31     FAIL_EXIT1 ("error: recvfrom (%d), %zu bytes buffer: %m", fd, buflen);
  32   return ret;
  33 }