ports/sysdeps/unix/sysv/linux/generic/recv.c

   1 /* Copyright (C) 2011-2014 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
   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 <stdlib.h>
  20 #include <sys/types.h>
  21 #include <sysdep-cancel.h>
  22 #include <libc-symbols.h>
  23
  24 ssize_t
  25 __libc_recv (int sockfd, void *buffer, size_t len, int flags)
  26 {
  27   ssize_t result;
  28
  29   if (SINGLE_THREAD_P)
  30     result = INLINE_SYSCALL (recvfrom, 6, sockfd, buffer, len, flags,
  31                              NULL, NULL);
  32   else
  33     {
  34       int oldtype = LIBC_CANCEL_ASYNC ();
  35
  36       result = INLINE_SYSCALL (recvfrom, 6, sockfd, buffer, len, flags,
  37                                NULL, NULL);
  38
  39       LIBC_CANCEL_RESET (oldtype);
  40     }
  41
  42   return result;
  43 }
  44 strong_alias (__libc_recv, __recv)
  45 weak_alias (__libc_recv, recv)