sysdeps/unix/sysv/linux/x86_64/recv.c

   1 /* Copyright (C) 2001, 2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library 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 GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <sys/socket.h>
  21 #include <sysdep-cancel.h>
  22
  23 /* Read N bytes into BUF from socket FD.
  24    Returns the number read or -1 for errors.  */
  25
  26 ssize_t
  27 __libc_recv (int fd, void *buf, size_t n, int flags)
  28 {
  29   if (SINGLE_THREAD_P)
  30     return INLINE_SYSCALL (recvfrom, 6, fd, buf, n, flags, NULL, NULL);
  31
  32   int oldtype = LIBC_CANCEL_ASYNC ();
  33
  34   ssize_t result = INLINE_SYSCALL (recvfrom, 6, fd, buf, n, flags, NULL, NULL);
  35
  36   LIBC_CANCEL_RESET (oldtype);
  37
  38   return result;
  39 }
  40
  41 weak_alias (__libc_recv, __recv)
  42 weak_alias (__recv, recv)