sysdeps/nacl/dup2.c

   1 /* Duplicate a file descriptor to a chosen number.  NaCl version.
   2    Copyright (C) 2015-2016 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 <unistd.h>
  20 #include <nacl-interfaces.h>
  21
  22
  23 /* Duplicate FD to FD2, closing the old FD2 and making FD2 be
  24    open the same file as FD is.  Return FD2 or -1.  */
  25 int
  26 __dup2 (int fd, int fd2)
  27 {
  28   return NACL_CALL (__nacl_irt_fdio.dup2 (fd, fd2), fd2);
  29 }
  30 libc_hidden_def (__dup2)
  31 weak_alias (__dup2, dup2)