glibc/sysdeps/unix/sysv/linux/open64.c

/* Copyright (C) 1991-2015 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <sysdep-cancel.h>

/* Open FILE with access OFLAG.  If O_CREAT or O_TMPFILE is in OFLAG,
   a third argument is the file protection.  */
int
__libc_open64 (const char *file, int oflag, ...)
{
  int mode = 0;

  if (__OPEN_NEEDS_MODE (oflag))
    {
      va_list arg;
      va_start (arg, oflag);
      mode = va_arg (arg, int);
      va_end (arg);
    }

  if (SINGLE_THREAD_P)
    return INLINE_SYSCALL (open, 3, file, oflag | O_LARGEFILE, mode);

  int oldtype = LIBC_CANCEL_ASYNC ();

  int result = INLINE_SYSCALL (open, 3, file, oflag | O_LARGEFILE, mode);

  LIBC_CANCEL_RESET (oldtype);

  return result;
}
weak_alias (__libc_open64, __open64)
libc_hidden_weak (__open64)
weak_alias (__libc_open64, open64)