sysdeps/unix/sysv/linux/open64.c

   1 /* Copyright (C) 1991,1995-1997,1999,2000,2002 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 <fcntl.h>
  21 #include <stdarg.h>
  22 #include <bp-sym.h>
  23 #include <sysdep-cancel.h>
  24
  25 /* Open FILE with access OFLAG.  If OFLAG includes O_CREAT,
  26    a third argument is the file protection.  */
  27 int
  28 __libc_open64 (const char *file, int oflag, ...)
  29 {
  30   int mode = 0;
  31
  32   if (oflag & O_CREAT)
  33     {
  34       va_list arg;
  35       va_start (arg, oflag);
  36       mode = va_arg (arg, int);
  37       va_end (arg);
  38     }
  39
  40   if (SINGLE_THREAD_P)
  41     return INLINE_SYSCALL (open, 3, file, oflag | O_LARGEFILE, mode);
  42
  43   int oldtype = LIBC_CANCEL_ASYNC ();
  44
  45   int result = INLINE_SYSCALL (open, 3, file, oflag | O_LARGEFILE, mode);
  46
  47   LIBC_CANCEL_RESET (oldtype);
  48
  49   return result;
  50 }
  51 weak_alias (__libc_open64, BP_SYM (__open64))
  52 libc_hidden_weak (BP_SYM (__open64))
  53 weak_alias (__libc_open64, BP_SYM (open64))