io/open64.c

   1 /* Copyright (C) 1991-2023 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, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <fcntl.h>
  20 #include <stdarg.h>
  21 #include <stddef.h>
  22 #include <stdio.h>
  23
  24 /* Open FILE with access OFLAG.  If O_CREAT or O_TMPFILE is in OFLAG,
  25    a third argument is the file protection.  */
  26 int
  27 __libc_open64 (const char *file, int oflag)
  28 {
  29   int mode;
  30
  31   if (file == NULL)
  32     {
  33       __set_errno (EINVAL);
  34       return -1;
  35     }
  36
  37   if (__OPEN_NEEDS_MODE (oflag))
  38     {
  39       va_list arg;
  40       va_start (arg, oflag);
  41       mode = va_arg (arg, int);
  42       va_end (arg);
  43     }
  44
  45   __set_errno (ENOSYS);
  46   return -1;
  47 }
  48 strong_alias (__libc_open64, __open64)
  49 libc_hidden_def (__open64)
  50 weak_alias (__libc_open64, open64)
  51
  52 stub_warning (open64)
  53
  54 /* __open64_2 is a generic wrapper that calls __open64.
  55    So give a stub warning for that symbol too.  */
  56 stub_warning (__open64_2)