io/open.c

   1 /* Copyright (C) 1991,1995,1996,1997,2002,2007 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 <stddef.h>
  23 #include <stdio.h>
  24
  25 extern char **__libc_argv attribute_hidden;
  26
  27 /* Open FILE with access OFLAG.  If OFLAG includes O_CREAT,
  28    a third argument is the file protection.  */
  29 int
  30 __open (file, oflag)
  31      const char *file;
  32      int oflag;
  33 {
  34   int mode;
  35
  36   if (file == NULL)
  37     {
  38       __set_errno (EINVAL);
  39       return -1;
  40     }
  41
  42   if (oflag & O_CREAT)
  43     {
  44       va_list arg;
  45       va_start(arg, oflag);
  46       mode = va_arg(arg, int);
  47       va_end(arg);
  48     }
  49
  50   __set_errno (ENOSYS);
  51   return -1;
  52 }
  53 libc_hidden_def (__open)
  54 stub_warning (open)
  55
  56 weak_alias (__open, open)
  57
  58
  59 int
  60 __open_2 (file, oflag)
  61      const char *file;
  62      int oflag;
  63 {
  64   if (oflag & O_CREAT)
  65     __fortify_fail ("invalid open call: O_CREAT without mode");
  66
  67   return __open (file, oflag);
  68 }
  69 stub_warning (__open_2)
  70
  71 #include <stub-tag.h>