1: /* Define and initialize the `__libc_enable_secure' flag.  Generic version.
    2:    Copyright (C) 1996, 1997, 1998, 2000, 2003 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, write to the Free
   17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   18:    02111-1307 USA.  */
   19: 
   20: /* This file is used in the static libc.  For the shared library,
   21:    dl-sysdep.c defines and initializes __libc_enable_secure.  */
   22: 
   23: #include <unistd.h>
   24: #include <libc-internal.h>
   25: 
   26: /* If nonzero __libc_enable_secure is already set.  */
   27: int __libc_enable_secure_decided;
   28: /* Safest assumption, if somehow the initializer isn't run.  */
   29: int __libc_enable_secure = 1;
   30: 
   31: void
   32: __libc_init_secure (void)
   33: {
   34:   if (__libc_enable_secure_decided == 0)
   35:     __libc_enable_secure = (__geteuid () != __getuid ()
   36:                             || __getegid () != __getgid ());
   37: }