mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 10:30:20 +00:00
be4d80380a
* sysdeps/generic/enbl-secure.c (__libc_enable_secure_decided): New variable. (__libc_init_secure): Don't do anything if __libc_enable_secure_decided is nonzero. * include/unistd.h: Declare __libc_enable_secure_decided. * elf/dl-support.c (_dl_aux_init): Recognize AT_UID, AT_EUID, AT_GID, and AT_EGID. If all found, set __libc_enable_secure and __libc_enable_secure_decided.
38 lines
1.5 KiB
C
38 lines
1.5 KiB
C
/* Define and initialize the `__libc_enable_secure' flag. Generic version.
|
|
Copyright (C) 1996, 1997, 1998, 2000, 2003 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
/* This file is used in the static libc. For the shared library,
|
|
dl-sysdep.c defines and initializes __libc_enable_secure. */
|
|
|
|
#include <unistd.h>
|
|
#include <libc-internal.h>
|
|
|
|
/* If nonzero __libc_enable_secure is already set. */
|
|
int __libc_enable_secure_decided;
|
|
/* Safest assumption, if somehow the initializer isn't run. */
|
|
int __libc_enable_secure = 1;
|
|
|
|
void
|
|
__libc_init_secure (void)
|
|
{
|
|
if (__libc_enable_secure_decided == 0)
|
|
__libc_enable_secure = (__geteuid () != __getuid ()
|
|
|| __getegid () != __getgid ());
|
|
}
|