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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /elf/enbl-secure.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
downloadglibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.gz
2.5-18.1
Diffstat (limited to 'elf/enbl-secure.c')
-rw-r--r--elf/enbl-secure.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/elf/enbl-secure.c b/elf/enbl-secure.c
new file mode 100644
index 0000000000..fac3b9c527
--- /dev/null
+++ b/elf/enbl-secure.c
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+/* 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 ());
+}