[39/58] Hide internal __get_sol function [BZ #18822]
Commit Message
Hide internal __get_sol function to allow direct access within libc.so
and libc.a without using GOT nor PLT.
[BZ #18822]
* sysdeps/unix/sysv/linux/getsourcefilter.c: Include
"getsourcefilter.h".
* sysdeps/unix/sysv/linux/getsourcefilter.h: New file.
* sysdeps/unix/sysv/linux/setsourcefilter.c: Include
"getsourcefilter.h".
(__get_sol): Removed.
---
sysdeps/unix/sysv/linux/getsourcefilter.c | 1 +
sysdeps/unix/sysv/linux/getsourcefilter.h | 20 ++++++++++++++++++++
sysdeps/unix/sysv/linux/setsourcefilter.c | 5 +----
3 files changed, 22 insertions(+), 4 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/getsourcefilter.h
Comments
On 9/1/17, H.J. Lu <hjl.tools@gmail.com> wrote:
> Hide internal __get_sol function to allow direct access within libc.so
> and libc.a without using GOT nor PLT.
>
> [BZ #18822]
> * sysdeps/unix/sysv/linux/getsourcefilter.c: Include
> "getsourcefilter.h".
> * sysdeps/unix/sysv/linux/getsourcefilter.h: New file.
> * sysdeps/unix/sysv/linux/setsourcefilter.c: Include
> "getsourcefilter.h".
> (__get_sol): Removed.
Tested with build-many-glibcs.py. I am checking it in.
@@ -31,6 +31,7 @@
#include <netrose/rose.h>
#include <sys/param.h>
#include <sys/socket.h>
+#include "getsourcefilter.h"
static const struct
new file mode 100644
@@ -0,0 +1,20 @@
+/* __get_sol function prototype.
+ Copyright (C) 2017 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, see
+ <http://www.gnu.org/licenses/>. */
+
+/* Defined in getsourcefilter.c. */
+extern int __get_sol (int af, socklen_t len) attribute_hidden;
@@ -24,10 +24,7 @@
#include <stdint.h>
#include <netinet/in.h>
#include <sys/socket.h>
-
-
-/* Defined in getsourcefilter.c. */
-extern int __get_sol (int af, socklen_t len);
+#include "getsourcefilter.h"
int