d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Sysctl nodes are written to, so don't put them in the text section.

Browse Source 
Our write protection of the kernel text on i386's doesn't actually
work in many cases:
- use of the 4MB page completely breaks it.
- CR0_WP isn't set until just before init is started, so the kernel
  text is not write protected during kernel initialization.
This commit is contained in:
Bruce Evans 1998-09-05 14:13:35 +00:00
parent 0375c9f2b8
commit 266ead86bc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=38863
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sys/sys/sysctl.h
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* @(#)sysctl.h 8.1 (Berkeley) 6/2/93
* $Id: sysctl.h,v 1.62 1998/08/24 08:39:37 dfr Exp $
* $Id: sysctl.h,v 1.63 1998/09/05 12:42:56 bde Exp $
*/
#ifndef _SYS_SYSCTL_H_
@ -134,16 +134,16 @@ int sysctl_handle_opaque SYSCTL_HANDLER_ARGS;
/* This constructs a "raw" MIB oid. */
#define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
static const struct sysctl_oid sysctl__##parent##_##name = { \
static struct sysctl_oid sysctl__##parent##_##name = { \
nbr, kind, a1, a2, #name, handler, fmt }; \
TEXT_SET(sysctl_##parent, sysctl__##parent##_##name)
DATA_SET(sysctl_##parent, sysctl__##parent##_##name)
/* This constructs a node from which other oids can hang. */
#define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
extern struct linker_set sysctl_##parent##_##name; \
SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|access, \
(void*)&sysctl_##parent##_##name, 0, handler, "N", descr); \
TEXT_SET(sysctl_##parent##_##name, sysctl__##parent##_##name)
DATA_SET(sysctl_##parent##_##name, sysctl__##parent##_##name)
/* Oid for a string. len can be 0 to indicate '\0' termination. */
#define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \