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Begin to add SDT tracing of the MAC Framework: add policy modevent,

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register, and unregister hooks that give access to the mac_policy_conf
for the policy.

Obtained from:	TrustedBSD Project
MFC after:	3 days
This commit is contained in:
Robert Watson 2009-01-24 10:57:32 +00:00
parent 91dd9aae1a
commit 91ec000612
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=187666
1 changed files with 24 additions and 1 deletions
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25
sys/security/mac/mac_framework.c
View File

@ -1,5 +1,5 @@
/*-
* Copyright (c) 1999-2002, 2006 Robert N. M. Watson
* Copyright (c) 1999-2002, 2006, 2009 Robert N. M. Watson
* Copyright (c) 2001 Ilmar S. Habibulin
* Copyright (c) 2001-2005 Networks Associates Technology, Inc.
* Copyright (c) 2005-2006 SPARTA, Inc.
@ -63,6 +63,7 @@
* src/sys/security/mac_*.
*/
#include "opt_kdtrace.h"
#include "opt_mac.h"
#include <sys/cdefs.h>
@ -75,6 +76,7 @@ __FBSDID("$FreeBSD$");
#include <sys/mutex.h>
#include <sys/mac.h>
#include <sys/module.h>
#include <sys/sdt.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
@ -82,6 +84,24 @@ __FBSDID("$FreeBSD$");
#include <security/mac/mac_internal.h>
#include <security/mac/mac_policy.h>
/*
* DTrace SDT provider for MAC.
*/
SDT_PROVIDER_DEFINE(mac);
SDT_PROBE_DEFINE(mac, kernel, policy, modevent);
SDT_PROBE_ARGTYPE(mac, kernel, policy, modevent, 0, "int");
SDT_PROBE_ARGTYPE(mac, kernel, policy, modevent, 1,
"struct mac_policy_conf *mpc");
SDT_PROBE_DEFINE(mac, kernel, policy, register);
SDT_PROBE_ARGTYPE(mac, kernel, policy, register, 0,
"struct mac_policy_conf *");
SDT_PROBE_DEFINE(mac, kernel, policy, unregister);
SDT_PROBE_ARGTYPE(mac, kernel, policy, unregister, 0,
"struct mac_policy_conf *");
/*
* Root sysctl node for all MAC and MAC policy controls.
*/
@ -458,6 +478,7 @@ mac_policy_register(struct mac_policy_conf *mpc)
(*(mpc->mpc_ops->mpo_init))(mpc);
mac_policy_updateflags();
SDT_PROBE(mac, kernel, policy, register, mpc, 0, 0, 0, 0);
printf("Security policy loaded: %s (%s)\n", mpc->mpc_fullname,
mpc->mpc_name);
@ -505,6 +526,7 @@ mac_policy_unregister(struct mac_policy_conf *mpc)
mac_policy_release_exclusive();
SDT_PROBE(mac, kernel, policy, unregister, mpc, 0, 0, 0, 0);
printf("Security policy unload: %s (%s)\n", mpc->mpc_fullname,
mpc->mpc_name);
@ -530,6 +552,7 @@ mac_policy_modevent(module_t mod, int type, void *data)
}
#endif
SDT_PROBE(mac, kernel, policy, modevent, type, mpc, 0, 0, 0);
switch (type) {
case MOD_LOAD:
if (mpc->mpc_loadtime_flags & MPC_LOADTIME_FLAG_NOTLATE &&