freebsd-dev/sys/security/mac/mac_audit.c
Attilio Rao 54366c0bd7 - For kernel compiled only with KDTRACE_HOOKS and not any lock debugging
option, unbreak the lock tracing release semantic by embedding
  calls to LOCKSTAT_PROFILE_RELEASE_LOCK() direclty in the inlined
  version of the releasing functions for mutex, rwlock and sxlock.
  Failing to do so skips the lockstat_probe_func invokation for
  unlocking.
- As part of the LOCKSTAT support is inlined in mutex operation, for
  kernel compiled without lock debugging options, potentially every
  consumer must be compiled including opt_kdtrace.h.
  Fix this by moving KDTRACE_HOOKS into opt_global.h and remove the
  dependency by opt_kdtrace.h for all files, as now only KDTRACE_FRAMES
  is linked there and it is only used as a compile-time stub [0].

[0] immediately shows some new bug as DTRACE-derived support for debug
in sfxge is broken and it was never really tested.  As it was not
including correctly opt_kdtrace.h before it was never enabled so it
was kept broken for a while.  Fix this by using a protection stub,
leaving sfxge driver authors the responsibility for fixing it
appropriately [1].

Sponsored by:	EMC / Isilon storage division
Discussed with:	rstone
[0] Reported by:	rstone
[1] Discussed with:	philip
2013-11-25 07:38:45 +00:00

144 lines
4.3 KiB
C

/*-
* Copyright (c) 1999-2002, 2009 Robert N. M. Watson
* Copyright (c) 2001 Ilmar S. Habibulin
* Copyright (c) 2001-2004 Networks Associates Technology, Inc.
* Copyright (c) 2006 SPARTA, Inc.
*
* This software was developed by Robert Watson and Ilmar Habibulin for the
* TrustedBSD Project.
*
* This software was developed for the FreeBSD Project in part by Network
* Associates Laboratories, the Security Research Division of Network
* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"),
* as part of the DARPA CHATS research program.
*
* This software was enhanced by SPARTA ISSO under SPAWAR contract
* N66001-04-C-6019 ("SEFOS").
*
* This software was developed at the University of Cambridge Computer
* Laboratory with support from a grant from Google, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/queue.h>
#include <sys/sdt.h>
#include <sys/vnode.h>
#include <security/audit/audit.h>
#include <security/mac/mac_framework.h>
#include <security/mac/mac_internal.h>
#include <security/mac/mac_policy.h>
MAC_CHECK_PROBE_DEFINE2(cred_check_setaudit, "struct ucred *",
"struct auditinfo *");
int
mac_cred_check_setaudit(struct ucred *cred, struct auditinfo *ai)
{
int error;
MAC_POLICY_CHECK_NOSLEEP(cred_check_setaudit, cred, ai);
MAC_CHECK_PROBE2(cred_check_setaudit, error, cred, ai);
return (error);
}
MAC_CHECK_PROBE_DEFINE2(cred_check_setaudit_addr, "struct ucred *",
"struct auditinfo_addr *");
int
mac_cred_check_setaudit_addr(struct ucred *cred, struct auditinfo_addr *aia)
{
int error;
MAC_POLICY_CHECK_NOSLEEP(cred_check_setaudit_addr, cred, aia);
MAC_CHECK_PROBE2(cred_check_setaudit_addr, error, cred, aia);
return (error);
}
MAC_CHECK_PROBE_DEFINE2(cred_check_setauid, "struct ucred *", "uid_t");
int
mac_cred_check_setauid(struct ucred *cred, uid_t auid)
{
int error;
MAC_POLICY_CHECK_NOSLEEP(cred_check_setauid, cred, auid);
MAC_CHECK_PROBE2(cred_check_setauid, error, cred, auid);
return (error);
}
MAC_CHECK_PROBE_DEFINE3(system_check_audit, "struct ucred *", "void *",
"int");
int
mac_system_check_audit(struct ucred *cred, void *record, int length)
{
int error;
MAC_POLICY_CHECK_NOSLEEP(system_check_audit, cred, record, length);
MAC_CHECK_PROBE3(system_check_audit, error, cred, record, length);
return (error);
}
MAC_CHECK_PROBE_DEFINE2(system_check_auditctl, "struct ucred *",
"struct vnode *");
int
mac_system_check_auditctl(struct ucred *cred, struct vnode *vp)
{
int error;
struct label *vl;
ASSERT_VOP_LOCKED(vp, "mac_system_check_auditctl");
vl = (vp != NULL) ? vp->v_label : NULL;
MAC_POLICY_CHECK(system_check_auditctl, cred, vp, vl);
MAC_CHECK_PROBE2(system_check_auditctl, error, cred, vp);
return (error);
}
MAC_CHECK_PROBE_DEFINE2(system_check_auditon, "struct ucred *", "int");
int
mac_system_check_auditon(struct ucred *cred, int cmd)
{
int error;
MAC_POLICY_CHECK_NOSLEEP(system_check_auditon, cred, cmd);
MAC_CHECK_PROBE2(system_check_auditon, error, cred, cmd);
return (error);
}