Allow MAC policy modules to control access to audit configuration system

calls.  Add MAC Framework entry points and MAC policy entry points for
audit(), auditctl(), auditon(), setaudit(), aud setauid().

MAC Framework entry points are only added for audit system calls where
additional argument context may be useful for policy decision-making; other
audit system calls without arguments may be controlled via the priv(9)
entry points.

Update various policy modules to implement audit-related checks, and in
some cases, other missing system-related checks.

Obtained from:	TrustedBSD Project
Sponsored by:	SPARTA, Inc.

1 files changed, 45 insertions, 4 deletions

diff --git a/sys/security/mac_stub/mac_stub.c b/sys/security/mac_stub/mac_stub.c
index e80da0402..9e66145 100644
--- a/sys/security/mac_stub/mac_stub.c
+++ b/sys/security/mac_stub/mac_stub.c
@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 1999-2002 Robert N. M. Watson
+ * Copyright (c) 1999-2002, 2007 Robert N. M. Watson
  * Copyright (c) 2001-2005 McAfee, Inc.
  * Copyright (c) 2005 SPARTA, Inc.
  * All rights reserved.
@@ -920,6 +920,20 @@ stub_check_proc_wait(struct ucred *cred, struct proc *proc)
 }
 
 static int
+stub_check_proc_setaudit(struct ucred *cred, struct auditinfo *ai)
+{
+
+	return (0);
+}
+
+static int
+stub_check_proc_setauid(struct ucred *cred, uid_t auid)
+{
+
+	return (0);
+}
+
+static int
 stub_check_proc_setuid(struct ucred *cred, uid_t uid)
 {
 
@@ -1096,6 +1110,28 @@ stub_check_system_acct(struct ucred *cred, struct vnode *vp,
 }
 
 static int
+stub_check_system_audit(struct ucred *cred, void *record, int length)
+{
+
+	return (0);
+}
+
+static int
+stub_check_system_auditctl(struct ucred *cred, struct vnode *vp,
+    struct label *vlabel)
+{
+
+	return (0);
+}
+
+static int
+stub_check_system_auditon(struct ucred *cred, int cmd)
+{
+
+	return (0);
+}
+
+static int
 stub_check_system_nfsd(struct ucred *cred)
 {
 
@@ -1117,7 +1153,7 @@ stub_check_system_settime(struct ucred *cred)
 }
 
 static int
-stub_check_system_swapon(struct ucred *cred, struct vnode *vp,
+stub_check_system_swapoff(struct ucred *cred, struct vnode *vp,
     struct label *label)
 {
 
@@ -1125,7 +1161,7 @@ stub_check_system_swapon(struct ucred *cred, struct vnode *vp,
 }
 
 static int
-stub_check_system_swapoff(struct ucred *cred, struct vnode *vp,
+stub_check_system_swapon(struct ucred *cred, struct vnode *vp,
     struct label *label)
 {
 
@@ -1576,6 +1612,8 @@ static struct mac_policy_ops mac_stub_ops =
 	.mpo_check_posix_sem_wait = stub_check_posix_sem_wait,
 	.mpo_check_proc_debug = stub_check_proc_debug,
 	.mpo_check_proc_sched = stub_check_proc_sched,
+	.mpo_check_proc_setaudit = stub_check_proc_setaudit,
+	.mpo_check_proc_setauid = stub_check_proc_setauid,
 	.mpo_check_proc_setuid = stub_check_proc_setuid,
 	.mpo_check_proc_seteuid = stub_check_proc_seteuid,
 	.mpo_check_proc_setgid = stub_check_proc_setgid,
@@ -1601,11 +1639,14 @@ static struct mac_policy_ops mac_stub_ops =
 	.mpo_check_socket_visible = stub_check_socket_visible,
 	.mpo_check_sysarch_ioperm = stub_check_sysarch_ioperm,
 	.mpo_check_system_acct = stub_check_system_acct,
+	.mpo_check_system_audit = stub_check_system_audit,
+	.mpo_check_system_auditctl = stub_check_system_auditctl,
+	.mpo_check_system_auditon = stub_check_system_auditon,
 	.mpo_check_system_nfsd = stub_check_system_nfsd,
 	.mpo_check_system_reboot = stub_check_system_reboot,
 	.mpo_check_system_settime = stub_check_system_settime,
-	.mpo_check_system_swapon = stub_check_system_swapon,
 	.mpo_check_system_swapoff = stub_check_system_swapoff,
+	.mpo_check_system_swapon = stub_check_system_swapon,
 	.mpo_check_system_sysctl = stub_check_system_sysctl,
 	.mpo_check_vnode_access = stub_check_vnode_access,
 	.mpo_check_vnode_chdir = stub_check_vnode_chdir,