2 * AppArmor security module
4 * This file contains AppArmor auditing functions
6 * Copyright (C) 1998-2008 Novell/SUSE
7 * Copyright 2009-2010 Canonical Ltd.
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation, version 2 of the
15 #include <linux/audit.h>
16 #include <linux/socket.h>
18 #include "include/apparmor.h"
19 #include "include/audit.h"
20 #include "include/policy.h"
22 const char *const op_table
[] = {
76 const char *const audit_mode_names
[] = {
84 static const char *const aa_audit_type
[] = {
96 * Currently AppArmor auditing is fed straight into the audit framework.
99 * netlink interface for complain mode
100 * user auditing, - send user auditing to netlink interface
101 * system control of whether user audit messages go to system log
105 * audit_base - core AppArmor function.
106 * @ab: audit buffer to fill (NOT NULL)
107 * @ca: audit structure containing data to audit (NOT NULL)
109 * Record common AppArmor audit data from @sa
111 static void audit_pre(struct audit_buffer
*ab
, void *ca
)
113 struct common_audit_data
*sa
= ca
;
114 struct task_struct
*tsk
= sa
->tsk
? sa
->tsk
: current
;
116 if (aa_g_audit_header
) {
117 audit_log_format(ab
, "apparmor=");
118 audit_log_string(ab
, aa_audit_type
[sa
->aad
->type
]);
122 audit_log_format(ab
, " operation=");
123 audit_log_string(ab
, op_table
[sa
->aad
->op
]);
127 audit_log_format(ab
, " info=");
128 audit_log_string(ab
, sa
->aad
->info
);
130 audit_log_format(ab
, " error=%d", sa
->aad
->error
);
133 if (sa
->aad
->profile
) {
134 struct aa_profile
*profile
= sa
->aad
->profile
;
137 pid
= rcu_dereference(tsk
->real_parent
)->pid
;
139 audit_log_format(ab
, " parent=%d", pid
);
140 if (profile
->ns
!= root_ns
) {
141 audit_log_format(ab
, " namespace=");
142 audit_log_untrustedstring(ab
, profile
->ns
->base
.hname
);
144 audit_log_format(ab
, " profile=");
145 audit_log_untrustedstring(ab
, profile
->base
.hname
);
149 audit_log_format(ab
, " name=");
150 audit_log_untrustedstring(ab
, sa
->aad
->name
);
155 * aa_audit_msg - Log a message to the audit subsystem
156 * @sa: audit event structure (NOT NULL)
157 * @cb: optional callback fn for type specific fields (MAYBE NULL)
159 void aa_audit_msg(int type
, struct common_audit_data
*sa
,
160 void (*cb
) (struct audit_buffer
*, void *))
162 sa
->aad
->type
= type
;
163 common_lsm_audit(sa
, audit_pre
, cb
);
167 * aa_audit - Log a profile based audit event to the audit subsystem
168 * @type: audit type for the message
169 * @profile: profile to check against (NOT NULL)
170 * @gfp: allocation flags to use
171 * @sa: audit event (NOT NULL)
172 * @cb: optional callback fn for type specific fields (MAYBE NULL)
174 * Handle default message switching based off of audit mode flags
176 * Returns: error on failure
178 int aa_audit(int type
, struct aa_profile
*profile
, gfp_t gfp
,
179 struct common_audit_data
*sa
,
180 void (*cb
) (struct audit_buffer
*, void *))
184 if (type
== AUDIT_APPARMOR_AUTO
) {
185 if (likely(!sa
->aad
->error
)) {
186 if (AUDIT_MODE(profile
) != AUDIT_ALL
)
188 type
= AUDIT_APPARMOR_AUDIT
;
189 } else if (COMPLAIN_MODE(profile
))
190 type
= AUDIT_APPARMOR_ALLOWED
;
192 type
= AUDIT_APPARMOR_DENIED
;
194 if (AUDIT_MODE(profile
) == AUDIT_QUIET
||
195 (type
== AUDIT_APPARMOR_DENIED
&&
196 AUDIT_MODE(profile
) == AUDIT_QUIET
))
197 return sa
->aad
->error
;
199 if (KILL_MODE(profile
) && type
== AUDIT_APPARMOR_DENIED
)
200 type
= AUDIT_APPARMOR_KILL
;
202 if (!unconfined(profile
))
203 sa
->aad
->profile
= profile
;
205 aa_audit_msg(type
, sa
, cb
);
207 if (sa
->aad
->type
== AUDIT_APPARMOR_KILL
)
208 (void)send_sig_info(SIGKILL
, NULL
, sa
->tsk
? sa
->tsk
: current
);
210 if (sa
->aad
->type
== AUDIT_APPARMOR_ALLOWED
)
211 return complain_error(sa
->aad
->error
);
213 return sa
->aad
->error
;
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