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;