1 /* audit -- definition of audit_context structure and supporting types
2 *
3 * Copyright 2003-2004 Red Hat, Inc.
4 * Copyright 2005 Hewlett-Packard Development Company, L.P.
5 * Copyright 2005 IBM Corporation
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 #include <linux/mutex.h>
23 #include <linux/fs.h>
24 #include <linux/audit.h>
25
26 /* 0 = no checking
27 1 = put_count checking
28 2 = verbose put_count checking
29 */
30 #define AUDIT_DEBUG 0
31
32 /* At task start time, the audit_state is set in the audit_context using
33 a per-task filter. At syscall entry, the audit_state is augmented by
34 the syscall filter. */
35 enum audit_state {
36 AUDIT_DISABLED, /* Do not create per-task audit_context.
37 * No syscall-specific audit records can
38 * be generated. */
39 AUDIT_SETUP_CONTEXT, /* Create the per-task audit_context,
40 * but don't necessarily fill it in at
41 * syscall entry time (i.e., filter
42 * instead). */
43 AUDIT_BUILD_CONTEXT, /* Create the per-task audit_context,
44 * and always fill it in at syscall
45 * entry time. This makes a full
46 * syscall record available if some
47 * other part of the kernel decides it
48 * should be recorded. */
49 AUDIT_RECORD_CONTEXT /* Create the per-task audit_context,
50 * always fill it in at syscall entry
51 * time, and always write out the audit
52 * record at syscall exit time. */
53 };
54
55 /* Rule lists */
56 struct audit_field {
57 u32 type;
58 u32 val;
59 u32 op;
60 char *se_str;
61 struct selinux_audit_rule *se_rule;
62 };
63
64 struct audit_krule {
65 int vers_ops;
66 u32 flags;
67 u32 listnr;
68 u32 action;
69 u32 mask[AUDIT_BITMASK_SIZE];
70 u32 buflen; /* for data alloc on list rules */
71 u32 field_count;
72 struct audit_field *fields;
73 };
74
75 struct audit_entry {
76 struct list_head list;
77 struct rcu_head rcu;
78 struct audit_krule rule;
79 };
80
81
82 extern int audit_pid;
83 extern int audit_comparator(const u32 left, const u32 op, const u32 right);
84
85 extern void audit_send_reply(int pid, int seq, int type,
86 int done, int multi,
87 void *payload, int size);
88 extern void audit_log_lost(const char *message);
89 extern void audit_panic(const char *message);
90 extern struct mutex audit_netlink_mutex;
91
92 extern int selinux_audit_rule_update(void);
93
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