summaryrefslogtreecommitdiffstats
path: root/sys/bsm/audit.h
blob: 24cc583984cb0596267db2cd8edaa8c82a07b339 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
/*-
 * Copyright (c) 2005 Apple Inc.
 * All rights reserved.
 *
 * 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.
 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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.
 *
 * P4: //depot/projects/trustedbsd/openbsm/sys/bsm/audit.h#5
 * $FreeBSD$
 */

#ifndef _BSM_AUDIT_H
#define	_BSM_AUDIT_H

#ifdef	__APPLE__
/* Temporary until rdar://problem/6133383 is resolved. */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/cdefs.h>
#include <sys/queue.h>
#endif /* __APPLE__ */

#define	AUDIT_RECORD_MAGIC	0x828a0f1b
#define	MAX_AUDIT_RECORDS	20
#define	MAXAUDITDATA		(0x8000 - 1)
#define	MAX_AUDIT_RECORD_SIZE	MAXAUDITDATA
#define	MIN_AUDIT_FILE_SIZE	(512 * 1024)

/*
 * Minimum noumber of free blocks on the filesystem containing the audit
 * log necessary to avoid a hard log rotation. DO NOT SET THIS VALUE TO 0
 * as the kernel does an unsigned compare, plus we want to leave a few blocks
 * free so userspace can terminate the log, etc.
 */
#define	AUDIT_HARD_LIMIT_FREE_BLOCKS	4

/*
 * Triggers for the audit daemon.
 */
#define	AUDIT_TRIGGER_MIN		1
#define	AUDIT_TRIGGER_LOW_SPACE		1	/* Below low watermark. */
#define	AUDIT_TRIGGER_ROTATE_KERNEL	2	/* Kernel requests rotate. */
#define	AUDIT_TRIGGER_READ_FILE		3	/* Re-read config file. */
#define	AUDIT_TRIGGER_CLOSE_AND_DIE	4	/* Terminate audit. */
#define	AUDIT_TRIGGER_NO_SPACE		5	/* Below min free space. */
#define	AUDIT_TRIGGER_ROTATE_USER	6	/* User requests rotate. */
#define	AUDIT_TRIGGER_INITIALIZE	7	/* User initialize of auditd. */
#define	AUDIT_TRIGGER_EXPIRE_TRAILS	8	/* User expiration of trails. */
#define	AUDIT_TRIGGER_MAX		8

/*
 * The special device filename (FreeBSD).
 */
#define	AUDITDEV_FILENAME	"audit"
#define	AUDIT_TRIGGER_FILE	("/dev/" AUDITDEV_FILENAME)

/*
 * Pre-defined audit IDs
 */
#define	AU_DEFAUDITID	(uid_t)(-1)
#define	AU_DEFAUDITSID	 0
#define	AU_ASSIGN_ASID	-1

/*
 * IPC types.
 */
#define	AT_IPC_MSG	((u_char)1)	/* Message IPC id. */
#define	AT_IPC_SEM	((u_char)2)	/* Semaphore IPC id. */
#define	AT_IPC_SHM	((u_char)3)	/* Shared mem IPC id. */

/*
 * Audit conditions.
 */
#define	AUC_UNSET		0
#define	AUC_AUDITING		1
#define	AUC_NOAUDIT		2
#define	AUC_DISABLED		-1

/*
 * auditon(2) commands.
 */
#define	A_GETPOLICY	2
#define	A_SETPOLICY	3
#define	A_GETKMASK	4
#define	A_SETKMASK	5
#define	A_GETQCTRL	6
#define	A_SETQCTRL	7
#define	A_GETCWD	8
#define	A_GETCAR	9
#define	A_GETSTAT	12
#define	A_SETSTAT	13
#define	A_SETUMASK	14
#define	A_SETSMASK	15
#define	A_GETCOND	20
#define	A_SETCOND	21
#define	A_GETCLASS	22
#define	A_SETCLASS	23
#define	A_GETPINFO	24
#define	A_SETPMASK	25
#define	A_SETFSIZE	26
#define	A_GETFSIZE	27
#define	A_GETPINFO_ADDR	28
#define	A_GETKAUDIT	29
#define	A_SETKAUDIT	30
#define	A_SENDTRIGGER	31
#define	A_GETSINFO_ADDR	32

/*
 * Audit policy controls.
 */
#define	AUDIT_CNT	0x0001
#define	AUDIT_AHLT	0x0002
#define	AUDIT_ARGV	0x0004
#define	AUDIT_ARGE	0x0008
#define	AUDIT_SEQ	0x0010
#define	AUDIT_WINDATA	0x0020
#define	AUDIT_USER	0x0040
#define	AUDIT_GROUP	0x0080
#define	AUDIT_TRAIL	0x0100
#define	AUDIT_PATH	0x0200
#define	AUDIT_SCNT	0x0400
#define	AUDIT_PUBLIC	0x0800
#define	AUDIT_ZONENAME	0x1000
#define	AUDIT_PERZONE	0x2000

/*
 * Default audit queue control parameters.
 */
#define	AQ_HIWATER	100
#define	AQ_MAXHIGH	10000
#define	AQ_LOWATER	10
#define	AQ_BUFSZ	MAXAUDITDATA
#define	AQ_MAXBUFSZ	1048576

/*
 * Default minimum percentage free space on file system.
 */
#define	AU_FS_MINFREE	20

/*
 * Type definitions used indicating the length of variable length addresses
 * in tokens containing addresses, such as header fields.
 */
#define	AU_IPv4		4
#define	AU_IPv6		16

__BEGIN_DECLS

typedef	uid_t		au_id_t;
typedef	pid_t		au_asid_t;
typedef	u_int16_t	au_event_t;
typedef	u_int16_t	au_emod_t;
typedef	u_int32_t	au_class_t;

struct au_tid {
	dev_t		port;
	u_int32_t	machine;
};
typedef	struct au_tid	au_tid_t;

struct au_tid_addr {
	dev_t		at_port;
	u_int32_t	at_type;
	u_int32_t	at_addr[4];
};
typedef	struct au_tid_addr	au_tid_addr_t;

struct au_mask {
	unsigned int    am_success;     /* Success bits. */
	unsigned int    am_failure;     /* Failure bits. */
};
typedef	struct au_mask	au_mask_t;

struct auditinfo {
	au_id_t		ai_auid;	/* Audit user ID. */
	au_mask_t	ai_mask;	/* Audit masks. */
	au_tid_t	ai_termid;	/* Terminal ID. */
	au_asid_t	ai_asid;	/* Audit session ID. */
};
typedef	struct auditinfo	auditinfo_t;

struct auditinfo_addr {
	au_id_t		ai_auid;	/* Audit user ID. */
	au_mask_t	ai_mask;	/* Audit masks. */
	au_tid_addr_t	ai_termid;	/* Terminal ID. */
	au_asid_t	ai_asid;	/* Audit session ID. */
	u_int64_t	ai_flags;	/* Audit session flags. */
};
typedef	struct auditinfo_addr	auditinfo_addr_t;

struct auditpinfo {
	pid_t		ap_pid;		/* ID of target process. */
	au_id_t		ap_auid;	/* Audit user ID. */
	au_mask_t	ap_mask;	/* Audit masks. */
	au_tid_t	ap_termid;	/* Terminal ID. */
	au_asid_t	ap_asid;	/* Audit session ID. */
	u_int64_t	ap_flags;	/* Audit session flags. */
};
typedef	struct auditpinfo	auditpinfo_t;

struct auditpinfo_addr {
	pid_t		ap_pid;		/* ID of target process. */
	au_id_t		ap_auid;	/* Audit user ID. */
	au_mask_t	ap_mask;	/* Audit masks. */
	au_tid_addr_t	ap_termid;	/* Terminal ID. */
	au_asid_t	ap_asid;	/* Audit session ID. */
};
typedef	struct auditpinfo_addr	auditpinfo_addr_t;

struct au_session {
	auditinfo_addr_t	*as_aia_p;	/* Ptr to full audit info. */
#define	as_asid			as_aia_p->ai_asid
#define	as_auid			as_aia_p->ai_auid
#define	as_termid		as_aia_p->ai_termid

	au_mask_t		 as_mask;	/* Process Audit Masks. */
};
typedef struct au_session       au_session_t;

/*
 * Contents of token_t are opaque outside of libbsm.
 */
typedef	struct au_token	token_t;

/*
 * Kernel audit queue control parameters.
 */
struct au_qctrl {
	size_t	aq_hiwater;
	size_t	aq_lowater;
	size_t	aq_bufsz;
	clock_t	aq_delay;
	int	aq_minfree;	/* Minimum filesystem percent free space. */
};
typedef	struct au_qctrl	au_qctrl_t;

/*
 * Structure for the audit statistics.
 */
struct audit_stat {
	unsigned int	as_version;
	unsigned int	as_numevent;
	int		as_generated;
	int		as_nonattrib;
	int		as_kernel;
	int		as_audit;
	int		as_auditctl;
	int		as_enqueue;
	int		as_written;
	int		as_wblocked;
	int		as_rblocked;
	int		as_dropped;
	int		as_totalsize;
	unsigned int	as_memused;
};
typedef	struct audit_stat	au_stat_t;

/*
 * Structure for the audit file statistics.
 */
struct audit_fstat {
	u_int64_t	af_filesz;
	u_int64_t	af_currsz;
};
typedef	struct audit_fstat	au_fstat_t;

/*
 * Audit to event class mapping.
 */
struct au_evclass_map {
	au_event_t	ec_number;
	au_class_t	ec_class;
};
typedef	struct au_evclass_map	au_evclass_map_t;

/*
 * Audit system calls.
 */
#if !defined(_KERNEL) && !defined(KERNEL)
int	audit(const void *, int);
int	auditon(int, void *, int);
int	auditctl(const char *);
int	getauid(au_id_t *);
int	setauid(const au_id_t *);
int	getaudit(struct auditinfo *);
int	setaudit(const struct auditinfo *);
int	getaudit_addr(struct auditinfo_addr *, int);
int	setaudit_addr(const struct auditinfo_addr *, int);
#endif /* defined(_KERNEL) || defined(KERNEL) */

__END_DECLS

#endif /* !_BSM_AUDIT_H */
OpenPOWER on IntegriCloud