1/*-
2 * Copyright (c) 1999-2009 Apple Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 *
| 1/*-
2 * Copyright (c) 1999-2009 Apple Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 *
|
29 * $FreeBSD: head/sys/security/audit/audit_private.h 195925 2009-07-28 21:39:58Z rwatson $
| 29 * $FreeBSD: head/sys/security/audit/audit_private.h 195926 2009-07-28 21:52:24Z rwatson $
|
30 */
31
32/*
33 * This include file contains function prototypes and type definitions used
34 * within the audit implementation.
35 */
36
37#ifndef _SECURITY_AUDIT_PRIVATE_H_
38#define _SECURITY_AUDIT_PRIVATE_H_
39
40#ifndef _KERNEL
41#error "no user-serviceable parts inside"
42#endif
43
44#include <sys/ipc.h>
45#include <sys/socket.h>
46#include <sys/ucred.h>
47
48#ifdef MALLOC_DECLARE
49MALLOC_DECLARE(M_AUDITBSM);
50MALLOC_DECLARE(M_AUDITDATA);
51MALLOC_DECLARE(M_AUDITPATH);
52MALLOC_DECLARE(M_AUDITTEXT);
53MALLOC_DECLARE(M_AUDITGIDSET);
54#endif
55
56/*
57 * Audit control variables that are usually set/read via system calls and
58 * used to control various aspects of auditing.
59 */
60extern struct au_qctrl audit_qctrl;
61extern struct audit_fstat audit_fstat;
62extern struct au_mask audit_nae_mask;
63extern int audit_panic_on_write_fail;
64extern int audit_fail_stop;
65extern int audit_argv;
66extern int audit_arge;
67
68/*
69 * Success/failure conditions for the conversion of a kernel audit record to
70 * BSM format.
71 */
72#define BSM_SUCCESS 0
73#define BSM_FAILURE 1
74#define BSM_NOAUDIT 2
75
76/*
77 * Defines for the kernel audit record k_ar_commit field. Flags are set to
78 * indicate what sort of record it is, and which preselection mechanism
79 * selected it.
80 */
81#define AR_COMMIT_KERNEL 0x00000001U
82#define AR_COMMIT_USER 0x00000010U
83
84#define AR_PRESELECT_TRAIL 0x00001000U
85#define AR_PRESELECT_PIPE 0x00002000U
86
87#define AR_PRESELECT_USER_TRAIL 0x00004000U
88#define AR_PRESELECT_USER_PIPE 0x00008000U
89
90/*
91 * Audit data is generated as a stream of struct audit_record structures,
92 * linked by struct kaudit_record, and contain storage for possible audit so
93 * that it will not need to be allocated during the processing of a system
94 * call, both improving efficiency and avoiding sleeping at untimely moments.
95 * This structure is converted to BSM format before being written to disk.
96 */
97struct vnode_au_info {
98 mode_t vn_mode;
99 uid_t vn_uid;
100 gid_t vn_gid;
101 dev_t vn_dev;
102 long vn_fsid;
103 long vn_fileid;
104 long vn_gen;
105};
106
107struct groupset {
108 gid_t *gidset;
109 u_int gidset_size;
110};
111
112struct socket_au_info {
113 int so_domain;
114 int so_type;
115 int so_protocol;
116 in_addr_t so_raddr; /* Remote address if INET socket. */
117 in_addr_t so_laddr; /* Local address if INET socket. */
118 u_short so_rport; /* Remote port. */
119 u_short so_lport; /* Local port. */
120};
121
122/*
123 * The following is used for A_OLDSETQCTRL and AU_OLDGETQCTRL and a 64-bit
124 * userland.
125 */
126struct au_qctrl64 {
127 u_int64_t aq64_hiwater;
128 u_int64_t aq64_lowater;
129 u_int64_t aq64_bufsz;
130 u_int64_t aq64_delay;
131 u_int64_t aq64_minfree;
132};
133typedef struct au_qctrl64 au_qctrl64_t;
134
135union auditon_udata {
136 char *au_path;
137 int au_cond;
138 int au_flags;
139 int au_policy;
140 int au_trigger;
141 int64_t au_cond64;
142 int64_t au_policy64;
143 au_evclass_map_t au_evclass;
144 au_mask_t au_mask;
145 auditinfo_t au_auinfo;
146 auditpinfo_t au_aupinfo;
147 auditpinfo_addr_t au_aupinfo_addr;
148 au_qctrl_t au_qctrl;
149 au_qctrl64_t au_qctrl64;
150 au_stat_t au_stat;
151 au_fstat_t au_fstat;
152 auditinfo_addr_t au_kau_info;
153};
154
155struct posix_ipc_perm {
156 uid_t pipc_uid;
157 gid_t pipc_gid;
158 mode_t pipc_mode;
159};
160
161struct audit_record {
162 /* Audit record header. */
163 u_int32_t ar_magic;
164 int ar_event;
165 int ar_retval; /* value returned to the process */
166 int ar_errno; /* return status of system call */
167 struct timespec ar_starttime;
168 struct timespec ar_endtime;
169 u_int64_t ar_valid_arg; /* Bitmask of valid arguments */
170
171 /* Audit subject information. */
172 struct xucred ar_subj_cred;
173 uid_t ar_subj_ruid;
174 gid_t ar_subj_rgid;
175 gid_t ar_subj_egid;
176 uid_t ar_subj_auid; /* Audit user ID */
177 pid_t ar_subj_asid; /* Audit session ID */
178 pid_t ar_subj_pid;
179 struct au_tid ar_subj_term;
180 struct au_tid_addr ar_subj_term_addr;
181 struct au_mask ar_subj_amask;
182
183 /* Operation arguments. */
184 uid_t ar_arg_euid;
185 uid_t ar_arg_ruid;
186 uid_t ar_arg_suid;
187 gid_t ar_arg_egid;
188 gid_t ar_arg_rgid;
189 gid_t ar_arg_sgid;
190 pid_t ar_arg_pid;
191 pid_t ar_arg_asid;
192 struct au_tid ar_arg_termid;
193 struct au_tid_addr ar_arg_termid_addr;
194 uid_t ar_arg_uid;
195 uid_t ar_arg_auid;
196 gid_t ar_arg_gid;
197 struct groupset ar_arg_groups;
198 int ar_arg_fd;
199 int ar_arg_atfd1;
200 int ar_arg_atfd2;
201 int ar_arg_fflags;
202 mode_t ar_arg_mode;
203 int ar_arg_dev;
204 long ar_arg_value;
205 void * ar_arg_addr;
206 int ar_arg_len;
207 int ar_arg_mask;
208 u_int ar_arg_signum;
209 char ar_arg_login[MAXLOGNAME];
210 int ar_arg_ctlname[CTL_MAXNAME];
211 struct socket_au_info ar_arg_sockinfo;
212 char *ar_arg_upath1;
213 char *ar_arg_upath2;
214 char *ar_arg_text;
215 struct au_mask ar_arg_amask;
216 struct vnode_au_info ar_arg_vnode1;
217 struct vnode_au_info ar_arg_vnode2;
218 int ar_arg_cmd;
219 int ar_arg_svipc_cmd;
220 struct ipc_perm ar_arg_svipc_perm;
221 int ar_arg_svipc_id;
222 void * ar_arg_svipc_addr;
223 struct posix_ipc_perm ar_arg_pipc_perm;
224 union auditon_udata ar_arg_auditon;
225 char *ar_arg_argv;
226 int ar_arg_argc;
227 char *ar_arg_envv;
228 int ar_arg_envc;
229 int ar_arg_exitstatus;
230 int ar_arg_exitretval;
231 struct sockaddr_storage ar_arg_sockaddr;
232};
233
234/*
235 * Arguments in the audit record are initially not defined; flags are set to
236 * indicate if they are present so they can be included in the audit log
237 * stream only if defined.
238 */
239#define ARG_IS_VALID(kar, arg) ((kar)->k_ar.ar_valid_arg & (arg))
240#define ARG_SET_VALID(kar, arg) do { \
241 (kar)->k_ar.ar_valid_arg |= (arg); \
242} while (0)
| 30 */
31
32/*
33 * This include file contains function prototypes and type definitions used
34 * within the audit implementation.
35 */
36
37#ifndef _SECURITY_AUDIT_PRIVATE_H_
38#define _SECURITY_AUDIT_PRIVATE_H_
39
40#ifndef _KERNEL
41#error "no user-serviceable parts inside"
42#endif
43
44#include <sys/ipc.h>
45#include <sys/socket.h>
46#include <sys/ucred.h>
47
48#ifdef MALLOC_DECLARE
49MALLOC_DECLARE(M_AUDITBSM);
50MALLOC_DECLARE(M_AUDITDATA);
51MALLOC_DECLARE(M_AUDITPATH);
52MALLOC_DECLARE(M_AUDITTEXT);
53MALLOC_DECLARE(M_AUDITGIDSET);
54#endif
55
56/*
57 * Audit control variables that are usually set/read via system calls and
58 * used to control various aspects of auditing.
59 */
60extern struct au_qctrl audit_qctrl;
61extern struct audit_fstat audit_fstat;
62extern struct au_mask audit_nae_mask;
63extern int audit_panic_on_write_fail;
64extern int audit_fail_stop;
65extern int audit_argv;
66extern int audit_arge;
67
68/*
69 * Success/failure conditions for the conversion of a kernel audit record to
70 * BSM format.
71 */
72#define BSM_SUCCESS 0
73#define BSM_FAILURE 1
74#define BSM_NOAUDIT 2
75
76/*
77 * Defines for the kernel audit record k_ar_commit field. Flags are set to
78 * indicate what sort of record it is, and which preselection mechanism
79 * selected it.
80 */
81#define AR_COMMIT_KERNEL 0x00000001U
82#define AR_COMMIT_USER 0x00000010U
83
84#define AR_PRESELECT_TRAIL 0x00001000U
85#define AR_PRESELECT_PIPE 0x00002000U
86
87#define AR_PRESELECT_USER_TRAIL 0x00004000U
88#define AR_PRESELECT_USER_PIPE 0x00008000U
89
90/*
91 * Audit data is generated as a stream of struct audit_record structures,
92 * linked by struct kaudit_record, and contain storage for possible audit so
93 * that it will not need to be allocated during the processing of a system
94 * call, both improving efficiency and avoiding sleeping at untimely moments.
95 * This structure is converted to BSM format before being written to disk.
96 */
97struct vnode_au_info {
98 mode_t vn_mode;
99 uid_t vn_uid;
100 gid_t vn_gid;
101 dev_t vn_dev;
102 long vn_fsid;
103 long vn_fileid;
104 long vn_gen;
105};
106
107struct groupset {
108 gid_t *gidset;
109 u_int gidset_size;
110};
111
112struct socket_au_info {
113 int so_domain;
114 int so_type;
115 int so_protocol;
116 in_addr_t so_raddr; /* Remote address if INET socket. */
117 in_addr_t so_laddr; /* Local address if INET socket. */
118 u_short so_rport; /* Remote port. */
119 u_short so_lport; /* Local port. */
120};
121
122/*
123 * The following is used for A_OLDSETQCTRL and AU_OLDGETQCTRL and a 64-bit
124 * userland.
125 */
126struct au_qctrl64 {
127 u_int64_t aq64_hiwater;
128 u_int64_t aq64_lowater;
129 u_int64_t aq64_bufsz;
130 u_int64_t aq64_delay;
131 u_int64_t aq64_minfree;
132};
133typedef struct au_qctrl64 au_qctrl64_t;
134
135union auditon_udata {
136 char *au_path;
137 int au_cond;
138 int au_flags;
139 int au_policy;
140 int au_trigger;
141 int64_t au_cond64;
142 int64_t au_policy64;
143 au_evclass_map_t au_evclass;
144 au_mask_t au_mask;
145 auditinfo_t au_auinfo;
146 auditpinfo_t au_aupinfo;
147 auditpinfo_addr_t au_aupinfo_addr;
148 au_qctrl_t au_qctrl;
149 au_qctrl64_t au_qctrl64;
150 au_stat_t au_stat;
151 au_fstat_t au_fstat;
152 auditinfo_addr_t au_kau_info;
153};
154
155struct posix_ipc_perm {
156 uid_t pipc_uid;
157 gid_t pipc_gid;
158 mode_t pipc_mode;
159};
160
161struct audit_record {
162 /* Audit record header. */
163 u_int32_t ar_magic;
164 int ar_event;
165 int ar_retval; /* value returned to the process */
166 int ar_errno; /* return status of system call */
167 struct timespec ar_starttime;
168 struct timespec ar_endtime;
169 u_int64_t ar_valid_arg; /* Bitmask of valid arguments */
170
171 /* Audit subject information. */
172 struct xucred ar_subj_cred;
173 uid_t ar_subj_ruid;
174 gid_t ar_subj_rgid;
175 gid_t ar_subj_egid;
176 uid_t ar_subj_auid; /* Audit user ID */
177 pid_t ar_subj_asid; /* Audit session ID */
178 pid_t ar_subj_pid;
179 struct au_tid ar_subj_term;
180 struct au_tid_addr ar_subj_term_addr;
181 struct au_mask ar_subj_amask;
182
183 /* Operation arguments. */
184 uid_t ar_arg_euid;
185 uid_t ar_arg_ruid;
186 uid_t ar_arg_suid;
187 gid_t ar_arg_egid;
188 gid_t ar_arg_rgid;
189 gid_t ar_arg_sgid;
190 pid_t ar_arg_pid;
191 pid_t ar_arg_asid;
192 struct au_tid ar_arg_termid;
193 struct au_tid_addr ar_arg_termid_addr;
194 uid_t ar_arg_uid;
195 uid_t ar_arg_auid;
196 gid_t ar_arg_gid;
197 struct groupset ar_arg_groups;
198 int ar_arg_fd;
199 int ar_arg_atfd1;
200 int ar_arg_atfd2;
201 int ar_arg_fflags;
202 mode_t ar_arg_mode;
203 int ar_arg_dev;
204 long ar_arg_value;
205 void * ar_arg_addr;
206 int ar_arg_len;
207 int ar_arg_mask;
208 u_int ar_arg_signum;
209 char ar_arg_login[MAXLOGNAME];
210 int ar_arg_ctlname[CTL_MAXNAME];
211 struct socket_au_info ar_arg_sockinfo;
212 char *ar_arg_upath1;
213 char *ar_arg_upath2;
214 char *ar_arg_text;
215 struct au_mask ar_arg_amask;
216 struct vnode_au_info ar_arg_vnode1;
217 struct vnode_au_info ar_arg_vnode2;
218 int ar_arg_cmd;
219 int ar_arg_svipc_cmd;
220 struct ipc_perm ar_arg_svipc_perm;
221 int ar_arg_svipc_id;
222 void * ar_arg_svipc_addr;
223 struct posix_ipc_perm ar_arg_pipc_perm;
224 union auditon_udata ar_arg_auditon;
225 char *ar_arg_argv;
226 int ar_arg_argc;
227 char *ar_arg_envv;
228 int ar_arg_envc;
229 int ar_arg_exitstatus;
230 int ar_arg_exitretval;
231 struct sockaddr_storage ar_arg_sockaddr;
232};
233
234/*
235 * Arguments in the audit record are initially not defined; flags are set to
236 * indicate if they are present so they can be included in the audit log
237 * stream only if defined.
238 */
239#define ARG_IS_VALID(kar, arg) ((kar)->k_ar.ar_valid_arg & (arg))
240#define ARG_SET_VALID(kar, arg) do { \
241 (kar)->k_ar.ar_valid_arg |= (arg); \
242} while (0)
|
| 243#define ARG_CLEAR_VALID(kar, arg) do { \
244 (kar)->k_ar.ar_valid_arg &= ~(arg); \
245} while (0)
|
243
244/*
245 * In-kernel version of audit record; the basic record plus queue meta-data.
246 * This record can also have a pointer set to some opaque data that will be
247 * passed through to the audit writing mechanism.
248 */
249struct kaudit_record {
250 struct audit_record k_ar;
251 u_int32_t k_ar_commit;
252 void *k_udata; /* User data. */
253 u_int k_ulen; /* User data length. */
254 struct uthread *k_uthread; /* Audited thread. */
255 TAILQ_ENTRY(kaudit_record) k_q;
256};
257TAILQ_HEAD(kaudit_queue, kaudit_record);
258
259/*
260 * Functions to manage the allocation, release, and commit of kernel audit
261 * records.
262 */
263void audit_abort(struct kaudit_record *ar);
264void audit_commit(struct kaudit_record *ar, int error,
265 int retval);
266struct kaudit_record *audit_new(int event, struct thread *td);
267
268/*
269 * Functions relating to the conversion of internal kernel audit records to
270 * the BSM file format.
271 */
272struct au_record;
273int kaudit_to_bsm(struct kaudit_record *kar, struct au_record **pau);
274int bsm_rec_verify(void *rec);
275
276/*
277 * Kernel versions of the libbsm audit record functions.
278 */
279void kau_free(struct au_record *rec);
280void kau_init(void);
281
282/*
283 * Return values for pre-selection and post-selection decisions.
284 */
285#define AU_PRS_SUCCESS 1
286#define AU_PRS_FAILURE 2
287#define AU_PRS_BOTH (AU_PRS_SUCCESS|AU_PRS_FAILURE)
288
289/*
290 * Data structures relating to the kernel audit queue. Ideally, these might
291 * be abstracted so that only accessor methods are exposed.
292 */
293extern struct mtx audit_mtx;
294extern struct cv audit_watermark_cv;
295extern struct cv audit_worker_cv;
296extern struct kaudit_queue audit_q;
297extern int audit_q_len;
298extern int audit_pre_q_len;
299extern int audit_in_failure;
300
301/*
302 * Flags to use on audit files when opening and closing.
303 */
304#define AUDIT_OPEN_FLAGS (FWRITE | O_APPEND)
305#define AUDIT_CLOSE_FLAGS (FWRITE | O_APPEND)
306
307#include <sys/fcntl.h>
308#include <sys/kernel.h>
309#include <sys/malloc.h>
310
311/*
312 * Some of the BSM tokenizer functions take different parameters in the
313 * kernel implementations in order to save the copying of large kernel data
314 * structures. The prototypes of these functions are declared here.
315 */
316token_t *kau_to_socket(struct socket_au_info *soi);
317
318/*
319 * audit_klib prototypes
320 */
321int au_preselect(au_event_t event, au_class_t class,
322 au_mask_t *mask_p, int sorf);
323void au_evclassmap_init(void);
324void au_evclassmap_insert(au_event_t event, au_class_t class);
325au_class_t au_event_class(au_event_t event);
326au_event_t audit_ctlname_to_sysctlevent(int name[], uint64_t valid_arg);
327au_event_t audit_flags_and_error_to_openevent(int oflags, int error);
328au_event_t audit_flags_and_error_to_openatevent(int oflags, int error);
329au_event_t audit_msgctl_to_event(int cmd);
330au_event_t audit_semctl_to_event(int cmr);
331void audit_canon_path(struct thread *td, char *path, char *cpath);
332au_event_t auditon_command_event(int cmd);
333
334/*
335 * Audit trigger events notify user space of kernel audit conditions
336 * asynchronously.
337 */
338void audit_trigger_init(void);
339int audit_send_trigger(unsigned int trigger);
340
341/*
342 * Accessor functions to manage global audit state.
343 */
344void audit_set_kinfo(struct auditinfo_addr *);
345void audit_get_kinfo(struct auditinfo_addr *);
346
347/*
348 * General audit related functions.
349 */
350struct kaudit_record *currecord(void);
351void audit_free(struct kaudit_record *ar);
352void audit_shutdown(void *arg, int howto);
353void audit_rotate_vnode(struct ucred *cred,
354 struct vnode *vp);
355void audit_worker_init(void);
356
357/*
358 * Audit pipe functions.
359 */
360int audit_pipe_preselect(au_id_t auid, au_event_t event,
361 au_class_t class, int sorf, int trail_select);
362void audit_pipe_submit(au_id_t auid, au_event_t event, au_class_t class,
363 int sorf, int trail_select, void *record, u_int record_len);
364void audit_pipe_submit_user(void *record, u_int record_len);
365
366#endif /* ! _SECURITY_AUDIT_PRIVATE_H_ */
| 246
247/*
248 * In-kernel version of audit record; the basic record plus queue meta-data.
249 * This record can also have a pointer set to some opaque data that will be
250 * passed through to the audit writing mechanism.
251 */
252struct kaudit_record {
253 struct audit_record k_ar;
254 u_int32_t k_ar_commit;
255 void *k_udata; /* User data. */
256 u_int k_ulen; /* User data length. */
257 struct uthread *k_uthread; /* Audited thread. */
258 TAILQ_ENTRY(kaudit_record) k_q;
259};
260TAILQ_HEAD(kaudit_queue, kaudit_record);
261
262/*
263 * Functions to manage the allocation, release, and commit of kernel audit
264 * records.
265 */
266void audit_abort(struct kaudit_record *ar);
267void audit_commit(struct kaudit_record *ar, int error,
268 int retval);
269struct kaudit_record *audit_new(int event, struct thread *td);
270
271/*
272 * Functions relating to the conversion of internal kernel audit records to
273 * the BSM file format.
274 */
275struct au_record;
276int kaudit_to_bsm(struct kaudit_record *kar, struct au_record **pau);
277int bsm_rec_verify(void *rec);
278
279/*
280 * Kernel versions of the libbsm audit record functions.
281 */
282void kau_free(struct au_record *rec);
283void kau_init(void);
284
285/*
286 * Return values for pre-selection and post-selection decisions.
287 */
288#define AU_PRS_SUCCESS 1
289#define AU_PRS_FAILURE 2
290#define AU_PRS_BOTH (AU_PRS_SUCCESS|AU_PRS_FAILURE)
291
292/*
293 * Data structures relating to the kernel audit queue. Ideally, these might
294 * be abstracted so that only accessor methods are exposed.
295 */
296extern struct mtx audit_mtx;
297extern struct cv audit_watermark_cv;
298extern struct cv audit_worker_cv;
299extern struct kaudit_queue audit_q;
300extern int audit_q_len;
301extern int audit_pre_q_len;
302extern int audit_in_failure;
303
304/*
305 * Flags to use on audit files when opening and closing.
306 */
307#define AUDIT_OPEN_FLAGS (FWRITE | O_APPEND)
308#define AUDIT_CLOSE_FLAGS (FWRITE | O_APPEND)
309
310#include <sys/fcntl.h>
311#include <sys/kernel.h>
312#include <sys/malloc.h>
313
314/*
315 * Some of the BSM tokenizer functions take different parameters in the
316 * kernel implementations in order to save the copying of large kernel data
317 * structures. The prototypes of these functions are declared here.
318 */
319token_t *kau_to_socket(struct socket_au_info *soi);
320
321/*
322 * audit_klib prototypes
323 */
324int au_preselect(au_event_t event, au_class_t class,
325 au_mask_t *mask_p, int sorf);
326void au_evclassmap_init(void);
327void au_evclassmap_insert(au_event_t event, au_class_t class);
328au_class_t au_event_class(au_event_t event);
329au_event_t audit_ctlname_to_sysctlevent(int name[], uint64_t valid_arg);
330au_event_t audit_flags_and_error_to_openevent(int oflags, int error);
331au_event_t audit_flags_and_error_to_openatevent(int oflags, int error);
332au_event_t audit_msgctl_to_event(int cmd);
333au_event_t audit_semctl_to_event(int cmr);
334void audit_canon_path(struct thread *td, char *path, char *cpath);
335au_event_t auditon_command_event(int cmd);
336
337/*
338 * Audit trigger events notify user space of kernel audit conditions
339 * asynchronously.
340 */
341void audit_trigger_init(void);
342int audit_send_trigger(unsigned int trigger);
343
344/*
345 * Accessor functions to manage global audit state.
346 */
347void audit_set_kinfo(struct auditinfo_addr *);
348void audit_get_kinfo(struct auditinfo_addr *);
349
350/*
351 * General audit related functions.
352 */
353struct kaudit_record *currecord(void);
354void audit_free(struct kaudit_record *ar);
355void audit_shutdown(void *arg, int howto);
356void audit_rotate_vnode(struct ucred *cred,
357 struct vnode *vp);
358void audit_worker_init(void);
359
360/*
361 * Audit pipe functions.
362 */
363int audit_pipe_preselect(au_id_t auid, au_event_t event,
364 au_class_t class, int sorf, int trail_select);
365void audit_pipe_submit(au_id_t auid, au_event_t event, au_class_t class,
366 int sorf, int trail_select, void *record, u_int record_len);
367void audit_pipe_submit_user(void *record, u_int record_len);
368
369#endif /* ! _SECURITY_AUDIT_PRIVATE_H_ */
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