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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/fs.h>
23#include <linux/audit.h>
24#include <linux/skbuff.h>
25#include <uapi/linux/mqueue.h>
26#include <linux/tty.h>
27
28/* AUDIT_NAMES is the number of slots we reserve in the audit_context
29 * for saving names from getname(). If we get more names we will allocate
30 * a name dynamically and also add those to the list anchored by names_list. */
31#define AUDIT_NAMES 5
32
33/* At task start time, the audit_state is set in the audit_context using
34 a per-task filter. At syscall entry, the audit_state is augmented by
35 the syscall filter. */
36enum audit_state {
37 AUDIT_DISABLED, /* Do not create per-task audit_context.
38 * No syscall-specific audit records can
39 * be generated. */
40 AUDIT_BUILD_CONTEXT, /* Create the per-task audit_context,
41 * and fill it in at syscall
42 * entry time. This makes a full
43 * syscall record available if some
44 * other part of the kernel decides it
45 * should be recorded. */
46 AUDIT_RECORD_CONTEXT /* Create the per-task audit_context,
47 * always fill it in at syscall entry
48 * time, and always write out the audit
49 * record at syscall exit time. */
50};
51
52/* Rule lists */
53struct audit_watch;
54struct audit_fsnotify_mark;
55struct audit_tree;
56struct audit_chunk;
57
58struct audit_entry {
59 struct list_head list;
60 struct rcu_head rcu;
61 struct audit_krule rule;
62};
63
64struct audit_cap_data {
65 kernel_cap_t permitted;
66 kernel_cap_t inheritable;
67 union {
68 unsigned int fE; /* effective bit of file cap */
69 kernel_cap_t effective; /* effective set of process */
70 };
71};
72
73/* When fs/namei.c:getname() is called, we store the pointer in name and bump
74 * the refcnt in the associated filename struct.
75 *
76 * Further, in fs/namei.c:path_lookup() we store the inode and device.
77 */
78struct audit_names {
79 struct list_head list; /* audit_context->names_list */
80
81 struct filename *name;
82 int name_len; /* number of chars to log */
83 bool hidden; /* don't log this record */
84
85 unsigned long ino;
86 dev_t dev;
87 umode_t mode;
88 kuid_t uid;
89 kgid_t gid;
90 dev_t rdev;
91 u32 osid;
92 struct audit_cap_data fcap;
93 unsigned int fcap_ver;
94 unsigned char type; /* record type */
95 /*
96 * This was an allocated audit_names and not from the array of
97 * names allocated in the task audit context. Thus this name
98 * should be freed on syscall exit.
99 */
100 bool should_free;
101};
102
103struct audit_proctitle {
104 int len; /* length of the cmdline field. */
105 char *value; /* the cmdline field */
106};
107
108/* The per-task audit context. */
109struct audit_context {
110 int dummy; /* must be the first element */
111 int in_syscall; /* 1 if task is in a syscall */
112 enum audit_state state, current_state;
113 unsigned int serial; /* serial number for record */
114 int major; /* syscall number */
115 struct timespec ctime; /* time of syscall entry */
116 unsigned long argv[4]; /* syscall arguments */
117 long return_code;/* syscall return code */
118 u64 prio;
119 int return_valid; /* return code is valid */
120 /*
121 * The names_list is the list of all audit_names collected during this
122 * syscall. The first AUDIT_NAMES entries in the names_list will
123 * actually be from the preallocated_names array for performance
124 * reasons. Except during allocation they should never be referenced
125 * through the preallocated_names array and should only be found/used
126 * by running the names_list.
127 */
128 struct audit_names preallocated_names[AUDIT_NAMES];
129 int name_count; /* total records in names_list */
130 struct list_head names_list; /* struct audit_names->list anchor */
131 char *filterkey; /* key for rule that triggered record */
132 struct path pwd;
133 struct audit_aux_data *aux;
134 struct audit_aux_data *aux_pids;
135 struct sockaddr_storage *sockaddr;
136 size_t sockaddr_len;
137 /* Save things to print about task_struct */
138 pid_t pid, ppid;
139 kuid_t uid, euid, suid, fsuid;
140 kgid_t gid, egid, sgid, fsgid;
141 unsigned long personality;
142 int arch;
143
144 pid_t target_pid;
145 kuid_t target_auid;
146 kuid_t target_uid;
147 unsigned int target_sessionid;
148 u32 target_sid;
149 char target_comm[TASK_COMM_LEN];
150
151 struct audit_tree_refs *trees, *first_trees;
152 struct list_head killed_trees;
153 int tree_count;
154
155 int type;
156 union {
157 struct {
158 int nargs;
159 long args[6];
160 } socketcall;
161 struct {
162 kuid_t uid;
163 kgid_t gid;
164 umode_t mode;
165 u32 osid;
166 int has_perm;
167 uid_t perm_uid;
168 gid_t perm_gid;
169 umode_t perm_mode;
170 unsigned long qbytes;
171 } ipc;
172 struct {
173 mqd_t mqdes;
174 struct mq_attr mqstat;
175 } mq_getsetattr;
176 struct {
177 mqd_t mqdes;
178 int sigev_signo;
179 } mq_notify;
180 struct {
181 mqd_t mqdes;
182 size_t msg_len;
183 unsigned int msg_prio;
184 struct timespec abs_timeout;
185 } mq_sendrecv;
186 struct {
187 int oflag;
188 umode_t mode;
189 struct mq_attr attr;
190 } mq_open;
191 struct {
192 pid_t pid;
193 struct audit_cap_data cap;
194 } capset;
195 struct {
196 int fd;
197 int flags;
198 } mmap;
199 struct {
200 int argc;
201 } execve;
202 };
203 int fds[2];
204 struct audit_proctitle proctitle;
205};
206
207extern u32 audit_ever_enabled;
208
209extern void audit_copy_inode(struct audit_names *name,
210 const struct dentry *dentry,
211 struct inode *inode);
212extern void audit_log_cap(struct audit_buffer *ab, char *prefix,
213 kernel_cap_t *cap);
214extern void audit_log_name(struct audit_context *context,
215 struct audit_names *n, const struct path *path,
216 int record_num, int *call_panic);
217
218extern int auditd_test_task(const struct task_struct *task);
219
220#define AUDIT_INODE_BUCKETS 32
221extern struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS];
222
223static inline int audit_hash_ino(u32 ino)
224{
225 return (ino & (AUDIT_INODE_BUCKETS-1));
226}
227
228/* Indicates that audit should log the full pathname. */
229#define AUDIT_NAME_FULL -1
230
231extern int audit_match_class(int class, unsigned syscall);
232extern int audit_comparator(const u32 left, const u32 op, const u32 right);
233extern int audit_uid_comparator(kuid_t left, u32 op, kuid_t right);
234extern int audit_gid_comparator(kgid_t left, u32 op, kgid_t right);
235extern int parent_len(const char *path);
236extern int audit_compare_dname_path(const char *dname, const char *path, int plen);
237extern struct sk_buff *audit_make_reply(__u32 portid, int seq, int type,
238 int done, int multi,
239 const void *payload, int size);
240extern void audit_panic(const char *message);
241
242struct audit_netlink_list {
243 __u32 portid;
244 struct net *net;
245 struct sk_buff_head q;
246};
247
248int audit_send_list(void *);
249
250extern int selinux_audit_rule_update(void);
251
252extern struct mutex audit_filter_mutex;
253extern int audit_del_rule(struct audit_entry *);
254extern void audit_free_rule_rcu(struct rcu_head *);
255extern struct list_head audit_filter_list[];
256
257extern struct audit_entry *audit_dupe_rule(struct audit_krule *old);
258
259extern void audit_log_d_path_exe(struct audit_buffer *ab,
260 struct mm_struct *mm);
261
262extern struct tty_struct *audit_get_tty(struct task_struct *tsk);
263extern void audit_put_tty(struct tty_struct *tty);
264
265/* audit watch functions */
266#ifdef CONFIG_AUDIT_WATCH
267extern void audit_put_watch(struct audit_watch *watch);
268extern void audit_get_watch(struct audit_watch *watch);
269extern int audit_to_watch(struct audit_krule *krule, char *path, int len, u32 op);
270extern int audit_add_watch(struct audit_krule *krule, struct list_head **list);
271extern void audit_remove_watch_rule(struct audit_krule *krule);
272extern char *audit_watch_path(struct audit_watch *watch);
273extern int audit_watch_compare(struct audit_watch *watch, unsigned long ino, dev_t dev);
274
275extern struct audit_fsnotify_mark *audit_alloc_mark(struct audit_krule *krule, char *pathname, int len);
276extern char *audit_mark_path(struct audit_fsnotify_mark *mark);
277extern void audit_remove_mark(struct audit_fsnotify_mark *audit_mark);
278extern void audit_remove_mark_rule(struct audit_krule *krule);
279extern int audit_mark_compare(struct audit_fsnotify_mark *mark, unsigned long ino, dev_t dev);
280extern int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old);
281extern int audit_exe_compare(struct task_struct *tsk, struct audit_fsnotify_mark *mark);
282
283#else
284#define audit_put_watch(w) {}
285#define audit_get_watch(w) {}
286#define audit_to_watch(k, p, l, o) (-EINVAL)
287#define audit_add_watch(k, l) (-EINVAL)
288#define audit_remove_watch_rule(k) BUG()
289#define audit_watch_path(w) ""
290#define audit_watch_compare(w, i, d) 0
291
292#define audit_alloc_mark(k, p, l) (ERR_PTR(-EINVAL))
293#define audit_mark_path(m) ""
294#define audit_remove_mark(m)
295#define audit_remove_mark_rule(k)
296#define audit_mark_compare(m, i, d) 0
297#define audit_exe_compare(t, m) (-EINVAL)
298#define audit_dupe_exe(n, o) (-EINVAL)
299#endif /* CONFIG_AUDIT_WATCH */
300
301#ifdef CONFIG_AUDIT_TREE
302extern struct audit_chunk *audit_tree_lookup(const struct inode *);
303extern void audit_put_chunk(struct audit_chunk *);
304extern bool audit_tree_match(struct audit_chunk *, struct audit_tree *);
305extern int audit_make_tree(struct audit_krule *, char *, u32);
306extern int audit_add_tree_rule(struct audit_krule *);
307extern int audit_remove_tree_rule(struct audit_krule *);
308extern void audit_trim_trees(void);
309extern int audit_tag_tree(char *old, char *new);
310extern const char *audit_tree_path(struct audit_tree *);
311extern void audit_put_tree(struct audit_tree *);
312extern void audit_kill_trees(struct list_head *);
313#else
314#define audit_remove_tree_rule(rule) BUG()
315#define audit_add_tree_rule(rule) -EINVAL
316#define audit_make_tree(rule, str, op) -EINVAL
317#define audit_trim_trees() (void)0
318#define audit_put_tree(tree) (void)0
319#define audit_tag_tree(old, new) -EINVAL
320#define audit_tree_path(rule) "" /* never called */
321#define audit_kill_trees(list) BUG()
322#endif
323
324extern char *audit_unpack_string(void **, size_t *, size_t);
325
326extern pid_t audit_sig_pid;
327extern kuid_t audit_sig_uid;
328extern u32 audit_sig_sid;
329
330extern int audit_filter(int msgtype, unsigned int listtype);
331
332#ifdef CONFIG_AUDITSYSCALL
333extern int __audit_signal_info(int sig, struct task_struct *t);
334static inline int audit_signal_info(int sig, struct task_struct *t)
335{
336 if (auditd_test_task(t) || (audit_signals && !audit_dummy_context()))
337 return __audit_signal_info(sig, t);
338 return 0;
339}
340extern void audit_filter_inodes(struct task_struct *, struct audit_context *);
341extern struct list_head *audit_killed_trees(void);
342#else
343#define audit_signal_info(s,t) AUDIT_DISABLED
344#define audit_filter_inodes(t,c) AUDIT_DISABLED
345#endif
346
347extern struct mutex audit_cmd_mutex;
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* audit -- definition of audit_context structure and supporting types
3 *
4 * Copyright 2003-2004 Red Hat, Inc.
5 * Copyright 2005 Hewlett-Packard Development Company, L.P.
6 * Copyright 2005 IBM Corporation
7 */
8
9#ifndef _KERNEL_AUDIT_H_
10#define _KERNEL_AUDIT_H_
11
12#include <linux/fs.h>
13#include <linux/audit.h>
14#include <linux/security.h>
15#include <linux/skbuff.h>
16#include <uapi/linux/mqueue.h>
17#include <linux/tty.h>
18#include <uapi/linux/openat2.h> // struct open_how
19
20/* AUDIT_NAMES is the number of slots we reserve in the audit_context
21 * for saving names from getname(). If we get more names we will allocate
22 * a name dynamically and also add those to the list anchored by names_list. */
23#define AUDIT_NAMES 5
24
25/* At task start time, the audit_state is set in the audit_context using
26 a per-task filter. At syscall entry, the audit_state is augmented by
27 the syscall filter. */
28enum audit_state {
29 AUDIT_STATE_DISABLED, /* Do not create per-task audit_context.
30 * No syscall-specific audit records can
31 * be generated. */
32 AUDIT_STATE_BUILD, /* Create the per-task audit_context,
33 * and fill it in at syscall
34 * entry time. This makes a full
35 * syscall record available if some
36 * other part of the kernel decides it
37 * should be recorded. */
38 AUDIT_STATE_RECORD /* Create the per-task audit_context,
39 * always fill it in at syscall entry
40 * time, and always write out the audit
41 * record at syscall exit time. */
42};
43
44/* Rule lists */
45struct audit_watch;
46struct audit_fsnotify_mark;
47struct audit_tree;
48struct audit_chunk;
49
50struct audit_entry {
51 struct list_head list;
52 struct rcu_head rcu;
53 struct audit_krule rule;
54};
55
56struct audit_cap_data {
57 kernel_cap_t permitted;
58 kernel_cap_t inheritable;
59 union {
60 unsigned int fE; /* effective bit of file cap */
61 kernel_cap_t effective; /* effective set of process */
62 };
63 kernel_cap_t ambient;
64 kuid_t rootid;
65};
66
67/* When fs/namei.c:getname() is called, we store the pointer in name and bump
68 * the refcnt in the associated filename struct.
69 *
70 * Further, in fs/namei.c:path_lookup() we store the inode and device.
71 */
72struct audit_names {
73 struct list_head list; /* audit_context->names_list */
74
75 struct filename *name;
76 int name_len; /* number of chars to log */
77 bool hidden; /* don't log this record */
78
79 unsigned long ino;
80 dev_t dev;
81 umode_t mode;
82 kuid_t uid;
83 kgid_t gid;
84 dev_t rdev;
85 struct lsm_prop oprop;
86 struct audit_cap_data fcap;
87 unsigned int fcap_ver;
88 unsigned char type; /* record type */
89 /*
90 * This was an allocated audit_names and not from the array of
91 * names allocated in the task audit context. Thus this name
92 * should be freed on syscall exit.
93 */
94 bool should_free;
95};
96
97struct audit_proctitle {
98 int len; /* length of the cmdline field. */
99 char *value; /* the cmdline field */
100};
101
102/* The per-task audit context. */
103struct audit_context {
104 int dummy; /* must be the first element */
105 enum {
106 AUDIT_CTX_UNUSED, /* audit_context is currently unused */
107 AUDIT_CTX_SYSCALL, /* in use by syscall */
108 AUDIT_CTX_URING, /* in use by io_uring */
109 } context;
110 enum audit_state state, current_state;
111 unsigned int serial; /* serial number for record */
112 int major; /* syscall number */
113 int uring_op; /* uring operation */
114 struct timespec64 ctime; /* time of syscall entry */
115 unsigned long argv[4]; /* syscall arguments */
116 long return_code;/* syscall return code */
117 u64 prio;
118 int return_valid; /* return code is valid */
119 /*
120 * The names_list is the list of all audit_names collected during this
121 * syscall. The first AUDIT_NAMES entries in the names_list will
122 * actually be from the preallocated_names array for performance
123 * reasons. Except during allocation they should never be referenced
124 * through the preallocated_names array and should only be found/used
125 * by running the names_list.
126 */
127 struct audit_names preallocated_names[AUDIT_NAMES];
128 int name_count; /* total records in names_list */
129 struct list_head names_list; /* struct audit_names->list anchor */
130 char *filterkey; /* key for rule that triggered record */
131 struct path pwd;
132 struct audit_aux_data *aux;
133 struct audit_aux_data *aux_pids;
134 struct sockaddr_storage *sockaddr;
135 size_t sockaddr_len;
136 /* Save things to print about task_struct */
137 pid_t ppid;
138 kuid_t uid, euid, suid, fsuid;
139 kgid_t gid, egid, sgid, fsgid;
140 unsigned long personality;
141 int arch;
142
143 pid_t target_pid;
144 kuid_t target_auid;
145 kuid_t target_uid;
146 unsigned int target_sessionid;
147 struct lsm_prop target_ref;
148 char target_comm[TASK_COMM_LEN];
149
150 struct audit_tree_refs *trees, *first_trees;
151 struct list_head killed_trees;
152 int tree_count;
153
154 int type;
155 union {
156 struct {
157 int nargs;
158 long args[6];
159 } socketcall;
160 struct {
161 kuid_t uid;
162 kgid_t gid;
163 umode_t mode;
164 struct lsm_prop oprop;
165 int has_perm;
166 uid_t perm_uid;
167 gid_t perm_gid;
168 umode_t perm_mode;
169 unsigned long qbytes;
170 } ipc;
171 struct {
172 mqd_t mqdes;
173 struct mq_attr mqstat;
174 } mq_getsetattr;
175 struct {
176 mqd_t mqdes;
177 int sigev_signo;
178 } mq_notify;
179 struct {
180 mqd_t mqdes;
181 size_t msg_len;
182 unsigned int msg_prio;
183 struct timespec64 abs_timeout;
184 } mq_sendrecv;
185 struct {
186 int oflag;
187 umode_t mode;
188 struct mq_attr attr;
189 } mq_open;
190 struct {
191 pid_t pid;
192 struct audit_cap_data cap;
193 } capset;
194 struct {
195 int fd;
196 int flags;
197 } mmap;
198 struct open_how openat2;
199 struct {
200 int argc;
201 } execve;
202 struct {
203 char *name;
204 } module;
205 struct {
206 struct audit_ntp_data ntp_data;
207 struct timespec64 tk_injoffset;
208 } time;
209 };
210 int fds[2];
211 struct audit_proctitle proctitle;
212};
213
214extern bool audit_ever_enabled;
215
216extern void audit_log_session_info(struct audit_buffer *ab);
217
218extern int auditd_test_task(struct task_struct *task);
219
220#define AUDIT_INODE_BUCKETS 32
221extern struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS];
222
223static inline int audit_hash_ino(u32 ino)
224{
225 return (ino & (AUDIT_INODE_BUCKETS-1));
226}
227
228/* Indicates that audit should log the full pathname. */
229#define AUDIT_NAME_FULL -1
230
231extern int audit_match_class(int class, unsigned syscall);
232extern int audit_comparator(const u32 left, const u32 op, const u32 right);
233extern int audit_uid_comparator(kuid_t left, u32 op, kuid_t right);
234extern int audit_gid_comparator(kgid_t left, u32 op, kgid_t right);
235extern int parent_len(const char *path);
236extern int audit_compare_dname_path(const struct qstr *dname, const char *path, int plen);
237extern struct sk_buff *audit_make_reply(int seq, int type, int done, int multi,
238 const void *payload, int size);
239extern void audit_panic(const char *message);
240
241struct audit_netlink_list {
242 __u32 portid;
243 struct net *net;
244 struct sk_buff_head q;
245};
246
247int audit_send_list_thread(void *_dest);
248
249extern struct mutex audit_filter_mutex;
250extern int audit_del_rule(struct audit_entry *entry);
251extern void audit_free_rule_rcu(struct rcu_head *head);
252extern struct list_head audit_filter_list[];
253
254extern struct audit_entry *audit_dupe_rule(struct audit_krule *old);
255
256extern void audit_log_d_path_exe(struct audit_buffer *ab,
257 struct mm_struct *mm);
258
259extern struct tty_struct *audit_get_tty(void);
260extern void audit_put_tty(struct tty_struct *tty);
261
262/* audit watch/mark/tree functions */
263extern unsigned int audit_serial(void);
264#ifdef CONFIG_AUDITSYSCALL
265extern int auditsc_get_stamp(struct audit_context *ctx,
266 struct timespec64 *t, unsigned int *serial);
267
268extern void audit_put_watch(struct audit_watch *watch);
269extern void audit_get_watch(struct audit_watch *watch);
270extern int audit_to_watch(struct audit_krule *krule, char *path, int len,
271 u32 op);
272extern int audit_add_watch(struct audit_krule *krule, struct list_head **list);
273extern void audit_remove_watch_rule(struct audit_krule *krule);
274extern char *audit_watch_path(struct audit_watch *watch);
275extern int audit_watch_compare(struct audit_watch *watch, unsigned long ino,
276 dev_t dev);
277
278extern struct audit_fsnotify_mark *audit_alloc_mark(struct audit_krule *krule,
279 char *pathname, int len);
280extern char *audit_mark_path(struct audit_fsnotify_mark *mark);
281extern void audit_remove_mark(struct audit_fsnotify_mark *audit_mark);
282extern void audit_remove_mark_rule(struct audit_krule *krule);
283extern int audit_mark_compare(struct audit_fsnotify_mark *mark,
284 unsigned long ino, dev_t dev);
285extern int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old);
286extern int audit_exe_compare(struct task_struct *tsk,
287 struct audit_fsnotify_mark *mark);
288
289extern struct audit_chunk *audit_tree_lookup(const struct inode *inode);
290extern void audit_put_chunk(struct audit_chunk *chunk);
291extern bool audit_tree_match(struct audit_chunk *chunk,
292 struct audit_tree *tree);
293extern int audit_make_tree(struct audit_krule *rule, char *pathname, u32 op);
294extern int audit_add_tree_rule(struct audit_krule *rule);
295extern int audit_remove_tree_rule(struct audit_krule *rule);
296extern void audit_trim_trees(void);
297extern int audit_tag_tree(char *old, char *new);
298extern const char *audit_tree_path(struct audit_tree *tree);
299extern void audit_put_tree(struct audit_tree *tree);
300extern void audit_kill_trees(struct audit_context *context);
301
302extern int audit_signal_info_syscall(struct task_struct *t);
303extern void audit_filter_inodes(struct task_struct *tsk,
304 struct audit_context *ctx);
305extern struct list_head *audit_killed_trees(void);
306#else /* CONFIG_AUDITSYSCALL */
307#define auditsc_get_stamp(c, t, s) 0
308#define audit_put_watch(w) do { } while (0)
309#define audit_get_watch(w) do { } while (0)
310#define audit_to_watch(k, p, l, o) (-EINVAL)
311#define audit_add_watch(k, l) (-EINVAL)
312#define audit_remove_watch_rule(k) BUG()
313#define audit_watch_path(w) ""
314#define audit_watch_compare(w, i, d) 0
315
316#define audit_alloc_mark(k, p, l) (ERR_PTR(-EINVAL))
317#define audit_mark_path(m) ""
318#define audit_remove_mark(m) do { } while (0)
319#define audit_remove_mark_rule(k) do { } while (0)
320#define audit_mark_compare(m, i, d) 0
321#define audit_exe_compare(t, m) (-EINVAL)
322#define audit_dupe_exe(n, o) (-EINVAL)
323
324#define audit_remove_tree_rule(rule) BUG()
325#define audit_add_tree_rule(rule) -EINVAL
326#define audit_make_tree(rule, str, op) -EINVAL
327#define audit_trim_trees() do { } while (0)
328#define audit_put_tree(tree) do { } while (0)
329#define audit_tag_tree(old, new) -EINVAL
330#define audit_tree_path(rule) "" /* never called */
331#define audit_kill_trees(context) BUG()
332
333static inline int audit_signal_info_syscall(struct task_struct *t)
334{
335 return 0;
336}
337
338#define audit_filter_inodes(t, c) do { } while (0)
339#endif /* CONFIG_AUDITSYSCALL */
340
341extern char *audit_unpack_string(void **bufp, size_t *remain, size_t len);
342
343extern int audit_filter(int msgtype, unsigned int listtype);
344
345extern void audit_ctl_lock(void);
346extern void audit_ctl_unlock(void);
347
348#endif