This source file includes following definitions.
- __printf
- audit_get_sessionid
- __printf
- audit_log_start
- __printf
- audit_log_end
- audit_log_n_hex
- audit_log_n_string
- audit_log_n_untrustedstring
- audit_log_untrustedstring
- audit_log_d_path
- audit_log_key
- audit_log_link_denied
- audit_log_task_context
- audit_log_task_info
- audit_get_loginuid
- audit_get_sessionid
- audit_signal_info
- audit_set_context
- audit_dummy_context
- audit_free
- audit_syscall_entry
- audit_syscall_exit
- audit_reusename
- audit_getname
- audit_inode
- audit_file
- audit_inode_parent_hidden
- audit_inode_child
- audit_ptrace
- audit_ipc_obj
- audit_fd_pair
- audit_ipc_set_perm
- audit_bprm
- audit_socketcall
- audit_socketcall_compat
- audit_sockaddr
- audit_mq_open
- audit_mq_sendrecv
- audit_mq_notify
- audit_mq_getsetattr
- audit_log_bprm_fcaps
- audit_log_capset
- audit_mmap_fd
- audit_log_kern_module
- audit_fanotify
- audit_tk_injoffset
- audit_ntp_init
- audit_ntp_set_old
- audit_ntp_set_new
- audit_ntp_log
- audit_alloc
- audit_free
- audit_syscall_entry
- audit_syscall_exit
- audit_dummy_context
- audit_set_context
- audit_reusename
- audit_getname
- __audit_inode
- __audit_inode_child
- audit_inode
- audit_file
- audit_inode_parent_hidden
- audit_inode_child
- audit_core_dumps
- audit_seccomp
- audit_seccomp_actions_logged
- audit_ipc_obj
- audit_ipc_set_perm
- audit_bprm
- audit_socketcall
- audit_socketcall_compat
- audit_fd_pair
- audit_sockaddr
- audit_mq_open
- audit_mq_sendrecv
- audit_mq_notify
- audit_mq_getsetattr
- audit_log_bprm_fcaps
- audit_log_capset
- audit_mmap_fd
- audit_log_kern_module
- audit_fanotify
- audit_tk_injoffset
- audit_ntp_init
- audit_ntp_set_old
- audit_ntp_set_new
- audit_ntp_log
- audit_ptrace
- audit_loginuid_set
- audit_log_string
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9 #ifndef _LINUX_AUDIT_H_
10 #define _LINUX_AUDIT_H_
11
12 #include <linux/sched.h>
13 #include <linux/ptrace.h>
14 #include <uapi/linux/audit.h>
15
16 #define AUDIT_INO_UNSET ((unsigned long)-1)
17 #define AUDIT_DEV_UNSET ((dev_t)-1)
18
19 struct audit_sig_info {
20 uid_t uid;
21 pid_t pid;
22 char ctx[0];
23 };
24
25 struct audit_buffer;
26 struct audit_context;
27 struct inode;
28 struct netlink_skb_parms;
29 struct path;
30 struct linux_binprm;
31 struct mq_attr;
32 struct mqstat;
33 struct audit_watch;
34 struct audit_tree;
35 struct sk_buff;
36
37 struct audit_krule {
38 u32 pflags;
39 u32 flags;
40 u32 listnr;
41 u32 action;
42 u32 mask[AUDIT_BITMASK_SIZE];
43 u32 buflen;
44 u32 field_count;
45 char *filterkey;
46 struct audit_field *fields;
47 struct audit_field *arch_f;
48 struct audit_field *inode_f;
49 struct audit_watch *watch;
50 struct audit_tree *tree;
51 struct audit_fsnotify_mark *exe;
52 struct list_head rlist;
53 struct list_head list;
54 u64 prio;
55 };
56
57
58 #define AUDIT_LOGINUID_LEGACY 0x1
59
60 struct audit_field {
61 u32 type;
62 union {
63 u32 val;
64 kuid_t uid;
65 kgid_t gid;
66 struct {
67 char *lsm_str;
68 void *lsm_rule;
69 };
70 };
71 u32 op;
72 };
73
74 enum audit_ntp_type {
75 AUDIT_NTP_OFFSET,
76 AUDIT_NTP_FREQ,
77 AUDIT_NTP_STATUS,
78 AUDIT_NTP_TAI,
79 AUDIT_NTP_TICK,
80 AUDIT_NTP_ADJUST,
81
82 AUDIT_NTP_NVALS
83 };
84
85 #ifdef CONFIG_AUDITSYSCALL
86 struct audit_ntp_val {
87 long long oldval, newval;
88 };
89
90 struct audit_ntp_data {
91 struct audit_ntp_val vals[AUDIT_NTP_NVALS];
92 };
93 #else
94 struct audit_ntp_data {};
95 #endif
96
97 extern int is_audit_feature_set(int which);
98
99 extern int __init audit_register_class(int class, unsigned *list);
100 extern int audit_classify_syscall(int abi, unsigned syscall);
101 extern int audit_classify_arch(int arch);
102
103 extern unsigned compat_write_class[];
104 extern unsigned compat_read_class[];
105 extern unsigned compat_dir_class[];
106 extern unsigned compat_chattr_class[];
107 extern unsigned compat_signal_class[];
108
109 extern int audit_classify_compat_syscall(int abi, unsigned syscall);
110
111
112 #define AUDIT_TYPE_UNKNOWN 0
113 #define AUDIT_TYPE_NORMAL 1
114 #define AUDIT_TYPE_PARENT 2
115 #define AUDIT_TYPE_CHILD_DELETE 3
116 #define AUDIT_TYPE_CHILD_CREATE 4
117
118
119 #define AUDITSC_ARGS 6
120
121
122 #define AUDIT_TTY_ENABLE BIT(0)
123 #define AUDIT_TTY_LOG_PASSWD BIT(1)
124
125 struct filename;
126
127 #define AUDIT_OFF 0
128 #define AUDIT_ON 1
129 #define AUDIT_LOCKED 2
130 #ifdef CONFIG_AUDIT
131
132
133 extern __printf(4, 5)
134 void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
135 const char *fmt, ...);
136
137 extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
138 extern __printf(2, 3)
139 void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
140 extern void audit_log_end(struct audit_buffer *ab);
141 extern bool audit_string_contains_control(const char *string,
142 size_t len);
143 extern void audit_log_n_hex(struct audit_buffer *ab,
144 const unsigned char *buf,
145 size_t len);
146 extern void audit_log_n_string(struct audit_buffer *ab,
147 const char *buf,
148 size_t n);
149 extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
150 const char *string,
151 size_t n);
152 extern void audit_log_untrustedstring(struct audit_buffer *ab,
153 const char *string);
154 extern void audit_log_d_path(struct audit_buffer *ab,
155 const char *prefix,
156 const struct path *path);
157 extern void audit_log_key(struct audit_buffer *ab,
158 char *key);
159 extern void audit_log_link_denied(const char *operation);
160 extern void audit_log_lost(const char *message);
161
162 extern int audit_log_task_context(struct audit_buffer *ab);
163 extern void audit_log_task_info(struct audit_buffer *ab);
164
165 extern int audit_update_lsm_rules(void);
166
167
168 extern int audit_rule_change(int type, int seq, void *data, size_t datasz);
169 extern int audit_list_rules_send(struct sk_buff *request_skb, int seq);
170
171 extern int audit_set_loginuid(kuid_t loginuid);
172
173 static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
174 {
175 return tsk->loginuid;
176 }
177
178 static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
179 {
180 return tsk->sessionid;
181 }
182
183 extern u32 audit_enabled;
184
185 extern int audit_signal_info(int sig, struct task_struct *t);
186
187 #else
188 static inline __printf(4, 5)
189 void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
190 const char *fmt, ...)
191 { }
192 static inline struct audit_buffer *audit_log_start(struct audit_context *ctx,
193 gfp_t gfp_mask, int type)
194 {
195 return NULL;
196 }
197 static inline __printf(2, 3)
198 void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
199 { }
200 static inline void audit_log_end(struct audit_buffer *ab)
201 { }
202 static inline void audit_log_n_hex(struct audit_buffer *ab,
203 const unsigned char *buf, size_t len)
204 { }
205 static inline void audit_log_n_string(struct audit_buffer *ab,
206 const char *buf, size_t n)
207 { }
208 static inline void audit_log_n_untrustedstring(struct audit_buffer *ab,
209 const char *string, size_t n)
210 { }
211 static inline void audit_log_untrustedstring(struct audit_buffer *ab,
212 const char *string)
213 { }
214 static inline void audit_log_d_path(struct audit_buffer *ab,
215 const char *prefix,
216 const struct path *path)
217 { }
218 static inline void audit_log_key(struct audit_buffer *ab, char *key)
219 { }
220 static inline void audit_log_link_denied(const char *string)
221 { }
222 static inline int audit_log_task_context(struct audit_buffer *ab)
223 {
224 return 0;
225 }
226 static inline void audit_log_task_info(struct audit_buffer *ab)
227 { }
228
229 static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
230 {
231 return INVALID_UID;
232 }
233
234 static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
235 {
236 return AUDIT_SID_UNSET;
237 }
238
239 #define audit_enabled AUDIT_OFF
240
241 static inline int audit_signal_info(int sig, struct task_struct *t)
242 {
243 return 0;
244 }
245
246 #endif
247
248 #ifdef CONFIG_AUDIT_COMPAT_GENERIC
249 #define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
250 #else
251 #define audit_is_compat(arch) false
252 #endif
253
254 #define AUDIT_INODE_PARENT 1
255 #define AUDIT_INODE_HIDDEN 2
256 #define AUDIT_INODE_NOEVAL 4
257
258 #ifdef CONFIG_AUDITSYSCALL
259 #include <asm/syscall.h>
260
261
262
263 extern int audit_alloc(struct task_struct *task);
264 extern void __audit_free(struct task_struct *task);
265 extern void __audit_syscall_entry(int major, unsigned long a0, unsigned long a1,
266 unsigned long a2, unsigned long a3);
267 extern void __audit_syscall_exit(int ret_success, long ret_value);
268 extern struct filename *__audit_reusename(const __user char *uptr);
269 extern void __audit_getname(struct filename *name);
270
271 extern void __audit_inode(struct filename *name, const struct dentry *dentry,
272 unsigned int flags);
273 extern void __audit_file(const struct file *);
274 extern void __audit_inode_child(struct inode *parent,
275 const struct dentry *dentry,
276 const unsigned char type);
277 extern void audit_seccomp(unsigned long syscall, long signr, int code);
278 extern void audit_seccomp_actions_logged(const char *names,
279 const char *old_names, int res);
280 extern void __audit_ptrace(struct task_struct *t);
281
282 static inline void audit_set_context(struct task_struct *task, struct audit_context *ctx)
283 {
284 task->audit_context = ctx;
285 }
286
287 static inline struct audit_context *audit_context(void)
288 {
289 return current->audit_context;
290 }
291
292 static inline bool audit_dummy_context(void)
293 {
294 void *p = audit_context();
295 return !p || *(int *)p;
296 }
297 static inline void audit_free(struct task_struct *task)
298 {
299 if (unlikely(task->audit_context))
300 __audit_free(task);
301 }
302 static inline void audit_syscall_entry(int major, unsigned long a0,
303 unsigned long a1, unsigned long a2,
304 unsigned long a3)
305 {
306 if (unlikely(audit_context()))
307 __audit_syscall_entry(major, a0, a1, a2, a3);
308 }
309 static inline void audit_syscall_exit(void *pt_regs)
310 {
311 if (unlikely(audit_context())) {
312 int success = is_syscall_success(pt_regs);
313 long return_code = regs_return_value(pt_regs);
314
315 __audit_syscall_exit(success, return_code);
316 }
317 }
318 static inline struct filename *audit_reusename(const __user char *name)
319 {
320 if (unlikely(!audit_dummy_context()))
321 return __audit_reusename(name);
322 return NULL;
323 }
324 static inline void audit_getname(struct filename *name)
325 {
326 if (unlikely(!audit_dummy_context()))
327 __audit_getname(name);
328 }
329 static inline void audit_inode(struct filename *name,
330 const struct dentry *dentry,
331 unsigned int aflags) {
332 if (unlikely(!audit_dummy_context()))
333 __audit_inode(name, dentry, aflags);
334 }
335 static inline void audit_file(struct file *file)
336 {
337 if (unlikely(!audit_dummy_context()))
338 __audit_file(file);
339 }
340 static inline void audit_inode_parent_hidden(struct filename *name,
341 const struct dentry *dentry)
342 {
343 if (unlikely(!audit_dummy_context()))
344 __audit_inode(name, dentry,
345 AUDIT_INODE_PARENT | AUDIT_INODE_HIDDEN);
346 }
347 static inline void audit_inode_child(struct inode *parent,
348 const struct dentry *dentry,
349 const unsigned char type) {
350 if (unlikely(!audit_dummy_context()))
351 __audit_inode_child(parent, dentry, type);
352 }
353 void audit_core_dumps(long signr);
354
355 static inline void audit_ptrace(struct task_struct *t)
356 {
357 if (unlikely(!audit_dummy_context()))
358 __audit_ptrace(t);
359 }
360
361
362 extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
363 extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
364 extern void __audit_bprm(struct linux_binprm *bprm);
365 extern int __audit_socketcall(int nargs, unsigned long *args);
366 extern int __audit_sockaddr(int len, void *addr);
367 extern void __audit_fd_pair(int fd1, int fd2);
368 extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
369 extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec64 *abs_timeout);
370 extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
371 extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
372 extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
373 const struct cred *new,
374 const struct cred *old);
375 extern void __audit_log_capset(const struct cred *new, const struct cred *old);
376 extern void __audit_mmap_fd(int fd, int flags);
377 extern void __audit_log_kern_module(char *name);
378 extern void __audit_fanotify(unsigned int response);
379 extern void __audit_tk_injoffset(struct timespec64 offset);
380 extern void __audit_ntp_log(const struct audit_ntp_data *ad);
381
382 static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
383 {
384 if (unlikely(!audit_dummy_context()))
385 __audit_ipc_obj(ipcp);
386 }
387 static inline void audit_fd_pair(int fd1, int fd2)
388 {
389 if (unlikely(!audit_dummy_context()))
390 __audit_fd_pair(fd1, fd2);
391 }
392 static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
393 {
394 if (unlikely(!audit_dummy_context()))
395 __audit_ipc_set_perm(qbytes, uid, gid, mode);
396 }
397 static inline void audit_bprm(struct linux_binprm *bprm)
398 {
399 if (unlikely(!audit_dummy_context()))
400 __audit_bprm(bprm);
401 }
402 static inline int audit_socketcall(int nargs, unsigned long *args)
403 {
404 if (unlikely(!audit_dummy_context()))
405 return __audit_socketcall(nargs, args);
406 return 0;
407 }
408
409 static inline int audit_socketcall_compat(int nargs, u32 *args)
410 {
411 unsigned long a[AUDITSC_ARGS];
412 int i;
413
414 if (audit_dummy_context())
415 return 0;
416
417 for (i = 0; i < nargs; i++)
418 a[i] = (unsigned long)args[i];
419 return __audit_socketcall(nargs, a);
420 }
421
422 static inline int audit_sockaddr(int len, void *addr)
423 {
424 if (unlikely(!audit_dummy_context()))
425 return __audit_sockaddr(len, addr);
426 return 0;
427 }
428 static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
429 {
430 if (unlikely(!audit_dummy_context()))
431 __audit_mq_open(oflag, mode, attr);
432 }
433 static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec64 *abs_timeout)
434 {
435 if (unlikely(!audit_dummy_context()))
436 __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
437 }
438 static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
439 {
440 if (unlikely(!audit_dummy_context()))
441 __audit_mq_notify(mqdes, notification);
442 }
443 static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
444 {
445 if (unlikely(!audit_dummy_context()))
446 __audit_mq_getsetattr(mqdes, mqstat);
447 }
448
449 static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
450 const struct cred *new,
451 const struct cred *old)
452 {
453 if (unlikely(!audit_dummy_context()))
454 return __audit_log_bprm_fcaps(bprm, new, old);
455 return 0;
456 }
457
458 static inline void audit_log_capset(const struct cred *new,
459 const struct cred *old)
460 {
461 if (unlikely(!audit_dummy_context()))
462 __audit_log_capset(new, old);
463 }
464
465 static inline void audit_mmap_fd(int fd, int flags)
466 {
467 if (unlikely(!audit_dummy_context()))
468 __audit_mmap_fd(fd, flags);
469 }
470
471 static inline void audit_log_kern_module(char *name)
472 {
473 if (!audit_dummy_context())
474 __audit_log_kern_module(name);
475 }
476
477 static inline void audit_fanotify(unsigned int response)
478 {
479 if (!audit_dummy_context())
480 __audit_fanotify(response);
481 }
482
483 static inline void audit_tk_injoffset(struct timespec64 offset)
484 {
485
486 if (offset.tv_sec == 0 && offset.tv_nsec == 0)
487 return;
488
489 if (!audit_dummy_context())
490 __audit_tk_injoffset(offset);
491 }
492
493 static inline void audit_ntp_init(struct audit_ntp_data *ad)
494 {
495 memset(ad, 0, sizeof(*ad));
496 }
497
498 static inline void audit_ntp_set_old(struct audit_ntp_data *ad,
499 enum audit_ntp_type type, long long val)
500 {
501 ad->vals[type].oldval = val;
502 }
503
504 static inline void audit_ntp_set_new(struct audit_ntp_data *ad,
505 enum audit_ntp_type type, long long val)
506 {
507 ad->vals[type].newval = val;
508 }
509
510 static inline void audit_ntp_log(const struct audit_ntp_data *ad)
511 {
512 if (!audit_dummy_context())
513 __audit_ntp_log(ad);
514 }
515
516 extern int audit_n_rules;
517 extern int audit_signals;
518 #else
519 static inline int audit_alloc(struct task_struct *task)
520 {
521 return 0;
522 }
523 static inline void audit_free(struct task_struct *task)
524 { }
525 static inline void audit_syscall_entry(int major, unsigned long a0,
526 unsigned long a1, unsigned long a2,
527 unsigned long a3)
528 { }
529 static inline void audit_syscall_exit(void *pt_regs)
530 { }
531 static inline bool audit_dummy_context(void)
532 {
533 return true;
534 }
535 static inline void audit_set_context(struct task_struct *task, struct audit_context *ctx)
536 { }
537 static inline struct audit_context *audit_context(void)
538 {
539 return NULL;
540 }
541 static inline struct filename *audit_reusename(const __user char *name)
542 {
543 return NULL;
544 }
545 static inline void audit_getname(struct filename *name)
546 { }
547 static inline void __audit_inode(struct filename *name,
548 const struct dentry *dentry,
549 unsigned int flags)
550 { }
551 static inline void __audit_inode_child(struct inode *parent,
552 const struct dentry *dentry,
553 const unsigned char type)
554 { }
555 static inline void audit_inode(struct filename *name,
556 const struct dentry *dentry,
557 unsigned int aflags)
558 { }
559 static inline void audit_file(struct file *file)
560 {
561 }
562 static inline void audit_inode_parent_hidden(struct filename *name,
563 const struct dentry *dentry)
564 { }
565 static inline void audit_inode_child(struct inode *parent,
566 const struct dentry *dentry,
567 const unsigned char type)
568 { }
569 static inline void audit_core_dumps(long signr)
570 { }
571 static inline void audit_seccomp(unsigned long syscall, long signr, int code)
572 { }
573 static inline void audit_seccomp_actions_logged(const char *names,
574 const char *old_names, int res)
575 { }
576 static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
577 { }
578 static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
579 gid_t gid, umode_t mode)
580 { }
581 static inline void audit_bprm(struct linux_binprm *bprm)
582 { }
583 static inline int audit_socketcall(int nargs, unsigned long *args)
584 {
585 return 0;
586 }
587
588 static inline int audit_socketcall_compat(int nargs, u32 *args)
589 {
590 return 0;
591 }
592
593 static inline void audit_fd_pair(int fd1, int fd2)
594 { }
595 static inline int audit_sockaddr(int len, void *addr)
596 {
597 return 0;
598 }
599 static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
600 { }
601 static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
602 unsigned int msg_prio,
603 const struct timespec64 *abs_timeout)
604 { }
605 static inline void audit_mq_notify(mqd_t mqdes,
606 const struct sigevent *notification)
607 { }
608 static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
609 { }
610 static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
611 const struct cred *new,
612 const struct cred *old)
613 {
614 return 0;
615 }
616 static inline void audit_log_capset(const struct cred *new,
617 const struct cred *old)
618 { }
619 static inline void audit_mmap_fd(int fd, int flags)
620 { }
621
622 static inline void audit_log_kern_module(char *name)
623 {
624 }
625
626 static inline void audit_fanotify(unsigned int response)
627 { }
628
629 static inline void audit_tk_injoffset(struct timespec64 offset)
630 { }
631
632 static inline void audit_ntp_init(struct audit_ntp_data *ad)
633 { }
634
635 static inline void audit_ntp_set_old(struct audit_ntp_data *ad,
636 enum audit_ntp_type type, long long val)
637 { }
638
639 static inline void audit_ntp_set_new(struct audit_ntp_data *ad,
640 enum audit_ntp_type type, long long val)
641 { }
642
643 static inline void audit_ntp_log(const struct audit_ntp_data *ad)
644 { }
645
646 static inline void audit_ptrace(struct task_struct *t)
647 { }
648 #define audit_n_rules 0
649 #define audit_signals 0
650 #endif
651
652 static inline bool audit_loginuid_set(struct task_struct *tsk)
653 {
654 return uid_valid(audit_get_loginuid(tsk));
655 }
656
657 static inline void audit_log_string(struct audit_buffer *ab, const char *buf)
658 {
659 audit_log_n_string(ab, buf, strlen(buf));
660 }
661
662 #endif