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1 /* audit.h -- Auditing support
3 * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * Written by Rickard E. (Rik) Faith <faith@redhat.com>
23 #ifndef _LINUX_AUDIT_H_
24 #define _LINUX_AUDIT_H_
26 #include <linux/sched.h>
27 #include <linux/ptrace.h>
28 #include <uapi/linux/audit.h>
30 struct audit_sig_info
{
39 struct netlink_skb_parms
;
53 u32 mask
[AUDIT_BITMASK_SIZE
];
54 u32 buflen
; /* for data alloc on list rules */
56 char *filterkey
; /* ties events to rules */
57 struct audit_field
*fields
;
58 struct audit_field
*arch_f
; /* quick access to arch field */
59 struct audit_field
*inode_f
; /* quick access to an inode field */
60 struct audit_watch
*watch
; /* associated watch */
61 struct audit_tree
*tree
; /* associated watched tree */
62 struct list_head rlist
; /* entry in audit_{watch,tree}.rules list */
63 struct list_head list
; /* for AUDIT_LIST* purposes only */
81 extern int is_audit_feature_set(int which
);
83 extern int __init
audit_register_class(int class, unsigned *list
);
84 extern int audit_classify_syscall(int abi
, unsigned syscall
);
85 extern int audit_classify_arch(int arch
);
86 /* only for compat system calls */
87 extern unsigned compat_write_class
[];
88 extern unsigned compat_read_class
[];
89 extern unsigned compat_dir_class
[];
90 extern unsigned compat_chattr_class
[];
91 extern unsigned compat_signal_class
[];
93 extern int __weak
audit_classify_compat_syscall(int abi
, unsigned syscall
);
95 /* audit_names->type values */
96 #define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
97 #define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
98 #define AUDIT_TYPE_PARENT 2 /* a parent audit record */
99 #define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
100 #define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
102 /* maximized args number that audit_socketcall can process */
103 #define AUDITSC_ARGS 6
107 extern void audit_log_session_info(struct audit_buffer
*ab
);
109 #ifdef CONFIG_AUDIT_COMPAT_GENERIC
110 #define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
112 #define audit_is_compat(arch) false
115 #ifdef CONFIG_AUDITSYSCALL
116 #include <asm/syscall.h> /* for syscall_get_arch() */
118 /* These are defined in auditsc.c */
120 extern int audit_alloc(struct task_struct
*task
);
121 extern void __audit_free(struct task_struct
*task
);
122 extern void __audit_syscall_entry(int major
, unsigned long a0
, unsigned long a1
,
123 unsigned long a2
, unsigned long a3
);
124 extern void __audit_syscall_exit(int ret_success
, long ret_value
);
125 extern struct filename
*__audit_reusename(const __user
char *uptr
);
126 extern void __audit_getname(struct filename
*name
);
127 extern void audit_putname(struct filename
*name
);
129 #define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
130 #define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
131 extern void __audit_inode(struct filename
*name
, const struct dentry
*dentry
,
133 extern void __audit_inode_child(const struct inode
*parent
,
134 const struct dentry
*dentry
,
135 const unsigned char type
);
136 extern void __audit_seccomp(unsigned long syscall
, long signr
, int code
);
137 extern void __audit_ptrace(struct task_struct
*t
);
139 static inline int audit_dummy_context(void)
141 void *p
= current
->audit_context
;
142 return !p
|| *(int *)p
;
144 static inline void audit_free(struct task_struct
*task
)
146 if (unlikely(task
->audit_context
))
149 static inline void audit_syscall_entry(int major
, unsigned long a0
,
150 unsigned long a1
, unsigned long a2
,
153 if (unlikely(current
->audit_context
))
154 __audit_syscall_entry(major
, a0
, a1
, a2
, a3
);
156 static inline void audit_syscall_exit(void *pt_regs
)
158 if (unlikely(current
->audit_context
)) {
159 int success
= is_syscall_success(pt_regs
);
160 long return_code
= regs_return_value(pt_regs
);
162 __audit_syscall_exit(success
, return_code
);
165 static inline struct filename
*audit_reusename(const __user
char *name
)
167 if (unlikely(!audit_dummy_context()))
168 return __audit_reusename(name
);
171 static inline void audit_getname(struct filename
*name
)
173 if (unlikely(!audit_dummy_context()))
174 __audit_getname(name
);
176 static inline void audit_inode(struct filename
*name
,
177 const struct dentry
*dentry
,
178 unsigned int parent
) {
179 if (unlikely(!audit_dummy_context())) {
180 unsigned int flags
= 0;
182 flags
|= AUDIT_INODE_PARENT
;
183 __audit_inode(name
, dentry
, flags
);
186 static inline void audit_inode_parent_hidden(struct filename
*name
,
187 const struct dentry
*dentry
)
189 if (unlikely(!audit_dummy_context()))
190 __audit_inode(name
, dentry
,
191 AUDIT_INODE_PARENT
| AUDIT_INODE_HIDDEN
);
193 static inline void audit_inode_child(const struct inode
*parent
,
194 const struct dentry
*dentry
,
195 const unsigned char type
) {
196 if (unlikely(!audit_dummy_context()))
197 __audit_inode_child(parent
, dentry
, type
);
199 void audit_core_dumps(long signr
);
201 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
203 /* Force a record to be reported if a signal was delivered. */
204 if (signr
|| unlikely(!audit_dummy_context()))
205 __audit_seccomp(syscall
, signr
, code
);
208 static inline void audit_ptrace(struct task_struct
*t
)
210 if (unlikely(!audit_dummy_context()))
214 /* Private API (for audit.c only) */
215 extern unsigned int audit_serial(void);
216 extern int auditsc_get_stamp(struct audit_context
*ctx
,
217 struct timespec
*t
, unsigned int *serial
);
218 extern int audit_set_loginuid(kuid_t loginuid
);
220 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
222 return tsk
->loginuid
;
225 static inline unsigned int audit_get_sessionid(struct task_struct
*tsk
)
227 return tsk
->sessionid
;
230 extern void __audit_ipc_obj(struct kern_ipc_perm
*ipcp
);
231 extern void __audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
);
232 extern void __audit_bprm(struct linux_binprm
*bprm
);
233 extern int __audit_socketcall(int nargs
, unsigned long *args
);
234 extern int __audit_sockaddr(int len
, void *addr
);
235 extern void __audit_fd_pair(int fd1
, int fd2
);
236 extern void __audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
);
237 extern void __audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
);
238 extern void __audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
);
239 extern void __audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
);
240 extern int __audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
241 const struct cred
*new,
242 const struct cred
*old
);
243 extern void __audit_log_capset(const struct cred
*new, const struct cred
*old
);
244 extern void __audit_mmap_fd(int fd
, int flags
);
246 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
248 if (unlikely(!audit_dummy_context()))
249 __audit_ipc_obj(ipcp
);
251 static inline void audit_fd_pair(int fd1
, int fd2
)
253 if (unlikely(!audit_dummy_context()))
254 __audit_fd_pair(fd1
, fd2
);
256 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
)
258 if (unlikely(!audit_dummy_context()))
259 __audit_ipc_set_perm(qbytes
, uid
, gid
, mode
);
261 static inline void audit_bprm(struct linux_binprm
*bprm
)
263 if (unlikely(!audit_dummy_context()))
266 static inline int audit_socketcall(int nargs
, unsigned long *args
)
268 if (unlikely(!audit_dummy_context()))
269 return __audit_socketcall(nargs
, args
);
272 static inline int audit_sockaddr(int len
, void *addr
)
274 if (unlikely(!audit_dummy_context()))
275 return __audit_sockaddr(len
, addr
);
278 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
280 if (unlikely(!audit_dummy_context()))
281 __audit_mq_open(oflag
, mode
, attr
);
283 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
)
285 if (unlikely(!audit_dummy_context()))
286 __audit_mq_sendrecv(mqdes
, msg_len
, msg_prio
, abs_timeout
);
288 static inline void audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
)
290 if (unlikely(!audit_dummy_context()))
291 __audit_mq_notify(mqdes
, notification
);
293 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
295 if (unlikely(!audit_dummy_context()))
296 __audit_mq_getsetattr(mqdes
, mqstat
);
299 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
300 const struct cred
*new,
301 const struct cred
*old
)
303 if (unlikely(!audit_dummy_context()))
304 return __audit_log_bprm_fcaps(bprm
, new, old
);
308 static inline void audit_log_capset(const struct cred
*new,
309 const struct cred
*old
)
311 if (unlikely(!audit_dummy_context()))
312 __audit_log_capset(new, old
);
315 static inline void audit_mmap_fd(int fd
, int flags
)
317 if (unlikely(!audit_dummy_context()))
318 __audit_mmap_fd(fd
, flags
);
321 extern int audit_n_rules
;
322 extern int audit_signals
;
323 #else /* CONFIG_AUDITSYSCALL */
324 static inline int audit_alloc(struct task_struct
*task
)
328 static inline void audit_free(struct task_struct
*task
)
330 static inline void audit_syscall_entry(int major
, unsigned long a0
,
331 unsigned long a1
, unsigned long a2
,
334 static inline void audit_syscall_exit(void *pt_regs
)
336 static inline int audit_dummy_context(void)
340 static inline struct filename
*audit_reusename(const __user
char *name
)
344 static inline void audit_getname(struct filename
*name
)
346 static inline void audit_putname(struct filename
*name
)
348 static inline void __audit_inode(struct filename
*name
,
349 const struct dentry
*dentry
,
352 static inline void __audit_inode_child(const struct inode
*parent
,
353 const struct dentry
*dentry
,
354 const unsigned char type
)
356 static inline void audit_inode(struct filename
*name
,
357 const struct dentry
*dentry
,
360 static inline void audit_inode_parent_hidden(struct filename
*name
,
361 const struct dentry
*dentry
)
363 static inline void audit_inode_child(const struct inode
*parent
,
364 const struct dentry
*dentry
,
365 const unsigned char type
)
367 static inline void audit_core_dumps(long signr
)
369 static inline void __audit_seccomp(unsigned long syscall
, long signr
, int code
)
371 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
373 static inline int auditsc_get_stamp(struct audit_context
*ctx
,
374 struct timespec
*t
, unsigned int *serial
)
378 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
382 static inline unsigned int audit_get_sessionid(struct task_struct
*tsk
)
386 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
388 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
,
389 gid_t gid
, umode_t mode
)
391 static inline void audit_bprm(struct linux_binprm
*bprm
)
393 static inline int audit_socketcall(int nargs
, unsigned long *args
)
397 static inline void audit_fd_pair(int fd1
, int fd2
)
399 static inline int audit_sockaddr(int len
, void *addr
)
403 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
405 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
,
406 unsigned int msg_prio
,
407 const struct timespec
*abs_timeout
)
409 static inline void audit_mq_notify(mqd_t mqdes
,
410 const struct sigevent
*notification
)
412 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
414 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
415 const struct cred
*new,
416 const struct cred
*old
)
420 static inline void audit_log_capset(const struct cred
*new,
421 const struct cred
*old
)
423 static inline void audit_mmap_fd(int fd
, int flags
)
425 static inline void audit_ptrace(struct task_struct
*t
)
427 #define audit_n_rules 0
428 #define audit_signals 0
429 #endif /* CONFIG_AUDITSYSCALL */
431 static inline bool audit_loginuid_set(struct task_struct
*tsk
)
433 return uid_valid(audit_get_loginuid(tsk
));
437 /* These are defined in audit.c */
439 extern __printf(4, 5)
440 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
441 const char *fmt
, ...);
443 extern struct audit_buffer
*audit_log_start(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
);
444 extern __printf(2, 3)
445 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...);
446 extern void audit_log_end(struct audit_buffer
*ab
);
447 extern int audit_string_contains_control(const char *string
,
449 extern void audit_log_n_hex(struct audit_buffer
*ab
,
450 const unsigned char *buf
,
452 extern void audit_log_n_string(struct audit_buffer
*ab
,
455 extern void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
458 extern void audit_log_untrustedstring(struct audit_buffer
*ab
,
460 extern void audit_log_d_path(struct audit_buffer
*ab
,
462 const struct path
*path
);
463 extern void audit_log_key(struct audit_buffer
*ab
,
465 extern void audit_log_link_denied(const char *operation
,
467 extern void audit_log_lost(const char *message
);
468 #ifdef CONFIG_SECURITY
469 extern void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
);
471 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
475 extern int audit_log_task_context(struct audit_buffer
*ab
);
476 extern void audit_log_task_info(struct audit_buffer
*ab
,
477 struct task_struct
*tsk
);
479 extern int audit_update_lsm_rules(void);
481 /* Private API (for audit.c only) */
482 extern int audit_filter_user(int type
);
483 extern int audit_filter_type(int type
);
484 extern int audit_rule_change(int type
, __u32 portid
, int seq
,
485 void *data
, size_t datasz
);
486 extern int audit_list_rules_send(struct sk_buff
*request_skb
, int seq
);
488 extern u32 audit_enabled
;
489 #else /* CONFIG_AUDIT */
490 static inline __printf(4, 5)
491 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
492 const char *fmt
, ...)
494 static inline struct audit_buffer
*audit_log_start(struct audit_context
*ctx
,
495 gfp_t gfp_mask
, int type
)
499 static inline __printf(2, 3)
500 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...)
502 static inline void audit_log_end(struct audit_buffer
*ab
)
504 static inline void audit_log_n_hex(struct audit_buffer
*ab
,
505 const unsigned char *buf
, size_t len
)
507 static inline void audit_log_n_string(struct audit_buffer
*ab
,
508 const char *buf
, size_t n
)
510 static inline void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
511 const char *string
, size_t n
)
513 static inline void audit_log_untrustedstring(struct audit_buffer
*ab
,
516 static inline void audit_log_d_path(struct audit_buffer
*ab
,
518 const struct path
*path
)
520 static inline void audit_log_key(struct audit_buffer
*ab
, char *key
)
522 static inline void audit_log_link_denied(const char *string
,
523 const struct path
*link
)
525 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
527 static inline int audit_log_task_context(struct audit_buffer
*ab
)
531 static inline void audit_log_task_info(struct audit_buffer
*ab
,
532 struct task_struct
*tsk
)
534 #define audit_enabled 0
535 #endif /* CONFIG_AUDIT */
536 static inline void audit_log_string(struct audit_buffer
*ab
, const char *buf
)
538 audit_log_n_string(ab
, buf
, strlen(buf
));