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
;
54 u32 mask
[AUDIT_BITMASK_SIZE
];
55 u32 buflen
; /* for data alloc on list rules */
57 char *filterkey
; /* ties events to rules */
58 struct audit_field
*fields
;
59 struct audit_field
*arch_f
; /* quick access to arch field */
60 struct audit_field
*inode_f
; /* quick access to an inode field */
61 struct audit_watch
*watch
; /* associated watch */
62 struct audit_tree
*tree
; /* associated watched tree */
63 struct list_head rlist
; /* entry in audit_{watch,tree}.rules list */
64 struct list_head list
; /* for AUDIT_LIST* purposes only */
68 /* Flag to indicate legacy AUDIT_LOGINUID unset usage */
69 #define AUDIT_LOGINUID_LEGACY 0x1
85 extern int is_audit_feature_set(int which
);
87 extern int __init
audit_register_class(int class, unsigned *list
);
88 extern int audit_classify_syscall(int abi
, unsigned syscall
);
89 extern int audit_classify_arch(int arch
);
90 /* only for compat system calls */
91 extern unsigned compat_write_class
[];
92 extern unsigned compat_read_class
[];
93 extern unsigned compat_dir_class
[];
94 extern unsigned compat_chattr_class
[];
95 extern unsigned compat_signal_class
[];
97 extern int audit_classify_compat_syscall(int abi
, unsigned syscall
);
99 /* audit_names->type values */
100 #define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
101 #define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
102 #define AUDIT_TYPE_PARENT 2 /* a parent audit record */
103 #define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
104 #define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
106 /* maximized args number that audit_socketcall can process */
107 #define AUDITSC_ARGS 6
111 extern void audit_log_session_info(struct audit_buffer
*ab
);
113 #ifdef CONFIG_AUDIT_COMPAT_GENERIC
114 #define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
116 #define audit_is_compat(arch) false
119 #ifdef CONFIG_AUDITSYSCALL
120 #include <asm/syscall.h> /* for syscall_get_arch() */
122 /* These are defined in auditsc.c */
124 extern int audit_alloc(struct task_struct
*task
);
125 extern void __audit_free(struct task_struct
*task
);
126 extern void __audit_syscall_entry(int major
, unsigned long a0
, unsigned long a1
,
127 unsigned long a2
, unsigned long a3
);
128 extern void __audit_syscall_exit(int ret_success
, long ret_value
);
129 extern struct filename
*__audit_reusename(const __user
char *uptr
);
130 extern void __audit_getname(struct filename
*name
);
131 extern void audit_putname(struct filename
*name
);
133 #define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
134 #define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
135 extern void __audit_inode(struct filename
*name
, const struct dentry
*dentry
,
137 extern void __audit_file(const struct file
*);
138 extern void __audit_inode_child(const struct inode
*parent
,
139 const struct dentry
*dentry
,
140 const unsigned char type
);
141 extern void __audit_seccomp(unsigned long syscall
, long signr
, int code
);
142 extern void __audit_ptrace(struct task_struct
*t
);
144 static inline int audit_dummy_context(void)
146 void *p
= current
->audit_context
;
147 return !p
|| *(int *)p
;
149 static inline void audit_free(struct task_struct
*task
)
151 if (unlikely(task
->audit_context
))
154 static inline void audit_syscall_entry(int major
, unsigned long a0
,
155 unsigned long a1
, unsigned long a2
,
158 if (unlikely(current
->audit_context
))
159 __audit_syscall_entry(major
, a0
, a1
, a2
, a3
);
161 static inline void audit_syscall_exit(void *pt_regs
)
163 if (unlikely(current
->audit_context
)) {
164 int success
= is_syscall_success(pt_regs
);
165 long return_code
= regs_return_value(pt_regs
);
167 __audit_syscall_exit(success
, return_code
);
170 static inline struct filename
*audit_reusename(const __user
char *name
)
172 if (unlikely(!audit_dummy_context()))
173 return __audit_reusename(name
);
176 static inline void audit_getname(struct filename
*name
)
178 if (unlikely(!audit_dummy_context()))
179 __audit_getname(name
);
181 static inline void audit_inode(struct filename
*name
,
182 const struct dentry
*dentry
,
183 unsigned int parent
) {
184 if (unlikely(!audit_dummy_context())) {
185 unsigned int flags
= 0;
187 flags
|= AUDIT_INODE_PARENT
;
188 __audit_inode(name
, dentry
, flags
);
191 static inline void audit_file(struct file
*file
)
193 if (unlikely(!audit_dummy_context()))
196 static inline void audit_inode_parent_hidden(struct filename
*name
,
197 const struct dentry
*dentry
)
199 if (unlikely(!audit_dummy_context()))
200 __audit_inode(name
, dentry
,
201 AUDIT_INODE_PARENT
| AUDIT_INODE_HIDDEN
);
203 static inline void audit_inode_child(const struct inode
*parent
,
204 const struct dentry
*dentry
,
205 const unsigned char type
) {
206 if (unlikely(!audit_dummy_context()))
207 __audit_inode_child(parent
, dentry
, type
);
209 void audit_core_dumps(long signr
);
211 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
213 /* Force a record to be reported if a signal was delivered. */
214 if (signr
|| unlikely(!audit_dummy_context()))
215 __audit_seccomp(syscall
, signr
, code
);
218 static inline void audit_ptrace(struct task_struct
*t
)
220 if (unlikely(!audit_dummy_context()))
224 /* Private API (for audit.c only) */
225 extern unsigned int audit_serial(void);
226 extern int auditsc_get_stamp(struct audit_context
*ctx
,
227 struct timespec
*t
, unsigned int *serial
);
228 extern int audit_set_loginuid(kuid_t loginuid
);
230 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
232 return tsk
->loginuid
;
235 static inline unsigned int audit_get_sessionid(struct task_struct
*tsk
)
237 return tsk
->sessionid
;
240 extern void __audit_ipc_obj(struct kern_ipc_perm
*ipcp
);
241 extern void __audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
);
242 extern void __audit_bprm(struct linux_binprm
*bprm
);
243 extern int __audit_socketcall(int nargs
, unsigned long *args
);
244 extern int __audit_sockaddr(int len
, void *addr
);
245 extern void __audit_fd_pair(int fd1
, int fd2
);
246 extern void __audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
);
247 extern void __audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
);
248 extern void __audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
);
249 extern void __audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
);
250 extern int __audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
251 const struct cred
*new,
252 const struct cred
*old
);
253 extern void __audit_log_capset(const struct cred
*new, const struct cred
*old
);
254 extern void __audit_mmap_fd(int fd
, int flags
);
256 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
258 if (unlikely(!audit_dummy_context()))
259 __audit_ipc_obj(ipcp
);
261 static inline void audit_fd_pair(int fd1
, int fd2
)
263 if (unlikely(!audit_dummy_context()))
264 __audit_fd_pair(fd1
, fd2
);
266 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
)
268 if (unlikely(!audit_dummy_context()))
269 __audit_ipc_set_perm(qbytes
, uid
, gid
, mode
);
271 static inline void audit_bprm(struct linux_binprm
*bprm
)
273 if (unlikely(!audit_dummy_context()))
276 static inline int audit_socketcall(int nargs
, unsigned long *args
)
278 if (unlikely(!audit_dummy_context()))
279 return __audit_socketcall(nargs
, args
);
282 static inline int audit_sockaddr(int len
, void *addr
)
284 if (unlikely(!audit_dummy_context()))
285 return __audit_sockaddr(len
, addr
);
288 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
290 if (unlikely(!audit_dummy_context()))
291 __audit_mq_open(oflag
, mode
, attr
);
293 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
)
295 if (unlikely(!audit_dummy_context()))
296 __audit_mq_sendrecv(mqdes
, msg_len
, msg_prio
, abs_timeout
);
298 static inline void audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
)
300 if (unlikely(!audit_dummy_context()))
301 __audit_mq_notify(mqdes
, notification
);
303 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
305 if (unlikely(!audit_dummy_context()))
306 __audit_mq_getsetattr(mqdes
, mqstat
);
309 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
310 const struct cred
*new,
311 const struct cred
*old
)
313 if (unlikely(!audit_dummy_context()))
314 return __audit_log_bprm_fcaps(bprm
, new, old
);
318 static inline void audit_log_capset(const struct cred
*new,
319 const struct cred
*old
)
321 if (unlikely(!audit_dummy_context()))
322 __audit_log_capset(new, old
);
325 static inline void audit_mmap_fd(int fd
, int flags
)
327 if (unlikely(!audit_dummy_context()))
328 __audit_mmap_fd(fd
, flags
);
331 extern int audit_n_rules
;
332 extern int audit_signals
;
333 #else /* CONFIG_AUDITSYSCALL */
334 static inline int audit_alloc(struct task_struct
*task
)
338 static inline void audit_free(struct task_struct
*task
)
340 static inline void audit_syscall_entry(int major
, unsigned long a0
,
341 unsigned long a1
, unsigned long a2
,
344 static inline void audit_syscall_exit(void *pt_regs
)
346 static inline int audit_dummy_context(void)
350 static inline struct filename
*audit_reusename(const __user
char *name
)
354 static inline void audit_getname(struct filename
*name
)
356 static inline void audit_putname(struct filename
*name
)
358 static inline void __audit_inode(struct filename
*name
,
359 const struct dentry
*dentry
,
362 static inline void __audit_inode_child(const struct inode
*parent
,
363 const struct dentry
*dentry
,
364 const unsigned char type
)
366 static inline void audit_inode(struct filename
*name
,
367 const struct dentry
*dentry
,
370 static inline void audit_file(struct file
*file
)
373 static inline void audit_inode_parent_hidden(struct filename
*name
,
374 const struct dentry
*dentry
)
376 static inline void audit_inode_child(const struct inode
*parent
,
377 const struct dentry
*dentry
,
378 const unsigned char type
)
380 static inline void audit_core_dumps(long signr
)
382 static inline void __audit_seccomp(unsigned long syscall
, long signr
, int code
)
384 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
386 static inline int auditsc_get_stamp(struct audit_context
*ctx
,
387 struct timespec
*t
, unsigned int *serial
)
391 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
395 static inline unsigned int audit_get_sessionid(struct task_struct
*tsk
)
399 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
401 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
,
402 gid_t gid
, umode_t mode
)
404 static inline void audit_bprm(struct linux_binprm
*bprm
)
406 static inline int audit_socketcall(int nargs
, unsigned long *args
)
410 static inline void audit_fd_pair(int fd1
, int fd2
)
412 static inline int audit_sockaddr(int len
, void *addr
)
416 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
418 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
,
419 unsigned int msg_prio
,
420 const struct timespec
*abs_timeout
)
422 static inline void audit_mq_notify(mqd_t mqdes
,
423 const struct sigevent
*notification
)
425 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
427 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
428 const struct cred
*new,
429 const struct cred
*old
)
433 static inline void audit_log_capset(const struct cred
*new,
434 const struct cred
*old
)
436 static inline void audit_mmap_fd(int fd
, int flags
)
438 static inline void audit_ptrace(struct task_struct
*t
)
440 #define audit_n_rules 0
441 #define audit_signals 0
442 #endif /* CONFIG_AUDITSYSCALL */
444 static inline bool audit_loginuid_set(struct task_struct
*tsk
)
446 return uid_valid(audit_get_loginuid(tsk
));
450 /* These are defined in audit.c */
452 extern __printf(4, 5)
453 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
454 const char *fmt
, ...);
456 extern struct audit_buffer
*audit_log_start(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
);
457 extern __printf(2, 3)
458 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...);
459 extern void audit_log_end(struct audit_buffer
*ab
);
460 extern int audit_string_contains_control(const char *string
,
462 extern void audit_log_n_hex(struct audit_buffer
*ab
,
463 const unsigned char *buf
,
465 extern void audit_log_n_string(struct audit_buffer
*ab
,
468 extern void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
471 extern void audit_log_untrustedstring(struct audit_buffer
*ab
,
473 extern void audit_log_d_path(struct audit_buffer
*ab
,
475 const struct path
*path
);
476 extern void audit_log_key(struct audit_buffer
*ab
,
478 extern void audit_log_link_denied(const char *operation
,
480 extern void audit_log_lost(const char *message
);
481 #ifdef CONFIG_SECURITY
482 extern void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
);
484 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
488 extern int audit_log_task_context(struct audit_buffer
*ab
);
489 extern void audit_log_task_info(struct audit_buffer
*ab
,
490 struct task_struct
*tsk
);
492 extern int audit_update_lsm_rules(void);
494 /* Private API (for audit.c only) */
495 extern int audit_filter_user(int type
);
496 extern int audit_filter_type(int type
);
497 extern int audit_rule_change(int type
, __u32 portid
, int seq
,
498 void *data
, size_t datasz
);
499 extern int audit_list_rules_send(struct sk_buff
*request_skb
, int seq
);
501 extern u32 audit_enabled
;
502 #else /* CONFIG_AUDIT */
503 static inline __printf(4, 5)
504 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
505 const char *fmt
, ...)
507 static inline struct audit_buffer
*audit_log_start(struct audit_context
*ctx
,
508 gfp_t gfp_mask
, int type
)
512 static inline __printf(2, 3)
513 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...)
515 static inline void audit_log_end(struct audit_buffer
*ab
)
517 static inline void audit_log_n_hex(struct audit_buffer
*ab
,
518 const unsigned char *buf
, size_t len
)
520 static inline void audit_log_n_string(struct audit_buffer
*ab
,
521 const char *buf
, size_t n
)
523 static inline void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
524 const char *string
, size_t n
)
526 static inline void audit_log_untrustedstring(struct audit_buffer
*ab
,
529 static inline void audit_log_d_path(struct audit_buffer
*ab
,
531 const struct path
*path
)
533 static inline void audit_log_key(struct audit_buffer
*ab
, char *key
)
535 static inline void audit_log_link_denied(const char *string
,
536 const struct path
*link
)
538 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
540 static inline int audit_log_task_context(struct audit_buffer
*ab
)
544 static inline void audit_log_task_info(struct audit_buffer
*ab
,
545 struct task_struct
*tsk
)
547 #define audit_enabled 0
548 #endif /* CONFIG_AUDIT */
549 static inline void audit_log_string(struct audit_buffer
*ab
, const char *buf
)
551 audit_log_n_string(ab
, buf
, strlen(buf
));
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