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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 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_file(const struct file
*);
134 extern void __audit_inode_child(const struct inode
*parent
,
135 const struct dentry
*dentry
,
136 const unsigned char type
);
137 extern void __audit_seccomp(unsigned long syscall
, long signr
, int code
);
138 extern void __audit_ptrace(struct task_struct
*t
);
140 static inline int audit_dummy_context(void)
142 void *p
= current
->audit_context
;
143 return !p
|| *(int *)p
;
145 static inline void audit_free(struct task_struct
*task
)
147 if (unlikely(task
->audit_context
))
150 static inline void audit_syscall_entry(int major
, unsigned long a0
,
151 unsigned long a1
, unsigned long a2
,
154 if (unlikely(current
->audit_context
))
155 __audit_syscall_entry(major
, a0
, a1
, a2
, a3
);
157 static inline void audit_syscall_exit(void *pt_regs
)
159 if (unlikely(current
->audit_context
)) {
160 int success
= is_syscall_success(pt_regs
);
161 long return_code
= regs_return_value(pt_regs
);
163 __audit_syscall_exit(success
, return_code
);
166 static inline struct filename
*audit_reusename(const __user
char *name
)
168 if (unlikely(!audit_dummy_context()))
169 return __audit_reusename(name
);
172 static inline void audit_getname(struct filename
*name
)
174 if (unlikely(!audit_dummy_context()))
175 __audit_getname(name
);
177 static inline void audit_inode(struct filename
*name
,
178 const struct dentry
*dentry
,
179 unsigned int parent
) {
180 if (unlikely(!audit_dummy_context())) {
181 unsigned int flags
= 0;
183 flags
|= AUDIT_INODE_PARENT
;
184 __audit_inode(name
, dentry
, flags
);
187 static inline void audit_file(struct file
*file
)
189 if (unlikely(!audit_dummy_context()))
192 static inline void audit_inode_parent_hidden(struct filename
*name
,
193 const struct dentry
*dentry
)
195 if (unlikely(!audit_dummy_context()))
196 __audit_inode(name
, dentry
,
197 AUDIT_INODE_PARENT
| AUDIT_INODE_HIDDEN
);
199 static inline void audit_inode_child(const struct inode
*parent
,
200 const struct dentry
*dentry
,
201 const unsigned char type
) {
202 if (unlikely(!audit_dummy_context()))
203 __audit_inode_child(parent
, dentry
, type
);
205 void audit_core_dumps(long signr
);
207 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
209 /* Force a record to be reported if a signal was delivered. */
210 if (signr
|| unlikely(!audit_dummy_context()))
211 __audit_seccomp(syscall
, signr
, code
);
214 static inline void audit_ptrace(struct task_struct
*t
)
216 if (unlikely(!audit_dummy_context()))
220 /* Private API (for audit.c only) */
221 extern unsigned int audit_serial(void);
222 extern int auditsc_get_stamp(struct audit_context
*ctx
,
223 struct timespec
*t
, unsigned int *serial
);
224 extern int audit_set_loginuid(kuid_t loginuid
);
226 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
228 return tsk
->loginuid
;
231 static inline unsigned int audit_get_sessionid(struct task_struct
*tsk
)
233 return tsk
->sessionid
;
236 extern void __audit_ipc_obj(struct kern_ipc_perm
*ipcp
);
237 extern void __audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
);
238 extern void __audit_bprm(struct linux_binprm
*bprm
);
239 extern int __audit_socketcall(int nargs
, unsigned long *args
);
240 extern int __audit_sockaddr(int len
, void *addr
);
241 extern void __audit_fd_pair(int fd1
, int fd2
);
242 extern void __audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
);
243 extern void __audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
);
244 extern void __audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
);
245 extern void __audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
);
246 extern int __audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
247 const struct cred
*new,
248 const struct cred
*old
);
249 extern void __audit_log_capset(const struct cred
*new, const struct cred
*old
);
250 extern void __audit_mmap_fd(int fd
, int flags
);
252 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
254 if (unlikely(!audit_dummy_context()))
255 __audit_ipc_obj(ipcp
);
257 static inline void audit_fd_pair(int fd1
, int fd2
)
259 if (unlikely(!audit_dummy_context()))
260 __audit_fd_pair(fd1
, fd2
);
262 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
)
264 if (unlikely(!audit_dummy_context()))
265 __audit_ipc_set_perm(qbytes
, uid
, gid
, mode
);
267 static inline void audit_bprm(struct linux_binprm
*bprm
)
269 if (unlikely(!audit_dummy_context()))
272 static inline int audit_socketcall(int nargs
, unsigned long *args
)
274 if (unlikely(!audit_dummy_context()))
275 return __audit_socketcall(nargs
, args
);
278 static inline int audit_sockaddr(int len
, void *addr
)
280 if (unlikely(!audit_dummy_context()))
281 return __audit_sockaddr(len
, addr
);
284 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
286 if (unlikely(!audit_dummy_context()))
287 __audit_mq_open(oflag
, mode
, attr
);
289 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
)
291 if (unlikely(!audit_dummy_context()))
292 __audit_mq_sendrecv(mqdes
, msg_len
, msg_prio
, abs_timeout
);
294 static inline void audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
)
296 if (unlikely(!audit_dummy_context()))
297 __audit_mq_notify(mqdes
, notification
);
299 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
301 if (unlikely(!audit_dummy_context()))
302 __audit_mq_getsetattr(mqdes
, mqstat
);
305 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
306 const struct cred
*new,
307 const struct cred
*old
)
309 if (unlikely(!audit_dummy_context()))
310 return __audit_log_bprm_fcaps(bprm
, new, old
);
314 static inline void audit_log_capset(const struct cred
*new,
315 const struct cred
*old
)
317 if (unlikely(!audit_dummy_context()))
318 __audit_log_capset(new, old
);
321 static inline void audit_mmap_fd(int fd
, int flags
)
323 if (unlikely(!audit_dummy_context()))
324 __audit_mmap_fd(fd
, flags
);
327 extern int audit_n_rules
;
328 extern int audit_signals
;
329 #else /* CONFIG_AUDITSYSCALL */
330 static inline int audit_alloc(struct task_struct
*task
)
334 static inline void audit_free(struct task_struct
*task
)
336 static inline void audit_syscall_entry(int major
, unsigned long a0
,
337 unsigned long a1
, unsigned long a2
,
340 static inline void audit_syscall_exit(void *pt_regs
)
342 static inline int audit_dummy_context(void)
346 static inline struct filename
*audit_reusename(const __user
char *name
)
350 static inline void audit_getname(struct filename
*name
)
352 static inline void audit_putname(struct filename
*name
)
354 static inline void __audit_inode(struct filename
*name
,
355 const struct dentry
*dentry
,
358 static inline void __audit_inode_child(const struct inode
*parent
,
359 const struct dentry
*dentry
,
360 const unsigned char type
)
362 static inline void audit_inode(struct filename
*name
,
363 const struct dentry
*dentry
,
366 static inline void audit_file(struct file
*file
)
369 static inline void audit_inode_parent_hidden(struct filename
*name
,
370 const struct dentry
*dentry
)
372 static inline void audit_inode_child(const struct inode
*parent
,
373 const struct dentry
*dentry
,
374 const unsigned char type
)
376 static inline void audit_core_dumps(long signr
)
378 static inline void __audit_seccomp(unsigned long syscall
, long signr
, int code
)
380 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
382 static inline int auditsc_get_stamp(struct audit_context
*ctx
,
383 struct timespec
*t
, unsigned int *serial
)
387 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
391 static inline unsigned int audit_get_sessionid(struct task_struct
*tsk
)
395 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
397 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
,
398 gid_t gid
, umode_t mode
)
400 static inline void audit_bprm(struct linux_binprm
*bprm
)
402 static inline int audit_socketcall(int nargs
, unsigned long *args
)
406 static inline void audit_fd_pair(int fd1
, int fd2
)
408 static inline int audit_sockaddr(int len
, void *addr
)
412 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
414 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
,
415 unsigned int msg_prio
,
416 const struct timespec
*abs_timeout
)
418 static inline void audit_mq_notify(mqd_t mqdes
,
419 const struct sigevent
*notification
)
421 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
423 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
424 const struct cred
*new,
425 const struct cred
*old
)
429 static inline void audit_log_capset(const struct cred
*new,
430 const struct cred
*old
)
432 static inline void audit_mmap_fd(int fd
, int flags
)
434 static inline void audit_ptrace(struct task_struct
*t
)
436 #define audit_n_rules 0
437 #define audit_signals 0
438 #endif /* CONFIG_AUDITSYSCALL */
440 static inline bool audit_loginuid_set(struct task_struct
*tsk
)
442 return uid_valid(audit_get_loginuid(tsk
));
446 /* These are defined in audit.c */
448 extern __printf(4, 5)
449 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
450 const char *fmt
, ...);
452 extern struct audit_buffer
*audit_log_start(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
);
453 extern __printf(2, 3)
454 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...);
455 extern void audit_log_end(struct audit_buffer
*ab
);
456 extern int audit_string_contains_control(const char *string
,
458 extern void audit_log_n_hex(struct audit_buffer
*ab
,
459 const unsigned char *buf
,
461 extern void audit_log_n_string(struct audit_buffer
*ab
,
464 extern void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
467 extern void audit_log_untrustedstring(struct audit_buffer
*ab
,
469 extern void audit_log_d_path(struct audit_buffer
*ab
,
471 const struct path
*path
);
472 extern void audit_log_key(struct audit_buffer
*ab
,
474 extern void audit_log_link_denied(const char *operation
,
476 extern void audit_log_lost(const char *message
);
477 #ifdef CONFIG_SECURITY
478 extern void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
);
480 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
484 extern int audit_log_task_context(struct audit_buffer
*ab
);
485 extern void audit_log_task_info(struct audit_buffer
*ab
,
486 struct task_struct
*tsk
);
488 extern int audit_update_lsm_rules(void);
490 /* Private API (for audit.c only) */
491 extern int audit_filter_user(int type
);
492 extern int audit_filter_type(int type
);
493 extern int audit_rule_change(int type
, __u32 portid
, int seq
,
494 void *data
, size_t datasz
);
495 extern int audit_list_rules_send(struct sk_buff
*request_skb
, int seq
);
497 extern u32 audit_enabled
;
498 #else /* CONFIG_AUDIT */
499 static inline __printf(4, 5)
500 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
501 const char *fmt
, ...)
503 static inline struct audit_buffer
*audit_log_start(struct audit_context
*ctx
,
504 gfp_t gfp_mask
, int type
)
508 static inline __printf(2, 3)
509 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...)
511 static inline void audit_log_end(struct audit_buffer
*ab
)
513 static inline void audit_log_n_hex(struct audit_buffer
*ab
,
514 const unsigned char *buf
, size_t len
)
516 static inline void audit_log_n_string(struct audit_buffer
*ab
,
517 const char *buf
, size_t n
)
519 static inline void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
520 const char *string
, size_t n
)
522 static inline void audit_log_untrustedstring(struct audit_buffer
*ab
,
525 static inline void audit_log_d_path(struct audit_buffer
*ab
,
527 const struct path
*path
)
529 static inline void audit_log_key(struct audit_buffer
*ab
, char *key
)
531 static inline void audit_log_link_denied(const char *string
,
532 const struct path
*link
)
534 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
536 static inline int audit_log_task_context(struct audit_buffer
*ab
)
540 static inline void audit_log_task_info(struct audit_buffer
*ab
,
541 struct task_struct
*tsk
)
543 #define audit_enabled 0
544 #endif /* CONFIG_AUDIT */
545 static inline void audit_log_string(struct audit_buffer
*ab
, const char *buf
)
547 audit_log_n_string(ab
, buf
, strlen(buf
));