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 */
77 extern int is_audit_feature_set(int which
);
79 extern int __init
audit_register_class(int class, unsigned *list
);
80 extern int audit_classify_syscall(int abi
, unsigned syscall
);
81 extern int audit_classify_arch(int arch
);
82 /* only for compat system calls */
83 extern unsigned compat_write_class
[];
84 extern unsigned compat_read_class
[];
85 extern unsigned compat_dir_class
[];
86 extern unsigned compat_chattr_class
[];
87 extern unsigned compat_signal_class
[];
89 extern int __weak
audit_classify_compat_syscall(int abi
, unsigned syscall
);
91 /* audit_names->type values */
92 #define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
93 #define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
94 #define AUDIT_TYPE_PARENT 2 /* a parent audit record */
95 #define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
96 #define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
98 /* maximized args number that audit_socketcall can process */
99 #define AUDITSC_ARGS 6
103 extern void audit_log_session_info(struct audit_buffer
*ab
);
105 #ifdef CONFIG_AUDIT_COMPAT_GENERIC
106 #define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
108 #define audit_is_compat(arch) false
111 #ifdef CONFIG_AUDITSYSCALL
112 /* These are defined in auditsc.c */
114 extern int audit_alloc(struct task_struct
*task
);
115 extern void __audit_free(struct task_struct
*task
);
116 extern void __audit_syscall_entry(int arch
,
117 int major
, unsigned long a0
, unsigned long a1
,
118 unsigned long a2
, unsigned long a3
);
119 extern void __audit_syscall_exit(int ret_success
, long ret_value
);
120 extern struct filename
*__audit_reusename(const __user
char *uptr
);
121 extern void __audit_getname(struct filename
*name
);
122 extern void audit_putname(struct filename
*name
);
124 #define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
125 #define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
126 extern void __audit_inode(struct filename
*name
, const struct dentry
*dentry
,
128 extern void __audit_inode_child(const struct inode
*parent
,
129 const struct dentry
*dentry
,
130 const unsigned char type
);
131 extern void __audit_seccomp(unsigned long syscall
, long signr
, int code
);
132 extern void __audit_ptrace(struct task_struct
*t
);
134 static inline int audit_dummy_context(void)
136 void *p
= current
->audit_context
;
137 return !p
|| *(int *)p
;
139 static inline void audit_free(struct task_struct
*task
)
141 if (unlikely(task
->audit_context
))
144 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
145 unsigned long a1
, unsigned long a2
,
148 if (unlikely(current
->audit_context
))
149 __audit_syscall_entry(arch
, major
, a0
, a1
, a2
, a3
);
151 static inline void audit_syscall_exit(void *pt_regs
)
153 if (unlikely(current
->audit_context
)) {
154 int success
= is_syscall_success(pt_regs
);
155 long return_code
= regs_return_value(pt_regs
);
157 __audit_syscall_exit(success
, return_code
);
160 static inline struct filename
*audit_reusename(const __user
char *name
)
162 if (unlikely(!audit_dummy_context()))
163 return __audit_reusename(name
);
166 static inline void audit_getname(struct filename
*name
)
168 if (unlikely(!audit_dummy_context()))
169 __audit_getname(name
);
171 static inline void audit_inode(struct filename
*name
,
172 const struct dentry
*dentry
,
173 unsigned int parent
) {
174 if (unlikely(!audit_dummy_context())) {
175 unsigned int flags
= 0;
177 flags
|= AUDIT_INODE_PARENT
;
178 __audit_inode(name
, dentry
, flags
);
181 static inline void audit_inode_parent_hidden(struct filename
*name
,
182 const struct dentry
*dentry
)
184 if (unlikely(!audit_dummy_context()))
185 __audit_inode(name
, dentry
,
186 AUDIT_INODE_PARENT
| AUDIT_INODE_HIDDEN
);
188 static inline void audit_inode_child(const struct inode
*parent
,
189 const struct dentry
*dentry
,
190 const unsigned char type
) {
191 if (unlikely(!audit_dummy_context()))
192 __audit_inode_child(parent
, dentry
, type
);
194 void audit_core_dumps(long signr
);
196 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
198 /* Force a record to be reported if a signal was delivered. */
199 if (signr
|| unlikely(!audit_dummy_context()))
200 __audit_seccomp(syscall
, signr
, code
);
203 static inline void audit_ptrace(struct task_struct
*t
)
205 if (unlikely(!audit_dummy_context()))
209 /* Private API (for audit.c only) */
210 extern unsigned int audit_serial(void);
211 extern int auditsc_get_stamp(struct audit_context
*ctx
,
212 struct timespec
*t
, unsigned int *serial
);
213 extern int audit_set_loginuid(kuid_t loginuid
);
215 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
217 return tsk
->loginuid
;
220 static inline unsigned int audit_get_sessionid(struct task_struct
*tsk
)
222 return tsk
->sessionid
;
225 extern void __audit_ipc_obj(struct kern_ipc_perm
*ipcp
);
226 extern void __audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
);
227 extern void __audit_bprm(struct linux_binprm
*bprm
);
228 extern int __audit_socketcall(int nargs
, unsigned long *args
);
229 extern int __audit_sockaddr(int len
, void *addr
);
230 extern void __audit_fd_pair(int fd1
, int fd2
);
231 extern void __audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
);
232 extern void __audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
);
233 extern void __audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
);
234 extern void __audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
);
235 extern int __audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
236 const struct cred
*new,
237 const struct cred
*old
);
238 extern void __audit_log_capset(const struct cred
*new, const struct cred
*old
);
239 extern void __audit_mmap_fd(int fd
, int flags
);
241 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
243 if (unlikely(!audit_dummy_context()))
244 __audit_ipc_obj(ipcp
);
246 static inline void audit_fd_pair(int fd1
, int fd2
)
248 if (unlikely(!audit_dummy_context()))
249 __audit_fd_pair(fd1
, fd2
);
251 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
)
253 if (unlikely(!audit_dummy_context()))
254 __audit_ipc_set_perm(qbytes
, uid
, gid
, mode
);
256 static inline void audit_bprm(struct linux_binprm
*bprm
)
258 if (unlikely(!audit_dummy_context()))
261 static inline int audit_socketcall(int nargs
, unsigned long *args
)
263 if (unlikely(!audit_dummy_context()))
264 return __audit_socketcall(nargs
, args
);
267 static inline int audit_sockaddr(int len
, void *addr
)
269 if (unlikely(!audit_dummy_context()))
270 return __audit_sockaddr(len
, addr
);
273 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
275 if (unlikely(!audit_dummy_context()))
276 __audit_mq_open(oflag
, mode
, attr
);
278 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
)
280 if (unlikely(!audit_dummy_context()))
281 __audit_mq_sendrecv(mqdes
, msg_len
, msg_prio
, abs_timeout
);
283 static inline void audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
)
285 if (unlikely(!audit_dummy_context()))
286 __audit_mq_notify(mqdes
, notification
);
288 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
290 if (unlikely(!audit_dummy_context()))
291 __audit_mq_getsetattr(mqdes
, mqstat
);
294 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
295 const struct cred
*new,
296 const struct cred
*old
)
298 if (unlikely(!audit_dummy_context()))
299 return __audit_log_bprm_fcaps(bprm
, new, old
);
303 static inline void audit_log_capset(const struct cred
*new,
304 const struct cred
*old
)
306 if (unlikely(!audit_dummy_context()))
307 __audit_log_capset(new, old
);
310 static inline void audit_mmap_fd(int fd
, int flags
)
312 if (unlikely(!audit_dummy_context()))
313 __audit_mmap_fd(fd
, flags
);
316 extern int audit_n_rules
;
317 extern int audit_signals
;
318 #else /* CONFIG_AUDITSYSCALL */
319 static inline int audit_alloc(struct task_struct
*task
)
323 static inline void audit_free(struct task_struct
*task
)
325 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
326 unsigned long a1
, unsigned long a2
,
329 static inline void audit_syscall_exit(void *pt_regs
)
331 static inline int audit_dummy_context(void)
335 static inline struct filename
*audit_reusename(const __user
char *name
)
339 static inline void audit_getname(struct filename
*name
)
341 static inline void audit_putname(struct filename
*name
)
343 static inline void __audit_inode(struct filename
*name
,
344 const struct dentry
*dentry
,
347 static inline void __audit_inode_child(const struct inode
*parent
,
348 const struct dentry
*dentry
,
349 const unsigned char type
)
351 static inline void audit_inode(struct filename
*name
,
352 const struct dentry
*dentry
,
355 static inline void audit_inode_parent_hidden(struct filename
*name
,
356 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_core_dumps(long signr
)
364 static inline void __audit_seccomp(unsigned long syscall
, long signr
, int code
)
366 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
368 static inline int auditsc_get_stamp(struct audit_context
*ctx
,
369 struct timespec
*t
, unsigned int *serial
)
373 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
377 static inline unsigned int audit_get_sessionid(struct task_struct
*tsk
)
381 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
383 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
,
384 gid_t gid
, umode_t mode
)
386 static inline void audit_bprm(struct linux_binprm
*bprm
)
388 static inline int audit_socketcall(int nargs
, unsigned long *args
)
392 static inline void audit_fd_pair(int fd1
, int fd2
)
394 static inline int audit_sockaddr(int len
, void *addr
)
398 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
400 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
,
401 unsigned int msg_prio
,
402 const struct timespec
*abs_timeout
)
404 static inline void audit_mq_notify(mqd_t mqdes
,
405 const struct sigevent
*notification
)
407 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
409 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
410 const struct cred
*new,
411 const struct cred
*old
)
415 static inline void audit_log_capset(const struct cred
*new,
416 const struct cred
*old
)
418 static inline void audit_mmap_fd(int fd
, int flags
)
420 static inline void audit_ptrace(struct task_struct
*t
)
422 #define audit_n_rules 0
423 #define audit_signals 0
424 #endif /* CONFIG_AUDITSYSCALL */
426 static inline bool audit_loginuid_set(struct task_struct
*tsk
)
428 return uid_valid(audit_get_loginuid(tsk
));
432 /* These are defined in audit.c */
434 extern __printf(4, 5)
435 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
436 const char *fmt
, ...);
438 extern struct audit_buffer
*audit_log_start(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
);
439 extern __printf(2, 3)
440 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...);
441 extern void audit_log_end(struct audit_buffer
*ab
);
442 extern int audit_string_contains_control(const char *string
,
444 extern void audit_log_n_hex(struct audit_buffer
*ab
,
445 const unsigned char *buf
,
447 extern void audit_log_n_string(struct audit_buffer
*ab
,
450 extern void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
453 extern void audit_log_untrustedstring(struct audit_buffer
*ab
,
455 extern void audit_log_d_path(struct audit_buffer
*ab
,
457 const struct path
*path
);
458 extern void audit_log_key(struct audit_buffer
*ab
,
460 extern void audit_log_link_denied(const char *operation
,
462 extern void audit_log_lost(const char *message
);
463 #ifdef CONFIG_SECURITY
464 extern void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
);
466 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
470 extern int audit_log_task_context(struct audit_buffer
*ab
);
471 extern void audit_log_task_info(struct audit_buffer
*ab
,
472 struct task_struct
*tsk
);
474 extern int audit_update_lsm_rules(void);
476 /* Private API (for audit.c only) */
477 extern int audit_filter_user(int type
);
478 extern int audit_filter_type(int type
);
479 extern int audit_rule_change(int type
, __u32 portid
, int seq
,
480 void *data
, size_t datasz
);
481 extern int audit_list_rules_send(struct sk_buff
*request_skb
, int seq
);
483 extern u32 audit_enabled
;
484 #else /* CONFIG_AUDIT */
485 static inline __printf(4, 5)
486 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
487 const char *fmt
, ...)
489 static inline struct audit_buffer
*audit_log_start(struct audit_context
*ctx
,
490 gfp_t gfp_mask
, int type
)
494 static inline __printf(2, 3)
495 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...)
497 static inline void audit_log_end(struct audit_buffer
*ab
)
499 static inline void audit_log_n_hex(struct audit_buffer
*ab
,
500 const unsigned char *buf
, size_t len
)
502 static inline void audit_log_n_string(struct audit_buffer
*ab
,
503 const char *buf
, size_t n
)
505 static inline void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
506 const char *string
, size_t n
)
508 static inline void audit_log_untrustedstring(struct audit_buffer
*ab
,
511 static inline void audit_log_d_path(struct audit_buffer
*ab
,
513 const struct path
*path
)
515 static inline void audit_log_key(struct audit_buffer
*ab
, char *key
)
517 static inline void audit_log_link_denied(const char *string
,
518 const struct path
*link
)
520 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
522 static inline int audit_log_task_context(struct audit_buffer
*ab
)
526 static inline void audit_log_task_info(struct audit_buffer
*ab
,
527 struct task_struct
*tsk
)
529 #define audit_enabled 0
530 #endif /* CONFIG_AUDIT */
531 static inline void audit_log_string(struct audit_buffer
*ab
, const char *buf
)
533 audit_log_n_string(ab
, buf
, strlen(buf
));
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