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
;
52 u32 mask
[AUDIT_BITMASK_SIZE
];
53 u32 buflen
; /* for data alloc on list rules */
55 char *filterkey
; /* ties events to rules */
56 struct audit_field
*fields
;
57 struct audit_field
*arch_f
; /* quick access to arch field */
58 struct audit_field
*inode_f
; /* quick access to an inode field */
59 struct audit_watch
*watch
; /* associated watch */
60 struct audit_tree
*tree
; /* associated watched tree */
61 struct list_head rlist
; /* entry in audit_{watch,tree}.rules list */
62 struct list_head list
; /* for AUDIT_LIST* purposes only */
76 extern int __init
audit_register_class(int class, unsigned *list
);
77 extern int audit_classify_syscall(int abi
, unsigned syscall
);
78 extern int audit_classify_arch(int arch
);
80 /* audit_names->type values */
81 #define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
82 #define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
83 #define AUDIT_TYPE_PARENT 2 /* a parent audit record */
84 #define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
85 #define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
87 /* maximized args number that audit_socketcall can process */
88 #define AUDITSC_ARGS 6
92 extern void audit_log_session_info(struct audit_buffer
*ab
);
94 #ifdef CONFIG_AUDITSYSCALL
95 /* These are defined in auditsc.c */
97 extern int audit_alloc(struct task_struct
*task
);
98 extern void __audit_free(struct task_struct
*task
);
99 extern void __audit_syscall_entry(int arch
,
100 int major
, unsigned long a0
, unsigned long a1
,
101 unsigned long a2
, unsigned long a3
);
102 extern void __audit_syscall_exit(int ret_success
, long ret_value
);
103 extern struct filename
*__audit_reusename(const __user
char *uptr
);
104 extern void __audit_getname(struct filename
*name
);
105 extern void audit_putname(struct filename
*name
);
107 #define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
108 #define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
109 extern void __audit_inode(struct filename
*name
, const struct dentry
*dentry
,
111 extern void __audit_inode_child(const struct inode
*parent
,
112 const struct dentry
*dentry
,
113 const unsigned char type
);
114 extern void __audit_seccomp(unsigned long syscall
, long signr
, int code
);
115 extern void __audit_ptrace(struct task_struct
*t
);
117 static inline int audit_dummy_context(void)
119 void *p
= current
->audit_context
;
120 return !p
|| *(int *)p
;
122 static inline void audit_free(struct task_struct
*task
)
124 if (unlikely(task
->audit_context
))
127 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
128 unsigned long a1
, unsigned long a2
,
131 if (unlikely(current
->audit_context
))
132 __audit_syscall_entry(arch
, major
, a0
, a1
, a2
, a3
);
134 static inline void audit_syscall_exit(void *pt_regs
)
136 if (unlikely(current
->audit_context
)) {
137 int success
= is_syscall_success(pt_regs
);
138 int return_code
= regs_return_value(pt_regs
);
140 __audit_syscall_exit(success
, return_code
);
143 static inline struct filename
*audit_reusename(const __user
char *name
)
145 if (unlikely(!audit_dummy_context()))
146 return __audit_reusename(name
);
149 static inline void audit_getname(struct filename
*name
)
151 if (unlikely(!audit_dummy_context()))
152 __audit_getname(name
);
154 static inline void audit_inode(struct filename
*name
,
155 const struct dentry
*dentry
,
156 unsigned int parent
) {
157 if (unlikely(!audit_dummy_context())) {
158 unsigned int flags
= 0;
160 flags
|= AUDIT_INODE_PARENT
;
161 __audit_inode(name
, dentry
, flags
);
164 static inline void audit_inode_parent_hidden(struct filename
*name
,
165 const struct dentry
*dentry
)
167 if (unlikely(!audit_dummy_context()))
168 __audit_inode(name
, dentry
,
169 AUDIT_INODE_PARENT
| AUDIT_INODE_HIDDEN
);
171 static inline void audit_inode_child(const struct inode
*parent
,
172 const struct dentry
*dentry
,
173 const unsigned char type
) {
174 if (unlikely(!audit_dummy_context()))
175 __audit_inode_child(parent
, dentry
, type
);
177 void audit_core_dumps(long signr
);
179 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
181 /* Force a record to be reported if a signal was delivered. */
182 if (signr
|| unlikely(!audit_dummy_context()))
183 __audit_seccomp(syscall
, signr
, code
);
186 static inline void audit_ptrace(struct task_struct
*t
)
188 if (unlikely(!audit_dummy_context()))
192 /* Private API (for audit.c only) */
193 extern unsigned int audit_serial(void);
194 extern int auditsc_get_stamp(struct audit_context
*ctx
,
195 struct timespec
*t
, unsigned int *serial
);
196 extern int audit_set_loginuid(kuid_t loginuid
);
198 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
200 return tsk
->loginuid
;
203 static inline int audit_get_sessionid(struct task_struct
*tsk
)
205 return tsk
->sessionid
;
208 extern void __audit_ipc_obj(struct kern_ipc_perm
*ipcp
);
209 extern void __audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
);
210 extern int __audit_bprm(struct linux_binprm
*bprm
);
211 extern int __audit_socketcall(int nargs
, unsigned long *args
);
212 extern int __audit_sockaddr(int len
, void *addr
);
213 extern void __audit_fd_pair(int fd1
, int fd2
);
214 extern void __audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
);
215 extern void __audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
);
216 extern void __audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
);
217 extern void __audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
);
218 extern int __audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
219 const struct cred
*new,
220 const struct cred
*old
);
221 extern void __audit_log_capset(pid_t pid
, const struct cred
*new, const struct cred
*old
);
222 extern void __audit_mmap_fd(int fd
, int flags
);
224 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
226 if (unlikely(!audit_dummy_context()))
227 __audit_ipc_obj(ipcp
);
229 static inline void audit_fd_pair(int fd1
, int fd2
)
231 if (unlikely(!audit_dummy_context()))
232 __audit_fd_pair(fd1
, fd2
);
234 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
)
236 if (unlikely(!audit_dummy_context()))
237 __audit_ipc_set_perm(qbytes
, uid
, gid
, mode
);
239 static inline int audit_bprm(struct linux_binprm
*bprm
)
241 if (unlikely(!audit_dummy_context()))
242 return __audit_bprm(bprm
);
245 static inline int audit_socketcall(int nargs
, unsigned long *args
)
247 if (unlikely(!audit_dummy_context()))
248 return __audit_socketcall(nargs
, args
);
251 static inline int audit_sockaddr(int len
, void *addr
)
253 if (unlikely(!audit_dummy_context()))
254 return __audit_sockaddr(len
, addr
);
257 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
259 if (unlikely(!audit_dummy_context()))
260 __audit_mq_open(oflag
, mode
, attr
);
262 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
)
264 if (unlikely(!audit_dummy_context()))
265 __audit_mq_sendrecv(mqdes
, msg_len
, msg_prio
, abs_timeout
);
267 static inline void audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
)
269 if (unlikely(!audit_dummy_context()))
270 __audit_mq_notify(mqdes
, notification
);
272 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
274 if (unlikely(!audit_dummy_context()))
275 __audit_mq_getsetattr(mqdes
, mqstat
);
278 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
279 const struct cred
*new,
280 const struct cred
*old
)
282 if (unlikely(!audit_dummy_context()))
283 return __audit_log_bprm_fcaps(bprm
, new, old
);
287 static inline void audit_log_capset(pid_t pid
, const struct cred
*new,
288 const struct cred
*old
)
290 if (unlikely(!audit_dummy_context()))
291 __audit_log_capset(pid
, new, old
);
294 static inline void audit_mmap_fd(int fd
, int flags
)
296 if (unlikely(!audit_dummy_context()))
297 __audit_mmap_fd(fd
, flags
);
300 extern int audit_n_rules
;
301 extern int audit_signals
;
302 #else /* CONFIG_AUDITSYSCALL */
303 static inline int audit_alloc(struct task_struct
*task
)
307 static inline void audit_free(struct task_struct
*task
)
309 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
310 unsigned long a1
, unsigned long a2
,
313 static inline void audit_syscall_exit(void *pt_regs
)
315 static inline int audit_dummy_context(void)
319 static inline struct filename
*audit_reusename(const __user
char *name
)
323 static inline void audit_getname(struct filename
*name
)
325 static inline void audit_putname(struct filename
*name
)
327 static inline void __audit_inode(struct filename
*name
,
328 const struct dentry
*dentry
,
331 static inline void __audit_inode_child(const struct inode
*parent
,
332 const struct dentry
*dentry
,
333 const unsigned char type
)
335 static inline void audit_inode(struct filename
*name
,
336 const struct dentry
*dentry
,
339 static inline void audit_inode_parent_hidden(struct filename
*name
,
340 const struct dentry
*dentry
)
342 static inline void audit_inode_child(const struct inode
*parent
,
343 const struct dentry
*dentry
,
344 const unsigned char type
)
346 static inline void audit_core_dumps(long signr
)
348 static inline void __audit_seccomp(unsigned long syscall
, long signr
, int code
)
350 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
352 static inline int auditsc_get_stamp(struct audit_context
*ctx
,
353 struct timespec
*t
, unsigned int *serial
)
357 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
361 static inline int audit_get_sessionid(struct task_struct
*tsk
)
365 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
367 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
,
368 gid_t gid
, umode_t mode
)
370 static inline int audit_bprm(struct linux_binprm
*bprm
)
374 static inline int audit_socketcall(int nargs
, unsigned long *args
)
378 static inline void audit_fd_pair(int fd1
, int fd2
)
380 static inline int audit_sockaddr(int len
, void *addr
)
384 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
386 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
,
387 unsigned int msg_prio
,
388 const struct timespec
*abs_timeout
)
390 static inline void audit_mq_notify(mqd_t mqdes
,
391 const struct sigevent
*notification
)
393 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
395 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
396 const struct cred
*new,
397 const struct cred
*old
)
401 static inline void audit_log_capset(pid_t pid
, const struct cred
*new,
402 const struct cred
*old
)
404 static inline void audit_mmap_fd(int fd
, int flags
)
406 static inline void audit_ptrace(struct task_struct
*t
)
408 #define audit_n_rules 0
409 #define audit_signals 0
410 #endif /* CONFIG_AUDITSYSCALL */
412 static inline bool audit_loginuid_set(struct task_struct
*tsk
)
414 return uid_valid(audit_get_loginuid(tsk
));
418 /* These are defined in audit.c */
420 extern __printf(4, 5)
421 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
422 const char *fmt
, ...);
424 extern struct audit_buffer
*audit_log_start(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
);
425 extern __printf(2, 3)
426 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...);
427 extern void audit_log_end(struct audit_buffer
*ab
);
428 extern int audit_string_contains_control(const char *string
,
430 extern void audit_log_n_hex(struct audit_buffer
*ab
,
431 const unsigned char *buf
,
433 extern void audit_log_n_string(struct audit_buffer
*ab
,
436 extern void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
439 extern void audit_log_untrustedstring(struct audit_buffer
*ab
,
441 extern void audit_log_d_path(struct audit_buffer
*ab
,
443 const struct path
*path
);
444 extern void audit_log_key(struct audit_buffer
*ab
,
446 extern void audit_log_link_denied(const char *operation
,
448 extern void audit_log_lost(const char *message
);
449 #ifdef CONFIG_SECURITY
450 extern void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
);
452 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
456 extern int audit_log_task_context(struct audit_buffer
*ab
);
457 extern void audit_log_task_info(struct audit_buffer
*ab
,
458 struct task_struct
*tsk
);
460 extern int audit_update_lsm_rules(void);
462 /* Private API (for audit.c only) */
463 extern int audit_filter_user(int type
);
464 extern int audit_filter_type(int type
);
465 extern int audit_receive_filter(int type
, int pid
, int seq
,
466 void *data
, size_t datasz
);
467 extern int audit_enabled
;
468 #else /* CONFIG_AUDIT */
469 static inline __printf(4, 5)
470 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
471 const char *fmt
, ...)
473 static inline struct audit_buffer
*audit_log_start(struct audit_context
*ctx
,
474 gfp_t gfp_mask
, int type
)
478 static inline __printf(2, 3)
479 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...)
481 static inline void audit_log_end(struct audit_buffer
*ab
)
483 static inline void audit_log_n_hex(struct audit_buffer
*ab
,
484 const unsigned char *buf
, size_t len
)
486 static inline void audit_log_n_string(struct audit_buffer
*ab
,
487 const char *buf
, size_t n
)
489 static inline void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
490 const char *string
, size_t n
)
492 static inline void audit_log_untrustedstring(struct audit_buffer
*ab
,
495 static inline void audit_log_d_path(struct audit_buffer
*ab
,
497 const struct path
*path
)
499 static inline void audit_log_key(struct audit_buffer
*ab
, char *key
)
501 static inline void audit_log_link_denied(const char *string
,
502 const struct path
*link
)
504 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
506 static inline int audit_log_task_context(struct audit_buffer
*ab
)
510 static inline void audit_log_task_info(struct audit_buffer
*ab
,
511 struct task_struct
*tsk
)
513 #define audit_enabled 0
514 #endif /* CONFIG_AUDIT */
515 static inline void audit_log_string(struct audit_buffer
*ab
, const char *buf
)
517 audit_log_n_string(ab
, buf
, strlen(buf
));
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