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 */
89 #ifdef CONFIG_AUDITSYSCALL
90 /* These are defined in auditsc.c */
92 extern int audit_alloc(struct task_struct
*task
);
93 extern void __audit_free(struct task_struct
*task
);
94 extern void __audit_syscall_entry(int arch
,
95 int major
, unsigned long a0
, unsigned long a1
,
96 unsigned long a2
, unsigned long a3
);
97 extern void __audit_syscall_exit(int ret_success
, long ret_value
);
98 extern struct filename
*__audit_reusename(const __user
char *uptr
);
99 extern void __audit_getname(struct filename
*name
);
100 extern void audit_putname(struct filename
*name
);
101 extern void __audit_inode(struct filename
*name
, const struct dentry
*dentry
,
102 unsigned int parent
);
103 extern void __audit_inode_child(const struct inode
*parent
,
104 const struct dentry
*dentry
,
105 const unsigned char type
);
106 extern void __audit_seccomp(unsigned long syscall
, long signr
, int code
);
107 extern void __audit_ptrace(struct task_struct
*t
);
109 static inline int audit_dummy_context(void)
111 void *p
= current
->audit_context
;
112 return !p
|| *(int *)p
;
114 static inline void audit_free(struct task_struct
*task
)
116 if (unlikely(task
->audit_context
))
119 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
120 unsigned long a1
, unsigned long a2
,
123 if (unlikely(!audit_dummy_context()))
124 __audit_syscall_entry(arch
, major
, a0
, a1
, a2
, a3
);
126 static inline void audit_syscall_exit(void *pt_regs
)
128 if (unlikely(current
->audit_context
)) {
129 int success
= is_syscall_success(pt_regs
);
130 int return_code
= regs_return_value(pt_regs
);
132 __audit_syscall_exit(success
, return_code
);
135 static inline struct filename
*audit_reusename(const __user
char *name
)
137 if (unlikely(!audit_dummy_context()))
138 return __audit_reusename(name
);
141 static inline void audit_getname(struct filename
*name
)
143 if (unlikely(!audit_dummy_context()))
144 __audit_getname(name
);
146 static inline void audit_inode(struct filename
*name
, const struct dentry
*dentry
,
147 unsigned int parent
) {
148 if (unlikely(!audit_dummy_context()))
149 __audit_inode(name
, dentry
, parent
);
151 static inline void audit_inode_child(const struct inode
*parent
,
152 const struct dentry
*dentry
,
153 const unsigned char type
) {
154 if (unlikely(!audit_dummy_context()))
155 __audit_inode_child(parent
, dentry
, type
);
157 void audit_core_dumps(long signr
);
159 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
161 /* Force a record to be reported if a signal was delivered. */
162 if (signr
|| unlikely(!audit_dummy_context()))
163 __audit_seccomp(syscall
, signr
, code
);
166 static inline void audit_ptrace(struct task_struct
*t
)
168 if (unlikely(!audit_dummy_context()))
172 /* Private API (for audit.c only) */
173 extern unsigned int audit_serial(void);
174 extern int auditsc_get_stamp(struct audit_context
*ctx
,
175 struct timespec
*t
, unsigned int *serial
);
176 extern int audit_set_loginuid(kuid_t loginuid
);
178 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
180 return tsk
->loginuid
;
183 static inline int audit_get_sessionid(struct task_struct
*tsk
)
185 return tsk
->sessionid
;
188 extern void audit_log_task_context(struct audit_buffer
*ab
);
189 extern void audit_log_task_info(struct audit_buffer
*ab
, struct task_struct
*tsk
);
190 extern void __audit_ipc_obj(struct kern_ipc_perm
*ipcp
);
191 extern void __audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
);
192 extern int __audit_bprm(struct linux_binprm
*bprm
);
193 extern void __audit_socketcall(int nargs
, unsigned long *args
);
194 extern int __audit_sockaddr(int len
, void *addr
);
195 extern void __audit_fd_pair(int fd1
, int fd2
);
196 extern void __audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
);
197 extern void __audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
);
198 extern void __audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
);
199 extern void __audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
);
200 extern int __audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
201 const struct cred
*new,
202 const struct cred
*old
);
203 extern void __audit_log_capset(pid_t pid
, const struct cred
*new, const struct cred
*old
);
204 extern void __audit_mmap_fd(int fd
, int flags
);
206 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
208 if (unlikely(!audit_dummy_context()))
209 __audit_ipc_obj(ipcp
);
211 static inline void audit_fd_pair(int fd1
, int fd2
)
213 if (unlikely(!audit_dummy_context()))
214 __audit_fd_pair(fd1
, fd2
);
216 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
)
218 if (unlikely(!audit_dummy_context()))
219 __audit_ipc_set_perm(qbytes
, uid
, gid
, mode
);
221 static inline int audit_bprm(struct linux_binprm
*bprm
)
223 if (unlikely(!audit_dummy_context()))
224 return __audit_bprm(bprm
);
227 static inline void audit_socketcall(int nargs
, unsigned long *args
)
229 if (unlikely(!audit_dummy_context()))
230 __audit_socketcall(nargs
, args
);
232 static inline int audit_sockaddr(int len
, void *addr
)
234 if (unlikely(!audit_dummy_context()))
235 return __audit_sockaddr(len
, addr
);
238 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
240 if (unlikely(!audit_dummy_context()))
241 __audit_mq_open(oflag
, mode
, attr
);
243 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
)
245 if (unlikely(!audit_dummy_context()))
246 __audit_mq_sendrecv(mqdes
, msg_len
, msg_prio
, abs_timeout
);
248 static inline void audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
)
250 if (unlikely(!audit_dummy_context()))
251 __audit_mq_notify(mqdes
, notification
);
253 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
255 if (unlikely(!audit_dummy_context()))
256 __audit_mq_getsetattr(mqdes
, mqstat
);
259 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
260 const struct cred
*new,
261 const struct cred
*old
)
263 if (unlikely(!audit_dummy_context()))
264 return __audit_log_bprm_fcaps(bprm
, new, old
);
268 static inline void audit_log_capset(pid_t pid
, const struct cred
*new,
269 const struct cred
*old
)
271 if (unlikely(!audit_dummy_context()))
272 __audit_log_capset(pid
, new, old
);
275 static inline void audit_mmap_fd(int fd
, int flags
)
277 if (unlikely(!audit_dummy_context()))
278 __audit_mmap_fd(fd
, flags
);
281 extern int audit_n_rules
;
282 extern int audit_signals
;
283 #else /* CONFIG_AUDITSYSCALL */
284 static inline int audit_alloc(struct task_struct
*task
)
288 static inline void audit_free(struct task_struct
*task
)
290 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
291 unsigned long a1
, unsigned long a2
,
294 static inline void audit_syscall_exit(void *pt_regs
)
296 static inline int audit_dummy_context(void)
300 static inline struct filename
*audit_reusename(const __user
char *name
)
304 static inline void audit_getname(struct filename
*name
)
306 static inline void audit_putname(struct filename
*name
)
308 static inline void __audit_inode(struct filename
*name
,
309 const struct dentry
*dentry
,
312 static inline void __audit_inode_child(const struct inode
*parent
,
313 const struct dentry
*dentry
,
314 const unsigned char type
)
316 static inline void audit_inode(struct filename
*name
,
317 const struct dentry
*dentry
,
320 static inline void audit_inode_child(const struct inode
*parent
,
321 const struct dentry
*dentry
,
322 const unsigned char type
)
324 static inline void audit_core_dumps(long signr
)
326 static inline void __audit_seccomp(unsigned long syscall
, long signr
, int code
)
328 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
330 static inline int auditsc_get_stamp(struct audit_context
*ctx
,
331 struct timespec
*t
, unsigned int *serial
)
335 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
339 static inline int audit_get_sessionid(struct task_struct
*tsk
)
343 static inline void audit_log_task_context(struct audit_buffer
*ab
)
345 static inline void audit_log_task_info(struct audit_buffer
*ab
,
346 struct task_struct
*tsk
)
348 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
350 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
,
351 gid_t gid
, umode_t mode
)
353 static inline int audit_bprm(struct linux_binprm
*bprm
)
357 static inline void audit_socketcall(int nargs
, unsigned long *args
)
359 static inline void audit_fd_pair(int fd1
, int fd2
)
361 static inline int audit_sockaddr(int len
, void *addr
)
365 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
367 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
,
368 unsigned int msg_prio
,
369 const struct timespec
*abs_timeout
)
371 static inline void audit_mq_notify(mqd_t mqdes
,
372 const struct sigevent
*notification
)
374 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
376 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
377 const struct cred
*new,
378 const struct cred
*old
)
382 static inline void audit_log_capset(pid_t pid
, const struct cred
*new,
383 const struct cred
*old
)
385 static inline void audit_mmap_fd(int fd
, int flags
)
387 static inline void audit_ptrace(struct task_struct
*t
)
389 #define audit_n_rules 0
390 #define audit_signals 0
391 #endif /* CONFIG_AUDITSYSCALL */
394 /* These are defined in audit.c */
396 extern __printf(4, 5)
397 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
398 const char *fmt
, ...);
400 extern struct audit_buffer
*audit_log_start(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
);
401 extern __printf(2, 3)
402 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...);
403 extern void audit_log_end(struct audit_buffer
*ab
);
404 extern int audit_string_contains_control(const char *string
,
406 extern void audit_log_n_hex(struct audit_buffer
*ab
,
407 const unsigned char *buf
,
409 extern void audit_log_n_string(struct audit_buffer
*ab
,
412 extern void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
415 extern void audit_log_untrustedstring(struct audit_buffer
*ab
,
417 extern void audit_log_d_path(struct audit_buffer
*ab
,
419 const struct path
*path
);
420 extern void audit_log_key(struct audit_buffer
*ab
,
422 extern void audit_log_link_denied(const char *operation
,
424 extern void audit_log_lost(const char *message
);
425 #ifdef CONFIG_SECURITY
426 extern void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
);
428 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
432 extern int audit_update_lsm_rules(void);
434 /* Private API (for audit.c only) */
435 extern int audit_filter_user(void);
436 extern int audit_filter_type(int type
);
437 extern int audit_receive_filter(int type
, int pid
, int seq
,
438 void *data
, size_t datasz
, kuid_t loginuid
,
439 u32 sessionid
, u32 sid
);
440 extern int audit_enabled
;
441 #else /* CONFIG_AUDIT */
442 static inline __printf(4, 5)
443 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
444 const char *fmt
, ...)
446 static inline struct audit_buffer
*audit_log_start(struct audit_context
*ctx
,
447 gfp_t gfp_mask
, int type
)
451 static inline __printf(2, 3)
452 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...)
454 static inline void audit_log_end(struct audit_buffer
*ab
)
456 static inline void audit_log_n_hex(struct audit_buffer
*ab
,
457 const unsigned char *buf
, size_t len
)
459 static inline void audit_log_n_string(struct audit_buffer
*ab
,
460 const char *buf
, size_t n
)
462 static inline void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
463 const char *string
, size_t n
)
465 static inline void audit_log_untrustedstring(struct audit_buffer
*ab
,
468 static inline void audit_log_d_path(struct audit_buffer
*ab
,
470 const struct path
*path
)
472 static inline void audit_log_key(struct audit_buffer
*ab
, char *key
)
474 static inline void audit_log_link_denied(const char *string
,
475 const struct path
*link
)
477 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
479 #define audit_enabled 0
480 #endif /* CONFIG_AUDIT */
481 static inline void audit_log_string(struct audit_buffer
*ab
, const char *buf
)
483 audit_log_n_string(ab
, buf
, strlen(buf
));