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 is_audit_feature_set(int which
);
78 extern int __init
audit_register_class(int class, unsigned *list
);
79 extern int audit_classify_syscall(int abi
, unsigned syscall
);
80 extern int audit_classify_arch(int arch
);
82 /* audit_names->type values */
83 #define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
84 #define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
85 #define AUDIT_TYPE_PARENT 2 /* a parent audit record */
86 #define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
87 #define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
89 /* maximized args number that audit_socketcall can process */
90 #define AUDITSC_ARGS 6
94 extern void audit_log_session_info(struct audit_buffer
*ab
);
96 #ifdef CONFIG_AUDITSYSCALL
97 /* These are defined in auditsc.c */
99 extern int audit_alloc(struct task_struct
*task
);
100 extern void __audit_free(struct task_struct
*task
);
101 extern void __audit_syscall_entry(int arch
,
102 int major
, unsigned long a0
, unsigned long a1
,
103 unsigned long a2
, unsigned long a3
);
104 extern void __audit_syscall_exit(int ret_success
, long ret_value
);
105 extern struct filename
*__audit_reusename(const __user
char *uptr
);
106 extern void __audit_getname(struct filename
*name
);
107 extern void audit_putname(struct filename
*name
);
109 #define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
110 #define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
111 extern void __audit_inode(struct filename
*name
, const struct dentry
*dentry
,
113 extern void __audit_inode_child(const struct inode
*parent
,
114 const struct dentry
*dentry
,
115 const unsigned char type
);
116 extern void __audit_seccomp(unsigned long syscall
, long signr
, int code
);
117 extern void __audit_ptrace(struct task_struct
*t
);
119 static inline int audit_dummy_context(void)
121 void *p
= current
->audit_context
;
122 return !p
|| *(int *)p
;
124 static inline void audit_free(struct task_struct
*task
)
126 if (unlikely(task
->audit_context
))
129 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
130 unsigned long a1
, unsigned long a2
,
133 if (unlikely(current
->audit_context
))
134 __audit_syscall_entry(arch
, major
, a0
, a1
, a2
, a3
);
136 static inline void audit_syscall_exit(void *pt_regs
)
138 if (unlikely(current
->audit_context
)) {
139 int success
= is_syscall_success(pt_regs
);
140 int return_code
= regs_return_value(pt_regs
);
142 __audit_syscall_exit(success
, return_code
);
145 static inline struct filename
*audit_reusename(const __user
char *name
)
147 if (unlikely(!audit_dummy_context()))
148 return __audit_reusename(name
);
151 static inline void audit_getname(struct filename
*name
)
153 if (unlikely(!audit_dummy_context()))
154 __audit_getname(name
);
156 static inline void audit_inode(struct filename
*name
,
157 const struct dentry
*dentry
,
158 unsigned int parent
) {
159 if (unlikely(!audit_dummy_context())) {
160 unsigned int flags
= 0;
162 flags
|= AUDIT_INODE_PARENT
;
163 __audit_inode(name
, dentry
, flags
);
166 static inline void audit_inode_parent_hidden(struct filename
*name
,
167 const struct dentry
*dentry
)
169 if (unlikely(!audit_dummy_context()))
170 __audit_inode(name
, dentry
,
171 AUDIT_INODE_PARENT
| AUDIT_INODE_HIDDEN
);
173 static inline void audit_inode_child(const struct inode
*parent
,
174 const struct dentry
*dentry
,
175 const unsigned char type
) {
176 if (unlikely(!audit_dummy_context()))
177 __audit_inode_child(parent
, dentry
, type
);
179 void audit_core_dumps(long signr
);
181 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
183 /* Force a record to be reported if a signal was delivered. */
184 if (signr
|| unlikely(!audit_dummy_context()))
185 __audit_seccomp(syscall
, signr
, code
);
188 static inline void audit_ptrace(struct task_struct
*t
)
190 if (unlikely(!audit_dummy_context()))
194 /* Private API (for audit.c only) */
195 extern unsigned int audit_serial(void);
196 extern int auditsc_get_stamp(struct audit_context
*ctx
,
197 struct timespec
*t
, unsigned int *serial
);
198 extern int audit_set_loginuid(kuid_t loginuid
);
200 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
202 return tsk
->loginuid
;
205 static inline int audit_get_sessionid(struct task_struct
*tsk
)
207 return tsk
->sessionid
;
210 extern void __audit_ipc_obj(struct kern_ipc_perm
*ipcp
);
211 extern void __audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
);
212 extern void __audit_bprm(struct linux_binprm
*bprm
);
213 extern int __audit_socketcall(int nargs
, unsigned long *args
);
214 extern int __audit_sockaddr(int len
, void *addr
);
215 extern void __audit_fd_pair(int fd1
, int fd2
);
216 extern void __audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
);
217 extern void __audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
);
218 extern void __audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
);
219 extern void __audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
);
220 extern int __audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
221 const struct cred
*new,
222 const struct cred
*old
);
223 extern void __audit_log_capset(pid_t pid
, const struct cred
*new, const struct cred
*old
);
224 extern void __audit_mmap_fd(int fd
, int flags
);
226 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
228 if (unlikely(!audit_dummy_context()))
229 __audit_ipc_obj(ipcp
);
231 static inline void audit_fd_pair(int fd1
, int fd2
)
233 if (unlikely(!audit_dummy_context()))
234 __audit_fd_pair(fd1
, fd2
);
236 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
)
238 if (unlikely(!audit_dummy_context()))
239 __audit_ipc_set_perm(qbytes
, uid
, gid
, mode
);
241 static inline void audit_bprm(struct linux_binprm
*bprm
)
243 if (unlikely(!audit_dummy_context()))
246 static inline int audit_socketcall(int nargs
, unsigned long *args
)
248 if (unlikely(!audit_dummy_context()))
249 return __audit_socketcall(nargs
, args
);
252 static inline int audit_sockaddr(int len
, void *addr
)
254 if (unlikely(!audit_dummy_context()))
255 return __audit_sockaddr(len
, addr
);
258 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
260 if (unlikely(!audit_dummy_context()))
261 __audit_mq_open(oflag
, mode
, attr
);
263 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
)
265 if (unlikely(!audit_dummy_context()))
266 __audit_mq_sendrecv(mqdes
, msg_len
, msg_prio
, abs_timeout
);
268 static inline void audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
)
270 if (unlikely(!audit_dummy_context()))
271 __audit_mq_notify(mqdes
, notification
);
273 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
275 if (unlikely(!audit_dummy_context()))
276 __audit_mq_getsetattr(mqdes
, mqstat
);
279 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
280 const struct cred
*new,
281 const struct cred
*old
)
283 if (unlikely(!audit_dummy_context()))
284 return __audit_log_bprm_fcaps(bprm
, new, old
);
288 static inline void audit_log_capset(pid_t pid
, const struct cred
*new,
289 const struct cred
*old
)
291 if (unlikely(!audit_dummy_context()))
292 __audit_log_capset(pid
, new, old
);
295 static inline void audit_mmap_fd(int fd
, int flags
)
297 if (unlikely(!audit_dummy_context()))
298 __audit_mmap_fd(fd
, flags
);
301 extern int audit_n_rules
;
302 extern int audit_signals
;
303 #else /* CONFIG_AUDITSYSCALL */
304 static inline int audit_alloc(struct task_struct
*task
)
308 static inline void audit_free(struct task_struct
*task
)
310 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
311 unsigned long a1
, unsigned long a2
,
314 static inline void audit_syscall_exit(void *pt_regs
)
316 static inline int audit_dummy_context(void)
320 static inline struct filename
*audit_reusename(const __user
char *name
)
324 static inline void audit_getname(struct filename
*name
)
326 static inline void audit_putname(struct filename
*name
)
328 static inline void __audit_inode(struct filename
*name
,
329 const struct dentry
*dentry
,
332 static inline void __audit_inode_child(const struct inode
*parent
,
333 const struct dentry
*dentry
,
334 const unsigned char type
)
336 static inline void audit_inode(struct filename
*name
,
337 const struct dentry
*dentry
,
340 static inline void audit_inode_parent_hidden(struct filename
*name
,
341 const struct dentry
*dentry
)
343 static inline void audit_inode_child(const struct inode
*parent
,
344 const struct dentry
*dentry
,
345 const unsigned char type
)
347 static inline void audit_core_dumps(long signr
)
349 static inline void __audit_seccomp(unsigned long syscall
, long signr
, int code
)
351 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
353 static inline int auditsc_get_stamp(struct audit_context
*ctx
,
354 struct timespec
*t
, unsigned int *serial
)
358 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
362 static inline int audit_get_sessionid(struct task_struct
*tsk
)
366 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
368 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
,
369 gid_t gid
, umode_t mode
)
371 static inline void audit_bprm(struct linux_binprm
*bprm
)
373 static inline int audit_socketcall(int nargs
, unsigned long *args
)
377 static inline void audit_fd_pair(int fd1
, int fd2
)
379 static inline int audit_sockaddr(int len
, void *addr
)
383 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
385 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
,
386 unsigned int msg_prio
,
387 const struct timespec
*abs_timeout
)
389 static inline void audit_mq_notify(mqd_t mqdes
,
390 const struct sigevent
*notification
)
392 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
394 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
395 const struct cred
*new,
396 const struct cred
*old
)
400 static inline void audit_log_capset(pid_t pid
, const struct cred
*new,
401 const struct cred
*old
)
403 static inline void audit_mmap_fd(int fd
, int flags
)
405 static inline void audit_ptrace(struct task_struct
*t
)
407 #define audit_n_rules 0
408 #define audit_signals 0
409 #endif /* CONFIG_AUDITSYSCALL */
411 static inline bool audit_loginuid_set(struct task_struct
*tsk
)
413 return uid_valid(audit_get_loginuid(tsk
));
417 /* These are defined in audit.c */
419 extern __printf(4, 5)
420 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
421 const char *fmt
, ...);
423 extern struct audit_buffer
*audit_log_start(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
);
424 extern __printf(2, 3)
425 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...);
426 extern void audit_log_end(struct audit_buffer
*ab
);
427 extern int audit_string_contains_control(const char *string
,
429 extern void audit_log_n_hex(struct audit_buffer
*ab
,
430 const unsigned char *buf
,
432 extern void audit_log_n_string(struct audit_buffer
*ab
,
435 extern void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
438 extern void audit_log_untrustedstring(struct audit_buffer
*ab
,
440 extern void audit_log_d_path(struct audit_buffer
*ab
,
442 const struct path
*path
);
443 extern void audit_log_key(struct audit_buffer
*ab
,
445 extern void audit_log_link_denied(const char *operation
,
447 extern void audit_log_lost(const char *message
);
448 #ifdef CONFIG_SECURITY
449 extern void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
);
451 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
455 extern int audit_log_task_context(struct audit_buffer
*ab
);
456 extern void audit_log_task_info(struct audit_buffer
*ab
,
457 struct task_struct
*tsk
);
459 extern int audit_update_lsm_rules(void);
461 /* Private API (for audit.c only) */
462 extern int audit_filter_user(int type
);
463 extern int audit_filter_type(int type
);
464 extern int audit_receive_filter(int type
, int pid
, int seq
,
465 void *data
, size_t datasz
);
466 extern int audit_enabled
;
467 #else /* CONFIG_AUDIT */
468 static inline __printf(4, 5)
469 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
470 const char *fmt
, ...)
472 static inline struct audit_buffer
*audit_log_start(struct audit_context
*ctx
,
473 gfp_t gfp_mask
, int type
)
477 static inline __printf(2, 3)
478 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...)
480 static inline void audit_log_end(struct audit_buffer
*ab
)
482 static inline void audit_log_n_hex(struct audit_buffer
*ab
,
483 const unsigned char *buf
, size_t len
)
485 static inline void audit_log_n_string(struct audit_buffer
*ab
,
486 const char *buf
, size_t n
)
488 static inline void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
489 const char *string
, size_t n
)
491 static inline void audit_log_untrustedstring(struct audit_buffer
*ab
,
494 static inline void audit_log_d_path(struct audit_buffer
*ab
,
496 const struct path
*path
)
498 static inline void audit_log_key(struct audit_buffer
*ab
, char *key
)
500 static inline void audit_log_link_denied(const char *string
,
501 const struct path
*link
)
503 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
505 static inline int audit_log_task_context(struct audit_buffer
*ab
)
509 static inline void audit_log_task_info(struct audit_buffer
*ab
,
510 struct task_struct
*tsk
)
512 #define audit_enabled 0
513 #endif /* CONFIG_AUDIT */
514 static inline void audit_log_string(struct audit_buffer
*ab
, const char *buf
)
516 audit_log_n_string(ab
, buf
, strlen(buf
));
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