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 <uapi/linux/audit.h>
29 struct audit_sig_info
{
38 struct netlink_skb_parms
;
51 u32 mask
[AUDIT_BITMASK_SIZE
];
52 u32 buflen
; /* for data alloc on list rules */
54 char *filterkey
; /* ties events to rules */
55 struct audit_field
*fields
;
56 struct audit_field
*arch_f
; /* quick access to arch field */
57 struct audit_field
*inode_f
; /* quick access to an inode field */
58 struct audit_watch
*watch
; /* associated watch */
59 struct audit_tree
*tree
; /* associated watched tree */
60 struct list_head rlist
; /* entry in audit_{watch,tree}.rules list */
61 struct list_head list
; /* for AUDIT_LIST* purposes only */
75 extern int __init
audit_register_class(int class, unsigned *list
);
76 extern int audit_classify_syscall(int abi
, unsigned syscall
);
77 extern int audit_classify_arch(int arch
);
79 /* audit_names->type values */
80 #define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
81 #define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
82 #define AUDIT_TYPE_PARENT 2 /* a parent audit record */
83 #define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
84 #define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
88 #ifdef CONFIG_AUDITSYSCALL
89 /* These are defined in auditsc.c */
91 extern int audit_alloc(struct task_struct
*task
);
92 extern void __audit_free(struct task_struct
*task
);
93 extern void __audit_syscall_entry(int arch
,
94 int major
, unsigned long a0
, unsigned long a1
,
95 unsigned long a2
, unsigned long a3
);
96 extern void __audit_syscall_exit(int ret_success
, long ret_value
);
97 extern struct filename
*__audit_reusename(const __user
char *uptr
);
98 extern void __audit_getname(struct filename
*name
);
99 extern void audit_putname(struct filename
*name
);
100 extern void __audit_inode(struct filename
*name
, const struct dentry
*dentry
,
101 unsigned int parent
);
102 extern void __audit_inode_child(const struct inode
*parent
,
103 const struct dentry
*dentry
,
104 const unsigned char type
);
105 extern void __audit_seccomp(unsigned long syscall
, long signr
, int code
);
106 extern void __audit_ptrace(struct task_struct
*t
);
108 static inline int audit_dummy_context(void)
110 void *p
= current
->audit_context
;
111 return !p
|| *(int *)p
;
113 static inline void audit_free(struct task_struct
*task
)
115 if (unlikely(task
->audit_context
))
118 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
119 unsigned long a1
, unsigned long a2
,
122 if (unlikely(!audit_dummy_context()))
123 __audit_syscall_entry(arch
, major
, a0
, a1
, a2
, a3
);
125 static inline void audit_syscall_exit(void *pt_regs
)
127 if (unlikely(current
->audit_context
)) {
128 int success
= is_syscall_success(pt_regs
);
129 int return_code
= regs_return_value(pt_regs
);
131 __audit_syscall_exit(success
, return_code
);
134 static inline struct filename
*audit_reusename(const __user
char *name
)
136 if (unlikely(!audit_dummy_context()))
137 return __audit_reusename(name
);
140 static inline void audit_getname(struct filename
*name
)
142 if (unlikely(!audit_dummy_context()))
143 __audit_getname(name
);
145 static inline void audit_inode(struct filename
*name
, const struct dentry
*dentry
,
146 unsigned int parent
) {
147 if (unlikely(!audit_dummy_context()))
148 __audit_inode(name
, dentry
, parent
);
150 static inline void audit_inode_child(const struct inode
*parent
,
151 const struct dentry
*dentry
,
152 const unsigned char type
) {
153 if (unlikely(!audit_dummy_context()))
154 __audit_inode_child(parent
, dentry
, type
);
156 void audit_core_dumps(long signr
);
158 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
160 if (unlikely(!audit_dummy_context()))
161 __audit_seccomp(syscall
, signr
, code
);
164 static inline void audit_ptrace(struct task_struct
*t
)
166 if (unlikely(!audit_dummy_context()))
170 /* Private API (for audit.c only) */
171 extern unsigned int audit_serial(void);
172 extern int auditsc_get_stamp(struct audit_context
*ctx
,
173 struct timespec
*t
, unsigned int *serial
);
174 extern int audit_set_loginuid(kuid_t loginuid
);
176 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
178 return tsk
->loginuid
;
181 static inline int audit_get_sessionid(struct task_struct
*tsk
)
183 return tsk
->sessionid
;
186 extern void audit_log_task_context(struct audit_buffer
*ab
);
187 extern void audit_log_task_info(struct audit_buffer
*ab
, struct task_struct
*tsk
);
188 extern void __audit_ipc_obj(struct kern_ipc_perm
*ipcp
);
189 extern void __audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
);
190 extern int __audit_bprm(struct linux_binprm
*bprm
);
191 extern void __audit_socketcall(int nargs
, unsigned long *args
);
192 extern int __audit_sockaddr(int len
, void *addr
);
193 extern void __audit_fd_pair(int fd1
, int fd2
);
194 extern void __audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
);
195 extern void __audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
);
196 extern void __audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
);
197 extern void __audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
);
198 extern int __audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
199 const struct cred
*new,
200 const struct cred
*old
);
201 extern void __audit_log_capset(pid_t pid
, const struct cred
*new, const struct cred
*old
);
202 extern void __audit_mmap_fd(int fd
, int flags
);
204 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
206 if (unlikely(!audit_dummy_context()))
207 __audit_ipc_obj(ipcp
);
209 static inline void audit_fd_pair(int fd1
, int fd2
)
211 if (unlikely(!audit_dummy_context()))
212 __audit_fd_pair(fd1
, fd2
);
214 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
)
216 if (unlikely(!audit_dummy_context()))
217 __audit_ipc_set_perm(qbytes
, uid
, gid
, mode
);
219 static inline int audit_bprm(struct linux_binprm
*bprm
)
221 if (unlikely(!audit_dummy_context()))
222 return __audit_bprm(bprm
);
225 static inline void audit_socketcall(int nargs
, unsigned long *args
)
227 if (unlikely(!audit_dummy_context()))
228 __audit_socketcall(nargs
, args
);
230 static inline int audit_sockaddr(int len
, void *addr
)
232 if (unlikely(!audit_dummy_context()))
233 return __audit_sockaddr(len
, addr
);
236 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
238 if (unlikely(!audit_dummy_context()))
239 __audit_mq_open(oflag
, mode
, attr
);
241 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
)
243 if (unlikely(!audit_dummy_context()))
244 __audit_mq_sendrecv(mqdes
, msg_len
, msg_prio
, abs_timeout
);
246 static inline void audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
)
248 if (unlikely(!audit_dummy_context()))
249 __audit_mq_notify(mqdes
, notification
);
251 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
253 if (unlikely(!audit_dummy_context()))
254 __audit_mq_getsetattr(mqdes
, mqstat
);
257 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
258 const struct cred
*new,
259 const struct cred
*old
)
261 if (unlikely(!audit_dummy_context()))
262 return __audit_log_bprm_fcaps(bprm
, new, old
);
266 static inline void audit_log_capset(pid_t pid
, const struct cred
*new,
267 const struct cred
*old
)
269 if (unlikely(!audit_dummy_context()))
270 __audit_log_capset(pid
, new, old
);
273 static inline void audit_mmap_fd(int fd
, int flags
)
275 if (unlikely(!audit_dummy_context()))
276 __audit_mmap_fd(fd
, flags
);
279 extern int audit_n_rules
;
280 extern int audit_signals
;
281 #else /* CONFIG_AUDITSYSCALL */
282 static inline int audit_alloc(struct task_struct
*task
)
286 static inline void audit_free(struct task_struct
*task
)
288 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
289 unsigned long a1
, unsigned long a2
,
292 static inline void audit_syscall_exit(void *pt_regs
)
294 static inline int audit_dummy_context(void)
298 static inline struct filename
*audit_reusename(const __user
char *name
)
302 static inline void audit_getname(struct filename
*name
)
304 static inline void audit_putname(struct filename
*name
)
306 static inline void __audit_inode(struct filename
*name
,
307 const struct dentry
*dentry
,
310 static inline void __audit_inode_child(const struct inode
*parent
,
311 const struct dentry
*dentry
,
312 const unsigned char type
)
314 static inline void audit_inode(struct filename
*name
,
315 const struct dentry
*dentry
,
318 static inline void audit_inode_child(const struct inode
*parent
,
319 const struct dentry
*dentry
,
320 const unsigned char type
)
322 static inline void audit_core_dumps(long signr
)
324 static inline void __audit_seccomp(unsigned long syscall
, long signr
, int code
)
326 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
328 static inline int auditsc_get_stamp(struct audit_context
*ctx
,
329 struct timespec
*t
, unsigned int *serial
)
333 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
337 static inline int audit_get_sessionid(struct task_struct
*tsk
)
341 static inline void audit_log_task_context(struct audit_buffer
*ab
)
343 static inline void audit_log_task_info(struct audit_buffer
*ab
,
344 struct task_struct
*tsk
)
346 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
348 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
,
349 gid_t gid
, umode_t mode
)
351 static inline int audit_bprm(struct linux_binprm
*bprm
)
355 static inline void audit_socketcall(int nargs
, unsigned long *args
)
357 static inline void audit_fd_pair(int fd1
, int fd2
)
359 static inline int audit_sockaddr(int len
, void *addr
)
363 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
365 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
,
366 unsigned int msg_prio
,
367 const struct timespec
*abs_timeout
)
369 static inline void audit_mq_notify(mqd_t mqdes
,
370 const struct sigevent
*notification
)
372 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
374 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
375 const struct cred
*new,
376 const struct cred
*old
)
380 static inline void audit_log_capset(pid_t pid
, const struct cred
*new,
381 const struct cred
*old
)
383 static inline void audit_mmap_fd(int fd
, int flags
)
385 static inline void audit_ptrace(struct task_struct
*t
)
387 #define audit_n_rules 0
388 #define audit_signals 0
389 #endif /* CONFIG_AUDITSYSCALL */
392 /* These are defined in audit.c */
394 extern __printf(4, 5)
395 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
396 const char *fmt
, ...);
398 extern struct audit_buffer
*audit_log_start(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
);
399 extern __printf(2, 3)
400 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...);
401 extern void audit_log_end(struct audit_buffer
*ab
);
402 extern int audit_string_contains_control(const char *string
,
404 extern void audit_log_n_hex(struct audit_buffer
*ab
,
405 const unsigned char *buf
,
407 extern void audit_log_n_string(struct audit_buffer
*ab
,
410 extern void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
413 extern void audit_log_untrustedstring(struct audit_buffer
*ab
,
415 extern void audit_log_d_path(struct audit_buffer
*ab
,
417 const struct path
*path
);
418 extern void audit_log_key(struct audit_buffer
*ab
,
420 extern void audit_log_link_denied(const char *operation
,
422 extern void audit_log_lost(const char *message
);
423 #ifdef CONFIG_SECURITY
424 extern void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
);
426 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
430 extern int audit_update_lsm_rules(void);
432 /* Private API (for audit.c only) */
433 extern int audit_filter_user(void);
434 extern int audit_filter_type(int type
);
435 extern int audit_receive_filter(int type
, int pid
, int seq
,
436 void *data
, size_t datasz
, kuid_t loginuid
,
437 u32 sessionid
, u32 sid
);
438 extern int audit_enabled
;
439 #else /* CONFIG_AUDIT */
440 static inline __printf(4, 5)
441 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
442 const char *fmt
, ...)
444 static inline struct audit_buffer
*audit_log_start(struct audit_context
*ctx
,
445 gfp_t gfp_mask
, int type
)
449 static inline __printf(2, 3)
450 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...)
452 static inline void audit_log_end(struct audit_buffer
*ab
)
454 static inline void audit_log_n_hex(struct audit_buffer
*ab
,
455 const unsigned char *buf
, size_t len
)
457 static inline void audit_log_n_string(struct audit_buffer
*ab
,
458 const char *buf
, size_t n
)
460 static inline void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
461 const char *string
, size_t n
)
463 static inline void audit_log_untrustedstring(struct audit_buffer
*ab
,
466 static inline void audit_log_d_path(struct audit_buffer
*ab
,
468 const struct path
*path
)
470 static inline void audit_log_key(struct audit_buffer
*ab
, char *key
)
472 static inline void audit_log_link_denied(const char *string
,
473 const struct path
*link
)
475 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
477 #define audit_enabled 0
478 #endif /* CONFIG_AUDIT */
479 static inline void audit_log_string(struct audit_buffer
*ab
, const char *buf
)
481 audit_log_n_string(ab
, buf
, strlen(buf
));
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