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
);
106 extern void __audit_inode(struct filename
*name
, const struct dentry
*dentry
,
107 unsigned int parent
);
108 extern void __audit_inode_child(const struct inode
*parent
,
109 const struct dentry
*dentry
,
110 const unsigned char type
);
111 extern void __audit_seccomp(unsigned long syscall
, long signr
, int code
);
112 extern void __audit_ptrace(struct task_struct
*t
);
114 static inline int audit_dummy_context(void)
116 void *p
= current
->audit_context
;
117 return !p
|| *(int *)p
;
119 static inline void audit_free(struct task_struct
*task
)
121 if (unlikely(task
->audit_context
))
124 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
125 unsigned long a1
, unsigned long a2
,
128 if (unlikely(current
->audit_context
))
129 __audit_syscall_entry(arch
, major
, a0
, a1
, a2
, a3
);
131 static inline void audit_syscall_exit(void *pt_regs
)
133 if (unlikely(current
->audit_context
)) {
134 int success
= is_syscall_success(pt_regs
);
135 int return_code
= regs_return_value(pt_regs
);
137 __audit_syscall_exit(success
, return_code
);
140 static inline struct filename
*audit_reusename(const __user
char *name
)
142 if (unlikely(!audit_dummy_context()))
143 return __audit_reusename(name
);
146 static inline void audit_getname(struct filename
*name
)
148 if (unlikely(!audit_dummy_context()))
149 __audit_getname(name
);
151 static inline void audit_inode(struct filename
*name
, const struct dentry
*dentry
,
152 unsigned int parent
) {
153 if (unlikely(!audit_dummy_context()))
154 __audit_inode(name
, dentry
, parent
);
156 static inline void audit_inode_child(const struct inode
*parent
,
157 const struct dentry
*dentry
,
158 const unsigned char type
) {
159 if (unlikely(!audit_dummy_context()))
160 __audit_inode_child(parent
, dentry
, type
);
162 void audit_core_dumps(long signr
);
164 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
166 /* Force a record to be reported if a signal was delivered. */
167 if (signr
|| unlikely(!audit_dummy_context()))
168 __audit_seccomp(syscall
, signr
, code
);
171 static inline void audit_ptrace(struct task_struct
*t
)
173 if (unlikely(!audit_dummy_context()))
177 /* Private API (for audit.c only) */
178 extern unsigned int audit_serial(void);
179 extern int auditsc_get_stamp(struct audit_context
*ctx
,
180 struct timespec
*t
, unsigned int *serial
);
181 extern int audit_set_loginuid(kuid_t loginuid
);
183 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
185 return tsk
->loginuid
;
188 static inline int audit_get_sessionid(struct task_struct
*tsk
)
190 return tsk
->sessionid
;
193 extern void __audit_ipc_obj(struct kern_ipc_perm
*ipcp
);
194 extern void __audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
);
195 extern int __audit_bprm(struct linux_binprm
*bprm
);
196 extern int __audit_socketcall(int nargs
, unsigned long *args
);
197 extern int __audit_sockaddr(int len
, void *addr
);
198 extern void __audit_fd_pair(int fd1
, int fd2
);
199 extern void __audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
);
200 extern void __audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
);
201 extern void __audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
);
202 extern void __audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
);
203 extern int __audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
204 const struct cred
*new,
205 const struct cred
*old
);
206 extern void __audit_log_capset(pid_t pid
, const struct cred
*new, const struct cred
*old
);
207 extern void __audit_mmap_fd(int fd
, int flags
);
209 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
211 if (unlikely(!audit_dummy_context()))
212 __audit_ipc_obj(ipcp
);
214 static inline void audit_fd_pair(int fd1
, int fd2
)
216 if (unlikely(!audit_dummy_context()))
217 __audit_fd_pair(fd1
, fd2
);
219 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
)
221 if (unlikely(!audit_dummy_context()))
222 __audit_ipc_set_perm(qbytes
, uid
, gid
, mode
);
224 static inline int audit_bprm(struct linux_binprm
*bprm
)
226 if (unlikely(!audit_dummy_context()))
227 return __audit_bprm(bprm
);
230 static inline int audit_socketcall(int nargs
, unsigned long *args
)
232 if (unlikely(!audit_dummy_context()))
233 return __audit_socketcall(nargs
, args
);
236 static inline int audit_sockaddr(int len
, void *addr
)
238 if (unlikely(!audit_dummy_context()))
239 return __audit_sockaddr(len
, addr
);
242 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
244 if (unlikely(!audit_dummy_context()))
245 __audit_mq_open(oflag
, mode
, attr
);
247 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
)
249 if (unlikely(!audit_dummy_context()))
250 __audit_mq_sendrecv(mqdes
, msg_len
, msg_prio
, abs_timeout
);
252 static inline void audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
)
254 if (unlikely(!audit_dummy_context()))
255 __audit_mq_notify(mqdes
, notification
);
257 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
259 if (unlikely(!audit_dummy_context()))
260 __audit_mq_getsetattr(mqdes
, mqstat
);
263 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
264 const struct cred
*new,
265 const struct cred
*old
)
267 if (unlikely(!audit_dummy_context()))
268 return __audit_log_bprm_fcaps(bprm
, new, old
);
272 static inline void audit_log_capset(pid_t pid
, const struct cred
*new,
273 const struct cred
*old
)
275 if (unlikely(!audit_dummy_context()))
276 __audit_log_capset(pid
, new, old
);
279 static inline void audit_mmap_fd(int fd
, int flags
)
281 if (unlikely(!audit_dummy_context()))
282 __audit_mmap_fd(fd
, flags
);
285 extern int audit_n_rules
;
286 extern int audit_signals
;
287 #else /* CONFIG_AUDITSYSCALL */
288 static inline int audit_alloc(struct task_struct
*task
)
292 static inline void audit_free(struct task_struct
*task
)
294 static inline void audit_syscall_entry(int arch
, int major
, unsigned long a0
,
295 unsigned long a1
, unsigned long a2
,
298 static inline void audit_syscall_exit(void *pt_regs
)
300 static inline int audit_dummy_context(void)
304 static inline struct filename
*audit_reusename(const __user
char *name
)
308 static inline void audit_getname(struct filename
*name
)
310 static inline void audit_putname(struct filename
*name
)
312 static inline void __audit_inode(struct filename
*name
,
313 const struct dentry
*dentry
,
316 static inline void __audit_inode_child(const struct inode
*parent
,
317 const struct dentry
*dentry
,
318 const unsigned char type
)
320 static inline void audit_inode(struct filename
*name
,
321 const struct dentry
*dentry
,
324 static inline void audit_inode_child(const struct inode
*parent
,
325 const struct dentry
*dentry
,
326 const unsigned char type
)
328 static inline void audit_core_dumps(long signr
)
330 static inline void __audit_seccomp(unsigned long syscall
, long signr
, int code
)
332 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
334 static inline int auditsc_get_stamp(struct audit_context
*ctx
,
335 struct timespec
*t
, unsigned int *serial
)
339 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
343 static inline int audit_get_sessionid(struct task_struct
*tsk
)
347 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
349 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
,
350 gid_t gid
, umode_t mode
)
352 static inline int audit_bprm(struct linux_binprm
*bprm
)
356 static inline int audit_socketcall(int nargs
, unsigned long *args
)
360 static inline void audit_fd_pair(int fd1
, int fd2
)
362 static inline int audit_sockaddr(int len
, void *addr
)
366 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
368 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
,
369 unsigned int msg_prio
,
370 const struct timespec
*abs_timeout
)
372 static inline void audit_mq_notify(mqd_t mqdes
,
373 const struct sigevent
*notification
)
375 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
377 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
378 const struct cred
*new,
379 const struct cred
*old
)
383 static inline void audit_log_capset(pid_t pid
, const struct cred
*new,
384 const struct cred
*old
)
386 static inline void audit_mmap_fd(int fd
, int flags
)
388 static inline void audit_ptrace(struct task_struct
*t
)
390 #define audit_n_rules 0
391 #define audit_signals 0
392 #endif /* CONFIG_AUDITSYSCALL */
394 static inline bool audit_loginuid_set(struct task_struct
*tsk
)
396 return uid_valid(audit_get_loginuid(tsk
));
400 /* These are defined in audit.c */
402 extern __printf(4, 5)
403 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
404 const char *fmt
, ...);
406 extern struct audit_buffer
*audit_log_start(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
);
407 extern __printf(2, 3)
408 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...);
409 extern void audit_log_end(struct audit_buffer
*ab
);
410 extern int audit_string_contains_control(const char *string
,
412 extern void audit_log_n_hex(struct audit_buffer
*ab
,
413 const unsigned char *buf
,
415 extern void audit_log_n_string(struct audit_buffer
*ab
,
418 extern void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
421 extern void audit_log_untrustedstring(struct audit_buffer
*ab
,
423 extern void audit_log_d_path(struct audit_buffer
*ab
,
425 const struct path
*path
);
426 extern void audit_log_key(struct audit_buffer
*ab
,
428 extern void audit_log_link_denied(const char *operation
,
430 extern void audit_log_lost(const char *message
);
431 #ifdef CONFIG_SECURITY
432 extern void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
);
434 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
438 extern int audit_log_task_context(struct audit_buffer
*ab
);
439 extern void audit_log_task_info(struct audit_buffer
*ab
,
440 struct task_struct
*tsk
);
442 extern int audit_update_lsm_rules(void);
444 /* Private API (for audit.c only) */
445 extern int audit_filter_user(int type
);
446 extern int audit_filter_type(int type
);
447 extern int audit_receive_filter(int type
, int pid
, int seq
,
448 void *data
, size_t datasz
);
449 extern int audit_enabled
;
450 #else /* CONFIG_AUDIT */
451 static inline __printf(4, 5)
452 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
453 const char *fmt
, ...)
455 static inline struct audit_buffer
*audit_log_start(struct audit_context
*ctx
,
456 gfp_t gfp_mask
, int type
)
460 static inline __printf(2, 3)
461 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...)
463 static inline void audit_log_end(struct audit_buffer
*ab
)
465 static inline void audit_log_n_hex(struct audit_buffer
*ab
,
466 const unsigned char *buf
, size_t len
)
468 static inline void audit_log_n_string(struct audit_buffer
*ab
,
469 const char *buf
, size_t n
)
471 static inline void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
472 const char *string
, size_t n
)
474 static inline void audit_log_untrustedstring(struct audit_buffer
*ab
,
477 static inline void audit_log_d_path(struct audit_buffer
*ab
,
479 const struct path
*path
)
481 static inline void audit_log_key(struct audit_buffer
*ab
, char *key
)
483 static inline void audit_log_link_denied(const char *string
,
484 const struct path
*link
)
486 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
488 static inline int audit_log_task_context(struct audit_buffer
*ab
)
492 static inline void audit_log_task_info(struct audit_buffer
*ab
,
493 struct task_struct
*tsk
)
495 #define audit_enabled 0
496 #endif /* CONFIG_AUDIT */
497 static inline void audit_log_string(struct audit_buffer
*ab
, const char *buf
)
499 audit_log_n_string(ab
, buf
, strlen(buf
));
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