759feb0e9d13123799da54c1823eafeb8257b0ee
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 #define AUDIT_INO_UNSET ((unsigned long)-1)
31 #define AUDIT_DEV_UNSET ((dev_t)-1)
33 struct audit_sig_info
{
42 struct netlink_skb_parms
;
56 u32 mask
[AUDIT_BITMASK_SIZE
];
57 u32 buflen
; /* for data alloc on list rules */
59 char *filterkey
; /* ties events to rules */
60 struct audit_field
*fields
;
61 struct audit_field
*arch_f
; /* quick access to arch field */
62 struct audit_field
*inode_f
; /* quick access to an inode field */
63 struct audit_watch
*watch
; /* associated watch */
64 struct audit_tree
*tree
; /* associated watched tree */
65 struct list_head rlist
; /* entry in audit_{watch,tree}.rules list */
66 struct list_head list
; /* for AUDIT_LIST* purposes only */
70 /* Flag to indicate legacy AUDIT_LOGINUID unset usage */
71 #define AUDIT_LOGINUID_LEGACY 0x1
87 extern int is_audit_feature_set(int which
);
89 extern int __init
audit_register_class(int class, unsigned *list
);
90 extern int audit_classify_syscall(int abi
, unsigned syscall
);
91 extern int audit_classify_arch(int arch
);
92 /* only for compat system calls */
93 extern unsigned compat_write_class
[];
94 extern unsigned compat_read_class
[];
95 extern unsigned compat_dir_class
[];
96 extern unsigned compat_chattr_class
[];
97 extern unsigned compat_signal_class
[];
99 extern int audit_classify_compat_syscall(int abi
, unsigned syscall
);
101 /* audit_names->type values */
102 #define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
103 #define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
104 #define AUDIT_TYPE_PARENT 2 /* a parent audit record */
105 #define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
106 #define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
108 /* maximized args number that audit_socketcall can process */
109 #define AUDITSC_ARGS 6
113 extern void audit_log_session_info(struct audit_buffer
*ab
);
115 #ifdef CONFIG_AUDIT_COMPAT_GENERIC
116 #define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
118 #define audit_is_compat(arch) false
121 #ifdef CONFIG_AUDITSYSCALL
122 #include <asm/syscall.h> /* for syscall_get_arch() */
124 /* These are defined in auditsc.c */
126 extern int audit_alloc(struct task_struct
*task
);
127 extern void __audit_free(struct task_struct
*task
);
128 extern void __audit_syscall_entry(int major
, unsigned long a0
, unsigned long a1
,
129 unsigned long a2
, unsigned long a3
);
130 extern void __audit_syscall_exit(int ret_success
, long ret_value
);
131 extern struct filename
*__audit_reusename(const __user
char *uptr
);
132 extern void __audit_getname(struct filename
*name
);
134 #define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
135 #define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
136 extern void __audit_inode(struct filename
*name
, const struct dentry
*dentry
,
138 extern void __audit_file(const struct file
*);
139 extern void __audit_inode_child(const struct inode
*parent
,
140 const struct dentry
*dentry
,
141 const unsigned char type
);
142 extern void __audit_seccomp(unsigned long syscall
, long signr
, int code
);
143 extern void __audit_ptrace(struct task_struct
*t
);
145 static inline int audit_dummy_context(void)
147 void *p
= current
->audit_context
;
148 return !p
|| *(int *)p
;
150 static inline void audit_free(struct task_struct
*task
)
152 if (unlikely(task
->audit_context
))
155 static inline void audit_syscall_entry(int major
, unsigned long a0
,
156 unsigned long a1
, unsigned long a2
,
159 if (unlikely(current
->audit_context
))
160 __audit_syscall_entry(major
, a0
, a1
, a2
, a3
);
162 static inline void audit_syscall_exit(void *pt_regs
)
164 if (unlikely(current
->audit_context
)) {
165 int success
= is_syscall_success(pt_regs
);
166 long return_code
= regs_return_value(pt_regs
);
168 __audit_syscall_exit(success
, return_code
);
171 static inline struct filename
*audit_reusename(const __user
char *name
)
173 if (unlikely(!audit_dummy_context()))
174 return __audit_reusename(name
);
177 static inline void audit_getname(struct filename
*name
)
179 if (unlikely(!audit_dummy_context()))
180 __audit_getname(name
);
182 static inline void audit_inode(struct filename
*name
,
183 const struct dentry
*dentry
,
184 unsigned int parent
) {
185 if (unlikely(!audit_dummy_context())) {
186 unsigned int flags
= 0;
188 flags
|= AUDIT_INODE_PARENT
;
189 __audit_inode(name
, dentry
, flags
);
192 static inline void audit_file(struct file
*file
)
194 if (unlikely(!audit_dummy_context()))
197 static inline void audit_inode_parent_hidden(struct filename
*name
,
198 const struct dentry
*dentry
)
200 if (unlikely(!audit_dummy_context()))
201 __audit_inode(name
, dentry
,
202 AUDIT_INODE_PARENT
| AUDIT_INODE_HIDDEN
);
204 static inline void audit_inode_child(const struct inode
*parent
,
205 const struct dentry
*dentry
,
206 const unsigned char type
) {
207 if (unlikely(!audit_dummy_context()))
208 __audit_inode_child(parent
, dentry
, type
);
210 void audit_core_dumps(long signr
);
212 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
214 /* Force a record to be reported if a signal was delivered. */
215 if (signr
|| unlikely(!audit_dummy_context()))
216 __audit_seccomp(syscall
, signr
, code
);
219 static inline void audit_ptrace(struct task_struct
*t
)
221 if (unlikely(!audit_dummy_context()))
225 /* Private API (for audit.c only) */
226 extern unsigned int audit_serial(void);
227 extern int auditsc_get_stamp(struct audit_context
*ctx
,
228 struct timespec
*t
, unsigned int *serial
);
229 extern int audit_set_loginuid(kuid_t loginuid
);
231 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
233 return tsk
->loginuid
;
236 static inline unsigned int audit_get_sessionid(struct task_struct
*tsk
)
238 return tsk
->sessionid
;
241 extern void __audit_ipc_obj(struct kern_ipc_perm
*ipcp
);
242 extern void __audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
);
243 extern void __audit_bprm(struct linux_binprm
*bprm
);
244 extern int __audit_socketcall(int nargs
, unsigned long *args
);
245 extern int __audit_sockaddr(int len
, void *addr
);
246 extern void __audit_fd_pair(int fd1
, int fd2
);
247 extern void __audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
);
248 extern void __audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
);
249 extern void __audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
);
250 extern void __audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
);
251 extern int __audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
252 const struct cred
*new,
253 const struct cred
*old
);
254 extern void __audit_log_capset(const struct cred
*new, const struct cred
*old
);
255 extern void __audit_mmap_fd(int fd
, int flags
);
257 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
259 if (unlikely(!audit_dummy_context()))
260 __audit_ipc_obj(ipcp
);
262 static inline void audit_fd_pair(int fd1
, int fd2
)
264 if (unlikely(!audit_dummy_context()))
265 __audit_fd_pair(fd1
, fd2
);
267 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
, gid_t gid
, umode_t mode
)
269 if (unlikely(!audit_dummy_context()))
270 __audit_ipc_set_perm(qbytes
, uid
, gid
, mode
);
272 static inline void audit_bprm(struct linux_binprm
*bprm
)
274 if (unlikely(!audit_dummy_context()))
277 static inline int audit_socketcall(int nargs
, unsigned long *args
)
279 if (unlikely(!audit_dummy_context()))
280 return __audit_socketcall(nargs
, args
);
283 static inline int audit_sockaddr(int len
, void *addr
)
285 if (unlikely(!audit_dummy_context()))
286 return __audit_sockaddr(len
, addr
);
289 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
291 if (unlikely(!audit_dummy_context()))
292 __audit_mq_open(oflag
, mode
, attr
);
294 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
, unsigned int msg_prio
, const struct timespec
*abs_timeout
)
296 if (unlikely(!audit_dummy_context()))
297 __audit_mq_sendrecv(mqdes
, msg_len
, msg_prio
, abs_timeout
);
299 static inline void audit_mq_notify(mqd_t mqdes
, const struct sigevent
*notification
)
301 if (unlikely(!audit_dummy_context()))
302 __audit_mq_notify(mqdes
, notification
);
304 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
306 if (unlikely(!audit_dummy_context()))
307 __audit_mq_getsetattr(mqdes
, mqstat
);
310 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
311 const struct cred
*new,
312 const struct cred
*old
)
314 if (unlikely(!audit_dummy_context()))
315 return __audit_log_bprm_fcaps(bprm
, new, old
);
319 static inline void audit_log_capset(const struct cred
*new,
320 const struct cred
*old
)
322 if (unlikely(!audit_dummy_context()))
323 __audit_log_capset(new, old
);
326 static inline void audit_mmap_fd(int fd
, int flags
)
328 if (unlikely(!audit_dummy_context()))
329 __audit_mmap_fd(fd
, flags
);
332 extern int audit_n_rules
;
333 extern int audit_signals
;
334 #else /* CONFIG_AUDITSYSCALL */
335 static inline int audit_alloc(struct task_struct
*task
)
339 static inline void audit_free(struct task_struct
*task
)
341 static inline void audit_syscall_entry(int major
, unsigned long a0
,
342 unsigned long a1
, unsigned long a2
,
345 static inline void audit_syscall_exit(void *pt_regs
)
347 static inline int audit_dummy_context(void)
351 static inline struct filename
*audit_reusename(const __user
char *name
)
355 static inline void audit_getname(struct filename
*name
)
357 static inline void __audit_inode(struct filename
*name
,
358 const struct dentry
*dentry
,
361 static inline void __audit_inode_child(const struct inode
*parent
,
362 const struct dentry
*dentry
,
363 const unsigned char type
)
365 static inline void audit_inode(struct filename
*name
,
366 const struct dentry
*dentry
,
369 static inline void audit_file(struct file
*file
)
372 static inline void audit_inode_parent_hidden(struct filename
*name
,
373 const struct dentry
*dentry
)
375 static inline void audit_inode_child(const struct inode
*parent
,
376 const struct dentry
*dentry
,
377 const unsigned char type
)
379 static inline void audit_core_dumps(long signr
)
381 static inline void __audit_seccomp(unsigned long syscall
, long signr
, int code
)
383 static inline void audit_seccomp(unsigned long syscall
, long signr
, int code
)
385 static inline int auditsc_get_stamp(struct audit_context
*ctx
,
386 struct timespec
*t
, unsigned int *serial
)
390 static inline kuid_t
audit_get_loginuid(struct task_struct
*tsk
)
394 static inline unsigned int audit_get_sessionid(struct task_struct
*tsk
)
398 static inline void audit_ipc_obj(struct kern_ipc_perm
*ipcp
)
400 static inline void audit_ipc_set_perm(unsigned long qbytes
, uid_t uid
,
401 gid_t gid
, umode_t mode
)
403 static inline void audit_bprm(struct linux_binprm
*bprm
)
405 static inline int audit_socketcall(int nargs
, unsigned long *args
)
409 static inline void audit_fd_pair(int fd1
, int fd2
)
411 static inline int audit_sockaddr(int len
, void *addr
)
415 static inline void audit_mq_open(int oflag
, umode_t mode
, struct mq_attr
*attr
)
417 static inline void audit_mq_sendrecv(mqd_t mqdes
, size_t msg_len
,
418 unsigned int msg_prio
,
419 const struct timespec
*abs_timeout
)
421 static inline void audit_mq_notify(mqd_t mqdes
,
422 const struct sigevent
*notification
)
424 static inline void audit_mq_getsetattr(mqd_t mqdes
, struct mq_attr
*mqstat
)
426 static inline int audit_log_bprm_fcaps(struct linux_binprm
*bprm
,
427 const struct cred
*new,
428 const struct cred
*old
)
432 static inline void audit_log_capset(const struct cred
*new,
433 const struct cred
*old
)
435 static inline void audit_mmap_fd(int fd
, int flags
)
437 static inline void audit_ptrace(struct task_struct
*t
)
439 #define audit_n_rules 0
440 #define audit_signals 0
441 #endif /* CONFIG_AUDITSYSCALL */
443 static inline bool audit_loginuid_set(struct task_struct
*tsk
)
445 return uid_valid(audit_get_loginuid(tsk
));
449 /* These are defined in audit.c */
451 extern __printf(4, 5)
452 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
453 const char *fmt
, ...);
455 extern struct audit_buffer
*audit_log_start(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
);
456 extern __printf(2, 3)
457 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...);
458 extern void audit_log_end(struct audit_buffer
*ab
);
459 extern int audit_string_contains_control(const char *string
,
461 extern void audit_log_n_hex(struct audit_buffer
*ab
,
462 const unsigned char *buf
,
464 extern void audit_log_n_string(struct audit_buffer
*ab
,
467 extern void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
470 extern void audit_log_untrustedstring(struct audit_buffer
*ab
,
472 extern void audit_log_d_path(struct audit_buffer
*ab
,
474 const struct path
*path
);
475 extern void audit_log_key(struct audit_buffer
*ab
,
477 extern void audit_log_link_denied(const char *operation
,
479 extern void audit_log_lost(const char *message
);
480 #ifdef CONFIG_SECURITY
481 extern void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
);
483 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
487 extern int audit_log_task_context(struct audit_buffer
*ab
);
488 extern void audit_log_task_info(struct audit_buffer
*ab
,
489 struct task_struct
*tsk
);
491 extern int audit_update_lsm_rules(void);
493 /* Private API (for audit.c only) */
494 extern int audit_filter_user(int type
);
495 extern int audit_filter_type(int type
);
496 extern int audit_rule_change(int type
, __u32 portid
, int seq
,
497 void *data
, size_t datasz
);
498 extern int audit_list_rules_send(struct sk_buff
*request_skb
, int seq
);
500 extern u32 audit_enabled
;
501 #else /* CONFIG_AUDIT */
502 static inline __printf(4, 5)
503 void audit_log(struct audit_context
*ctx
, gfp_t gfp_mask
, int type
,
504 const char *fmt
, ...)
506 static inline struct audit_buffer
*audit_log_start(struct audit_context
*ctx
,
507 gfp_t gfp_mask
, int type
)
511 static inline __printf(2, 3)
512 void audit_log_format(struct audit_buffer
*ab
, const char *fmt
, ...)
514 static inline void audit_log_end(struct audit_buffer
*ab
)
516 static inline void audit_log_n_hex(struct audit_buffer
*ab
,
517 const unsigned char *buf
, size_t len
)
519 static inline void audit_log_n_string(struct audit_buffer
*ab
,
520 const char *buf
, size_t n
)
522 static inline void audit_log_n_untrustedstring(struct audit_buffer
*ab
,
523 const char *string
, size_t n
)
525 static inline void audit_log_untrustedstring(struct audit_buffer
*ab
,
528 static inline void audit_log_d_path(struct audit_buffer
*ab
,
530 const struct path
*path
)
532 static inline void audit_log_key(struct audit_buffer
*ab
, char *key
)
534 static inline void audit_log_link_denied(const char *string
,
535 const struct path
*link
)
537 static inline void audit_log_secctx(struct audit_buffer
*ab
, u32 secid
)
539 static inline int audit_log_task_context(struct audit_buffer
*ab
)
543 static inline void audit_log_task_info(struct audit_buffer
*ab
,
544 struct task_struct
*tsk
)
546 #define audit_enabled 0
547 #endif /* CONFIG_AUDIT */
548 static inline void audit_log_string(struct audit_buffer
*ab
, const char *buf
)
550 audit_log_n_string(ab
, buf
, strlen(buf
));
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