Merge branch 'for-3.11' of git://linux-nfs.org/~bfields/linux
[linux-2.6.git] / include / linux / audit.h
blob729a4d165bcc52b444ee0ea89e8faac36f6518f1
1 /* audit.h -- Auditing support
3 * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
4 * All Rights Reserved.
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 {
31 uid_t uid;
32 pid_t pid;
33 char ctx[0];
36 struct audit_buffer;
37 struct audit_context;
38 struct inode;
39 struct netlink_skb_parms;
40 struct path;
41 struct linux_binprm;
42 struct mq_attr;
43 struct mqstat;
44 struct audit_watch;
45 struct audit_tree;
47 struct audit_krule {
48 int vers_ops;
49 u32 flags;
50 u32 listnr;
51 u32 action;
52 u32 mask[AUDIT_BITMASK_SIZE];
53 u32 buflen; /* for data alloc on list rules */
54 u32 field_count;
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 */
63 u64 prio;
66 struct audit_field {
67 u32 type;
68 u32 val;
69 kuid_t uid;
70 kgid_t gid;
71 u32 op;
72 char *lsm_str;
73 void *lsm_rule;
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
90 struct filename;
92 extern void audit_log_session_info(struct audit_buffer *ab);
94 #ifdef CONFIG_AUDITSYSCALL
95 /* These are defined in auditsc.c */
96 /* Public API */
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);
107 #define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
108 #define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
109 extern void __audit_inode(struct filename *name, const struct dentry *dentry,
110 unsigned int flags);
111 extern void __audit_inode_child(const struct inode *parent,
112 const struct dentry *dentry,
113 const unsigned char type);
114 extern void __audit_seccomp(unsigned long syscall, long signr, int code);
115 extern void __audit_ptrace(struct task_struct *t);
117 static inline int audit_dummy_context(void)
119 void *p = current->audit_context;
120 return !p || *(int *)p;
122 static inline void audit_free(struct task_struct *task)
124 if (unlikely(task->audit_context))
125 __audit_free(task);
127 static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
128 unsigned long a1, unsigned long a2,
129 unsigned long a3)
131 if (unlikely(current->audit_context))
132 __audit_syscall_entry(arch, major, a0, a1, a2, a3);
134 static inline void audit_syscall_exit(void *pt_regs)
136 if (unlikely(current->audit_context)) {
137 int success = is_syscall_success(pt_regs);
138 int return_code = regs_return_value(pt_regs);
140 __audit_syscall_exit(success, return_code);
143 static inline struct filename *audit_reusename(const __user char *name)
145 if (unlikely(!audit_dummy_context()))
146 return __audit_reusename(name);
147 return NULL;
149 static inline void audit_getname(struct filename *name)
151 if (unlikely(!audit_dummy_context()))
152 __audit_getname(name);
154 static inline void audit_inode(struct filename *name,
155 const struct dentry *dentry,
156 unsigned int parent) {
157 if (unlikely(!audit_dummy_context())) {
158 unsigned int flags = 0;
159 if (parent)
160 flags |= AUDIT_INODE_PARENT;
161 __audit_inode(name, dentry, flags);
164 static inline void audit_inode_parent_hidden(struct filename *name,
165 const struct dentry *dentry)
167 if (unlikely(!audit_dummy_context()))
168 __audit_inode(name, dentry,
169 AUDIT_INODE_PARENT | AUDIT_INODE_HIDDEN);
171 static inline void audit_inode_child(const struct inode *parent,
172 const struct dentry *dentry,
173 const unsigned char type) {
174 if (unlikely(!audit_dummy_context()))
175 __audit_inode_child(parent, dentry, type);
177 void audit_core_dumps(long signr);
179 static inline void audit_seccomp(unsigned long syscall, long signr, int code)
181 /* Force a record to be reported if a signal was delivered. */
182 if (signr || unlikely(!audit_dummy_context()))
183 __audit_seccomp(syscall, signr, code);
186 static inline void audit_ptrace(struct task_struct *t)
188 if (unlikely(!audit_dummy_context()))
189 __audit_ptrace(t);
192 /* Private API (for audit.c only) */
193 extern unsigned int audit_serial(void);
194 extern int auditsc_get_stamp(struct audit_context *ctx,
195 struct timespec *t, unsigned int *serial);
196 extern int audit_set_loginuid(kuid_t loginuid);
198 static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
200 return tsk->loginuid;
203 static inline int audit_get_sessionid(struct task_struct *tsk)
205 return tsk->sessionid;
208 extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
209 extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
210 extern int __audit_bprm(struct linux_binprm *bprm);
211 extern int __audit_socketcall(int nargs, unsigned long *args);
212 extern int __audit_sockaddr(int len, void *addr);
213 extern void __audit_fd_pair(int fd1, int fd2);
214 extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
215 extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
216 extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
217 extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
218 extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
219 const struct cred *new,
220 const struct cred *old);
221 extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
222 extern void __audit_mmap_fd(int fd, int flags);
224 static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
226 if (unlikely(!audit_dummy_context()))
227 __audit_ipc_obj(ipcp);
229 static inline void audit_fd_pair(int fd1, int fd2)
231 if (unlikely(!audit_dummy_context()))
232 __audit_fd_pair(fd1, fd2);
234 static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
236 if (unlikely(!audit_dummy_context()))
237 __audit_ipc_set_perm(qbytes, uid, gid, mode);
239 static inline int audit_bprm(struct linux_binprm *bprm)
241 if (unlikely(!audit_dummy_context()))
242 return __audit_bprm(bprm);
243 return 0;
245 static inline int audit_socketcall(int nargs, unsigned long *args)
247 if (unlikely(!audit_dummy_context()))
248 return __audit_socketcall(nargs, args);
249 return 0;
251 static inline int audit_sockaddr(int len, void *addr)
253 if (unlikely(!audit_dummy_context()))
254 return __audit_sockaddr(len, addr);
255 return 0;
257 static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
259 if (unlikely(!audit_dummy_context()))
260 __audit_mq_open(oflag, mode, attr);
262 static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
264 if (unlikely(!audit_dummy_context()))
265 __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
267 static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
269 if (unlikely(!audit_dummy_context()))
270 __audit_mq_notify(mqdes, notification);
272 static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
274 if (unlikely(!audit_dummy_context()))
275 __audit_mq_getsetattr(mqdes, mqstat);
278 static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
279 const struct cred *new,
280 const struct cred *old)
282 if (unlikely(!audit_dummy_context()))
283 return __audit_log_bprm_fcaps(bprm, new, old);
284 return 0;
287 static inline void audit_log_capset(pid_t pid, const struct cred *new,
288 const struct cred *old)
290 if (unlikely(!audit_dummy_context()))
291 __audit_log_capset(pid, new, old);
294 static inline void audit_mmap_fd(int fd, int flags)
296 if (unlikely(!audit_dummy_context()))
297 __audit_mmap_fd(fd, flags);
300 extern int audit_n_rules;
301 extern int audit_signals;
302 #else /* CONFIG_AUDITSYSCALL */
303 static inline int audit_alloc(struct task_struct *task)
305 return 0;
307 static inline void audit_free(struct task_struct *task)
309 static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
310 unsigned long a1, unsigned long a2,
311 unsigned long a3)
313 static inline void audit_syscall_exit(void *pt_regs)
315 static inline int audit_dummy_context(void)
317 return 1;
319 static inline struct filename *audit_reusename(const __user char *name)
321 return NULL;
323 static inline void audit_getname(struct filename *name)
325 static inline void audit_putname(struct filename *name)
327 static inline void __audit_inode(struct filename *name,
328 const struct dentry *dentry,
329 unsigned int flags)
331 static inline void __audit_inode_child(const struct inode *parent,
332 const struct dentry *dentry,
333 const unsigned char type)
335 static inline void audit_inode(struct filename *name,
336 const struct dentry *dentry,
337 unsigned int parent)
339 static inline void audit_inode_parent_hidden(struct filename *name,
340 const struct dentry *dentry)
342 static inline void audit_inode_child(const struct inode *parent,
343 const struct dentry *dentry,
344 const unsigned char type)
346 static inline void audit_core_dumps(long signr)
348 static inline void __audit_seccomp(unsigned long syscall, long signr, int code)
350 static inline void audit_seccomp(unsigned long syscall, long signr, int code)
352 static inline int auditsc_get_stamp(struct audit_context *ctx,
353 struct timespec *t, unsigned int *serial)
355 return 0;
357 static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
359 return INVALID_UID;
361 static inline int audit_get_sessionid(struct task_struct *tsk)
363 return -1;
365 static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
367 static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
368 gid_t gid, umode_t mode)
370 static inline int audit_bprm(struct linux_binprm *bprm)
372 return 0;
374 static inline int audit_socketcall(int nargs, unsigned long *args)
376 return 0;
378 static inline void audit_fd_pair(int fd1, int fd2)
380 static inline int audit_sockaddr(int len, void *addr)
382 return 0;
384 static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
386 static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
387 unsigned int msg_prio,
388 const struct timespec *abs_timeout)
390 static inline void audit_mq_notify(mqd_t mqdes,
391 const struct sigevent *notification)
393 static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
395 static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
396 const struct cred *new,
397 const struct cred *old)
399 return 0;
401 static inline void audit_log_capset(pid_t pid, const struct cred *new,
402 const struct cred *old)
404 static inline void audit_mmap_fd(int fd, int flags)
406 static inline void audit_ptrace(struct task_struct *t)
408 #define audit_n_rules 0
409 #define audit_signals 0
410 #endif /* CONFIG_AUDITSYSCALL */
412 static inline bool audit_loginuid_set(struct task_struct *tsk)
414 return uid_valid(audit_get_loginuid(tsk));
417 #ifdef CONFIG_AUDIT
418 /* These are defined in audit.c */
419 /* Public API */
420 extern __printf(4, 5)
421 void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
422 const char *fmt, ...);
424 extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
425 extern __printf(2, 3)
426 void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
427 extern void audit_log_end(struct audit_buffer *ab);
428 extern int audit_string_contains_control(const char *string,
429 size_t len);
430 extern void audit_log_n_hex(struct audit_buffer *ab,
431 const unsigned char *buf,
432 size_t len);
433 extern void audit_log_n_string(struct audit_buffer *ab,
434 const char *buf,
435 size_t n);
436 extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
437 const char *string,
438 size_t n);
439 extern void audit_log_untrustedstring(struct audit_buffer *ab,
440 const char *string);
441 extern void audit_log_d_path(struct audit_buffer *ab,
442 const char *prefix,
443 const struct path *path);
444 extern void audit_log_key(struct audit_buffer *ab,
445 char *key);
446 extern void audit_log_link_denied(const char *operation,
447 struct path *link);
448 extern void audit_log_lost(const char *message);
449 #ifdef CONFIG_SECURITY
450 extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
451 #else
452 static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
454 #endif
456 extern int audit_log_task_context(struct audit_buffer *ab);
457 extern void audit_log_task_info(struct audit_buffer *ab,
458 struct task_struct *tsk);
460 extern int audit_update_lsm_rules(void);
462 /* Private API (for audit.c only) */
463 extern int audit_filter_user(int type);
464 extern int audit_filter_type(int type);
465 extern int audit_receive_filter(int type, int pid, int seq,
466 void *data, size_t datasz);
467 extern int audit_enabled;
468 #else /* CONFIG_AUDIT */
469 static inline __printf(4, 5)
470 void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
471 const char *fmt, ...)
473 static inline struct audit_buffer *audit_log_start(struct audit_context *ctx,
474 gfp_t gfp_mask, int type)
476 return NULL;
478 static inline __printf(2, 3)
479 void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
481 static inline void audit_log_end(struct audit_buffer *ab)
483 static inline void audit_log_n_hex(struct audit_buffer *ab,
484 const unsigned char *buf, size_t len)
486 static inline void audit_log_n_string(struct audit_buffer *ab,
487 const char *buf, size_t n)
489 static inline void audit_log_n_untrustedstring(struct audit_buffer *ab,
490 const char *string, size_t n)
492 static inline void audit_log_untrustedstring(struct audit_buffer *ab,
493 const char *string)
495 static inline void audit_log_d_path(struct audit_buffer *ab,
496 const char *prefix,
497 const struct path *path)
499 static inline void audit_log_key(struct audit_buffer *ab, char *key)
501 static inline void audit_log_link_denied(const char *string,
502 const struct path *link)
504 static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
506 static inline int audit_log_task_context(struct audit_buffer *ab)
508 return 0;
510 static inline void audit_log_task_info(struct audit_buffer *ab,
511 struct task_struct *tsk)
513 #define audit_enabled 0
514 #endif /* CONFIG_AUDIT */
515 static inline void audit_log_string(struct audit_buffer *ab, const char *buf)
517 audit_log_n_string(ab, buf, strlen(buf));
520 #endif