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));