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 */
89 #ifdef CONFIG_AUDITSYSCALL
90 /* These are defined in auditsc.c */
92 extern int audit_alloc(struct task_struct *task);
93 extern void __audit_free(struct task_struct *task);
94 extern void __audit_syscall_entry(int arch,
95 int major, unsigned long a0, unsigned long a1,
96 unsigned long a2, unsigned long a3);
97 extern void __audit_syscall_exit(int ret_success, long ret_value);
98 extern struct filename *__audit_reusename(const __user char *uptr);
99 extern void __audit_getname(struct filename *name);
100 extern void audit_putname(struct filename *name);
101 extern void __audit_inode(struct filename *name, const struct dentry *dentry,
102 unsigned int parent);
103 extern void __audit_inode_child(const struct inode *parent,
104 const struct dentry *dentry,
105 const unsigned char type);
106 extern void __audit_seccomp(unsigned long syscall, long signr, int code);
107 extern void __audit_ptrace(struct task_struct *t);
109 static inline int audit_dummy_context(void)
111 void *p = current->audit_context;
112 return !p || *(int *)p;
114 static inline void audit_free(struct task_struct *task)
116 if (unlikely(task->audit_context))
119 static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
120 unsigned long a1, unsigned long a2,
123 if (unlikely(!audit_dummy_context()))
124 __audit_syscall_entry(arch, major, a0, a1, a2, a3);
126 static inline void audit_syscall_exit(void *pt_regs)
128 if (unlikely(current->audit_context)) {
129 int success = is_syscall_success(pt_regs);
130 int return_code = regs_return_value(pt_regs);
132 __audit_syscall_exit(success, return_code);
135 static inline struct filename *audit_reusename(const __user char *name)
137 if (unlikely(!audit_dummy_context()))
138 return __audit_reusename(name);
141 static inline void audit_getname(struct filename *name)
143 if (unlikely(!audit_dummy_context()))
144 __audit_getname(name);
146 static inline void audit_inode(struct filename *name, const struct dentry *dentry,
147 unsigned int parent) {
148 if (unlikely(!audit_dummy_context()))
149 __audit_inode(name, dentry, parent);
151 static inline void audit_inode_child(const struct inode *parent,
152 const struct dentry *dentry,
153 const unsigned char type) {
154 if (unlikely(!audit_dummy_context()))
155 __audit_inode_child(parent, dentry, type);
157 void audit_core_dumps(long signr);
159 static inline void audit_seccomp(unsigned long syscall, long signr, int code)
161 /* Force a record to be reported if a signal was delivered. */
162 if (signr || unlikely(!audit_dummy_context()))
163 __audit_seccomp(syscall, signr, code);
166 static inline void audit_ptrace(struct task_struct *t)
168 if (unlikely(!audit_dummy_context()))
172 /* Private API (for audit.c only) */
173 extern unsigned int audit_serial(void);
174 extern int auditsc_get_stamp(struct audit_context *ctx,
175 struct timespec *t, unsigned int *serial);
176 extern int audit_set_loginuid(kuid_t loginuid);
178 static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
180 return tsk->loginuid;
183 static inline int audit_get_sessionid(struct task_struct *tsk)
185 return tsk->sessionid;
188 extern void audit_log_task_context(struct audit_buffer *ab);
189 extern void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk);
190 extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
191 extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
192 extern int __audit_bprm(struct linux_binprm *bprm);
193 extern void __audit_socketcall(int nargs, unsigned long *args);
194 extern int __audit_sockaddr(int len, void *addr);
195 extern void __audit_fd_pair(int fd1, int fd2);
196 extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
197 extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
198 extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
199 extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
200 extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
201 const struct cred *new,
202 const struct cred *old);
203 extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
204 extern void __audit_mmap_fd(int fd, int flags);
206 static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
208 if (unlikely(!audit_dummy_context()))
209 __audit_ipc_obj(ipcp);
211 static inline void audit_fd_pair(int fd1, int fd2)
213 if (unlikely(!audit_dummy_context()))
214 __audit_fd_pair(fd1, fd2);
216 static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
218 if (unlikely(!audit_dummy_context()))
219 __audit_ipc_set_perm(qbytes, uid, gid, mode);
221 static inline int audit_bprm(struct linux_binprm *bprm)
223 if (unlikely(!audit_dummy_context()))
224 return __audit_bprm(bprm);
227 static inline void audit_socketcall(int nargs, unsigned long *args)
229 if (unlikely(!audit_dummy_context()))
230 __audit_socketcall(nargs, args);
232 static inline int audit_sockaddr(int len, void *addr)
234 if (unlikely(!audit_dummy_context()))
235 return __audit_sockaddr(len, addr);
238 static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
240 if (unlikely(!audit_dummy_context()))
241 __audit_mq_open(oflag, mode, attr);
243 static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
245 if (unlikely(!audit_dummy_context()))
246 __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
248 static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
250 if (unlikely(!audit_dummy_context()))
251 __audit_mq_notify(mqdes, notification);
253 static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
255 if (unlikely(!audit_dummy_context()))
256 __audit_mq_getsetattr(mqdes, mqstat);
259 static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
260 const struct cred *new,
261 const struct cred *old)
263 if (unlikely(!audit_dummy_context()))
264 return __audit_log_bprm_fcaps(bprm, new, old);
268 static inline void audit_log_capset(pid_t pid, const struct cred *new,
269 const struct cred *old)
271 if (unlikely(!audit_dummy_context()))
272 __audit_log_capset(pid, new, old);
275 static inline void audit_mmap_fd(int fd, int flags)
277 if (unlikely(!audit_dummy_context()))
278 __audit_mmap_fd(fd, flags);
281 extern int audit_n_rules;
282 extern int audit_signals;
283 #else /* CONFIG_AUDITSYSCALL */
284 static inline int audit_alloc(struct task_struct *task)
288 static inline void audit_free(struct task_struct *task)
290 static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
291 unsigned long a1, unsigned long a2,
294 static inline void audit_syscall_exit(void *pt_regs)
296 static inline int audit_dummy_context(void)
300 static inline struct filename *audit_reusename(const __user char *name)
304 static inline void audit_getname(struct filename *name)
306 static inline void audit_putname(struct filename *name)
308 static inline void __audit_inode(struct filename *name,
309 const struct dentry *dentry,
312 static inline void __audit_inode_child(const struct inode *parent,
313 const struct dentry *dentry,
314 const unsigned char type)
316 static inline void audit_inode(struct filename *name,
317 const struct dentry *dentry,
320 static inline void audit_inode_child(const struct inode *parent,
321 const struct dentry *dentry,
322 const unsigned char type)
324 static inline void audit_core_dumps(long signr)
326 static inline void __audit_seccomp(unsigned long syscall, long signr, int code)
328 static inline void audit_seccomp(unsigned long syscall, long signr, int code)
330 static inline int auditsc_get_stamp(struct audit_context *ctx,
331 struct timespec *t, unsigned int *serial)
335 static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
339 static inline int audit_get_sessionid(struct task_struct *tsk)
343 static inline void audit_log_task_context(struct audit_buffer *ab)
345 static inline void audit_log_task_info(struct audit_buffer *ab,
346 struct task_struct *tsk)
348 static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
350 static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
351 gid_t gid, umode_t mode)
353 static inline int audit_bprm(struct linux_binprm *bprm)
357 static inline void audit_socketcall(int nargs, unsigned long *args)
359 static inline void audit_fd_pair(int fd1, int fd2)
361 static inline int audit_sockaddr(int len, void *addr)
365 static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
367 static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
368 unsigned int msg_prio,
369 const struct timespec *abs_timeout)
371 static inline void audit_mq_notify(mqd_t mqdes,
372 const struct sigevent *notification)
374 static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
376 static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
377 const struct cred *new,
378 const struct cred *old)
382 static inline void audit_log_capset(pid_t pid, const struct cred *new,
383 const struct cred *old)
385 static inline void audit_mmap_fd(int fd, int flags)
387 static inline void audit_ptrace(struct task_struct *t)
389 #define audit_n_rules 0
390 #define audit_signals 0
391 #endif /* CONFIG_AUDITSYSCALL */
394 /* These are defined in audit.c */
396 extern __printf(4, 5)
397 void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
398 const char *fmt, ...);
400 extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
401 extern __printf(2, 3)
402 void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
403 extern void audit_log_end(struct audit_buffer *ab);
404 extern int audit_string_contains_control(const char *string,
406 extern void audit_log_n_hex(struct audit_buffer *ab,
407 const unsigned char *buf,
409 extern void audit_log_n_string(struct audit_buffer *ab,
412 extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
415 extern void audit_log_untrustedstring(struct audit_buffer *ab,
417 extern void audit_log_d_path(struct audit_buffer *ab,
419 const struct path *path);
420 extern void audit_log_key(struct audit_buffer *ab,
422 extern void audit_log_link_denied(const char *operation,
424 extern void audit_log_lost(const char *message);
425 #ifdef CONFIG_SECURITY
426 extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
428 static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
432 extern int audit_update_lsm_rules(void);
434 /* Private API (for audit.c only) */
435 extern int audit_filter_user(void);
436 extern int audit_filter_type(int type);
437 extern int audit_receive_filter(int type, int pid, int seq,
438 void *data, size_t datasz, kuid_t loginuid,
439 u32 sessionid, u32 sid);
440 extern int audit_enabled;
441 #else /* CONFIG_AUDIT */
442 static inline __printf(4, 5)
443 void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
444 const char *fmt, ...)
446 static inline struct audit_buffer *audit_log_start(struct audit_context *ctx,
447 gfp_t gfp_mask, int type)
451 static inline __printf(2, 3)
452 void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
454 static inline void audit_log_end(struct audit_buffer *ab)
456 static inline void audit_log_n_hex(struct audit_buffer *ab,
457 const unsigned char *buf, size_t len)
459 static inline void audit_log_n_string(struct audit_buffer *ab,
460 const char *buf, size_t n)
462 static inline void audit_log_n_untrustedstring(struct audit_buffer *ab,
463 const char *string, size_t n)
465 static inline void audit_log_untrustedstring(struct audit_buffer *ab,
468 static inline void audit_log_d_path(struct audit_buffer *ab,
470 const struct path *path)
472 static inline void audit_log_key(struct audit_buffer *ab, char *key)
474 static inline void audit_log_link_denied(const char *string,
475 const struct path *link)
477 static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
479 #define audit_enabled 0
480 #endif /* CONFIG_AUDIT */
481 static inline void audit_log_string(struct audit_buffer *ab, const char *buf)
483 audit_log_n_string(ab, buf, strlen(buf));