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audit: allow interfield comparison in audit rules
[deliverable/linux.git] / include / linux / audit.h
1 /* audit.h -- Auditing support
2 *
3 * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
4 * All Rights Reserved.
5 *
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.
10 *
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.
15 *
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
19 *
20 * Written by Rickard E. (Rik) Faith <faith@redhat.com>
21 *
22 */
23
24 #ifndef _LINUX_AUDIT_H_
25 #define _LINUX_AUDIT_H_
26
27 #include <linux/types.h>
28 #include <linux/elf-em.h>
29 #include <linux/ptrace.h>
30
31 /* The netlink messages for the audit system is divided into blocks:
32 * 1000 - 1099 are for commanding the audit system
33 * 1100 - 1199 user space trusted application messages
34 * 1200 - 1299 messages internal to the audit daemon
35 * 1300 - 1399 audit event messages
36 * 1400 - 1499 SE Linux use
37 * 1500 - 1599 kernel LSPP events
38 * 1600 - 1699 kernel crypto events
39 * 1700 - 1799 kernel anomaly records
40 * 1800 - 1899 kernel integrity events
41 * 1900 - 1999 future kernel use
42 * 2000 is for otherwise unclassified kernel audit messages (legacy)
43 * 2001 - 2099 unused (kernel)
44 * 2100 - 2199 user space anomaly records
45 * 2200 - 2299 user space actions taken in response to anomalies
46 * 2300 - 2399 user space generated LSPP events
47 * 2400 - 2499 user space crypto events
48 * 2500 - 2999 future user space (maybe integrity labels and related events)
49 *
50 * Messages from 1000-1199 are bi-directional. 1200-1299 & 2100 - 2999 are
51 * exclusively user space. 1300-2099 is kernel --> user space
52 * communication.
53 */
54 #define AUDIT_GET 1000 /* Get status */
55 #define AUDIT_SET 1001 /* Set status (enable/disable/auditd) */
56 #define AUDIT_LIST 1002 /* List syscall rules -- deprecated */
57 #define AUDIT_ADD 1003 /* Add syscall rule -- deprecated */
58 #define AUDIT_DEL 1004 /* Delete syscall rule -- deprecated */
59 #define AUDIT_USER 1005 /* Message from userspace -- deprecated */
60 #define AUDIT_LOGIN 1006 /* Define the login id and information */
61 #define AUDIT_WATCH_INS 1007 /* Insert file/dir watch entry */
62 #define AUDIT_WATCH_REM 1008 /* Remove file/dir watch entry */
63 #define AUDIT_WATCH_LIST 1009 /* List all file/dir watches */
64 #define AUDIT_SIGNAL_INFO 1010 /* Get info about sender of signal to auditd */
65 #define AUDIT_ADD_RULE 1011 /* Add syscall filtering rule */
66 #define AUDIT_DEL_RULE 1012 /* Delete syscall filtering rule */
67 #define AUDIT_LIST_RULES 1013 /* List syscall filtering rules */
68 #define AUDIT_TRIM 1014 /* Trim junk from watched tree */
69 #define AUDIT_MAKE_EQUIV 1015 /* Append to watched tree */
70 #define AUDIT_TTY_GET 1016 /* Get TTY auditing status */
71 #define AUDIT_TTY_SET 1017 /* Set TTY auditing status */
72
73 #define AUDIT_FIRST_USER_MSG 1100 /* Userspace messages mostly uninteresting to kernel */
74 #define AUDIT_USER_AVC 1107 /* We filter this differently */
75 #define AUDIT_USER_TTY 1124 /* Non-ICANON TTY input meaning */
76 #define AUDIT_LAST_USER_MSG 1199
77 #define AUDIT_FIRST_USER_MSG2 2100 /* More user space messages */
78 #define AUDIT_LAST_USER_MSG2 2999
79
80 #define AUDIT_DAEMON_START 1200 /* Daemon startup record */
81 #define AUDIT_DAEMON_END 1201 /* Daemon normal stop record */
82 #define AUDIT_DAEMON_ABORT 1202 /* Daemon error stop record */
83 #define AUDIT_DAEMON_CONFIG 1203 /* Daemon config change */
84
85 #define AUDIT_SYSCALL 1300 /* Syscall event */
86 /* #define AUDIT_FS_WATCH 1301 * Deprecated */
87 #define AUDIT_PATH 1302 /* Filename path information */
88 #define AUDIT_IPC 1303 /* IPC record */
89 #define AUDIT_SOCKETCALL 1304 /* sys_socketcall arguments */
90 #define AUDIT_CONFIG_CHANGE 1305 /* Audit system configuration change */
91 #define AUDIT_SOCKADDR 1306 /* sockaddr copied as syscall arg */
92 #define AUDIT_CWD 1307 /* Current working directory */
93 #define AUDIT_EXECVE 1309 /* execve arguments */
94 #define AUDIT_IPC_SET_PERM 1311 /* IPC new permissions record type */
95 #define AUDIT_MQ_OPEN 1312 /* POSIX MQ open record type */
96 #define AUDIT_MQ_SENDRECV 1313 /* POSIX MQ send/receive record type */
97 #define AUDIT_MQ_NOTIFY 1314 /* POSIX MQ notify record type */
98 #define AUDIT_MQ_GETSETATTR 1315 /* POSIX MQ get/set attribute record type */
99 #define AUDIT_KERNEL_OTHER 1316 /* For use by 3rd party modules */
100 #define AUDIT_FD_PAIR 1317 /* audit record for pipe/socketpair */
101 #define AUDIT_OBJ_PID 1318 /* ptrace target */
102 #define AUDIT_TTY 1319 /* Input on an administrative TTY */
103 #define AUDIT_EOE 1320 /* End of multi-record event */
104 #define AUDIT_BPRM_FCAPS 1321 /* Information about fcaps increasing perms */
105 #define AUDIT_CAPSET 1322 /* Record showing argument to sys_capset */
106 #define AUDIT_MMAP 1323 /* Record showing descriptor and flags in mmap */
107 #define AUDIT_NETFILTER_PKT 1324 /* Packets traversing netfilter chains */
108 #define AUDIT_NETFILTER_CFG 1325 /* Netfilter chain modifications */
109
110 #define AUDIT_AVC 1400 /* SE Linux avc denial or grant */
111 #define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */
112 #define AUDIT_AVC_PATH 1402 /* dentry, vfsmount pair from avc */
113 #define AUDIT_MAC_POLICY_LOAD 1403 /* Policy file load */
114 #define AUDIT_MAC_STATUS 1404 /* Changed enforcing,permissive,off */
115 #define AUDIT_MAC_CONFIG_CHANGE 1405 /* Changes to booleans */
116 #define AUDIT_MAC_UNLBL_ALLOW 1406 /* NetLabel: allow unlabeled traffic */
117 #define AUDIT_MAC_CIPSOV4_ADD 1407 /* NetLabel: add CIPSOv4 DOI entry */
118 #define AUDIT_MAC_CIPSOV4_DEL 1408 /* NetLabel: del CIPSOv4 DOI entry */
119 #define AUDIT_MAC_MAP_ADD 1409 /* NetLabel: add LSM domain mapping */
120 #define AUDIT_MAC_MAP_DEL 1410 /* NetLabel: del LSM domain mapping */
121 #define AUDIT_MAC_IPSEC_ADDSA 1411 /* Not used */
122 #define AUDIT_MAC_IPSEC_DELSA 1412 /* Not used */
123 #define AUDIT_MAC_IPSEC_ADDSPD 1413 /* Not used */
124 #define AUDIT_MAC_IPSEC_DELSPD 1414 /* Not used */
125 #define AUDIT_MAC_IPSEC_EVENT 1415 /* Audit an IPSec event */
126 #define AUDIT_MAC_UNLBL_STCADD 1416 /* NetLabel: add a static label */
127 #define AUDIT_MAC_UNLBL_STCDEL 1417 /* NetLabel: del a static label */
128
129 #define AUDIT_FIRST_KERN_ANOM_MSG 1700
130 #define AUDIT_LAST_KERN_ANOM_MSG 1799
131 #define AUDIT_ANOM_PROMISCUOUS 1700 /* Device changed promiscuous mode */
132 #define AUDIT_ANOM_ABEND 1701 /* Process ended abnormally */
133 #define AUDIT_INTEGRITY_DATA 1800 /* Data integrity verification */
134 #define AUDIT_INTEGRITY_METADATA 1801 /* Metadata integrity verification */
135 #define AUDIT_INTEGRITY_STATUS 1802 /* Integrity enable status */
136 #define AUDIT_INTEGRITY_HASH 1803 /* Integrity HASH type */
137 #define AUDIT_INTEGRITY_PCR 1804 /* PCR invalidation msgs */
138 #define AUDIT_INTEGRITY_RULE 1805 /* policy rule */
139
140 #define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */
141
142 /* Rule flags */
143 #define AUDIT_FILTER_USER 0x00 /* Apply rule to user-generated messages */
144 #define AUDIT_FILTER_TASK 0x01 /* Apply rule at task creation (not syscall) */
145 #define AUDIT_FILTER_ENTRY 0x02 /* Apply rule at syscall entry */
146 #define AUDIT_FILTER_WATCH 0x03 /* Apply rule to file system watches */
147 #define AUDIT_FILTER_EXIT 0x04 /* Apply rule at syscall exit */
148 #define AUDIT_FILTER_TYPE 0x05 /* Apply rule at audit_log_start */
149
150 #define AUDIT_NR_FILTERS 6
151
152 #define AUDIT_FILTER_PREPEND 0x10 /* Prepend to front of list */
153
154 /* Rule actions */
155 #define AUDIT_NEVER 0 /* Do not build context if rule matches */
156 #define AUDIT_POSSIBLE 1 /* Build context if rule matches */
157 #define AUDIT_ALWAYS 2 /* Generate audit record if rule matches */
158
159 /* Rule structure sizes -- if these change, different AUDIT_ADD and
160 * AUDIT_LIST commands must be implemented. */
161 #define AUDIT_MAX_FIELDS 64
162 #define AUDIT_MAX_KEY_LEN 256
163 #define AUDIT_BITMASK_SIZE 64
164 #define AUDIT_WORD(nr) ((__u32)((nr)/32))
165 #define AUDIT_BIT(nr) (1 << ((nr) - AUDIT_WORD(nr)*32))
166
167 #define AUDIT_SYSCALL_CLASSES 16
168 #define AUDIT_CLASS_DIR_WRITE 0
169 #define AUDIT_CLASS_DIR_WRITE_32 1
170 #define AUDIT_CLASS_CHATTR 2
171 #define AUDIT_CLASS_CHATTR_32 3
172 #define AUDIT_CLASS_READ 4
173 #define AUDIT_CLASS_READ_32 5
174 #define AUDIT_CLASS_WRITE 6
175 #define AUDIT_CLASS_WRITE_32 7
176 #define AUDIT_CLASS_SIGNAL 8
177 #define AUDIT_CLASS_SIGNAL_32 9
178
179 /* This bitmask is used to validate user input. It represents all bits that
180 * are currently used in an audit field constant understood by the kernel.
181 * If you are adding a new #define AUDIT_<whatever>, please ensure that
182 * AUDIT_UNUSED_BITS is updated if need be. */
183 #define AUDIT_UNUSED_BITS 0x07FFFC00
184
185 /* AUDIT_FIELD_COMPARE rule list */
186 #define AUDIT_COMPARE_UID_TO_OBJ_UID 1
187
188 #define AUDIT_MAX_FIELD_COMPARE AUDIT_COMPARE_UID_TO_OBJ_UID
189 /* Rule fields */
190 /* These are useful when checking the
191 * task structure at task creation time
192 * (AUDIT_PER_TASK). */
193 #define AUDIT_PID 0
194 #define AUDIT_UID 1
195 #define AUDIT_EUID 2
196 #define AUDIT_SUID 3
197 #define AUDIT_FSUID 4
198 #define AUDIT_GID 5
199 #define AUDIT_EGID 6
200 #define AUDIT_SGID 7
201 #define AUDIT_FSGID 8
202 #define AUDIT_LOGINUID 9
203 #define AUDIT_PERS 10
204 #define AUDIT_ARCH 11
205 #define AUDIT_MSGTYPE 12
206 #define AUDIT_SUBJ_USER 13 /* security label user */
207 #define AUDIT_SUBJ_ROLE 14 /* security label role */
208 #define AUDIT_SUBJ_TYPE 15 /* security label type */
209 #define AUDIT_SUBJ_SEN 16 /* security label sensitivity label */
210 #define AUDIT_SUBJ_CLR 17 /* security label clearance label */
211 #define AUDIT_PPID 18
212 #define AUDIT_OBJ_USER 19
213 #define AUDIT_OBJ_ROLE 20
214 #define AUDIT_OBJ_TYPE 21
215 #define AUDIT_OBJ_LEV_LOW 22
216 #define AUDIT_OBJ_LEV_HIGH 23
217
218 /* These are ONLY useful when checking
219 * at syscall exit time (AUDIT_AT_EXIT). */
220 #define AUDIT_DEVMAJOR 100
221 #define AUDIT_DEVMINOR 101
222 #define AUDIT_INODE 102
223 #define AUDIT_EXIT 103
224 #define AUDIT_SUCCESS 104 /* exit >= 0; value ignored */
225 #define AUDIT_WATCH 105
226 #define AUDIT_PERM 106
227 #define AUDIT_DIR 107
228 #define AUDIT_FILETYPE 108
229 #define AUDIT_OBJ_UID 109
230 #define AUDIT_OBJ_GID 110
231 #define AUDIT_FIELD_COMPARE 111
232
233 #define AUDIT_ARG0 200
234 #define AUDIT_ARG1 (AUDIT_ARG0+1)
235 #define AUDIT_ARG2 (AUDIT_ARG0+2)
236 #define AUDIT_ARG3 (AUDIT_ARG0+3)
237
238 #define AUDIT_FILTERKEY 210
239
240 #define AUDIT_NEGATE 0x80000000
241
242 /* These are the supported operators.
243 * 4 2 1 8
244 * = > < ?
245 * ----------
246 * 0 0 0 0 00 nonsense
247 * 0 0 0 1 08 & bit mask
248 * 0 0 1 0 10 <
249 * 0 1 0 0 20 >
250 * 0 1 1 0 30 !=
251 * 1 0 0 0 40 =
252 * 1 0 0 1 48 &= bit test
253 * 1 0 1 0 50 <=
254 * 1 1 0 0 60 >=
255 * 1 1 1 1 78 all operators
256 */
257 #define AUDIT_BIT_MASK 0x08000000
258 #define AUDIT_LESS_THAN 0x10000000
259 #define AUDIT_GREATER_THAN 0x20000000
260 #define AUDIT_NOT_EQUAL 0x30000000
261 #define AUDIT_EQUAL 0x40000000
262 #define AUDIT_BIT_TEST (AUDIT_BIT_MASK|AUDIT_EQUAL)
263 #define AUDIT_LESS_THAN_OR_EQUAL (AUDIT_LESS_THAN|AUDIT_EQUAL)
264 #define AUDIT_GREATER_THAN_OR_EQUAL (AUDIT_GREATER_THAN|AUDIT_EQUAL)
265 #define AUDIT_OPERATORS (AUDIT_EQUAL|AUDIT_NOT_EQUAL|AUDIT_BIT_MASK)
266
267 enum {
268 Audit_equal,
269 Audit_not_equal,
270 Audit_bitmask,
271 Audit_bittest,
272 Audit_lt,
273 Audit_gt,
274 Audit_le,
275 Audit_ge,
276 Audit_bad
277 };
278
279 /* Status symbols */
280 /* Mask values */
281 #define AUDIT_STATUS_ENABLED 0x0001
282 #define AUDIT_STATUS_FAILURE 0x0002
283 #define AUDIT_STATUS_PID 0x0004
284 #define AUDIT_STATUS_RATE_LIMIT 0x0008
285 #define AUDIT_STATUS_BACKLOG_LIMIT 0x0010
286 /* Failure-to-log actions */
287 #define AUDIT_FAIL_SILENT 0
288 #define AUDIT_FAIL_PRINTK 1
289 #define AUDIT_FAIL_PANIC 2
290
291 /* distinguish syscall tables */
292 #define __AUDIT_ARCH_64BIT 0x80000000
293 #define __AUDIT_ARCH_LE 0x40000000
294 #define AUDIT_ARCH_ALPHA (EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
295 #define AUDIT_ARCH_ARM (EM_ARM|__AUDIT_ARCH_LE)
296 #define AUDIT_ARCH_ARMEB (EM_ARM)
297 #define AUDIT_ARCH_CRIS (EM_CRIS|__AUDIT_ARCH_LE)
298 #define AUDIT_ARCH_FRV (EM_FRV)
299 #define AUDIT_ARCH_H8300 (EM_H8_300)
300 #define AUDIT_ARCH_I386 (EM_386|__AUDIT_ARCH_LE)
301 #define AUDIT_ARCH_IA64 (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
302 #define AUDIT_ARCH_M32R (EM_M32R)
303 #define AUDIT_ARCH_M68K (EM_68K)
304 #define AUDIT_ARCH_MIPS (EM_MIPS)
305 #define AUDIT_ARCH_MIPSEL (EM_MIPS|__AUDIT_ARCH_LE)
306 #define AUDIT_ARCH_MIPS64 (EM_MIPS|__AUDIT_ARCH_64BIT)
307 #define AUDIT_ARCH_MIPSEL64 (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
308 #define AUDIT_ARCH_PARISC (EM_PARISC)
309 #define AUDIT_ARCH_PARISC64 (EM_PARISC|__AUDIT_ARCH_64BIT)
310 #define AUDIT_ARCH_PPC (EM_PPC)
311 #define AUDIT_ARCH_PPC64 (EM_PPC64|__AUDIT_ARCH_64BIT)
312 #define AUDIT_ARCH_S390 (EM_S390)
313 #define AUDIT_ARCH_S390X (EM_S390|__AUDIT_ARCH_64BIT)
314 #define AUDIT_ARCH_SH (EM_SH)
315 #define AUDIT_ARCH_SHEL (EM_SH|__AUDIT_ARCH_LE)
316 #define AUDIT_ARCH_SH64 (EM_SH|__AUDIT_ARCH_64BIT)
317 #define AUDIT_ARCH_SHEL64 (EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
318 #define AUDIT_ARCH_SPARC (EM_SPARC)
319 #define AUDIT_ARCH_SPARC64 (EM_SPARCV9|__AUDIT_ARCH_64BIT)
320 #define AUDIT_ARCH_X86_64 (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
321
322 #define AUDIT_PERM_EXEC 1
323 #define AUDIT_PERM_WRITE 2
324 #define AUDIT_PERM_READ 4
325 #define AUDIT_PERM_ATTR 8
326
327 struct audit_status {
328 __u32 mask; /* Bit mask for valid entries */
329 __u32 enabled; /* 1 = enabled, 0 = disabled */
330 __u32 failure; /* Failure-to-log action */
331 __u32 pid; /* pid of auditd process */
332 __u32 rate_limit; /* messages rate limit (per second) */
333 __u32 backlog_limit; /* waiting messages limit */
334 __u32 lost; /* messages lost */
335 __u32 backlog; /* messages waiting in queue */
336 };
337
338 struct audit_tty_status {
339 __u32 enabled; /* 1 = enabled, 0 = disabled */
340 };
341
342 /* audit_rule_data supports filter rules with both integer and string
343 * fields. It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
344 * AUDIT_LIST_RULES requests.
345 */
346 struct audit_rule_data {
347 __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
348 __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
349 __u32 field_count;
350 __u32 mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */
351 __u32 fields[AUDIT_MAX_FIELDS];
352 __u32 values[AUDIT_MAX_FIELDS];
353 __u32 fieldflags[AUDIT_MAX_FIELDS];
354 __u32 buflen; /* total length of string fields */
355 char buf[0]; /* string fields buffer */
356 };
357
358 /* audit_rule is supported to maintain backward compatibility with
359 * userspace. It supports integer fields only and corresponds to
360 * AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests.
361 */
362 struct audit_rule { /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
363 __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
364 __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
365 __u32 field_count;
366 __u32 mask[AUDIT_BITMASK_SIZE];
367 __u32 fields[AUDIT_MAX_FIELDS];
368 __u32 values[AUDIT_MAX_FIELDS];
369 };
370
371 #ifdef __KERNEL__
372 #include <linux/sched.h>
373
374 struct audit_sig_info {
375 uid_t uid;
376 pid_t pid;
377 char ctx[0];
378 };
379
380 struct audit_buffer;
381 struct audit_context;
382 struct inode;
383 struct netlink_skb_parms;
384 struct path;
385 struct linux_binprm;
386 struct mq_attr;
387 struct mqstat;
388 struct audit_watch;
389 struct audit_tree;
390
391 struct audit_krule {
392 int vers_ops;
393 u32 flags;
394 u32 listnr;
395 u32 action;
396 u32 mask[AUDIT_BITMASK_SIZE];
397 u32 buflen; /* for data alloc on list rules */
398 u32 field_count;
399 char *filterkey; /* ties events to rules */
400 struct audit_field *fields;
401 struct audit_field *arch_f; /* quick access to arch field */
402 struct audit_field *inode_f; /* quick access to an inode field */
403 struct audit_watch *watch; /* associated watch */
404 struct audit_tree *tree; /* associated watched tree */
405 struct list_head rlist; /* entry in audit_{watch,tree}.rules list */
406 struct list_head list; /* for AUDIT_LIST* purposes only */
407 u64 prio;
408 };
409
410 struct audit_field {
411 u32 type;
412 u32 val;
413 u32 op;
414 char *lsm_str;
415 void *lsm_rule;
416 };
417
418 extern int __init audit_register_class(int class, unsigned *list);
419 extern int audit_classify_syscall(int abi, unsigned syscall);
420 extern int audit_classify_arch(int arch);
421 #ifdef CONFIG_AUDITSYSCALL
422 /* These are defined in auditsc.c */
423 /* Public API */
424 extern int audit_alloc(struct task_struct *task);
425 extern void __audit_free(struct task_struct *task);
426 extern void __audit_syscall_entry(int arch,
427 int major, unsigned long a0, unsigned long a1,
428 unsigned long a2, unsigned long a3);
429 extern void __audit_syscall_exit(int ret_success, long ret_value);
430 extern void __audit_getname(const char *name);
431 extern void audit_putname(const char *name);
432 extern void __audit_inode(const char *name, const struct dentry *dentry);
433 extern void __audit_inode_child(const struct dentry *dentry,
434 const struct inode *parent);
435 extern void __audit_seccomp(unsigned long syscall);
436 extern void __audit_ptrace(struct task_struct *t);
437
438 static inline int audit_dummy_context(void)
439 {
440 void *p = current->audit_context;
441 return !p || *(int *)p;
442 }
443 static inline void audit_free(struct task_struct *task)
444 {
445 if (unlikely(task->audit_context))
446 __audit_free(task);
447 }
448 static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
449 unsigned long a1, unsigned long a2,
450 unsigned long a3)
451 {
452 if (unlikely(!audit_dummy_context()))
453 __audit_syscall_entry(arch, major, a0, a1, a2, a3);
454 }
455 static inline void audit_syscall_exit(void *pt_regs)
456 {
457 if (unlikely(current->audit_context)) {
458 int success = is_syscall_success(pt_regs);
459 int return_code = regs_return_value(pt_regs);
460
461 __audit_syscall_exit(success, return_code);
462 }
463 }
464 static inline void audit_getname(const char *name)
465 {
466 if (unlikely(!audit_dummy_context()))
467 __audit_getname(name);
468 }
469 static inline void audit_inode(const char *name, const struct dentry *dentry) {
470 if (unlikely(!audit_dummy_context()))
471 __audit_inode(name, dentry);
472 }
473 static inline void audit_inode_child(const struct dentry *dentry,
474 const struct inode *parent) {
475 if (unlikely(!audit_dummy_context()))
476 __audit_inode_child(dentry, parent);
477 }
478 void audit_core_dumps(long signr);
479
480 static inline void audit_seccomp(unsigned long syscall)
481 {
482 if (unlikely(!audit_dummy_context()))
483 __audit_seccomp(syscall);
484 }
485
486 static inline void audit_ptrace(struct task_struct *t)
487 {
488 if (unlikely(!audit_dummy_context()))
489 __audit_ptrace(t);
490 }
491
492 /* Private API (for audit.c only) */
493 extern unsigned int audit_serial(void);
494 extern int auditsc_get_stamp(struct audit_context *ctx,
495 struct timespec *t, unsigned int *serial);
496 extern int audit_set_loginuid(uid_t loginuid);
497 #define audit_get_loginuid(t) ((t)->loginuid)
498 #define audit_get_sessionid(t) ((t)->sessionid)
499 extern void audit_log_task_context(struct audit_buffer *ab);
500 extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
501 extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
502 extern int __audit_bprm(struct linux_binprm *bprm);
503 extern void __audit_socketcall(int nargs, unsigned long *args);
504 extern int __audit_sockaddr(int len, void *addr);
505 extern void __audit_fd_pair(int fd1, int fd2);
506 extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
507 extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
508 extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
509 extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
510 extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
511 const struct cred *new,
512 const struct cred *old);
513 extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
514 extern void __audit_mmap_fd(int fd, int flags);
515
516 static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
517 {
518 if (unlikely(!audit_dummy_context()))
519 __audit_ipc_obj(ipcp);
520 }
521 static inline void audit_fd_pair(int fd1, int fd2)
522 {
523 if (unlikely(!audit_dummy_context()))
524 __audit_fd_pair(fd1, fd2);
525 }
526 static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
527 {
528 if (unlikely(!audit_dummy_context()))
529 __audit_ipc_set_perm(qbytes, uid, gid, mode);
530 }
531 static inline int audit_bprm(struct linux_binprm *bprm)
532 {
533 if (unlikely(!audit_dummy_context()))
534 return __audit_bprm(bprm);
535 return 0;
536 }
537 static inline void audit_socketcall(int nargs, unsigned long *args)
538 {
539 if (unlikely(!audit_dummy_context()))
540 __audit_socketcall(nargs, args);
541 }
542 static inline int audit_sockaddr(int len, void *addr)
543 {
544 if (unlikely(!audit_dummy_context()))
545 return __audit_sockaddr(len, addr);
546 return 0;
547 }
548 static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
549 {
550 if (unlikely(!audit_dummy_context()))
551 __audit_mq_open(oflag, mode, attr);
552 }
553 static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
554 {
555 if (unlikely(!audit_dummy_context()))
556 __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
557 }
558 static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
559 {
560 if (unlikely(!audit_dummy_context()))
561 __audit_mq_notify(mqdes, notification);
562 }
563 static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
564 {
565 if (unlikely(!audit_dummy_context()))
566 __audit_mq_getsetattr(mqdes, mqstat);
567 }
568
569 static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
570 const struct cred *new,
571 const struct cred *old)
572 {
573 if (unlikely(!audit_dummy_context()))
574 return __audit_log_bprm_fcaps(bprm, new, old);
575 return 0;
576 }
577
578 static inline void audit_log_capset(pid_t pid, const struct cred *new,
579 const struct cred *old)
580 {
581 if (unlikely(!audit_dummy_context()))
582 __audit_log_capset(pid, new, old);
583 }
584
585 static inline void audit_mmap_fd(int fd, int flags)
586 {
587 if (unlikely(!audit_dummy_context()))
588 __audit_mmap_fd(fd, flags);
589 }
590
591 extern int audit_n_rules;
592 extern int audit_signals;
593 #else /* CONFIG_AUDITSYSCALL */
594 #define audit_alloc(t) ({ 0; })
595 #define audit_free(t) do { ; } while (0)
596 #define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
597 #define audit_syscall_exit(r) do { ; } while (0)
598 #define audit_dummy_context() 1
599 #define audit_getname(n) do { ; } while (0)
600 #define audit_putname(n) do { ; } while (0)
601 #define __audit_inode(n,d) do { ; } while (0)
602 #define __audit_inode_child(i,p) do { ; } while (0)
603 #define audit_inode(n,d) do { (void)(d); } while (0)
604 #define audit_inode_child(i,p) do { ; } while (0)
605 #define audit_core_dumps(i) do { ; } while (0)
606 #define audit_seccomp(i) do { ; } while (0)
607 #define auditsc_get_stamp(c,t,s) (0)
608 #define audit_get_loginuid(t) (-1)
609 #define audit_get_sessionid(t) (-1)
610 #define audit_log_task_context(b) do { ; } while (0)
611 #define audit_ipc_obj(i) ((void)0)
612 #define audit_ipc_set_perm(q,u,g,m) ((void)0)
613 #define audit_bprm(p) ({ 0; })
614 #define audit_socketcall(n,a) ((void)0)
615 #define audit_fd_pair(n,a) ((void)0)
616 #define audit_sockaddr(len, addr) ({ 0; })
617 #define audit_mq_open(o,m,a) ((void)0)
618 #define audit_mq_sendrecv(d,l,p,t) ((void)0)
619 #define audit_mq_notify(d,n) ((void)0)
620 #define audit_mq_getsetattr(d,s) ((void)0)
621 #define audit_log_bprm_fcaps(b, ncr, ocr) ({ 0; })
622 #define audit_log_capset(pid, ncr, ocr) ((void)0)
623 #define audit_mmap_fd(fd, flags) ((void)0)
624 #define audit_ptrace(t) ((void)0)
625 #define audit_n_rules 0
626 #define audit_signals 0
627 #endif /* CONFIG_AUDITSYSCALL */
628
629 #ifdef CONFIG_AUDIT
630 /* These are defined in audit.c */
631 /* Public API */
632 extern __printf(4, 5)
633 void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
634 const char *fmt, ...);
635
636 extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
637 extern __printf(2, 3)
638 void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
639 extern void audit_log_end(struct audit_buffer *ab);
640 extern int audit_string_contains_control(const char *string,
641 size_t len);
642 extern void audit_log_n_hex(struct audit_buffer *ab,
643 const unsigned char *buf,
644 size_t len);
645 extern void audit_log_n_string(struct audit_buffer *ab,
646 const char *buf,
647 size_t n);
648 #define audit_log_string(a,b) audit_log_n_string(a, b, strlen(b));
649 extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
650 const char *string,
651 size_t n);
652 extern void audit_log_untrustedstring(struct audit_buffer *ab,
653 const char *string);
654 extern void audit_log_d_path(struct audit_buffer *ab,
655 const char *prefix,
656 struct path *path);
657 extern void audit_log_key(struct audit_buffer *ab,
658 char *key);
659 extern void audit_log_lost(const char *message);
660 #ifdef CONFIG_SECURITY
661 extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
662 #else
663 #define audit_log_secctx(b,s) do { ; } while (0)
664 #endif
665
666 extern int audit_update_lsm_rules(void);
667
668 /* Private API (for audit.c only) */
669 extern int audit_filter_user(struct netlink_skb_parms *cb);
670 extern int audit_filter_type(int type);
671 extern int audit_receive_filter(int type, int pid, int uid, int seq,
672 void *data, size_t datasz, uid_t loginuid,
673 u32 sessionid, u32 sid);
674 extern int audit_enabled;
675 #else
676 #define audit_log(c,g,t,f,...) do { ; } while (0)
677 #define audit_log_start(c,g,t) ({ NULL; })
678 #define audit_log_vformat(b,f,a) do { ; } while (0)
679 #define audit_log_format(b,f,...) do { ; } while (0)
680 #define audit_log_end(b) do { ; } while (0)
681 #define audit_log_n_hex(a,b,l) do { ; } while (0)
682 #define audit_log_n_string(a,c,l) do { ; } while (0)
683 #define audit_log_string(a,c) do { ; } while (0)
684 #define audit_log_n_untrustedstring(a,n,s) do { ; } while (0)
685 #define audit_log_untrustedstring(a,s) do { ; } while (0)
686 #define audit_log_d_path(b, p, d) do { ; } while (0)
687 #define audit_log_key(b, k) do { ; } while (0)
688 #define audit_log_secctx(b,s) do { ; } while (0)
689 #define audit_enabled 0
690 #endif
691 #endif
692 #endif
Linux kernel - Deliverables
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