audit.h 26 KB

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  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. #ifndef _LINUX_AUDIT_H_
  24. #define _LINUX_AUDIT_H_
  25. #include <linux/types.h>
  26. #include <linux/elf-em.h>
  27. #include <linux/ptrace.h>
  28. /* The netlink messages for the audit system is divided into blocks:
  29. * 1000 - 1099 are for commanding the audit system
  30. * 1100 - 1199 user space trusted application messages
  31. * 1200 - 1299 messages internal to the audit daemon
  32. * 1300 - 1399 audit event messages
  33. * 1400 - 1499 SE Linux use
  34. * 1500 - 1599 kernel LSPP events
  35. * 1600 - 1699 kernel crypto events
  36. * 1700 - 1799 kernel anomaly records
  37. * 1800 - 1899 kernel integrity events
  38. * 1900 - 1999 future kernel use
  39. * 2000 is for otherwise unclassified kernel audit messages (legacy)
  40. * 2001 - 2099 unused (kernel)
  41. * 2100 - 2199 user space anomaly records
  42. * 2200 - 2299 user space actions taken in response to anomalies
  43. * 2300 - 2399 user space generated LSPP events
  44. * 2400 - 2499 user space crypto events
  45. * 2500 - 2999 future user space (maybe integrity labels and related events)
  46. *
  47. * Messages from 1000-1199 are bi-directional. 1200-1299 & 2100 - 2999 are
  48. * exclusively user space. 1300-2099 is kernel --> user space
  49. * communication.
  50. */
  51. #define AUDIT_GET 1000 /* Get status */
  52. #define AUDIT_SET 1001 /* Set status (enable/disable/auditd) */
  53. #define AUDIT_LIST 1002 /* List syscall rules -- deprecated */
  54. #define AUDIT_ADD 1003 /* Add syscall rule -- deprecated */
  55. #define AUDIT_DEL 1004 /* Delete syscall rule -- deprecated */
  56. #define AUDIT_USER 1005 /* Message from userspace -- deprecated */
  57. #define AUDIT_LOGIN 1006 /* Define the login id and information */
  58. #define AUDIT_WATCH_INS 1007 /* Insert file/dir watch entry */
  59. #define AUDIT_WATCH_REM 1008 /* Remove file/dir watch entry */
  60. #define AUDIT_WATCH_LIST 1009 /* List all file/dir watches */
  61. #define AUDIT_SIGNAL_INFO 1010 /* Get info about sender of signal to auditd */
  62. #define AUDIT_ADD_RULE 1011 /* Add syscall filtering rule */
  63. #define AUDIT_DEL_RULE 1012 /* Delete syscall filtering rule */
  64. #define AUDIT_LIST_RULES 1013 /* List syscall filtering rules */
  65. #define AUDIT_TRIM 1014 /* Trim junk from watched tree */
  66. #define AUDIT_MAKE_EQUIV 1015 /* Append to watched tree */
  67. #define AUDIT_TTY_GET 1016 /* Get TTY auditing status */
  68. #define AUDIT_TTY_SET 1017 /* Set TTY auditing status */
  69. #define AUDIT_FIRST_USER_MSG 1100 /* Userspace messages mostly uninteresting to kernel */
  70. #define AUDIT_USER_AVC 1107 /* We filter this differently */
  71. #define AUDIT_USER_TTY 1124 /* Non-ICANON TTY input meaning */
  72. #define AUDIT_LAST_USER_MSG 1199
  73. #define AUDIT_FIRST_USER_MSG2 2100 /* More user space messages */
  74. #define AUDIT_LAST_USER_MSG2 2999
  75. #define AUDIT_DAEMON_START 1200 /* Daemon startup record */
  76. #define AUDIT_DAEMON_END 1201 /* Daemon normal stop record */
  77. #define AUDIT_DAEMON_ABORT 1202 /* Daemon error stop record */
  78. #define AUDIT_DAEMON_CONFIG 1203 /* Daemon config change */
  79. #define AUDIT_SYSCALL 1300 /* Syscall event */
  80. /* #define AUDIT_FS_WATCH 1301 * Deprecated */
  81. #define AUDIT_PATH 1302 /* Filename path information */
  82. #define AUDIT_IPC 1303 /* IPC record */
  83. #define AUDIT_SOCKETCALL 1304 /* sys_socketcall arguments */
  84. #define AUDIT_CONFIG_CHANGE 1305 /* Audit system configuration change */
  85. #define AUDIT_SOCKADDR 1306 /* sockaddr copied as syscall arg */
  86. #define AUDIT_CWD 1307 /* Current working directory */
  87. #define AUDIT_EXECVE 1309 /* execve arguments */
  88. #define AUDIT_IPC_SET_PERM 1311 /* IPC new permissions record type */
  89. #define AUDIT_MQ_OPEN 1312 /* POSIX MQ open record type */
  90. #define AUDIT_MQ_SENDRECV 1313 /* POSIX MQ send/receive record type */
  91. #define AUDIT_MQ_NOTIFY 1314 /* POSIX MQ notify record type */
  92. #define AUDIT_MQ_GETSETATTR 1315 /* POSIX MQ get/set attribute record type */
  93. #define AUDIT_KERNEL_OTHER 1316 /* For use by 3rd party modules */
  94. #define AUDIT_FD_PAIR 1317 /* audit record for pipe/socketpair */
  95. #define AUDIT_OBJ_PID 1318 /* ptrace target */
  96. #define AUDIT_TTY 1319 /* Input on an administrative TTY */
  97. #define AUDIT_EOE 1320 /* End of multi-record event */
  98. #define AUDIT_BPRM_FCAPS 1321 /* Information about fcaps increasing perms */
  99. #define AUDIT_CAPSET 1322 /* Record showing argument to sys_capset */
  100. #define AUDIT_MMAP 1323 /* Record showing descriptor and flags in mmap */
  101. #define AUDIT_NETFILTER_PKT 1324 /* Packets traversing netfilter chains */
  102. #define AUDIT_NETFILTER_CFG 1325 /* Netfilter chain modifications */
  103. #define AUDIT_SECCOMP 1326 /* Secure Computing event */
  104. #define AUDIT_PROCTITLE 1327 /* Proctitle emit event */
  105. #define AUDIT_AVC 1400 /* SE Linux avc denial or grant */
  106. #define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */
  107. #define AUDIT_AVC_PATH 1402 /* dentry, vfsmount pair from avc */
  108. #define AUDIT_MAC_POLICY_LOAD 1403 /* Policy file load */
  109. #define AUDIT_MAC_STATUS 1404 /* Changed enforcing,permissive,off */
  110. #define AUDIT_MAC_CONFIG_CHANGE 1405 /* Changes to booleans */
  111. #define AUDIT_MAC_UNLBL_ALLOW 1406 /* NetLabel: allow unlabeled traffic */
  112. #define AUDIT_MAC_CIPSOV4_ADD 1407 /* NetLabel: add CIPSOv4 DOI entry */
  113. #define AUDIT_MAC_CIPSOV4_DEL 1408 /* NetLabel: del CIPSOv4 DOI entry */
  114. #define AUDIT_MAC_MAP_ADD 1409 /* NetLabel: add LSM domain mapping */
  115. #define AUDIT_MAC_MAP_DEL 1410 /* NetLabel: del LSM domain mapping */
  116. #define AUDIT_MAC_IPSEC_ADDSA 1411 /* Not used */
  117. #define AUDIT_MAC_IPSEC_DELSA 1412 /* Not used */
  118. #define AUDIT_MAC_IPSEC_ADDSPD 1413 /* Not used */
  119. #define AUDIT_MAC_IPSEC_DELSPD 1414 /* Not used */
  120. #define AUDIT_MAC_IPSEC_EVENT 1415 /* Audit an IPSec event */
  121. #define AUDIT_MAC_UNLBL_STCADD 1416 /* NetLabel: add a static label */
  122. #define AUDIT_MAC_UNLBL_STCDEL 1417 /* NetLabel: del a static label */
  123. #define AUDIT_FIRST_KERN_ANOM_MSG 1700
  124. #define AUDIT_LAST_KERN_ANOM_MSG 1799
  125. #define AUDIT_ANOM_PROMISCUOUS 1700 /* Device changed promiscuous mode */
  126. #define AUDIT_ANOM_ABEND 1701 /* Process ended abnormally */
  127. #define AUDIT_INTEGRITY_DATA 1800 /* Data integrity verification */
  128. #define AUDIT_INTEGRITY_METADATA 1801 /* Metadata integrity verification */
  129. #define AUDIT_INTEGRITY_STATUS 1802 /* Integrity enable status */
  130. #define AUDIT_INTEGRITY_HASH 1803 /* Integrity HASH type */
  131. #define AUDIT_INTEGRITY_PCR 1804 /* PCR invalidation msgs */
  132. #define AUDIT_INTEGRITY_RULE 1805 /* policy rule */
  133. #define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */
  134. /* Rule flags */
  135. #define AUDIT_FILTER_USER 0x00 /* Apply rule to user-generated messages */
  136. #define AUDIT_FILTER_TASK 0x01 /* Apply rule at task creation (not syscall) */
  137. #define AUDIT_FILTER_ENTRY 0x02 /* Apply rule at syscall entry */
  138. #define AUDIT_FILTER_WATCH 0x03 /* Apply rule to file system watches */
  139. #define AUDIT_FILTER_EXIT 0x04 /* Apply rule at syscall exit */
  140. #define AUDIT_FILTER_TYPE 0x05 /* Apply rule at audit_log_start */
  141. #define AUDIT_NR_FILTERS 6
  142. #define AUDIT_FILTER_PREPEND 0x10 /* Prepend to front of list */
  143. /* Rule actions */
  144. #define AUDIT_NEVER 0 /* Do not build context if rule matches */
  145. #define AUDIT_POSSIBLE 1 /* Build context if rule matches */
  146. #define AUDIT_ALWAYS 2 /* Generate audit record if rule matches */
  147. /* Rule structure sizes -- if these change, different AUDIT_ADD and
  148. * AUDIT_LIST commands must be implemented. */
  149. #define AUDIT_MAX_FIELDS 64
  150. #define AUDIT_MAX_KEY_LEN 256
  151. #define AUDIT_BITMASK_SIZE 64
  152. #define AUDIT_WORD(nr) ((__u32)((nr)/32))
  153. #define AUDIT_BIT(nr) (1 << ((nr) - AUDIT_WORD(nr)*32))
  154. #define AUDIT_SYSCALL_CLASSES 16
  155. #define AUDIT_CLASS_DIR_WRITE 0
  156. #define AUDIT_CLASS_DIR_WRITE_32 1
  157. #define AUDIT_CLASS_CHATTR 2
  158. #define AUDIT_CLASS_CHATTR_32 3
  159. #define AUDIT_CLASS_READ 4
  160. #define AUDIT_CLASS_READ_32 5
  161. #define AUDIT_CLASS_WRITE 6
  162. #define AUDIT_CLASS_WRITE_32 7
  163. #define AUDIT_CLASS_SIGNAL 8
  164. #define AUDIT_CLASS_SIGNAL_32 9
  165. /* This bitmask is used to validate user input. It represents all bits that
  166. * are currently used in an audit field constant understood by the kernel.
  167. * If you are adding a new #define AUDIT_<whatever>, please ensure that
  168. * AUDIT_UNUSED_BITS is updated if need be. */
  169. #define AUDIT_UNUSED_BITS 0x07FFFC00
  170. /* AUDIT_FIELD_COMPARE rule list */
  171. #define AUDIT_COMPARE_UID_TO_OBJ_UID 1
  172. #define AUDIT_COMPARE_GID_TO_OBJ_GID 2
  173. #define AUDIT_COMPARE_EUID_TO_OBJ_UID 3
  174. #define AUDIT_COMPARE_EGID_TO_OBJ_GID 4
  175. #define AUDIT_COMPARE_AUID_TO_OBJ_UID 5
  176. #define AUDIT_COMPARE_SUID_TO_OBJ_UID 6
  177. #define AUDIT_COMPARE_SGID_TO_OBJ_GID 7
  178. #define AUDIT_COMPARE_FSUID_TO_OBJ_UID 8
  179. #define AUDIT_COMPARE_FSGID_TO_OBJ_GID 9
  180. #define AUDIT_COMPARE_UID_TO_AUID 10
  181. #define AUDIT_COMPARE_UID_TO_EUID 11
  182. #define AUDIT_COMPARE_UID_TO_FSUID 12
  183. #define AUDIT_COMPARE_UID_TO_SUID 13
  184. #define AUDIT_COMPARE_AUID_TO_FSUID 14
  185. #define AUDIT_COMPARE_AUID_TO_SUID 15
  186. #define AUDIT_COMPARE_AUID_TO_EUID 16
  187. #define AUDIT_COMPARE_EUID_TO_SUID 17
  188. #define AUDIT_COMPARE_EUID_TO_FSUID 18
  189. #define AUDIT_COMPARE_SUID_TO_FSUID 19
  190. #define AUDIT_COMPARE_GID_TO_EGID 20
  191. #define AUDIT_COMPARE_GID_TO_FSGID 21
  192. #define AUDIT_COMPARE_GID_TO_SGID 22
  193. #define AUDIT_COMPARE_EGID_TO_FSGID 23
  194. #define AUDIT_COMPARE_EGID_TO_SGID 24
  195. #define AUDIT_COMPARE_SGID_TO_FSGID 25
  196. #define AUDIT_MAX_FIELD_COMPARE AUDIT_COMPARE_SGID_TO_FSGID
  197. /* Rule fields */
  198. /* These are useful when checking the
  199. * task structure at task creation time
  200. * (AUDIT_PER_TASK). */
  201. #define AUDIT_PID 0
  202. #define AUDIT_UID 1
  203. #define AUDIT_EUID 2
  204. #define AUDIT_SUID 3
  205. #define AUDIT_FSUID 4
  206. #define AUDIT_GID 5
  207. #define AUDIT_EGID 6
  208. #define AUDIT_SGID 7
  209. #define AUDIT_FSGID 8
  210. #define AUDIT_LOGINUID 9
  211. #define AUDIT_PERS 10
  212. #define AUDIT_ARCH 11
  213. #define AUDIT_MSGTYPE 12
  214. #define AUDIT_SUBJ_USER 13 /* security label user */
  215. #define AUDIT_SUBJ_ROLE 14 /* security label role */
  216. #define AUDIT_SUBJ_TYPE 15 /* security label type */
  217. #define AUDIT_SUBJ_SEN 16 /* security label sensitivity label */
  218. #define AUDIT_SUBJ_CLR 17 /* security label clearance label */
  219. #define AUDIT_PPID 18
  220. #define AUDIT_OBJ_USER 19
  221. #define AUDIT_OBJ_ROLE 20
  222. #define AUDIT_OBJ_TYPE 21
  223. #define AUDIT_OBJ_LEV_LOW 22
  224. #define AUDIT_OBJ_LEV_HIGH 23
  225. /* These are ONLY useful when checking
  226. * at syscall exit time (AUDIT_AT_EXIT). */
  227. #define AUDIT_DEVMAJOR 100
  228. #define AUDIT_DEVMINOR 101
  229. #define AUDIT_INODE 102
  230. #define AUDIT_EXIT 103
  231. #define AUDIT_SUCCESS 104 /* exit >= 0; value ignored */
  232. #define AUDIT_WATCH 105
  233. #define AUDIT_PERM 106
  234. #define AUDIT_DIR 107
  235. #define AUDIT_FILETYPE 108
  236. #define AUDIT_OBJ_UID 109
  237. #define AUDIT_OBJ_GID 110
  238. #define AUDIT_FIELD_COMPARE 111
  239. #define AUDIT_ARG0 200
  240. #define AUDIT_ARG1 (AUDIT_ARG0+1)
  241. #define AUDIT_ARG2 (AUDIT_ARG0+2)
  242. #define AUDIT_ARG3 (AUDIT_ARG0+3)
  243. #define AUDIT_FILTERKEY 210
  244. #define AUDIT_NEGATE 0x80000000
  245. /* These are the supported operators.
  246. * 4 2 1 8
  247. * = > < ?
  248. * ----------
  249. * 0 0 0 0 00 nonsense
  250. * 0 0 0 1 08 & bit mask
  251. * 0 0 1 0 10 <
  252. * 0 1 0 0 20 >
  253. * 0 1 1 0 30 !=
  254. * 1 0 0 0 40 =
  255. * 1 0 0 1 48 &= bit test
  256. * 1 0 1 0 50 <=
  257. * 1 1 0 0 60 >=
  258. * 1 1 1 1 78 all operators
  259. */
  260. #define AUDIT_BIT_MASK 0x08000000
  261. #define AUDIT_LESS_THAN 0x10000000
  262. #define AUDIT_GREATER_THAN 0x20000000
  263. #define AUDIT_NOT_EQUAL 0x30000000
  264. #define AUDIT_EQUAL 0x40000000
  265. #define AUDIT_BIT_TEST (AUDIT_BIT_MASK|AUDIT_EQUAL)
  266. #define AUDIT_LESS_THAN_OR_EQUAL (AUDIT_LESS_THAN|AUDIT_EQUAL)
  267. #define AUDIT_GREATER_THAN_OR_EQUAL (AUDIT_GREATER_THAN|AUDIT_EQUAL)
  268. #define AUDIT_OPERATORS (AUDIT_EQUAL|AUDIT_NOT_EQUAL|AUDIT_BIT_MASK)
  269. enum {
  270. Audit_equal,
  271. Audit_not_equal,
  272. Audit_bitmask,
  273. Audit_bittest,
  274. Audit_lt,
  275. Audit_gt,
  276. Audit_le,
  277. Audit_ge,
  278. Audit_bad
  279. };
  280. /* Status symbols */
  281. /* Mask values */
  282. #define AUDIT_STATUS_ENABLED 0x0001
  283. #define AUDIT_STATUS_FAILURE 0x0002
  284. #define AUDIT_STATUS_PID 0x0004
  285. #define AUDIT_STATUS_RATE_LIMIT 0x0008
  286. #define AUDIT_STATUS_BACKLOG_LIMIT 0x0010
  287. /* Failure-to-log actions */
  288. #define AUDIT_FAIL_SILENT 0
  289. #define AUDIT_FAIL_PRINTK 1
  290. #define AUDIT_FAIL_PANIC 2
  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. #define AUDIT_PERM_EXEC 1
  322. #define AUDIT_PERM_WRITE 2
  323. #define AUDIT_PERM_READ 4
  324. #define AUDIT_PERM_ATTR 8
  325. struct audit_status {
  326. __u32 mask; /* Bit mask for valid entries */
  327. __u32 enabled; /* 1 = enabled, 0 = disabled */
  328. __u32 failure; /* Failure-to-log action */
  329. __u32 pid; /* pid of auditd process */
  330. __u32 rate_limit; /* messages rate limit (per second) */
  331. __u32 backlog_limit; /* waiting messages limit */
  332. __u32 lost; /* messages lost */
  333. __u32 backlog; /* messages waiting in queue */
  334. };
  335. struct audit_tty_status {
  336. __u32 enabled; /* 1 = enabled, 0 = disabled */
  337. };
  338. /* audit_rule_data supports filter rules with both integer and string
  339. * fields. It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
  340. * AUDIT_LIST_RULES requests.
  341. */
  342. struct audit_rule_data {
  343. __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
  344. __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
  345. __u32 field_count;
  346. __u32 mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */
  347. __u32 fields[AUDIT_MAX_FIELDS];
  348. __u32 values[AUDIT_MAX_FIELDS];
  349. __u32 fieldflags[AUDIT_MAX_FIELDS];
  350. __u32 buflen; /* total length of string fields */
  351. char buf[0]; /* string fields buffer */
  352. };
  353. /* audit_rule is supported to maintain backward compatibility with
  354. * userspace. It supports integer fields only and corresponds to
  355. * AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests.
  356. */
  357. struct audit_rule { /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
  358. __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
  359. __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
  360. __u32 field_count;
  361. __u32 mask[AUDIT_BITMASK_SIZE];
  362. __u32 fields[AUDIT_MAX_FIELDS];
  363. __u32 values[AUDIT_MAX_FIELDS];
  364. };
  365. #ifdef __KERNEL__
  366. #include <linux/sched.h>
  367. struct audit_sig_info {
  368. uid_t uid;
  369. pid_t pid;
  370. char ctx[0];
  371. };
  372. struct audit_buffer;
  373. struct audit_context;
  374. struct inode;
  375. struct netlink_skb_parms;
  376. struct path;
  377. struct linux_binprm;
  378. struct mq_attr;
  379. struct mqstat;
  380. struct audit_watch;
  381. struct audit_tree;
  382. struct audit_krule {
  383. int vers_ops;
  384. u32 flags;
  385. u32 listnr;
  386. u32 action;
  387. u32 mask[AUDIT_BITMASK_SIZE];
  388. u32 buflen; /* for data alloc on list rules */
  389. u32 field_count;
  390. char *filterkey; /* ties events to rules */
  391. struct audit_field *fields;
  392. struct audit_field *arch_f; /* quick access to arch field */
  393. struct audit_field *inode_f; /* quick access to an inode field */
  394. struct audit_watch *watch; /* associated watch */
  395. struct audit_tree *tree; /* associated watched tree */
  396. struct list_head rlist; /* entry in audit_{watch,tree}.rules list */
  397. struct list_head list; /* for AUDIT_LIST* purposes only */
  398. u64 prio;
  399. };
  400. struct audit_field {
  401. u32 type;
  402. u32 val;
  403. u32 op;
  404. char *lsm_str;
  405. void *lsm_rule;
  406. };
  407. extern int __init audit_register_class(int class, unsigned *list);
  408. extern int audit_classify_syscall(int abi, unsigned syscall);
  409. extern int audit_classify_arch(int arch);
  410. #ifdef CONFIG_AUDITSYSCALL
  411. /* These are defined in auditsc.c */
  412. /* Public API */
  413. extern int audit_alloc(struct task_struct *task);
  414. extern void __audit_free(struct task_struct *task);
  415. extern void __audit_syscall_entry(int arch,
  416. int major, unsigned long a0, unsigned long a1,
  417. unsigned long a2, unsigned long a3);
  418. extern void __audit_syscall_exit(int ret_success, long ret_value);
  419. extern void __audit_getname(const char *name);
  420. extern void audit_putname(const char *name);
  421. extern void __audit_inode(const char *name, const struct dentry *dentry);
  422. extern void __audit_inode_child(const struct dentry *dentry,
  423. const struct inode *parent);
  424. extern void __audit_seccomp(unsigned long syscall, long signr, int code);
  425. extern void __audit_ptrace(struct task_struct *t);
  426. static inline int audit_dummy_context(void)
  427. {
  428. void *p = current->audit_context;
  429. return !p || *(int *)p;
  430. }
  431. static inline void audit_free(struct task_struct *task)
  432. {
  433. if (unlikely(task->audit_context))
  434. __audit_free(task);
  435. }
  436. static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
  437. unsigned long a1, unsigned long a2,
  438. unsigned long a3)
  439. {
  440. if (unlikely(current->audit_context))
  441. __audit_syscall_entry(arch, major, a0, a1, a2, a3);
  442. }
  443. static inline void audit_syscall_exit(void *pt_regs)
  444. {
  445. if (unlikely(current->audit_context)) {
  446. int success = is_syscall_success(pt_regs);
  447. long return_code = regs_return_value(pt_regs);
  448. __audit_syscall_exit(success, return_code);
  449. }
  450. }
  451. static inline void audit_getname(const char *name)
  452. {
  453. if (unlikely(!audit_dummy_context()))
  454. __audit_getname(name);
  455. }
  456. static inline void audit_inode(const char *name, const struct dentry *dentry) {
  457. if (unlikely(!audit_dummy_context()))
  458. __audit_inode(name, dentry);
  459. }
  460. static inline void audit_inode_child(const struct dentry *dentry,
  461. const struct inode *parent) {
  462. if (unlikely(!audit_dummy_context()))
  463. __audit_inode_child(dentry, parent);
  464. }
  465. void audit_core_dumps(long signr);
  466. static inline void audit_seccomp(unsigned long syscall, long signr, int code)
  467. {
  468. if (unlikely(!audit_dummy_context()))
  469. __audit_seccomp(syscall, signr, code);
  470. }
  471. static inline void audit_ptrace(struct task_struct *t)
  472. {
  473. if (unlikely(!audit_dummy_context()))
  474. __audit_ptrace(t);
  475. }
  476. /* Private API (for audit.c only) */
  477. extern unsigned int audit_serial(void);
  478. extern int auditsc_get_stamp(struct audit_context *ctx,
  479. struct timespec *t, unsigned int *serial);
  480. extern int audit_set_loginuid(uid_t loginuid);
  481. #define audit_get_loginuid(t) ((t)->loginuid)
  482. #define audit_get_sessionid(t) ((t)->sessionid)
  483. extern void audit_log_task_context(struct audit_buffer *ab);
  484. extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
  485. extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
  486. extern int __audit_bprm(struct linux_binprm *bprm);
  487. extern void __audit_socketcall(int nargs, unsigned long *args);
  488. extern int __audit_sockaddr(int len, void *addr);
  489. extern void __audit_fd_pair(int fd1, int fd2);
  490. extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
  491. extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
  492. extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
  493. extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
  494. extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
  495. const struct cred *new,
  496. const struct cred *old);
  497. extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
  498. extern void __audit_mmap_fd(int fd, int flags);
  499. static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
  500. {
  501. if (unlikely(!audit_dummy_context()))
  502. __audit_ipc_obj(ipcp);
  503. }
  504. static inline void audit_fd_pair(int fd1, int fd2)
  505. {
  506. if (unlikely(!audit_dummy_context()))
  507. __audit_fd_pair(fd1, fd2);
  508. }
  509. static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
  510. {
  511. if (unlikely(!audit_dummy_context()))
  512. __audit_ipc_set_perm(qbytes, uid, gid, mode);
  513. }
  514. static inline int audit_bprm(struct linux_binprm *bprm)
  515. {
  516. if (unlikely(!audit_dummy_context()))
  517. return __audit_bprm(bprm);
  518. return 0;
  519. }
  520. static inline void audit_socketcall(int nargs, unsigned long *args)
  521. {
  522. if (unlikely(!audit_dummy_context()))
  523. __audit_socketcall(nargs, args);
  524. }
  525. static inline int audit_sockaddr(int len, void *addr)
  526. {
  527. if (unlikely(!audit_dummy_context()))
  528. return __audit_sockaddr(len, addr);
  529. return 0;
  530. }
  531. static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
  532. {
  533. if (unlikely(!audit_dummy_context()))
  534. __audit_mq_open(oflag, mode, attr);
  535. }
  536. static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
  537. {
  538. if (unlikely(!audit_dummy_context()))
  539. __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
  540. }
  541. static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
  542. {
  543. if (unlikely(!audit_dummy_context()))
  544. __audit_mq_notify(mqdes, notification);
  545. }
  546. static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
  547. {
  548. if (unlikely(!audit_dummy_context()))
  549. __audit_mq_getsetattr(mqdes, mqstat);
  550. }
  551. static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
  552. const struct cred *new,
  553. const struct cred *old)
  554. {
  555. if (unlikely(!audit_dummy_context()))
  556. return __audit_log_bprm_fcaps(bprm, new, old);
  557. return 0;
  558. }
  559. static inline void audit_log_capset(pid_t pid, const struct cred *new,
  560. const struct cred *old)
  561. {
  562. if (unlikely(!audit_dummy_context()))
  563. __audit_log_capset(pid, new, old);
  564. }
  565. static inline void audit_mmap_fd(int fd, int flags)
  566. {
  567. if (unlikely(!audit_dummy_context()))
  568. __audit_mmap_fd(fd, flags);
  569. }
  570. extern int audit_n_rules;
  571. extern int audit_signals;
  572. #else /* CONFIG_AUDITSYSCALL */
  573. #define audit_alloc(t) ({ 0; })
  574. #define audit_free(t) do { ; } while (0)
  575. #define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
  576. #define audit_syscall_exit(r) do { ; } while (0)
  577. #define audit_dummy_context() 1
  578. #define audit_getname(n) do { ; } while (0)
  579. #define audit_putname(n) do { ; } while (0)
  580. #define __audit_inode(n,d) do { ; } while (0)
  581. #define __audit_inode_child(i,p) do { ; } while (0)
  582. #define audit_inode(n,d) do { (void)(d); } while (0)
  583. #define audit_inode_child(i,p) do { ; } while (0)
  584. #define audit_core_dumps(i) do { ; } while (0)
  585. #define audit_seccomp(i,s,c) do { ; } while (0)
  586. #define auditsc_get_stamp(c,t,s) (0)
  587. #define audit_get_loginuid(t) (-1)
  588. #define audit_get_sessionid(t) (-1)
  589. #define audit_log_task_context(b) do { ; } while (0)
  590. #define audit_ipc_obj(i) ((void)0)
  591. #define audit_ipc_set_perm(q,u,g,m) ((void)0)
  592. #define audit_bprm(p) ({ 0; })
  593. #define audit_socketcall(n,a) ((void)0)
  594. #define audit_fd_pair(n,a) ((void)0)
  595. #define audit_sockaddr(len, addr) ({ 0; })
  596. #define audit_mq_open(o,m,a) ((void)0)
  597. #define audit_mq_sendrecv(d,l,p,t) ((void)0)
  598. #define audit_mq_notify(d,n) ((void)0)
  599. #define audit_mq_getsetattr(d,s) ((void)0)
  600. #define audit_log_bprm_fcaps(b, ncr, ocr) ({ 0; })
  601. #define audit_log_capset(pid, ncr, ocr) ((void)0)
  602. #define audit_mmap_fd(fd, flags) ((void)0)
  603. #define audit_ptrace(t) ((void)0)
  604. #define audit_n_rules 0
  605. #define audit_signals 0
  606. #endif /* CONFIG_AUDITSYSCALL */
  607. #ifdef CONFIG_AUDIT
  608. /* These are defined in audit.c */
  609. /* Public API */
  610. extern __printf(4, 5)
  611. void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
  612. const char *fmt, ...);
  613. extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
  614. extern __printf(2, 3)
  615. void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
  616. extern void audit_log_end(struct audit_buffer *ab);
  617. extern int audit_string_contains_control(const char *string,
  618. size_t len);
  619. extern void audit_log_n_hex(struct audit_buffer *ab,
  620. const unsigned char *buf,
  621. size_t len);
  622. extern void audit_log_n_string(struct audit_buffer *ab,
  623. const char *buf,
  624. size_t n);
  625. #define audit_log_string(a,b) audit_log_n_string(a, b, strlen(b));
  626. extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
  627. const char *string,
  628. size_t n);
  629. extern void audit_log_untrustedstring(struct audit_buffer *ab,
  630. const char *string);
  631. extern void audit_log_d_path(struct audit_buffer *ab,
  632. const char *prefix,
  633. const struct path *path);
  634. extern void audit_log_key(struct audit_buffer *ab,
  635. char *key);
  636. extern void audit_log_lost(const char *message);
  637. #ifdef CONFIG_SECURITY
  638. extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
  639. #else
  640. #define audit_log_secctx(b,s) do { ; } while (0)
  641. #endif
  642. extern int audit_update_lsm_rules(void);
  643. /* Private API (for audit.c only) */
  644. extern int audit_filter_user(struct netlink_skb_parms *cb);
  645. extern int audit_filter_type(int type);
  646. extern int audit_receive_filter(int type, int pid, int uid, int seq,
  647. void *data, size_t datasz, uid_t loginuid,
  648. u32 sessionid, u32 sid);
  649. extern int audit_enabled;
  650. #else
  651. #define audit_log(c,g,t,f,...) do { ; } while (0)
  652. #define audit_log_start(c,g,t) ({ NULL; })
  653. #define audit_log_vformat(b,f,a) do { ; } while (0)
  654. #define audit_log_format(b,f,...) do { ; } while (0)
  655. #define audit_log_end(b) do { ; } while (0)
  656. #define audit_log_n_hex(a,b,l) do { ; } while (0)
  657. #define audit_log_n_string(a,c,l) do { ; } while (0)
  658. #define audit_log_string(a,c) do { ; } while (0)
  659. #define audit_log_n_untrustedstring(a,n,s) do { ; } while (0)
  660. #define audit_log_untrustedstring(a,s) do { ; } while (0)
  661. #define audit_log_d_path(b, p, d) do { ; } while (0)
  662. #define audit_log_key(b, k) do { ; } while (0)
  663. #define audit_log_secctx(b,s) do { ; } while (0)
  664. #define audit_enabled 0
  665. #endif
  666. #endif
  667. #endif