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