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 <[email protected]> 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_ANOM_LINK 1702 /* Suspicious use of file links */ 134 #define AUDIT_INTEGRITY_DATA 1800 /* Data integrity verification */ 135 #define AUDIT_INTEGRITY_METADATA 1801 /* Metadata integrity verification */ 136 #define AUDIT_INTEGRITY_STATUS 1802 /* Integrity enable status */ 137 #define AUDIT_INTEGRITY_HASH 1803 /* Integrity HASH type */ 138 #define AUDIT_INTEGRITY_PCR 1804 /* PCR invalidation msgs */ 139 #define AUDIT_INTEGRITY_RULE 1805 /* policy rule */ 140 141 #define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */ 142 143 /* Rule flags */ 144 #define AUDIT_FILTER_USER 0x00 /* Apply rule to user-generated messages */ 145 #define AUDIT_FILTER_TASK 0x01 /* Apply rule at task creation (not syscall) */ 146 #define AUDIT_FILTER_ENTRY 0x02 /* Apply rule at syscall entry */ 147 #define AUDIT_FILTER_WATCH 0x03 /* Apply rule to file system watches */ 148 #define AUDIT_FILTER_EXIT 0x04 /* Apply rule at syscall exit */ 149 #define AUDIT_FILTER_TYPE 0x05 /* Apply rule at audit_log_start */ 150 151 #define AUDIT_NR_FILTERS 6 152 153 #define AUDIT_FILTER_PREPEND 0x10 /* Prepend to front of list */ 154 155 /* Rule actions */ 156 #define AUDIT_NEVER 0 /* Do not build context if rule matches */ 157 #define AUDIT_POSSIBLE 1 /* Build context if rule matches */ 158 #define AUDIT_ALWAYS 2 /* Generate audit record if rule matches */ 159 160 /* Rule structure sizes -- if these change, different AUDIT_ADD and 161 * AUDIT_LIST commands must be implemented. */ 162 #define AUDIT_MAX_FIELDS 64 163 #define AUDIT_MAX_KEY_LEN 256 164 #define AUDIT_BITMASK_SIZE 64 165 #define AUDIT_WORD(nr) ((__u32)((nr)/32)) 166 #define AUDIT_BIT(nr) (1 << ((nr) - AUDIT_WORD(nr)*32)) 167 168 #define AUDIT_SYSCALL_CLASSES 16 169 #define AUDIT_CLASS_DIR_WRITE 0 170 #define AUDIT_CLASS_DIR_WRITE_32 1 171 #define AUDIT_CLASS_CHATTR 2 172 #define AUDIT_CLASS_CHATTR_32 3 173 #define AUDIT_CLASS_READ 4 174 #define AUDIT_CLASS_READ_32 5 175 #define AUDIT_CLASS_WRITE 6 176 #define AUDIT_CLASS_WRITE_32 7 177 #define AUDIT_CLASS_SIGNAL 8 178 #define AUDIT_CLASS_SIGNAL_32 9 179 180 /* This bitmask is used to validate user input. It represents all bits that 181 * are currently used in an audit field constant understood by the kernel. 182 * If you are adding a new #define AUDIT_<whatever>, please ensure that 183 * AUDIT_UNUSED_BITS is updated if need be. */ 184 #define AUDIT_UNUSED_BITS 0x07FFFC00 185 186 /* AUDIT_FIELD_COMPARE rule list */ 187 #define AUDIT_COMPARE_UID_TO_OBJ_UID 1 188 #define AUDIT_COMPARE_GID_TO_OBJ_GID 2 189 #define AUDIT_COMPARE_EUID_TO_OBJ_UID 3 190 #define AUDIT_COMPARE_EGID_TO_OBJ_GID 4 191 #define AUDIT_COMPARE_AUID_TO_OBJ_UID 5 192 #define AUDIT_COMPARE_SUID_TO_OBJ_UID 6 193 #define AUDIT_COMPARE_SGID_TO_OBJ_GID 7 194 #define AUDIT_COMPARE_FSUID_TO_OBJ_UID 8 195 #define AUDIT_COMPARE_FSGID_TO_OBJ_GID 9 196 197 #define AUDIT_COMPARE_UID_TO_AUID 10 198 #define AUDIT_COMPARE_UID_TO_EUID 11 199 #define AUDIT_COMPARE_UID_TO_FSUID 12 200 #define AUDIT_COMPARE_UID_TO_SUID 13 201 202 #define AUDIT_COMPARE_AUID_TO_FSUID 14 203 #define AUDIT_COMPARE_AUID_TO_SUID 15 204 #define AUDIT_COMPARE_AUID_TO_EUID 16 205 206 #define AUDIT_COMPARE_EUID_TO_SUID 17 207 #define AUDIT_COMPARE_EUID_TO_FSUID 18 208 209 #define AUDIT_COMPARE_SUID_TO_FSUID 19 210 211 #define AUDIT_COMPARE_GID_TO_EGID 20 212 #define AUDIT_COMPARE_GID_TO_FSGID 21 213 #define AUDIT_COMPARE_GID_TO_SGID 22 214 215 #define AUDIT_COMPARE_EGID_TO_FSGID 23 216 #define AUDIT_COMPARE_EGID_TO_SGID 24 217 #define AUDIT_COMPARE_SGID_TO_FSGID 25 218 219 #define AUDIT_MAX_FIELD_COMPARE AUDIT_COMPARE_SGID_TO_FSGID 220 221 /* Rule fields */ 222 /* These are useful when checking the 223 * task structure at task creation time 224 * (AUDIT_PER_TASK). */ 225 #define AUDIT_PID 0 226 #define AUDIT_UID 1 227 #define AUDIT_EUID 2 228 #define AUDIT_SUID 3 229 #define AUDIT_FSUID 4 230 #define AUDIT_GID 5 231 #define AUDIT_EGID 6 232 #define AUDIT_SGID 7 233 #define AUDIT_FSGID 8 234 #define AUDIT_LOGINUID 9 235 #define AUDIT_PERS 10 236 #define AUDIT_ARCH 11 237 #define AUDIT_MSGTYPE 12 238 #define AUDIT_SUBJ_USER 13 /* security label user */ 239 #define AUDIT_SUBJ_ROLE 14 /* security label role */ 240 #define AUDIT_SUBJ_TYPE 15 /* security label type */ 241 #define AUDIT_SUBJ_SEN 16 /* security label sensitivity label */ 242 #define AUDIT_SUBJ_CLR 17 /* security label clearance label */ 243 #define AUDIT_PPID 18 244 #define AUDIT_OBJ_USER 19 245 #define AUDIT_OBJ_ROLE 20 246 #define AUDIT_OBJ_TYPE 21 247 #define AUDIT_OBJ_LEV_LOW 22 248 #define AUDIT_OBJ_LEV_HIGH 23 249 250 /* These are ONLY useful when checking 251 * at syscall exit time (AUDIT_AT_EXIT). */ 252 #define AUDIT_DEVMAJOR 100 253 #define AUDIT_DEVMINOR 101 254 #define AUDIT_INODE 102 255 #define AUDIT_EXIT 103 256 #define AUDIT_SUCCESS 104 /* exit >= 0; value ignored */ 257 #define AUDIT_WATCH 105 258 #define AUDIT_PERM 106 259 #define AUDIT_DIR 107 260 #define AUDIT_FILETYPE 108 261 #define AUDIT_OBJ_UID 109 262 #define AUDIT_OBJ_GID 110 263 #define AUDIT_FIELD_COMPARE 111 264 265 #define AUDIT_ARG0 200 266 #define AUDIT_ARG1 (AUDIT_ARG0+1) 267 #define AUDIT_ARG2 (AUDIT_ARG0+2) 268 #define AUDIT_ARG3 (AUDIT_ARG0+3) 269 270 #define AUDIT_FILTERKEY 210 271 272 #define AUDIT_NEGATE 0x80000000 273 274 /* These are the supported operators. 275 * 4 2 1 8 276 * = > < ? 277 * ---------- 278 * 0 0 0 0 00 nonsense 279 * 0 0 0 1 08 & bit mask 280 * 0 0 1 0 10 < 281 * 0 1 0 0 20 > 282 * 0 1 1 0 30 != 283 * 1 0 0 0 40 = 284 * 1 0 0 1 48 &= bit test 285 * 1 0 1 0 50 <= 286 * 1 1 0 0 60 >= 287 * 1 1 1 1 78 all operators 288 */ 289 #define AUDIT_BIT_MASK 0x08000000 290 #define AUDIT_LESS_THAN 0x10000000 291 #define AUDIT_GREATER_THAN 0x20000000 292 #define AUDIT_NOT_EQUAL 0x30000000 293 #define AUDIT_EQUAL 0x40000000 294 #define AUDIT_BIT_TEST (AUDIT_BIT_MASK|AUDIT_EQUAL) 295 #define AUDIT_LESS_THAN_OR_EQUAL (AUDIT_LESS_THAN|AUDIT_EQUAL) 296 #define AUDIT_GREATER_THAN_OR_EQUAL (AUDIT_GREATER_THAN|AUDIT_EQUAL) 297 #define AUDIT_OPERATORS (AUDIT_EQUAL|AUDIT_NOT_EQUAL|AUDIT_BIT_MASK) 298 299 enum { 300 Audit_equal, 301 Audit_not_equal, 302 Audit_bitmask, 303 Audit_bittest, 304 Audit_lt, 305 Audit_gt, 306 Audit_le, 307 Audit_ge, 308 Audit_bad 309 }; 310 311 /* Status symbols */ 312 /* Mask values */ 313 #define AUDIT_STATUS_ENABLED 0x0001 314 #define AUDIT_STATUS_FAILURE 0x0002 315 #define AUDIT_STATUS_PID 0x0004 316 #define AUDIT_STATUS_RATE_LIMIT 0x0008 317 #define AUDIT_STATUS_BACKLOG_LIMIT 0x0010 318 /* Failure-to-log actions */ 319 #define AUDIT_FAIL_SILENT 0 320 #define AUDIT_FAIL_PRINTK 1 321 #define AUDIT_FAIL_PANIC 2 322 323 /* distinguish syscall tables */ 324 #define __AUDIT_ARCH_64BIT 0x80000000 325 #define __AUDIT_ARCH_LE 0x40000000 326 #define AUDIT_ARCH_ALPHA (EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) 327 #define AUDIT_ARCH_ARM (EM_ARM|__AUDIT_ARCH_LE) 328 #define AUDIT_ARCH_ARMEB (EM_ARM) 329 #define AUDIT_ARCH_CRIS (EM_CRIS|__AUDIT_ARCH_LE) 330 #define AUDIT_ARCH_FRV (EM_FRV) 331 #define AUDIT_ARCH_H8300 (EM_H8_300) 332 #define AUDIT_ARCH_I386 (EM_386|__AUDIT_ARCH_LE) 333 #define AUDIT_ARCH_IA64 (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) 334 #define AUDIT_ARCH_M32R (EM_M32R) 335 #define AUDIT_ARCH_M68K (EM_68K) 336 #define AUDIT_ARCH_MIPS (EM_MIPS) 337 #define AUDIT_ARCH_MIPSEL (EM_MIPS|__AUDIT_ARCH_LE) 338 #define AUDIT_ARCH_MIPS64 (EM_MIPS|__AUDIT_ARCH_64BIT) 339 #define AUDIT_ARCH_MIPSEL64 (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) 340 #define AUDIT_ARCH_PARISC (EM_PARISC) 341 #define AUDIT_ARCH_PARISC64 (EM_PARISC|__AUDIT_ARCH_64BIT) 342 #define AUDIT_ARCH_PPC (EM_PPC) 343 #define AUDIT_ARCH_PPC64 (EM_PPC64|__AUDIT_ARCH_64BIT) 344 #define AUDIT_ARCH_S390 (EM_S390) 345 #define AUDIT_ARCH_S390X (EM_S390|__AUDIT_ARCH_64BIT) 346 #define AUDIT_ARCH_SH (EM_SH) 347 #define AUDIT_ARCH_SHEL (EM_SH|__AUDIT_ARCH_LE) 348 #define AUDIT_ARCH_SH64 (EM_SH|__AUDIT_ARCH_64BIT) 349 #define AUDIT_ARCH_SHEL64 (EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) 350 #define AUDIT_ARCH_SPARC (EM_SPARC) 351 #define AUDIT_ARCH_SPARC64 (EM_SPARCV9|__AUDIT_ARCH_64BIT) 352 #define AUDIT_ARCH_X86_64 (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) 353 354 #define AUDIT_PERM_EXEC 1 355 #define AUDIT_PERM_WRITE 2 356 #define AUDIT_PERM_READ 4 357 #define AUDIT_PERM_ATTR 8 358 359 struct audit_status { 360 __u32 mask; /* Bit mask for valid entries */ 361 __u32 enabled; /* 1 = enabled, 0 = disabled */ 362 __u32 failure; /* Failure-to-log action */ 363 __u32 pid; /* pid of auditd process */ 364 __u32 rate_limit; /* messages rate limit (per second) */ 365 __u32 backlog_limit; /* waiting messages limit */ 366 __u32 lost; /* messages lost */ 367 __u32 backlog; /* messages waiting in queue */ 368 }; 369 370 struct audit_tty_status { 371 __u32 enabled; /* 1 = enabled, 0 = disabled */ 372 }; 373 374 /* audit_rule_data supports filter rules with both integer and string 375 * fields. It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and 376 * AUDIT_LIST_RULES requests. 377 */ 378 struct audit_rule_data { 379 __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */ 380 __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */ 381 __u32 field_count; 382 __u32 mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */ 383 __u32 fields[AUDIT_MAX_FIELDS]; 384 __u32 values[AUDIT_MAX_FIELDS]; 385 __u32 fieldflags[AUDIT_MAX_FIELDS]; 386 __u32 buflen; /* total length of string fields */ 387 char buf[0]; /* string fields buffer */ 388 }; 389 390 /* audit_rule is supported to maintain backward compatibility with 391 * userspace. It supports integer fields only and corresponds to 392 * AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests. 393 */ 394 struct audit_rule { /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */ 395 __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */ 396 __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */ 397 __u32 field_count; 398 __u32 mask[AUDIT_BITMASK_SIZE]; 399 __u32 fields[AUDIT_MAX_FIELDS]; 400 __u32 values[AUDIT_MAX_FIELDS]; 401 }; 402 403 #ifdef __KERNEL__ 404 #include <linux/sched.h> 405 406 struct audit_sig_info { 407 uid_t uid; 408 pid_t pid; 409 char ctx[0]; 410 }; 411 412 struct audit_buffer; 413 struct audit_context; 414 struct inode; 415 struct netlink_skb_parms; 416 struct path; 417 struct linux_binprm; 418 struct mq_attr; 419 struct mqstat; 420 struct audit_watch; 421 struct audit_tree; 422 423 struct audit_krule { 424 int vers_ops; 425 u32 flags; 426 u32 listnr; 427 u32 action; 428 u32 mask[AUDIT_BITMASK_SIZE]; 429 u32 buflen; /* for data alloc on list rules */ 430 u32 field_count; 431 char *filterkey; /* ties events to rules */ 432 struct audit_field *fields; 433 struct audit_field *arch_f; /* quick access to arch field */ 434 struct audit_field *inode_f; /* quick access to an inode field */ 435 struct audit_watch *watch; /* associated watch */ 436 struct audit_tree *tree; /* associated watched tree */ 437 struct list_head rlist; /* entry in audit_{watch,tree}.rules list */ 438 struct list_head list; /* for AUDIT_LIST* purposes only */ 439 u64 prio; 440 }; 441 442 struct audit_field { 443 u32 type; 444 u32 val; 445 u32 op; 446 char *lsm_str; 447 void *lsm_rule; 448 }; 449 450 extern int __init audit_register_class(int class, unsigned *list); 451 extern int audit_classify_syscall(int abi, unsigned syscall); 452 extern int audit_classify_arch(int arch); 453 #ifdef CONFIG_AUDITSYSCALL 454 /* These are defined in auditsc.c */ 455 /* Public API */ 456 extern int audit_alloc(struct task_struct *task); 457 extern void __audit_free(struct task_struct *task); 458 extern void __audit_syscall_entry(int arch, 459 int major, unsigned long a0, unsigned long a1, 460 unsigned long a2, unsigned long a3); 461 extern void __audit_syscall_exit(int ret_success, long ret_value); 462 extern void __audit_getname(const char *name); 463 extern void audit_putname(const char *name); 464 extern void __audit_inode(const char *name, const struct dentry *dentry); 465 extern void __audit_inode_child(const struct dentry *dentry, 466 const struct inode *parent); 467 extern void __audit_seccomp(unsigned long syscall, long signr, int code); 468 extern void __audit_ptrace(struct task_struct *t); 469 470 static inline int audit_dummy_context(void) 471 { 472 void *p = current->audit_context; 473 return !p || *(int *)p; 474 } 475 static inline void audit_free(struct task_struct *task) 476 { 477 if (unlikely(task->audit_context)) 478 __audit_free(task); 479 } 480 static inline void audit_syscall_entry(int arch, int major, unsigned long a0, 481 unsigned long a1, unsigned long a2, 482 unsigned long a3) 483 { 484 if (unlikely(!audit_dummy_context())) 485 __audit_syscall_entry(arch, major, a0, a1, a2, a3); 486 } 487 static inline void audit_syscall_exit(void *pt_regs) 488 { 489 if (unlikely(current->audit_context)) { 490 int success = is_syscall_success(pt_regs); 491 int return_code = regs_return_value(pt_regs); 492 493 __audit_syscall_exit(success, return_code); 494 } 495 } 496 static inline void audit_getname(const char *name) 497 { 498 if (unlikely(!audit_dummy_context())) 499 __audit_getname(name); 500 } 501 static inline void audit_inode(const char *name, const struct dentry *dentry) { 502 if (unlikely(!audit_dummy_context())) 503 __audit_inode(name, dentry); 504 } 505 static inline void audit_inode_child(const struct dentry *dentry, 506 const struct inode *parent) { 507 if (unlikely(!audit_dummy_context())) 508 __audit_inode_child(dentry, parent); 509 } 510 void audit_core_dumps(long signr); 511 512 static inline void audit_seccomp(unsigned long syscall, long signr, int code) 513 { 514 if (unlikely(!audit_dummy_context())) 515 __audit_seccomp(syscall, signr, code); 516 } 517 518 static inline void audit_ptrace(struct task_struct *t) 519 { 520 if (unlikely(!audit_dummy_context())) 521 __audit_ptrace(t); 522 } 523 524 /* Private API (for audit.c only) */ 525 extern unsigned int audit_serial(void); 526 extern int auditsc_get_stamp(struct audit_context *ctx, 527 struct timespec *t, unsigned int *serial); 528 extern int audit_set_loginuid(uid_t loginuid); 529 #define audit_get_loginuid(t) ((t)->loginuid) 530 #define audit_get_sessionid(t) ((t)->sessionid) 531 extern void audit_log_task_context(struct audit_buffer *ab); 532 extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp); 533 extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode); 534 extern int __audit_bprm(struct linux_binprm *bprm); 535 extern void __audit_socketcall(int nargs, unsigned long *args); 536 extern int __audit_sockaddr(int len, void *addr); 537 extern void __audit_fd_pair(int fd1, int fd2); 538 extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr); 539 extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout); 540 extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification); 541 extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat); 542 extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm, 543 const struct cred *new, 544 const struct cred *old); 545 extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old); 546 extern void __audit_mmap_fd(int fd, int flags); 547 548 static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp) 549 { 550 if (unlikely(!audit_dummy_context())) 551 __audit_ipc_obj(ipcp); 552 } 553 static inline void audit_fd_pair(int fd1, int fd2) 554 { 555 if (unlikely(!audit_dummy_context())) 556 __audit_fd_pair(fd1, fd2); 557 } 558 static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode) 559 { 560 if (unlikely(!audit_dummy_context())) 561 __audit_ipc_set_perm(qbytes, uid, gid, mode); 562 } 563 static inline int audit_bprm(struct linux_binprm *bprm) 564 { 565 if (unlikely(!audit_dummy_context())) 566 return __audit_bprm(bprm); 567 return 0; 568 } 569 static inline void audit_socketcall(int nargs, unsigned long *args) 570 { 571 if (unlikely(!audit_dummy_context())) 572 __audit_socketcall(nargs, args); 573 } 574 static inline int audit_sockaddr(int len, void *addr) 575 { 576 if (unlikely(!audit_dummy_context())) 577 return __audit_sockaddr(len, addr); 578 return 0; 579 } 580 static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr) 581 { 582 if (unlikely(!audit_dummy_context())) 583 __audit_mq_open(oflag, mode, attr); 584 } 585 static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout) 586 { 587 if (unlikely(!audit_dummy_context())) 588 __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout); 589 } 590 static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification) 591 { 592 if (unlikely(!audit_dummy_context())) 593 __audit_mq_notify(mqdes, notification); 594 } 595 static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat) 596 { 597 if (unlikely(!audit_dummy_context())) 598 __audit_mq_getsetattr(mqdes, mqstat); 599 } 600 601 static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm, 602 const struct cred *new, 603 const struct cred *old) 604 { 605 if (unlikely(!audit_dummy_context())) 606 return __audit_log_bprm_fcaps(bprm, new, old); 607 return 0; 608 } 609 610 static inline void audit_log_capset(pid_t pid, const struct cred *new, 611 const struct cred *old) 612 { 613 if (unlikely(!audit_dummy_context())) 614 __audit_log_capset(pid, new, old); 615 } 616 617 static inline void audit_mmap_fd(int fd, int flags) 618 { 619 if (unlikely(!audit_dummy_context())) 620 __audit_mmap_fd(fd, flags); 621 } 622 623 extern int audit_n_rules; 624 extern int audit_signals; 625 #else /* CONFIG_AUDITSYSCALL */ 626 #define audit_alloc(t) ({ 0; }) 627 #define audit_free(t) do { ; } while (0) 628 #define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0) 629 #define audit_syscall_exit(r) do { ; } while (0) 630 #define audit_dummy_context() 1 631 #define audit_getname(n) do { ; } while (0) 632 #define audit_putname(n) do { ; } while (0) 633 #define __audit_inode(n,d) do { ; } while (0) 634 #define __audit_inode_child(i,p) do { ; } while (0) 635 #define audit_inode(n,d) do { (void)(d); } while (0) 636 #define audit_inode_child(i,p) do { ; } while (0) 637 #define audit_core_dumps(i) do { ; } while (0) 638 #define audit_seccomp(i,s,c) do { ; } while (0) 639 #define auditsc_get_stamp(c,t,s) (0) 640 #define audit_get_loginuid(t) (-1) 641 #define audit_get_sessionid(t) (-1) 642 #define audit_log_task_context(b) do { ; } while (0) 643 #define audit_ipc_obj(i) ((void)0) 644 #define audit_ipc_set_perm(q,u,g,m) ((void)0) 645 #define audit_bprm(p) ({ 0; }) 646 #define audit_socketcall(n,a) ((void)0) 647 #define audit_fd_pair(n,a) ((void)0) 648 #define audit_sockaddr(len, addr) ({ 0; }) 649 #define audit_mq_open(o,m,a) ((void)0) 650 #define audit_mq_sendrecv(d,l,p,t) ((void)0) 651 #define audit_mq_notify(d,n) ((void)0) 652 #define audit_mq_getsetattr(d,s) ((void)0) 653 #define audit_log_bprm_fcaps(b, ncr, ocr) ({ 0; }) 654 #define audit_log_capset(pid, ncr, ocr) ((void)0) 655 #define audit_mmap_fd(fd, flags) ((void)0) 656 #define audit_ptrace(t) ((void)0) 657 #define audit_n_rules 0 658 #define audit_signals 0 659 #endif /* CONFIG_AUDITSYSCALL */ 660 661 #ifdef CONFIG_AUDIT 662 /* These are defined in audit.c */ 663 /* Public API */ 664 extern __printf(4, 5) 665 void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type, 666 const char *fmt, ...); 667 668 extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type); 669 extern __printf(2, 3) 670 void audit_log_format(struct audit_buffer *ab, const char *fmt, ...); 671 extern void audit_log_end(struct audit_buffer *ab); 672 extern int audit_string_contains_control(const char *string, 673 size_t len); 674 extern void audit_log_n_hex(struct audit_buffer *ab, 675 const unsigned char *buf, 676 size_t len); 677 extern void audit_log_n_string(struct audit_buffer *ab, 678 const char *buf, 679 size_t n); 680 #define audit_log_string(a,b) audit_log_n_string(a, b, strlen(b)); 681 extern void audit_log_n_untrustedstring(struct audit_buffer *ab, 682 const char *string, 683 size_t n); 684 extern void audit_log_untrustedstring(struct audit_buffer *ab, 685 const char *string); 686 extern void audit_log_d_path(struct audit_buffer *ab, 687 const char *prefix, 688 const struct path *path); 689 extern void audit_log_key(struct audit_buffer *ab, 690 char *key); 691 extern void audit_log_link_denied(const char *operation, 692 struct path *link); 693 extern void audit_log_lost(const char *message); 694 #ifdef CONFIG_SECURITY 695 extern void audit_log_secctx(struct audit_buffer *ab, u32 secid); 696 #else 697 #define audit_log_secctx(b,s) do { ; } while (0) 698 #endif 699 700 extern int audit_update_lsm_rules(void); 701 702 /* Private API (for audit.c only) */ 703 extern int audit_filter_user(struct netlink_skb_parms *cb); 704 extern int audit_filter_type(int type); 705 extern int audit_receive_filter(int type, int pid, int uid, int seq, 706 void *data, size_t datasz, uid_t loginuid, 707 u32 sessionid, u32 sid); 708 extern int audit_enabled; 709 #else 710 #define audit_log(c,g,t,f,...) do { ; } while (0) 711 #define audit_log_start(c,g,t) ({ NULL; }) 712 #define audit_log_vformat(b,f,a) do { ; } while (0) 713 #define audit_log_format(b,f,...) do { ; } while (0) 714 #define audit_log_end(b) do { ; } while (0) 715 #define audit_log_n_hex(a,b,l) do { ; } while (0) 716 #define audit_log_n_string(a,c,l) do { ; } while (0) 717 #define audit_log_string(a,c) do { ; } while (0) 718 #define audit_log_n_untrustedstring(a,n,s) do { ; } while (0) 719 #define audit_log_untrustedstring(a,s) do { ; } while (0) 720 #define audit_log_d_path(b, p, d) do { ; } while (0) 721 #define audit_log_key(b, k) do { ; } while (0) 722 #define audit_log_link_denied(o, l) do { ; } while (0) 723 #define audit_log_secctx(b,s) do { ; } while (0) 724 #define audit_enabled 0 725 #endif 726 #endif 727 #endif 728