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 _UAPI_LINUX_AUDIT_H_ 25#define _UAPI_LINUX_AUDIT_H_ 26 27#include <linux/types.h> 28#include <linux/elf-em.h> 29 30/* The netlink messages for the audit system is divided into blocks: 31 * 1000 - 1099 are for commanding the audit system 32 * 1100 - 1199 user space trusted application messages 33 * 1200 - 1299 messages internal to the audit daemon 34 * 1300 - 1399 audit event messages 35 * 1400 - 1499 SE Linux use 36 * 1500 - 1599 kernel LSPP events 37 * 1600 - 1699 kernel crypto events 38 * 1700 - 1799 kernel anomaly records 39 * 1800 - 1899 kernel integrity events 40 * 1900 - 1999 future kernel use 41 * 2000 is for otherwise unclassified kernel audit messages (legacy) 42 * 2001 - 2099 unused (kernel) 43 * 2100 - 2199 user space anomaly records 44 * 2200 - 2299 user space actions taken in response to anomalies 45 * 2300 - 2399 user space generated LSPP events 46 * 2400 - 2499 user space crypto events 47 * 2500 - 2999 future user space (maybe integrity labels and related events) 48 * 49 * Messages from 1000-1199 are bi-directional. 1200-1299 & 2100 - 2999 are 50 * exclusively user space. 1300-2099 is kernel --> user space 51 * communication. 52 */ 53#define AUDIT_GET 1000 /* Get status */ 54#define AUDIT_SET 1001 /* Set status (enable/disable/auditd) */ 55#define AUDIT_LIST 1002 /* List syscall rules -- deprecated */ 56#define AUDIT_ADD 1003 /* Add syscall rule -- deprecated */ 57#define AUDIT_DEL 1004 /* Delete syscall rule -- deprecated */ 58#define AUDIT_USER 1005 /* Message from userspace -- deprecated */ 59#define AUDIT_LOGIN 1006 /* Define the login id and information */ 60#define AUDIT_WATCH_INS 1007 /* Insert file/dir watch entry */ 61#define AUDIT_WATCH_REM 1008 /* Remove file/dir watch entry */ 62#define AUDIT_WATCH_LIST 1009 /* List all file/dir watches */ 63#define AUDIT_SIGNAL_INFO 1010 /* Get info about sender of signal to auditd */ 64#define AUDIT_ADD_RULE 1011 /* Add syscall filtering rule */ 65#define AUDIT_DEL_RULE 1012 /* Delete syscall filtering rule */ 66#define AUDIT_LIST_RULES 1013 /* List syscall filtering rules */ 67#define AUDIT_TRIM 1014 /* Trim junk from watched tree */ 68#define AUDIT_MAKE_EQUIV 1015 /* Append to watched tree */ 69#define AUDIT_TTY_GET 1016 /* Get TTY auditing status */ 70#define AUDIT_TTY_SET 1017 /* Set TTY auditing status */ 71 72#define AUDIT_FIRST_USER_MSG 1100 /* Userspace messages mostly uninteresting to kernel */ 73#define AUDIT_USER_AVC 1107 /* We filter this differently */ 74#define AUDIT_USER_TTY 1124 /* Non-ICANON TTY input meaning */ 75#define AUDIT_LAST_USER_MSG 1199 76#define AUDIT_FIRST_USER_MSG2 2100 /* More user space messages */ 77#define AUDIT_LAST_USER_MSG2 2999 78 79#define AUDIT_DAEMON_START 1200 /* Daemon startup record */ 80#define AUDIT_DAEMON_END 1201 /* Daemon normal stop record */ 81#define AUDIT_DAEMON_ABORT 1202 /* Daemon error stop record */ 82#define AUDIT_DAEMON_CONFIG 1203 /* Daemon config change */ 83 84#define AUDIT_SYSCALL 1300 /* Syscall event */ 85/* #define AUDIT_FS_WATCH 1301 * Deprecated */ 86#define AUDIT_PATH 1302 /* Filename path information */ 87#define AUDIT_IPC 1303 /* IPC record */ 88#define AUDIT_SOCKETCALL 1304 /* sys_socketcall arguments */ 89#define AUDIT_CONFIG_CHANGE 1305 /* Audit system configuration change */ 90#define AUDIT_SOCKADDR 1306 /* sockaddr copied as syscall arg */ 91#define AUDIT_CWD 1307 /* Current working directory */ 92#define AUDIT_EXECVE 1309 /* execve arguments */ 93#define AUDIT_IPC_SET_PERM 1311 /* IPC new permissions record type */ 94#define AUDIT_MQ_OPEN 1312 /* POSIX MQ open record type */ 95#define AUDIT_MQ_SENDRECV 1313 /* POSIX MQ send/receive record type */ 96#define AUDIT_MQ_NOTIFY 1314 /* POSIX MQ notify record type */ 97#define AUDIT_MQ_GETSETATTR 1315 /* POSIX MQ get/set attribute record type */ 98#define AUDIT_KERNEL_OTHER 1316 /* For use by 3rd party modules */ 99#define AUDIT_FD_PAIR 1317 /* audit record for pipe/socketpair */ 100#define AUDIT_OBJ_PID 1318 /* ptrace target */ 101#define AUDIT_TTY 1319 /* Input on an administrative TTY */ 102#define AUDIT_EOE 1320 /* End of multi-record event */ 103#define AUDIT_BPRM_FCAPS 1321 /* Information about fcaps increasing perms */ 104#define AUDIT_CAPSET 1322 /* Record showing argument to sys_capset */ 105#define AUDIT_MMAP 1323 /* Record showing descriptor and flags in mmap */ 106#define AUDIT_NETFILTER_PKT 1324 /* Packets traversing netfilter chains */ 107#define AUDIT_NETFILTER_CFG 1325 /* Netfilter chain modifications */ 108#define AUDIT_SECCOMP 1326 /* Secure Computing event */ 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#define AUDIT_LOGINUID_SET 24 250 251 /* These are ONLY useful when checking 252 * at syscall exit time (AUDIT_AT_EXIT). */ 253#define AUDIT_DEVMAJOR 100 254#define AUDIT_DEVMINOR 101 255#define AUDIT_INODE 102 256#define AUDIT_EXIT 103 257#define AUDIT_SUCCESS 104 /* exit >= 0; value ignored */ 258#define AUDIT_WATCH 105 259#define AUDIT_PERM 106 260#define AUDIT_DIR 107 261#define AUDIT_FILETYPE 108 262#define AUDIT_OBJ_UID 109 263#define AUDIT_OBJ_GID 110 264#define AUDIT_FIELD_COMPARE 111 265 266#define AUDIT_ARG0 200 267#define AUDIT_ARG1 (AUDIT_ARG0+1) 268#define AUDIT_ARG2 (AUDIT_ARG0+2) 269#define AUDIT_ARG3 (AUDIT_ARG0+3) 270 271#define AUDIT_FILTERKEY 210 272 273#define AUDIT_NEGATE 0x80000000 274 275/* These are the supported operators. 276 * 4 2 1 8 277 * = > < ? 278 * ---------- 279 * 0 0 0 0 00 nonsense 280 * 0 0 0 1 08 & bit mask 281 * 0 0 1 0 10 < 282 * 0 1 0 0 20 > 283 * 0 1 1 0 30 != 284 * 1 0 0 0 40 = 285 * 1 0 0 1 48 &= bit test 286 * 1 0 1 0 50 <= 287 * 1 1 0 0 60 >= 288 * 1 1 1 1 78 all operators 289 */ 290#define AUDIT_BIT_MASK 0x08000000 291#define AUDIT_LESS_THAN 0x10000000 292#define AUDIT_GREATER_THAN 0x20000000 293#define AUDIT_NOT_EQUAL 0x30000000 294#define AUDIT_EQUAL 0x40000000 295#define AUDIT_BIT_TEST (AUDIT_BIT_MASK|AUDIT_EQUAL) 296#define AUDIT_LESS_THAN_OR_EQUAL (AUDIT_LESS_THAN|AUDIT_EQUAL) 297#define AUDIT_GREATER_THAN_OR_EQUAL (AUDIT_GREATER_THAN|AUDIT_EQUAL) 298#define AUDIT_OPERATORS (AUDIT_EQUAL|AUDIT_NOT_EQUAL|AUDIT_BIT_MASK) 299 300enum { 301 Audit_equal, 302 Audit_not_equal, 303 Audit_bitmask, 304 Audit_bittest, 305 Audit_lt, 306 Audit_gt, 307 Audit_le, 308 Audit_ge, 309 Audit_bad 310}; 311 312/* Status symbols */ 313 /* Mask values */ 314#define AUDIT_STATUS_ENABLED 0x0001 315#define AUDIT_STATUS_FAILURE 0x0002 316#define AUDIT_STATUS_PID 0x0004 317#define AUDIT_STATUS_RATE_LIMIT 0x0008 318#define AUDIT_STATUS_BACKLOG_LIMIT 0x0010 319 /* Failure-to-log actions */ 320#define AUDIT_FAIL_SILENT 0 321#define AUDIT_FAIL_PRINTK 1 322#define AUDIT_FAIL_PANIC 2 323 324/* distinguish syscall tables */ 325#define __AUDIT_ARCH_64BIT 0x80000000 326#define __AUDIT_ARCH_LE 0x40000000 327#define AUDIT_ARCH_ALPHA (EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) 328#define AUDIT_ARCH_ARM (EM_ARM|__AUDIT_ARCH_LE) 329#define AUDIT_ARCH_ARMEB (EM_ARM) 330#define AUDIT_ARCH_CRIS (EM_CRIS|__AUDIT_ARCH_LE) 331#define AUDIT_ARCH_FRV (EM_FRV) 332#define AUDIT_ARCH_H8300 (EM_H8_300) 333#define AUDIT_ARCH_I386 (EM_386|__AUDIT_ARCH_LE) 334#define AUDIT_ARCH_IA64 (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) 335#define AUDIT_ARCH_M32R (EM_M32R) 336#define AUDIT_ARCH_M68K (EM_68K) 337#define AUDIT_ARCH_MIPS (EM_MIPS) 338#define AUDIT_ARCH_MIPSEL (EM_MIPS|__AUDIT_ARCH_LE) 339#define AUDIT_ARCH_MIPS64 (EM_MIPS|__AUDIT_ARCH_64BIT) 340#define AUDIT_ARCH_MIPSEL64 (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) 341#define AUDIT_ARCH_OPENRISC (EM_OPENRISC) 342#define AUDIT_ARCH_PARISC (EM_PARISC) 343#define AUDIT_ARCH_PARISC64 (EM_PARISC|__AUDIT_ARCH_64BIT) 344#define AUDIT_ARCH_PPC (EM_PPC) 345#define AUDIT_ARCH_PPC64 (EM_PPC64|__AUDIT_ARCH_64BIT) 346#define AUDIT_ARCH_S390 (EM_S390) 347#define AUDIT_ARCH_S390X (EM_S390|__AUDIT_ARCH_64BIT) 348#define AUDIT_ARCH_SH (EM_SH) 349#define AUDIT_ARCH_SHEL (EM_SH|__AUDIT_ARCH_LE) 350#define AUDIT_ARCH_SH64 (EM_SH|__AUDIT_ARCH_64BIT) 351#define AUDIT_ARCH_SHEL64 (EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) 352#define AUDIT_ARCH_SPARC (EM_SPARC) 353#define AUDIT_ARCH_SPARC64 (EM_SPARCV9|__AUDIT_ARCH_64BIT) 354#define AUDIT_ARCH_X86_64 (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) 355 356#define AUDIT_PERM_EXEC 1 357#define AUDIT_PERM_WRITE 2 358#define AUDIT_PERM_READ 4 359#define AUDIT_PERM_ATTR 8 360 361struct audit_status { 362 __u32 mask; /* Bit mask for valid entries */ 363 __u32 enabled; /* 1 = enabled, 0 = disabled */ 364 __u32 failure; /* Failure-to-log action */ 365 __u32 pid; /* pid of auditd process */ 366 __u32 rate_limit; /* messages rate limit (per second) */ 367 __u32 backlog_limit; /* waiting messages limit */ 368 __u32 lost; /* messages lost */ 369 __u32 backlog; /* messages waiting in queue */ 370}; 371 372struct audit_tty_status { 373 __u32 enabled; /* 1 = enabled, 0 = disabled */ 374 __u32 log_passwd; /* 1 = enabled, 0 = disabled */ 375}; 376 377/* audit_rule_data supports filter rules with both integer and string 378 * fields. It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and 379 * AUDIT_LIST_RULES requests. 380 */ 381struct audit_rule_data { 382 __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */ 383 __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */ 384 __u32 field_count; 385 __u32 mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */ 386 __u32 fields[AUDIT_MAX_FIELDS]; 387 __u32 values[AUDIT_MAX_FIELDS]; 388 __u32 fieldflags[AUDIT_MAX_FIELDS]; 389 __u32 buflen; /* total length of string fields */ 390 char buf[0]; /* string fields buffer */ 391}; 392 393/* audit_rule is supported to maintain backward compatibility with 394 * userspace. It supports integer fields only and corresponds to 395 * AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests. 396 */ 397struct audit_rule { /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */ 398 __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */ 399 __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */ 400 __u32 field_count; 401 __u32 mask[AUDIT_BITMASK_SIZE]; 402 __u32 fields[AUDIT_MAX_FIELDS]; 403 __u32 values[AUDIT_MAX_FIELDS]; 404}; 405 406#endif /* _UAPI_LINUX_AUDIT_H_ */ 407