linux/include/linux/audit.h
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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
  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
 299enum {
 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
 359struct 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
 370struct 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 */
 378struct 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 */
 394struct 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
 406struct audit_sig_info {
 407        uid_t           uid;
 408        pid_t           pid;
 409        char            ctx[0];
 410};
 411
 412struct audit_buffer;
 413struct audit_context;
 414struct inode;
 415struct netlink_skb_parms;
 416struct path;
 417struct linux_binprm;
 418struct mq_attr;
 419struct mqstat;
 420struct audit_watch;
 421struct audit_tree;
 422
 423struct 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
 442struct audit_field {
 443        u32                             type;
 444        u32                             val;
 445        u32                             op;
 446        char                            *lsm_str;
 447        void                            *lsm_rule;
 448};
 449
 450extern int __init audit_register_class(int class, unsigned *list);
 451extern int audit_classify_syscall(int abi, unsigned syscall);
 452extern int audit_classify_arch(int arch);
 453#ifdef CONFIG_AUDITSYSCALL
 454/* These are defined in auditsc.c */
 455                                /* Public API */
 456extern int  audit_alloc(struct task_struct *task);
 457extern void __audit_free(struct task_struct *task);
 458extern void __audit_syscall_entry(int arch,
 459                                  int major, unsigned long a0, unsigned long a1,
 460                                  unsigned long a2, unsigned long a3);
 461extern void __audit_syscall_exit(int ret_success, long ret_value);
 462extern void __audit_getname(const char *name);
 463extern void audit_putname(const char *name);
 464extern void __audit_inode(const char *name, const struct dentry *dentry);
 465extern void __audit_inode_child(const struct dentry *dentry,
 466                                const struct inode *parent);
 467extern void __audit_seccomp(unsigned long syscall, long signr, int code);
 468extern void __audit_ptrace(struct task_struct *t);
 469
 470static inline int audit_dummy_context(void)
 471{
 472        void *p = current->audit_context;
 473        return !p || *(int *)p;
 474}
 475static inline void audit_free(struct task_struct *task)
 476{
 477        if (unlikely(task->audit_context))
 478                __audit_free(task);
 479}
 480static 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}
 487static 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}
 496static inline void audit_getname(const char *name)
 497{
 498        if (unlikely(!audit_dummy_context()))
 499                __audit_getname(name);
 500}
 501static inline void audit_inode(const char *name, const struct dentry *dentry) {
 502        if (unlikely(!audit_dummy_context()))
 503                __audit_inode(name, dentry);
 504}
 505static 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}
 510void audit_core_dumps(long signr);
 511
 512static 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
 518static 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) */
 525extern unsigned int audit_serial(void);
 526extern int auditsc_get_stamp(struct audit_context *ctx,
 527                              struct timespec *t, unsigned int *serial);
 528extern int  audit_set_loginuid(uid_t loginuid);
 529#define audit_get_loginuid(t) ((t)->loginuid)
 530#define audit_get_sessionid(t) ((t)->sessionid)
 531extern void audit_log_task_context(struct audit_buffer *ab);
 532extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
 533extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
 534extern int __audit_bprm(struct linux_binprm *bprm);
 535extern void __audit_socketcall(int nargs, unsigned long *args);
 536extern int __audit_sockaddr(int len, void *addr);
 537extern void __audit_fd_pair(int fd1, int fd2);
 538extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
 539extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
 540extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
 541extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
 542extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
 543                                  const struct cred *new,
 544                                  const struct cred *old);
 545extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
 546extern void __audit_mmap_fd(int fd, int flags);
 547
 548static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
 549{
 550        if (unlikely(!audit_dummy_context()))
 551                __audit_ipc_obj(ipcp);
 552}
 553static inline void audit_fd_pair(int fd1, int fd2)
 554{
 555        if (unlikely(!audit_dummy_context()))
 556                __audit_fd_pair(fd1, fd2);
 557}
 558static 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}
 563static inline int audit_bprm(struct linux_binprm *bprm)
 564{
 565        if (unlikely(!audit_dummy_context()))
 566                return __audit_bprm(bprm);
 567        return 0;
 568}
 569static inline void audit_socketcall(int nargs, unsigned long *args)
 570{
 571        if (unlikely(!audit_dummy_context()))
 572                __audit_socketcall(nargs, args);
 573}
 574static 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}
 580static 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}
 585static 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}
 590static 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}
 595static 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
 601static 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
 610static 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
 617static inline void audit_mmap_fd(int fd, int flags)
 618{
 619        if (unlikely(!audit_dummy_context()))
 620                __audit_mmap_fd(fd, flags);
 621}
 622
 623extern int audit_n_rules;
 624extern 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 */
 664extern __printf(4, 5)
 665void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
 666               const char *fmt, ...);
 667
 668extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
 669extern __printf(2, 3)
 670void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
 671extern void                 audit_log_end(struct audit_buffer *ab);
 672extern int                  audit_string_contains_control(const char *string,
 673                                                          size_t len);
 674extern void                 audit_log_n_hex(struct audit_buffer *ab,
 675                                          const unsigned char *buf,
 676                                          size_t len);
 677extern 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));
 681extern void                 audit_log_n_untrustedstring(struct audit_buffer *ab,
 682                                                        const char *string,
 683                                                        size_t n);
 684extern void                 audit_log_untrustedstring(struct audit_buffer *ab,
 685                                                      const char *string);
 686extern void                 audit_log_d_path(struct audit_buffer *ab,
 687                                             const char *prefix,
 688                                             const struct path *path);
 689extern void                 audit_log_key(struct audit_buffer *ab,
 690                                          char *key);
 691extern void                 audit_log_link_denied(const char *operation,
 692                                                  struct path *link);
 693extern void                 audit_log_lost(const char *message);
 694#ifdef CONFIG_SECURITY
 695extern 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
 700extern int                  audit_update_lsm_rules(void);
 701
 702                                /* Private API (for audit.c only) */
 703extern int audit_filter_user(struct netlink_skb_parms *cb);
 704extern int audit_filter_type(int type);
 705extern 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);
 708extern 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
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