LXR linux/include/linux/audit.h

   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
  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
 107#define AUDIT_AVC               1400    /* SE Linux avc denial or grant */
 108#define AUDIT_SELINUX_ERR       1401    /* Internal SE Linux Errors */
 109#define AUDIT_AVC_PATH          1402    /* dentry, vfsmount pair from avc */
 110#define AUDIT_MAC_POLICY_LOAD   1403    /* Policy file load */
 111#define AUDIT_MAC_STATUS        1404    /* Changed enforcing,permissive,off */
 112#define AUDIT_MAC_CONFIG_CHANGE 1405    /* Changes to booleans */
 113#define AUDIT_MAC_UNLBL_ALLOW   1406    /* NetLabel: allow unlabeled traffic */
 114#define AUDIT_MAC_CIPSOV4_ADD   1407    /* NetLabel: add CIPSOv4 DOI entry */
 115#define AUDIT_MAC_CIPSOV4_DEL   1408    /* NetLabel: del CIPSOv4 DOI entry */
 116#define AUDIT_MAC_MAP_ADD       1409    /* NetLabel: add LSM domain mapping */
 117#define AUDIT_MAC_MAP_DEL       1410    /* NetLabel: del LSM domain mapping */
 118#define AUDIT_MAC_IPSEC_ADDSA   1411    /* Not used */
 119#define AUDIT_MAC_IPSEC_DELSA   1412    /* Not used  */
 120#define AUDIT_MAC_IPSEC_ADDSPD  1413    /* Not used */
 121#define AUDIT_MAC_IPSEC_DELSPD  1414    /* Not used */
 122#define AUDIT_MAC_IPSEC_EVENT   1415    /* Audit an IPSec event */
 123#define AUDIT_MAC_UNLBL_STCADD  1416    /* NetLabel: add a static label */
 124#define AUDIT_MAC_UNLBL_STCDEL  1417    /* NetLabel: del a static label */
 125
 126#define AUDIT_FIRST_KERN_ANOM_MSG   1700
 127#define AUDIT_LAST_KERN_ANOM_MSG    1799
 128#define AUDIT_ANOM_PROMISCUOUS      1700 /* Device changed promiscuous mode */
 129#define AUDIT_ANOM_ABEND            1701 /* Process ended abnormally */
 130#define AUDIT_INTEGRITY_DATA        1800 /* Data integrity verification */
 131#define AUDIT_INTEGRITY_METADATA    1801 /* Metadata integrity verification */
 132#define AUDIT_INTEGRITY_STATUS      1802 /* Integrity enable status */
 133#define AUDIT_INTEGRITY_HASH        1803 /* Integrity HASH type */
 134#define AUDIT_INTEGRITY_PCR         1804 /* PCR invalidation msgs */
 135#define AUDIT_INTEGRITY_RULE        1805 /* policy rule */
 136
 137#define AUDIT_KERNEL            2000    /* Asynchronous audit record. NOT A REQUEST. */
 138
 139/* Rule flags */
 140#define AUDIT_FILTER_USER       0x00    /* Apply rule to user-generated messages */
 141#define AUDIT_FILTER_TASK       0x01    /* Apply rule at task creation (not syscall) */
 142#define AUDIT_FILTER_ENTRY      0x02    /* Apply rule at syscall entry */
 143#define AUDIT_FILTER_WATCH      0x03    /* Apply rule to file system watches */
 144#define AUDIT_FILTER_EXIT       0x04    /* Apply rule at syscall exit */
 145#define AUDIT_FILTER_TYPE       0x05    /* Apply rule at audit_log_start */
 146
 147#define AUDIT_NR_FILTERS        6
 148
 149#define AUDIT_FILTER_PREPEND    0x10    /* Prepend to front of list */
 150
 151/* Rule actions */
 152#define AUDIT_NEVER    0        /* Do not build context if rule matches */
 153#define AUDIT_POSSIBLE 1        /* Build context if rule matches  */
 154#define AUDIT_ALWAYS   2        /* Generate audit record if rule matches */
 155
 156/* Rule structure sizes -- if these change, different AUDIT_ADD and
 157 * AUDIT_LIST commands must be implemented. */
 158#define AUDIT_MAX_FIELDS   64
 159#define AUDIT_MAX_KEY_LEN  256
 160#define AUDIT_BITMASK_SIZE 64
 161#define AUDIT_WORD(nr) ((__u32)((nr)/32))
 162#define AUDIT_BIT(nr)  (1 << ((nr) - AUDIT_WORD(nr)*32))
 163
 164#define AUDIT_SYSCALL_CLASSES 16
 165#define AUDIT_CLASS_DIR_WRITE 0
 166#define AUDIT_CLASS_DIR_WRITE_32 1
 167#define AUDIT_CLASS_CHATTR 2
 168#define AUDIT_CLASS_CHATTR_32 3
 169#define AUDIT_CLASS_READ 4
 170#define AUDIT_CLASS_READ_32 5
 171#define AUDIT_CLASS_WRITE 6
 172#define AUDIT_CLASS_WRITE_32 7
 173#define AUDIT_CLASS_SIGNAL 8
 174#define AUDIT_CLASS_SIGNAL_32 9
 175
 176/* This bitmask is used to validate user input.  It represents all bits that
 177 * are currently used in an audit field constant understood by the kernel.
 178 * If you are adding a new #define AUDIT_<whatever>, please ensure that
 179 * AUDIT_UNUSED_BITS is updated if need be. */
 180#define AUDIT_UNUSED_BITS       0x07FFFC00
 181
 182
 183/* Rule fields */
 184                                /* These are useful when checking the
 185                                 * task structure at task creation time
 186                                 * (AUDIT_PER_TASK).  */
 187#define AUDIT_PID       0
 188#define AUDIT_UID       1
 189#define AUDIT_EUID      2
 190#define AUDIT_SUID      3
 191#define AUDIT_FSUID     4
 192#define AUDIT_GID       5
 193#define AUDIT_EGID      6
 194#define AUDIT_SGID      7
 195#define AUDIT_FSGID     8
 196#define AUDIT_LOGINUID  9
 197#define AUDIT_PERS      10
 198#define AUDIT_ARCH      11
 199#define AUDIT_MSGTYPE   12
 200#define AUDIT_SUBJ_USER 13      /* security label user */
 201#define AUDIT_SUBJ_ROLE 14      /* security label role */
 202#define AUDIT_SUBJ_TYPE 15      /* security label type */
 203#define AUDIT_SUBJ_SEN  16      /* security label sensitivity label */
 204#define AUDIT_SUBJ_CLR  17      /* security label clearance label */
 205#define AUDIT_PPID      18
 206#define AUDIT_OBJ_USER  19
 207#define AUDIT_OBJ_ROLE  20
 208#define AUDIT_OBJ_TYPE  21
 209#define AUDIT_OBJ_LEV_LOW       22
 210#define AUDIT_OBJ_LEV_HIGH      23
 211
 212                                /* These are ONLY useful when checking
 213                                 * at syscall exit time (AUDIT_AT_EXIT). */
 214#define AUDIT_DEVMAJOR  100
 215#define AUDIT_DEVMINOR  101
 216#define AUDIT_INODE     102
 217#define AUDIT_EXIT      103
 218#define AUDIT_SUCCESS   104     /* exit >= 0; value ignored */
 219#define AUDIT_WATCH     105
 220#define AUDIT_PERM      106
 221#define AUDIT_DIR       107
 222#define AUDIT_FILETYPE  108
 223
 224#define AUDIT_ARG0      200
 225#define AUDIT_ARG1      (AUDIT_ARG0+1)
 226#define AUDIT_ARG2      (AUDIT_ARG0+2)
 227#define AUDIT_ARG3      (AUDIT_ARG0+3)
 228
 229#define AUDIT_FILTERKEY 210
 230
 231#define AUDIT_NEGATE                    0x80000000
 232
 233/* These are the supported operators.
 234 *      4  2  1  8
 235 *      =  >  <  ?
 236 *      ----------
 237 *      0  0  0  0      00      nonsense
 238 *      0  0  0  1      08      &  bit mask
 239 *      0  0  1  0      10      <
 240 *      0  1  0  0      20      >
 241 *      0  1  1  0      30      !=
 242 *      1  0  0  0      40      =
 243 *      1  0  0  1      48      &=  bit test
 244 *      1  0  1  0      50      <=
 245 *      1  1  0  0      60      >=
 246 *      1  1  1  1      78      all operators
 247 */
 248#define AUDIT_BIT_MASK                  0x08000000
 249#define AUDIT_LESS_THAN                 0x10000000
 250#define AUDIT_GREATER_THAN              0x20000000
 251#define AUDIT_NOT_EQUAL                 0x30000000
 252#define AUDIT_EQUAL                     0x40000000
 253#define AUDIT_BIT_TEST                  (AUDIT_BIT_MASK|AUDIT_EQUAL)
 254#define AUDIT_LESS_THAN_OR_EQUAL        (AUDIT_LESS_THAN|AUDIT_EQUAL)
 255#define AUDIT_GREATER_THAN_OR_EQUAL     (AUDIT_GREATER_THAN|AUDIT_EQUAL)
 256#define AUDIT_OPERATORS                 (AUDIT_EQUAL|AUDIT_NOT_EQUAL|AUDIT_BIT_MASK)
 257
 258enum {
 259        Audit_equal,
 260        Audit_not_equal,
 261        Audit_bitmask,
 262        Audit_bittest,
 263        Audit_lt,
 264        Audit_gt,
 265        Audit_le,
 266        Audit_ge,
 267        Audit_bad
 268};
 269
 270/* Status symbols */
 271                                /* Mask values */
 272#define AUDIT_STATUS_ENABLED            0x0001
 273#define AUDIT_STATUS_FAILURE            0x0002
 274#define AUDIT_STATUS_PID                0x0004
 275#define AUDIT_STATUS_RATE_LIMIT         0x0008
 276#define AUDIT_STATUS_BACKLOG_LIMIT      0x0010
 277                                /* Failure-to-log actions */
 278#define AUDIT_FAIL_SILENT       0
 279#define AUDIT_FAIL_PRINTK       1
 280#define AUDIT_FAIL_PANIC        2
 281
 282/* distinguish syscall tables */
 283#define __AUDIT_ARCH_64BIT 0x80000000
 284#define __AUDIT_ARCH_LE    0x40000000
 285#define AUDIT_ARCH_ALPHA        (EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
 286#define AUDIT_ARCH_ARM          (EM_ARM|__AUDIT_ARCH_LE)
 287#define AUDIT_ARCH_ARMEB        (EM_ARM)
 288#define AUDIT_ARCH_CRIS         (EM_CRIS|__AUDIT_ARCH_LE)
 289#define AUDIT_ARCH_FRV          (EM_FRV)
 290#define AUDIT_ARCH_H8300        (EM_H8_300)
 291#define AUDIT_ARCH_I386         (EM_386|__AUDIT_ARCH_LE)
 292#define AUDIT_ARCH_IA64         (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
 293#define AUDIT_ARCH_M32R         (EM_M32R)
 294#define AUDIT_ARCH_M68K         (EM_68K)
 295#define AUDIT_ARCH_MIPS         (EM_MIPS)
 296#define AUDIT_ARCH_MIPSEL       (EM_MIPS|__AUDIT_ARCH_LE)
 297#define AUDIT_ARCH_MIPS64       (EM_MIPS|__AUDIT_ARCH_64BIT)
 298#define AUDIT_ARCH_MIPSEL64     (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
 299#define AUDIT_ARCH_PARISC       (EM_PARISC)
 300#define AUDIT_ARCH_PARISC64     (EM_PARISC|__AUDIT_ARCH_64BIT)
 301#define AUDIT_ARCH_PPC          (EM_PPC)
 302#define AUDIT_ARCH_PPC64        (EM_PPC64|__AUDIT_ARCH_64BIT)
 303#define AUDIT_ARCH_S390         (EM_S390)
 304#define AUDIT_ARCH_S390X        (EM_S390|__AUDIT_ARCH_64BIT)
 305#define AUDIT_ARCH_SH           (EM_SH)
 306#define AUDIT_ARCH_SHEL         (EM_SH|__AUDIT_ARCH_LE)
 307#define AUDIT_ARCH_SH64         (EM_SH|__AUDIT_ARCH_64BIT)
 308#define AUDIT_ARCH_SHEL64       (EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
 309#define AUDIT_ARCH_SPARC        (EM_SPARC)
 310#define AUDIT_ARCH_SPARC64      (EM_SPARCV9|__AUDIT_ARCH_64BIT)
 311#define AUDIT_ARCH_X86_64       (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
 312
 313#define AUDIT_PERM_EXEC         1
 314#define AUDIT_PERM_WRITE        2
 315#define AUDIT_PERM_READ         4
 316#define AUDIT_PERM_ATTR         8
 317
 318struct audit_status {
 319        __u32           mask;           /* Bit mask for valid entries */
 320        __u32           enabled;        /* 1 = enabled, 0 = disabled */
 321        __u32           failure;        /* Failure-to-log action */
 322        __u32           pid;            /* pid of auditd process */
 323        __u32           rate_limit;     /* messages rate limit (per second) */
 324        __u32           backlog_limit;  /* waiting messages limit */
 325        __u32           lost;           /* messages lost */
 326        __u32           backlog;        /* messages waiting in queue */
 327};
 328
 329struct audit_tty_status {
 330        __u32           enabled; /* 1 = enabled, 0 = disabled */
 331};
 332
 333/* audit_rule_data supports filter rules with both integer and string
 334 * fields.  It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
 335 * AUDIT_LIST_RULES requests.
 336 */
 337struct audit_rule_data {
 338        __u32           flags;  /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
 339        __u32           action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
 340        __u32           field_count;
 341        __u32           mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */
 342        __u32           fields[AUDIT_MAX_FIELDS];
 343        __u32           values[AUDIT_MAX_FIELDS];
 344        __u32           fieldflags[AUDIT_MAX_FIELDS];
 345        __u32           buflen; /* total length of string fields */
 346        char            buf[0]; /* string fields buffer */
 347};
 348
 349/* audit_rule is supported to maintain backward compatibility with
 350 * userspace.  It supports integer fields only and corresponds to
 351 * AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests.
 352 */
 353struct audit_rule {             /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
 354        __u32           flags;  /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
 355        __u32           action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
 356        __u32           field_count;
 357        __u32           mask[AUDIT_BITMASK_SIZE];
 358        __u32           fields[AUDIT_MAX_FIELDS];
 359        __u32           values[AUDIT_MAX_FIELDS];
 360};
 361
 362#ifdef __KERNEL__
 363#include <linux/sched.h>
 364
 365struct audit_sig_info {
 366        uid_t           uid;
 367        pid_t           pid;
 368        char            ctx[0];
 369};
 370
 371struct audit_buffer;
 372struct audit_context;
 373struct inode;
 374struct netlink_skb_parms;
 375struct path;
 376struct linux_binprm;
 377struct mq_attr;
 378struct mqstat;
 379struct audit_watch;
 380struct audit_tree;
 381
 382struct audit_krule {
 383        int                     vers_ops;
 384        u32                     flags;
 385        u32                     listnr;
 386        u32                     action;
 387        u32                     mask[AUDIT_BITMASK_SIZE];
 388        u32                     buflen; /* for data alloc on list rules */
 389        u32                     field_count;
 390        char                    *filterkey; /* ties events to rules */
 391        struct audit_field      *fields;
 392        struct audit_field      *arch_f; /* quick access to arch field */
 393        struct audit_field      *inode_f; /* quick access to an inode field */
 394        struct audit_watch      *watch; /* associated watch */
 395        struct audit_tree       *tree;  /* associated watched tree */
 396        struct list_head        rlist;  /* entry in audit_{watch,tree}.rules list */
 397        struct list_head        list;   /* for AUDIT_LIST* purposes only */
 398        u64                     prio;
 399};
 400
 401struct audit_field {
 402        u32                             type;
 403        u32                             val;
 404        u32                             op;
 405        char                            *lsm_str;
 406        void                            *lsm_rule;
 407};
 408
 409#define AUDITSC_INVALID 0
 410#define AUDITSC_SUCCESS 1
 411#define AUDITSC_FAILURE 2
 412#define AUDITSC_RESULT(x) ( ((long)(x))<0?AUDITSC_FAILURE:AUDITSC_SUCCESS )
 413extern int __init audit_register_class(int class, unsigned *list);
 414extern int audit_classify_syscall(int abi, unsigned syscall);
 415extern int audit_classify_arch(int arch);
 416#ifdef CONFIG_AUDITSYSCALL
 417/* These are defined in auditsc.c */
 418                                /* Public API */
 419extern void audit_finish_fork(struct task_struct *child);
 420extern int  audit_alloc(struct task_struct *task);
 421extern void audit_free(struct task_struct *task);
 422extern void audit_syscall_entry(int arch,
 423                                int major, unsigned long a0, unsigned long a1,
 424                                unsigned long a2, unsigned long a3);
 425extern void audit_syscall_exit(int failed, long return_code);
 426extern void __audit_getname(const char *name);
 427extern void audit_putname(const char *name);
 428extern void __audit_inode(const char *name, const struct dentry *dentry);
 429extern void __audit_inode_child(const struct dentry *dentry,
 430                                const struct inode *parent);
 431extern void __audit_ptrace(struct task_struct *t);
 432
 433static inline int audit_dummy_context(void)
 434{
 435        void *p = current->audit_context;
 436        return !p || *(int *)p;
 437}
 438static inline void audit_getname(const char *name)
 439{
 440        if (unlikely(!audit_dummy_context()))
 441                __audit_getname(name);
 442}
 443static inline void audit_inode(const char *name, const struct dentry *dentry) {
 444        if (unlikely(!audit_dummy_context()))
 445                __audit_inode(name, dentry);
 446}
 447static inline void audit_inode_child(const struct dentry *dentry,
 448                                     const struct inode *parent) {
 449        if (unlikely(!audit_dummy_context()))
 450                __audit_inode_child(dentry, parent);
 451}
 452void audit_core_dumps(long signr);
 453
 454static inline void audit_ptrace(struct task_struct *t)
 455{
 456        if (unlikely(!audit_dummy_context()))
 457                __audit_ptrace(t);
 458}
 459
 460                                /* Private API (for audit.c only) */
 461extern unsigned int audit_serial(void);
 462extern int auditsc_get_stamp(struct audit_context *ctx,
 463                              struct timespec *t, unsigned int *serial);
 464extern int  audit_set_loginuid(struct task_struct *task, uid_t loginuid);
 465#define audit_get_loginuid(t) ((t)->loginuid)
 466#define audit_get_sessionid(t) ((t)->sessionid)
 467extern void audit_log_task_context(struct audit_buffer *ab);
 468extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
 469extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode);
 470extern int audit_bprm(struct linux_binprm *bprm);
 471extern void audit_socketcall(int nargs, unsigned long *args);
 472extern int audit_sockaddr(int len, void *addr);
 473extern void __audit_fd_pair(int fd1, int fd2);
 474extern int audit_set_macxattr(const char *name);
 475extern void __audit_mq_open(int oflag, mode_t mode, struct mq_attr *attr);
 476extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
 477extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
 478extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
 479extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
 480                                  const struct cred *new,
 481                                  const struct cred *old);
 482extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
 483extern void __audit_mmap_fd(int fd, int flags);
 484
 485static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
 486{
 487        if (unlikely(!audit_dummy_context()))
 488                __audit_ipc_obj(ipcp);
 489}
 490static inline void audit_fd_pair(int fd1, int fd2)
 491{
 492        if (unlikely(!audit_dummy_context()))
 493                __audit_fd_pair(fd1, fd2);
 494}
 495static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode)
 496{
 497        if (unlikely(!audit_dummy_context()))
 498                __audit_ipc_set_perm(qbytes, uid, gid, mode);
 499}
 500static inline void audit_mq_open(int oflag, mode_t mode, struct mq_attr *attr)
 501{
 502        if (unlikely(!audit_dummy_context()))
 503                __audit_mq_open(oflag, mode, attr);
 504}
 505static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
 506{
 507        if (unlikely(!audit_dummy_context()))
 508                __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
 509}
 510static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
 511{
 512        if (unlikely(!audit_dummy_context()))
 513                __audit_mq_notify(mqdes, notification);
 514}
 515static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
 516{
 517        if (unlikely(!audit_dummy_context()))
 518                __audit_mq_getsetattr(mqdes, mqstat);
 519}
 520
 521static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
 522                                       const struct cred *new,
 523                                       const struct cred *old)
 524{
 525        if (unlikely(!audit_dummy_context()))
 526                return __audit_log_bprm_fcaps(bprm, new, old);
 527        return 0;
 528}
 529
 530static inline void audit_log_capset(pid_t pid, const struct cred *new,
 531                                   const struct cred *old)
 532{
 533        if (unlikely(!audit_dummy_context()))
 534                __audit_log_capset(pid, new, old);
 535}
 536
 537static inline void audit_mmap_fd(int fd, int flags)
 538{
 539        if (unlikely(!audit_dummy_context()))
 540                __audit_mmap_fd(fd, flags);
 541}
 542
 543extern int audit_n_rules;
 544extern int audit_signals;
 545#else
 546#define audit_finish_fork(t)
 547#define audit_alloc(t) ({ 0; })
 548#define audit_free(t) do { ; } while (0)
 549#define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
 550#define audit_syscall_exit(f,r) do { ; } while (0)
 551#define audit_dummy_context() 1
 552#define audit_getname(n) do { ; } while (0)
 553#define audit_putname(n) do { ; } while (0)
 554#define __audit_inode(n,d) do { ; } while (0)
 555#define __audit_inode_child(i,p) do { ; } while (0)
 556#define audit_inode(n,d) do { (void)(d); } while (0)
 557#define audit_inode_child(i,p) do { ; } while (0)
 558#define audit_core_dumps(i) do { ; } while (0)
 559#define auditsc_get_stamp(c,t,s) (0)
 560#define audit_get_loginuid(t) (-1)
 561#define audit_get_sessionid(t) (-1)
 562#define audit_log_task_context(b) do { ; } while (0)
 563#define audit_ipc_obj(i) ((void)0)
 564#define audit_ipc_set_perm(q,u,g,m) ((void)0)
 565#define audit_bprm(p) ({ 0; })
 566#define audit_socketcall(n,a) ((void)0)
 567#define audit_fd_pair(n,a) ((void)0)
 568#define audit_sockaddr(len, addr) ({ 0; })
 569#define audit_set_macxattr(n) do { ; } while (0)
 570#define audit_mq_open(o,m,a) ((void)0)
 571#define audit_mq_sendrecv(d,l,p,t) ((void)0)
 572#define audit_mq_notify(d,n) ((void)0)
 573#define audit_mq_getsetattr(d,s) ((void)0)
 574#define audit_log_bprm_fcaps(b, ncr, ocr) ({ 0; })
 575#define audit_log_capset(pid, ncr, ocr) ((void)0)
 576#define audit_mmap_fd(fd, flags) ((void)0)
 577#define audit_ptrace(t) ((void)0)
 578#define audit_n_rules 0
 579#define audit_signals 0
 580#endif
 581
 582#ifdef CONFIG_AUDIT
 583/* These are defined in audit.c */
 584                                /* Public API */
 585extern void                 audit_log(struct audit_context *ctx, gfp_t gfp_mask,
 586                                      int type, const char *fmt, ...)
 587                                      __attribute__((format(printf,4,5)));
 588
 589extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
 590extern void                 audit_log_format(struct audit_buffer *ab,
 591                                             const char *fmt, ...)
 592                            __attribute__((format(printf,2,3)));
 593extern void                 audit_log_end(struct audit_buffer *ab);
 594extern int                  audit_string_contains_control(const char *string,
 595                                                          size_t len);
 596extern void                 audit_log_n_hex(struct audit_buffer *ab,
 597                                          const unsigned char *buf,
 598                                          size_t len);
 599extern void                 audit_log_n_string(struct audit_buffer *ab,
 600                                               const char *buf,
 601                                               size_t n);
 602#define audit_log_string(a,b) audit_log_n_string(a, b, strlen(b));
 603extern void                 audit_log_n_untrustedstring(struct audit_buffer *ab,
 604                                                        const char *string,
 605                                                        size_t n);
 606extern void                 audit_log_untrustedstring(struct audit_buffer *ab,
 607                                                      const char *string);
 608extern void                 audit_log_d_path(struct audit_buffer *ab,
 609                                             const char *prefix,
 610                                             struct path *path);
 611extern void                 audit_log_key(struct audit_buffer *ab,
 612                                          char *key);
 613extern void                 audit_log_lost(const char *message);
 614extern int                  audit_update_lsm_rules(void);
 615
 616                                /* Private API (for audit.c only) */
 617extern int audit_filter_user(struct netlink_skb_parms *cb);
 618extern int audit_filter_type(int type);
 619extern int  audit_receive_filter(int type, int pid, int uid, int seq,
 620                                void *data, size_t datasz, uid_t loginuid,
 621                                u32 sessionid, u32 sid);
 622extern int audit_enabled;
 623#else
 624#define audit_log(c,g,t,f,...) do { ; } while (0)
 625#define audit_log_start(c,g,t) ({ NULL; })
 626#define audit_log_vformat(b,f,a) do { ; } while (0)
 627#define audit_log_format(b,f,...) do { ; } while (0)
 628#define audit_log_end(b) do { ; } while (0)
 629#define audit_log_n_hex(a,b,l) do { ; } while (0)
 630#define audit_log_n_string(a,c,l) do { ; } while (0)
 631#define audit_log_string(a,c) do { ; } while (0)
 632#define audit_log_n_untrustedstring(a,n,s) do { ; } while (0)
 633#define audit_log_untrustedstring(a,s) do { ; } while (0)
 634#define audit_log_d_path(b, p, d) do { ; } while (0)
 635#define audit_log_key(b, k) do { ; } while (0)
 636#define audit_enabled 0
 637#endif
 638#endif
 639#endif
 640