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