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TOMOYO Linux Cross Reference
Linux/include/linux/audit.h

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Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

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

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