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1/* audit.h -- Auditing support
2 *
3 * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
4 * All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 * Written by Rickard E. (Rik) Faith <faith@redhat.com>
21 *
22 */
23
24#ifndef _LINUX_AUDIT_H_
25#define _LINUX_AUDIT_H_
26
27#include <linux/types.h>
28#include <linux/elf-em.h>
29#include <linux/ptrace.h>
30
31/* The netlink messages for the audit system is divided into blocks:
32 * 1000 - 1099 are for commanding the audit system
33 * 1100 - 1199 user space trusted application messages
34 * 1200 - 1299 messages internal to the audit daemon
35 * 1300 - 1399 audit event messages
36 * 1400 - 1499 SE Linux use
37 * 1500 - 1599 kernel LSPP events
38 * 1600 - 1699 kernel crypto events
39 * 1700 - 1799 kernel anomaly records
40 * 1800 - 1899 kernel integrity events
41 * 1900 - 1999 future kernel use
42 * 2000 is for otherwise unclassified kernel audit messages (legacy)
43 * 2001 - 2099 unused (kernel)
44 * 2100 - 2199 user space anomaly records
45 * 2200 - 2299 user space actions taken in response to anomalies
46 * 2300 - 2399 user space generated LSPP events
47 * 2400 - 2499 user space crypto events
48 * 2500 - 2999 future user space (maybe integrity labels and related events)
49 *
50 * Messages from 1000-1199 are bi-directional. 1200-1299 & 2100 - 2999 are
51 * exclusively user space. 1300-2099 is kernel --> user space
52 * communication.
53 */
54#define AUDIT_GET 1000 /* Get status */
55#define AUDIT_SET 1001 /* Set status (enable/disable/auditd) */
56#define AUDIT_LIST 1002 /* List syscall rules -- deprecated */
57#define AUDIT_ADD 1003 /* Add syscall rule -- deprecated */
58#define AUDIT_DEL 1004 /* Delete syscall rule -- deprecated */
59#define AUDIT_USER 1005 /* Message from userspace -- deprecated */
60#define AUDIT_LOGIN 1006 /* Define the login id and information */
61#define AUDIT_WATCH_INS 1007 /* Insert file/dir watch entry */
62#define AUDIT_WATCH_REM 1008 /* Remove file/dir watch entry */
63#define AUDIT_WATCH_LIST 1009 /* List all file/dir watches */
64#define AUDIT_SIGNAL_INFO 1010 /* Get info about sender of signal to auditd */
65#define AUDIT_ADD_RULE 1011 /* Add syscall filtering rule */
66#define AUDIT_DEL_RULE 1012 /* Delete syscall filtering rule */
67#define AUDIT_LIST_RULES 1013 /* List syscall filtering rules */
68#define AUDIT_TRIM 1014 /* Trim junk from watched tree */
69#define AUDIT_MAKE_EQUIV 1015 /* Append to watched tree */
70#define AUDIT_TTY_GET 1016 /* Get TTY auditing status */
71#define AUDIT_TTY_SET 1017 /* Set TTY auditing status */
72
73#define AUDIT_FIRST_USER_MSG 1100 /* Userspace messages mostly uninteresting to kernel */
74#define AUDIT_USER_AVC 1107 /* We filter this differently */
75#define AUDIT_USER_TTY 1124 /* Non-ICANON TTY input meaning */
76#define AUDIT_LAST_USER_MSG 1199
77#define AUDIT_FIRST_USER_MSG2 2100 /* More user space messages */
78#define AUDIT_LAST_USER_MSG2 2999
79
80#define AUDIT_DAEMON_START 1200 /* Daemon startup record */
81#define AUDIT_DAEMON_END 1201 /* Daemon normal stop record */
82#define AUDIT_DAEMON_ABORT 1202 /* Daemon error stop record */
83#define AUDIT_DAEMON_CONFIG 1203 /* Daemon config change */
84
85#define AUDIT_SYSCALL 1300 /* Syscall event */
86/* #define AUDIT_FS_WATCH 1301 * Deprecated */
87#define AUDIT_PATH 1302 /* Filename path information */
88#define AUDIT_IPC 1303 /* IPC record */
89#define AUDIT_SOCKETCALL 1304 /* sys_socketcall arguments */
90#define AUDIT_CONFIG_CHANGE 1305 /* Audit system configuration change */
91#define AUDIT_SOCKADDR 1306 /* sockaddr copied as syscall arg */
92#define AUDIT_CWD 1307 /* Current working directory */
93#define AUDIT_EXECVE 1309 /* execve arguments */
94#define AUDIT_IPC_SET_PERM 1311 /* IPC new permissions record type */
95#define AUDIT_MQ_OPEN 1312 /* POSIX MQ open record type */
96#define AUDIT_MQ_SENDRECV 1313 /* POSIX MQ send/receive record type */
97#define AUDIT_MQ_NOTIFY 1314 /* POSIX MQ notify record type */
98#define AUDIT_MQ_GETSETATTR 1315 /* POSIX MQ get/set attribute record type */
99#define AUDIT_KERNEL_OTHER 1316 /* For use by 3rd party modules */
100#define AUDIT_FD_PAIR 1317 /* audit record for pipe/socketpair */
101#define AUDIT_OBJ_PID 1318 /* ptrace target */
102#define AUDIT_TTY 1319 /* Input on an administrative TTY */
103#define AUDIT_EOE 1320 /* End of multi-record event */
104#define AUDIT_BPRM_FCAPS 1321 /* Information about fcaps increasing perms */
105#define AUDIT_CAPSET 1322 /* Record showing argument to sys_capset */
106#define AUDIT_MMAP 1323 /* Record showing descriptor and flags in mmap */
107#define AUDIT_NETFILTER_PKT 1324 /* Packets traversing netfilter chains */
108#define AUDIT_NETFILTER_CFG 1325 /* Netfilter chain modifications */
109
110#define AUDIT_AVC 1400 /* SE Linux avc denial or grant */
111#define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */
112#define AUDIT_AVC_PATH 1402 /* dentry, vfsmount pair from avc */
113#define AUDIT_MAC_POLICY_LOAD 1403 /* Policy file load */
114#define AUDIT_MAC_STATUS 1404 /* Changed enforcing,permissive,off */
115#define AUDIT_MAC_CONFIG_CHANGE 1405 /* Changes to booleans */
116#define AUDIT_MAC_UNLBL_ALLOW 1406 /* NetLabel: allow unlabeled traffic */
117#define AUDIT_MAC_CIPSOV4_ADD 1407 /* NetLabel: add CIPSOv4 DOI entry */
118#define AUDIT_MAC_CIPSOV4_DEL 1408 /* NetLabel: del CIPSOv4 DOI entry */
119#define AUDIT_MAC_MAP_ADD 1409 /* NetLabel: add LSM domain mapping */
120#define AUDIT_MAC_MAP_DEL 1410 /* NetLabel: del LSM domain mapping */
121#define AUDIT_MAC_IPSEC_ADDSA 1411 /* Not used */
122#define AUDIT_MAC_IPSEC_DELSA 1412 /* Not used */
123#define AUDIT_MAC_IPSEC_ADDSPD 1413 /* Not used */
124#define AUDIT_MAC_IPSEC_DELSPD 1414 /* Not used */
125#define AUDIT_MAC_IPSEC_EVENT 1415 /* Audit an IPSec event */
126#define AUDIT_MAC_UNLBL_STCADD 1416 /* NetLabel: add a static label */
127#define AUDIT_MAC_UNLBL_STCDEL 1417 /* NetLabel: del a static label */
128
129#define AUDIT_FIRST_KERN_ANOM_MSG 1700
130#define AUDIT_LAST_KERN_ANOM_MSG 1799
131#define AUDIT_ANOM_PROMISCUOUS 1700 /* Device changed promiscuous mode */
132#define AUDIT_ANOM_ABEND 1701 /* Process ended abnormally */
133#define AUDIT_ANOM_LINK 1702 /* Suspicious use of file links */
134#define AUDIT_INTEGRITY_DATA 1800 /* Data integrity verification */
135#define AUDIT_INTEGRITY_METADATA 1801 /* Metadata integrity verification */
136#define AUDIT_INTEGRITY_STATUS 1802 /* Integrity enable status */
137#define AUDIT_INTEGRITY_HASH 1803 /* Integrity HASH type */
138#define AUDIT_INTEGRITY_PCR 1804 /* PCR invalidation msgs */
139#define AUDIT_INTEGRITY_RULE 1805 /* policy rule */
140
141#define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */
142
143/* Rule flags */
144#define AUDIT_FILTER_USER 0x00 /* Apply rule to user-generated messages */
145#define AUDIT_FILTER_TASK 0x01 /* Apply rule at task creation (not syscall) */
146#define AUDIT_FILTER_ENTRY 0x02 /* Apply rule at syscall entry */
147#define AUDIT_FILTER_WATCH 0x03 /* Apply rule to file system watches */
148#define AUDIT_FILTER_EXIT 0x04 /* Apply rule at syscall exit */
149#define AUDIT_FILTER_TYPE 0x05 /* Apply rule at audit_log_start */
150
151#define AUDIT_NR_FILTERS 6
152
153#define AUDIT_FILTER_PREPEND 0x10 /* Prepend to front of list */
154
155/* Rule actions */
156#define AUDIT_NEVER 0 /* Do not build context if rule matches */
157#define AUDIT_POSSIBLE 1 /* Build context if rule matches */
158#define AUDIT_ALWAYS 2 /* Generate audit record if rule matches */
159
160/* Rule structure sizes -- if these change, different AUDIT_ADD and
161 * AUDIT_LIST commands must be implemented. */
162#define AUDIT_MAX_FIELDS 64
163#define AUDIT_MAX_KEY_LEN 256
164#define AUDIT_BITMASK_SIZE 64
165#define AUDIT_WORD(nr) ((__u32)((nr)/32))
166#define AUDIT_BIT(nr) (1 << ((nr) - AUDIT_WORD(nr)*32))
167
168#define AUDIT_SYSCALL_CLASSES 16
169#define AUDIT_CLASS_DIR_WRITE 0
170#define AUDIT_CLASS_DIR_WRITE_32 1
171#define AUDIT_CLASS_CHATTR 2
172#define AUDIT_CLASS_CHATTR_32 3
173#define AUDIT_CLASS_READ 4
174#define AUDIT_CLASS_READ_32 5
175#define AUDIT_CLASS_WRITE 6
176#define AUDIT_CLASS_WRITE_32 7
177#define AUDIT_CLASS_SIGNAL 8
178#define AUDIT_CLASS_SIGNAL_32 9
179
180/* This bitmask is used to validate user input. It represents all bits that
181 * are currently used in an audit field constant understood by the kernel.
182 * If you are adding a new #define AUDIT_<whatever>, please ensure that
183 * AUDIT_UNUSED_BITS is updated if need be. */
184#define AUDIT_UNUSED_BITS 0x07FFFC00
185
186/* AUDIT_FIELD_COMPARE rule list */
187#define AUDIT_COMPARE_UID_TO_OBJ_UID 1
188#define AUDIT_COMPARE_GID_TO_OBJ_GID 2
189#define AUDIT_COMPARE_EUID_TO_OBJ_UID 3
190#define AUDIT_COMPARE_EGID_TO_OBJ_GID 4
191#define AUDIT_COMPARE_AUID_TO_OBJ_UID 5
192#define AUDIT_COMPARE_SUID_TO_OBJ_UID 6
193#define AUDIT_COMPARE_SGID_TO_OBJ_GID 7
194#define AUDIT_COMPARE_FSUID_TO_OBJ_UID 8
195#define AUDIT_COMPARE_FSGID_TO_OBJ_GID 9
196
197#define AUDIT_COMPARE_UID_TO_AUID 10
198#define AUDIT_COMPARE_UID_TO_EUID 11
199#define AUDIT_COMPARE_UID_TO_FSUID 12
200#define AUDIT_COMPARE_UID_TO_SUID 13
201
202#define AUDIT_COMPARE_AUID_TO_FSUID 14
203#define AUDIT_COMPARE_AUID_TO_SUID 15
204#define AUDIT_COMPARE_AUID_TO_EUID 16
205
206#define AUDIT_COMPARE_EUID_TO_SUID 17
207#define AUDIT_COMPARE_EUID_TO_FSUID 18
208
209#define AUDIT_COMPARE_SUID_TO_FSUID 19
210
211#define AUDIT_COMPARE_GID_TO_EGID 20
212#define AUDIT_COMPARE_GID_TO_FSGID 21
213#define AUDIT_COMPARE_GID_TO_SGID 22
214
215#define AUDIT_COMPARE_EGID_TO_FSGID 23
216#define AUDIT_COMPARE_EGID_TO_SGID 24
217#define AUDIT_COMPARE_SGID_TO_FSGID 25
218
219#define AUDIT_MAX_FIELD_COMPARE AUDIT_COMPARE_SGID_TO_FSGID
220
221/* Rule fields */
222 /* These are useful when checking the
223 * task structure at task creation time
224 * (AUDIT_PER_TASK). */
225#define AUDIT_PID 0
226#define AUDIT_UID 1
227#define AUDIT_EUID 2
228#define AUDIT_SUID 3
229#define AUDIT_FSUID 4
230#define AUDIT_GID 5
231#define AUDIT_EGID 6
232#define AUDIT_SGID 7
233#define AUDIT_FSGID 8
234#define AUDIT_LOGINUID 9
235#define AUDIT_PERS 10
236#define AUDIT_ARCH 11
237#define AUDIT_MSGTYPE 12
238#define AUDIT_SUBJ_USER 13 /* security label user */
239#define AUDIT_SUBJ_ROLE 14 /* security label role */
240#define AUDIT_SUBJ_TYPE 15 /* security label type */
241#define AUDIT_SUBJ_SEN 16 /* security label sensitivity label */
242#define AUDIT_SUBJ_CLR 17 /* security label clearance label */
243#define AUDIT_PPID 18
244#define AUDIT_OBJ_USER 19
245#define AUDIT_OBJ_ROLE 20
246#define AUDIT_OBJ_TYPE 21
247#define AUDIT_OBJ_LEV_LOW 22
248#define AUDIT_OBJ_LEV_HIGH 23
249
250 /* These are ONLY useful when checking
251 * at syscall exit time (AUDIT_AT_EXIT). */
252#define AUDIT_DEVMAJOR 100
253#define AUDIT_DEVMINOR 101
254#define AUDIT_INODE 102
255#define AUDIT_EXIT 103
256#define AUDIT_SUCCESS 104 /* exit >= 0; value ignored */
257#define AUDIT_WATCH 105
258#define AUDIT_PERM 106
259#define AUDIT_DIR 107
260#define AUDIT_FILETYPE 108
261#define AUDIT_OBJ_UID 109
262#define AUDIT_OBJ_GID 110
263#define AUDIT_FIELD_COMPARE 111
264
265#define AUDIT_ARG0 200
266#define AUDIT_ARG1 (AUDIT_ARG0+1)
267#define AUDIT_ARG2 (AUDIT_ARG0+2)
268#define AUDIT_ARG3 (AUDIT_ARG0+3)
269
270#define AUDIT_FILTERKEY 210
271
272#define AUDIT_NEGATE 0x80000000
273
274/* These are the supported operators.
275 * 4 2 1 8
276 * = > < ?
277 * ----------
278 * 0 0 0 0 00 nonsense
279 * 0 0 0 1 08 & bit mask
280 * 0 0 1 0 10 <
281 * 0 1 0 0 20 >
282 * 0 1 1 0 30 !=
283 * 1 0 0 0 40 =
284 * 1 0 0 1 48 &= bit test
285 * 1 0 1 0 50 <=
286 * 1 1 0 0 60 >=
287 * 1 1 1 1 78 all operators
288 */
289#define AUDIT_BIT_MASK 0x08000000
290#define AUDIT_LESS_THAN 0x10000000
291#define AUDIT_GREATER_THAN 0x20000000
292#define AUDIT_NOT_EQUAL 0x30000000
293#define AUDIT_EQUAL 0x40000000
294#define AUDIT_BIT_TEST (AUDIT_BIT_MASK|AUDIT_EQUAL)
295#define AUDIT_LESS_THAN_OR_EQUAL (AUDIT_LESS_THAN|AUDIT_EQUAL)
296#define AUDIT_GREATER_THAN_OR_EQUAL (AUDIT_GREATER_THAN|AUDIT_EQUAL)
297#define AUDIT_OPERATORS (AUDIT_EQUAL|AUDIT_NOT_EQUAL|AUDIT_BIT_MASK)
298
299enum {
300 Audit_equal,
301 Audit_not_equal,
302 Audit_bitmask,
303 Audit_bittest,
304 Audit_lt,
305 Audit_gt,
306 Audit_le,
307 Audit_ge,
308 Audit_bad
309};
310
311/* Status symbols */
312 /* Mask values */
313#define AUDIT_STATUS_ENABLED 0x0001
314#define AUDIT_STATUS_FAILURE 0x0002
315#define AUDIT_STATUS_PID 0x0004
316#define AUDIT_STATUS_RATE_LIMIT 0x0008
317#define AUDIT_STATUS_BACKLOG_LIMIT 0x0010
318 /* Failure-to-log actions */
319#define AUDIT_FAIL_SILENT 0
320#define AUDIT_FAIL_PRINTK 1
321#define AUDIT_FAIL_PANIC 2
322
323/* distinguish syscall tables */
324#define __AUDIT_ARCH_64BIT 0x80000000
325#define __AUDIT_ARCH_LE 0x40000000
326#define AUDIT_ARCH_ALPHA (EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
327#define AUDIT_ARCH_ARM (EM_ARM|__AUDIT_ARCH_LE)
328#define AUDIT_ARCH_ARMEB (EM_ARM)
329#define AUDIT_ARCH_CRIS (EM_CRIS|__AUDIT_ARCH_LE)
330#define AUDIT_ARCH_FRV (EM_FRV)
331#define AUDIT_ARCH_H8300 (EM_H8_300)
332#define AUDIT_ARCH_I386 (EM_386|__AUDIT_ARCH_LE)
333#define AUDIT_ARCH_IA64 (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
334#define AUDIT_ARCH_M32R (EM_M32R)
335#define AUDIT_ARCH_M68K (EM_68K)
336#define AUDIT_ARCH_MIPS (EM_MIPS)
337#define AUDIT_ARCH_MIPSEL (EM_MIPS|__AUDIT_ARCH_LE)
338#define AUDIT_ARCH_MIPS64 (EM_MIPS|__AUDIT_ARCH_64BIT)
339#define AUDIT_ARCH_MIPSEL64 (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
340#define AUDIT_ARCH_PARISC (EM_PARISC)
341#define AUDIT_ARCH_PARISC64 (EM_PARISC|__AUDIT_ARCH_64BIT)
342#define AUDIT_ARCH_PPC (EM_PPC)
343#define AUDIT_ARCH_PPC64 (EM_PPC64|__AUDIT_ARCH_64BIT)
344#define AUDIT_ARCH_S390 (EM_S390)
345#define AUDIT_ARCH_S390X (EM_S390|__AUDIT_ARCH_64BIT)
346#define AUDIT_ARCH_SH (EM_SH)
347#define AUDIT_ARCH_SHEL (EM_SH|__AUDIT_ARCH_LE)
348#define AUDIT_ARCH_SH64 (EM_SH|__AUDIT_ARCH_64BIT)
349#define AUDIT_ARCH_SHEL64 (EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
350#define AUDIT_ARCH_SPARC (EM_SPARC)
351#define AUDIT_ARCH_SPARC64 (EM_SPARCV9|__AUDIT_ARCH_64BIT)
352#define AUDIT_ARCH_X86_64 (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
353
354#define AUDIT_PERM_EXEC 1
355#define AUDIT_PERM_WRITE 2
356#define AUDIT_PERM_READ 4
357#define AUDIT_PERM_ATTR 8
358
359struct audit_status {
360 __u32 mask; /* Bit mask for valid entries */
361 __u32 enabled; /* 1 = enabled, 0 = disabled */
362 __u32 failure; /* Failure-to-log action */
363 __u32 pid; /* pid of auditd process */
364 __u32 rate_limit; /* messages rate limit (per second) */
365 __u32 backlog_limit; /* waiting messages limit */
366 __u32 lost; /* messages lost */
367 __u32 backlog; /* messages waiting in queue */
368};
369
370struct audit_tty_status {
371 __u32 enabled; /* 1 = enabled, 0 = disabled */
372};
373
374/* audit_rule_data supports filter rules with both integer and string
375 * fields. It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
376 * AUDIT_LIST_RULES requests.
377 */
378struct audit_rule_data {
379 __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
380 __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
381 __u32 field_count;
382 __u32 mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */
383 __u32 fields[AUDIT_MAX_FIELDS];
384 __u32 values[AUDIT_MAX_FIELDS];
385 __u32 fieldflags[AUDIT_MAX_FIELDS];
386 __u32 buflen; /* total length of string fields */
387 char buf[0]; /* string fields buffer */
388};
389
390/* audit_rule is supported to maintain backward compatibility with
391 * userspace. It supports integer fields only and corresponds to
392 * AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests.
393 */
394struct audit_rule { /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
395 __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
396 __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
397 __u32 field_count;
398 __u32 mask[AUDIT_BITMASK_SIZE];
399 __u32 fields[AUDIT_MAX_FIELDS];
400 __u32 values[AUDIT_MAX_FIELDS];
401};
402
403#ifdef __KERNEL__
404#include <linux/sched.h>
405
406struct audit_sig_info {
407 uid_t uid;
408 pid_t pid;
409 char ctx[0];
410};
411
412struct audit_buffer;
413struct audit_context;
414struct inode;
415struct netlink_skb_parms;
416struct path;
417struct linux_binprm;
418struct mq_attr;
419struct mqstat;
420struct audit_watch;
421struct audit_tree;
422
423struct audit_krule {
424 int vers_ops;
425 u32 flags;
426 u32 listnr;
427 u32 action;
428 u32 mask[AUDIT_BITMASK_SIZE];
429 u32 buflen; /* for data alloc on list rules */
430 u32 field_count;
431 char *filterkey; /* ties events to rules */
432 struct audit_field *fields;
433 struct audit_field *arch_f; /* quick access to arch field */
434 struct audit_field *inode_f; /* quick access to an inode field */
435 struct audit_watch *watch; /* associated watch */
436 struct audit_tree *tree; /* associated watched tree */
437 struct list_head rlist; /* entry in audit_{watch,tree}.rules list */
438 struct list_head list; /* for AUDIT_LIST* purposes only */
439 u64 prio;
440};
441
442struct audit_field {
443 u32 type;
444 u32 val;
445 u32 op;
446 char *lsm_str;
447 void *lsm_rule;
448};
449
450extern int __init audit_register_class(int class, unsigned *list);
451extern int audit_classify_syscall(int abi, unsigned syscall);
452extern int audit_classify_arch(int arch);
453#ifdef CONFIG_AUDITSYSCALL
454/* These are defined in auditsc.c */
455 /* Public API */
456extern int audit_alloc(struct task_struct *task);
457extern void __audit_free(struct task_struct *task);
458extern void __audit_syscall_entry(int arch,
459 int major, unsigned long a0, unsigned long a1,
460 unsigned long a2, unsigned long a3);
461extern void __audit_syscall_exit(int ret_success, long ret_value);
462extern void __audit_getname(const char *name);
463extern void audit_putname(const char *name);
464extern void __audit_inode(const char *name, const struct dentry *dentry);
465extern void __audit_inode_child(const struct dentry *dentry,
466 const struct inode *parent);
467extern void __audit_seccomp(unsigned long syscall, long signr, int code);
468extern void __audit_ptrace(struct task_struct *t);
469
470static inline int audit_dummy_context(void)
471{
472 void *p = current->audit_context;
473 return !p || *(int *)p;
474}
475static inline void audit_free(struct task_struct *task)
476{
477 if (unlikely(task->audit_context))
478 __audit_free(task);
479}
480static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
481 unsigned long a1, unsigned long a2,
482 unsigned long a3)
483{
484 if (unlikely(!audit_dummy_context()))
485 __audit_syscall_entry(arch, major, a0, a1, a2, a3);
486}
487static inline void audit_syscall_exit(void *pt_regs)
488{
489 if (unlikely(current->audit_context)) {
490 int success = is_syscall_success(pt_regs);
491 int return_code = regs_return_value(pt_regs);
492
493 __audit_syscall_exit(success, return_code);
494 }
495}
496static inline void audit_getname(const char *name)
497{
498 if (unlikely(!audit_dummy_context()))
499 __audit_getname(name);
500}
501static inline void audit_inode(const char *name, const struct dentry *dentry) {
502 if (unlikely(!audit_dummy_context()))
503 __audit_inode(name, dentry);
504}
505static inline void audit_inode_child(const struct dentry *dentry,
506 const struct inode *parent) {
507 if (unlikely(!audit_dummy_context()))
508 __audit_inode_child(dentry, parent);
509}
510void audit_core_dumps(long signr);
511
512static inline void audit_seccomp(unsigned long syscall, long signr, int code)
513{
514 if (unlikely(!audit_dummy_context()))
515 __audit_seccomp(syscall, signr, code);
516}
517
518static inline void audit_ptrace(struct task_struct *t)
519{
520 if (unlikely(!audit_dummy_context()))
521 __audit_ptrace(t);
522}
523
524 /* Private API (for audit.c only) */
525extern unsigned int audit_serial(void);
526extern int auditsc_get_stamp(struct audit_context *ctx,
527 struct timespec *t, unsigned int *serial);
528extern int audit_set_loginuid(uid_t loginuid);
529#define audit_get_loginuid(t) ((t)->loginuid)
530#define audit_get_sessionid(t) ((t)->sessionid)
531extern void audit_log_task_context(struct audit_buffer *ab);
532extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
533extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
534extern int __audit_bprm(struct linux_binprm *bprm);
535extern void __audit_socketcall(int nargs, unsigned long *args);
536extern int __audit_sockaddr(int len, void *addr);
537extern void __audit_fd_pair(int fd1, int fd2);
538extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
539extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
540extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
541extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
542extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
543 const struct cred *new,
544 const struct cred *old);
545extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
546extern void __audit_mmap_fd(int fd, int flags);
547
548static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
549{
550 if (unlikely(!audit_dummy_context()))
551 __audit_ipc_obj(ipcp);
552}
553static inline void audit_fd_pair(int fd1, int fd2)
554{
555 if (unlikely(!audit_dummy_context()))
556 __audit_fd_pair(fd1, fd2);
557}
558static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
559{
560 if (unlikely(!audit_dummy_context()))
561 __audit_ipc_set_perm(qbytes, uid, gid, mode);
562}
563static inline int audit_bprm(struct linux_binprm *bprm)
564{
565 if (unlikely(!audit_dummy_context()))
566 return __audit_bprm(bprm);
567 return 0;
568}
569static inline void audit_socketcall(int nargs, unsigned long *args)
570{
571 if (unlikely(!audit_dummy_context()))
572 __audit_socketcall(nargs, args);
573}
574static inline int audit_sockaddr(int len, void *addr)
575{
576 if (unlikely(!audit_dummy_context()))
577 return __audit_sockaddr(len, addr);
578 return 0;
579}
580static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
581{
582 if (unlikely(!audit_dummy_context()))
583 __audit_mq_open(oflag, mode, attr);
584}
585static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
586{
587 if (unlikely(!audit_dummy_context()))
588 __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
589}
590static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
591{
592 if (unlikely(!audit_dummy_context()))
593 __audit_mq_notify(mqdes, notification);
594}
595static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
596{
597 if (unlikely(!audit_dummy_context()))
598 __audit_mq_getsetattr(mqdes, mqstat);
599}
600
601static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
602 const struct cred *new,
603 const struct cred *old)
604{
605 if (unlikely(!audit_dummy_context()))
606 return __audit_log_bprm_fcaps(bprm, new, old);
607 return 0;
608}
609
610static inline void audit_log_capset(pid_t pid, const struct cred *new,
611 const struct cred *old)
612{
613 if (unlikely(!audit_dummy_context()))
614 __audit_log_capset(pid, new, old);
615}
616
617static inline void audit_mmap_fd(int fd, int flags)
618{
619 if (unlikely(!audit_dummy_context()))
620 __audit_mmap_fd(fd, flags);
621}
622
623extern int audit_n_rules;
624extern int audit_signals;
625#else /* CONFIG_AUDITSYSCALL */
626#define audit_alloc(t) ({ 0; })
627#define audit_free(t) do { ; } while (0)
628#define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
629#define audit_syscall_exit(r) do { ; } while (0)
630#define audit_dummy_context() 1
631#define audit_getname(n) do { ; } while (0)
632#define audit_putname(n) do { ; } while (0)
633#define __audit_inode(n,d) do { ; } while (0)
634#define __audit_inode_child(i,p) do { ; } while (0)
635#define audit_inode(n,d) do { (void)(d); } while (0)
636#define audit_inode_child(i,p) do { ; } while (0)
637#define audit_core_dumps(i) do { ; } while (0)
638#define audit_seccomp(i,s,c) do { ; } while (0)
639#define auditsc_get_stamp(c,t,s) (0)
640#define audit_get_loginuid(t) (-1)
641#define audit_get_sessionid(t) (-1)
642#define audit_log_task_context(b) do { ; } while (0)
643#define audit_ipc_obj(i) ((void)0)
644#define audit_ipc_set_perm(q,u,g,m) ((void)0)
645#define audit_bprm(p) ({ 0; })
646#define audit_socketcall(n,a) ((void)0)
647#define audit_fd_pair(n,a) ((void)0)
648#define audit_sockaddr(len, addr) ({ 0; })
649#define audit_mq_open(o,m,a) ((void)0)
650#define audit_mq_sendrecv(d,l,p,t) ((void)0)
651#define audit_mq_notify(d,n) ((void)0)
652#define audit_mq_getsetattr(d,s) ((void)0)
653#define audit_log_bprm_fcaps(b, ncr, ocr) ({ 0; })
654#define audit_log_capset(pid, ncr, ocr) ((void)0)
655#define audit_mmap_fd(fd, flags) ((void)0)
656#define audit_ptrace(t) ((void)0)
657#define audit_n_rules 0
658#define audit_signals 0
659#endif /* CONFIG_AUDITSYSCALL */
660
661#ifdef CONFIG_AUDIT
662/* These are defined in audit.c */
663 /* Public API */
664extern __printf(4, 5)
665void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
666 const char *fmt, ...);
667
668extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
669extern __printf(2, 3)
670void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
671extern void audit_log_end(struct audit_buffer *ab);
672extern int audit_string_contains_control(const char *string,
673 size_t len);
674extern void audit_log_n_hex(struct audit_buffer *ab,
675 const unsigned char *buf,
676 size_t len);
677extern void audit_log_n_string(struct audit_buffer *ab,
678 const char *buf,
679 size_t n);
680#define audit_log_string(a,b) audit_log_n_string(a, b, strlen(b));
681extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
682 const char *string,
683 size_t n);
684extern void audit_log_untrustedstring(struct audit_buffer *ab,
685 const char *string);
686extern void audit_log_d_path(struct audit_buffer *ab,
687 const char *prefix,
688 const struct path *path);
689extern void audit_log_key(struct audit_buffer *ab,
690 char *key);
691extern void audit_log_link_denied(const char *operation,
692 struct path *link);
693extern void audit_log_lost(const char *message);
694#ifdef CONFIG_SECURITY
695extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
696#else
697#define audit_log_secctx(b,s) do { ; } while (0)
698#endif
699
700extern int audit_update_lsm_rules(void);
701
702 /* Private API (for audit.c only) */
703extern int audit_filter_user(struct netlink_skb_parms *cb);
704extern int audit_filter_type(int type);
705extern int audit_receive_filter(int type, int pid, int uid, int seq,
706 void *data, size_t datasz, uid_t loginuid,
707 u32 sessionid, u32 sid);
708extern int audit_enabled;
709#else
710#define audit_log(c,g,t,f,...) do { ; } while (0)
711#define audit_log_start(c,g,t) ({ NULL; })
712#define audit_log_vformat(b,f,a) do { ; } while (0)
713#define audit_log_format(b,f,...) do { ; } while (0)
714#define audit_log_end(b) do { ; } while (0)
715#define audit_log_n_hex(a,b,l) do { ; } while (0)
716#define audit_log_n_string(a,c,l) do { ; } while (0)
717#define audit_log_string(a,c) do { ; } while (0)
718#define audit_log_n_untrustedstring(a,n,s) do { ; } while (0)
719#define audit_log_untrustedstring(a,s) do { ; } while (0)
720#define audit_log_d_path(b, p, d) do { ; } while (0)
721#define audit_log_key(b, k) do { ; } while (0)
722#define audit_log_link_denied(o, l) do { ; } while (0)
723#define audit_log_secctx(b,s) do { ; } while (0)
724#define audit_enabled 0
725#endif
726#endif
727#endif