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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_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
298enum {
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
358struct 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
369struct 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 */
377struct 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 */
393struct 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
405struct audit_sig_info {
406 uid_t uid;
407 pid_t pid;
408 char ctx[0];
409};
410
411struct audit_buffer;
412struct audit_context;
413struct inode;
414struct netlink_skb_parms;
415struct path;
416struct linux_binprm;
417struct mq_attr;
418struct mqstat;
419struct audit_watch;
420struct audit_tree;
421
422struct 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
441struct audit_field {
442 u32 type;
443 u32 val;
444 u32 op;
445 char *lsm_str;
446 void *lsm_rule;
447};
448
449extern int __init audit_register_class(int class, unsigned *list);
450extern int audit_classify_syscall(int abi, unsigned syscall);
451extern int audit_classify_arch(int arch);
452#ifdef CONFIG_AUDITSYSCALL
453/* These are defined in auditsc.c */
454 /* Public API */
455extern int audit_alloc(struct task_struct *task);
456extern void __audit_free(struct task_struct *task);
457extern void __audit_syscall_entry(int arch,
458 int major, unsigned long a0, unsigned long a1,
459 unsigned long a2, unsigned long a3);
460extern void __audit_syscall_exit(int ret_success, long ret_value);
461extern void __audit_getname(const char *name);
462extern void audit_putname(const char *name);
463extern void __audit_inode(const char *name, const struct dentry *dentry);
464extern void __audit_inode_child(const struct dentry *dentry,
465 const struct inode *parent);
466extern void __audit_seccomp(unsigned long syscall, long signr, int code);
467extern void __audit_ptrace(struct task_struct *t);
468
469static inline int audit_dummy_context(void)
470{
471 void *p = current->audit_context;
472 return !p || *(int *)p;
473}
474static inline void audit_free(struct task_struct *task)
475{
476 if (unlikely(task->audit_context))
477 __audit_free(task);
478}
479static 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}
486static 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}
495static inline void audit_getname(const char *name)
496{
497 if (unlikely(!audit_dummy_context()))
498 __audit_getname(name);
499}
500static inline void audit_inode(const char *name, const struct dentry *dentry) {
501 if (unlikely(!audit_dummy_context()))
502 __audit_inode(name, dentry);
503}
504static 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}
509void audit_core_dumps(long signr);
510
511static 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
517static 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) */
524extern unsigned int audit_serial(void);
525extern int auditsc_get_stamp(struct audit_context *ctx,
526 struct timespec *t, unsigned int *serial);
527extern int audit_set_loginuid(uid_t loginuid);
528#define audit_get_loginuid(t) ((t)->loginuid)
529#define audit_get_sessionid(t) ((t)->sessionid)
530extern void audit_log_task_context(struct audit_buffer *ab);
531extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
532extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
533extern int __audit_bprm(struct linux_binprm *bprm);
534extern void __audit_socketcall(int nargs, unsigned long *args);
535extern int __audit_sockaddr(int len, void *addr);
536extern void __audit_fd_pair(int fd1, int fd2);
537extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
538extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
539extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
540extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
541extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
542 const struct cred *new,
543 const struct cred *old);
544extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
545extern void __audit_mmap_fd(int fd, int flags);
546
547static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
548{
549 if (unlikely(!audit_dummy_context()))
550 __audit_ipc_obj(ipcp);
551}
552static inline void audit_fd_pair(int fd1, int fd2)
553{
554 if (unlikely(!audit_dummy_context()))
555 __audit_fd_pair(fd1, fd2);
556}
557static 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}
562static inline int audit_bprm(struct linux_binprm *bprm)
563{
564 if (unlikely(!audit_dummy_context()))
565 return __audit_bprm(bprm);
566 return 0;
567}
568static inline void audit_socketcall(int nargs, unsigned long *args)
569{
570 if (unlikely(!audit_dummy_context()))
571 __audit_socketcall(nargs, args);
572}
573static 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}
579static 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}
584static 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}
589static 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}
594static 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
600static 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
609static 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
616static inline void audit_mmap_fd(int fd, int flags)
617{
618 if (unlikely(!audit_dummy_context()))
619 __audit_mmap_fd(fd, flags);
620}
621
622extern int audit_n_rules;
623extern 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 */
663extern __printf(4, 5)
664void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
665 const char *fmt, ...);
666
667extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
668extern __printf(2, 3)
669void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
670extern void audit_log_end(struct audit_buffer *ab);
671extern int audit_string_contains_control(const char *string,
672 size_t len);
673extern void audit_log_n_hex(struct audit_buffer *ab,
674 const unsigned char *buf,
675 size_t len);
676extern 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));
680extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
681 const char *string,
682 size_t n);
683extern void audit_log_untrustedstring(struct audit_buffer *ab,
684 const char *string);
685extern void audit_log_d_path(struct audit_buffer *ab,
686 const char *prefix,
687 const struct path *path);
688extern void audit_log_key(struct audit_buffer *ab,
689 char *key);
690extern void audit_log_lost(const char *message);
691#ifdef CONFIG_SECURITY
692extern 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
697extern int audit_update_lsm_rules(void);
698
699 /* Private API (for audit.c only) */
700extern int audit_filter_user(struct netlink_skb_parms *cb);
701extern int audit_filter_type(int type);
702extern 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);
705extern 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