[mirror_ubuntu-artful-kernel.git] / include / linux / audit.h

/* audit.h -- Auditing support
 *
 * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Written by Rickard E. (Rik) Faith <faith@redhat.com>
 *
 */

#ifndef _LINUX_AUDIT_H_
#define _LINUX_AUDIT_H_

#include <linux/sched.h>
#include <linux/elf.h>

/* The netlink messages for the audit system is divided into blocks:
 * 1000 - 1099 are for commanding the audit system
 * 1100 - 1199 user space trusted application messages
 * 1200 - 1299 messages internal to the audit daemon
 * 1300 - 1399 audit event messages
 * 1400 - 1499 SE Linux use
 * 1500 - 1599 kernel LSPP events
 * 1600 - 1699 kernel crypto events
 * 1700 - 1799 kernel anomaly records
 * 1800 - 1999 future kernel use (maybe integrity labels and related events)
 * 2000 is for otherwise unclassified kernel audit messages (legacy)
 * 2001 - 2099 unused (kernel)
 * 2100 - 2199 user space anomaly records
 * 2200 - 2299 user space actions taken in response to anomalies
 * 2300 - 2399 user space generated LSPP events
 * 2400 - 2499 user space crypto events
 * 2500 - 2999 future user space (maybe integrity labels and related events)
 *
 * Messages from 1000-1199 are bi-directional. 1200-1299 & 2100 - 2999 are
 * exclusively user space. 1300-2099 is kernel --> user space 
 * communication.
 */
#define AUDIT_GET		1000	/* Get status */
#define AUDIT_SET		1001	/* Set status (enable/disable/auditd) */
#define AUDIT_LIST		1002	/* List syscall rules -- deprecated */
#define AUDIT_ADD		1003	/* Add syscall rule -- deprecated */
#define AUDIT_DEL		1004	/* Delete syscall rule -- deprecated */
#define AUDIT_USER		1005	/* Message from userspace -- deprecated */
#define AUDIT_LOGIN		1006	/* Define the login id and information */
#define AUDIT_WATCH_INS		1007	/* Insert file/dir watch entry */
#define AUDIT_WATCH_REM		1008	/* Remove file/dir watch entry */
#define AUDIT_WATCH_LIST	1009	/* List all file/dir watches */
#define AUDIT_SIGNAL_INFO	1010	/* Get info about sender of signal to auditd */
#define AUDIT_ADD_RULE		1011	/* Add syscall filtering rule */
#define AUDIT_DEL_RULE		1012	/* Delete syscall filtering rule */
#define AUDIT_LIST_RULES	1013	/* List syscall filtering rules */

#define AUDIT_FIRST_USER_MSG	1100	/* Userspace messages mostly uninteresting to kernel */
#define AUDIT_USER_AVC		1107	/* We filter this differently */
#define AUDIT_LAST_USER_MSG	1199
#define AUDIT_FIRST_USER_MSG2	2100	/* More user space messages */
#define AUDIT_LAST_USER_MSG2	2999
 
#define AUDIT_DAEMON_START      1200    /* Daemon startup record */
#define AUDIT_DAEMON_END        1201    /* Daemon normal stop record */
#define AUDIT_DAEMON_ABORT      1202    /* Daemon error stop record */
#define AUDIT_DAEMON_CONFIG     1203    /* Daemon config change */

#define AUDIT_SYSCALL		1300	/* Syscall event */
#define AUDIT_FS_WATCH		1301	/* Filesystem watch event */
#define AUDIT_PATH		1302	/* Filename path information */
#define AUDIT_IPC		1303	/* IPC record */
#define AUDIT_SOCKETCALL	1304	/* sys_socketcall arguments */
#define AUDIT_CONFIG_CHANGE	1305	/* Audit system configuration change */
#define AUDIT_SOCKADDR		1306	/* sockaddr copied as syscall arg */
#define AUDIT_CWD		1307	/* Current working directory */
#define AUDIT_EXECVE		1309	/* execve arguments */
#define AUDIT_IPC_SET_PERM	1311	/* IPC new permissions record type */

#define AUDIT_AVC		1400	/* SE Linux avc denial or grant */
#define AUDIT_SELINUX_ERR	1401	/* Internal SE Linux Errors */
#define AUDIT_AVC_PATH		1402	/* dentry, vfsmount pair from avc */
#define AUDIT_MAC_POLICY_LOAD	1403	/* Policy file load */
#define AUDIT_MAC_STATUS	1404	/* Changed enforcing,permissive,off */
#define AUDIT_MAC_CONFIG_CHANGE	1405	/* Changes to booleans */

#define AUDIT_FIRST_KERN_ANOM_MSG   1700
#define AUDIT_LAST_KERN_ANOM_MSG    1799
#define AUDIT_ANOM_PROMISCUOUS      1700 /* Device changed promiscuous mode */

#define AUDIT_KERNEL		2000	/* Asynchronous audit record. NOT A REQUEST. */

/* Rule flags */
#define AUDIT_FILTER_USER	0x00	/* Apply rule to user-generated messages */
#define AUDIT_FILTER_TASK	0x01	/* Apply rule at task creation (not syscall) */
#define AUDIT_FILTER_ENTRY	0x02	/* Apply rule at syscall entry */
#define AUDIT_FILTER_WATCH	0x03	/* Apply rule to file system watches */
#define AUDIT_FILTER_EXIT	0x04	/* Apply rule at syscall exit */
#define AUDIT_FILTER_TYPE	0x05	/* Apply rule at audit_log_start */

#define AUDIT_NR_FILTERS	6

#define AUDIT_FILTER_PREPEND	0x10	/* Prepend to front of list */

/* Rule actions */
#define AUDIT_NEVER    0	/* Do not build context if rule matches */
#define AUDIT_POSSIBLE 1	/* Build context if rule matches  */
#define AUDIT_ALWAYS   2	/* Generate audit record if rule matches */

/* Rule structure sizes -- if these change, different AUDIT_ADD and
 * AUDIT_LIST commands must be implemented. */
#define AUDIT_MAX_FIELDS   64
#define AUDIT_BITMASK_SIZE 64
#define AUDIT_WORD(nr) ((__u32)((nr)/32))
#define AUDIT_BIT(nr)  (1 << ((nr) - AUDIT_WORD(nr)*32))

/* This bitmask is used to validate user input.  It represents all bits that
 * are currently used in an audit field constant understood by the kernel.
 * If you are adding a new #define AUDIT_<whatever>, please ensure that
 * AUDIT_UNUSED_BITS is updated if need be. */
#define AUDIT_UNUSED_BITS	0x0FFFFC00


/* Rule fields */
				/* These are useful when checking the
				 * task structure at task creation time
				 * (AUDIT_PER_TASK).  */
#define AUDIT_PID	0
#define AUDIT_UID	1
#define AUDIT_EUID	2
#define AUDIT_SUID	3
#define AUDIT_FSUID	4
#define AUDIT_GID	5
#define AUDIT_EGID	6
#define AUDIT_SGID	7
#define AUDIT_FSGID	8
#define AUDIT_LOGINUID	9
#define AUDIT_PERS	10
#define AUDIT_ARCH	11
#define AUDIT_MSGTYPE	12
#define AUDIT_SE_USER	13	/* security label user */
#define AUDIT_SE_ROLE	14	/* security label role */
#define AUDIT_SE_TYPE	15	/* security label type */
#define AUDIT_SE_SEN	16	/* security label sensitivity label */
#define AUDIT_SE_CLR	17	/* security label clearance label */

				/* These are ONLY useful when checking
				 * at syscall exit time (AUDIT_AT_EXIT). */
#define AUDIT_DEVMAJOR	100
#define AUDIT_DEVMINOR	101
#define AUDIT_INODE	102
#define AUDIT_EXIT	103
#define AUDIT_SUCCESS   104	/* exit >= 0; value ignored */

#define AUDIT_ARG0      200
#define AUDIT_ARG1      (AUDIT_ARG0+1)
#define AUDIT_ARG2      (AUDIT_ARG0+2)
#define AUDIT_ARG3      (AUDIT_ARG0+3)

#define AUDIT_NEGATE			0x80000000

/* These are the supported operators.
 *	4  2  1
 *	=  >  <
 *	-------
 *	0  0  0		0	nonsense
 *	0  0  1		1	<
 *	0  1  0		2	>
 *	0  1  1		3	!=
 *	1  0  0		4	=
 *	1  0  1		5	<=
 *	1  1  0		6	>=
 *	1  1  1		7	all operators
 */
#define AUDIT_LESS_THAN			0x10000000
#define AUDIT_GREATER_THAN		0x20000000
#define AUDIT_NOT_EQUAL			0x30000000
#define AUDIT_EQUAL			0x40000000
#define AUDIT_LESS_THAN_OR_EQUAL	(AUDIT_LESS_THAN|AUDIT_EQUAL)
#define AUDIT_GREATER_THAN_OR_EQUAL	(AUDIT_GREATER_THAN|AUDIT_EQUAL)
#define AUDIT_OPERATORS			(AUDIT_EQUAL|AUDIT_NOT_EQUAL)

/* Status symbols */
				/* Mask values */
#define AUDIT_STATUS_ENABLED		0x0001
#define AUDIT_STATUS_FAILURE		0x0002
#define AUDIT_STATUS_PID		0x0004
#define AUDIT_STATUS_RATE_LIMIT		0x0008
#define AUDIT_STATUS_BACKLOG_LIMIT	0x0010
				/* Failure-to-log actions */
#define AUDIT_FAIL_SILENT	0
#define AUDIT_FAIL_PRINTK	1
#define AUDIT_FAIL_PANIC	2

/* distinguish syscall tables */
#define __AUDIT_ARCH_64BIT 0x80000000
#define __AUDIT_ARCH_LE	   0x40000000
#define AUDIT_ARCH_ALPHA	(EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_ARM		(EM_ARM|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_ARMEB	(EM_ARM)
#define AUDIT_ARCH_CRIS		(EM_CRIS|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_FRV		(EM_FRV)
#define AUDIT_ARCH_H8300	(EM_H8_300)
#define AUDIT_ARCH_I386		(EM_386|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_IA64		(EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_M32R		(EM_M32R)
#define AUDIT_ARCH_M68K		(EM_68K)
#define AUDIT_ARCH_MIPS		(EM_MIPS)
#define AUDIT_ARCH_MIPSEL	(EM_MIPS|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_MIPS64	(EM_MIPS|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_MIPSEL64	(EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_PARISC	(EM_PARISC)
#define AUDIT_ARCH_PARISC64	(EM_PARISC|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_PPC		(EM_PPC)
#define AUDIT_ARCH_PPC64	(EM_PPC64|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_S390		(EM_S390)
#define AUDIT_ARCH_S390X	(EM_S390|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_SH		(EM_SH)
#define AUDIT_ARCH_SHEL		(EM_SH|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_SH64		(EM_SH|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_SHEL64	(EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_SPARC	(EM_SPARC)
#define AUDIT_ARCH_SPARC64	(EM_SPARCV9|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_V850		(EM_V850|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_X86_64	(EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)

struct audit_status {
	__u32		mask;		/* Bit mask for valid entries */
	__u32		enabled;	/* 1 = enabled, 0 = disabled */
	__u32		failure;	/* Failure-to-log action */
	__u32		pid;		/* pid of auditd process */
	__u32		rate_limit;	/* messages rate limit (per second) */
	__u32		backlog_limit;	/* waiting messages limit */
	__u32		lost;		/* messages lost */
	__u32		backlog;	/* messages waiting in queue */
};

/* audit_rule_data supports filter rules with both integer and string
 * fields.  It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
 * AUDIT_LIST_RULES requests.
 */
struct audit_rule_data {
	__u32		flags;	/* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
	__u32		action;	/* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
	__u32		field_count;
	__u32		mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */
	__u32		fields[AUDIT_MAX_FIELDS];
	__u32		values[AUDIT_MAX_FIELDS];
	__u32		fieldflags[AUDIT_MAX_FIELDS];
	__u32		buflen;	/* total length of string fields */
	char		buf[0];	/* string fields buffer */
};

/* audit_rule is supported to maintain backward compatibility with
 * userspace.  It supports integer fields only and corresponds to
 * AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests.
 */
struct audit_rule {		/* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
	__u32		flags;	/* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
	__u32		action;	/* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
	__u32		field_count;
	__u32		mask[AUDIT_BITMASK_SIZE];
	__u32		fields[AUDIT_MAX_FIELDS];
	__u32		values[AUDIT_MAX_FIELDS];
};

#ifdef __KERNEL__

struct audit_sig_info {
	uid_t		uid;
	pid_t		pid;
	char		ctx[0];
};

struct audit_buffer;
struct audit_context;
struct inode;
struct netlink_skb_parms;
struct linux_binprm;

#define AUDITSC_INVALID 0
#define AUDITSC_SUCCESS 1
#define AUDITSC_FAILURE 2
#define AUDITSC_RESULT(x) ( ((long)(x))<0?AUDITSC_FAILURE:AUDITSC_SUCCESS )
#ifdef CONFIG_AUDITSYSCALL
/* These are defined in auditsc.c */
				/* Public API */
extern int  audit_alloc(struct task_struct *task);
extern void audit_free(struct task_struct *task);
extern void audit_syscall_entry(int arch,
				int major, unsigned long a0, unsigned long a1,
				unsigned long a2, unsigned long a3);
extern void audit_syscall_exit(int failed, long return_code);
extern void audit_getname(const char *name);
extern void audit_putname(const char *name);
extern void __audit_inode(const char *name, const struct inode *inode, unsigned flags);
extern void __audit_inode_child(const char *dname, const struct inode *inode,
				unsigned long pino);
static inline void audit_inode(const char *name, const struct inode *inode,
			       unsigned flags) {
	if (unlikely(current->audit_context))
		__audit_inode(name, inode, flags);
}
static inline void audit_inode_child(const char *dname, 
				     const struct inode *inode, 
				     unsigned long pino) {
	if (unlikely(current->audit_context))
		__audit_inode_child(dname, inode, pino);
}

				/* Private API (for audit.c only) */
extern unsigned int audit_serial(void);
extern void auditsc_get_stamp(struct audit_context *ctx,
			      struct timespec *t, unsigned int *serial);
extern int  audit_set_loginuid(struct task_struct *task, uid_t loginuid);
extern uid_t audit_get_loginuid(struct audit_context *ctx);
extern int audit_ipc_obj(struct kern_ipc_perm *ipcp);
extern int audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode, struct kern_ipc_perm *ipcp);
extern int audit_bprm(struct linux_binprm *bprm);
extern int audit_socketcall(int nargs, unsigned long *args);
extern int audit_sockaddr(int len, void *addr);
extern int audit_avc_path(struct dentry *dentry, struct vfsmount *mnt);
extern int audit_set_macxattr(const char *name);
#else
#define audit_alloc(t) ({ 0; })
#define audit_free(t) do { ; } while (0)
#define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
#define audit_syscall_exit(f,r) do { ; } while (0)
#define audit_getname(n) do { ; } while (0)
#define audit_putname(n) do { ; } while (0)
#define __audit_inode(n,i,f) do { ; } while (0)
#define __audit_inode_child(d,i,p) do { ; } while (0)
#define audit_inode(n,i,f) do { ; } while (0)
#define audit_inode_child(d,i,p) do { ; } while (0)
#define auditsc_get_stamp(c,t,s) do { BUG(); } while (0)
#define audit_get_loginuid(c) ({ -1; })
#define audit_ipc_obj(i) ({ 0; })
#define audit_ipc_set_perm(q,u,g,m,i) ({ 0; })
#define audit_bprm(p) ({ 0; })
#define audit_socketcall(n,a) ({ 0; })
#define audit_sockaddr(len, addr) ({ 0; })
#define audit_avc_path(dentry, mnt) ({ 0; })
#define audit_set_macxattr(n) do { ; } while (0)
#endif

#ifdef CONFIG_AUDIT
/* These are defined in audit.c */
				/* Public API */
extern void		    audit_log(struct audit_context *ctx, gfp_t gfp_mask,
				      int type, const char *fmt, ...)
				      __attribute__((format(printf,4,5)));

extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
extern void		    audit_log_format(struct audit_buffer *ab,
					     const char *fmt, ...)
			    __attribute__((format(printf,2,3)));
extern void		    audit_log_end(struct audit_buffer *ab);
extern void		    audit_log_hex(struct audit_buffer *ab,
					  const unsigned char *buf,
					  size_t len);
extern const char *	    audit_log_untrustedstring(struct audit_buffer *ab,
						      const char *string);
extern void		    audit_log_d_path(struct audit_buffer *ab,
					     const char *prefix,
					     struct dentry *dentry,
					     struct vfsmount *vfsmnt);
				/* Private API (for audit.c only) */
extern int audit_filter_user(struct netlink_skb_parms *cb, int type);
extern int audit_filter_type(int type);
extern int  audit_receive_filter(int type, int pid, int uid, int seq,
			 void *data, size_t datasz, uid_t loginuid, u32 sid);
#else
#define audit_log(c,g,t,f,...) do { ; } while (0)
#define audit_log_start(c,g,t) ({ NULL; })
#define audit_log_vformat(b,f,a) do { ; } while (0)
#define audit_log_format(b,f,...) do { ; } while (0)
#define audit_log_end(b) do { ; } while (0)
#define audit_log_hex(a,b,l) do { ; } while (0)
#define audit_log_untrustedstring(a,s) do { ; } while (0)
#define audit_log_d_path(b,p,d,v) do { ; } while (0)
#endif
#endif
#endif
Commit	Line	Data
85c8721f	1	/* audit.h -- Auditing support
1da177e4 LT	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
2fd6f58b DW	27	#include <linux/sched.h>
	28	#include <linux/elf.h>
	29
c0404993 SG	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
90d526c0 SG	36	* 1500 - 1599 kernel LSPP events
90d526c0 SG	37	* 1600 - 1699 kernel crypto events
5bdb9886 SG	38	* 1700 - 1799 kernel anomaly records
5bdb9886 SG	39	* 1800 - 1999 future kernel use (maybe integrity labels and related events)
90d526c0 SG	40	* 2000 is for otherwise unclassified kernel audit messages (legacy)
	41	* 2001 - 2099 unused (kernel)
	42	* 2100 - 2199 user space anomaly records
	43	* 2200 - 2299 user space actions taken in response to anomalies
	44	* 2300 - 2399 user space generated LSPP events
	45	* 2400 - 2499 user space crypto events
	46	* 2500 - 2999 future user space (maybe integrity labels and related events)
c0404993	47	*
90d526c0 SG	48	* Messages from 1000-1199 are bi-directional. 1200-1299 & 2100 - 2999 are
	49	* exclusively user space. 1300-2099 is kernel --> user space
	50	* communication.
c0404993	51	*/
c2f0c7c3 SG	52	#define AUDIT_GET 1000 /* Get status */
c2f0c7c3 SG	53	#define AUDIT_SET 1001 /* Set status (enable/disable/auditd) */
93315ed6 AG	54	#define AUDIT_LIST 1002 /* List syscall rules -- deprecated */
	55	#define AUDIT_ADD 1003 /* Add syscall rule -- deprecated */
	56	#define AUDIT_DEL 1004 /* Delete syscall rule -- deprecated */
c0404993	57	#define AUDIT_USER 1005 /* Message from userspace -- deprecated */
c2f0c7c3	58	#define AUDIT_LOGIN 1006 /* Define the login id and information */
c0404993 SG	59	#define AUDIT_WATCH_INS 1007 /* Insert file/dir watch entry */
	60	#define AUDIT_WATCH_REM 1008 /* Remove file/dir watch entry */
	61	#define AUDIT_WATCH_LIST 1009 /* List all file/dir watches */
	62	#define AUDIT_SIGNAL_INFO 1010 /* Get info about sender of signal to auditd */
93315ed6 AG	63	#define AUDIT_ADD_RULE 1011 /* Add syscall filtering rule */
	64	#define AUDIT_DEL_RULE 1012 /* Delete syscall filtering rule */
	65	#define AUDIT_LIST_RULES 1013 /* List syscall filtering rules */
c0404993	66
4a4cd633 DW	67	#define AUDIT_FIRST_USER_MSG 1100 /* Userspace messages mostly uninteresting to kernel */
4a4cd633 DW	68	#define AUDIT_USER_AVC 1107 /* We filter this differently */
209aba03	69	#define AUDIT_LAST_USER_MSG 1199
90d526c0 SG	70	#define AUDIT_FIRST_USER_MSG2 2100 /* More user space messages */
90d526c0 SG	71	#define AUDIT_LAST_USER_MSG2 2999
c0404993 SG	72
	73	#define AUDIT_DAEMON_START 1200 /* Daemon startup record */
	74	#define AUDIT_DAEMON_END 1201 /* Daemon normal stop record */
	75	#define AUDIT_DAEMON_ABORT 1202 /* Daemon error stop record */
	76	#define AUDIT_DAEMON_CONFIG 1203 /* Daemon config change */
	77
	78	#define AUDIT_SYSCALL 1300 /* Syscall event */
	79	#define AUDIT_FS_WATCH 1301 /* Filesystem watch event */
8f37d47c	80	#define AUDIT_PATH 1302 /* Filename path information */
c0404993	81	#define AUDIT_IPC 1303 /* IPC record */
3ec3b2fb	82	#define AUDIT_SOCKETCALL 1304 /* sys_socketcall arguments */
c0404993	83	#define AUDIT_CONFIG_CHANGE 1305 /* Audit system configuration change */
3ec3b2fb	84	#define AUDIT_SOCKADDR 1306 /* sockaddr copied as syscall arg */
8f37d47c	85	#define AUDIT_CWD 1307 /* Current working directory */
473ae30b	86	#define AUDIT_EXECVE 1309 /* execve arguments */
073115d6	87	#define AUDIT_IPC_SET_PERM 1311 /* IPC new permissions record type */
c0404993 SG	88
	89	#define AUDIT_AVC 1400 /* SE Linux avc denial or grant */
	90	#define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */
01116105	91	#define AUDIT_AVC_PATH 1402 /* dentry, vfsmount pair from avc */
af601e46 SG	92	#define AUDIT_MAC_POLICY_LOAD 1403 /* Policy file load */
	93	#define AUDIT_MAC_STATUS 1404 /* Changed enforcing,permissive,off */
	94	#define AUDIT_MAC_CONFIG_CHANGE 1405 /* Changes to booleans */
c2f0c7c3	95
5bdb9886 SG	96	#define AUDIT_FIRST_KERN_ANOM_MSG 1700
	97	#define AUDIT_LAST_KERN_ANOM_MSG 1799
	98	#define AUDIT_ANOM_PROMISCUOUS 1700 /* Device changed promiscuous mode */
	99
c2f0c7c3	100	#define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */
1da177e4 LT	101
1da177e4 LT	102	/* Rule flags */
0f45aa18 DW	103	#define AUDIT_FILTER_USER 0x00 /* Apply rule to user-generated messages */
	104	#define AUDIT_FILTER_TASK 0x01 /* Apply rule at task creation (not syscall) */
	105	#define AUDIT_FILTER_ENTRY 0x02 /* Apply rule at syscall entry */
	106	#define AUDIT_FILTER_WATCH 0x03 /* Apply rule to file system watches */
	107	#define AUDIT_FILTER_EXIT 0x04 /* Apply rule at syscall exit */
c8edc80c	108	#define AUDIT_FILTER_TYPE 0x05 /* Apply rule at audit_log_start */
0f45aa18	109
c8edc80c	110	#define AUDIT_NR_FILTERS 6
0f45aa18 DW	111
0f45aa18 DW	112	#define AUDIT_FILTER_PREPEND 0x10 /* Prepend to front of list */
1da177e4 LT	113
	114	/* Rule actions */
	115	#define AUDIT_NEVER 0 /* Do not build context if rule matches */
	116	#define AUDIT_POSSIBLE 1 /* Build context if rule matches */
	117	#define AUDIT_ALWAYS 2 /* Generate audit record if rule matches */
	118
	119	/* Rule structure sizes -- if these change, different AUDIT_ADD and
	120	* AUDIT_LIST commands must be implemented. */
	121	#define AUDIT_MAX_FIELDS 64
	122	#define AUDIT_BITMASK_SIZE 64
	123	#define AUDIT_WORD(nr) ((__u32)((nr)/32))
	124	#define AUDIT_BIT(nr) (1 << ((nr) - AUDIT_WORD(nr)*32))
	125
b63862f4 DK	126	/* This bitmask is used to validate user input. It represents all bits that
	127	* are currently used in an audit field constant understood by the kernel.
	128	* If you are adding a new #define AUDIT_<whatever>, please ensure that
	129	* AUDIT_UNUSED_BITS is updated if need be. */
	130	#define AUDIT_UNUSED_BITS 0x0FFFFC00
	131
	132
1da177e4 LT	133	/* Rule fields */
	134	/* These are useful when checking the
	135	* task structure at task creation time
	136	* (AUDIT_PER_TASK). */
	137	#define AUDIT_PID 0
	138	#define AUDIT_UID 1
	139	#define AUDIT_EUID 2
	140	#define AUDIT_SUID 3
	141	#define AUDIT_FSUID 4
	142	#define AUDIT_GID 5
	143	#define AUDIT_EGID 6
	144	#define AUDIT_SGID 7
	145	#define AUDIT_FSGID 8
	146	#define AUDIT_LOGINUID 9
	147	#define AUDIT_PERS 10
2fd6f58b	148	#define AUDIT_ARCH 11
c8edc80c	149	#define AUDIT_MSGTYPE 12
376bd9cb DG	150	#define AUDIT_SE_USER 13 /* security label user */
	151	#define AUDIT_SE_ROLE 14 /* security label role */
	152	#define AUDIT_SE_TYPE 15 /* security label type */
	153	#define AUDIT_SE_SEN 16 /* security label sensitivity label */
	154	#define AUDIT_SE_CLR 17 /* security label clearance label */
1da177e4 LT	155
	156	/* These are ONLY useful when checking
	157	* at syscall exit time (AUDIT_AT_EXIT). */
	158	#define AUDIT_DEVMAJOR 100
	159	#define AUDIT_DEVMINOR 101
	160	#define AUDIT_INODE 102
	161	#define AUDIT_EXIT 103
	162	#define AUDIT_SUCCESS 104 /* exit >= 0; value ignored */
	163
	164	#define AUDIT_ARG0 200
	165	#define AUDIT_ARG1 (AUDIT_ARG0+1)
	166	#define AUDIT_ARG2 (AUDIT_ARG0+2)
	167	#define AUDIT_ARG3 (AUDIT_ARG0+3)
	168
b63862f4 DK	169	#define AUDIT_NEGATE 0x80000000
	170
	171	/* These are the supported operators.
	172	* 4 2 1
	173	* = > <
	174	* -------
	175	* 0 0 0 0 nonsense
	176	* 0 0 1 1 <
	177	* 0 1 0 2 >
	178	* 0 1 1 3 !=
	179	* 1 0 0 4 =
	180	* 1 0 1 5 <=
	181	* 1 1 0 6 >=
	182	* 1 1 1 7 all operators
	183	*/
	184	#define AUDIT_LESS_THAN 0x10000000
	185	#define AUDIT_GREATER_THAN 0x20000000
	186	#define AUDIT_NOT_EQUAL 0x30000000
	187	#define AUDIT_EQUAL 0x40000000
	188	#define AUDIT_LESS_THAN_OR_EQUAL (AUDIT_LESS_THAN\|AUDIT_EQUAL)
	189	#define AUDIT_GREATER_THAN_OR_EQUAL (AUDIT_GREATER_THAN\|AUDIT_EQUAL)
	190	#define AUDIT_OPERATORS (AUDIT_EQUAL\|AUDIT_NOT_EQUAL)
1da177e4 LT	191
	192	/* Status symbols */
	193	/* Mask values */
	194	#define AUDIT_STATUS_ENABLED 0x0001
	195	#define AUDIT_STATUS_FAILURE 0x0002
	196	#define AUDIT_STATUS_PID 0x0004
	197	#define AUDIT_STATUS_RATE_LIMIT 0x0008
	198	#define AUDIT_STATUS_BACKLOG_LIMIT 0x0010
	199	/* Failure-to-log actions */
	200	#define AUDIT_FAIL_SILENT 0
	201	#define AUDIT_FAIL_PRINTK 1
	202	#define AUDIT_FAIL_PANIC 2
	203
2fd6f58b DW	204	/* distinguish syscall tables */
	205	#define __AUDIT_ARCH_64BIT 0x80000000
	206	#define __AUDIT_ARCH_LE 0x40000000
	207	#define AUDIT_ARCH_ALPHA (EM_ALPHA\|__AUDIT_ARCH_64BIT\|__AUDIT_ARCH_LE)
	208	#define AUDIT_ARCH_ARM (EM_ARM\|__AUDIT_ARCH_LE)
	209	#define AUDIT_ARCH_ARMEB (EM_ARM)
	210	#define AUDIT_ARCH_CRIS (EM_CRIS\|__AUDIT_ARCH_LE)
	211	#define AUDIT_ARCH_FRV (EM_FRV)
	212	#define AUDIT_ARCH_H8300 (EM_H8_300)
	213	#define AUDIT_ARCH_I386 (EM_386\|__AUDIT_ARCH_LE)
	214	#define AUDIT_ARCH_IA64 (EM_IA_64\|__AUDIT_ARCH_64BIT\|__AUDIT_ARCH_LE)
	215	#define AUDIT_ARCH_M32R (EM_M32R)
	216	#define AUDIT_ARCH_M68K (EM_68K)
	217	#define AUDIT_ARCH_MIPS (EM_MIPS)
	218	#define AUDIT_ARCH_MIPSEL (EM_MIPS\|__AUDIT_ARCH_LE)
	219	#define AUDIT_ARCH_MIPS64 (EM_MIPS\|__AUDIT_ARCH_64BIT)
	220	#define AUDIT_ARCH_MIPSEL64 (EM_MIPS\|__AUDIT_ARCH_64BIT\|__AUDIT_ARCH_LE)
	221	#define AUDIT_ARCH_PARISC (EM_PARISC)
	222	#define AUDIT_ARCH_PARISC64 (EM_PARISC\|__AUDIT_ARCH_64BIT)
	223	#define AUDIT_ARCH_PPC (EM_PPC)
	224	#define AUDIT_ARCH_PPC64 (EM_PPC64\|__AUDIT_ARCH_64BIT)
	225	#define AUDIT_ARCH_S390 (EM_S390)
	226	#define AUDIT_ARCH_S390X (EM_S390\|__AUDIT_ARCH_64BIT)
	227	#define AUDIT_ARCH_SH (EM_SH)
	228	#define AUDIT_ARCH_SHEL (EM_SH\|__AUDIT_ARCH_LE)
	229	#define AUDIT_ARCH_SH64 (EM_SH\|__AUDIT_ARCH_64BIT)
	230	#define AUDIT_ARCH_SHEL64 (EM_SH\|__AUDIT_ARCH_64BIT\|__AUDIT_ARCH_LE)
	231	#define AUDIT_ARCH_SPARC (EM_SPARC)
f7ceba36	232	#define AUDIT_ARCH_SPARC64 (EM_SPARCV9\|__AUDIT_ARCH_64BIT)
2fd6f58b DW	233	#define AUDIT_ARCH_V850 (EM_V850\|__AUDIT_ARCH_LE)
	234	#define AUDIT_ARCH_X86_64 (EM_X86_64\|__AUDIT_ARCH_64BIT\|__AUDIT_ARCH_LE)
	235
1da177e4 LT	236	struct audit_status {
1da177e4 LT	237	__u32 mask; /* Bit mask for valid entries */
23f32d18	238	__u32 enabled; /* 1 = enabled, 0 = disabled */
1da177e4 LT	239	__u32 failure; /* Failure-to-log action */
	240	__u32 pid; /* pid of auditd process */
	241	__u32 rate_limit; /* messages rate limit (per second) */
	242	__u32 backlog_limit; /* waiting messages limit */
	243	__u32 lost; /* messages lost */
	244	__u32 backlog; /* messages waiting in queue */
	245	};
	246
93315ed6 AG	247	/* audit_rule_data supports filter rules with both integer and string
	248	* fields. It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
	249	* AUDIT_LIST_RULES requests.
	250	*/
	251	struct audit_rule_data {
	252	__u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
	253	__u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
	254	__u32 field_count;
5d330108	255	__u32 mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */
93315ed6 AG	256	__u32 fields[AUDIT_MAX_FIELDS];
	257	__u32 values[AUDIT_MAX_FIELDS];
	258	__u32 fieldflags[AUDIT_MAX_FIELDS];
	259	__u32 buflen; /* total length of string fields */
	260	char buf[0]; /* string fields buffer */
	261	};
	262
	263	/* audit_rule is supported to maintain backward compatibility with
	264	* userspace. It supports integer fields only and corresponds to
	265	* AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests.
	266	*/
1da177e4 LT	267	struct audit_rule { /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
	268	__u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
	269	__u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
	270	__u32 field_count;
	271	__u32 mask[AUDIT_BITMASK_SIZE];
	272	__u32 fields[AUDIT_MAX_FIELDS];
	273	__u32 values[AUDIT_MAX_FIELDS];
	274	};
	275
	276	#ifdef __KERNEL__
	277
c2f0c7c3 SG	278	struct audit_sig_info {
	279	uid_t uid;
	280	pid_t pid;
e1396065	281	char ctx[0];
c2f0c7c3 SG	282	};
c2f0c7c3 SG	283
1da177e4 LT	284	struct audit_buffer;
	285	struct audit_context;
	286	struct inode;
5bb289b5	287	struct netlink_skb_parms;
473ae30b	288	struct linux_binprm;
1da177e4	289
2fd6f58b DW	290	#define AUDITSC_INVALID 0
	291	#define AUDITSC_SUCCESS 1
	292	#define AUDITSC_FAILURE 2
	293	#define AUDITSC_RESULT(x) ( ((long)(x))<0?AUDITSC_FAILURE:AUDITSC_SUCCESS )
1da177e4 LT	294	#ifdef CONFIG_AUDITSYSCALL
	295	/* These are defined in auditsc.c */
	296	/* Public API */
	297	extern int audit_alloc(struct task_struct *task);
	298	extern void audit_free(struct task_struct *task);
5411be59	299	extern void audit_syscall_entry(int arch,
1da177e4 LT	300	int major, unsigned long a0, unsigned long a1,
1da177e4 LT	301	unsigned long a2, unsigned long a3);
5411be59	302	extern void audit_syscall_exit(int failed, long return_code);
1da177e4 LT	303	extern void audit_getname(const char *name);
1da177e4 LT	304	extern void audit_putname(const char *name);
73241ccc AG	305	extern void __audit_inode(const char name, const struct inode inode, unsigned flags);
	306	extern void __audit_inode_child(const char dname, const struct inode inode,
	307	unsigned long pino);
	308	static inline void audit_inode(const char name, const struct inode inode,
	309	unsigned flags) {
	310	if (unlikely(current->audit_context))
	311	__audit_inode(name, inode, flags);
	312	}
	313	static inline void audit_inode_child(const char *dname,
	314	const struct inode *inode,
	315	unsigned long pino) {
	316	if (unlikely(current->audit_context))
	317	__audit_inode_child(dname, inode, pino);
	318	}
1da177e4 LT	319
1da177e4 LT	320	/* Private API (for audit.c only) */
bfb4496e DW	321	extern unsigned int audit_serial(void);
	322	extern void auditsc_get_stamp(struct audit_context *ctx,
	323	struct timespec t, unsigned int serial);
456be6cd	324	extern int audit_set_loginuid(struct task_struct *task, uid_t loginuid);
1da177e4	325	extern uid_t audit_get_loginuid(struct audit_context *ctx);
073115d6 SG	326	extern int audit_ipc_obj(struct kern_ipc_perm *ipcp);
073115d6 SG	327	extern int audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode, struct kern_ipc_perm *ipcp);
473ae30b	328	extern int audit_bprm(struct linux_binprm *bprm);
3ec3b2fb DW	329	extern int audit_socketcall(int nargs, unsigned long *args);
3ec3b2fb DW	330	extern int audit_sockaddr(int len, void *addr);
01116105	331	extern int audit_avc_path(struct dentry dentry, struct vfsmount mnt);
8c8570fb	332	extern int audit_set_macxattr(const char *name);
1da177e4 LT	333	#else
	334	#define audit_alloc(t) ({ 0; })
	335	#define audit_free(t) do { ; } while (0)
5411be59 AV	336	#define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
5411be59 AV	337	#define audit_syscall_exit(f,r) do { ; } while (0)
1da177e4 LT	338	#define audit_getname(n) do { ; } while (0)
1da177e4 LT	339	#define audit_putname(n) do { ; } while (0)
73241ccc AG	340	#define __audit_inode(n,i,f) do { ; } while (0)
73241ccc AG	341	#define __audit_inode_child(d,i,p) do { ; } while (0)
ae7b961b	342	#define audit_inode(n,i,f) do { ; } while (0)
73241ccc	343	#define audit_inode_child(d,i,p) do { ; } while (0)
bfb4496e	344	#define auditsc_get_stamp(c,t,s) do { BUG(); } while (0)
1da177e4	345	#define audit_get_loginuid(c) ({ -1; })
073115d6 SG	346	#define audit_ipc_obj(i) ({ 0; })
073115d6 SG	347	#define audit_ipc_set_perm(q,u,g,m,i) ({ 0; })
473ae30b	348	#define audit_bprm(p) ({ 0; })
3ec3b2fb DW	349	#define audit_socketcall(n,a) ({ 0; })
3ec3b2fb DW	350	#define audit_sockaddr(len, addr) ({ 0; })
01116105	351	#define audit_avc_path(dentry, mnt) ({ 0; })
8c8570fb	352	#define audit_set_macxattr(n) do { ; } while (0)
1da177e4 LT	353	#endif
	354
	355	#ifdef CONFIG_AUDIT
	356	/* These are defined in audit.c */
	357	/* Public API */
9796fdd8	358	extern void audit_log(struct audit_context *ctx, gfp_t gfp_mask,
9ad9ad38 DW	359	int type, const char *fmt, ...)
9ad9ad38 DW	360	__attribute__((format(printf,4,5)));
1da177e4	361
9796fdd8	362	extern struct audit_buffer audit_log_start(struct audit_context ctx, gfp_t gfp_mask, int type);
1da177e4 LT	363	extern void audit_log_format(struct audit_buffer *ab,
	364	const char *fmt, ...)
	365	__attribute__((format(printf,2,3)));
	366	extern void audit_log_end(struct audit_buffer *ab);
83c7d091 DW	367	extern void audit_log_hex(struct audit_buffer *ab,
	368	const unsigned char *buf,
	369	size_t len);
473ae30b	370	extern const char * audit_log_untrustedstring(struct audit_buffer *ab,
83c7d091	371	const char *string);
1da177e4 LT	372	extern void audit_log_d_path(struct audit_buffer *ab,
	373	const char *prefix,
	374	struct dentry *dentry,
	375	struct vfsmount *vfsmnt);
fe7752ba DW	376	/* Private API (for audit.c only) */
	377	extern int audit_filter_user(struct netlink_skb_parms *cb, int type);
	378	extern int audit_filter_type(int type);
	379	extern int audit_receive_filter(int type, int pid, int uid, int seq,
ce29b682	380	void *data, size_t datasz, uid_t loginuid, u32 sid);
1da177e4	381	#else
7b430437	382	#define audit_log(c,g,t,f,...) do { ; } while (0)
13774024	383	#define audit_log_start(c,g,t) ({ NULL; })
1da177e4 LT	384	#define audit_log_vformat(b,f,a) do { ; } while (0)
	385	#define audit_log_format(b,f,...) do { ; } while (0)
	386	#define audit_log_end(b) do { ; } while (0)
83c7d091 DW	387	#define audit_log_hex(a,b,l) do { ; } while (0)
83c7d091 DW	388	#define audit_log_untrustedstring(a,s) do { ; } while (0)
1da177e4 LT	389	#define audit_log_d_path(b,p,d,v) do { ; } while (0)
	390	#endif
	391	#endif
	392	#endif