17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
581490fd2Sgww  * Common Development and Distribution License (the "License").
681490fd2Sgww  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
217c478bd9Sstevel@tonic-gate /*
22134a1f4eSCasper H.S. Dik  * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
237c478bd9Sstevel@tonic-gate  */
257c478bd9Sstevel@tonic-gate #ifndef _BSM_AUDIT_KERNEL_H
267c478bd9Sstevel@tonic-gate #define	_BSM_AUDIT_KERNEL_H
297c478bd9Sstevel@tonic-gate /*
307c478bd9Sstevel@tonic-gate  * This file contains the basic auditing control structure definitions.
317c478bd9Sstevel@tonic-gate  */
337c478bd9Sstevel@tonic-gate #include <c2/audit_kevents.h>
347c478bd9Sstevel@tonic-gate #include <sys/priv_impl.h>
357c478bd9Sstevel@tonic-gate #include <sys/taskq.h>
367c478bd9Sstevel@tonic-gate #include <sys/zone.h>
3881490fd2Sgww #include <sys/tsol/label.h>
407c478bd9Sstevel@tonic-gate #ifdef __cplusplus
417c478bd9Sstevel@tonic-gate extern "C" {
427c478bd9Sstevel@tonic-gate #endif
447c478bd9Sstevel@tonic-gate /*
457c478bd9Sstevel@tonic-gate  * This table contains the mapping from the system call ID to a corresponding
467c478bd9Sstevel@tonic-gate  * audit event.
477c478bd9Sstevel@tonic-gate  *
487c478bd9Sstevel@tonic-gate  *   au_init() is a function called at the beginning of the system call that
497c478bd9Sstevel@tonic-gate  *   performs any necessary setup/processing. It maps the call into the
507c478bd9Sstevel@tonic-gate  *   appropriate event, depending on the system call arguments. It is called
517c478bd9Sstevel@tonic-gate  *   by audit_start() from trap.c .
527c478bd9Sstevel@tonic-gate  *
537c478bd9Sstevel@tonic-gate  *   au_event is the audit event associated with the system call. Most of the
547c478bd9Sstevel@tonic-gate  *   time it will map directly from the system call i.e. There is one system
557c478bd9Sstevel@tonic-gate  *   call associated with the event. In some cases, such as shmsys, or open,
567c478bd9Sstevel@tonic-gate  *   the au_start() function will map the system call to more than one event,
577c478bd9Sstevel@tonic-gate  *   depending on the system call arguments.
587c478bd9Sstevel@tonic-gate  *
597c478bd9Sstevel@tonic-gate  *   au_start() is a function that provides per system call processing at the
607c478bd9Sstevel@tonic-gate  *   beginning of a system call. It is mainly concerned with preseving the
617c478bd9Sstevel@tonic-gate  *   audit record components that may be altered so that we can determine
627c478bd9Sstevel@tonic-gate  *   what the original paramater was before as well as after the system call.
637c478bd9Sstevel@tonic-gate  *   It is possible that au_start() may be taken away. It might be cleaner to
647c478bd9Sstevel@tonic-gate  *   define flags in au_ctrl to save a designated argument. For the moment we
657c478bd9Sstevel@tonic-gate  *   support both mechanisms, however the use of au_start() will be reviewed
667c478bd9Sstevel@tonic-gate  *   for 4.1.1 and CMW and ZEUS to see if such a general method is justified.
677c478bd9Sstevel@tonic-gate  *
687c478bd9Sstevel@tonic-gate  *   au_finish() is a function that provides per system call processing at the
697c478bd9Sstevel@tonic-gate  *   completion of a system call. In certain circumstances, the type of audit
707c478bd9Sstevel@tonic-gate  *   event depends on intermidiate results during the processing of the system
717c478bd9Sstevel@tonic-gate  *   call. It is called in audit_finish() from trap.c .
727c478bd9Sstevel@tonic-gate  *
737c478bd9Sstevel@tonic-gate  *   au_ctrl is a control vector that indicates what processing might have to
747c478bd9Sstevel@tonic-gate  *   be performed, even if there is no auditing for this system call. At
757c478bd9Sstevel@tonic-gate  *   present this is mostly for path processing for chmod, chroot. We need to
767c478bd9Sstevel@tonic-gate  *   process the path information in vfs_lookup, even when we are not auditing
777c478bd9Sstevel@tonic-gate  *   the system call in the case of chdir and chroot.
787c478bd9Sstevel@tonic-gate  */
797c478bd9Sstevel@tonic-gate /*
807c478bd9Sstevel@tonic-gate  * Defines for au_ctrl
817c478bd9Sstevel@tonic-gate  */
824a0fa546SMarek Pospisil #define	S2E_SP  TAD_SAVPATH	/* save path for later use */
834a0fa546SMarek Pospisil #define	S2E_MLD TAD_MLD		/* only one lookup per system call */
844a0fa546SMarek Pospisil #define	S2E_NPT TAD_NOPATH	/* force no path in audit record */
854a0fa546SMarek Pospisil #define	S2E_PUB TAD_PUBLIC_EV	/* syscall is defined as a public op */
877c478bd9Sstevel@tonic-gate /*
887c478bd9Sstevel@tonic-gate  * At present, we are using the audit classes imbedded with in the kernel. Each
897c478bd9Sstevel@tonic-gate  * event has a bit mask determining which classes the event is associated.
907c478bd9Sstevel@tonic-gate  * The table audit_e2s maps the audit event ID to the audit state.
917c478bd9Sstevel@tonic-gate  *
927c478bd9Sstevel@tonic-gate  * Note that this may change radically. If we use a bit vector for the audit
937c478bd9Sstevel@tonic-gate  * class, we can allow granularity at the event ID for each user. In this
947c478bd9Sstevel@tonic-gate  * case, the vector would be determined at user level and passed to the kernel
957c478bd9Sstevel@tonic-gate  * via the setaudit system call.
967c478bd9Sstevel@tonic-gate  */
987c478bd9Sstevel@tonic-gate /*
997c478bd9Sstevel@tonic-gate  * The audit_pad structure holds paths for the current root and directory
1007c478bd9Sstevel@tonic-gate  * for the process, as well as for open files and directly manipulated objects.
1017c478bd9Sstevel@tonic-gate  * The reference count minimizes data copies since the process's current
1027c478bd9Sstevel@tonic-gate  * directory changes very seldom.
1037c478bd9Sstevel@tonic-gate  */
1047c478bd9Sstevel@tonic-gate struct audit_path {
1057c478bd9Sstevel@tonic-gate 	uint_t		audp_ref;	/* reference count */
1067c478bd9Sstevel@tonic-gate 	uint_t		audp_size;	/* allocated size of this structure */
1077c478bd9Sstevel@tonic-gate 	uint_t		audp_cnt;	/* number of path sections */
1087c478bd9Sstevel@tonic-gate 	char		*audp_sect[1];	/* path section pointers */
1097c478bd9Sstevel@tonic-gate 					/* audp_sect[0] is the path name */
1107c478bd9Sstevel@tonic-gate 					/* audp_sect[1+] are attribute paths */
1117c478bd9Sstevel@tonic-gate };
1137c478bd9Sstevel@tonic-gate /*
1147c478bd9Sstevel@tonic-gate  * The structure of the terminal ID within the kernel is different from the
1157c478bd9Sstevel@tonic-gate  * terminal ID in user space. It is a combination of port and IP address.
1167c478bd9Sstevel@tonic-gate  */
1187c478bd9Sstevel@tonic-gate struct au_termid {
1197c478bd9Sstevel@tonic-gate 	dev_t	at_port;
1207c478bd9Sstevel@tonic-gate 	uint_t	at_type;
1217c478bd9Sstevel@tonic-gate 	uint_t	at_addr[4];
1227c478bd9Sstevel@tonic-gate };
1237c478bd9Sstevel@tonic-gate typedef struct au_termid au_termid_t;
1257c478bd9Sstevel@tonic-gate /*
1267c478bd9Sstevel@tonic-gate  * Attributes for deferring the queuing of an event.
1277c478bd9Sstevel@tonic-gate  */
1287c478bd9Sstevel@tonic-gate typedef struct au_defer_info {
1297c478bd9Sstevel@tonic-gate 	struct au_defer_info	*audi_next;	/* next on linked list */
1307c478bd9Sstevel@tonic-gate 	void	 *audi_ad;		/* audit record */
131d0fa49b7STony Nguyen 	au_event_t	audi_e_type;	/* audit event id */
132d0fa49b7STony Nguyen 	au_emod_t	audi_e_mod;	/* audit event modifier */
1337c478bd9Sstevel@tonic-gate 	int	audi_flag;		/* au_close*() flags */
1347c478bd9Sstevel@tonic-gate 	timestruc_t	audi_atime;	/* audit event timestamp */
1357c478bd9Sstevel@tonic-gate } au_defer_info_t;
1377c478bd9Sstevel@tonic-gate /*
1387c478bd9Sstevel@tonic-gate  * The structure p_audit_data hangs off of the process structure. It contains
1397c478bd9Sstevel@tonic-gate  * all of the audit information necessary to manage the audit record generation
1407c478bd9Sstevel@tonic-gate  * for each process.
1417c478bd9Sstevel@tonic-gate  *
1427c478bd9Sstevel@tonic-gate  * The pad_lock is constructed in the kmem_cache; the rest is combined
1437c478bd9Sstevel@tonic-gate  * in a sub structure so it can be copied/zeroed in one statement.
1447c478bd9Sstevel@tonic-gate  *
1457c478bd9Sstevel@tonic-gate  * The members have been reordered for maximum packing on 64 bit Solaris.
1467c478bd9Sstevel@tonic-gate  */
1477c478bd9Sstevel@tonic-gate struct p_audit_data {
1487c478bd9Sstevel@tonic-gate 	kmutex_t	pad_lock;	/* lock pad data during changes */
1497c478bd9Sstevel@tonic-gate 	struct _pad_data {
1507c478bd9Sstevel@tonic-gate 		struct audit_path	*pad_root;	/* process root path */
1517c478bd9Sstevel@tonic-gate 		struct audit_path	*pad_cwd;	/* process cwd path */
1527c478bd9Sstevel@tonic-gate 		au_mask_t		pad_newmask;	/* pending new mask */
1537c478bd9Sstevel@tonic-gate 		int			pad_flags;
1547c478bd9Sstevel@tonic-gate 	} pad_data;
1557c478bd9Sstevel@tonic-gate };
1567c478bd9Sstevel@tonic-gate typedef struct p_audit_data p_audit_data_t;
1587c478bd9Sstevel@tonic-gate #define	pad_root	pad_data.pad_root
1597c478bd9Sstevel@tonic-gate #define	pad_cwd		pad_data.pad_cwd
1607c478bd9Sstevel@tonic-gate #define	pad_newmask	pad_data.pad_newmask
1617c478bd9Sstevel@tonic-gate #define	pad_flags	pad_data.pad_flags
1637c478bd9Sstevel@tonic-gate /*
1644a0fa546SMarek Pospisil  * Defines for process audit flags (pad_flags)
1657c478bd9Sstevel@tonic-gate  */
1667c478bd9Sstevel@tonic-gate #define	PAD_SETMASK 	0x00000001	/* need to complete pending setmask */
1687c478bd9Sstevel@tonic-gate extern kmem_cache_t *au_pad_cache;
1707c478bd9Sstevel@tonic-gate /*
1714a0fa546SMarek Pospisil  * Defines for thread audit control/status flags (tad_ctrl)
1727c478bd9Sstevel@tonic-gate  */
1734a0fa546SMarek Pospisil #define	TAD_ABSPATH 	0x00000001	/* path from lookup is absolute */
1744a0fa546SMarek Pospisil #define	TAD_ATCALL	0x00000002	/* *at() syscall, like openat() */
1754a0fa546SMarek Pospisil #define	TAD_ATTPATH  	0x00000004	/* attribute file lookup */
1764a0fa546SMarek Pospisil #define	TAD_CORE	0x00000008	/* save attribute during core dump */
1774a0fa546SMarek Pospisil #define	TAD_ERRJMP	0x00000010	/* abort record generation on error */
1784a0fa546SMarek Pospisil #define	TAD_MLD		0x00000020	/* system call involves MLD */
1794a0fa546SMarek Pospisil #define	TAD_NOATTRB 	0x00000040	/* do not automatically add attribute */
1804a0fa546SMarek Pospisil #define	TAD_NOAUDIT 	0x00000080	/* discard audit record */
1814a0fa546SMarek Pospisil #define	TAD_NOPATH  	0x00000100	/* force no paths in audit record */
1824a0fa546SMarek Pospisil #define	TAD_PATHFND 	0x00000200	/* found path, don't retry lookup */
1834a0fa546SMarek Pospisil #define	TAD_PUBLIC_EV	0x00000400	/* syscall is defined as a public op */
1844a0fa546SMarek Pospisil #define	TAD_SAVPATH 	0x00000800	/* save path for further processing */
1854a0fa546SMarek Pospisil #define	TAD_TRUE_CREATE 0x00001000	/* true create, file not found */
1877c478bd9Sstevel@tonic-gate /*
1887c478bd9Sstevel@tonic-gate  * The structure t_audit_data hangs off of the thread structure. It contains
1897c478bd9Sstevel@tonic-gate  * all of the audit information necessary to manage the audit record generation
1907c478bd9Sstevel@tonic-gate  * for each thread.
1917c478bd9Sstevel@tonic-gate  *
1927c478bd9Sstevel@tonic-gate  */
1947c478bd9Sstevel@tonic-gate struct t_audit_data {
1957c478bd9Sstevel@tonic-gate 	kthread_id_t  tad_thread;	/* DEBUG pointer to parent thread */
1967c478bd9Sstevel@tonic-gate 	unsigned int  tad_scid;		/* system call ID for finish */
197d0fa49b7STony Nguyen 	au_event_t	tad_event;	/* event for audit record */
198d0fa49b7STony Nguyen 	au_emod_t	tad_evmod;	/* event modifier for audit record */
1997c478bd9Sstevel@tonic-gate 	int	tad_ctrl;	/* audit control/status flags */
2007c478bd9Sstevel@tonic-gate 	void	*tad_errjmp;	/* error longjmp (audit record aborted) */
2017c478bd9Sstevel@tonic-gate 	int	tad_flag;	/* to audit or not to audit */
202005d3febSMarek Pospisil 	uint32_t tad_audit;	/* auditing enabled/disabled */
2037c478bd9Sstevel@tonic-gate 	struct audit_path	*tad_aupath;	/* captured at vfs_lookup */
2047c478bd9Sstevel@tonic-gate 	struct audit_path	*tad_atpath;	/* openat prefix, path of fd */
2057c478bd9Sstevel@tonic-gate 	caddr_t tad_ad;		/* base of accumulated audit data */
2067c478bd9Sstevel@tonic-gate 	au_defer_info_t	*tad_defer_head;	/* queue of records to defer */
2077c478bd9Sstevel@tonic-gate 						/* until syscall end: */
2087c478bd9Sstevel@tonic-gate 	au_defer_info_t	*tad_defer_tail;	/* tail of defer queue */
2097c478bd9Sstevel@tonic-gate 	priv_set_t tad_sprivs;	/* saved (success) used privs */
2107c478bd9Sstevel@tonic-gate 	priv_set_t tad_fprivs;	/* saved (failed) used privs */
2117c478bd9Sstevel@tonic-gate };
2127c478bd9Sstevel@tonic-gate typedef struct t_audit_data t_audit_data_t;
2147c478bd9Sstevel@tonic-gate /*
2157c478bd9Sstevel@tonic-gate  * The f_audit_data structure hangs off of the file structure. It contains
2167c478bd9Sstevel@tonic-gate  * three fields of data. The audit ID, the audit state, and a path name.
2177c478bd9Sstevel@tonic-gate  */
2197c478bd9Sstevel@tonic-gate struct f_audit_data {
2207c478bd9Sstevel@tonic-gate 	kthread_id_t	fad_thread;	/* DEBUG creating thread */
2217c478bd9Sstevel@tonic-gate 	int		fad_flags;	/* audit control flags */
2227c478bd9Sstevel@tonic-gate 	struct audit_path	*fad_aupath;	/* path from vfs_lookup */
2237c478bd9Sstevel@tonic-gate };
2247c478bd9Sstevel@tonic-gate typedef struct f_audit_data f_audit_data_t;
2267c478bd9Sstevel@tonic-gate #define	FAD_READ	0x0001		/* read system call seen */
2277c478bd9Sstevel@tonic-gate #define	FAD_WRITE	0x0002		/* write system call seen */
2297c478bd9Sstevel@tonic-gate #define	P2A(p)	(p->p_audit_data)
2307c478bd9Sstevel@tonic-gate #define	T2A(t)	(t->t_audit_data)
2317c478bd9Sstevel@tonic-gate #define	U2A(u)	(curthread->t_audit_data)
2327c478bd9Sstevel@tonic-gate #define	F2A(f)	(f->f_audit_data)
2347c478bd9Sstevel@tonic-gate #define	u_ad    ((U2A(u))->tad_ad)
2357c478bd9Sstevel@tonic-gate #define	ad_ctrl ((U2A(u))->tad_ctrl)
2367c478bd9Sstevel@tonic-gate #define	ad_flag ((U2A(u))->tad_flag)
2387c478bd9Sstevel@tonic-gate #define	AU_BUFSIZE	128		/* buffer size for the buffer pool */
2407c478bd9Sstevel@tonic-gate struct au_buff {
2417c478bd9Sstevel@tonic-gate 	char		buf[AU_BUFSIZE];
2427c478bd9Sstevel@tonic-gate 	struct au_buff	*next_buf;
2437c478bd9Sstevel@tonic-gate 	struct au_buff	*next_rec;
2447c478bd9Sstevel@tonic-gate 	ushort_t	rec_len;
2457c478bd9Sstevel@tonic-gate 	uchar_t		len;
2467c478bd9Sstevel@tonic-gate 	uchar_t		flag;
2477c478bd9Sstevel@tonic-gate };
2497c478bd9Sstevel@tonic-gate typedef struct au_buff au_buff_t;
2517c478bd9Sstevel@tonic-gate /*
2527c478bd9Sstevel@tonic-gate  * Kernel audit queue structure.
2537c478bd9Sstevel@tonic-gate  */
2547c478bd9Sstevel@tonic-gate struct audit_queue {
2557c478bd9Sstevel@tonic-gate 	au_buff_t *head;	/* head of queue */
2567c478bd9Sstevel@tonic-gate 	au_buff_t *tail;	/* tail of queue */
2577c478bd9Sstevel@tonic-gate 	ssize_t	cnt;		/* number elements on queue */
2587c478bd9Sstevel@tonic-gate 	size_t	hiwater;	/* high water mark to block */
2597c478bd9Sstevel@tonic-gate 	size_t	lowater;	/* low water mark to restart */
2607c478bd9Sstevel@tonic-gate 	size_t	bufsz;		/* audit trail write buffer size */
2617c478bd9Sstevel@tonic-gate 	size_t	buflen;		/* audit trail buffer length in use */
2627c478bd9Sstevel@tonic-gate 	clock_t	delay;		/* delay before flushing queue */
2637c478bd9Sstevel@tonic-gate 	int	wt_block;	/* writer is blocked (1) */
2647c478bd9Sstevel@tonic-gate 	int	rd_block;	/* reader is blocked (1) */
2657c478bd9Sstevel@tonic-gate 	kmutex_t lock;		/* mutex lock for queue modification */
2667c478bd9Sstevel@tonic-gate 	kcondvar_t write_cv;	/* sleep structure for write block */
2677c478bd9Sstevel@tonic-gate 	kcondvar_t read_cv;	/* sleep structure for read block */
2687c478bd9Sstevel@tonic-gate };
2717c478bd9Sstevel@tonic-gate union rval;
2727c478bd9Sstevel@tonic-gate struct audit_s2e {
2737c478bd9Sstevel@tonic-gate 	au_event_t (*au_init)(au_event_t);
2747c478bd9Sstevel@tonic-gate 				/* convert au_event to real audit event ID */
2767c478bd9Sstevel@tonic-gate 	int au_event;		/* default audit event for this system call */
2777c478bd9Sstevel@tonic-gate 	void (*au_start)(struct t_audit_data *);
2787c478bd9Sstevel@tonic-gate 				/* pre-system call audit processing */
2797c478bd9Sstevel@tonic-gate 	void (*au_finish)(struct t_audit_data *, int, union rval *);
2807c478bd9Sstevel@tonic-gate 				/* post-system call audit processing */
2817c478bd9Sstevel@tonic-gate 	int au_ctrl;		/* control flags for auditing actions */
2827c478bd9Sstevel@tonic-gate };
2847c478bd9Sstevel@tonic-gate extern struct audit_s2e audit_s2e[];
2867c478bd9Sstevel@tonic-gate #define	AUK_VALID	0x5A5A5A5A
2877c478bd9Sstevel@tonic-gate #define	AUK_INVALID	0
2887c478bd9Sstevel@tonic-gate /*
2897c478bd9Sstevel@tonic-gate  * per zone audit context
2907c478bd9Sstevel@tonic-gate  */
2917c478bd9Sstevel@tonic-gate struct au_kcontext {
2927c478bd9Sstevel@tonic-gate 	uint32_t		auk_valid;
2937c478bd9Sstevel@tonic-gate 	zoneid_t		auk_zid;
2957c478bd9Sstevel@tonic-gate 	boolean_t		auk_hostaddr_valid;
2967c478bd9Sstevel@tonic-gate 	int			auk_sequence;
2977c478bd9Sstevel@tonic-gate 	int			auk_auditstate;
2987c478bd9Sstevel@tonic-gate 	int			auk_output_active;
2997c478bd9Sstevel@tonic-gate 	struct vnode		*auk_current_vp;
30096093503SMarek Pospisil 	uint32_t		auk_policy;
3027c478bd9Sstevel@tonic-gate 	struct audit_queue	auk_queue;
3047c478bd9Sstevel@tonic-gate 	au_dbuf_t		*auk_dbuffer;	/* auditdoor output */
3067c478bd9Sstevel@tonic-gate 	au_stat_t		auk_statistics;
308*f8994074SJan Friedel 	k_auditinfo_addr_t	auk_info;
3097c478bd9Sstevel@tonic-gate 	kmutex_t		auk_eagain_mutex; /* door call retry */
3107c478bd9Sstevel@tonic-gate 	kcondvar_t		auk_eagain_cv;
3127c478bd9Sstevel@tonic-gate 	taskq_t			*auk_taskq;	/* output thread */
3147c478bd9Sstevel@tonic-gate 	/* Only one audit svc per zone at a time */
315787b48eaSgww 	/* With the elimination of auditsvc, can this also go? see 6648414 */
3167c478bd9Sstevel@tonic-gate 	kmutex_t 		auk_svc_lock;
318d31ffe99Srica 	au_state_t		auk_ets[MAX_KEVENTS + 1];
3197c478bd9Sstevel@tonic-gate };
3207c478bd9Sstevel@tonic-gate #ifndef AUK_CONTEXT_T
3217c478bd9Sstevel@tonic-gate #define	AUK_CONTEXT_T
3227c478bd9Sstevel@tonic-gate typedef struct au_kcontext au_kcontext_t;
3237c478bd9Sstevel@tonic-gate #endif
3257c478bd9Sstevel@tonic-gate extern zone_key_t au_zone_key;
3277c478bd9Sstevel@tonic-gate /*
3287c478bd9Sstevel@tonic-gate  * Kernel auditing external variables
3297c478bd9Sstevel@tonic-gate  */
33096093503SMarek Pospisil extern uint32_t audit_policy;
3317c478bd9Sstevel@tonic-gate extern int audit_active;
3337c478bd9Sstevel@tonic-gate extern struct audit_queue au_queue;
3347c478bd9Sstevel@tonic-gate extern struct p_audit_data *pad0;
3357c478bd9Sstevel@tonic-gate extern struct t_audit_data *tad0;
3377c478bd9Sstevel@tonic-gate /*
3387c478bd9Sstevel@tonic-gate  * audit_path support routines
3397c478bd9Sstevel@tonic-gate  */
3407c478bd9Sstevel@tonic-gate void au_pathhold(struct audit_path *);
3417c478bd9Sstevel@tonic-gate void au_pathrele(struct audit_path *);
3427c478bd9Sstevel@tonic-gate struct audit_path *au_pathdup(const struct audit_path *, int, int);
344005d3febSMarek Pospisil void au_pad_init(void);
345005d3febSMarek Pospisil 
346005d3febSMarek Pospisil int auditctl(int cmd, caddr_t data, int length);
347005d3febSMarek Pospisil int auditdoor(int fd);
348005d3febSMarek Pospisil int getauid(caddr_t);
349005d3febSMarek Pospisil int setauid(caddr_t);
350005d3febSMarek Pospisil int getaudit(caddr_t);
351005d3febSMarek Pospisil int getaudit_addr(caddr_t, int);
352005d3febSMarek Pospisil int setaudit(caddr_t);
353005d3febSMarek Pospisil int setaudit_addr(caddr_t, int);
354005d3febSMarek Pospisil 
3557c478bd9Sstevel@tonic-gate /*
3567c478bd9Sstevel@tonic-gate  * Macros to hide asynchronous, non-blocking audit record start and finish
3577c478bd9Sstevel@tonic-gate  * processing.
3587c478bd9Sstevel@tonic-gate  *
3597c478bd9Sstevel@tonic-gate  * NOTE: must be used in (void) funcction () { ... }
3607c478bd9Sstevel@tonic-gate  */
3627c478bd9Sstevel@tonic-gate #define	AUDIT_ASYNC_START(rp, audit_event, sorf) \
3637c478bd9Sstevel@tonic-gate { \
3647c478bd9Sstevel@tonic-gate 	label_t jb; \
3657c478bd9Sstevel@tonic-gate 	if (setjmp(&jb)) { \
3667c478bd9Sstevel@tonic-gate 		/* cleanup any residual audit data */ \
3677c478bd9Sstevel@tonic-gate 		audit_async_drop((caddr_t *)&(rp), 0); \
3687c478bd9Sstevel@tonic-gate 		return; \
3697c478bd9Sstevel@tonic-gate 	} \
3707c478bd9Sstevel@tonic-gate 	/* auditing enabled and we're preselected for this event? */ \
3717c478bd9Sstevel@tonic-gate 	if (audit_async_start(&jb, audit_event, sorf)) { \
3727c478bd9Sstevel@tonic-gate 		return; \
3737c478bd9Sstevel@tonic-gate 	} \
3747c478bd9Sstevel@tonic-gate }
376005d3febSMarek Pospisil #define	AUDIT_ASYNC_FINISH(rp, audit_event, event_modifier, event_time) \
377005d3febSMarek Pospisil 	audit_async_finish((caddr_t *)&(rp), audit_event, event_modifier, \
378005d3febSMarek Pospisil 	event_time);
3817c478bd9Sstevel@tonic-gate #ifdef	_KERNEL
3827c478bd9Sstevel@tonic-gate au_buff_t *au_get_buff(void), *au_free_buff(au_buff_t *);
3837c478bd9Sstevel@tonic-gate #endif
3857c478bd9Sstevel@tonic-gate /*
38681490fd2Sgww  * Macro for uniform "subject" token(s) generation
3877c478bd9Sstevel@tonic-gate  */
38889581a11Sjf #define	AUDIT_SETSUBJ_GENERIC(u, c, a, k, p)		\
38989581a11Sjf 	(au_write((u), au_to_subject(crgetuid(c),	\
39089581a11Sjf 	    crgetgid(c), crgetruid(c), crgetrgid(c),	\
39189581a11Sjf 	    p, (a)->ai_auid, (a)->ai_asid,		\
39289581a11Sjf 	    &((a)->ai_termid))));			\
39389581a11Sjf 	((is_system_labeled()) ?  au_write((u),		\
39489581a11Sjf 	    au_to_label(CR_SL((c)))) : (void) 0);	\
39589581a11Sjf 	(((k)->auk_policy & AUDIT_GROUP) ? au_write((u),\
39689581a11Sjf 	    au_to_groups(crgetgroups(c),		\
39789581a11Sjf 	    crgetngroups(c))) : (void) 0)
3991d7bfecdStz #define	AUDIT_SETSUBJ(u, c, a, k)      		\
4001d7bfecdStz 	AUDIT_SETSUBJ_GENERIC(u, c, a, k, curproc->p_pid)
402134a1f4eSCasper H.S. Dik #define	AUDIT_SETPROC_GENERIC(u, c, a, p)		\
403134a1f4eSCasper H.S. Dik 	(au_write((u), au_to_process(crgetuid(c),	\
404134a1f4eSCasper H.S. Dik 	    crgetgid(c), crgetruid(c), crgetrgid(c),	\
405134a1f4eSCasper H.S. Dik 	    p, (a)->ai_auid, (a)->ai_asid,		\
406134a1f4eSCasper H.S. Dik 	    &((a)->ai_termid))));
407134a1f4eSCasper H.S. Dik 
408134a1f4eSCasper H.S. Dik #define	AUDIT_SETPROC(u, c, a)      		\
409134a1f4eSCasper H.S. Dik 	AUDIT_SETPROC_GENERIC(u, c, a, curproc->p_pid)
410134a1f4eSCasper H.S. Dik 
4117c478bd9Sstevel@tonic-gate /*
4127c478bd9Sstevel@tonic-gate  * Macros for type conversion
4137c478bd9Sstevel@tonic-gate  */
4157c478bd9Sstevel@tonic-gate /* au_membuf head, to typed data */
4167c478bd9Sstevel@tonic-gate #define	memtod(x, t)	((t)x->buf)
4187c478bd9Sstevel@tonic-gate /* au_membuf types */
4197c478bd9Sstevel@tonic-gate #define	MT_FREE		0	/* should be on free list */
4207c478bd9Sstevel@tonic-gate #define	MT_DATA		1	/* dynamic (data) allocation */
4227c478bd9Sstevel@tonic-gate /* flags to au_memget */
4237c478bd9Sstevel@tonic-gate #define	DONTWAIT	0
4247c478bd9Sstevel@tonic-gate #define	WAIT		1
4267c478bd9Sstevel@tonic-gate #define	AU_PACK	1	/* pack data in au_append_rec() */
4277c478bd9Sstevel@tonic-gate #define	AU_LINK 0	/* link data in au_append_rec() */
4297c478bd9Sstevel@tonic-gate /* flags to async routines */
4307c478bd9Sstevel@tonic-gate #define	AU_BACKEND	1	/* called from softcall backend */
4327c478bd9Sstevel@tonic-gate #ifdef __cplusplus
4337c478bd9Sstevel@tonic-gate }
4347c478bd9Sstevel@tonic-gate #endif
4367c478bd9Sstevel@tonic-gate #endif /* _BSM_AUDIT_KERNEL_H */