dtrace_cddl.h revision 1.2 
1/*	$NetBSD: dtrace_cddl.h,v 1.2 2010/02/21 01:46:33 darran Exp $	*/
2
3/*
4 * CDDL HEADER START
5 *
6 * The contents of this file are subject to the terms of the
7 * Common Development and Distribution License (the "License").
8 * You may not use this file except in compliance with the License.
9 *
10 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
11 * or http://www.opensolaris.org/os/licensing.
12 * See the License for the specific language governing permissions
13 * and limitations under the License.
14 *
15 * When distributing Covered Code, include this CDDL HEADER in each
16 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
17 * If applicable, add the following below this CDDL HEADER, with the
18 * fields enclosed by brackets "[]" replaced with your own identifying
19 * information: Portions Copyright [yyyy] [name of copyright owner]
20 *
21 * CDDL HEADER END
22 *
23 * $FreeBSD: src/sys/cddl/dev/dtrace/dtrace_cddl.h,v 1.1.4.1 2009/08/03 08:13:06 kensmith Exp $
24 *
25 */
26
27#ifndef _DTRACE_CDDL_H_
28#define	_DTRACE_CDDL_H_
29
30#include <sys/proc.h>
31
32#define LOCK_LEVEL	10
33
34/*
35 * Kernel DTrace extension to 'struct proc' for FreeBSD.
36 */
37typedef struct kdtrace_proc {
38	int		p_dtrace_probes;	/* Are there probes for this proc? */
39	u_int64_t	p_dtrace_count;		/* Number of DTrace tracepoints */
40	void		*p_dtrace_helpers;	/* DTrace helpers, if any */
41
42} kdtrace_proc_t;
43
44/*
45 * Kernel DTrace extension to 'struct thread' for FreeBSD.
46 */
47typedef struct kdtrace_thread {
48	u_int8_t	td_dtrace_stop;	/* Indicates a DTrace-desired stop */
49	u_int8_t	td_dtrace_sig;	/* Signal sent via DTrace's raise() */
50	u_int		td_predcache;	/* DTrace predicate cache */
51	u_int64_t	td_dtrace_vtime; /* DTrace virtual time */
52	u_int64_t	td_dtrace_start; /* DTrace slice start time */
53
54	union __tdu {
55		struct __tds {
56			u_int8_t	_td_dtrace_on;
57					/* Hit a fasttrap tracepoint. */
58			u_int8_t	_td_dtrace_step;
59					/* About to return to kernel. */
60			u_int8_t	_td_dtrace_ret;
61					/* Handling a return probe. */
62			u_int8_t	_td_dtrace_ast;
63					/* Saved ast flag. */
64		} _tds;
65		u_long	_td_dtrace_ft;	/* Bitwise or of these flags. */
66	} _tdu;
67#define	td_dtrace_ft	_tdu._td_dtrace_ft
68#define	td_dtrace_on	_tdu._tds._td_dtrace_on
69#define	td_dtrace_step	_tdu._tds._td_dtrace_step
70#define	td_dtrace_ret	_tdu._tds._td_dtrace_ret
71#define	td_dtrace_ast	_tdu._tds._td_dtrace_ast
72
73	uintptr_t	td_dtrace_pc;	/* DTrace saved pc from fasttrap. */
74	uintptr_t	td_dtrace_npc;	/* DTrace next pc from fasttrap. */
75	uintptr_t	td_dtrace_scrpc;
76					/* DTrace per-thread scratch location. */
77	uintptr_t	td_dtrace_astpc;
78					/* DTrace return sequence location. */
79	u_int64_t	td_hrtime;	/* Last time on cpu. */
80	int		td_errno;	/* Syscall return value. */
81} kdtrace_thread_t;
82
83/*
84 * Definitions to reference fields in the FreeBSD DTrace structures defined
85 * above using the names of fields in similar structures in Solaris. Note
86 * that the separation on FreeBSD is a licensing constraint designed to
87 * keep the GENERIC kernel BSD licensed.
88 */
89#define	t_dtrace_vtime	l_dtrace->td_dtrace_vtime
90#define	t_dtrace_start	l_dtrace->td_dtrace_start
91#define	t_dtrace_stop	l_dtrace->td_dtrace_stop
92#define	t_dtrace_sig	l_dtrace->td_dtrace_sig
93#define	t_predcache	l_dtrace->td_predcache
94#define p_dtrace_helpers	p_dtrace->p_dtrace_helpers
95
96/*
97 * Definitions for fields in struct proc which are named differntly in FreeBSD.
98 */
99//#define	p_cred		p_ucred
100#define	p_parent	p_pptr
101
102/*
103 * Definitions for fields in struct thread which are named differntly in NetBSD.
104 */
105#define	t_procp		l_proc
106#define	t_tid		l_lid
107#define	t_did		l_lid
108
109
110int priv_policy(const cred_t *, int, boolean_t, int, const char *);
111boolean_t priv_policy_only(const cred_t *, int, boolean_t);
112boolean_t priv_policy_choice(const cred_t *, int, boolean_t);
113
114/*
115 * Test privilege. Audit success or failure, allow privilege debugging.
116 * Returns 0 for success, err for failure.
117 */
118#define	PRIV_POLICY(cred, priv, all, err, reason) \
119		priv_policy((cred), (priv), (all), (err), (reason))
120
121/*
122 * Test privilege. Audit success only, no privilege debugging.
123 * Returns 1 for success, and 0 for failure.
124 */
125#define	PRIV_POLICY_CHOICE(cred, priv, all) \
126		priv_policy_choice((cred), (priv), (all))
127
128/*
129 * Test privilege. No priv_debugging, no auditing.
130 * Returns 1 for success, and 0 for failure.
131 */
132
133#define	PRIV_POLICY_ONLY(cred, priv, all) \
134		priv_policy_only((cred), (priv), (all))
135
136#endif	/* !_DTRACE_CDDL_H_ */
137