dtrace_cddl.h revision 268578 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 *
21 * $FreeBSD: stable/10/sys/cddl/dev/dtrace/dtrace_cddl.h 268578 2014-07-12 22:56:41Z rpaulo $
22 *
23 */
24
25#ifndef _DTRACE_CDDL_H_
26#define	_DTRACE_CDDL_H_
27
28#include <sys/proc.h>
29
30#define LOCK_LEVEL	10
31
32/*
33 * Kernel DTrace extension to 'struct proc' for FreeBSD.
34 */
35typedef struct kdtrace_proc {
36	int		p_dtrace_probes;	/* Are there probes for this proc? */
37	u_int64_t	p_dtrace_count;		/* Number of DTrace tracepoints */
38	void		*p_dtrace_helpers;	/* DTrace helpers, if any */
39	int		p_dtrace_model;
40
41} kdtrace_proc_t;
42
43/*
44 * Kernel DTrace extension to 'struct thread' for FreeBSD.
45 */
46typedef struct kdtrace_thread {
47	u_int8_t	td_dtrace_stop;	/* Indicates a DTrace-desired stop */
48	u_int8_t	td_dtrace_sig;	/* Signal sent via DTrace's raise() */
49	u_int		td_predcache;	/* DTrace predicate cache */
50	u_int64_t	td_dtrace_vtime; /* DTrace virtual time */
51	u_int64_t	td_dtrace_start; /* DTrace slice start time */
52
53	union __tdu {
54		struct __tds {
55			u_int8_t	_td_dtrace_on;
56					/* Hit a fasttrap tracepoint. */
57			u_int8_t	_td_dtrace_step;
58					/* About to return to kernel. */
59			u_int8_t	_td_dtrace_ret;
60					/* Handling a return probe. */
61			u_int8_t	_td_dtrace_ast;
62					/* Saved ast flag. */
63#ifdef __amd64__
64			u_int8_t	_td_dtrace_reg;
65#endif
66		} _tds;
67		u_long	_td_dtrace_ft;	/* Bitwise or of these flags. */
68	} _tdu;
69#define	td_dtrace_ft	_tdu._td_dtrace_ft
70#define	td_dtrace_on	_tdu._tds._td_dtrace_on
71#define	td_dtrace_step	_tdu._tds._td_dtrace_step
72#define	td_dtrace_ret	_tdu._tds._td_dtrace_ret
73#define	td_dtrace_ast	_tdu._tds._td_dtrace_ast
74#define	td_dtrace_reg	_tdu._tds._td_dtrace_reg
75
76	uintptr_t	td_dtrace_pc;	/* DTrace saved pc from fasttrap. */
77	uintptr_t	td_dtrace_npc;	/* DTrace next pc from fasttrap. */
78	uintptr_t	td_dtrace_scrpc;
79					/* DTrace per-thread scratch location. */
80	uintptr_t	td_dtrace_astpc;
81					/* DTrace return sequence location. */
82#ifdef __amd64__
83	uintptr_t	td_dtrace_regv;
84#endif
85	u_int64_t	td_hrtime;	/* Last time on cpu. */
86	int		td_errno;	/* Syscall return value. */
87} kdtrace_thread_t;
88
89/*
90 * Definitions to reference fields in the FreeBSD DTrace structures defined
91 * above using the names of fields in similar structures in Solaris. Note
92 * that the separation on FreeBSD is a licensing constraint designed to
93 * keep the GENERIC kernel BSD licensed.
94 */
95#define	t_dtrace_vtime	td_dtrace->td_dtrace_vtime
96#define	t_dtrace_start	td_dtrace->td_dtrace_start
97#define	t_dtrace_stop	td_dtrace->td_dtrace_stop
98#define	t_dtrace_sig	td_dtrace->td_dtrace_sig
99#define	t_predcache	td_dtrace->td_predcache
100#define	t_dtrace_ft	td_dtrace->td_dtrace_ft
101#define	t_dtrace_on	td_dtrace->td_dtrace_on
102#define	t_dtrace_step	td_dtrace->td_dtrace_step
103#define	t_dtrace_ret	td_dtrace->td_dtrace_ret
104#define	t_dtrace_ast	td_dtrace->td_dtrace_ast
105#define	t_dtrace_reg	td_dtrace->td_dtrace_reg
106#define	t_dtrace_pc	td_dtrace->td_dtrace_pc
107#define	t_dtrace_npc	td_dtrace->td_dtrace_npc
108#define	t_dtrace_scrpc	td_dtrace->td_dtrace_scrpc
109#define	t_dtrace_astpc	td_dtrace->td_dtrace_astpc
110#define	t_dtrace_regv	td_dtrace->td_dtrace_regv
111#define	p_dtrace_helpers	p_dtrace->p_dtrace_helpers
112#define	p_dtrace_count	p_dtrace->p_dtrace_count
113#define	p_dtrace_probes	p_dtrace->p_dtrace_probes
114#define	p_model		p_dtrace->p_dtrace_model
115#define	DATAMODEL_NATIVE	0
116#ifdef __amd64__
117#define	DATAMODEL_LP64		0
118#define	DATAMODEL_ILP32		1
119#else
120#define	DATAMODEL_LP64		1
121#define	DATAMODEL_ILP32		0
122#endif
123
124/*
125 * Definitions for fields in struct proc which are named differently in FreeBSD.
126 */
127#define	p_cred		p_ucred
128#define	p_parent	p_pptr
129
130/*
131 * Definitions for fields in struct thread which are named differently in FreeBSD.
132 */
133#define	t_procp		td_proc
134#define	t_tid		td_tid
135#define	t_did		td_tid
136#define	t_cred		td_ucred
137
138
139int priv_policy(const cred_t *, int, boolean_t, int, const char *);
140boolean_t priv_policy_only(const cred_t *, int, boolean_t);
141boolean_t priv_policy_choice(const cred_t *, int, boolean_t);
142
143/*
144 * Test privilege. Audit success or failure, allow privilege debugging.
145 * Returns 0 for success, err for failure.
146 */
147#define	PRIV_POLICY(cred, priv, all, err, reason) \
148		priv_policy((cred), (priv), (all), (err), (reason))
149
150/*
151 * Test privilege. Audit success only, no privilege debugging.
152 * Returns 1 for success, and 0 for failure.
153 */
154#define	PRIV_POLICY_CHOICE(cred, priv, all) \
155		priv_policy_choice((cred), (priv), (all))
156
157/*
158 * Test privilege. No priv_debugging, no auditing.
159 * Returns 1 for success, and 0 for failure.
160 */
161
162#define	PRIV_POLICY_ONLY(cred, priv, all) \
163		priv_policy_only((cred), (priv), (all))
164
165#endif	/* !_DTRACE_CDDL_H_ */
166