proc->thread stage 4: rework the VFS and DEVICE subsystems to take thread
[dragonfly.git] / sys / sys / ktrace.h
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1/*
2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)ktrace.h 8.1 (Berkeley) 6/2/93
34 * $FreeBSD: src/sys/sys/ktrace.h,v 1.19.2.3 2001/01/06 09:58:23 alfred Exp $
dadab5e9 35 * $DragonFly: src/sys/sys/ktrace.h,v 1.3 2003/06/25 03:56:10 dillon Exp $
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36 */
37
38#ifndef _SYS_KTRACE_H_
39#define _SYS_KTRACE_H_
40
41/*
42 * operations to ktrace system call (KTROP(op))
43 */
44#define KTROP_SET 0 /* set trace points */
45#define KTROP_CLEAR 1 /* clear trace points */
46#define KTROP_CLEARFILE 2 /* stop all tracing to file */
47#define KTROP(o) ((o)&3) /* macro to extract operation */
48/*
49 * flags (ORed in with operation)
50 */
51#define KTRFLAG_DESCEND 4 /* perform op on all children too */
52
53/*
54 * ktrace record header
55 */
56struct ktr_header {
57 int ktr_len; /* length of buf */
58 short ktr_type; /* trace record type */
59 pid_t ktr_pid; /* process id */
60 char ktr_comm[MAXCOMLEN+1]; /* command name */
61 struct timeval ktr_time; /* timestamp */
62 caddr_t ktr_buf;
63};
64
65/*
66 * Test for kernel trace point (MP SAFE)
67 */
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68#define KTRPOINT(td, type) \
69 ((td->td_proc) && (((td)->td_proc->p_traceflag & ((1<<(type))|KTRFAC_ACTIVE)) == (1<<(type))))
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70
71/*
72 * ktrace record types
73 */
74
75/*
76 * KTR_SYSCALL - system call record
77 */
78#define KTR_SYSCALL 1
79struct ktr_syscall {
80 short ktr_code; /* syscall number */
81 short ktr_narg; /* number of arguments */
82 /*
83 * followed by ktr_narg register_t
84 */
85 register_t ktr_args[1];
86};
87
88/*
89 * KTR_SYSRET - return from system call record
90 */
91#define KTR_SYSRET 2
92struct ktr_sysret {
93 short ktr_code;
94 short ktr_eosys;
95 int ktr_error;
96 register_t ktr_retval;
97};
98
99/*
100 * KTR_NAMEI - namei record
101 */
102#define KTR_NAMEI 3
103 /* record contains pathname */
104
105/*
106 * KTR_GENIO - trace generic process i/o
107 */
108#define KTR_GENIO 4
109struct ktr_genio {
110 int ktr_fd;
111 enum uio_rw ktr_rw;
112 /*
113 * followed by data successfully read/written
114 */
115};
116
117/*
118 * KTR_PSIG - trace processed signal
119 */
120#define KTR_PSIG 5
121struct ktr_psig {
122 int signo;
123 sig_t action;
124 int code;
125 sigset_t mask;
126};
127
128/*
129 * KTR_CSW - trace context switches
130 */
131#define KTR_CSW 6
132struct ktr_csw {
133 int out; /* 1 if switch out, 0 if switch in */
134 int user; /* 1 if usermode (ivcsw), 0 if kernel (vcsw) */
135};
136
137/*
138 * KTR_USER - data comming from userland
139 */
140#define KTR_USER_MAXLEN 2048 /* maximum length of passed data */
141#define KTR_USER 7
142
143/*
144 * kernel trace points (in p_traceflag)
145 */
146#define KTRFAC_MASK 0x00ffffff
147#define KTRFAC_SYSCALL (1<<KTR_SYSCALL)
148#define KTRFAC_SYSRET (1<<KTR_SYSRET)
149#define KTRFAC_NAMEI (1<<KTR_NAMEI)
150#define KTRFAC_GENIO (1<<KTR_GENIO)
151#define KTRFAC_PSIG (1<<KTR_PSIG)
152#define KTRFAC_CSW (1<<KTR_CSW)
153#define KTRFAC_USER (1<<KTR_USER)
154/*
155 * trace flags (also in p_traceflags)
156 */
157#define KTRFAC_ROOT 0x80000000 /* root set this trace */
158#define KTRFAC_INHERIT 0x40000000 /* pass trace flags to children */
159#define KTRFAC_ACTIVE 0x20000000 /* ktrace logging in progress, ignore */
160
161#ifdef _KERNEL
162void ktrnamei __P((struct vnode *,char *));
163void ktrcsw __P((struct vnode *,int,int));
164void ktrpsig __P((struct vnode *, int, sig_t, sigset_t *, int));
165void ktrgenio __P((struct vnode *, int, enum uio_rw, struct uio *, int));
166void ktrsyscall __P((struct vnode *, int, int narg, register_t args[]));
167void ktrsysret __P((struct vnode *, int, int, register_t));
168
169#else
170
171#include <sys/cdefs.h>
172
173__BEGIN_DECLS
174int ktrace __P((const char *, int, int, pid_t));
175int utrace __P((const void *, size_t));
176__END_DECLS
177
178#endif
179
180#endif