FreeBSD/Linux Kernel Cross Reference
sys/sys/ktrace.h
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 * $FreeBSD$
35 */
36
37 #ifndef _SYS_KTRACE_H_
38 #define _SYS_KTRACE_H_
39
40 /*
41 * operations to ktrace system call (KTROP(op))
42 */
43 #define KTROP_SET 0 /* set trace points */
44 #define KTROP_CLEAR 1 /* clear trace points */
45 #define KTROP_CLEARFILE 2 /* stop all tracing to file */
46 #define KTROP(o) ((o)&3) /* macro to extract operation */
47 /*
48 * flags (ORed in with operation)
49 */
50 #define KTRFLAG_DESCEND 4 /* perform op on all children too */
51
52 /*
53 * ktrace record header
54 */
55 struct ktr_header {
56 int ktr_len; /* length of buf */
57 short ktr_type; /* trace record type */
58 pid_t ktr_pid; /* process id */
59 char ktr_comm[MAXCOMLEN+1]; /* command name */
60 struct timeval ktr_time; /* timestamp */
61 caddr_t ktr_buf;
62 };
63
64 /*
65 * Test for kernel trace point (MP SAFE)
66 */
67 #define KTRPOINT(p, type) \
68 (((p)->p_traceflag & ((1<<(type))|KTRFAC_ACTIVE)) == (1<<(type)))
69
70 /*
71 * ktrace record types
72 */
73
74 /*
75 * KTR_SYSCALL - system call record
76 */
77 #define KTR_SYSCALL 1
78 struct ktr_syscall {
79 short ktr_code; /* syscall number */
80 short ktr_narg; /* number of arguments */
81 /*
82 * followed by ktr_narg register_t
83 */
84 register_t ktr_args[1];
85 };
86
87 /*
88 * KTR_SYSRET - return from system call record
89 */
90 #define KTR_SYSRET 2
91 struct ktr_sysret {
92 short ktr_code;
93 short ktr_eosys;
94 int ktr_error;
95 register_t ktr_retval;
96 };
97
98 /*
99 * KTR_NAMEI - namei record
100 */
101 #define KTR_NAMEI 3
102 /* record contains pathname */
103
104 /*
105 * KTR_GENIO - trace generic process i/o
106 */
107 #define KTR_GENIO 4
108 struct ktr_genio {
109 int ktr_fd;
110 enum uio_rw ktr_rw;
111 /*
112 * followed by data successfully read/written
113 */
114 };
115
116 /*
117 * KTR_PSIG - trace processed signal
118 */
119 #define KTR_PSIG 5
120 struct ktr_psig {
121 int signo;
122 sig_t action;
123 int code;
124 sigset_t mask;
125 };
126
127 /*
128 * KTR_CSW - trace context switches
129 */
130 #define KTR_CSW 6
131 struct ktr_csw {
132 int out; /* 1 if switch out, 0 if switch in */
133 int user; /* 1 if usermode (ivcsw), 0 if kernel (vcsw) */
134 };
135
136 /*
137 * KTR_USER - data comming from userland
138 */
139 #define KTR_USER_MAXLEN 2048 /* maximum length of passed data */
140 #define KTR_USER 7
141
142 /*
143 * kernel trace points (in p_traceflag)
144 */
145 #define KTRFAC_MASK 0x00ffffff
146 #define KTRFAC_SYSCALL (1<<KTR_SYSCALL)
147 #define KTRFAC_SYSRET (1<<KTR_SYSRET)
148 #define KTRFAC_NAMEI (1<<KTR_NAMEI)
149 #define KTRFAC_GENIO (1<<KTR_GENIO)
150 #define KTRFAC_PSIG (1<<KTR_PSIG)
151 #define KTRFAC_CSW (1<<KTR_CSW)
152 #define KTRFAC_USER (1<<KTR_USER)
153 /*
154 * trace flags (also in p_traceflags)
155 */
156 #define KTRFAC_ROOT 0x80000000 /* root set this trace */
157 #define KTRFAC_INHERIT 0x40000000 /* pass trace flags to children */
158 #define KTRFAC_ACTIVE 0x20000000 /* ktrace logging in progress, ignore */
159
160 #ifdef _KERNEL
161 void ktrnamei __P((struct vnode *,char *));
162 void ktrcsw __P((struct vnode *,int,int));
163 void ktrpsig __P((struct vnode *, int, sig_t, sigset_t *, int));
164 void ktrgenio __P((struct vnode *, int, enum uio_rw, struct uio *, int));
165 void ktrsyscall __P((struct vnode *, int, int narg, register_t args[]));
166 void ktrsysret __P((struct vnode *, int, int, register_t));
167
168 #else
169
170 #include <sys/cdefs.h>
171
172 __BEGIN_DECLS
173 int ktrace __P((const char *, int, int, pid_t));
174 int utrace __P((const void *, size_t));
175 __END_DECLS
176
177 #endif
178
179 #endif
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