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
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 ints
83 */
84 };
85
86 /*
87 * KTR_SYSRET - return from system call record
88 */
89 #define KTR_SYSRET 2
90 struct ktr_sysret {
91 short ktr_code;
92 short ktr_eosys;
93 int ktr_error;
94 int ktr_retval;
95 };
96
97 /*
98 * KTR_NAMEI - namei record
99 */
100 #define KTR_NAMEI 3
101 /* record contains pathname */
102
103 /*
104 * KTR_GENIO - trace generic process i/o
105 */
106 #define KTR_GENIO 4
107 struct ktr_genio {
108 int ktr_fd;
109 enum uio_rw ktr_rw;
110 /*
111 * followed by data successfully read/written
112 */
113 };
114
115 /*
116 * KTR_PSIG - trace processed signal
117 */
118 #define KTR_PSIG 5
119 struct ktr_psig {
120 int signo;
121 sig_t action;
122 int mask;
123 int code;
124 };
125
126 /*
127 * KTR_CSW - trace context switches
128 */
129 #define KTR_CSW 6
130 struct ktr_csw {
131 int out; /* 1 if switch out, 0 if switch in */
132 int user; /* 1 if usermode (ivcsw), 0 if kernel (vcsw) */
133 };
134
135 /*
136 * KTR_USER - data comming from userland
137 */
138 #define KTR_USER_MAXLEN 2048
139 #define KTR_USER 7
140
141 /*
142 * kernel trace points (in p_traceflag)
143 */
144 #define KTRFAC_MASK 0x00ffffff
145 #define KTRFAC_SYSCALL (1<<KTR_SYSCALL)
146 #define KTRFAC_SYSRET (1<<KTR_SYSRET)
147 #define KTRFAC_NAMEI (1<<KTR_NAMEI)
148 #define KTRFAC_GENIO (1<<KTR_GENIO)
149 #define KTRFAC_PSIG (1<<KTR_PSIG)
150 #define KTRFAC_CSW (1<<KTR_CSW)
151 #define KTRFAC_USER (1<<KTR_USER)
152 /*
153 * trace flags (also in p_traceflags)
154 */
155 #define KTRFAC_ROOT 0x80000000 /* root set this trace */
156 #define KTRFAC_INHERIT 0x40000000 /* pass trace flags to children */
157 #define KTRFAC_ACTIVE 0x20000000 /* ktrace logging in progress, ignore */
158
159 #ifdef KERNEL
160 void ktrnamei __P((struct vnode *,char *));
161 void ktrcsw __P((struct vnode *,int,int));
162 void ktrpsig __P((struct vnode *,int, sig_t, int, int));
163 void ktrgenio __P((struct vnode *, int, enum uio_rw, struct uio *, int));
164 void ktrsyscall __P((struct vnode *, int, int narg, int args[]));
165 void ktrsysret __P((struct vnode *, int, int, int));
166
167 #else /* KERNEL */
168
169 #include <sys/cdefs.h>
170
171 __BEGIN_DECLS
172 int ktrace __P((const char *, int, int, pid_t));
173 int utrace __P((const caddr_t , size_t));
174 __END_DECLS
175
176 #endif /* !KERNEL */
177
178 #endif
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