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 $ 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 180