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 * $DragonFly: src/sys/sys/ktrace.h,v 1.4 2003/08/20 07:31:21 rob Exp $ 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 */ 56 struct 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 */ 68 #define KTRPOINT(td, type) \ 69 ((td->td_proc) && (((td)->td_proc->p_traceflag & ((1<<(type))|KTRFAC_ACTIVE)) == (1<<(type)))) 70 71 /* 72 * ktrace record types 73 */ 74 75 /* 76 * KTR_SYSCALL - system call record 77 */ 78 #define KTR_SYSCALL 1 79 struct 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 92 struct 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 4 109 struct 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 5 121 struct 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 6 132 struct 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 162 void ktrnamei (struct vnode *,char *); 163 void ktrcsw (struct vnode *,int,int); 164 void ktrpsig (struct vnode *, int, sig_t, sigset_t *, int); 165 void ktrgenio (struct vnode *, int, enum uio_rw, struct uio *, int); 166 void ktrsyscall (struct vnode *, int, int narg, register_t args[]); 167 void ktrsysret (struct vnode *, int, int, register_t); 168 169 #else 170 171 #include <sys/cdefs.h> 172 173 __BEGIN_DECLS 174 int ktrace (const char *, int, int, pid_t); 175 int utrace (const void *, size_t); 176 __END_DECLS 177 178 #endif 179 180 #endif 181