1 /* $OpenBSD: ktrace.h,v 1.8 2003/06/02 23:28:21 millert Exp $ */ 2 /* $NetBSD: ktrace.h,v 1.12 1996/02/04 02:12:29 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)ktrace.h 8.1 (Berkeley) 6/2/93 33 */ 34 35 /* 36 * operations to ktrace system call (KTROP(op)) 37 */ 38 #define KTROP_SET 0 /* set trace points */ 39 #define KTROP_CLEAR 1 /* clear trace points */ 40 #define KTROP_CLEARFILE 2 /* stop all tracing to file */ 41 #define KTROP(o) ((o)&3) /* macro to extract operation */ 42 /* 43 * flags (ORed in with operation) 44 */ 45 #define KTRFLAG_DESCEND 4 /* perform op on all children too */ 46 47 /* 48 * ktrace record header 49 */ 50 struct ktr_header { 51 int ktr_len; /* length of buf */ 52 short ktr_type; /* trace record type */ 53 pid_t ktr_pid; /* process id */ 54 char ktr_comm[MAXCOMLEN+1]; /* command name */ 55 struct timeval ktr_time; /* timestamp */ 56 caddr_t ktr_buf; 57 }; 58 59 /* 60 * Test for kernel trace point 61 */ 62 #define KTRPOINT(p, type) \ 63 (((p)->p_traceflag & ((1<<(type))|KTRFAC_ACTIVE)) == (1<<(type))) 64 65 /* 66 * ktrace record types 67 */ 68 69 /* 70 * KTR_SYSCALL - system call record 71 */ 72 #define KTR_SYSCALL 1 73 struct ktr_syscall { 74 int ktr_code; /* syscall number */ 75 int ktr_argsize; /* size of arguments */ 76 /* 77 * followed by ktr_argsize/sizeof(register_t) "register_t"s 78 */ 79 }; 80 81 /* 82 * KTR_SYSRET - return from system call record 83 */ 84 #define KTR_SYSRET 2 85 struct ktr_sysret { 86 short ktr_code; 87 short ktr_eosys; 88 int ktr_error; 89 int ktr_retval; 90 }; 91 92 /* 93 * KTR_NAMEI - namei record 94 */ 95 #define KTR_NAMEI 3 96 /* record contains pathname */ 97 98 /* 99 * KTR_GENIO - trace generic process i/o 100 */ 101 #define KTR_GENIO 4 102 struct ktr_genio { 103 int ktr_fd; 104 enum uio_rw ktr_rw; 105 /* 106 * followed by data successfully read/written 107 */ 108 }; 109 110 /* 111 * KTR_PSIG - trace processed signal 112 */ 113 #define KTR_PSIG 5 114 struct ktr_psig { 115 int signo; 116 sig_t action; 117 int mask; 118 int code; 119 siginfo_t si; 120 }; 121 122 /* 123 * KTR_CSW - trace context switches 124 */ 125 #define KTR_CSW 6 126 struct ktr_csw { 127 int out; /* 1 if switch out, 0 if switch in */ 128 int user; /* 1 if usermode (ivcsw), 0 if kernel (vcsw) */ 129 }; 130 131 /* 132 * KTR_EMUL - emulation change 133 */ 134 #define KTR_EMUL 7 135 /* record contains emulation name */ 136 137 138 /* 139 * kernel trace points (in p_traceflag) 140 */ 141 #define KTRFAC_MASK 0x00ffffff 142 #define KTRFAC_SYSCALL (1<<KTR_SYSCALL) 143 #define KTRFAC_SYSRET (1<<KTR_SYSRET) 144 #define KTRFAC_NAMEI (1<<KTR_NAMEI) 145 #define KTRFAC_GENIO (1<<KTR_GENIO) 146 #define KTRFAC_PSIG (1<<KTR_PSIG) 147 #define KTRFAC_CSW (1<<KTR_CSW) 148 #define KTRFAC_EMUL (1<<KTR_EMUL) 149 /* 150 * trace flags (also in p_traceflags) 151 */ 152 #define KTRFAC_ROOT 0x80000000 /* root set this trace */ 153 #define KTRFAC_INHERIT 0x40000000 /* pass trace flags to children */ 154 #define KTRFAC_ACTIVE 0x20000000 /* ktrace logging in progress, ignore */ 155 156 #ifndef _KERNEL 157 158 #include <sys/cdefs.h> 159 160 __BEGIN_DECLS 161 int ktrace(const char *, int, int, pid_t); 162 __END_DECLS 163 164 #else 165 166 void ktrcsw(struct proc *, int, int); 167 void ktremul(struct proc *, char *); 168 void ktrgenio(struct proc *, int, enum uio_rw, struct iovec *, int, int); 169 void ktrnamei(struct proc *, char *); 170 void ktrpsig(struct proc *, int, sig_t, int, int, siginfo_t *); 171 void ktrsyscall(struct proc *, register_t, size_t, register_t []); 172 void ktrsysret(struct proc *, register_t, int, register_t); 173 174 void ktrsettracevnode(struct proc *, struct vnode *); 175 176 #endif /* !_KERNEL */ 177