1 /*- 2 * Copyright (c) 2007-2008 John Birrell (jb@freebsd.org) 3 * 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 * 28 * This file contains BSD shims for Sun's DTrace code. 29 */ 30 31 #ifndef _SYS_DTRACE_BSD_H 32 #define _SYS_DTRACE_BSD_H 33 34 /* Forward definitions: */ 35 struct mbuf; 36 struct trapframe; 37 struct thread; 38 struct vattr; 39 struct vnode; 40 struct reg; 41 42 int dtrace_trap(struct trapframe *, u_int); 43 44 /* 45 * The dtrace module handles traps that occur during a DTrace probe. 46 * This type definition is used in the trap handler to provide a 47 * hook for the dtrace module to register its handler with. 48 */ 49 typedef int (*dtrace_trap_func_t)(struct trapframe *, u_int); 50 extern dtrace_trap_func_t dtrace_trap_func; 51 52 /* 53 * A hook which removes active FBT probes before executing the double fault 54 * handler. We want to ensure that DTrace doesn't trigger another trap, which 55 * would result in a reset. 56 */ 57 typedef void (*dtrace_doubletrap_func_t)(void); 58 extern dtrace_doubletrap_func_t dtrace_doubletrap_func; 59 60 /* Pid provider hooks */ 61 typedef int (*dtrace_pid_probe_ptr_t)(struct reg *); 62 extern dtrace_pid_probe_ptr_t dtrace_pid_probe_ptr; 63 typedef int (*dtrace_return_probe_ptr_t)(struct reg *); 64 extern dtrace_return_probe_ptr_t dtrace_return_probe_ptr; 65 66 /* Virtual time hook function type. */ 67 typedef void (*dtrace_vtime_switch_func_t)(struct thread *); 68 69 extern int dtrace_vtime_active; 70 extern dtrace_vtime_switch_func_t dtrace_vtime_switch_func; 71 72 /* The fasttrap module hooks into the fork, exit and exit. */ 73 typedef void (*dtrace_fork_func_t)(struct proc *, struct proc *); 74 typedef void (*dtrace_execexit_func_t)(struct proc *); 75 76 /* Global variable in kern_fork.c */ 77 extern dtrace_fork_func_t dtrace_fasttrap_fork; 78 79 /* Global variable in kern_exec.c */ 80 extern dtrace_execexit_func_t dtrace_fasttrap_exec; 81 82 /* Global variable in kern_exit.c */ 83 extern dtrace_execexit_func_t dtrace_fasttrap_exit; 84 85 /* The dtmalloc provider hooks into malloc. */ 86 typedef void (*dtrace_malloc_probe_func_t)(u_int32_t, uintptr_t arg0, 87 uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4); 88 89 extern dtrace_malloc_probe_func_t dtrace_malloc_probe; 90 91 /* dtnfsclient NFSv[34] access cache provider hooks. */ 92 typedef void (*dtrace_nfsclient_accesscache_flush_probe_func_t)(uint32_t, 93 struct vnode *); 94 extern dtrace_nfsclient_accesscache_flush_probe_func_t 95 dtrace_nfsclient_accesscache_flush_done_probe; 96 extern dtrace_nfsclient_accesscache_flush_probe_func_t 97 dtrace_nfscl_accesscache_flush_done_probe; 98 99 typedef void (*dtrace_nfsclient_accesscache_get_probe_func_t)(uint32_t, 100 struct vnode *, uid_t, uint32_t); 101 extern dtrace_nfsclient_accesscache_get_probe_func_t 102 dtrace_nfsclient_accesscache_get_hit_probe, 103 dtrace_nfsclient_accesscache_get_miss_probe; 104 extern dtrace_nfsclient_accesscache_get_probe_func_t 105 dtrace_nfscl_accesscache_get_hit_probe, 106 dtrace_nfscl_accesscache_get_miss_probe; 107 108 typedef void (*dtrace_nfsclient_accesscache_load_probe_func_t)(uint32_t, 109 struct vnode *, uid_t, uint32_t, int); 110 extern dtrace_nfsclient_accesscache_load_probe_func_t 111 dtrace_nfsclient_accesscache_load_done_probe; 112 extern dtrace_nfsclient_accesscache_load_probe_func_t 113 dtrace_nfscl_accesscache_load_done_probe; 114 115 /* dtnfsclient NFSv[234] attribute cache provider hooks. */ 116 typedef void (*dtrace_nfsclient_attrcache_flush_probe_func_t)(uint32_t, 117 struct vnode *); 118 extern dtrace_nfsclient_attrcache_flush_probe_func_t 119 dtrace_nfsclient_attrcache_flush_done_probe; 120 extern dtrace_nfsclient_attrcache_flush_probe_func_t 121 dtrace_nfscl_attrcache_flush_done_probe; 122 123 typedef void (*dtrace_nfsclient_attrcache_get_hit_probe_func_t)(uint32_t, 124 struct vnode *, struct vattr *); 125 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t 126 dtrace_nfsclient_attrcache_get_hit_probe; 127 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t 128 dtrace_nfscl_attrcache_get_hit_probe; 129 130 typedef void (*dtrace_nfsclient_attrcache_get_miss_probe_func_t)(uint32_t, 131 struct vnode *); 132 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t 133 dtrace_nfsclient_attrcache_get_miss_probe; 134 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t 135 dtrace_nfscl_attrcache_get_miss_probe; 136 137 typedef void (*dtrace_nfsclient_attrcache_load_probe_func_t)(uint32_t, 138 struct vnode *, struct vattr *, int); 139 extern dtrace_nfsclient_attrcache_load_probe_func_t 140 dtrace_nfsclient_attrcache_load_done_probe; 141 extern dtrace_nfsclient_attrcache_load_probe_func_t 142 dtrace_nfscl_attrcache_load_done_probe; 143 144 /* dtnfsclient NFSv[234] RPC provider hooks. */ 145 typedef void (*dtrace_nfsclient_nfs23_start_probe_func_t)(uint32_t, 146 struct vnode *, struct mbuf *, struct ucred *, int); 147 extern dtrace_nfsclient_nfs23_start_probe_func_t 148 dtrace_nfsclient_nfs23_start_probe; 149 extern dtrace_nfsclient_nfs23_start_probe_func_t 150 dtrace_nfscl_nfs234_start_probe; 151 152 typedef void (*dtrace_nfsclient_nfs23_done_probe_func_t)(uint32_t, 153 struct vnode *, struct mbuf *, struct ucred *, int, int); 154 extern dtrace_nfsclient_nfs23_done_probe_func_t 155 dtrace_nfsclient_nfs23_done_probe; 156 extern dtrace_nfsclient_nfs23_done_probe_func_t 157 dtrace_nfscl_nfs234_done_probe; 158 159 /* 160 * Functions which allow the dtrace module to check that the kernel 161 * hooks have been compiled with sufficient space for it's private 162 * structures. 163 */ 164 size_t kdtrace_proc_size(void); 165 size_t kdtrace_thread_size(void); 166 167 /* 168 * OpenSolaris compatible time functions returning nanoseconds. 169 * On OpenSolaris these return hrtime_t which we define as uint64_t. 170 */ 171 uint64_t dtrace_gethrtime(void); 172 uint64_t dtrace_gethrestime(void); 173 174 #endif /* _SYS_DTRACE_BSD_H */ 175