module.h revision 40137
125537Sdfr/*- 225537Sdfr * Copyright (c) 1997 Doug Rabson 325537Sdfr * All rights reserved. 425537Sdfr * 525537Sdfr * Redistribution and use in source and binary forms, with or without 625537Sdfr * modification, are permitted provided that the following conditions 725537Sdfr * are met: 825537Sdfr * 1. Redistributions of source code must retain the above copyright 925537Sdfr * notice, this list of conditions and the following disclaimer. 1025537Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1125537Sdfr * notice, this list of conditions and the following disclaimer in the 1225537Sdfr * documentation and/or other materials provided with the distribution. 1325537Sdfr * 1425537Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1525537Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1625537Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1725537Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1825537Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1925537Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2025537Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2125537Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2225537Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2325537Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2425537Sdfr * SUCH DAMAGE. 2525537Sdfr * 2640137Speter * $Id: module.h,v 1.3 1998/06/10 10:57:29 dfr Exp $ 2725537Sdfr */ 2825537Sdfr 2925537Sdfr#ifndef _SYS_MODULE_H_ 3025537Sdfr#define _SYS_MODULE_H_ 3125537Sdfr 3225537Sdfrtypedef enum { 3325537Sdfr MOD_LOAD, 3425537Sdfr MOD_UNLOAD, 3525537Sdfr MOD_SHUTDOWN 3625537Sdfr} modeventtype_t; 3725537Sdfr 3825537Sdfrstruct module; 3925537Sdfrtypedef struct module *module_t; 4025537Sdfr 4125537Sdfrtypedef int (*modeventhand_t)(module_t mod, modeventtype_t what, void *arg); 4225537Sdfr 4325537Sdfr/* 4425537Sdfr * Struct for registering modules statically via SYSINIT. 4525537Sdfr */ 4625537Sdfrtypedef struct moduledata { 4725537Sdfr char* name; /* module name */ 4825537Sdfr modeventhand_t evhand; /* event handler */ 4925537Sdfr void* priv; /* extra data */ 5040137Speter void* _file; /* private; used by linker */ 5125537Sdfr} moduledata_t; 5225537Sdfr 5340137Speter#ifdef KERNEL 5440137Speter 5525537Sdfr#define DECLARE_MODULE(name, data, sub, order) \ 5636849SdfrSYSINIT(name##module, sub, order, module_register_init, &data) \ 5736849Sdfrstruct __hack 5825537Sdfr 5930683Sjmgvoid module_register_init(void *data); 6040137Speterint module_register(const char *name, modeventhand_t callback, void *arg, 6140137Speter void *file); 6225537Sdfrmodule_t module_lookupbyname(const char *name); 6325537Sdfrmodule_t module_lookupbyid(int modid); 6425537Sdfrvoid module_reference(module_t mod); 6525537Sdfrvoid module_release(module_t mod); 6625537Sdfrint module_unload(module_t mod); 6725537Sdfrint module_getid(module_t mod); 6825537Sdfrmodule_t module_getfnext(module_t mod); 6925537Sdfr 7025537Sdfr#ifdef MOD_DEBUG 7125537Sdfr 7225537Sdfrextern int mod_debug; 7325537Sdfr#define MOD_DEBUG_REFS 1 7425537Sdfr 7525537Sdfr#define MOD_DPF(cat, args) \ 7625537Sdfr do { \ 7725537Sdfr if (mod_debug & MOD_DEBUG_##cat) printf args; \ 7825537Sdfr } while (0) 7925537Sdfr 8025537Sdfr#else 8125537Sdfr 8225537Sdfr#define MOD_DPF(cat, args) 8325537Sdfr 8425537Sdfr#endif 8525537Sdfr 8625537Sdfr#endif /* KERNEL */ 8725537Sdfr 8825537Sdfr#define MAXMODNAME 32 8925537Sdfr 9025537Sdfrstruct module_stat { 9125537Sdfr int version; /* set to sizeof(struct module_stat) */ 9225537Sdfr char name[MAXMODNAME]; 9325537Sdfr int refs; 9425537Sdfr int id; 9525537Sdfr}; 9625537Sdfr 9725537Sdfr#ifndef KERNEL 9825537Sdfr 9925537Sdfr#include <sys/cdefs.h> 10025537Sdfr 10125537Sdfr__BEGIN_DECLS 10225537Sdfrint modnext(int modid); 10325537Sdfrint modfnext(int modid); 10425537Sdfrint modstat(int modid, struct module_stat* stat); 10525537Sdfrint modfind(char *name); 10625537Sdfr__END_DECLS 10725537Sdfr 10825537Sdfr#endif 10925537Sdfr 11025537Sdfr#endif /* !_SYS_MODULE_H_ */ 111