/*- * Copyright (c) 1997 Doug Rabson * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: module.h,v 1.1 1997/05/07 16:05:45 dfr Exp $ */ #ifndef _SYS_MODULE_H_ #define _SYS_MODULE_H_ #ifdef KERNEL typedef enum { MOD_LOAD, MOD_UNLOAD, MOD_SHUTDOWN } modeventtype_t; struct module; typedef struct module *module_t; typedef int (*modeventhand_t)(module_t mod, modeventtype_t what, void *arg); /* * Struct for registering modules statically via SYSINIT. */ typedef struct moduledata { char* name; /* module name */ modeventhand_t evhand; /* event handler */ void* priv; /* extra data */ } moduledata_t; #define DECLARE_MODULE(name, data, sub, order) \ SYSINIT(name##module, sub, order, module_register_init, &data) void module_register_init(void *data); int module_register(const char *name, modeventhand_t callback, void *arg); module_t module_lookupbyname(const char *name); module_t module_lookupbyid(int modid); void module_reference(module_t mod); void module_release(module_t mod); int module_unload(module_t mod); int module_getid(module_t mod); module_t module_getfnext(module_t mod); #ifdef MOD_DEBUG extern int mod_debug; #define MOD_DEBUG_REFS 1 #define MOD_DPF(cat, args) \ do { \ if (mod_debug & MOD_DEBUG_##cat) printf args; \ } while (0) #else #define MOD_DPF(cat, args) #endif #endif /* KERNEL */ #define MAXMODNAME 32 struct module_stat { int version; /* set to sizeof(struct module_stat) */ char name[MAXMODNAME]; int refs; int id; }; #ifndef KERNEL #include __BEGIN_DECLS int modnext(int modid); int modfnext(int modid); int modstat(int modid, struct module_stat* stat); int modfind(char *name); __END_DECLS #endif #endif /* !_SYS_MODULE_H_ */