1 /* $NetBSD: lua.h,v 1.9 2023/07/11 14:57:21 martin Exp $ */ 2 3 /* 4 * Copyright (c) 2014 by Lourival Vieira Neto <lneto@NetBSD.org>. 5 * Copyright (c) 2011, 2013 Marc Balmer <mbalmer@NetBSD.org>. 6 * 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. The name of the Author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef _SYS_LUA_H_ 33 #define _SYS_LUA_H_ 34 35 #include <sys/param.h> 36 #include <sys/ioccom.h> 37 38 #include <lua.h> /* for lua_State */ 39 40 #ifdef _KERNEL 41 #include <sys/condvar.h> 42 #include <sys/mutex.h> 43 #endif 44 45 #define MAX_LUA_NAME 16 46 #define MAX_LUA_DESC 64 47 #define LUA_MAX_MODNAME 32 48 49 struct lua_state_info { 50 char name[MAX_LUA_NAME]; 51 char desc[MAX_LUA_DESC]; 52 bool user; 53 }; 54 55 struct lua_info { 56 int num_states; /* total number of created Lua states */ 57 struct lua_state_info *states; 58 }; 59 60 struct lua_create { 61 char name[MAX_LUA_NAME]; 62 char desc[MAX_LUA_DESC]; 63 }; 64 65 struct lua_require { 66 char state[MAX_LUA_NAME]; 67 char module[LUA_MAX_MODNAME]; 68 }; 69 70 struct lua_load { 71 char state[MAX_LUA_NAME]; 72 char path[MAXPATHLEN]; 73 }; 74 75 #define LUAINFO _IOWR('l', 0, struct lua_info) 76 77 #define LUACREATE _IOWR('l', 1, struct lua_create) 78 #define LUADESTROY _IOWR('l', 2, struct lua_create) 79 80 /* 'require' a module in a state */ 81 #define LUAREQUIRE _IOWR('l', 3, struct lua_require) 82 83 /* loading Lua code into a Lua state */ 84 #define LUALOAD _IOWR('l', 4, struct lua_load) 85 86 #ifdef _KERNEL 87 extern int klua_mod_register(const char *, lua_CFunction); 88 extern int klua_mod_unregister(const char *); 89 90 typedef struct _klua_State { 91 lua_State *L; 92 kmutex_t ks_lock; 93 bool ks_user; /* state created by user (ioctl) */ 94 } klua_State; 95 96 extern void klua_lock(klua_State *); 97 extern void klua_unlock(klua_State *); 98 99 extern void klua_close(klua_State *); 100 extern klua_State *klua_newstate(lua_Alloc, void *, const char *, const char *, 101 int); 102 extern klua_State *kluaL_newstate(const char *, const char *, int); 103 #endif 104 105 #endif /* _SYS_LUA_H_ */ 106