1 /*- 2 * Copyright (c) 2019 Kyle Evans <kevans@FreeBSD.org> 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <unistd.h> 31 32 #include <lua.h> 33 #include "lauxlib.h" 34 #include "lposix.h" 35 36 /* 37 * Minimal implementation of luaposix needed for internal FreeBSD bits. 38 */ 39 40 static int 41 lua_getpid(lua_State *L) 42 { 43 int n; 44 45 n = lua_gettop(L); 46 luaL_argcheck(L, n == 0, 1, "too many arguments"); 47 lua_pushinteger(L, getpid()); 48 return 1; 49 } 50 51 #define REG_SIMPLE(n) { #n, lua_ ## n } 52 static const struct luaL_Reg unistdlib[] = { 53 REG_SIMPLE(getpid), 54 { NULL, NULL }, 55 }; 56 #undef REG_SIMPLE 57 58 int 59 luaopen_posix_unistd(lua_State *L) 60 { 61 luaL_newlib(L, unistdlib); 62 return 1; 63 } 64