1 /* $NetBSD: luasystm.c,v 1.6 2022/08/11 23:53:04 gutteridge Exp $ */
2
3 /*
4 * Copyright (c) 2011, 2013 Marc Balmer <mbalmer@NetBSD.org>.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the Author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 /* Lua systm module */
32
33 #include <sys/param.h>
34 #include <sys/lua.h>
35 #include <sys/callout.h>
36 #include <sys/cpu.h>
37 #ifdef _MODULE
38 #include <sys/module.h>
39 #endif
40 #include <sys/systm.h>
41
42 #include <lua.h>
43 #include <lauxlib.h>
44
45 #ifdef _MODULE
46 MODULE(MODULE_CLASS_MISC, luasystm, "lua");
47
48 /* Various printing functions */
49 static int
print(lua_State * L)50 print(lua_State *L)
51 {
52 const char *s;
53
54 s = lua_tostring(L, -1);
55 if (s)
56 printf("%s", s);
57 return 0;
58 }
59
60 static int
print_nolog(lua_State * L)61 print_nolog(lua_State *L)
62 {
63 const char *s;
64
65 s = lua_tostring(L, -1);
66 if (s)
67 printf_nolog("%s", s);
68 return 0;
69 }
70
71 static int
uprint(lua_State * L)72 uprint(lua_State *L)
73 {
74 const char *s;
75
76 s = lua_tostring(L, -1);
77 if (s)
78 uprintf("%s", s);
79 return 0;
80 }
81
82 static int
systm_aprint_normal(lua_State * L)83 systm_aprint_normal(lua_State *L)
84 {
85 const char *s;
86
87 s = lua_tostring(L, -1);
88 if (s)
89 aprint_normal("%s", s);
90 return 0;
91 }
92
93 static int
systm_aprint_naive(lua_State * L)94 systm_aprint_naive(lua_State *L)
95 {
96 const char *s;
97
98 s = lua_tostring(L, -1);
99 if (s)
100 aprint_naive("%s", s);
101 return 0;
102 }
103
104 static int
systm_aprint_verbose(lua_State * L)105 systm_aprint_verbose(lua_State *L)
106 {
107 const char *s;
108
109 s = lua_tostring(L, -1);
110 if (s)
111 aprint_verbose("%s", s);
112 return 0;
113 }
114
115 static int
systm_aprint_debug(lua_State * L)116 systm_aprint_debug(lua_State *L)
117 {
118 const char *s;
119
120 s = lua_tostring(L, -1);
121 if (s)
122 aprint_debug("%s", s);
123 return 0;
124 }
125
126 static int
systm_aprint_error(lua_State * L)127 systm_aprint_error(lua_State *L)
128 {
129 const char *s;
130
131 s = lua_tostring(L, -1);
132 if (s)
133 aprint_error("%s", s);
134 return 0;
135 }
136
137 static int
systm_aprint_get_error_count(lua_State * L)138 systm_aprint_get_error_count(lua_State *L)
139 {
140 lua_pushinteger(L, aprint_get_error_count());
141 return 1;
142 }
143
144 /* panicking */
145
146 static int
systm_panic(lua_State * L)147 systm_panic(lua_State *L)
148 {
149 const char *s;
150
151 s = lua_tostring(L, -1);
152 if (s)
153 panic("%s", s);
154 return 0;
155 }
156
157 /* callouts */
158
159 /* mutexes */
160
161 static int
luaopen_systm(lua_State * L)162 luaopen_systm(lua_State *L)
163 {
164 const luaL_Reg systm_lib[ ] = {
165 { "print", print },
166 { "print_nolog", print_nolog },
167 { "uprint", uprint },
168 { "aprint_normal", systm_aprint_normal },
169 { "aprint_naive", systm_aprint_naive },
170 { "aprint_verbose", systm_aprint_verbose },
171 { "aprint_debug", systm_aprint_debug },
172 { "aprint_error", systm_aprint_error },
173 { "aprint_get_error_count", systm_aprint_get_error_count },
174
175 /* panicking */
176 { "panic", systm_panic },
177
178 /* callouts */
179
180 /* mutexes */
181
182 {NULL, NULL}
183 };
184
185 luaL_newlib(L, systm_lib);
186
187 /* some string values */
188 lua_pushstring(L, copyright);
189 lua_setfield(L, -2, "copyright");
190 lua_pushstring(L, cpu_getmodel());
191 lua_setfield(L, -2, "cpu_model");
192 lua_pushstring(L, machine);
193 lua_setfield(L, -2, "machine");
194 lua_pushstring(L, machine_arch);
195 lua_setfield(L, -2, "machine_arch");
196 lua_pushstring(L, osrelease);
197 lua_setfield(L, -2, "osrelease");
198 lua_pushstring(L, ostype);
199 lua_setfield(L, -2, "ostype");
200 lua_pushstring(L, kernel_ident);
201 lua_setfield(L, -2, "kernel_ident");
202 lua_pushstring(L, version);
203 lua_setfield(L, -2, "version");
204
205 /* some integer values */
206 lua_pushinteger(L, ncpu);
207 lua_setfield(L, -2, "ncpu");
208
209 return 1;
210 }
211
212 static int
luasystm_modcmd(modcmd_t cmd,void * opaque)213 luasystm_modcmd(modcmd_t cmd, void *opaque)
214 {
215 int error;
216
217 switch (cmd) {
218 case MODULE_CMD_INIT:
219 error = klua_mod_register("systm", luaopen_systm);
220 break;
221 case MODULE_CMD_FINI:
222 error = klua_mod_unregister("systm");
223 break;
224 default:
225 error = ENOTTY;
226 }
227 return error;
228 }
229 #endif
230