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1 | /* |
2 | * Copyright (c) 1993 Christoph M. Robitschko | |
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3 | * All rights reserved. |
4 | * | |
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5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
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15 | * This product includes software developed by Christoph M. Robitschko |
16 | * 4. The name of the author may not be used to endorse or promote products | |
17 | * derived from this software withough specific prior written permission | |
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19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
20 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
21 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
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29 | */ |
30 | ||
31 | /* | |
32 | * cf_table.c | |
33 | * The table of words that the configuration subsystem understands, | |
34 | * along with local support functions. | |
35 | */ | |
36 | ||
37 | #ifdef CONFIGURE | |
38 | ||
39 | #include <stdlib.h> | |
40 | #include <unistd.h> | |
41 | #include <string.h> | |
42 | #include <ttyent.h> | |
43 | #include <sys/types.h> | |
44 | #include <sys/signal.h> | |
45 | #include <sys/time.h> | |
46 | #include <sys/resource.h> | |
47 | #include <sys/file.h> | |
48 | ||
49 | #include "init.h" | |
50 | #include "prototypes.h" | |
51 | #include "cf_defs.h" | |
52 | ||
53 | ||
54 | /* Prototypes for static functions */ | |
55 | static int conf_env(char *, int, int, char **, int); | |
56 | static int conf_include(char *, int, int, char **, int); | |
57 | static int conf_waittimes(char *, int, int, char **, int); | |
58 | ||
59 | ||
60 | /* static variables */ | |
61 | static struct rlimit proclimits[RLIM_NLIMITS]; | |
62 | ||
63 | ||
64 | /* extern variables, referenced inb Commands table */ | |
65 | extern int startup_single; | |
66 | extern struct ttyent RCent_auto; | |
67 | extern struct ttyent RCent_fast; | |
68 | extern struct ttyent Single_ent; | |
69 | extern int retrytime; | |
70 | extern int timeout_m2s_KILL; | |
71 | extern int timeout_m2s_TERM; | |
72 | extern int checkstatus; | |
73 | extern int checktime; | |
74 | ||
75 | ||
76 | ||
77 | #ifdef __STDC__ | |
78 | # define CURLIM(_lim_) &proclimits[RLIMIT_##_lim_].rlim_cur | |
79 | # define MAXLIM(_lim_) &proclimits[RLIMIT_##_lim_].rlim_max | |
80 | #else | |
81 | # define CURLIM(_lim_) &proclimits[RLIMIT_/**/_lim_].rlim_cur | |
82 | # define MAXLIM(_lim_) &proclimits[RLIMIT_/**/_lim_].rlim_max | |
83 | #endif | |
84 | ||
85 | ||
86 | /* | |
87 | * The table of all known words and actions | |
88 | */ | |
89 | ||
90 | const struct Command Commands[] = { | |
91 | ||
92 | #ifdef DEBUG | |
93 | {"debug_level", 0+SUB, T_EX, 0, NOVAR}, | |
94 | {"LEVEL", 1, T_INT, MAXVAL, &debug, {5}}, | |
95 | #endif | |
96 | ||
97 | {"startup_state", 0+SUB, T_EX, 0, NOVAR}, | |
98 | {"singleuser_mode", 1, T_EX, 0, &startup_single, {1}}, | |
99 | {"multiuser_mode", 1, T_EX, 0, &startup_single, {0}}, | |
100 | ||
101 | {"setenv", 0+SUB, T_EX, 0, NOVAR}, | |
102 | {"VAR", 1+SUB, T_STR, 0, NOVAR}, | |
103 | {"STRING", 2, T_STR, CFUNC, conf_env, {0}}, | |
104 | ||
105 | {"include", 0+SUB, T_EX, 0, NOVAR}, | |
106 | {"FILE", 1, T_STR, CFUNC, conf_include, {0}}, | |
107 | ||
108 | {"singleusershell", 0+SUB, T_EX, 0, NOVAR}, | |
109 | {"COMMAND", 1, T_STR, 0, &Single_ent.ty_getty, {0}}, | |
110 | {"singleuserterminal", 0+SUB, T_EX, 0, NOVAR}, | |
111 | {"TYPE", 1, T_STR, 0, &Single_ent.ty_type, {0}}, | |
112 | {"singleuserdevice", 0+SUB, T_EX, 0, NOVAR}, | |
113 | {"DEVICE", 1, T_STR, 0, &Single_ent.ty_name, {0}}, | |
114 | ||
115 | {"autobootcommand", 0+SUB, T_EX, 0, NOVAR}, | |
116 | {"COMMAND", 1, T_STR, 0, &RCent_auto.ty_getty, {0}}, | |
117 | {"fastbootcommand", 0+SUB, T_EX, 0, NOVAR}, | |
118 | {"COMMAND", 1, T_STR, 0, &RCent_fast.ty_getty, {0}}, | |
119 | ||
120 | {"timeout", 0+SUB, T_EX, 0, NOVAR}, | |
121 | {"shutdown", 1+SUB, T_EX, 0, NOVAR}, | |
122 | {"sigterm", 2+SUB, T_EX, 0, NOVAR}, | |
123 | {"TIMEOUT", 3, T_INT, MAXVAL, &timeout_m2s_TERM, {300}}, | |
124 | {"sigkill", 2+SUB, T_EX, 0, NOVAR}, | |
125 | {"TIMEOUT", 3, T_INT, MAXVAL, &timeout_m2s_KILL, {300}}, | |
126 | {"error-retry", 1+SUB, T_EX, 0, NOVAR}, | |
127 | {"TIME", 2, T_TIME, 0, &retrytime, {0}}, | |
128 | ||
129 | {"respawn", 0+SUB, T_EX, 0, NOVAR}, | |
130 | {"checkstatus", 1+SUB, T_EX, 0, NOVAR}, | |
131 | {"yes", 2, T_EX, 0, &checkstatus, {1}}, | |
132 | {"on", 2, T_EX, 0, &checkstatus, {1}}, | |
133 | {"no", 2, T_EX, 0, &checkstatus, {0}}, | |
134 | {"off", 2, T_EX, 0, &checkstatus, {0}}, | |
135 | {"checktime", 1+SUB, T_EX, 0, NOVAR}, | |
136 | {"yes", 2, T_EX, 0, &checktime, {DEF_CHECKTIME}}, | |
137 | {"on", 2, T_EX, 0, &checktime, {DEF_CHECKTIME}}, | |
138 | {"no", 2, T_EX, 0, &checktime, {0}}, | |
139 | {"off", 2, T_EX, 0, &checktime, {0}}, | |
140 | {"TIMEOUT", 2, T_TIME, MAXVAL, &checktime, {300}}, | |
141 | {"waittimes", 1+SUB, T_EX, 0, NOVAR}, | |
142 | {"delete_list", 2, T_EX, CFUNC, conf_waittimes, {1}}, | |
143 | {"add_list", 2+SUB, T_EX, 0, NOVAR}, | |
144 | {"TIME", 3, T_TIME, CFUNC, conf_waittimes, {2}}, | |
145 | ||
146 | {"limit", 0+SUB, T_EX, 0, NOVAR}, | |
147 | {"cputime", 1+SUB, T_EX, 0, NOVAR}, | |
148 | {"unlimited", 2, T_EX, 0, CURLIM(CPU), {RLIM_INFINITY}}, | |
149 | {"default", 2, T_EX, 0, NOVAR}, | |
150 | {"LIMIT", 2, T_TIME, 0, CURLIM(CPU), {0}}, | |
151 | {"filesize", 1+SUB, T_EX, 0, NOVAR}, | |
152 | {"unlimited", 2, T_EX, 0, CURLIM(FSIZE), {RLIM_INFINITY}}, | |
153 | {"default", 2, T_EX, 0, NOVAR}, | |
154 | {"LIMIT", 2, T_BYTE, 0, CURLIM(FSIZE), {0}}, | |
155 | {"datasize", 1+SUB, T_EX, 0, NOVAR}, | |
156 | {"unlimited", 2, T_EX, 0, CURLIM(DATA), {RLIM_INFINITY}}, | |
157 | {"default", 2, T_EX, 0, NOVAR}, | |
158 | {"LIMIT", 2, T_BYTE, 0, CURLIM(DATA), {0}}, | |
159 | {"stacksize", 1+SUB, T_EX, 0, NOVAR}, | |
160 | {"unlimited", 2, T_EX, 0, CURLIM(STACK), {RLIM_INFINITY}}, | |
161 | {"default", 2, T_EX, 0, NOVAR}, | |
162 | {"LIMIT", 2, T_BYTE, 0, CURLIM(STACK), {0}}, | |
163 | {"coredumpsize", 1+SUB, T_EX, 0, NOVAR}, | |
164 | {"unlimited", 2, T_EX, 0, CURLIM(CORE), {RLIM_INFINITY}}, | |
165 | {"default", 2, T_EX, 0, NOVAR}, | |
166 | {"LIMIT", 2, T_BYTE, 0, CURLIM(CORE), {0}}, | |
167 | {"memoryuse", 1+SUB, T_EX, 0, NOVAR}, | |
168 | {"unlimited", 2, T_EX, 0, CURLIM(RSS), {RLIM_INFINITY}}, | |
169 | {"default", 2, T_EX, 0, NOVAR}, | |
170 | {"LIMIT", 2, T_BYTE, 0, CURLIM(RSS), {0}}, | |
171 | {"memorylocked", 1+SUB, T_EX, 0, NOVAR}, | |
172 | {"unlimited", 2, T_EX, 0, CURLIM(MEMLOCK), {RLIM_INFINITY}}, | |
173 | {"default", 2, T_EX, 0, NOVAR}, | |
174 | {"LIMIT", 2, T_BYTE, 0, CURLIM(MEMLOCK), {0}}, | |
175 | {"maxprocesses", 1+SUB, T_EX, 0, NOVAR}, | |
176 | {"unlimited", 2, T_EX, 0, CURLIM(NPROC), {RLIM_INFINITY}}, | |
177 | {"default", 2, T_EX, 0, NOVAR}, | |
178 | {"LIMIT", 2, T_INT, 0, CURLIM(NPROC), {0}}, | |
179 | {"openfiles", 1+SUB, T_EX, 0, NOVAR}, | |
180 | {"unlimited", 2, T_EX, 0, CURLIM(OFILE), {RLIM_INFINITY}}, | |
181 | {"default", 2, T_EX, 0, NOVAR}, | |
182 | {"LIMIT", 2, T_INT, 0, CURLIM(OFILE), {0}}, | |
183 | ||
184 | {"hardlimit", 0+SUB, T_EX, 0, NOVAR}, | |
185 | {"cputime", 1+SUB, T_EX, 0, NOVAR}, | |
186 | {"unlimited", 2, T_EX, 0, MAXLIM(CPU), {RLIM_INFINITY}}, | |
187 | {"default", 2, T_EX, 0, NOVAR}, | |
188 | {"LIMIT", 2, T_TIME, NRAISE, MAXLIM(CPU), {0}}, | |
189 | {"filesize", 1+SUB, T_EX, 0, NOVAR}, | |
190 | {"unlimited", 2, T_EX, 0, MAXLIM(FSIZE), {RLIM_INFINITY}}, | |
191 | {"default", 2, T_EX, 0, NOVAR}, | |
192 | {"LIMIT", 2, T_BYTE, NRAISE, MAXLIM(FSIZE), {0}}, | |
193 | {"datasize", 1+SUB, T_EX, 0, NOVAR}, | |
194 | {"unlimited", 2, T_EX, 0, MAXLIM(DATA), {RLIM_INFINITY}}, | |
195 | {"default", 2, T_EX, 0, NOVAR}, | |
196 | {"LIMIT", 2, T_BYTE, NRAISE, MAXLIM(DATA), {0}}, | |
197 | {"stacksize", 1+SUB, T_EX, 0, NOVAR}, | |
198 | {"unlimited", 2, T_EX, 0, MAXLIM(STACK), {RLIM_INFINITY}}, | |
199 | {"default", 2, T_EX, 0, NOVAR}, | |
200 | {"LIMIT", 2, T_BYTE, NRAISE, MAXLIM(STACK), {0}}, | |
201 | {"coredumpsize", 1+SUB, T_EX, 0, NOVAR}, | |
202 | {"unlimited", 2, T_EX, 0, MAXLIM(CORE), {RLIM_INFINITY}}, | |
203 | {"default", 2, T_EX, 0, NOVAR}, | |
204 | {"LIMIT", 2, T_BYTE, NRAISE, MAXLIM(CORE), {0}}, | |
205 | {"memoryuse", 1+SUB, T_EX, 0, NOVAR}, | |
206 | {"unlimited", 2, T_EX, 0, MAXLIM(RSS), {RLIM_INFINITY}}, | |
207 | {"default", 2, T_EX, 0, NOVAR}, | |
208 | {"LIMIT", 2, T_BYTE, NRAISE, MAXLIM(RSS), {0}}, | |
209 | {"memorylocked", 1+SUB, T_EX, 0, NOVAR}, | |
210 | {"unlimited", 2, T_EX, 0, MAXLIM(MEMLOCK), {RLIM_INFINITY}}, | |
211 | {"default", 2, T_EX, 0, NOVAR}, | |
212 | {"LIMIT", 2, T_BYTE, NRAISE, MAXLIM(MEMLOCK), {0}}, | |
213 | {"maxprocesses", 1+SUB, T_EX, 0, NOVAR}, | |
214 | {"unlimited", 2, T_EX, 0, MAXLIM(NPROC), {RLIM_INFINITY}}, | |
215 | {"default", 2, T_EX, 0, NOVAR}, | |
216 | {"LIMIT", 2, T_INT, NRAISE, MAXLIM(NPROC), {0}}, | |
217 | {"openfiles", 1+SUB, T_EX, 0, NOVAR}, | |
218 | {"unlimited", 2, T_EX, 0, MAXLIM(OFILE), {RLIM_INFINITY}}, | |
219 | {"default", 2, T_EX, 0, NOVAR}, | |
220 | {"LIMIT", 2, T_INT, NRAISE, MAXLIM(OFILE), {0}}, | |
221 | }; | |
222 | const int NCommands = (sizeof(Commands) / sizeof(struct Command)); | |
223 | ||
224 | ||
225 | /* | |
226 | * INIT-specific functions for configuration | |
227 | */ | |
228 | ||
229 | ||
230 | /* | |
231 | * SETCONF | |
232 | * called in each new process to set up configured things | |
233 | */ | |
234 | void | |
235 | setconf(void) | |
236 | { | |
237 | int f; | |
238 | ||
239 | Debug (4, "Setting configuration"); | |
240 | for (f=0; f< RLIM_NLIMITS; f++) | |
241 | (void) setrlimit(f, &proclimits[f]); | |
242 | Debug(4, "Setting configuration completed"); | |
243 | } | |
244 | ||
245 | ||
246 | ||
247 | /* | |
248 | * GETCONF | |
249 | * prepare for configuration | |
250 | * called once before configure(). | |
251 | */ | |
252 | void | |
253 | getconf(void) | |
254 | { | |
255 | int f; | |
256 | ||
257 | for (f=0; f< RLIM_NLIMITS; f++) | |
258 | (void) getrlimit(f, &proclimits[f]); | |
259 | } | |
260 | ||
261 | ||
262 | ||
263 | /* | |
264 | * CHECKCONF | |
265 | * check configured things etc. | |
266 | * called once after configure(). | |
267 | */ | |
268 | void | |
269 | checkconf(void) | |
270 | { | |
271 | int f; | |
272 | ||
273 | /* Do not allow soft limits to be higher than the hard limits */ | |
274 | for (f=0; f<RLIM_NLIMITS; f++) | |
275 | if (proclimits[f].rlim_cur > proclimits[f].rlim_max) | |
276 | proclimits[f].rlim_cur = proclimits[f].rlim_max; | |
277 | } | |
278 | ||
279 | ||
280 | /* | |
281 | * Support functions, referenced in Commands table | |
282 | */ | |
283 | ||
284 | /* Set an environment variable from the configuration file */ | |
285 | static int | |
286 | conf_env(configfile, lineno, argc, argv, what) | |
287 | char *configfile; | |
288 | int lineno; | |
289 | int argc; | |
290 | char **argv; | |
291 | int what; | |
292 | { | |
293 | iputenv(argv[1], argv[2]); | |
294 | return(0); | |
295 | } | |
296 | ||
297 | /* Include another configuration file */ | |
298 | static int | |
299 | conf_include(configfile, lineno, argc, argv, what) | |
300 | char *configfile; | |
301 | int lineno; | |
302 | int argc; | |
303 | char **argv; | |
304 | int what; | |
305 | { | |
306 | configure(argv[1]); | |
307 | return(0); | |
308 | } | |
309 | ||
310 | ||
311 | /* Configure the times to wait before restarting a getty that has failed */ | |
312 | static int | |
313 | conf_waittimes(configfile, lineno, argc, argv, what) | |
314 | char *configfile; | |
315 | int lineno; | |
316 | int argc; | |
317 | char **argv; | |
318 | int what; | |
319 | { | |
320 | Debug(0, "conf_waittimes not yet implemented."); | |
321 | return(0); | |
322 | } | |
323 | ||
324 | #endif |