1 /* 2 * Copyright (c) 1995 Peter Wemm 3 * Copyright (c) 1980, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)mkheaders.c 8.1 (Berkeley) 6/6/93 35 * $FreeBSD: src/usr.sbin/config/mkoptions.c,v 1.17.2.3 2001/12/13 19:18:01 dillon Exp $ 36 * $DragonFly: src/usr.sbin/config/mkoptions.c,v 1.4 2003/11/16 11:51:14 eirikn Exp $ 37 */ 38 39 /* 40 * Make all the .h files for the optional entries 41 */ 42 43 #include <ctype.h> 44 #include <err.h> 45 #include <stdio.h> 46 #include <string.h> 47 #include <sys/param.h> 48 #include "config.h" 49 #include "y.tab.h" 50 51 static struct users { 52 int u_default; 53 int u_min; 54 int u_max; 55 } users[] = { 56 { 8, 2, 512 }, /* MACHINE_I386 */ 57 { 8, 2, 512 }, /* MACHINE_PC98 */ 58 { 8, 2, 512 }, /* MACHINE_ALPHA */ 59 }; 60 #define NUSERS (sizeof (users) / sizeof (users[0])) 61 62 static char *lower(char *); 63 static void read_options(void); 64 static void do_option(char *); 65 static char *tooption(char *); 66 67 void 68 options(void) 69 { 70 char buf[40]; 71 struct cputype *cp; 72 struct opt_list *ol; 73 struct opt *op; 74 struct users *up; 75 76 /* Fake the cpu types as options. */ 77 for (cp = cputype; cp != NULL; cp = cp->cpu_next) { 78 op = (struct opt *)malloc(sizeof(*op)); 79 memset(op, 0, sizeof(*op)); 80 op->op_name = ns(cp->cpu_name); 81 op->op_next = opt; 82 opt = op; 83 } 84 85 /* Initialize `maxusers'. */ 86 if ((unsigned)machine > NUSERS) { 87 printf("maxusers config info isn't present, using i386\n"); 88 up = &users[MACHINE_I386 - 1]; 89 } else 90 up = &users[machine - 1]; 91 if (maxusers == 0) { 92 /* printf("maxusers not specified; will auto-size\n"); */ 93 /* maxusers = 0; */ 94 } else if (maxusers < up->u_min) { 95 printf("minimum of %d maxusers assumed\n", up->u_min); 96 maxusers = up->u_min; 97 } else if (maxusers > up->u_max) 98 printf("warning: maxusers > %d (%d)\n", up->u_max, maxusers); 99 100 /* Fake MAXUSERS as an option. */ 101 op = (struct opt *)malloc(sizeof(*op)); 102 memset(op, 0, sizeof(*op)); 103 op->op_name = "MAXUSERS"; 104 snprintf(buf, sizeof(buf), "%d", maxusers); 105 op->op_value = ns(buf); 106 op->op_next = opt; 107 opt = op; 108 109 read_options(); 110 for (ol = otab; ol != 0; ol = ol->o_next) 111 do_option(ol->o_name); 112 for (op = opt; op; op = op->op_next) { 113 if (!op->op_ownfile) { 114 printf("%s:%d: unknown option \"%s\"\n", 115 PREFIX, op->op_line, op->op_name); 116 exit(1); 117 } 118 } 119 } 120 121 /* 122 * Generate an <options>.h file 123 */ 124 125 static void 126 do_option(char *name) 127 { 128 char *basefile, *file, *inw; 129 struct opt_list *ol; 130 struct opt *op, *op_head, *topp; 131 FILE *inf, *outf; 132 char *value; 133 char *oldvalue; 134 int seen; 135 int tidy; 136 137 file = tooption(name); 138 139 /* 140 * Check to see if the option was specified.. 141 */ 142 value = NULL; 143 for (op = opt; op; op = op->op_next) { 144 if (eq(name, op->op_name)) { 145 oldvalue = value; 146 value = op->op_value; 147 if (value == NULL) 148 value = ns("1"); 149 if (oldvalue != NULL && !eq(value, oldvalue)) 150 printf( 151 "%s:%d: option \"%s\" redefined from %s to %s\n", 152 PREFIX, op->op_line, op->op_name, oldvalue, 153 value); 154 op->op_ownfile++; 155 } 156 } 157 158 inf = fopen(file, "r"); 159 if (inf == 0) { 160 outf = fopen(file, "w"); 161 if (outf == 0) 162 err(1, "%s", file); 163 164 /* was the option in the config file? */ 165 if (value) { 166 fprintf(outf, "#define %s %s\n", name, value); 167 } /* else empty file */ 168 169 (void) fclose(outf); 170 return; 171 } 172 basefile = ""; 173 for (ol = otab; ol != 0; ol = ol->o_next) 174 if (eq(name, ol->o_name)) { 175 basefile = ol->o_file; 176 break; 177 } 178 oldvalue = NULL; 179 op_head = NULL; 180 seen = 0; 181 tidy = 0; 182 for (;;) { 183 char *cp; 184 char *invalue; 185 186 /* get the #define */ 187 if ((inw = get_word(inf)) == 0 || inw == (char *)EOF) 188 break; 189 /* get the option name */ 190 if ((inw = get_word(inf)) == 0 || inw == (char *)EOF) 191 break; 192 inw = ns(inw); 193 /* get the option value */ 194 if ((cp = get_word(inf)) == 0 || cp == (char *)EOF) 195 break; 196 /* option value */ 197 invalue = ns(cp); /* malloced */ 198 if (eq(inw, name)) { 199 oldvalue = invalue; 200 invalue = value; 201 seen++; 202 } 203 for (ol = otab; ol != 0; ol = ol->o_next) 204 if (eq(inw, ol->o_name)) 205 break; 206 if (!eq(inw, name) && !ol) { 207 printf("WARNING: unknown option `%s' removed from %s\n", 208 inw, file); 209 tidy++; 210 } else if (ol != NULL && !eq(basefile, ol->o_file)) { 211 printf("WARNING: option `%s' moved from %s to %s\n", 212 inw, basefile, ol->o_file); 213 tidy++; 214 } else { 215 op = (struct opt *) malloc(sizeof *op); 216 bzero(op, sizeof(*op)); 217 op->op_name = inw; 218 op->op_value = invalue; 219 op->op_next = op_head; 220 op_head = op; 221 } 222 223 /* EOL? */ 224 cp = get_word(inf); 225 if (cp == (char *)EOF) 226 break; 227 } 228 (void) fclose(inf); 229 if (!tidy && ((value == NULL && oldvalue == NULL) || 230 (value && oldvalue && eq(value, oldvalue)))) { 231 for (op = op_head; op != NULL; op = topp) { 232 topp = op->op_next; 233 free(op->op_name); 234 free(op->op_value); 235 free(op); 236 } 237 return; 238 } 239 240 if (value && !seen) { 241 /* New option appears */ 242 op = (struct opt *) malloc(sizeof *op); 243 bzero(op, sizeof(*op)); 244 op->op_name = ns(name); 245 op->op_value = value ? ns(value) : NULL; 246 op->op_next = op_head; 247 op_head = op; 248 } 249 250 outf = fopen(file, "w"); 251 if (outf == 0) 252 err(1, "%s", file); 253 for (op = op_head; op != NULL; op = topp) { 254 /* was the option in the config file? */ 255 if (op->op_value) { 256 fprintf(outf, "#define %s %s\n", 257 op->op_name, op->op_value); 258 } 259 topp = op->op_next; 260 free(op->op_name); 261 free(op->op_value); 262 free(op); 263 } 264 (void) fclose(outf); 265 } 266 267 /* 268 * Find the filename to store the option spec into. 269 */ 270 static char * 271 tooption(char *name) 272 { 273 static char hbuf[MAXPATHLEN]; 274 char nbuf[MAXPATHLEN]; 275 struct opt_list *po; 276 277 /* "cannot happen"? the otab list should be complete.. */ 278 (void) strlcpy(nbuf, "options.h", sizeof(nbuf)); 279 280 for (po = otab ; po != 0; po = po->o_next) { 281 if (eq(po->o_name, name)) { 282 strlcpy(nbuf, po->o_file, sizeof(nbuf)); 283 break; 284 } 285 } 286 287 (void) strlcpy(hbuf, path(nbuf), sizeof(hbuf)); 288 return (hbuf); 289 } 290 291 /* 292 * read the options and options.<machine> files 293 */ 294 static void 295 read_options(void) 296 { 297 FILE *fp; 298 char fname[MAXPATHLEN]; 299 char *wd, *this, *val; 300 struct opt_list *po; 301 int first = 1; 302 char genopt[MAXPATHLEN]; 303 304 otab = 0; 305 if (ident == NULL) { 306 printf("no ident line specified\n"); 307 exit(1); 308 } 309 (void) snprintf(fname, sizeof(fname), "../../conf/options"); 310 openit: 311 fp = fopen(fname, "r"); 312 if (fp == 0) { 313 return; 314 } 315 next: 316 wd = get_word(fp); 317 if (wd == (char *)EOF) { 318 (void) fclose(fp); 319 if (first == 1) { 320 first++; 321 (void) snprintf(fname, sizeof fname, "../../conf/options.%s", machinename); 322 fp = fopen(fname, "r"); 323 if (fp != 0) 324 goto next; 325 (void) snprintf(fname, sizeof fname, "options.%s", machinename); 326 goto openit; 327 } 328 if (first == 2) { 329 first++; 330 (void) snprintf(fname, sizeof fname, "options.%s", raisestr(ident)); 331 fp = fopen(fname, "r"); 332 if (fp != 0) 333 goto next; 334 } 335 return; 336 } 337 if (wd == 0) 338 goto next; 339 if (wd[0] == '#') 340 { 341 while (((wd = get_word(fp)) != (char *)EOF) && wd) 342 ; 343 goto next; 344 } 345 this = ns(wd); 346 val = get_word(fp); 347 if (val == (char *)EOF) 348 return; 349 if (val == 0) { 350 char *s = ns(this); 351 (void) snprintf(genopt, sizeof(genopt), "opt_%s.h", lower(s)); 352 val = genopt; 353 free(s); 354 } 355 val = ns(val); 356 357 for (po = otab ; po != 0; po = po->o_next) { 358 if (eq(po->o_name, this)) { 359 printf("%s: Duplicate option %s.\n", 360 fname, this); 361 exit(1); 362 } 363 } 364 365 po = (struct opt_list *) malloc(sizeof *po); 366 bzero(po, sizeof(*po)); 367 po->o_name = this; 368 po->o_file = val; 369 po->o_next = otab; 370 otab = po; 371 372 goto next; 373 } 374 375 static char * 376 lower(register char *str) 377 { 378 register char *cp = str; 379 380 while (*str) { 381 if (isupper(*str)) 382 *str = tolower(*str); 383 str++; 384 } 385 return (cp); 386 } 387 388