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 1.3 2003/11/03 19:31:36 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() 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(name) 127 char *name; 128 { 129 char *basefile, *file, *inw; 130 struct opt_list *ol; 131 struct opt *op, *op_head, *topp; 132 FILE *inf, *outf; 133 char *value; 134 char *oldvalue; 135 int seen; 136 int tidy; 137 138 file = tooption(name); 139 140 /* 141 * Check to see if the option was specified.. 142 */ 143 value = NULL; 144 for (op = opt; op; op = op->op_next) { 145 if (eq(name, op->op_name)) { 146 oldvalue = value; 147 value = op->op_value; 148 if (value == NULL) 149 value = ns("1"); 150 if (oldvalue != NULL && !eq(value, oldvalue)) 151 printf( 152 "%s:%d: option \"%s\" redefined from %s to %s\n", 153 PREFIX, op->op_line, op->op_name, oldvalue, 154 value); 155 op->op_ownfile++; 156 } 157 } 158 159 inf = fopen(file, "r"); 160 if (inf == 0) { 161 outf = fopen(file, "w"); 162 if (outf == 0) 163 err(1, "%s", file); 164 165 /* was the option in the config file? */ 166 if (value) { 167 fprintf(outf, "#define %s %s\n", name, value); 168 } /* else empty file */ 169 170 (void) fclose(outf); 171 return; 172 } 173 basefile = ""; 174 for (ol = otab; ol != 0; ol = ol->o_next) 175 if (eq(name, ol->o_name)) { 176 basefile = ol->o_file; 177 break; 178 } 179 oldvalue = NULL; 180 op_head = NULL; 181 seen = 0; 182 tidy = 0; 183 for (;;) { 184 char *cp; 185 char *invalue; 186 187 /* get the #define */ 188 if ((inw = get_word(inf)) == 0 || inw == (char *)EOF) 189 break; 190 /* get the option name */ 191 if ((inw = get_word(inf)) == 0 || inw == (char *)EOF) 192 break; 193 inw = ns(inw); 194 /* get the option value */ 195 if ((cp = get_word(inf)) == 0 || cp == (char *)EOF) 196 break; 197 /* option value */ 198 invalue = ns(cp); /* malloced */ 199 if (eq(inw, name)) { 200 oldvalue = invalue; 201 invalue = value; 202 seen++; 203 } 204 for (ol = otab; ol != 0; ol = ol->o_next) 205 if (eq(inw, ol->o_name)) 206 break; 207 if (!eq(inw, name) && !ol) { 208 printf("WARNING: unknown option `%s' removed from %s\n", 209 inw, file); 210 tidy++; 211 } else if (ol != NULL && !eq(basefile, ol->o_file)) { 212 printf("WARNING: option `%s' moved from %s to %s\n", 213 inw, basefile, ol->o_file); 214 tidy++; 215 } else { 216 op = (struct opt *) malloc(sizeof *op); 217 bzero(op, sizeof(*op)); 218 op->op_name = inw; 219 op->op_value = invalue; 220 op->op_next = op_head; 221 op_head = op; 222 } 223 224 /* EOL? */ 225 cp = get_word(inf); 226 if (cp == (char *)EOF) 227 break; 228 } 229 (void) fclose(inf); 230 if (!tidy && ((value == NULL && oldvalue == NULL) || 231 (value && oldvalue && eq(value, oldvalue)))) { 232 for (op = op_head; op != NULL; op = topp) { 233 topp = op->op_next; 234 free(op->op_name); 235 free(op->op_value); 236 free(op); 237 } 238 return; 239 } 240 241 if (value && !seen) { 242 /* New option appears */ 243 op = (struct opt *) malloc(sizeof *op); 244 bzero(op, sizeof(*op)); 245 op->op_name = ns(name); 246 op->op_value = value ? ns(value) : NULL; 247 op->op_next = op_head; 248 op_head = op; 249 } 250 251 outf = fopen(file, "w"); 252 if (outf == 0) 253 err(1, "%s", file); 254 for (op = op_head; op != NULL; op = topp) { 255 /* was the option in the config file? */ 256 if (op->op_value) { 257 fprintf(outf, "#define %s %s\n", 258 op->op_name, op->op_value); 259 } 260 topp = op->op_next; 261 free(op->op_name); 262 free(op->op_value); 263 free(op); 264 } 265 (void) fclose(outf); 266 } 267 268 /* 269 * Find the filename to store the option spec into. 270 */ 271 static char * 272 tooption(name) 273 char *name; 274 { 275 static char hbuf[MAXPATHLEN]; 276 char nbuf[MAXPATHLEN]; 277 struct opt_list *po; 278 279 /* "cannot happen"? the otab list should be complete.. */ 280 (void) strlcpy(nbuf, "options.h", sizeof(nbuf)); 281 282 for (po = otab ; po != 0; po = po->o_next) { 283 if (eq(po->o_name, name)) { 284 strlcpy(nbuf, po->o_file, sizeof(nbuf)); 285 break; 286 } 287 } 288 289 (void) strlcpy(hbuf, path(nbuf), sizeof(hbuf)); 290 return (hbuf); 291 } 292 293 /* 294 * read the options and options.<machine> files 295 */ 296 static void 297 read_options() 298 { 299 FILE *fp; 300 char fname[MAXPATHLEN]; 301 char *wd, *this, *val; 302 struct opt_list *po; 303 int first = 1; 304 char genopt[MAXPATHLEN]; 305 306 otab = 0; 307 if (ident == NULL) { 308 printf("no ident line specified\n"); 309 exit(1); 310 } 311 (void) snprintf(fname, sizeof(fname), "../../conf/options"); 312 openit: 313 fp = fopen(fname, "r"); 314 if (fp == 0) { 315 return; 316 } 317 next: 318 wd = get_word(fp); 319 if (wd == (char *)EOF) { 320 (void) fclose(fp); 321 if (first == 1) { 322 first++; 323 (void) snprintf(fname, sizeof fname, "../../conf/options.%s", machinename); 324 fp = fopen(fname, "r"); 325 if (fp != 0) 326 goto next; 327 (void) snprintf(fname, sizeof fname, "options.%s", machinename); 328 goto openit; 329 } 330 if (first == 2) { 331 first++; 332 (void) snprintf(fname, sizeof fname, "options.%s", raisestr(ident)); 333 fp = fopen(fname, "r"); 334 if (fp != 0) 335 goto next; 336 } 337 return; 338 } 339 if (wd == 0) 340 goto next; 341 if (wd[0] == '#') 342 { 343 while (((wd = get_word(fp)) != (char *)EOF) && wd) 344 ; 345 goto next; 346 } 347 this = ns(wd); 348 val = get_word(fp); 349 if (val == (char *)EOF) 350 return; 351 if (val == 0) { 352 char *s = ns(this); 353 (void) snprintf(genopt, sizeof(genopt), "opt_%s.h", lower(s)); 354 val = genopt; 355 free(s); 356 } 357 val = ns(val); 358 359 for (po = otab ; po != 0; po = po->o_next) { 360 if (eq(po->o_name, this)) { 361 printf("%s: Duplicate option %s.\n", 362 fname, this); 363 exit(1); 364 } 365 } 366 367 po = (struct opt_list *) malloc(sizeof *po); 368 bzero(po, sizeof(*po)); 369 po->o_name = this; 370 po->o_file = val; 371 po->o_next = otab; 372 otab = po; 373 374 goto next; 375 } 376 377 static char * 378 lower(str) 379 register char *str; 380 { 381 register char *cp = str; 382 383 while (*str) { 384 if (isupper(*str)) 385 *str = tolower(*str); 386 str++; 387 } 388 return (cp); 389 } 390 391