1 %union { 2 char *str; 3 int val; 4 struct file_list *file; 5 } 6 7 %token ARCH 8 %token COMMA 9 %token CONFIG 10 %token CPU 11 %token NOCPU 12 %token DEVICE 13 %token NODEVICE 14 %token ENV 15 %token EQUALS 16 %token PLUSEQUALS 17 %token HINTS 18 %token IDENT 19 %token MAXUSERS 20 %token PROFILE 21 %token OPTIONS 22 %token NOOPTION 23 %token MAKEOPTIONS 24 %token NOMAKEOPTION 25 %token SEMICOLON 26 %token INCLUDE 27 %token FILES 28 29 %token <str> ID 30 %token <val> NUMBER 31 32 %type <str> Save_id 33 %type <str> Opt_value 34 %type <str> Dev 35 %token <str> PATH 36 37 %{ 38 39 /* 40 * Copyright (c) 1988, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 * 67 * @(#)config.y 8.1 (Berkeley) 6/6/93 68 * $FreeBSD$ 69 */ 70 71 #include <assert.h> 72 #include <ctype.h> 73 #include <err.h> 74 #include <stdio.h> 75 #include <string.h> 76 77 #include "config.h" 78 79 struct device_head dtab; 80 char *ident; 81 char *env; 82 int envmode; 83 int hintmode; 84 int yyline; 85 const char *yyfile; 86 struct file_list_head ftab; 87 struct files_name_head fntab; 88 char errbuf[80]; 89 int maxusers; 90 91 #define ns(s) strdup(s) 92 int include(const char *, int); 93 void yyerror(const char *s); 94 int yywrap(void); 95 96 static void newdev(char *name); 97 static void newfile(char *name); 98 static void rmdev_schedule(struct device_head *dh, char *name); 99 static void newopt(struct opt_head *list, char *name, char *value, int append); 100 static void rmopt_schedule(struct opt_head *list, char *name); 101 102 static char * 103 devopt(char *dev) 104 { 105 char *ret = malloc(strlen(dev) + 5); 106 107 sprintf(ret, "DEV_%s", dev); 108 raisestr(ret); 109 return ret; 110 } 111 112 %} 113 %% 114 Configuration: 115 Many_specs 116 ; 117 118 Many_specs: 119 Many_specs Spec 120 | 121 /* lambda */ 122 ; 123 124 Spec: 125 Device_spec SEMICOLON 126 | 127 Config_spec SEMICOLON 128 | 129 INCLUDE PATH SEMICOLON { 130 if (incignore == 0) 131 include($2, 0); 132 }; 133 | 134 INCLUDE ID SEMICOLON { 135 if (incignore == 0) 136 include($2, 0); 137 }; 138 | 139 FILES ID SEMICOLON { newfile($2); }; 140 | 141 SEMICOLON 142 | 143 error SEMICOLON 144 ; 145 146 Config_spec: 147 ARCH Save_id { 148 if (machinename != NULL && !eq($2, machinename)) 149 errx(1, "%s:%d: only one machine directive is allowed", 150 yyfile, yyline); 151 machinename = $2; 152 machinearch = $2; 153 } | 154 ARCH Save_id Save_id { 155 if (machinename != NULL && 156 !(eq($2, machinename) && eq($3, machinearch))) 157 errx(1, "%s:%d: only one machine directive is allowed", 158 yyfile, yyline); 159 machinename = $2; 160 machinearch = $3; 161 } | 162 CPU Save_id { 163 struct cputype *cp = 164 (struct cputype *)calloc(1, sizeof (struct cputype)); 165 if (cp == NULL) 166 err(EXIT_FAILURE, "calloc"); 167 cp->cpu_name = $2; 168 SLIST_INSERT_HEAD(&cputype, cp, cpu_next); 169 } | 170 NOCPU Save_id { 171 struct cputype *cp, *cp2; 172 SLIST_FOREACH_SAFE(cp, &cputype, cpu_next, cp2) { 173 if (eq(cp->cpu_name, $2)) { 174 SLIST_REMOVE(&cputype, cp, cputype, cpu_next); 175 free(cp); 176 } 177 } 178 } | 179 OPTIONS Opt_list 180 | 181 NOOPTION NoOpt_list | 182 MAKEOPTIONS Mkopt_list 183 | 184 NOMAKEOPTION Save_id { rmopt_schedule(&mkopt, $2); } | 185 IDENT ID { ident = $2; } | 186 System_spec 187 | 188 MAXUSERS NUMBER { maxusers = $2; } | 189 PROFILE NUMBER { profiling = $2; } | 190 ENV ID { 191 env = $2; 192 envmode = 1; 193 } | 194 HINTS ID { 195 struct hint *hint; 196 197 hint = (struct hint *)calloc(1, sizeof (struct hint)); 198 if (hint == NULL) 199 err(EXIT_FAILURE, "calloc"); 200 hint->hint_name = $2; 201 STAILQ_INSERT_TAIL(&hints, hint, hint_next); 202 hintmode = 1; 203 } 204 205 System_spec: 206 CONFIG System_id System_parameter_list { 207 errx(1, "%s:%d: root/dump/swap specifications obsolete", 208 yyfile, yyline); 209 } 210 | 211 CONFIG System_id 212 ; 213 214 System_id: 215 Save_id { newopt(&mkopt, ns("KERNEL"), $1, 0); }; 216 217 System_parameter_list: 218 System_parameter_list ID 219 | ID 220 ; 221 222 Opt_list: 223 Opt_list COMMA Option 224 | 225 Option 226 ; 227 228 NoOpt_list: 229 NoOpt_list COMMA NoOption 230 | 231 NoOption 232 ; 233 Option: 234 Save_id { 235 newopt(&opt, $1, NULL, 0); 236 if (strchr($1, '=') != NULL) 237 errx(1, "%s:%d: The `=' in options should not be " 238 "quoted", yyfile, yyline); 239 } | 240 Save_id EQUALS Opt_value { 241 newopt(&opt, $1, $3, 0); 242 } ; 243 244 NoOption: 245 Save_id { 246 rmopt_schedule(&opt, $1); 247 }; 248 249 Opt_value: 250 ID { $$ = $1; } | 251 NUMBER { 252 char buf[80]; 253 254 (void) snprintf(buf, sizeof(buf), "%d", $1); 255 $$ = ns(buf); 256 } ; 257 258 Save_id: 259 ID { $$ = $1; } 260 ; 261 262 Mkopt_list: 263 Mkopt_list COMMA Mkoption 264 | 265 Mkoption 266 ; 267 268 Mkoption: 269 Save_id { newopt(&mkopt, $1, ns(""), 0); } | 270 Save_id EQUALS { newopt(&mkopt, $1, ns(""), 0); } | 271 Save_id EQUALS Opt_value { newopt(&mkopt, $1, $3, 0); } | 272 Save_id PLUSEQUALS Opt_value { newopt(&mkopt, $1, $3, 1); } ; 273 274 Dev: 275 ID { $$ = $1; } 276 ; 277 278 Device_spec: 279 DEVICE Dev_list 280 | 281 NODEVICE NoDev_list 282 ; 283 284 Dev_list: 285 Dev_list COMMA Device 286 | 287 Device 288 ; 289 290 NoDev_list: 291 NoDev_list COMMA NoDevice 292 | 293 NoDevice 294 ; 295 296 Device: 297 Dev { 298 newopt(&opt, devopt($1), ns("1"), 0); 299 /* and the device part */ 300 newdev($1); 301 } 302 303 NoDevice: 304 Dev { 305 char *s = devopt($1); 306 307 rmopt_schedule(&opt, s); 308 free(s); 309 /* and the device part */ 310 rmdev_schedule(&dtab, $1); 311 } ; 312 313 %% 314 315 void 316 yyerror(const char *s) 317 { 318 319 errx(1, "%s:%d: %s", yyfile, yyline + 1, s); 320 } 321 322 int 323 yywrap(void) 324 { 325 if (found_defaults) { 326 if (freopen(PREFIX, "r", stdin) == NULL) 327 err(2, "%s", PREFIX); 328 yyfile = PREFIX; 329 yyline = 0; 330 found_defaults = 0; 331 return 0; 332 } 333 return 1; 334 } 335 336 /* 337 * Add a new file to the list of files. 338 */ 339 static void 340 newfile(char *name) 341 { 342 struct files_name *nl; 343 344 nl = (struct files_name *) calloc(1, sizeof *nl); 345 if (nl == NULL) 346 err(EXIT_FAILURE, "calloc"); 347 nl->f_name = name; 348 STAILQ_INSERT_TAIL(&fntab, nl, f_next); 349 } 350 351 /* 352 * Find a device in the list of devices. 353 */ 354 static struct device * 355 finddev(struct device_head *dlist, char *name) 356 { 357 struct device *dp; 358 359 STAILQ_FOREACH(dp, dlist, d_next) 360 if (eq(dp->d_name, name)) 361 return (dp); 362 363 return (NULL); 364 } 365 366 /* 367 * Add a device to the list of devices. 368 */ 369 static void 370 newdev(char *name) 371 { 372 struct device *np; 373 374 if (finddev(&dtab, name)) { 375 fprintf(stderr, 376 "WARNING: duplicate device `%s' encountered.\n", name); 377 return; 378 } 379 380 np = (struct device *) calloc(1, sizeof *np); 381 if (np == NULL) 382 err(EXIT_FAILURE, "calloc"); 383 np->d_name = name; 384 STAILQ_INSERT_TAIL(&dtab, np, d_next); 385 } 386 387 /* 388 * Schedule a device to removal. 389 */ 390 static void 391 rmdev_schedule(struct device_head *dh, char *name) 392 { 393 struct device *dp; 394 395 dp = finddev(dh, name); 396 if (dp != NULL) { 397 STAILQ_REMOVE(dh, dp, device, d_next); 398 free(dp->d_name); 399 free(dp); 400 } 401 } 402 403 /* 404 * Find an option in the list of options. 405 */ 406 static struct opt * 407 findopt(struct opt_head *list, char *name) 408 { 409 struct opt *op; 410 411 SLIST_FOREACH(op, list, op_next) 412 if (eq(op->op_name, name)) 413 return (op); 414 415 return (NULL); 416 } 417 418 /* 419 * Add an option to the list of options. 420 */ 421 static void 422 newopt(struct opt_head *list, char *name, char *value, int append) 423 { 424 struct opt *op, *op2; 425 426 /* 427 * Ignore inclusions listed explicitly for configuration files. 428 */ 429 if (eq(name, OPT_AUTOGEN)) { 430 incignore = 1; 431 return; 432 } 433 434 op2 = findopt(list, name); 435 if (op2 != NULL && !append) { 436 fprintf(stderr, 437 "WARNING: duplicate option `%s' encountered.\n", name); 438 return; 439 } 440 441 op = (struct opt *)calloc(1, sizeof (struct opt)); 442 if (op == NULL) 443 err(EXIT_FAILURE, "calloc"); 444 op->op_name = name; 445 op->op_ownfile = 0; 446 op->op_value = value; 447 if (op2 != NULL) { 448 while (SLIST_NEXT(op2, op_append) != NULL) 449 op2 = SLIST_NEXT(op2, op_append); 450 SLIST_NEXT(op2, op_append) = op; 451 } else 452 SLIST_INSERT_HEAD(list, op, op_next); 453 } 454 455 /* 456 * Remove an option from the list of options. 457 */ 458 static void 459 rmopt_schedule(struct opt_head *list, char *name) 460 { 461 struct opt *op; 462 463 op = findopt(list, name); 464 if (op != NULL) { 465 SLIST_REMOVE(list, op, opt, op_next); 466 free(op->op_name); 467 free(op); 468 } 469 } 470