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 ENVVAR 16 %token EQUALS 17 %token PLUSEQUALS 18 %token HINTS 19 %token IDENT 20 %token MAXUSERS 21 %token PROFILE 22 %token OPTIONS 23 %token NOOPTION 24 %token MAKEOPTIONS 25 %token NOMAKEOPTION 26 %token SEMICOLON 27 %token INCLUDE 28 %token FILES 29 30 %token <str> ENVLINE 31 %token <str> ID 32 %token <val> NUMBER 33 34 %type <str> Save_id 35 %type <str> Opt_value 36 %type <str> Dev 37 %token <str> PATH 38 39 %{ 40 41 /*- 42 * SPDX-License-Identifier: BSD-3-Clause 43 * 44 * Copyright (c) 1988, 1993 45 * The Regents of the University of California. All rights reserved. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)config.y 8.1 (Berkeley) 6/6/93 72 * $FreeBSD$ 73 */ 74 75 #include <assert.h> 76 #include <ctype.h> 77 #include <err.h> 78 #include <stdio.h> 79 #include <string.h> 80 81 #include "config.h" 82 83 struct device_head dtab; 84 char *ident; 85 int envmode; 86 int hintmode; 87 int yyline; 88 const char *yyfile; 89 struct file_list_head ftab; 90 struct files_name_head fntab; 91 char errbuf[80]; 92 int maxusers; 93 94 #define ns(s) strdup(s) 95 int include(const char *, int); 96 void yyerror(const char *s); 97 int yywrap(void); 98 99 static void newdev(char *name); 100 static void newfile(char *name); 101 static void newenvvar(char *name, bool is_file); 102 static void rmdev_schedule(struct device_head *dh, char *name); 103 static void newopt(struct opt_head *list, char *name, char *value, int append); 104 static void rmopt_schedule(struct opt_head *list, char *name); 105 106 static char * 107 devopt(char *dev) 108 { 109 char *ret = malloc(strlen(dev) + 5); 110 111 sprintf(ret, "DEV_%s", dev); 112 raisestr(ret); 113 return ret; 114 } 115 116 %} 117 %% 118 Configuration: 119 Many_specs 120 ; 121 122 Many_specs: 123 Many_specs Spec 124 | 125 /* lambda */ 126 ; 127 128 Spec: 129 Device_spec SEMICOLON 130 | 131 Config_spec SEMICOLON 132 | 133 INCLUDE PATH SEMICOLON { 134 if (incignore == 0) 135 include($2, 0); 136 }; 137 | 138 INCLUDE ID SEMICOLON { 139 if (incignore == 0) 140 include($2, 0); 141 }; 142 | 143 FILES ID SEMICOLON { newfile($2); }; 144 | 145 SEMICOLON 146 | 147 error SEMICOLON 148 ; 149 150 Config_spec: 151 ARCH Save_id { 152 if (machinename != NULL && !eq($2, machinename)) 153 errx(1, "%s:%d: only one machine directive is allowed", 154 yyfile, yyline); 155 machinename = $2; 156 machinearch = $2; 157 } | 158 ARCH Save_id Save_id { 159 if (machinename != NULL && 160 !(eq($2, machinename) && eq($3, machinearch))) 161 errx(1, "%s:%d: only one machine directive is allowed", 162 yyfile, yyline); 163 machinename = $2; 164 machinearch = $3; 165 } | 166 CPU Save_id { 167 struct cputype *cp = 168 (struct cputype *)calloc(1, sizeof (struct cputype)); 169 if (cp == NULL) 170 err(EXIT_FAILURE, "calloc"); 171 cp->cpu_name = $2; 172 SLIST_INSERT_HEAD(&cputype, cp, cpu_next); 173 } | 174 NOCPU Save_id { 175 struct cputype *cp, *cp2; 176 SLIST_FOREACH_SAFE(cp, &cputype, cpu_next, cp2) { 177 if (eq(cp->cpu_name, $2)) { 178 SLIST_REMOVE(&cputype, cp, cputype, cpu_next); 179 free(cp); 180 } 181 } 182 } | 183 OPTIONS Opt_list 184 | 185 NOOPTION NoOpt_list | 186 MAKEOPTIONS Mkopt_list 187 | 188 NOMAKEOPTION Save_id { rmopt_schedule(&mkopt, $2); } | 189 IDENT ID { ident = $2; } | 190 System_spec 191 | 192 MAXUSERS NUMBER { maxusers = $2; } | 193 PROFILE NUMBER { profiling = $2; } | 194 ENV ID { newenvvar($2, true); } | 195 ENVVAR ENVLINE { newenvvar($2, false); } | 196 HINTS ID { 197 struct hint *hint; 198 199 hint = (struct hint *)calloc(1, sizeof (struct hint)); 200 if (hint == NULL) 201 err(EXIT_FAILURE, "calloc"); 202 hint->hint_name = $2; 203 STAILQ_INSERT_TAIL(&hints, hint, hint_next); 204 hintmode = 1; 205 } 206 207 System_spec: 208 CONFIG System_id System_parameter_list { 209 errx(1, "%s:%d: root/dump/swap specifications obsolete", 210 yyfile, yyline); 211 } 212 | 213 CONFIG System_id 214 ; 215 216 System_id: 217 Save_id { newopt(&mkopt, ns("KERNEL"), $1, 0); }; 218 219 System_parameter_list: 220 System_parameter_list ID 221 | ID 222 ; 223 224 Opt_list: 225 Opt_list COMMA Option 226 | 227 Option 228 ; 229 230 NoOpt_list: 231 NoOpt_list COMMA NoOption 232 | 233 NoOption 234 ; 235 Option: 236 Save_id { 237 newopt(&opt, $1, NULL, 0); 238 if (strchr($1, '=') != NULL) 239 errx(1, "%s:%d: The `=' in options should not be " 240 "quoted", yyfile, yyline); 241 } | 242 Save_id EQUALS Opt_value { 243 newopt(&opt, $1, $3, 0); 244 } ; 245 246 NoOption: 247 Save_id { 248 rmopt_schedule(&opt, $1); 249 }; 250 251 Opt_value: 252 ID { $$ = $1; } | 253 NUMBER { 254 char buf[80]; 255 256 (void) snprintf(buf, sizeof(buf), "%d", $1); 257 $$ = ns(buf); 258 } ; 259 260 Save_id: 261 ID { $$ = $1; } 262 ; 263 264 Mkopt_list: 265 Mkopt_list COMMA Mkoption 266 | 267 Mkoption 268 ; 269 270 Mkoption: 271 Save_id { newopt(&mkopt, $1, ns(""), 0); } | 272 Save_id EQUALS { newopt(&mkopt, $1, ns(""), 0); } | 273 Save_id EQUALS Opt_value { newopt(&mkopt, $1, $3, 0); } | 274 Save_id PLUSEQUALS Opt_value { newopt(&mkopt, $1, $3, 1); } ; 275 276 Dev: 277 ID { $$ = $1; } 278 ; 279 280 Device_spec: 281 DEVICE Dev_list 282 | 283 NODEVICE NoDev_list 284 ; 285 286 Dev_list: 287 Dev_list COMMA Device 288 | 289 Device 290 ; 291 292 NoDev_list: 293 NoDev_list COMMA NoDevice 294 | 295 NoDevice 296 ; 297 298 Device: 299 Dev { 300 newopt(&opt, devopt($1), ns("1"), 0); 301 /* and the device part */ 302 newdev($1); 303 } 304 305 NoDevice: 306 Dev { 307 char *s = devopt($1); 308 309 rmopt_schedule(&opt, s); 310 free(s); 311 /* and the device part */ 312 rmdev_schedule(&dtab, $1); 313 } ; 314 315 %% 316 317 void 318 yyerror(const char *s) 319 { 320 321 errx(1, "%s:%d: %s", yyfile, yyline + 1, s); 322 } 323 324 int 325 yywrap(void) 326 { 327 if (found_defaults) { 328 if (freopen(PREFIX, "r", stdin) == NULL) 329 err(2, "%s", PREFIX); 330 yyfile = PREFIX; 331 yyline = 0; 332 found_defaults = 0; 333 return 0; 334 } 335 return 1; 336 } 337 338 /* 339 * Add a new file to the list of files. 340 */ 341 static void 342 newfile(char *name) 343 { 344 struct files_name *nl; 345 346 nl = (struct files_name *) calloc(1, sizeof *nl); 347 if (nl == NULL) 348 err(EXIT_FAILURE, "calloc"); 349 nl->f_name = name; 350 STAILQ_INSERT_TAIL(&fntab, nl, f_next); 351 } 352 353 static void 354 newenvvar(char *name, bool is_file) 355 { 356 struct envvar *envvar; 357 358 envvar = (struct envvar *)calloc(1, sizeof (struct envvar)); 359 if (envvar == NULL) 360 err(EXIT_FAILURE, "calloc"); 361 envvar->env_str = name; 362 envvar->env_is_file = is_file; 363 STAILQ_INSERT_TAIL(&envvars, envvar, envvar_next); 364 envmode = 1; 365 } 366 367 /* 368 * Find a device in the list of devices. 369 */ 370 static struct device * 371 finddev(struct device_head *dlist, char *name) 372 { 373 struct device *dp; 374 375 STAILQ_FOREACH(dp, dlist, d_next) 376 if (eq(dp->d_name, name)) 377 return (dp); 378 379 return (NULL); 380 } 381 382 /* 383 * Add a device to the list of devices. 384 */ 385 static void 386 newdev(char *name) 387 { 388 struct device *np; 389 390 if (finddev(&dtab, name)) { 391 fprintf(stderr, 392 "WARNING: duplicate device `%s' encountered.\n", name); 393 return; 394 } 395 396 np = (struct device *) calloc(1, sizeof *np); 397 if (np == NULL) 398 err(EXIT_FAILURE, "calloc"); 399 np->d_name = name; 400 STAILQ_INSERT_TAIL(&dtab, np, d_next); 401 } 402 403 /* 404 * Schedule a device to removal. 405 */ 406 static void 407 rmdev_schedule(struct device_head *dh, char *name) 408 { 409 struct device *dp; 410 411 dp = finddev(dh, name); 412 if (dp != NULL) { 413 STAILQ_REMOVE(dh, dp, device, d_next); 414 free(dp->d_name); 415 free(dp); 416 } 417 } 418 419 /* 420 * Find an option in the list of options. 421 */ 422 static struct opt * 423 findopt(struct opt_head *list, char *name) 424 { 425 struct opt *op; 426 427 SLIST_FOREACH(op, list, op_next) 428 if (eq(op->op_name, name)) 429 return (op); 430 431 return (NULL); 432 } 433 434 /* 435 * Add an option to the list of options. 436 */ 437 static void 438 newopt(struct opt_head *list, char *name, char *value, int append) 439 { 440 struct opt *op, *op2; 441 442 /* 443 * Ignore inclusions listed explicitly for configuration files. 444 */ 445 if (eq(name, OPT_AUTOGEN)) { 446 incignore = 1; 447 return; 448 } 449 450 op2 = findopt(list, name); 451 if (op2 != NULL && !append) { 452 fprintf(stderr, 453 "WARNING: duplicate option `%s' encountered.\n", name); 454 return; 455 } 456 457 op = (struct opt *)calloc(1, sizeof (struct opt)); 458 if (op == NULL) 459 err(EXIT_FAILURE, "calloc"); 460 op->op_name = name; 461 op->op_ownfile = 0; 462 op->op_value = value; 463 if (op2 != NULL) { 464 while (SLIST_NEXT(op2, op_append) != NULL) 465 op2 = SLIST_NEXT(op2, op_append); 466 SLIST_NEXT(op2, op_append) = op; 467 } else 468 SLIST_INSERT_HEAD(list, op, op_next); 469 } 470 471 /* 472 * Remove an option from the list of options. 473 */ 474 static void 475 rmopt_schedule(struct opt_head *list, char *name) 476 { 477 struct opt *op; 478 479 op = findopt(list, name); 480 if (op != NULL) { 481 SLIST_REMOVE(list, op, opt, op_next); 482 free(op->op_name); 483 free(op); 484 } 485 } 486