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. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. 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 char *env; 86 int envmode; 87 int hintmode; 88 int yyline; 89 const char *yyfile; 90 struct file_list_head ftab; 91 struct files_name_head fntab; 92 char errbuf[80]; 93 int maxusers; 94 95 #define ns(s) strdup(s) 96 int include(const char *, int); 97 void yyerror(const char *s); 98 int yywrap(void); 99 100 static void newdev(char *name); 101 static void newfile(char *name); 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 Save_id { rmopt_schedule(&opt, $2); } | 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 { 195 env = $2; 196 envmode = 1; 197 } | 198 HINTS ID { 199 struct hint *hint; 200 201 hint = (struct hint *)calloc(1, sizeof (struct hint)); 202 if (hint == NULL) 203 err(EXIT_FAILURE, "calloc"); 204 hint->hint_name = $2; 205 STAILQ_INSERT_TAIL(&hints, hint, hint_next); 206 hintmode = 1; 207 } 208 209 System_spec: 210 CONFIG System_id System_parameter_list { 211 errx(1, "%s:%d: root/dump/swap specifications obsolete", 212 yyfile, yyline); 213 } 214 | 215 CONFIG System_id 216 ; 217 218 System_id: 219 Save_id { newopt(&mkopt, ns("KERNEL"), $1, 0); }; 220 221 System_parameter_list: 222 System_parameter_list ID 223 | ID 224 ; 225 226 Opt_list: 227 Opt_list COMMA Option 228 | 229 Option 230 ; 231 232 Option: 233 Save_id { 234 newopt(&opt, $1, NULL, 0); 235 if (strchr($1, '=') != NULL) 236 errx(1, "%s:%d: The `=' in options should not be " 237 "quoted", yyfile, yyline); 238 } | 239 Save_id EQUALS Opt_value { 240 newopt(&opt, $1, $3, 0); 241 } ; 242 243 Opt_value: 244 ID { $$ = $1; } | 245 NUMBER { 246 char buf[80]; 247 248 (void) snprintf(buf, sizeof(buf), "%d", $1); 249 $$ = ns(buf); 250 } ; 251 252 Save_id: 253 ID { $$ = $1; } 254 ; 255 256 Mkopt_list: 257 Mkopt_list COMMA Mkoption 258 | 259 Mkoption 260 ; 261 262 Mkoption: 263 Save_id { newopt(&mkopt, $1, ns(""), 0); } | 264 Save_id EQUALS { newopt(&mkopt, $1, ns(""), 0); } | 265 Save_id EQUALS Opt_value { newopt(&mkopt, $1, $3, 0); } | 266 Save_id PLUSEQUALS Opt_value { newopt(&mkopt, $1, $3, 1); } ; 267 268 Dev: 269 ID { $$ = $1; } 270 ; 271 272 Device_spec: 273 DEVICE Dev_list 274 | 275 NODEVICE NoDev_list 276 ; 277 278 Dev_list: 279 Dev_list COMMA Device 280 | 281 Device 282 ; 283 284 NoDev_list: 285 NoDev_list COMMA NoDevice 286 | 287 NoDevice 288 ; 289 290 Device: 291 Dev { 292 newopt(&opt, devopt($1), ns("1"), 0); 293 /* and the device part */ 294 newdev($1); 295 } 296 297 NoDevice: 298 Dev { 299 char *s = devopt($1); 300 301 rmopt_schedule(&opt, s); 302 free(s); 303 /* and the device part */ 304 rmdev_schedule(&dtab, $1); 305 } ; 306 307 %% 308 309 void 310 yyerror(const char *s) 311 { 312 313 errx(1, "%s:%d: %s", yyfile, yyline + 1, s); 314 } 315 316 int 317 yywrap(void) 318 { 319 if (found_defaults) { 320 if (freopen(PREFIX, "r", stdin) == NULL) 321 err(2, "%s", PREFIX); 322 yyfile = PREFIX; 323 yyline = 0; 324 found_defaults = 0; 325 return 0; 326 } 327 return 1; 328 } 329 330 /* 331 * Add a new file to the list of files. 332 */ 333 static void 334 newfile(char *name) 335 { 336 struct files_name *nl; 337 338 nl = (struct files_name *) calloc(1, sizeof *nl); 339 if (nl == NULL) 340 err(EXIT_FAILURE, "calloc"); 341 nl->f_name = name; 342 STAILQ_INSERT_TAIL(&fntab, nl, f_next); 343 } 344 345 /* 346 * Find a device in the list of devices. 347 */ 348 static struct device * 349 finddev(struct device_head *dlist, char *name) 350 { 351 struct device *dp; 352 353 STAILQ_FOREACH(dp, dlist, d_next) 354 if (eq(dp->d_name, name)) 355 return (dp); 356 357 return (NULL); 358 } 359 360 /* 361 * Add a device to the list of devices. 362 */ 363 static void 364 newdev(char *name) 365 { 366 struct device *np; 367 368 if (finddev(&dtab, name)) { 369 fprintf(stderr, 370 "WARNING: duplicate device `%s' encountered.\n", name); 371 return; 372 } 373 374 np = (struct device *) calloc(1, sizeof *np); 375 if (np == NULL) 376 err(EXIT_FAILURE, "calloc"); 377 np->d_name = name; 378 STAILQ_INSERT_TAIL(&dtab, np, d_next); 379 } 380 381 /* 382 * Schedule a device to removal. 383 */ 384 static void 385 rmdev_schedule(struct device_head *dh, char *name) 386 { 387 struct device *dp; 388 389 dp = finddev(dh, name); 390 if (dp != NULL) { 391 STAILQ_REMOVE(dh, dp, device, d_next); 392 free(dp->d_name); 393 free(dp); 394 } 395 } 396 397 /* 398 * Find an option in the list of options. 399 */ 400 static struct opt * 401 findopt(struct opt_head *list, char *name) 402 { 403 struct opt *op; 404 405 SLIST_FOREACH(op, list, op_next) 406 if (eq(op->op_name, name)) 407 return (op); 408 409 return (NULL); 410 } 411 412 /* 413 * Add an option to the list of options. 414 */ 415 static void 416 newopt(struct opt_head *list, char *name, char *value, int append) 417 { 418 struct opt *op, *op2; 419 420 /* 421 * Ignore inclusions listed explicitly for configuration files. 422 */ 423 if (eq(name, OPT_AUTOGEN)) { 424 incignore = 1; 425 return; 426 } 427 428 op2 = findopt(list, name); 429 if (op2 != NULL && !append) { 430 fprintf(stderr, 431 "WARNING: duplicate option `%s' encountered.\n", name); 432 return; 433 } 434 435 op = (struct opt *)calloc(1, sizeof (struct opt)); 436 if (op == NULL) 437 err(EXIT_FAILURE, "calloc"); 438 op->op_name = name; 439 op->op_ownfile = 0; 440 op->op_value = value; 441 if (op2 != NULL) { 442 while (SLIST_NEXT(op2, op_append) != NULL) 443 op2 = SLIST_NEXT(op2, op_append); 444 SLIST_NEXT(op2, op_append) = op; 445 } else 446 SLIST_INSERT_HEAD(list, op, op_next); 447 } 448 449 /* 450 * Remove an option from the list of options. 451 */ 452 static void 453 rmopt_schedule(struct opt_head *list, char *name) 454 { 455 struct opt *op; 456 457 op = findopt(list, name); 458 if (op != NULL) { 459 SLIST_REMOVE(list, op, opt, op_next); 460 free(op->op_name); 461 free(op); 462 } 463 } 464