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