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 DEVICE 12 %token NODEVICE 13 %token ENV 14 %token EQUALS 15 %token HINTS 16 %token IDENT 17 %token MAXUSERS 18 %token PROFILE 19 %token OPTIONS 20 %token NOOPTION 21 %token MAKEOPTIONS 22 %token NOMAKEOPTION 23 %token SEMICOLON 24 %token INCLUDE 25 %token FILES 26 27 %token <str> ID 28 %token <val> NUMBER 29 30 %type <str> Save_id 31 %type <str> Opt_value 32 %type <str> Dev 33 34 %{ 35 36 /* 37 * Copyright (c) 1988, 1993 38 * The Regents of the University of California. All rights reserved. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. All advertising materials mentioning features or use of this software 49 * must display the following acknowledgement: 50 * This product includes software developed by the University of 51 * California, Berkeley and its contributors. 52 * 4. Neither the name of the University nor the names of its contributors 53 * may be used to endorse or promote products derived from this software 54 * without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 57 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 58 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 59 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 60 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 61 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 62 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 63 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 64 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 65 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 66 * SUCH DAMAGE. 67 * 68 * @(#)config.y 8.1 (Berkeley) 6/6/93 69 * $FreeBSD$ 70 */ 71 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 char *hints; 84 int hintmode; 85 int yyline; 86 const char *yyfile; 87 struct file_list_head ftab; 88 struct files_name_head fntab; 89 char errbuf[80]; 90 int maxusers; 91 92 #define ns(s) strdup(s) 93 int include(const char *, int); 94 void yyerror(const char *s); 95 96 static char * 97 devopt(char *dev) 98 { 99 char *ret = malloc(strlen(dev) + 5); 100 101 sprintf(ret, "DEV_%s", dev); 102 raisestr(ret); 103 return ret; 104 } 105 106 %} 107 %% 108 Configuration: 109 Many_specs 110 ; 111 112 Many_specs: 113 Many_specs Spec 114 | 115 /* lambda */ 116 ; 117 118 Spec: 119 Device_spec SEMICOLON 120 | 121 Config_spec SEMICOLON 122 | 123 INCLUDE ID SEMICOLON 124 = { include($2, 0); }; 125 | 126 FILES ID SEMICOLON 127 = { newfile($2); }; 128 | 129 SEMICOLON 130 | 131 error SEMICOLON 132 ; 133 134 Config_spec: 135 ARCH Save_id 136 = { 137 if (machinename != NULL) 138 errx(1, "%s:%d: only one machine directive is allowed", 139 yyfile, yyline); 140 machinename = $2; 141 } | 142 CPU Save_id 143 = { 144 struct cputype *cp = 145 (struct cputype *)malloc(sizeof (struct cputype)); 146 memset(cp, 0, sizeof(*cp)); 147 cp->cpu_name = $2; 148 SLIST_INSERT_HEAD(&cputype, cp, cpu_next); 149 } | 150 OPTIONS Opt_list 151 | 152 NOOPTION Save_id 153 = { rmopt(&opt, $2); } | 154 MAKEOPTIONS Mkopt_list 155 | 156 NOMAKEOPTION Save_id 157 = { rmopt(&mkopt, $2); } | 158 IDENT ID 159 = { ident = $2; } | 160 System_spec 161 | 162 MAXUSERS NUMBER 163 = { maxusers = $2; } | 164 PROFILE NUMBER 165 = { profiling = $2; } | 166 ENV ID 167 = { 168 env = $2; 169 envmode = 1; 170 } | 171 HINTS ID 172 = { 173 hints = $2; 174 hintmode = 1; 175 } 176 177 System_spec: 178 CONFIG System_id System_parameter_list 179 = { errx(1, "%s:%d: root/dump/swap specifications obsolete", 180 yyfile, yyline);} 181 | 182 CONFIG System_id 183 ; 184 185 System_id: 186 Save_id 187 = { newopt(&mkopt, ns("KERNEL"), $1); }; 188 189 System_parameter_list: 190 System_parameter_list ID 191 | ID 192 ; 193 194 Opt_list: 195 Opt_list COMMA Option 196 | 197 Option 198 ; 199 200 Option: 201 Save_id 202 = { 203 char *s; 204 205 newopt(&opt, $1, NULL); 206 if ((s = strchr($1, '='))) 207 errx(1, "%s:%d: The `=' in options should not be " 208 "quoted", yyfile, yyline); 209 } | 210 Save_id EQUALS Opt_value 211 = { 212 newopt(&opt, $1, $3); 213 } ; 214 215 Opt_value: 216 ID 217 = { $$ = $1; } | 218 NUMBER 219 = { 220 char buf[80]; 221 222 (void) snprintf(buf, sizeof(buf), "%d", $1); 223 $$ = ns(buf); 224 } ; 225 226 Save_id: 227 ID 228 = { $$ = $1; } 229 ; 230 231 Mkopt_list: 232 Mkopt_list COMMA Mkoption 233 | 234 Mkoption 235 ; 236 237 Mkoption: 238 Save_id 239 = { newopt(&mkopt, $1, ns("")); } | 240 Save_id EQUALS Opt_value 241 = { newopt(&mkopt, $1, $3); } ; 242 243 Dev: 244 ID 245 = { $$ = $1; } 246 ; 247 248 Device_spec: 249 DEVICE Dev 250 = { 251 newopt(&opt, devopt($2), ns("1")); 252 /* and the device part */ 253 newdev($2, UNKNOWN); 254 } | 255 DEVICE Dev NUMBER 256 = { 257 newopt(&opt, devopt($2), ns("1")); 258 /* and the device part */ 259 newdev($2, $3); 260 if ($3 == 0) 261 errx(1, "%s:%d: devices with zero units are not " 262 "likely to be correct", yyfile, yyline); 263 } | 264 NODEVICE Dev 265 = { 266 char *s = devopt($2); 267 268 rmopt(&opt, s); 269 free(s); 270 /* and the device part */ 271 rmdev($2); 272 } ; 273 274 %% 275 276 void 277 yyerror(const char *s) 278 { 279 280 errx(1, "%s:%d: %s", yyfile, yyline + 1, s); 281 } 282 283 /* 284 * Add a new file to the list of files. 285 */ 286 static void 287 newfile(char *name) 288 { 289 struct files_name *nl; 290 291 nl = (struct files_name *) malloc(sizeof *nl); 292 bzero(nl, sizeof *nl); 293 nl->f_name = name; 294 STAILQ_INSERT_TAIL(&fntab, nl, f_next); 295 } 296 297 /* 298 * add a device to the list of devices 299 */ 300 static void 301 newdev(char *name, int count) 302 { 303 struct device *np; 304 305 np = (struct device *) malloc(sizeof *np); 306 memset(np, 0, sizeof(*np)); 307 np->d_name = name; 308 np->d_count = count; 309 STAILQ_INSERT_TAIL(&dtab, np, d_next); 310 } 311 312 /* 313 * remove a device from the list of devices 314 */ 315 static void 316 rmdev(char *name) 317 { 318 struct device *dp, *rmdp; 319 320 STAILQ_FOREACH(dp, &dtab, d_next) { 321 if (eq(dp->d_name, name)) { 322 rmdp = dp; 323 dp = STAILQ_NEXT(dp, d_next); 324 STAILQ_REMOVE(&dtab, rmdp, device, d_next); 325 free(rmdp->d_name); 326 free(rmdp); 327 if (dp == NULL) 328 break; 329 } 330 } 331 } 332 333 static void 334 newopt(struct opt_head *list, char *name, char *value) 335 { 336 struct opt *op; 337 338 op = (struct opt *)malloc(sizeof (struct opt)); 339 memset(op, 0, sizeof(*op)); 340 op->op_name = name; 341 op->op_ownfile = 0; 342 op->op_value = value; 343 SLIST_INSERT_HEAD(list, op, op_next); 344 } 345 346 static void 347 rmopt(struct opt_head *list, char *name) 348 { 349 struct opt *op, *rmop; 350 351 SLIST_FOREACH(op, list, op_next) { 352 if (eq(op->op_name, name)) { 353 rmop = op; 354 op = SLIST_NEXT(op, op_next); 355 SLIST_REMOVE(list, rmop, opt, op_next); 356 free(rmop->op_name); 357 if (rmop->op_value != NULL) 358 free(rmop->op_value); 359 free(rmop); 360 if (op == NULL) 361 break; 362 } 363 } 364 } 365