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 26 %token <str> ID 27 %token <val> NUMBER 28 29 %type <str> Save_id 30 %type <str> Opt_value 31 %type <str> Dev 32 33 %{ 34 35 /* 36 * Copyright (c) 1988, 1993 37 * The Regents of the University of California. All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the University of 50 * California, Berkeley and its contributors. 51 * 4. 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 <ctype.h> 72 #include <err.h> 73 #include <stdio.h> 74 #include <string.h> 75 76 #include "config.h" 77 78 struct device_head dtab; 79 char *ident; 80 char *env; 81 int envmode; 82 char *hints; 83 int hintmode; 84 int yyline; 85 const char *yyfile; 86 struct file_list_head ftab; 87 char errbuf[80]; 88 int maxusers; 89 90 #define ns(s) strdup(s) 91 int include(const char *, int); 92 void yyerror(const char *s); 93 94 static char * 95 devopt(char *dev) 96 { 97 char *ret = malloc(strlen(dev) + 5); 98 99 sprintf(ret, "DEV_%s", dev); 100 raisestr(ret); 101 return ret; 102 } 103 104 %} 105 %% 106 Configuration: 107 Many_specs 108 ; 109 110 Many_specs: 111 Many_specs Spec 112 | 113 /* lambda */ 114 ; 115 116 Spec: 117 Device_spec SEMICOLON 118 | 119 Config_spec SEMICOLON 120 | 121 SEMICOLON 122 | 123 error SEMICOLON 124 ; 125 126 Config_spec: 127 ARCH Save_id 128 = { 129 machinename = $2; 130 } | 131 CPU Save_id 132 = { 133 struct cputype *cp = 134 (struct cputype *)malloc(sizeof (struct cputype)); 135 memset(cp, 0, sizeof(*cp)); 136 cp->cpu_name = $2; 137 SLIST_INSERT_HEAD(&cputype, cp, cpu_next); 138 } | 139 OPTIONS Opt_list 140 | 141 NOOPTION Save_id 142 = { rmopt(&opt, $2); } | 143 MAKEOPTIONS Mkopt_list 144 | 145 NOMAKEOPTION Save_id 146 = { rmopt(&mkopt, $2); } | 147 IDENT ID 148 = { ident = $2; } | 149 System_spec 150 | 151 MAXUSERS NUMBER 152 = { maxusers = $2; } | 153 PROFILE NUMBER 154 = { profiling = $2; } | 155 ENV ID 156 = { 157 env = $2; 158 envmode = 1; 159 } | 160 HINTS ID 161 = { 162 hints = $2; 163 hintmode = 1; 164 } | 165 INCLUDE ID 166 = { include($2, 0); }; 167 168 System_spec: 169 CONFIG System_id System_parameter_list 170 = { errx(1, "%s:%d: root/dump/swap specifications obsolete", 171 yyfile, yyline);} 172 | 173 CONFIG System_id 174 ; 175 176 System_id: 177 Save_id 178 = { newopt(&mkopt, ns("KERNEL"), $1); }; 179 180 System_parameter_list: 181 System_parameter_list ID 182 | ID 183 ; 184 185 Opt_list: 186 Opt_list COMMA Option 187 | 188 Option 189 ; 190 191 Option: 192 Save_id 193 = { 194 char *s; 195 196 newopt(&opt, $1, NULL); 197 if ((s = strchr($1, '='))) 198 errx(1, "%s:%d: The `=' in options should not be " 199 "quoted", yyfile, yyline); 200 } | 201 Save_id EQUALS Opt_value 202 = { 203 newopt(&opt, $1, $3); 204 } ; 205 206 Opt_value: 207 ID 208 = { $$ = $1; } | 209 NUMBER 210 = { 211 char buf[80]; 212 213 (void) snprintf(buf, sizeof(buf), "%d", $1); 214 $$ = ns(buf); 215 } ; 216 217 Save_id: 218 ID 219 = { $$ = $1; } 220 ; 221 222 Mkopt_list: 223 Mkopt_list COMMA Mkoption 224 | 225 Mkoption 226 ; 227 228 Mkoption: 229 Save_id 230 = { newopt(&mkopt, $1, ns("")); } | 231 Save_id EQUALS Opt_value 232 = { newopt(&mkopt, $1, $3); } ; 233 234 Dev: 235 ID 236 = { $$ = $1; } 237 ; 238 239 Device_spec: 240 DEVICE Dev 241 = { 242 newopt(&opt, devopt($2), ns("1")); 243 /* and the device part */ 244 newdev($2, UNKNOWN); 245 } | 246 DEVICE Dev NUMBER 247 = { 248 newopt(&opt, devopt($2), ns("1")); 249 /* and the device part */ 250 newdev($2, $3); 251 if ($3 == 0) 252 errx(1, "%s:%d: devices with zero units are not " 253 "likely to be correct", yyfile, yyline); 254 } | 255 NODEVICE Dev 256 = { 257 char *s = devopt($2); 258 259 rmopt(&opt, s); 260 free(s); 261 /* and the device part */ 262 rmdev($2); 263 } ; 264 265 %% 266 267 void 268 yyerror(const char *s) 269 { 270 271 errx(1, "%s:%d: %s", yyfile, yyline + 1, s); 272 } 273 274 /* 275 * add a device to the list of devices 276 */ 277 static void 278 newdev(char *name, int count) 279 { 280 struct device *np; 281 282 np = (struct device *) malloc(sizeof *np); 283 memset(np, 0, sizeof(*np)); 284 np->d_name = name; 285 np->d_count = count; 286 STAILQ_INSERT_TAIL(&dtab, np, d_next); 287 } 288 289 /* 290 * remove a device from the list of devices 291 */ 292 static void 293 rmdev(char *name) 294 { 295 struct device *dp, *rmdp; 296 297 STAILQ_FOREACH(dp, &dtab, d_next) { 298 if (eq(dp->d_name, name)) { 299 rmdp = dp; 300 dp = STAILQ_NEXT(dp, d_next); 301 STAILQ_REMOVE(&dtab, rmdp, device, d_next); 302 free(rmdp->d_name); 303 free(rmdp); 304 if (dp == NULL) 305 break; 306 } 307 } 308 } 309 310 static void 311 newopt(struct opt_head *list, char *name, char *value) 312 { 313 struct opt *op; 314 315 op = (struct opt *)malloc(sizeof (struct opt)); 316 memset(op, 0, sizeof(*op)); 317 op->op_name = name; 318 op->op_ownfile = 0; 319 op->op_value = value; 320 SLIST_INSERT_HEAD(list, op, op_next); 321 } 322 323 static void 324 rmopt(struct opt_head *list, char *name) 325 { 326 struct opt *op, *rmop; 327 328 SLIST_FOREACH(op, list, op_next) { 329 if (eq(op->op_name, name)) { 330 rmop = op; 331 op = SLIST_NEXT(op, op_next); 332 SLIST_REMOVE(list, rmop, opt, op_next); 333 free(rmop->op_name); 334 if (rmop->op_value != NULL) 335 free(rmop->op_value); 336 free(rmop); 337 if (op == NULL) 338 break; 339 } 340 } 341 } 342