devopen.c revision 1.6
1 /* $NetBSD: devopen.c,v 1.6 2003/11/14 16:52:40 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1993 John Brezak 41 * 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. The name of the author may not be used to endorse or promote products 52 * derived from this software without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR 55 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 56 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 57 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 58 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 59 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 60 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 62 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 63 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 64 * POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67 #include <sys/param.h> 68 #include <sys/reboot.h> 69 70 #include <lib/libkern/libkern.h> 71 72 #include <lib/libsa/stand.h> 73 #include <hp300/stand/common/samachdep.h> 74 75 u_int opendev; 76 77 #define ispart(c) ((c) >= 'a' && (c) <= 'h') 78 79 static void usage(void); 80 static int devlookup(const char * ,int); 81 static int devparse(const char *, int *, int*, int*, int*, int*, char **); 82 83 int 84 atoi(char *cp) 85 { 86 int val = 0; 87 88 while (isdigit(*cp)) 89 val = val * 10 + (*cp++ - '0'); 90 return val; 91 } 92 93 void 94 usage(void) 95 { 96 97 printf("Usage: device(adaptor, controller, drive, partition)file\n" 98 " <device><unit><partitionletter>:file\n"); 99 } 100 101 static int 102 devlookup(d, len) 103 const char *d; 104 int len; 105 { 106 struct devsw *dp = devsw; 107 int i; 108 109 for (i = 0; i < ndevs; i++, dp++) { 110 if (dp->dv_name && strncmp(dp->dv_name, d, len) == 0) { 111 /* 112 * Set the filesystem and startup up according to 113 * the device being opened. 114 */ 115 switch (i) { 116 case 0: /* ct */ 117 memcpy(file_system, file_system_rawfs, 118 sizeof(struct fs_ops)); 119 break; 120 121 case 2: /* rd */ 122 case 4: /* sd */ 123 memcpy(file_system, file_system_ufs, 124 sizeof(struct fs_ops)); 125 break; 126 127 case 6: /* le */ 128 memcpy(file_system, file_system_nfs, 129 sizeof(struct fs_ops)); 130 break; 131 132 default: 133 /* Agh! What happened?! */ 134 goto bad; 135 } 136 return i; 137 } 138 } 139 140 bad: 141 printf("No such device - Configured devices are:\n"); 142 for (dp = devsw, i = 0; i < ndevs; i++, dp++) 143 if (dp->dv_name) 144 printf(" %s", dp->dv_name); 145 printf("\n"); 146 errno = ENODEV; 147 return -1; 148 } 149 150 /* 151 * Parse a device spec in one of two forms. 152 * 153 * dev(adapt, ctlr, unit, part)file 154 * [A-Za-z]*[0-9]*[A-Za-z]:file 155 * dev unit part 156 */ 157 static int 158 devparse(fname, dev, adapt, ctlr, unit, part, file) 159 const char *fname; 160 int *dev, *adapt, *ctlr, *unit, *part; 161 char **file; 162 { 163 int i; 164 char *s, *args[4]; 165 166 /* get device name */ 167 for (s = (char *)fname; *s && *s != '/' && *s != ':' && *s != '('; s++) 168 ; 169 170 /* first form */ 171 if (*s == '(') { 172 /* lookup device and get index */ 173 if ((*dev = devlookup(fname, s - fname)) < 0) 174 goto baddev; 175 176 /* tokenize device ident */ 177 args[0] = ++s; 178 for (args[0] = s, i = 1; *s && *s != ')'; s++) { 179 if (*s == ',') 180 args[i++] = ++s; 181 } 182 switch(i) { 183 case 4: 184 *adapt = atoi(args[0]); 185 *ctlr = atoi(args[1]); 186 *unit = atoi(args[2]); 187 *part = atoi(args[3]); 188 break; 189 case 3: 190 *ctlr = atoi(args[0]); 191 *unit = atoi(args[1]); 192 *part = atoi(args[2]); 193 break; 194 case 2: 195 *unit = atoi(args[0]); 196 *part = atoi(args[1]); 197 break; 198 case 1: 199 *part = atoi(args[0]); 200 break; 201 case 0: 202 break; 203 } 204 *file = ++s; 205 } 206 207 /* second form */ 208 else if (*s == ':') { 209 int temp; 210 211 /* isolate device */ 212 for (s = (char *)fname; *s != ':' && !isdigit(*s); s++); 213 214 /* lookup device and get index */ 215 if ((*dev = devlookup(fname, s - fname)) < 0) 216 goto baddev; 217 218 /* isolate unit */ 219 if ((temp = atoi(s)) > 255) 220 goto bad; 221 *adapt = temp / 8; 222 *ctlr = temp % 8; 223 for (; isdigit(*s); s++) 224 ; 225 226 /* translate partition */ 227 if (!ispart(*s)) 228 goto bad; 229 230 *part = *s++ - 'a'; 231 if (*s != ':') 232 goto bad; 233 *file = ++s; 234 } 235 236 /* no device present */ 237 else 238 *file = (char *)fname; 239 240 /* return the remaining unparsed part as the file to boot */ 241 return 0; 242 243 bad: 244 usage(); 245 246 baddev: 247 return -1; 248 } 249 250 251 int 252 devopen(f, fname, file) 253 struct open_file *f; 254 const char *fname; 255 char **file; 256 { 257 int error; 258 int dev, adapt, ctlr, unit, part; 259 struct devsw *dp = &devsw[0]; 260 261 dev = B_TYPE(bootdev); 262 adapt = B_ADAPTOR(bootdev); 263 ctlr = B_CONTROLLER(bootdev); 264 unit = B_UNIT(bootdev); 265 part = B_PARTITION(bootdev); 266 267 if ((error = devparse(fname, &dev, &adapt, &ctlr, &unit, &part, file)) 268 != 0) 269 return error; 270 271 /* 272 * Set up filesystem type based on what device we're opening. 273 */ 274 switch (dev) { 275 case 0: /* ct */ 276 memcpy(file_system, file_system_rawfs, sizeof(struct fs_ops)); 277 break; 278 279 case 2: /* rd */ 280 case 4: /* sd */ 281 memcpy(file_system, file_system_ufs, sizeof(struct fs_ops)); 282 break; 283 284 case 6: /* le */ 285 memcpy(file_system, file_system_nfs, sizeof(struct fs_ops)); 286 break; 287 288 default: 289 /* XXX what else should we do here? */ 290 printf("WARNING: BOGUS BOOT DEV TYPE 0x%x!\n", dev); 291 return EIO; 292 } 293 294 dp = &devsw[dev]; 295 296 if (!dp->dv_open) 297 return ENODEV; 298 299 f->f_dev = dp; 300 301 if ((error = (*dp->dv_open)(f, adapt, ctlr, part)) == 0) { 302 if ((error = 303 (*punitsw[dev].p_punit)(adapt, ctlr, &unit)) != 0) { 304 goto bad; 305 } 306 opendev = MAKEBOOTDEV(dev, adapt, ctlr, unit, part); 307 return 0; 308 } 309 310 bad: 311 printf("%s(%d,%d,%d,%d): %s\n", devsw[dev].dv_name, 312 adapt, ctlr, unit, part, strerror(error)); 313 314 return error; 315 } 316
Indexes created Fri Sep 26 08:10:20 GMT 2025