| 1 | /*␊ |
| 2 | * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * This file contains Original Code and/or Modifications of Original Code␊ |
| 7 | * as defined in and that are subject to the Apple Public Source License␊ |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
| 9 | * compliance with the License. Please obtain a copy of the License at␊ |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this␊ |
| 11 | * file.␊ |
| 12 | * ␊ |
| 13 | * The Original Code and all software distributed under the License are␊ |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
| 18 | * Please see the License for the specific language governing rights and␊ |
| 19 | * limitations under the License.␊ |
| 20 | * ␊ |
| 21 | * @APPLE_LICENSE_HEADER_END@␊ |
| 22 | */␊ |
| 23 | ␊ |
| 24 | ␊ |
| 25 | /*␊ |
| 26 | * Copyright (c) 1997 Tobias Weingartner␊ |
| 27 | * All rights reserved.␊ |
| 28 | *␊ |
| 29 | * Redistribution and use in source and binary forms, with or without␊ |
| 30 | * modification, are permitted provided that the following conditions␊ |
| 31 | * are met:␊ |
| 32 | * 1. Redistributions of source code must retain the above copyright␊ |
| 33 | * notice, this list of conditions and the following disclaimer.␊ |
| 34 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
| 35 | * notice, this list of conditions and the following disclaimer in the␊ |
| 36 | * documentation and/or other materials provided with the distribution.␊ |
| 37 | * 3. All advertising materials mentioning features or use of this software␊ |
| 38 | * must display the following acknowledgement:␊ |
| 39 | * This product includes software developed by Tobias Weingartner.␊ |
| 40 | * 4. The name of the author may not be used to endorse or promote products␊ |
| 41 | * derived from this software without specific prior written permission.␊ |
| 42 | *␊ |
| 43 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR␊ |
| 44 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES␊ |
| 45 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.␊ |
| 46 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,␊ |
| 47 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT␊ |
| 48 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,␊ |
| 49 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY␊ |
| 50 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT␊ |
| 51 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF␊ |
| 52 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.␊ |
| 53 | */␊ |
| 54 | ␊ |
| 55 | #include <err.h>␊ |
| 56 | #include <util.h>␊ |
| 57 | #include <stdio.h>␊ |
| 58 | #include <string.h>␊ |
| 59 | #include <unistd.h>␊ |
| 60 | #include <sys/fcntl.h>␊ |
| 61 | #include <sys/types.h>␊ |
| 62 | #include <sys/stat.h>␊ |
| 63 | #include <machine/param.h>␊ |
| 64 | #include "disk.h"␊ |
| 65 | #include "misc.h"␊ |
| 66 | #include "mbr.h"␊ |
| 67 | ␊ |
| 68 | ␊ |
| 69 | static const struct part_type {␊ |
| 70 | ␉int␉type;␊ |
| 71 | ␉char␉sname[14];␊ |
| 72 | ␉char␉*lname;␊ |
| 73 | } part_types[] = {␊ |
| 74 | ␉{ 0x00, "unused ", "unused"},␊ |
| 75 | ␉{ 0x01, "DOS FAT-12 ", "Primary DOS with 12 bit FAT"},␊ |
| 76 | ␉{ 0x02, "XENIX / ", "XENIX / filesystem"},␊ |
| 77 | ␉{ 0x03, "XENIX /usr ", "XENIX /usr filesystem"},␊ |
| 78 | ␉{ 0x04, "DOS FAT-16 ", "Primary DOS with 16 bit FAT"},␊ |
| 79 | ␉{ 0x05, "Extended DOS", "Extended DOS"},␊ |
| 80 | ␉{ 0x06, "DOS > 32MB ", "Primary 'big' DOS (> 32MB)"},␊ |
| 81 | ␉{ 0x07, "HPFS/QNX/AUX", "OS/2 HPFS, QNX-2 or Advanced UNIX"},␊ |
| 82 | ␉{ 0x08, "AIX fs ", "AIX filesystem"},␊ |
| 83 | ␉{ 0x09, "AIX/Coherent", "AIX boot partition or Coherent"},␊ |
| 84 | ␉{ 0x0A, "OS/2 Bootmgr", "OS/2 Boot Manager or OPUS"},␊ |
| 85 | ␉{ 0x0B, "Win95 FAT-32", "Primary Win95 w/ 32-bit FAT"},␊ |
| 86 | ␉{ 0x0C, "Win95 FAT32L", "Primary Win95 w/ 32-bit FAT LBA-mapped"},␊ |
| 87 | ␉{ 0x0E, "DOS FAT-16 ", "Primary DOS w/ 16-bit FAT, CHS-mapped"},␊ |
| 88 | ␉{ 0x0F, "Extended LBA", "Extended DOS LBA-mapped"},␊ |
| 89 | ␉{ 0x10, "OPUS ", "OPUS"},␊ |
| 90 | ␉{ 0x11, "OS/2 hidden ", "OS/2 BM: hidden DOS 12-bit FAT"},␊ |
| 91 | ␉{ 0x12, "Compaq Diag.", "Compaq Diagnostics"},␊ |
| 92 | ␉{ 0x14, "OS/2 hidden ", "OS/2 BM: hidden DOS 16-bit FAT <32M or Novell DOS 7.0 bug"},␊ |
| 93 | ␉{ 0x16, "OS/2 hidden ", "OS/2 BM: hidden DOS 16-bit FAT >=32M"},␊ |
| 94 | ␉{ 0x17, "OS/2 hidden ", "OS/2 BM: hidden IFS"},␊ |
| 95 | ␉{ 0x18, "AST swap ", "AST Windows swapfile"},␊ |
| 96 | ␉{ 0x19, "Willowtech ", "Willowtech Photon coS"},␊ |
| 97 | ␉{ 0x20, "Willowsoft ", "Willowsoft OFS1"},␊ |
| 98 | ␉{ 0x24, "NEC DOS ", "NEC DOS"},␊ |
| 99 | ␉{ 0x38, "Theos ", "Theos"},␊ |
| 100 | ␉{ 0x39, "Plan 9 ",␉"Plan 9"},␊ |
| 101 | ␉{ 0x40, "VENIX 286 ", "VENIX 286 or LynxOS"},␊ |
| 102 | ␉{ 0x41, "Lin/Minux DR", "Linux/MINIX (sharing disk with DRDOS) or Personal RISC boot"},␊ |
| 103 | ␉{ 0x42, "LinuxSwap DR", "SFS or Linux swap (sharing disk with DRDOS)"},␊ |
| 104 | ␉{ 0x43, "Linux DR ", "Linux native (sharing disk with DRDOS)"},␊ |
| 105 | ␉{ 0x4D, "QNX 4.2 Pri ", "QNX 4.2 Primary"},␊ |
| 106 | ␉{ 0x4E, "QNX 4.2 Sec ", "QNX 4.2 Secondary"},␊ |
| 107 | ␉{ 0x4F, "QNX 4.2 Ter ", "QNX 4.2 Tertiary"},␊ |
| 108 | ␉{ 0x50, "DM ", "DM (disk manager)"},␊ |
| 109 | ␉{ 0x51, "DM ", "DM6 Aux1 (or Novell)"},␊ |
| 110 | ␉{ 0x52, "CP/M or SysV", "CP/M or Microport SysV/AT"},␊ |
| 111 | ␉{ 0x53, "DM ", "DM6 Aux3"},␊ |
| 112 | ␉{ 0x54, "Ontrack ", "Ontrack"},␊ |
| 113 | ␉{ 0x55, "EZ-Drive ", "EZ-Drive (disk manager)"},␊ |
| 114 | ␉{ 0x56, "Golden Bow ", "Golden Bow (disk manager)"},␊ |
| 115 | ␉{ 0x5C, "Priam ", "Priam Edisk (disk manager)"},␊ |
| 116 | ␉{ 0x61, "SpeedStor ", "SpeedStor"},␊ |
| 117 | ␉{ 0x63, "ISC, HURD, *", "ISC, System V/386, GNU HURD or Mach"},␊ |
| 118 | ␉{ 0x64, "Netware 2.xx", "Novell Netware 2.xx"},␊ |
| 119 | ␉{ 0x65, "Netware 3.xx", "Novell Netware 3.xx"},␊ |
| 120 | ␉{ 0x66, "Netware 386 ", "Novell 386 Netware"},␊ |
| 121 | ␉{ 0x67, "Novell ", "Novell"},␊ |
| 122 | ␉{ 0x68, "Novell ", "Novell"},␊ |
| 123 | ␉{ 0x69, "Novell ", "Novell"},␊ |
| 124 | ␉{ 0x70, "DiskSecure ", "DiskSecure Multi-Boot"},␊ |
| 125 | ␉{ 0x75, "PCIX ", "PCIX"},␊ |
| 126 | ␉{ 0x80, "Minix (old) ", "Minix 1.1 ... 1.4a"},␊ |
| 127 | ␉{ 0x81, "Minix (new) ", "Minix 1.4b ... 1.5.10"},␊ |
| 128 | ␉{ 0x82, "Linux swap ", "Linux swap"},␊ |
| 129 | ␉{ 0x83, "Linux files*", "Linux filesystem"},␊ |
| 130 | ␉{ 0x93, "Amoeba file*", "Amoeba filesystem"},␊ |
| 131 | ␉{ 0x94, "Amoeba BBT ", "Amoeba bad block table"},␊ |
| 132 | ␉{ 0x84, "OS/2 hidden ", "OS/2 hidden C: drive"},␊ |
| 133 | ␉{ 0x85, "Linux ext. ", "Linux extended"},␊ |
| 134 | ␉{ 0x86, "NT FAT VS ", "NT FAT volume set"},␊ |
| 135 | ␉{ 0x87, "NTFS VS ", "NTFS volume set or HPFS mirrored"},␊ |
| 136 | ␉{ 0x93, "Amoeba FS ", "Amoeba filesystem"},␊ |
| 137 | ␉{ 0x94, "Amoeba BBT ", "Amoeba bad block table"},␊ |
| 138 | ␉{ 0x99, "Mylex ", "Mylex EISA SCSI"},␊ |
| 139 | ␉{ 0x9F, "BSDI ", "BSDI BSD/OS"},␊ |
| 140 | ␉{ 0xA0, "NotebookSave", "Phoenix NoteBIOS save-to-disk"},␊ |
| 141 | ␉{ 0xA5, "FreeBSD ",␉"FreeBSD"},␊ |
| 142 | ␉{ 0xA6, "OpenBSD ", "OpenBSD"},␊ |
| 143 | ␉{ 0xA7, "NEXTSTEP ", "NEXTSTEP"},␊ |
| 144 | ␉{ 0xA8, "Darwin UFS ",␉"Darwin UFS partition"},␊ |
| 145 | ␉{ 0xA9, "NetBSD ",␉"NetBSD"},␊ |
| 146 | ␉{ 0xAB, "Darwin Boot ",␉"Darwin boot partition"},␊ |
| 147 | ␉{ 0xAF, "HFS+ ",␉"Darwin HFS+ partition"},␊ |
| 148 | ␉{ 0xB7, "BSDI filesy*", "BSDI BSD/386 filesystem"},␊ |
| 149 | ␉{ 0xB8, "BSDI swap ", "BSDI BSD/386 swap"},␊ |
| 150 | ␉{ 0xC0, "CTOS ", "CTOS"},␊ |
| 151 | ␉{ 0xC1, "DRDOSs FAT12", "DRDOS/sec (FAT-12)"},␊ |
| 152 | ␉{ 0xC4, "DRDOSs < 32M", "DRDOS/sec (FAT-16, < 32M)"},␊ |
| 153 | ␉{ 0xC6, "DRDOSs >=32M", "DRDOS/sec (FAT-16, >= 32M)"},␊ |
| 154 | ␉{ 0xC7, "HPFS Disbled", "Syrinx (Cyrnix?) or HPFS disabled"},␊ |
| 155 | ␉{ 0xDB, "CPM/C.DOS/C*", "Concurrent CPM or C.DOS or CTOS"},␊ |
| 156 | ␉{ 0xE1, "SpeedStor ", "DOS access or SpeedStor 12-bit FAT extended partition"},␊ |
| 157 | ␉{ 0xE3, "SpeedStor ", "DOS R/O or SpeedStor or Storage Dimensions"},␊ |
| 158 | ␉{ 0xE4, "SpeedStor ", "SpeedStor 16-bit FAT extended partition < 1024 cyl."},␊ |
| 159 | ␉{ 0xEB, "BeOS/i386 ", "BeOS for Intel"},␊ |
| 160 | ␉{ 0xF1, "SpeedStor ", "SpeedStor or Storage Dimensions"},␊ |
| 161 | ␉{ 0xF2, "DOS 3.3+ Sec", "DOS 3.3+ Secondary"},␊ |
| 162 | ␉{ 0xF4, "SpeedStor ", "SpeedStor >1024 cyl. or LANstep or IBM PS/2 IML"},␊ |
| 163 | ␉{ 0xFF, "Xenix BBT ", "Xenix Bad Block Table"},␊ |
| 164 | };␊ |
| 165 | ␊ |
| 166 | void␊ |
| 167 | PRT_printall()␊ |
| 168 | {␊ |
| 169 | ␉int i, idrows;␊ |
| 170 | ␊ |
| 171 | idrows = ((sizeof(part_types)/sizeof(struct part_type))+3)/4;␊ |
| 172 | ␊ |
| 173 | ␉printf("Choose from the following Partition id values:\n");␊ |
| 174 | ␉for (i = 0; i < idrows; i++) {␊ |
| 175 | ␉␉printf("%02X %s %02X %s %02X %s"␊ |
| 176 | , part_types[i ].type, part_types[i ].sname␊ |
| 177 | , part_types[i+idrows ].type, part_types[i+idrows ].sname␊ |
| 178 | , part_types[i+idrows*2].type, part_types[i+idrows*2].sname␊ |
| 179 | );␊ |
| 180 | if ((i+idrows*3) < (sizeof(part_types)/sizeof(struct part_type))) {␊ |
| 181 | ␉␉ printf(" %02X %s\n"␊ |
| 182 | , part_types[i+idrows*3].type, part_types[i+idrows*3].sname );␊ |
| 183 | }␊ |
| 184 | ␉␉else␊ |
| 185 | ␉␉ printf( "\n" );␊ |
| 186 | ␉}␊ |
| 187 | }␊ |
| 188 | ␊ |
| 189 | const char *␊ |
| 190 | PRT_ascii_id(id)␊ |
| 191 | ␉int id;␊ |
| 192 | {␊ |
| 193 | ␉static char unknown[] = "<Unknown ID>";␊ |
| 194 | ␉int i;␊ |
| 195 | ␊ |
| 196 | ␉for (i = 0; i < sizeof(part_types)/sizeof(struct part_type); i++) {␊ |
| 197 | ␉␉if (part_types[i].type == id)␊ |
| 198 | ␉␉␉return (part_types[i].sname);␊ |
| 199 | ␉}␊ |
| 200 | ␊ |
| 201 | ␉return (unknown);␊ |
| 202 | }␊ |
| 203 | ␊ |
| 204 | void␊ |
| 205 | PRT_parse(disk, prt, offset, reloff, partn, pn)␊ |
| 206 | ␉disk_t *disk;␊ |
| 207 | ␉void *prt;␊ |
| 208 | ␉off_t offset;␊ |
| 209 | ␉off_t reloff;␊ |
| 210 | ␉prt_t *partn;␊ |
| 211 | ␉int pn;␊ |
| 212 | {␊ |
| 213 | ␉unsigned char *p = prt;␊ |
| 214 | ␉off_t off;␊ |
| 215 | ␊ |
| 216 | ␉partn->flag = *p++;␊ |
| 217 | ␉partn->shead = *p++;␊ |
| 218 | ␊ |
| 219 | ␉partn->ssect = (*p) & 0x3F;␊ |
| 220 | ␉partn->scyl = ((*p << 2) & 0xFF00) | (*(p+1));␊ |
| 221 | ␉p += 2;␊ |
| 222 | ␊ |
| 223 | ␉partn->id = *p++;␊ |
| 224 | ␉partn->ehead = *p++;␊ |
| 225 | ␉partn->esect = (*p) & 0x3F;␊ |
| 226 | ␉partn->ecyl = ((*p << 2) & 0xFF00) | (*(p+1));␊ |
| 227 | ␉p += 2;␊ |
| 228 | ␊ |
| 229 | ␉if ((partn->id == DOSPTYP_EXTEND) || (partn->id == DOSPTYP_EXTENDL))␊ |
| 230 | ␉␉off = reloff;␊ |
| 231 | ␉else␊ |
| 232 | ␉␉off = offset;␊ |
| 233 | ␊ |
| 234 | ␉partn->bs = getlong(p) + off;␊ |
| 235 | ␉partn->ns = getlong(p+4);␊ |
| 236 | ␊ |
| 237 | ␊ |
| 238 | ␉/* Zero out entry if not used */␊ |
| 239 | if (partn->id == DOSPTYP_UNUSED ) {␊ |
| 240 | ␉ memset(partn, 0, sizeof(*partn));␊ |
| 241 | }␊ |
| 242 | }␊ |
| 243 | ␊ |
| 244 | int␊ |
| 245 | PRT_check_chs(partn)␊ |
| 246 | ␉prt_t *partn;␊ |
| 247 | {␊ |
| 248 | ␉if ( (partn->shead > 255) || ␊ |
| 249 | ␉␉(partn->ssect >63) || ␊ |
| 250 | ␉␉(partn->scyl > 1023) || ␊ |
| 251 | ␉␉(partn->ehead >255) || ␊ |
| 252 | ␉␉(partn->esect >63) || ␊ |
| 253 | ␉␉(partn->ecyl > 1023) )␊ |
| 254 | ␉{␊ |
| 255 | ␉␉return 0;␊ |
| 256 | ␉}␊ |
| 257 | ␉return 1;␊ |
| 258 | }␊ |
| 259 | void␊ |
| 260 | PRT_make(partn, offset, reloff, prt)␊ |
| 261 | ␉prt_t *partn;␊ |
| 262 | ␉off_t offset;␊ |
| 263 | ␉off_t reloff;␊ |
| 264 | ␉void *prt;␊ |
| 265 | {␊ |
| 266 | ␉unsigned char *p = prt;␊ |
| 267 | ␉prt_t tmp;␊ |
| 268 | ␉off_t off;␊ |
| 269 | ␊ |
| 270 | ␉tmp.shead = partn->shead;␊ |
| 271 | ␉tmp.ssect = partn->ssect;␊ |
| 272 | ␉tmp.scyl = (partn->scyl > 1023)? 1023: partn->scyl; ␊ |
| 273 | ␉tmp.ehead = partn->ehead;␊ |
| 274 | ␉tmp.esect = partn->esect;␊ |
| 275 | ␉tmp.ecyl = (partn->ecyl > 1023)? 1023: partn->ecyl; ␊ |
| 276 | ␉if (!PRT_check_chs(partn) && PRT_check_chs(&tmp)) {␊ |
| 277 | ␉␉partn->shead = tmp.shead;␊ |
| 278 | ␉␉partn->ssect = tmp.ssect;␊ |
| 279 | ␉␉partn->scyl = tmp.scyl;␊ |
| 280 | ␉␉partn->ehead = tmp.ehead;␊ |
| 281 | ␉␉partn->esect = tmp.esect;␊ |
| 282 | ␉␉partn->ecyl = tmp.ecyl;␊ |
| 283 | ␉␉printf("Cylinder values are modified to fit in CHS.\n");␊ |
| 284 | ␉}␊ |
| 285 | ␉if ((partn->id == DOSPTYP_EXTEND) || (partn->id == DOSPTYP_EXTENDL))␊ |
| 286 | ␉␉off = reloff;␊ |
| 287 | ␉else␊ |
| 288 | ␉␉off = offset;␊ |
| 289 | ␊ |
| 290 | ␉if (PRT_check_chs(partn)) {␊ |
| 291 | ␉␉*p++ = partn->flag & 0xFF;␊ |
| 292 | ␊ |
| 293 | ␉␉*p++ = partn->shead & 0xFF;␊ |
| 294 | ␉␉*p++ = (partn->ssect & 0x3F) | ((partn->scyl & 0x300) >> 2);␊ |
| 295 | ␉␉*p++ = partn->scyl & 0xFF;␊ |
| 296 | ␊ |
| 297 | ␉␉*p++ = partn->id & 0xFF;␊ |
| 298 | ␊ |
| 299 | ␉␉*p++ = partn->ehead & 0xFF;␊ |
| 300 | ␉␉*p++ = (partn->esect & 0x3F) | ((partn->ecyl & 0x300) >> 2);␊ |
| 301 | ␉␉*p++ = partn->ecyl & 0xFF;␊ |
| 302 | ␉} else {␊ |
| 303 | ␉␉/* should this really keep flag, id and set others to 0xff? */␊ |
| 304 | ␉␉*p++ = partn->flag & 0xFF;␊ |
| 305 | ␉␉*p++ = 0xFF;␊ |
| 306 | ␉␉*p++ = 0xFF;␊ |
| 307 | ␉␉*p++ = 0xFF;␊ |
| 308 | ␉␉*p++ = partn->id & 0xFF;␊ |
| 309 | ␉␉*p++ = 0xFF;␊ |
| 310 | ␉␉*p++ = 0xFF;␊ |
| 311 | ␉␉*p++ = 0xFF;␊ |
| 312 | ␉␉printf("Warning CHS values out of bounds only saving LBA values\n");␊ |
| 313 | ␉}␊ |
| 314 | ␊ |
| 315 | ␉putlong(p, partn->bs - off);␊ |
| 316 | ␉putlong(p+4, partn->ns);␊ |
| 317 | }␊ |
| 318 | ␊ |
| 319 | void␊ |
| 320 | PRT_print(num, partn)␊ |
| 321 | ␉int num;␊ |
| 322 | ␉prt_t *partn;␊ |
| 323 | {␊ |
| 324 | ␊ |
| 325 | ␉if (partn == NULL) {␊ |
| 326 | ␉␉printf(" Starting Ending\n");␊ |
| 327 | ␉␉printf(" #: id cyl hd sec - cyl hd sec [ start - size]\n");␊ |
| 328 | ␉␉printf("------------------------------------------------------------------------\n");␊ |
| 329 | ␉} else {␊ |
| 330 | ␉␉printf("%c%1d: %.2X %4d %3d %3d - %4d %3d %3d [%10d - %10d] %s\n",␊ |
| 331 | ␉␉␉(partn->flag == 0x80)?'*':' ',␊ |
| 332 | ␉␉␉num + 1, partn->id,␊ |
| 333 | ␉␉␉partn->scyl, partn->shead, partn->ssect,␊ |
| 334 | ␉␉␉partn->ecyl, partn->ehead, partn->esect,␊ |
| 335 | ␉␉␉partn->bs, partn->ns,␊ |
| 336 | ␉␉␉PRT_ascii_id(partn->id));␊ |
| 337 | ␉}␊ |
| 338 | }␊ |
| 339 | ␊ |
| 340 | void␊ |
| 341 | PRT_fix_BN(disk, part, pn)␊ |
| 342 | ␉disk_t *disk;␊ |
| 343 | ␉prt_t *part;␊ |
| 344 | ␉int pn;␊ |
| 345 | {␊ |
| 346 | ␉int spt, tpc, spc;␊ |
| 347 | ␉int start = 0;␊ |
| 348 | ␉int end = 0;␊ |
| 349 | ␊ |
| 350 | ␉/* Zero out entry if not used */␊ |
| 351 | ␉if (part->id == DOSPTYP_UNUSED ) {␊ |
| 352 | ␉␉memset(part, 0, sizeof(*part));␊ |
| 353 | ␉␉return;␊ |
| 354 | ␉}␊ |
| 355 | ␊ |
| 356 | ␉/* Disk metrics */␊ |
| 357 | ␉spt = disk->real->sectors;␊ |
| 358 | ␉tpc = disk->real->heads;␊ |
| 359 | ␉spc = spt * tpc;␊ |
| 360 | ␊ |
| 361 | ␉start += part->scyl * spc;␊ |
| 362 | ␉start += part->shead * spt;␊ |
| 363 | ␉start += part->ssect - 1;␊ |
| 364 | ␊ |
| 365 | ␉end += part->ecyl * spc;␊ |
| 366 | ␉end += part->ehead * spt;␊ |
| 367 | ␉end += part->esect - 1;␊ |
| 368 | ␊ |
| 369 | ␉/* XXX - Should handle this... */␊ |
| 370 | ␉if (start > end)␊ |
| 371 | ␉␉warn("Start of partition #%d after end!", pn);␊ |
| 372 | ␊ |
| 373 | ␉part->bs = start;␊ |
| 374 | ␉part->ns = (end - start) + 1;␊ |
| 375 | }␊ |
| 376 | ␊ |
| 377 | void␊ |
| 378 | PRT_fix_CHS(disk, part, pn)␊ |
| 379 | ␉disk_t *disk;␊ |
| 380 | ␉prt_t *part;␊ |
| 381 | ␉int pn;␊ |
| 382 | {␊ |
| 383 | int spt, tpc, spc;␊ |
| 384 | int start;␊ |
| 385 | ␉int cyl, head, sect;␊ |
| 386 | ␊ |
| 387 | ␉/* Zero out entry if not used */␊ |
| 388 | ␉if (part->id == DOSPTYP_UNUSED ) {␊ |
| 389 | ␉␉memset(part, 0, sizeof(*part));␊ |
| 390 | ␉␉return;␊ |
| 391 | ␉}␊ |
| 392 | ␊ |
| 393 | ␉/* Disk metrics */␊ |
| 394 | ␉spt = disk->real->sectors;␊ |
| 395 | ␉tpc = disk->real->heads;␊ |
| 396 | ␉spc = spt * tpc;␊ |
| 397 | ␊ |
| 398 | ␉start = part->bs;␊ |
| 399 | ␊ |
| 400 | ␉if(start <= spt) {␊ |
| 401 | ␉ /* Figure out "real" starting CHS values */␊ |
| 402 | ␉ cyl = (start / spc); start -= (cyl * spc);␊ |
| 403 | ␉ head = (start / spt); start -= (head * spt);␊ |
| 404 | ␉ sect = (start + 1);␊ |
| 405 | ␉} else {␊ |
| 406 | ␉ cyl = 1023;␊ |
| 407 | ␉ head = 254;␊ |
| 408 | ␉ sect = 63;␊ |
| 409 | ␉}␊ |
| 410 | ␊ |
| 411 | ␉part->scyl = cyl;␊ |
| 412 | ␉part->shead = head;␊ |
| 413 | ␉part->ssect = sect;␊ |
| 414 | ␊ |
| 415 | ␉/* use fake geometry to trigger LBA mode */␊ |
| 416 | ␊ |
| 417 | ␉cyl = 1023;␊ |
| 418 | ␉head = 254;␊ |
| 419 | ␉sect = 63;␊ |
| 420 | ␊ |
| 421 | ␉part->ecyl = cyl;␊ |
| 422 | ␉part->ehead = head;␊ |
| 423 | ␉part->esect = sect;␊ |
| 424 | }␊ |
| 425 | ␊ |
| 426 | |
