![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to rz_labels.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GnuMach] / Gnu-Mach / scsi|
Return to rz_labels.h CVS log | Up to [GnuMach] / Gnu-Mach / scsi |
1.1 root 1: /*
2: * Mach Operating System
3: * Copyright (c) 1991,1990,1989 Carnegie Mellon University
4: * All Rights Reserved.
5: *
6: * Permission to use, copy, modify and distribute this software and its
7: * documentation is hereby granted, provided that both the copyright
8: * notice and this permission notice appear in all copies of the
9: * software, derivative works or modified versions, and any portions
10: * thereof, and that both notices appear in supporting documentation.
11: *
12: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
13: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
15: *
16: * Carnegie Mellon requests users of this software to return to
17: *
18: * Software Distribution Coordinator or [email protected]
19: * School of Computer Science
20: * Carnegie Mellon University
21: * Pittsburgh PA 15213-3890
22: *
23: * any improvements or extensions that they make and grant Carnegie Mellon
24: * the rights to redistribute these changes.
25: */
26: /*
27: * File: rz_labels.h
28: * Author: Alessandro Forin, Carnegie Mellon University
29: * Date: 10/90
30: *
31: * Definitions of various vendor's disk label formats.
32: */
33:
34: /* modified by Kevin T. Van Maren for the unified partition code */
35:
36: #ifndef _RZ_LABELS_H_
37: #define _RZ_LABELS_H_
38:
39: /*
40: * This function looks for, and converts to BSD format
41: * a vendor's label. It is only called if we did not
42: * find a standard BSD label on the disk pack.
43: */
44: extern boolean_t rz_vendor_label();
45:
46: /*
47: * Definition of the DEC disk label,
48: * which is located (you guessed it)
49: * at the end of the 4.3 superblock.
50: */
51:
52: struct dec_partition_info {
53: unsigned int n_sectors; /* how big the partition is */
54: unsigned int offset; /* sector no. of start of part. */
55: };
56:
57: typedef struct {
58: int magic;
59: # define DEC_LABEL_MAGIC 0x032957
60: int in_use;
61: struct dec_partition_info partitions[8];
62: } dec_label_t;
63:
64: /*
65: * Physical location on disk.
66: * This is independent of the filesystem we use,
67: * although of course we'll be in trouble if we
68: * screwup the 4.3 SBLOCK..
69: */
70:
71: #define DEC_LABEL_BYTE_OFFSET ((2*8192)-sizeof(dec_label_t))
72:
73:
74: /*
75: * Definitions for the primary boot information
76: * This is common, cuz the prom knows it.
77: */
78:
79: typedef struct {
80: int pad[2];
81: unsigned int magic;
82: # define DEC_BOOT0_MAGIC 0x2757a
83: int mode;
84: unsigned int phys_base;
85: unsigned int virt_base;
86: unsigned int n_sectors;
87: unsigned int start_sector;
88: } dec_boot0_t;
89:
90: typedef struct {
91: dec_boot0_t vax_boot;
92: /* BSD label still fits in pad */
93: char pad[0x1e0-sizeof(dec_boot0_t)];
94: unsigned long block_count;
95: unsigned long starting_lbn;
96: unsigned long flags;
97: unsigned long checksum; /* add cmpl-2 all but here */
98: } alpha_boot0_t;
99:
100: /*
101: * Definition of the Omron disk label,
102: * which is located at sector 0. It
103: * _is_ sector 0, actually.
104: */
105: struct omron_partition_info {
106: unsigned long offset;
107: unsigned long n_sectors;
108: };
109:
110: typedef struct {
111: char packname[128]; /* in ascii */
112:
113: char pad[512-(128+8*8+11*2+4)];
114:
115: unsigned short badchk; /* checksum of bad track */
116: unsigned long maxblk; /* # of total logical blocks */
117: unsigned short dtype; /* disk drive type */
118: unsigned short ndisk; /* # of disk drives */
119: unsigned short ncyl; /* # of data cylinders */
120: unsigned short acyl; /* # of alternate cylinders */
121: unsigned short nhead; /* # of heads in this partition */
122: unsigned short nsect; /* # of 512 byte sectors per track */
123: unsigned short bhead; /* identifies proper label locations */
124: unsigned short ppart; /* physical partition # */
125: struct omron_partition_info
126: partitions[8];
127:
128: unsigned short magic; /* identifies this label format */
129: # define OMRON_LABEL_MAGIC 0xdabe
130:
131: unsigned short cksum; /* xor checksum of sector */
132:
133: } omron_label_t;
134:
135: /*
136: * Physical location on disk.
137: */
138:
139: #define OMRON_LABEL_BYTE_OFFSET 0
140:
141:
142: /*
143: * Definition of the i386AT disk label, which lives inside sector 0.
144: * This is the info the BIOS knows about, which we use for bootstrapping.
145: * It is common across all disks known to BIOS.
146: */
147:
148: struct bios_partition_info {
149:
150: unsigned char bootid; /* bootable or not */
151: # define BIOS_BOOTABLE 128
152:
153: unsigned char beghead;/* beginning head, sector, cylinder */
154: unsigned char begsect;/* begcyl is a 10-bit number. High 2 bits */
155: unsigned char begcyl; /* are in begsect. */
156:
157: unsigned char systid; /* filesystem type */
158: # define UNIXOS 99 /* GNU HURD? */
159: # define BSDOS 165 /* 386BSD */
160: # define LINUXSWAP 130
161: # define LINUXOS 131
162: # define DOS_EXTENDED 05 /* container for logical partitions */
163:
164: # define HPFS 07 /* OS/2 Native */
165: # define OS_2_BOOT 10 /* OS/2 Boot Manager */
166: # define DOS_12 01 /* 12 bit FAT */
167: # define DOS_16_OLD 04 /* < 32MB */
168: # define DOS_16 06 /* >= 32MB (#4 not used anymore) */
169:
170: /* these numbers can't be trusted because */
171: /* of newer, larger drives */
172: unsigned char endhead;/* ending head, sector, cylinder */
173: unsigned char endsect;/* endcyl is a 10-bit number. High 2 bits */
174: unsigned char endcyl; /* are in endsect. */
175:
176: unsigned long offset;
177: unsigned long n_sectors;
178: };
179:
180: typedef struct {
181: /* struct bios_partition_info bogus compiler alignes wrong
182: partitions[4];
183: */
184: char partitions[4*sizeof(struct bios_partition_info)];
185: unsigned short magic;
186: # define BIOS_LABEL_MAGIC 0xaa55
187: } bios_label_t;
188:
189: /*
190: * Physical location on disk.
191: */
192:
193: #define BIOS_LABEL_BYTE_OFFSET 446
194:
195: /*
196: * Definitions for the primary boot information
197: * This _is_ block 0
198: */
199:
200: #define BIOS_BOOT0_SIZE BIOS_LABEL_BYTE_OFFSET
201:
202: typedef struct {
203: char boot0[BIOS_BOOT0_SIZE]; /* boot code */
204: /* bios_label_t label; bogus compiler alignes wrong */
205: char label[sizeof(bios_label_t)];
206: } bios_boot0_t;
207:
208: /* Moved from i386at/nhdreg.h */
209: #define PDLOCATION 29 /* VTOC sector */
210:
211:
212: /* these are the partition types that can contain sub-partitions */
213: /* enum types... */
214: #define DISKPART_NONE 0 /* smallest piece flag !?! */
215: #define DISKPART_DOS 1
216: #define DISKPART_BSD 2
217: #define DISKPART_VTOC 3
218: #define DISKPART_OMRON 4
219: #define DISKPART_DEC 5 /* VAX disks? */
220: #define DISKPART_UNKNOWN 99
221:
222:
223:
224: /* for NEW partition code */
225: /* this is the basic partition structure. an array of these is
226: filled, with element 0 being the whole drive, element 1-n being
227: the n top-level partitions, followed by 0+ groups of 1+ sub-partitions. */
228: typedef struct diskpart {
229: short type; /* DISKPART_xxx (see above) */
230: short fsys; /* file system (if known) */
231: int nsubs; /* number of sub-slices */
232: struct diskpart *subs; /* pointer to the sub-partitions */
233: int start; /* relative to the start of the DRIVE */
234: int size; /* # sectors in this piece */
235: } diskpart;
236:
237: int get_only_partition(void *driver_info, int (*bottom_read_fun)(),
238: struct diskpart *array, int array_size,
239: int disk_size, char *drive_name);
240:
241: struct diskpart *lookup_part(struct diskpart *array, int dev_number);
242: #endif _RZ_LABELS_H_
243:
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.