![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to disk.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GnuMach] / Gnu-Mach / i386 / i386at|
Return to disk.h CVS log | Up to [GnuMach] / Gnu-Mach / i386 / i386at |
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: Copyright 1988, 1989 by Intel Corporation, Santa Clara, California.
28:
29: All Rights Reserved
30:
31: Permission to use, copy, modify, and distribute this software and
32: its documentation for any purpose and without fee is hereby
33: granted, provided that the above copyright notice appears in all
34: copies and that both the copyright notice and this permission notice
35: appear in supporting documentation, and that the name of Intel
36: not be used in advertising or publicity pertaining to distribution
37: of the software without specific, written prior permission.
38:
39: INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
40: INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
41: IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
42: CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
43: LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
44: NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
45: WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
46: */
47:
48: /*
49: * disk.h
50: */
51:
1.1.1.2 ! root 52: #ifndef _DISK_H_
! 53: #define _DISK_H_
! 54:
1.1 root 55: /* Grab the public part. */
56: #include <mach/machine/disk.h>
57:
58:
59:
60: #define MAX_ALTENTS 253 /* Maximum # of slots for alts */
61: /* allowed for in the table. */
62:
63: #define ALT_SANITY 0xdeadbeef /* magic # to validate alt table */
64:
65: struct alt_table {
66: u_short alt_used; /* # of alternates already assigned */
67: u_short alt_reserved; /* # of alternates reserved on disk */
68: long alt_base; /* 1st sector (abs) of the alt area */
69: long alt_bad[MAX_ALTENTS]; /* list of bad sectors/tracks */
70: };
71:
72: struct alt_info { /* table length should be multiple of 512 */
73: long alt_sanity; /* to validate correctness */
74: u_short alt_version; /* to corroborate vintage */
75: u_short alt_pad; /* padding for alignment */
76: struct alt_table alt_trk; /* bad track table */
77: struct alt_table alt_sec; /* bad sector table */
78: };
79: typedef struct alt_info altinfo_t;
80:
81: #define V_NUMPAR 16 /* maximum number of partitions */
82:
83: #define VTOC_SANE 0x600DDEEE /* Indicates a sane VTOC */
84: #define PDLOCATION 29 /* location of VTOC */
85:
86: #define BAD_BLK 0x80 /* needed for V_VERIFY */
87: /* BAD_BLK moved from old hdreg.h */
88:
89:
90: #define HDPDLOC 29 /* location of pdinfo/vtoc */
91: #define LBLLOC 1 /* label block for xxxbsd */
92:
93: /* Partition permission flags */
94: #define V_OPEN 0x100 /* Partition open (for driver use) */
95: #define V_VALID 0x200 /* Partition is valid to use */
96:
97:
98:
99: /* Sanity word for the physical description area */
100: #define VALID_PD 0xCA5E600D
101:
102: struct localpartition {
103: u_int p_flag; /*permision flags*/
104: long p_start; /*physical start sector no of partition*/
105: long p_size; /*# of physical sectors in partition*/
106: };
107: typedef struct localpartition localpartition_t;
108:
109: struct evtoc {
110: u_int fill0[6];
111: u_int cyls; /*number of cylinders per drive*/
112: u_int tracks; /*number tracks per cylinder*/
113: u_int sectors; /*number sectors per track*/
114: u_int fill1[13];
115: u_int version; /*layout version*/
116: u_int alt_ptr; /*byte offset of alternates table*/
117: u_short alt_len; /*byte length of alternates table*/
118: u_int sanity; /*to verify vtoc sanity*/
119: u_int xcyls; /*number of cylinders per drive*/
120: u_int xtracks; /*number tracks per cylinder*/
121: u_int xsectors; /*number sectors per track*/
122: u_short nparts; /*number of partitions*/
123: u_short fill2; /*pad for 286 compiler*/
124: char label[40];
125: struct localpartition part[V_NUMPAR];/*partition headers*/
126: char fill[512-352];
127: };
128:
129: union io_arg {
130: struct {
131: u_short ncyl; /* number of cylinders on drive */
132: u_char nhead; /* number of heads/cyl */
133: u_char nsec; /* number of sectors/track */
134: u_short secsiz; /* number of bytes/sector */
135: } ia_cd; /* used for Configure Drive cmd */
136: struct {
137: u_short flags; /* flags (see below) */
138: long bad_sector; /* absolute sector number */
139: long new_sector; /* RETURNED alternate sect assigned */
140: } ia_abs; /* used for Add Bad Sector cmd */
141: struct {
142: u_short start_trk; /* first track # */
143: u_short num_trks; /* number of tracks to format */
144: u_short intlv; /* interleave factor */
145: } ia_fmt; /* used for Format Tracks cmd */
146: struct {
147: u_short start_trk; /* first track */
148: char *intlv_tbl; /* interleave table */
149: } ia_xfmt; /* used for the V_XFORMAT ioctl */
150: };
151:
152:
153: #define BOOTSZ 446 /* size of boot code in master boot block */
154: #define FD_NUMPART 4 /* number of 'partitions' in fdisk table */
155: #define ACTIVE 128 /* indicator of active partition */
156: #define BOOT_MAGIC 0xAA55 /* signature of the boot record */
157: #define UNIXOS 99 /* UNIX partition */
158: #define BSDOS 165
159: #define LINUXSWAP 130
160: #define LINUXOS 131
161: extern int OS; /* what partition we came from */
162:
163: /*
164: * structure to hold the fdisk partition table
165: */
166: struct ipart {
167: u_char bootid; /* bootable or not */
168: u_char beghead; /* beginning head, sector, cylinder */
169: u_char begsect; /* begcyl is a 10-bit number. High 2 bits */
170: u_char begcyl; /* are in begsect. */
171: u_char systid; /* OS type */
172: u_char endhead; /* ending head, sector, cylinder */
173: u_char endsect; /* endcyl is a 10-bit number. High 2 bits */
174: u_char endcyl; /* are in endsect. */
175: long relsect; /* first sector relative to start of disk */
176: long numsect; /* number of sectors in partition */
177: };
178:
179: /*
180: * structure to hold master boot block in physical sector 0 of the disk.
181: * Note that partitions stuff can't be directly included in the structure
182: * because of lameo '386 compiler alignment design.
183: */
184: struct mboot { /* master boot block */
185: char bootinst[BOOTSZ];
186: char parts[FD_NUMPART * sizeof(struct ipart)];
187: u_short signature;
188: };
189:
1.1.1.2 ! root 190: #endif /* _DISK_H_ */
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.