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726f69e2 KZ |
1 | /* |
2 | * Copyright (c) 1987, 1988 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
2b6fc908 KZ |
34 | #include <linux/types.h> /* for __u32 etc */ |
35 | ||
fd6b7a7f KZ |
36 | #ifndef BSD_DISKMAGIC /* perhaps from <linux/genhd.h> */ |
37 | #define BSD_DISKMAGIC ((__u32) 0x82564557) | |
38 | #endif | |
39 | ||
40 | #ifndef BSD_MAXPARTITIONS | |
726f69e2 | 41 | #define BSD_MAXPARTITIONS 8 |
fd6b7a7f KZ |
42 | #endif |
43 | ||
726f69e2 KZ |
44 | #define BSD_LINUX_BOOTDIR "/usr/ucb/mdec" |
45 | ||
2b6fc908 | 46 | #if defined (i386) || defined (sparc) |
726f69e2 KZ |
47 | #define BSD_LABELSECTOR 1 |
48 | #define BSD_LABELOFFSET 0 | |
5c36a0eb | 49 | #elif defined (__alpha__) || defined (__powerpc__) |
726f69e2 | 50 | #define BSD_LABELSECTOR 0 |
fd6b7a7f | 51 | #define BSD_LABELOFFSET 64 |
726f69e2 KZ |
52 | #else |
53 | #error unknown architecture | |
54 | #endif | |
55 | ||
2b6fc908 KZ |
56 | #define BSD_BBSIZE 8192 /* size of boot area, with label */ |
57 | #define BSD_SBSIZE 8192 /* max size of fs superblock */ | |
58 | ||
fd6b7a7f KZ |
59 | struct xbsd_disklabel { |
60 | __u32 d_magic; /* the magic number */ | |
61 | __s16 d_type; /* drive type */ | |
62 | __s16 d_subtype; /* controller/d_type specific */ | |
726f69e2 | 63 | char d_typename[16]; /* type name, e.g. "eagle" */ |
726f69e2 | 64 | char d_packname[16]; /* pack identifier */ |
726f69e2 | 65 | /* disk geometry: */ |
fd6b7a7f KZ |
66 | __u32 d_secsize; /* # of bytes per sector */ |
67 | __u32 d_nsectors; /* # of data sectors per track */ | |
68 | __u32 d_ntracks; /* # of tracks per cylinder */ | |
69 | __u32 d_ncylinders; /* # of data cylinders per unit */ | |
70 | __u32 d_secpercyl; /* # of data sectors per cylinder */ | |
71 | __u32 d_secperunit; /* # of data sectors per unit */ | |
726f69e2 KZ |
72 | /* |
73 | * Spares (bad sector replacements) below | |
74 | * are not counted in d_nsectors or d_secpercyl. | |
75 | * Spare sectors are assumed to be physical sectors | |
76 | * which occupy space at the end of each track and/or cylinder. | |
77 | */ | |
fd6b7a7f KZ |
78 | __u16 d_sparespertrack; /* # of spare sectors per track */ |
79 | __u16 d_sparespercyl; /* # of spare sectors per cylinder */ | |
726f69e2 KZ |
80 | /* |
81 | * Alternate cylinders include maintenance, replacement, | |
82 | * configuration description areas, etc. | |
83 | */ | |
fd6b7a7f | 84 | __u32 d_acylinders; /* # of alt. cylinders per unit */ |
726f69e2 KZ |
85 | |
86 | /* hardware characteristics: */ | |
87 | /* | |
88 | * d_interleave, d_trackskew and d_cylskew describe perturbations | |
89 | * in the media format used to compensate for a slow controller. | |
90 | * Interleave is physical sector interleave, set up by the formatter | |
91 | * or controller when formatting. When interleaving is in use, | |
92 | * logically adjacent sectors are not physically contiguous, | |
93 | * but instead are separated by some number of sectors. | |
94 | * It is specified as the ratio of physical sectors traversed | |
95 | * per logical sector. Thus an interleave of 1:1 implies contiguous | |
96 | * layout, while 2:1 implies that logical sector 0 is separated | |
97 | * by one sector from logical sector 1. | |
98 | * d_trackskew is the offset of sector 0 on track N | |
99 | * relative to sector 0 on track N-1 on the same cylinder. | |
100 | * Finally, d_cylskew is the offset of sector 0 on cylinder N | |
101 | * relative to sector 0 on cylinder N-1. | |
102 | */ | |
fd6b7a7f KZ |
103 | __u16 d_rpm; /* rotational speed */ |
104 | __u16 d_interleave; /* hardware sector interleave */ | |
105 | __u16 d_trackskew; /* sector 0 skew, per track */ | |
106 | __u16 d_cylskew; /* sector 0 skew, per cylinder */ | |
107 | __u32 d_headswitch; /* head switch time, usec */ | |
108 | __u32 d_trkseek; /* track-to-track seek, usec */ | |
109 | __u32 d_flags; /* generic flags */ | |
726f69e2 | 110 | #define NDDATA 5 |
fd6b7a7f | 111 | __u32 d_drivedata[NDDATA]; /* drive-type specific information */ |
726f69e2 | 112 | #define NSPARE 5 |
fd6b7a7f KZ |
113 | __u32 d_spare[NSPARE]; /* reserved for future use */ |
114 | __u32 d_magic2; /* the magic number (again) */ | |
115 | __u16 d_checksum; /* xor of data incl. partitions */ | |
726f69e2 | 116 | /* filesystem and partition information: */ |
fd6b7a7f KZ |
117 | __u16 d_npartitions; /* number of partitions in following */ |
118 | __u32 d_bbsize; /* size of boot area at sn0, bytes */ | |
119 | __u32 d_sbsize; /* max size of fs superblock, bytes */ | |
120 | struct xbsd_partition { /* the partition table */ | |
121 | __u32 p_size; /* number of sectors in partition */ | |
122 | __u32 p_offset; /* starting sector */ | |
123 | __u32 p_fsize; /* filesystem basic fragment size */ | |
124 | __u8 p_fstype; /* filesystem type, see below */ | |
125 | __u8 p_frag; /* filesystem fragments per block */ | |
126 | __u16 p_cpg; /* filesystem cylinders per group */ | |
726f69e2 KZ |
127 | } d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */ |
128 | }; | |
129 | ||
130 | /* d_type values: */ | |
131 | #define BSD_DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */ | |
132 | #define BSD_DTYPE_MSCP 2 /* MSCP */ | |
133 | #define BSD_DTYPE_DEC 3 /* other DEC (rk, rl) */ | |
134 | #define BSD_DTYPE_SCSI 4 /* SCSI */ | |
135 | #define BSD_DTYPE_ESDI 5 /* ESDI interface */ | |
136 | #define BSD_DTYPE_ST506 6 /* ST506 etc. */ | |
137 | #define BSD_DTYPE_HPIB 7 /* CS/80 on HP-IB */ | |
138 | #define BSD_DTYPE_HPFL 8 /* HP Fiber-link */ | |
139 | #define BSD_DTYPE_FLOPPY 10 /* floppy */ | |
140 | ||
141 | /* d_subtype values: */ | |
142 | #define BSD_DSTYPE_INDOSPART 0x8 /* is inside dos partition */ | |
143 | #define BSD_DSTYPE_DOSPART(s) ((s) & 3) /* dos partition number */ | |
144 | #define BSD_DSTYPE_GEOMETRY 0x10 /* drive params in label */ | |
145 | ||
146 | #ifdef DKTYPENAMES | |
fd6b7a7f | 147 | static char *xbsd_dktypenames[] = { |
726f69e2 KZ |
148 | "unknown", |
149 | "SMD", | |
150 | "MSCP", | |
151 | "old DEC", | |
152 | "SCSI", | |
153 | "ESDI", | |
154 | "ST506", | |
155 | "HP-IB", | |
156 | "HP-FL", | |
157 | "type 9", | |
158 | "floppy", | |
159 | 0 | |
160 | }; | |
fd6b7a7f | 161 | #define BSD_DKMAXTYPES (sizeof(xbsd_dktypenames) / sizeof(xbsd_dktypenames[0]) - 1) |
726f69e2 KZ |
162 | #endif |
163 | ||
164 | /* | |
165 | * Filesystem type and version. | |
166 | * Used to interpret other filesystem-specific | |
167 | * per-partition information. | |
168 | */ | |
169 | #define BSD_FS_UNUSED 0 /* unused */ | |
170 | #define BSD_FS_SWAP 1 /* swap */ | |
171 | #define BSD_FS_V6 2 /* Sixth Edition */ | |
172 | #define BSD_FS_V7 3 /* Seventh Edition */ | |
173 | #define BSD_FS_SYSV 4 /* System V */ | |
174 | #define BSD_FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */ | |
175 | #define BSD_FS_V8 6 /* Eighth Edition, 4K blocks */ | |
176 | #define BSD_FS_BSDFFS 7 /* 4.2BSD fast file system */ | |
726f69e2 KZ |
177 | #define BSD_FS_BSDLFS 9 /* 4.4BSD log-structured file system */ |
178 | #define BSD_FS_OTHER 10 /* in use, but unknown/unsupported */ | |
179 | #define BSD_FS_HPFS 11 /* OS/2 high-performance file system */ | |
180 | #define BSD_FS_ISO9660 12 /* ISO-9660 filesystem (cdrom) */ | |
181 | #define BSD_FS_ISOFS BSD_FS_ISO9660 | |
182 | #define BSD_FS_BOOT 13 /* partition contains bootstrap */ | |
183 | #define BSD_FS_ADOS 14 /* AmigaDOS fast file system */ | |
184 | #define BSD_FS_HFS 15 /* Macintosh HFS */ | |
185 | ||
fd6b7a7f KZ |
186 | /* this is annoying, but it's also the way it is :-( */ |
187 | #ifdef __alpha__ | |
188 | #define BSD_FS_EXT2 8 /* MS-DOS file system */ | |
189 | #else | |
190 | #define BSD_FS_MSDOS 8 /* MS-DOS file system */ | |
191 | #endif | |
192 | ||
726f69e2 | 193 | #ifdef DKTYPENAMES |
fd6b7a7f | 194 | static struct systypes xbsd_fstypes[] = { |
726f69e2 KZ |
195 | {BSD_FS_UNUSED, "unused"}, |
196 | {BSD_FS_SWAP, "swap"}, | |
197 | {BSD_FS_V6, "Version 6"}, | |
198 | {BSD_FS_V7, "Version 7"}, | |
199 | {BSD_FS_SYSV, "System V"}, | |
200 | {BSD_FS_V71K, "4.1BSD"}, | |
201 | {BSD_FS_V8, "Eighth Edition"}, | |
202 | {BSD_FS_BSDFFS, "4.2BSD"}, | |
fd6b7a7f KZ |
203 | #ifdef __alpha__ |
204 | {BSD_FS_EXT2, "ext2"}, | |
205 | #else | |
726f69e2 | 206 | {BSD_FS_MSDOS, "MS-DOS"}, |
fd6b7a7f | 207 | #endif |
726f69e2 KZ |
208 | {BSD_FS_BSDLFS, "4.4LFS"}, |
209 | {BSD_FS_OTHER, "unknown"}, | |
210 | {BSD_FS_HPFS, "HPFS"}, | |
211 | {BSD_FS_ISO9660,"ISO-9660"}, | |
212 | {BSD_FS_BOOT, "boot"}, | |
213 | {BSD_FS_ADOS, "ADOS"}, | |
2b6fc908 KZ |
214 | {BSD_FS_HFS, "HFS"}, |
215 | { 0, NULL } | |
726f69e2 | 216 | }; |
2b6fc908 | 217 | #define BSD_FSMAXTYPES (SIZE(xbsd_fstypes)-1) |
726f69e2 | 218 | |
726f69e2 KZ |
219 | #endif |
220 | ||
221 | /* | |
222 | * flags shared by various drives: | |
223 | */ | |
224 | #define BSD_D_REMOVABLE 0x01 /* removable media */ | |
225 | #define BSD_D_ECC 0x02 /* supports ECC */ | |
226 | #define BSD_D_BADSECT 0x04 /* supports bad sector forw. */ | |
227 | #define BSD_D_RAMDISK 0x08 /* disk emulator */ | |
228 | #define BSD_D_CHAIN 0x10 /* can do back-back transfers */ | |
229 | #define BSD_D_DOSPART 0x20 /* within MSDOS partition */ |