1 #ifndef FDISK_BSD_LABEL_H
2 #define FDISK_BSD_LABEL_H
5 * Copyright (c) 1987, 1988 Regents of the University of California.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 #define BSD_DISKMAGIC ((uint32_t) 0x82564557)
43 #ifndef BSD_MAXPARTITIONS
44 #define BSD_MAXPARTITIONS 16
47 #define BSD_LINUX_BOOTDIR "/usr/ucb/mdec"
49 #if defined (i386) || defined (__sparc__) || defined (__arm__) || \
50 defined (__mips__) || defined (__s390__) || defined (__sh__) || \
51 defined(__x86_64__) || defined (__avr32__) || defined(__cris__)
52 #define BSD_LABELSECTOR 1
53 #define BSD_LABELOFFSET 0
54 #elif defined (__alpha__) || defined (__powerpc__) || defined (__ia64__) || defined (__hppa__)
55 #define BSD_LABELSECTOR 0
56 #define BSD_LABELOFFSET 64
57 #elif defined (__s390__) || defined (__s390x__)
58 #define BSD_LABELSECTOR 1
59 #define BSD_LABELOFFSET 0
61 #error unknown architecture
64 #define BSD_BBSIZE 8192 /* size of boot area, with label */
65 #define BSD_SBSIZE 8192 /* max size of fs superblock */
67 struct xbsd_disklabel {
68 uint32_t d_magic; /* the magic number */
69 int16_t d_type; /* drive type */
70 int16_t d_subtype; /* controller/d_type specific */
71 char d_typename[16]; /* type name, e.g. "eagle" */
72 char d_packname[16]; /* pack identifier */
74 uint32_t d_secsize; /* # of bytes per sector */
75 uint32_t d_nsectors; /* # of data sectors per track */
76 uint32_t d_ntracks; /* # of tracks per cylinder */
77 uint32_t d_ncylinders; /* # of data cylinders per unit */
78 uint32_t d_secpercyl; /* # of data sectors per cylinder */
79 uint32_t d_secperunit; /* # of data sectors per unit */
81 * Spares (bad sector replacements) below
82 * are not counted in d_nsectors or d_secpercyl.
83 * Spare sectors are assumed to be physical sectors
84 * which occupy space at the end of each track and/or cylinder.
86 uint16_t d_sparespertrack; /* # of spare sectors per track */
87 uint16_t d_sparespercyl; /* # of spare sectors per cylinder */
89 * Alternate cylinders include maintenance, replacement,
90 * configuration description areas, etc.
92 uint32_t d_acylinders; /* # of alt. cylinders per unit */
94 /* hardware characteristics: */
96 * d_interleave, d_trackskew and d_cylskew describe perturbations
97 * in the media format used to compensate for a slow controller.
98 * Interleave is physical sector interleave, set up by the formatter
99 * or controller when formatting. When interleaving is in use,
100 * logically adjacent sectors are not physically contiguous,
101 * but instead are separated by some number of sectors.
102 * It is specified as the ratio of physical sectors traversed
103 * per logical sector. Thus an interleave of 1:1 implies contiguous
104 * layout, while 2:1 implies that logical sector 0 is separated
105 * by one sector from logical sector 1.
106 * d_trackskew is the offset of sector 0 on track N
107 * relative to sector 0 on track N-1 on the same cylinder.
108 * Finally, d_cylskew is the offset of sector 0 on cylinder N
109 * relative to sector 0 on cylinder N-1.
111 uint16_t d_rpm; /* rotational speed */
112 uint16_t d_interleave; /* hardware sector interleave */
113 uint16_t d_trackskew; /* sector 0 skew, per track */
114 uint16_t d_cylskew; /* sector 0 skew, per cylinder */
115 uint32_t d_headswitch; /* head switch time, usec */
116 uint32_t d_trkseek; /* track-to-track seek, usec */
117 uint32_t d_flags; /* generic flags */
119 uint32_t d_drivedata[NDDATA]; /* drive-type specific information */
121 uint32_t d_spare[NSPARE]; /* reserved for future use */
122 uint32_t d_magic2; /* the magic number (again) */
123 uint16_t d_checksum; /* xor of data incl. partitions */
124 /* filesystem and partition information: */
125 uint16_t d_npartitions; /* number of partitions in following */
126 uint32_t d_bbsize; /* size of boot area at sn0, bytes */
127 uint32_t d_sbsize; /* max size of fs superblock, bytes */
128 struct xbsd_partition { /* the partition table */
129 uint32_t p_size; /* number of sectors in partition */
130 uint32_t p_offset; /* starting sector */
131 uint32_t p_fsize; /* filesystem basic fragment size */
132 uint8_t p_fstype; /* filesystem type, see below */
133 uint8_t p_frag; /* filesystem fragments per block */
134 uint16_t p_cpg; /* filesystem cylinders per group */
135 } d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */
139 #define BSD_DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
140 #define BSD_DTYPE_MSCP 2 /* MSCP */
141 #define BSD_DTYPE_DEC 3 /* other DEC (rk, rl) */
142 #define BSD_DTYPE_SCSI 4 /* SCSI */
143 #define BSD_DTYPE_ESDI 5 /* ESDI interface */
144 #define BSD_DTYPE_ST506 6 /* ST506 etc. */
145 #define BSD_DTYPE_HPIB 7 /* CS/80 on HP-IB */
146 #define BSD_DTYPE_HPFL 8 /* HP Fiber-link */
147 #define BSD_DTYPE_FLOPPY 10 /* floppy */
149 /* d_subtype values: */
150 #define BSD_DSTYPE_INDOSPART 0x8 /* is inside dos partition */
151 #define BSD_DSTYPE_DOSPART(s) ((s) & 3) /* dos partition number */
152 #define BSD_DSTYPE_GEOMETRY 0x10 /* drive params in label */
155 static char *xbsd_dktypenames[] = {
169 #define BSD_DKMAXTYPES (sizeof(xbsd_dktypenames) / sizeof(xbsd_dktypenames[0]) - 1)
173 * Filesystem type and version.
174 * Used to interpret other filesystem-specific
175 * per-partition information.
177 #define BSD_FS_UNUSED 0 /* unused */
178 #define BSD_FS_SWAP 1 /* swap */
179 #define BSD_FS_V6 2 /* Sixth Edition */
180 #define BSD_FS_V7 3 /* Seventh Edition */
181 #define BSD_FS_SYSV 4 /* System V */
182 #define BSD_FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
183 #define BSD_FS_V8 6 /* Eighth Edition, 4K blocks */
184 #define BSD_FS_BSDFFS 7 /* 4.2BSD fast file system */
185 #define BSD_FS_BSDLFS 9 /* 4.4BSD log-structured file system */
186 #define BSD_FS_OTHER 10 /* in use, but unknown/unsupported */
187 #define BSD_FS_HPFS 11 /* OS/2 high-performance file system */
188 #define BSD_FS_ISO9660 12 /* ISO-9660 filesystem (cdrom) */
189 #define BSD_FS_ISOFS BSD_FS_ISO9660
190 #define BSD_FS_BOOT 13 /* partition contains bootstrap */
191 #define BSD_FS_ADOS 14 /* AmigaDOS fast file system */
192 #define BSD_FS_HFS 15 /* Macintosh HFS */
193 #define BSD_FS_ADVFS 16 /* Digital Unix AdvFS */
195 /* this is annoying, but it's also the way it is :-( */
197 #define BSD_FS_EXT2 8 /* ext2 file system */
199 #define BSD_FS_MSDOS 8 /* MS-DOS file system */
203 static struct systypes xbsd_fstypes[] = {
204 {BSD_FS_UNUSED, "unused"},
205 {BSD_FS_SWAP, "swap"},
206 {BSD_FS_V6, "Version 6"},
207 {BSD_FS_V7, "Version 7"},
208 {BSD_FS_SYSV, "System V"},
209 {BSD_FS_V71K, "4.1BSD"},
210 {BSD_FS_V8, "Eighth Edition"},
211 {BSD_FS_BSDFFS, "4.2BSD"},
213 {BSD_FS_EXT2, "ext2"},
215 {BSD_FS_MSDOS, "MS-DOS"},
217 {BSD_FS_BSDLFS, "4.4LFS"},
218 {BSD_FS_OTHER, "unknown"},
219 {BSD_FS_HPFS, "HPFS"},
220 {BSD_FS_ISO9660,"ISO-9660"},
221 {BSD_FS_BOOT, "boot"},
222 {BSD_FS_ADOS, "ADOS"},
224 {BSD_FS_ADVFS, "AdvFS"},
227 #define BSD_FSMAXTYPES (ARRAY_SIZE(xbsd_fstypes)-1)
232 * flags shared by various drives:
234 #define BSD_D_REMOVABLE 0x01 /* removable media */
235 #define BSD_D_ECC 0x02 /* supports ECC */
236 #define BSD_D_BADSECT 0x04 /* supports bad sector forw. */
237 #define BSD_D_RAMDISK 0x08 /* disk emulator */
238 #define BSD_D_CHAIN 0x10 /* can do back-back transfers */
239 #define BSD_D_DOSPART 0x20 /* within MSDOS partition */
241 #endif /* FDISK_BSD_LABEL_H */