1 /*
2 * No copyright is claimed. This code is in the public domain; do with
3 * it what you wish.
4 */
5 #ifndef UTIL_LINUX_PT_BSD_H
6 #define UTIL_LINUX_PT_BSD_H
7
8 #define BSD_MAXPARTITIONS 16
9 #define BSD_FS_UNUSED 0
10
11 #ifndef BSD_DISKMAGIC
12 # define BSD_DISKMAGIC ((uint32_t) 0x82564557)
13 #endif
14
15 #define BSD_LINUX_BOOTDIR "/usr/ucb/mdec"
16
17 #if defined (__alpha__) || defined (__powerpc__) || \
18 defined (__ia64__) || defined (__hppa__)
19 # define BSD_LABELSECTOR 0
20 # define BSD_LABELOFFSET 64
21 #else
22 # define BSD_LABELSECTOR 1
23 # define BSD_LABELOFFSET 0
24 #endif
25
26 #define BSD_BBSIZE 8192 /* size of boot area, with label */
27 #define BSD_SBSIZE 8192 /* max size of fs superblock */
28
29 struct bsd_disklabel {
30 uint32_t d_magic; /* the magic number */
31 int16_t d_type; /* drive type */
32 int16_t d_subtype; /* controller/d_type specific */
33 char d_typename[16]; /* type name, e.g. "eagle" */
34 char d_packname[16]; /* pack identifier */
35
36 /* disk geometry: */
37 uint32_t d_secsize; /* # of bytes per sector */
38 uint32_t d_nsectors; /* # of data sectors per track */
39 uint32_t d_ntracks; /* # of tracks per cylinder */
40 uint32_t d_ncylinders; /* # of data cylinders per unit */
41 uint32_t d_secpercyl; /* # of data sectors per cylinder */
42 uint32_t d_secperunit; /* # of data sectors per unit */
43
44 /*
45 * Spares (bad sector replacements) below
46 * are not counted in d_nsectors or d_secpercyl.
47 * Spare sectors are assumed to be physical sectors
48 * which occupy space at the end of each track and/or cylinder.
49 */
50 uint16_t d_sparespertrack; /* # of spare sectors per track */
51 uint16_t d_sparespercyl; /* # of spare sectors per cylinder */
52
53 /*
54 * Alternate cylinders include maintenance, replacement,
55 * configuration description areas, etc.
56 */
57 uint32_t d_acylinders; /* # of alt. cylinders per unit */
58
59 /* hardware characteristics: */
60 /*
61 * d_interleave, d_trackskew and d_cylskew describe perturbations
62 * in the media format used to compensate for a slow controller.
63 * Interleave is physical sector interleave, set up by the formatter
64 * or controller when formatting. When interleaving is in use,
65 * logically adjacent sectors are not physically contiguous,
66 * but instead are separated by some number of sectors.
67 * It is specified as the ratio of physical sectors traversed
68 * per logical sector. Thus an interleave of 1:1 implies contiguous
69 * layout, while 2:1 implies that logical sector 0 is separated
70 * by one sector from logical sector 1.
71 * d_trackskew is the offset of sector 0 on track N
72 * relative to sector 0 on track N-1 on the same cylinder.
73 * Finally, d_cylskew is the offset of sector 0 on cylinder N
74 * relative to sector 0 on cylinder N-1.
75 */
76 uint16_t d_rpm; /* rotational speed */
77 uint16_t d_interleave; /* hardware sector interleave */
78 uint16_t d_trackskew; /* sector 0 skew, per track */
79 uint16_t d_cylskew; /* sector 0 skew, per cylinder */
80 uint32_t d_headswitch; /* head switch time, usec */
81 uint32_t d_trkseek; /* track-to-track seek, usec */
82 uint32_t d_flags; /* generic flags */
83 uint32_t d_drivedata[5]; /* drive-type specific information */
84 uint32_t d_spare[5]; /* reserved for future use */
85 uint32_t d_magic2; /* the magic number (again) */
86 uint16_t d_checksum; /* xor of data incl. partitions */
87
88 /* filesystem and partition information: */
89 uint16_t d_npartitions; /* number of partitions in following */
90 uint32_t d_bbsize; /* size of boot area at sn0, bytes */
91 uint32_t d_sbsize; /* max size of fs superblock, bytes */
92
93 struct bsd_partition { /* the partition table */
94 uint32_t p_size; /* number of sectors in partition */
95 uint32_t p_offset; /* starting sector */
96 uint32_t p_fsize; /* filesystem basic fragment size */
97 uint8_t p_fstype; /* filesystem type, see below */
98 uint8_t p_frag; /* filesystem fragments per block */
99 uint16_t p_cpg; /* filesystem cylinders per group */
100 } __attribute__((packed)) d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */
101 } __attribute__((packed));
102
103
104 /* d_type values: */
105 #define BSD_DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
106 #define BSD_DTYPE_MSCP 2 /* MSCP */
107 #define BSD_DTYPE_DEC 3 /* other DEC (rk, rl) */
108 #define BSD_DTYPE_SCSI 4 /* SCSI */
109 #define BSD_DTYPE_ESDI 5 /* ESDI interface */
110 #define BSD_DTYPE_ST506 6 /* ST506 etc. */
111 #define BSD_DTYPE_HPIB 7 /* CS/80 on HP-IB */
112 #define BSD_DTYPE_HPFL 8 /* HP Fiber-link */
113 #define BSD_DTYPE_FLOPPY 10 /* floppy */
114
115 /* d_subtype values: */
116 #define BSD_DSTYPE_INDOSPART 0x8 /* is inside dos partition */
117 #define BSD_DSTYPE_DOSPART(s) ((s) & 3) /* dos partition number */
118 #define BSD_DSTYPE_GEOMETRY 0x10 /* drive params in label */
119
120 /*
121 * Filesystem type and version.
122 * Used to interpret other filesystem-specific
123 * per-partition information.
124 */
125 #define BSD_FS_UNUSED 0 /* unused */
126 #define BSD_FS_SWAP 1 /* swap */
127 #define BSD_FS_V6 2 /* Sixth Edition */
128 #define BSD_FS_V7 3 /* Seventh Edition */
129 #define BSD_FS_SYSV 4 /* System V */
130 #define BSD_FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
131 #define BSD_FS_V8 6 /* Eighth Edition, 4K blocks */
132 #define BSD_FS_BSDFFS 7 /* 4.2BSD fast file system */
133 #define BSD_FS_BSDLFS 9 /* 4.4BSD log-structured file system */
134 #define BSD_FS_OTHER 10 /* in use, but unknown/unsupported */
135 #define BSD_FS_HPFS 11 /* OS/2 high-performance file system */
136 #define BSD_FS_ISO9660 12 /* ISO-9660 filesystem (cdrom) */
137 #define BSD_FS_ISOFS BSD_FS_ISO9660
138 #define BSD_FS_BOOT 13 /* partition contains bootstrap */
139 #define BSD_FS_ADOS 14 /* AmigaDOS fast file system */
140 #define BSD_FS_HFS 15 /* Macintosh HFS */
141 #define BSD_FS_ADVFS 16 /* Digital Unix AdvFS */
142
143 /* this is annoying, but it's also the way it is :-( */
144 #ifdef __alpha__
145 #define BSD_FS_EXT2 8 /* ext2 file system */
146 #else
147 #define BSD_FS_MSDOS 8 /* MS-DOS file system */
148 #endif
149
150 /*
151 * flags shared by various drives:
152 */
153 #define BSD_D_REMOVABLE 0x01 /* removable media */
154 #define BSD_D_ECC 0x02 /* supports ECC */
155 #define BSD_D_BADSECT 0x04 /* supports bad sector forw. */
156 #define BSD_D_RAMDISK 0x08 /* disk emulator */
157 #define BSD_D_CHAIN 0x10 /* can do back-back transfers */
158 #define BSD_D_DOSPART 0x20 /* within MSDOS partition */
159
160 #endif /* UTIL_LINUX_PT_BSD_H */