]>
git.ipfire.org Git - thirdparty/util-linux.git/blob - include/pt-bsd.h
1 #ifndef UTIL_LINUX_PT_BSD_H
2 #define UTIL_LINUX_PT_BSD_H
4 #define BSD_MAXPARTITIONS 16
5 #define BSD_FS_UNUSED 0
8 # define BSD_DISKMAGIC ((uint32_t) 0x82564557)
11 #define BSD_LINUX_BOOTDIR "/usr/ucb/mdec"
13 #if defined (__alpha__) || defined (__powerpc__) || \
14 defined (__ia64__) || defined (__hppa__)
15 # define BSD_LABELSECTOR 0
16 # define BSD_LABELOFFSET 64
18 # define BSD_LABELSECTOR 1
19 # define BSD_LABELOFFSET 0
22 #define BSD_BBSIZE 8192 /* size of boot area, with label */
23 #define BSD_SBSIZE 8192 /* max size of fs superblock */
25 struct bsd_disklabel
{
26 uint32_t d_magic
; /* the magic number */
27 int16_t d_type
; /* drive type */
28 int16_t d_subtype
; /* controller/d_type specific */
29 char d_typename
[16]; /* type name, e.g. "eagle" */
30 char d_packname
[16]; /* pack identifier */
33 uint32_t d_secsize
; /* # of bytes per sector */
34 uint32_t d_nsectors
; /* # of data sectors per track */
35 uint32_t d_ntracks
; /* # of tracks per cylinder */
36 uint32_t d_ncylinders
; /* # of data cylinders per unit */
37 uint32_t d_secpercyl
; /* # of data sectors per cylinder */
38 uint32_t d_secperunit
; /* # of data sectors per unit */
41 * Spares (bad sector replacements) below
42 * are not counted in d_nsectors or d_secpercyl.
43 * Spare sectors are assumed to be physical sectors
44 * which occupy space at the end of each track and/or cylinder.
46 uint16_t d_sparespertrack
; /* # of spare sectors per track */
47 uint16_t d_sparespercyl
; /* # of spare sectors per cylinder */
50 * Alternate cylinders include maintenance, replacement,
51 * configuration description areas, etc.
53 uint32_t d_acylinders
; /* # of alt. cylinders per unit */
55 /* hardware characteristics: */
57 * d_interleave, d_trackskew and d_cylskew describe perturbations
58 * in the media format used to compensate for a slow controller.
59 * Interleave is physical sector interleave, set up by the formatter
60 * or controller when formatting. When interleaving is in use,
61 * logically adjacent sectors are not physically contiguous,
62 * but instead are separated by some number of sectors.
63 * It is specified as the ratio of physical sectors traversed
64 * per logical sector. Thus an interleave of 1:1 implies contiguous
65 * layout, while 2:1 implies that logical sector 0 is separated
66 * by one sector from logical sector 1.
67 * d_trackskew is the offset of sector 0 on track N
68 * relative to sector 0 on track N-1 on the same cylinder.
69 * Finally, d_cylskew is the offset of sector 0 on cylinder N
70 * relative to sector 0 on cylinder N-1.
72 uint16_t d_rpm
; /* rotational speed */
73 uint16_t d_interleave
; /* hardware sector interleave */
74 uint16_t d_trackskew
; /* sector 0 skew, per track */
75 uint16_t d_cylskew
; /* sector 0 skew, per cylinder */
76 uint32_t d_headswitch
; /* head switch time, usec */
77 uint32_t d_trkseek
; /* track-to-track seek, usec */
78 uint32_t d_flags
; /* generic flags */
79 uint32_t d_drivedata
[5]; /* drive-type specific information */
80 uint32_t d_spare
[5]; /* reserved for future use */
81 uint32_t d_magic2
; /* the magic number (again) */
82 uint16_t d_checksum
; /* xor of data incl. partitions */
84 /* filesystem and partition information: */
85 uint16_t d_npartitions
; /* number of partitions in following */
86 uint32_t d_bbsize
; /* size of boot area at sn0, bytes */
87 uint32_t d_sbsize
; /* max size of fs superblock, bytes */
89 struct bsd_partition
{ /* the partition table */
90 uint32_t p_size
; /* number of sectors in partition */
91 uint32_t p_offset
; /* starting sector */
92 uint32_t p_fsize
; /* filesystem basic fragment size */
93 uint8_t p_fstype
; /* filesystem type, see below */
94 uint8_t p_frag
; /* filesystem fragments per block */
95 uint16_t p_cpg
; /* filesystem cylinders per group */
96 } __attribute__((packed
)) d_partitions
[BSD_MAXPARTITIONS
]; /* actually may be more */
97 } __attribute__((packed
));
101 #define BSD_DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
102 #define BSD_DTYPE_MSCP 2 /* MSCP */
103 #define BSD_DTYPE_DEC 3 /* other DEC (rk, rl) */
104 #define BSD_DTYPE_SCSI 4 /* SCSI */
105 #define BSD_DTYPE_ESDI 5 /* ESDI interface */
106 #define BSD_DTYPE_ST506 6 /* ST506 etc. */
107 #define BSD_DTYPE_HPIB 7 /* CS/80 on HP-IB */
108 #define BSD_DTYPE_HPFL 8 /* HP Fiber-link */
109 #define BSD_DTYPE_FLOPPY 10 /* floppy */
111 /* d_subtype values: */
112 #define BSD_DSTYPE_INDOSPART 0x8 /* is inside dos partition */
113 #define BSD_DSTYPE_DOSPART(s) ((s) & 3) /* dos partition number */
114 #define BSD_DSTYPE_GEOMETRY 0x10 /* drive params in label */
117 * Filesystem type and version.
118 * Used to interpret other filesystem-specific
119 * per-partition information.
121 #define BSD_FS_UNUSED 0 /* unused */
122 #define BSD_FS_SWAP 1 /* swap */
123 #define BSD_FS_V6 2 /* Sixth Edition */
124 #define BSD_FS_V7 3 /* Seventh Edition */
125 #define BSD_FS_SYSV 4 /* System V */
126 #define BSD_FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
127 #define BSD_FS_V8 6 /* Eighth Edition, 4K blocks */
128 #define BSD_FS_BSDFFS 7 /* 4.2BSD fast file system */
129 #define BSD_FS_BSDLFS 9 /* 4.4BSD log-structured file system */
130 #define BSD_FS_OTHER 10 /* in use, but unknown/unsupported */
131 #define BSD_FS_HPFS 11 /* OS/2 high-performance file system */
132 #define BSD_FS_ISO9660 12 /* ISO-9660 filesystem (cdrom) */
133 #define BSD_FS_ISOFS BSD_FS_ISO9660
134 #define BSD_FS_BOOT 13 /* partition contains bootstrap */
135 #define BSD_FS_ADOS 14 /* AmigaDOS fast file system */
136 #define BSD_FS_HFS 15 /* Macintosh HFS */
137 #define BSD_FS_ADVFS 16 /* Digital Unix AdvFS */
139 /* this is annoying, but it's also the way it is :-( */
141 #define BSD_FS_EXT2 8 /* ext2 file system */
143 #define BSD_FS_MSDOS 8 /* MS-DOS file system */
147 * flags shared by various drives:
149 #define BSD_D_REMOVABLE 0x01 /* removable media */
150 #define BSD_D_ECC 0x02 /* supports ECC */
151 #define BSD_D_BADSECT 0x04 /* supports bad sector forw. */
152 #define BSD_D_RAMDISK 0x08 /* disk emulator */
153 #define BSD_D_CHAIN 0x10 /* can do back-back transfers */
154 #define BSD_D_DOSPART 0x20 /* within MSDOS partition */
156 #endif /* UTIL_LINUX_PT_BSD_H */