Refreshed the silly copy of <sys/disklabel.h>. The old copy was
seriously out of date. It older than Lite1 (it has an undeprecated DISKTAB but not _PATH_DISKTAB).
This commit is contained in:
Bruce Evans
parent
78126c2704
commit
90d1989e2a
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@ -106,17 +106,37 @@ The format of the disk label, as specified in
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.Pa <sys/disklabel.h> ,
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is
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.Bd -literal
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/*
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* Disk description table, see disktab(5)
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*/
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#define DISKTAB "/etc/disktab"
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#ifndef _SYS_DISKLABEL_H_
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#define _SYS_DISKLABEL_H_
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#ifndef _KERNEL
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#include <sys/types.h>
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#endif
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#include <sys/ioccom.h>
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/*
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* Each disk has a label which includes information about the hardware
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* disk geometry, filesystem partitions, and drive specific information.
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* The label is in block 0 or 1, possibly offset from the beginning
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* to leave room for a bootstrap, etc.
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*/
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* Disk description table, see disktab(5)
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*/
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#define _PATH_DISKTAB "/etc/disktab"
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#define DISKTAB "/etc/disktab" /* deprecated */
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/*
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* Each disk has a label which includes information about the hardware
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* disk geometry, filesystem partitions, and drive specific information.
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* The label is in block 0 or 1, possibly offset from the beginning
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* to leave room for a bootstrap, etc.
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*/
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/* XXX these should be defined per controller (or drive) elsewhere, not here! */
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#ifdef __i386__
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#define LABELSECTOR 1 /* sector containing label */
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#define LABELOFFSET 0 /* offset of label in sector */
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#endif
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#ifdef __alpha__
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#define LABELSECTOR 0
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#define LABELOFFSET 64
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#endif
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#ifndef LABELSECTOR
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#define LABELSECTOR 0 /* sector containing label */
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@ -126,124 +146,142 @@ is
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#define LABELOFFSET 64 /* offset of label in sector */
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#endif
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#define DISKMAGIC ((u_long) 0x82564557) /* The disk magic number */
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#define DISKMAGIC ((u_int32_t)0x82564557) /* The disk magic number */
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#ifndef MAXPARTITIONS
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#define MAXPARTITIONS 8
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#endif
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#define LABEL_PART 2 /* partition containing label */
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#define RAW_PART 2 /* partition containing whole disk */
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#define SWAP_PART 1 /* partition normally containing swap */
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#ifndef LOCORE
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struct disklabel {
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u_long d_magic; /* the magic number */
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short d_type; /* drive type */
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short d_subtype; /* controller/d_type specific */
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char d_typename[16]; /* type name, e.g. "eagle" */
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u_int32_t d_magic; /* the magic number */
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u_int16_t d_type; /* drive type */
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u_int16_t d_subtype; /* controller/d_type specific */
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char d_typename[16]; /* type name, e.g. "eagle" */
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/*
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* d_packname contains the pack identifier and is returned when
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* the disklabel is read off the disk or in-core copy.
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* d_boot0 and d_boot1 are the (optional) names of the
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* primary (block 0) and secondary (block 1-15) bootstraps
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* as found in /boot. These are returned when using
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* getdiskbyname(3)
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to retrieve the values from /etc/disktab.
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*/
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#if defined(KERNEL) || defined(STANDALONE)
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char d_packname[16]; /* pack identifier */
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#else
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* d_packname contains the pack identifier and is returned when
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* the disklabel is read off the disk or in-core copy.
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* d_boot0 and d_boot1 are the (optional) names of the
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* primary (block 0) and secondary (block 1-15) bootstraps
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* as found in /boot. These are returned when using
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* getdiskbyname(3) to retrieve the values from /etc/disktab.
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*/
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union {
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char un_d_packname[16]; /* pack identifier */
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char un_d_packname[16]; /* pack identifier */
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struct {
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char *un_d_boot0; /* primary bootstrap name */
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char *un_d_boot1; /* secondary bootstrap name */
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} un_b;
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} d_un;
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} un_b;
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} d_un;
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#define d_packname d_un.un_d_packname
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#define d_boot0 d_un.un_b.un_d_boot0
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#define d_boot1 d_un.un_b.un_d_boot1
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#endif /* ! KERNEL or STANDALONE */
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/* disk geometry: */
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u_long d_secsize; /* # of bytes per sector */
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u_long d_nsectors; /* # of data sectors per track */
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u_long d_ntracks; /* # of tracks per cylinder */
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u_long d_ncylinders; /* # of data cylinders per unit */
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u_long d_secpercyl; /* # of data sectors per cylinder */
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u_long d_secperunit; /* # of data sectors per unit */
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/*
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* Spares (bad sector replacements) below
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* are not counted in d_nsectors or d_secpercyl.
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* Spare sectors are assumed to be physical sectors
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* which occupy space at the end of each track and/or cylinder.
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*/
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u_short d_sparespertrack; /* # of spare sectors per track */
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u_short d_sparespercyl; /* # of spare sectors per cylinder */
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/*
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* Alternate cylinders include maintenance, replacement,
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* configuration description areas, etc.
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*/
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u_long d_acylinders; /* # of alt. cylinders per unit */
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/* disk geometry: */
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u_int32_t d_secsize; /* # of bytes per sector */
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u_int32_t d_nsectors; /* # of data sectors per track */
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u_int32_t d_ntracks; /* # of tracks per cylinder */
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u_int32_t d_ncylinders; /* # of data cylinders per unit */
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u_int32_t d_secpercyl; /* # of data sectors per cylinder */
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u_int32_t d_secperunit; /* # of data sectors per unit */
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/* hardware characteristics: */
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/*
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* d_interleave, d_trackskew and d_cylskew describe perturbations
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* in the media format used to compensate for a slow controller.
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* Interleave is physical sector interleave, set up by the formatter
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* or controller when formatting. When interleaving is in use,
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* logically adjacent sectors are not physically contiguous,
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* but instead are separated by some number of sectors.
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* It is specified as the ratio of physical sectors traversed
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* per logical sector. Thus an interleave of 1:1 implies contiguous
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* layout, while 2:1 implies that logical sector 0 is separated
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* by one sector from logical sector 1.
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* d_trackskew is the offset of sector 0 on track N
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* relative to sector 0 on track N-1 on the same cylinder.
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* Finally, d_cylskew is the offset of sector 0 on cylinder N
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* relative to sector 0 on cylinder N-1.
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*/
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u_short d_rpm; /* rotational speed */
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u_short d_interleave; /* hardware sector interleave */
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u_short d_trackskew; /* sector 0 skew, per track */
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u_short d_cylskew; /* sector 0 skew, per cylinder */
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u_long d_headswitch; /* head switch time, usec */
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u_long d_trkseek; /* track-to-track seek, usec */
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u_long d_flags; /* generic flags */
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* Spares (bad sector replacements) below are not counted in
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* d_nsectors or d_secpercyl. Spare sectors are assumed to
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* be physical sectors which occupy space at the end of each
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* track and/or cylinder.
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*/
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u_int16_t d_sparespertrack; /* # of spare sectors per track */
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u_int16_t d_sparespercyl; /* # of spare sectors per cylinder */
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/*
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* Alternate cylinders include maintenance, replacement, configuration
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* description areas, etc.
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*/
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u_int32_t d_acylinders; /* # of alt. cylinders per unit */
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/* hardware characteristics: */
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/*
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* d_interleave, d_trackskew and d_cylskew describe perturbations
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* in the media format used to compensate for a slow controller.
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* Interleave is physical sector interleave, set up by the
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* formatter or controller when formatting. When interleaving is
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* in use, logically adjacent sectors are not physically
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* contiguous, but instead are separated by some number of
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* sectors. It is specified as the ratio of physical sectors
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* traversed per logical sector. Thus an interleave of 1:1
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* implies contiguous layout, while 2:1 implies that logical
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* sector 0 is separated by one sector from logical sector 1.
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* d_trackskew is the offset of sector 0 on track N relative to
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* sector 0 on track N-1 on the same cylinder. Finally, d_cylskew
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* is the offset of sector 0 on cylinder N relative to sector 0
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* on cylinder N-1.
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*/
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u_int16_t d_rpm; /* rotational speed */
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u_int16_t d_interleave; /* hardware sector interleave */
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u_int16_t d_trackskew; /* sector 0 skew, per track */
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u_int16_t d_cylskew; /* sector 0 skew, per cylinder */
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u_int32_t d_headswitch; /* head switch time, usec */
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u_int32_t d_trkseek; /* track-to-track seek, usec */
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u_int32_t d_flags; /* generic flags */
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#define NDDATA 5
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u_long d_drivedata[NDDATA]; /* drive-type specific information */
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u_int32_t d_drivedata[NDDATA]; /* drive-type specific information */
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#define NSPARE 5
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u_long d_spare[NSPARE]; /* reserved for future use */
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u_long d_magic2; /* the magic number (again) */
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u_short d_checksum; /* xor of data incl. partitions */
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u_int32_t d_spare[NSPARE]; /* reserved for future use */
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u_int32_t d_magic2; /* the magic number (again) */
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u_int16_t d_checksum; /* xor of data incl. partitions */
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/* filesystem and partition information: */
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u_short d_npartitions; /* number of partitions in following */
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u_long d_bbsize; /* size of boot area at sn0, bytes */
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u_long d_sbsize; /* max size of fs superblock, bytes */
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struct partition { /* the partition table */
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u_long p_size; /* number of sectors in partition */
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u_long p_offset; /* starting sector */
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u_long p_fsize; /* filesystem basic fragment size */
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u_char p_fstype; /* filesystem type, see below */
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u_char p_frag; /* filesystem fragments per block */
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/* filesystem and partition information: */
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u_int16_t d_npartitions; /* number of partitions in following */
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u_int32_t d_bbsize; /* size of boot area at sn0, bytes */
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u_int32_t d_sbsize; /* max size of fs superblock, bytes */
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struct partition { /* the partition table */
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u_int32_t p_size; /* number of sectors in partition */
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u_int32_t p_offset; /* starting sector */
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u_int32_t p_fsize; /* filesystem basic fragment size */
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u_int8_t p_fstype; /* filesystem type, see below */
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u_int8_t p_frag; /* filesystem fragments per block */
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union {
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u_short cpg; /* UFS: FS cylinders per group */
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u_short sgs; /* LFS: FS segment shift */
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u_int16_t cpg; /* UFS: FS cylinders per group */
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u_int16_t sgs; /* LFS: FS segment shift */
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} __partition_u1;
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#define p_cpg __partition_u1.cpg
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#define p_sgs __partition_u1.sgs
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u_short p_cpg; /* filesystem cylinders per group */
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} d_partitions[MAXPARTITIONS]; /* actually may be more */
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};
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#else /* LOCORE */
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/*
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* offsets for asm boot files.
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*/
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.set d_secsize,40
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.set d_nsectors,44
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.set d_ntracks,48
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.set d_ncylinders,52
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.set d_secpercyl,56
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.set d_secperunit,60
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.set d_end_,276 /* size of disk label */
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#endif /* LOCORE */
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/* d_type values: */
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#define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
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#define DTYPE_MSCP 2 /* MSCP */
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#define DTYPE_DEC 3 /* other DEC (rk, rl) */
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#define DTYPE_SCSI 4 /* SCSI */
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#define DTYPE_ESDI 5 /* ESDI interface */
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#define DTYPE_ST506 6 /* ST506 etc. */
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#define DTYPE_HPIB 7 /* CS/80 on HP-IB */
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#define DTYPE_HPFL 8 /* HP Fiber-link */
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#define DTYPE_FLOPPY 10 /* floppy */
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#define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
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#define DTYPE_MSCP 2 /* MSCP */
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#define DTYPE_DEC 3 /* other DEC (rk, rl) */
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#define DTYPE_SCSI 4 /* SCSI */
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#define DTYPE_ESDI 5 /* ESDI interface */
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#define DTYPE_ST506 6 /* ST506 etc. */
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#define DTYPE_HPIB 7 /* CS/80 on HP-IB */
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#define DTYPE_HPFL 8 /* HP Fiber-link */
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#define DTYPE_FLOPPY 10 /* floppy */
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#define DTYPE_CCD 11 /* concatenated disk */
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#define DTYPE_VINUM 12 /* vinum volume */
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#define DTYPE_DOC2K 13 /* Msys DiskOnChip */
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#if defined(PC98) && !defined(PC98_ATCOMPAT)
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#define DSTYPE_SEC256 0x80 /* physical sector size=256 */
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#endif
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#ifdef DKTYPENAMES
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static char *dktypenames[] = {
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@ -258,30 +296,34 @@ static char *dktypenames[] = {
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"HP-FL",
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"type 9",
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"floppy",
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0
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"CCD",
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"Vinum",
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"DOC2K",
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NULL
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};
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#define DKMAXTYPES (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1)
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#endif
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/*
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* Filesystem type and version.
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* Used to interpret other filesystem-specific
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* per-partition information.
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*/
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#define FS_UNUSED 0 /* unused */
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#define FS_SWAP 1 /* swap */
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#define FS_V6 2 /* Sixth Edition */
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#define FS_V7 3 /* Seventh Edition */
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#define FS_SYSV 4 /* System V */
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#define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
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#define FS_V8 6 /* Eighth Edition, 4K blocks */
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#define FS_BSDFFS 7 /* 4.2BSD fast file system */
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#define FS_MSDOS 8 /* MSDOS file system */
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#define FS_BSDLFS 9 /* 4.4BSD log-structured file system */
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#define FS_OTHER 10 /* in use, but unknown/unsupported */
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#define FS_HPFS 11 /* OS/2 high-performance file system */
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#define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */
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#define FS_BOOT 13 /* partition contains bootstrap */
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* Filesystem type and version.
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* Used to interpret other filesystem-specific
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* per-partition information.
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*/
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#define FS_UNUSED 0 /* unused */
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#define FS_SWAP 1 /* swap */
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#define FS_V6 2 /* Sixth Edition */
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#define FS_V7 3 /* Seventh Edition */
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#define FS_SYSV 4 /* System V */
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#define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
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#define FS_V8 6 /* Eighth Edition, 4K blocks */
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#define FS_BSDFFS 7 /* 4.2BSD fast file system */
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#define FS_MSDOS 8 /* MSDOS file system */
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#define FS_BSDLFS 9 /* 4.4BSD log-structured file system */
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#define FS_OTHER 10 /* in use, but unknown/unsupported */
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#define FS_HPFS 11 /* OS/2 high-performance file system */
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#define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */
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#define FS_BOOT 13 /* partition contains bootstrap */
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#define FS_VINUM 14 /* Vinum drive */
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#ifdef DKTYPENAMES
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static char *fstypenames[] = {
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@ -299,35 +341,35 @@ static char *fstypenames[] = {
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"HPFS",
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"ISO9660",
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"boot",
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0
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"vinum",
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NULL
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};
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#define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1)
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#endif
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/*
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* flags shared by various drives:
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*/
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#define D_REMOVABLE 0x01 /* removable media */
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#define D_ECC 0x02 /* supports ECC */
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#define D_BADSECT 0x04 /* supports bad sector forw. */
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#define D_RAMDISK 0x08 /* disk emulator */
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#define D_CHAIN 0x10 /* can do back-back transfers */
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* flags shared by various drives:
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*/
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#define D_REMOVABLE 0x01 /* removable media */
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#define D_ECC 0x02 /* supports ECC */
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#define D_BADSECT 0x04 /* supports bad sector forw. */
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#define D_RAMDISK 0x08 /* disk emulator */
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#define D_CHAIN 0x10 /* can do back-back transfers */
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/*
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* Drive data for SMD.
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*/
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* Drive data for SMD.
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*/
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#define d_smdflags d_drivedata[0]
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#define D_SSE 0x1 /* supports skip sectoring */
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#define D_SSE 0x1 /* supports skip sectoring */
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#define d_mindist d_drivedata[1]
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#define d_maxdist d_drivedata[2]
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#define d_sdist d_drivedata[3]
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/*
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* Drive data for ST506.
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*/
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* Drive data for ST506.
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*/
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#define d_precompcyl d_drivedata[0]
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#define d_gap3 d_drivedata[1] /* used only when formatting */
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#define d_gap3 d_drivedata[1] /* used only when formatting */
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/*
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* Drive data for SCSI.
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@ -336,48 +378,165 @@ static char *fstypenames[] = {
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#ifndef LOCORE
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/*
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* Structure used to perform a format
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* or other raw operation, returning data
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* and/or register values.
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* Register identification and format
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* are device- and driver-dependent.
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*/
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* Structure used to perform a format or other raw operation, returning
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* data and/or register values. Register identification and format
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* are device- and driver-dependent.
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*/
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struct format_op {
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char *df_buf;
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int df_count; /* value-result */
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daddr_t df_startblk;
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int df_reg[8]; /* result */
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int df_count; /* value-result */
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daddr_t df_startblk;
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int df_reg[8]; /* result */
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};
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/*
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* Structure used internally to retrieve
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* information about a partition on a disk.
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*/
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* Structure used internally to retrieve information about a partition
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* on a disk.
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*/
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struct partinfo {
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struct disklabel *disklab;
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struct partition *part;
|
||||
struct disklabel *disklab;
|
||||
struct partition *part;
|
||||
};
|
||||
|
||||
/* DOS partition table -- located in boot block */
|
||||
|
||||
#if defined(PC98) && !defined(PC98_ATCOMPAT)
|
||||
#define DOSBBSECTOR 0 /* DOS boot block relative sector number */
|
||||
#define DOSLABELSECTOR 1 /* 0: 256b/s, 1: 512b/s */
|
||||
#define DOSPARTOFF 0
|
||||
#define NDOSPART 16
|
||||
#define DOSPTYP_386BSD 0x94 /* 386BSD partition type */
|
||||
#define MBR_PTYPE_FreeBSD 0x94 /* FreeBSD partition type */
|
||||
|
||||
struct dos_partition {
|
||||
unsigned char dp_mid;
|
||||
#define DOSMID_386BSD (0x14|0x80) /* 386bsd|bootable */
|
||||
unsigned char dp_sid;
|
||||
#define DOSSID_386BSD (0x44|0x80) /* 386bsd|active */
|
||||
unsigned char dp_dum1;
|
||||
unsigned char dp_dum2;
|
||||
unsigned char dp_ipl_sct;
|
||||
unsigned char dp_ipl_head;
|
||||
unsigned short dp_ipl_cyl;
|
||||
unsigned char dp_ssect; /* starting sector */
|
||||
unsigned char dp_shd; /* starting head */
|
||||
unsigned short dp_scyl; /* starting cylinder */
|
||||
unsigned char dp_esect; /* end sector */
|
||||
unsigned char dp_ehd; /* end head */
|
||||
unsigned short dp_ecyl; /* end cylinder */
|
||||
unsigned char dp_name[16];
|
||||
};
|
||||
|
||||
#else /* IBMPC */
|
||||
#define DOSBBSECTOR 0 /* DOS boot block relative sector number */
|
||||
#define DOSPARTOFF 446
|
||||
#define NDOSPART 4
|
||||
#define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */
|
||||
|
||||
struct dos_partition {
|
||||
unsigned char dp_flag; /* bootstrap flags */
|
||||
unsigned char dp_shd; /* starting head */
|
||||
unsigned char dp_ssect; /* starting sector */
|
||||
unsigned char dp_scyl; /* starting cylinder */
|
||||
unsigned char dp_typ; /* partition type */
|
||||
unsigned char dp_ehd; /* end head */
|
||||
unsigned char dp_esect; /* end sector */
|
||||
unsigned char dp_ecyl; /* end cylinder */
|
||||
u_int32_t dp_start; /* absolute starting sector number */
|
||||
u_int32_t dp_size; /* partition size in sectors */
|
||||
};
|
||||
#endif
|
||||
|
||||
#define DPSECT(s) ((s) & 0x3f) /* isolate relevant bits of sector */
|
||||
#define DPCYL(c, s) ((c) + (((s) & 0xc0)<<2)) /* and those that are cylinder */
|
||||
|
||||
/*
|
||||
* Disk-specific ioctls.
|
||||
* Disk-specific ioctls.
|
||||
*/
|
||||
/* get and set disklabel; DIOCGPART used internally */
|
||||
#define DIOCGDINFO _IOR('d', 101, struct disklabel)/* get */
|
||||
#define DIOCSDINFO _IOW('d', 102, struct disklabel)/* set */
|
||||
#define DIOCWDINFO _IOW('d', 103, struct disklabel)/* set, update disk */
|
||||
#define DIOCGPART _IOW('d', 104, struct partinfo) /* get partition */
|
||||
|
||||
#define DIOCWLABEL _IOW('d', 109, int) /* write en/disable label */
|
||||
|
||||
#ifdef _KERNEL
|
||||
|
||||
/*
|
||||
* XXX encoding of disk minor numbers, should be elsewhere.
|
||||
*
|
||||
* See <sys/reboot.h> for a possibly better encoding.
|
||||
*
|
||||
* "cpio -H newc" can be used to back up device files with large minor
|
||||
* numbers (but not ones >= 2^31). Old cpio formats and all tar formats
|
||||
* don't have enough bits, and cpio and tar don't notice the lossage.
|
||||
* There are also some sign extension bugs.
|
||||
*/
|
||||
|
||||
/*
|
||||
3 2 1 0
|
||||
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
|
||||
_________________________________________________________________
|
||||
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
|
||||
-----------------------------------------------------------------
|
||||
| TYPE |UNIT_2 | SLICE | MAJOR? | UNIT |PART |
|
||||
-----------------------------------------------------------------
|
||||
*/
|
||||
/* get and set disklabel; DIOCGPART used internally */
|
||||
#define DIOCGDINFO _IOR('d', 101, struct disklabel) /* get */
|
||||
#define DIOCSDINFO _IOW('d', 102, struct disklabel) /* set */
|
||||
#define DIOCWDINFO _IOW('d', 103, struct disklabel) /* set, update disk */
|
||||
#define DIOCGPART _IOW('d', 104, struct partinfo) /* get partition */
|
||||
#define dkmakeminor(unit, slice, part) \
|
||||
(((slice) << 16) | (((unit) & 0x1e0) << 16) | \
|
||||
(((unit) & 0x1f) << 3) | (part))
|
||||
static __inline dev_t
|
||||
dkmodpart(dev_t dev, int part)
|
||||
{
|
||||
return (makedev(major(dev), (minor(dev) & ~7) | part));
|
||||
}
|
||||
|
||||
/* do format operation, read or write */
|
||||
#define DIOCRFORMAT _IOWR('d', 105, struct format_op)
|
||||
#define DIOCWFORMAT _IOWR('d', 106, struct format_op)
|
||||
static __inline dev_t
|
||||
dkmodslice(dev_t dev, int slice)
|
||||
{
|
||||
return (makedev(major(dev), (minor(dev) & ~0x1f0000) | (slice << 16)));
|
||||
}
|
||||
|
||||
#define DIOCSSTEP _IOW('d', 107, int) /* set step rate */
|
||||
#define DIOCSRETRIES _IOW('d', 108, int) /* set # of retries */
|
||||
#define DIOCWLABEL _IOW('d', 109, int) /* write en/disable label */
|
||||
#define dkpart(dev) (minor(dev) & 7)
|
||||
#define dkslice(dev) ((minor(dev) >> 16) & 0x1f)
|
||||
#define dktype(dev) ((minor(dev) >> 25) & 0x7f)
|
||||
|
||||
#define DIOCSBAD _IOW('d', 110, struct dkbad) /* set kernel dkbad */
|
||||
static __inline u_int
|
||||
dkunit(dev_t dev)
|
||||
{
|
||||
return (((minor(dev) >> 16) & 0x1e0) | ((minor(dev) >> 3) & 0x1f));
|
||||
}
|
||||
|
||||
#endif LOCORE
|
||||
struct buf;
|
||||
struct buf_queue_head;
|
||||
|
||||
int bounds_check_with_label __P((struct buf *bp, struct disklabel *lp,
|
||||
int wlabel));
|
||||
void diskerr __P((struct buf *bp, char *what, int pri, int blkdone,
|
||||
struct disklabel *lp));
|
||||
void disksort __P((struct buf *ap, struct buf *bp));
|
||||
u_int dkcksum __P((struct disklabel *lp));
|
||||
char *readdisklabel __P((dev_t dev, struct disklabel *lp));
|
||||
void bufqdisksort __P((struct buf_queue_head *ap, struct buf *bp));
|
||||
int setdisklabel __P((struct disklabel *olp, struct disklabel *nlp,
|
||||
u_long openmask));
|
||||
int writedisklabel __P((dev_t dev, struct disklabel *lp));
|
||||
#ifdef __alpha__
|
||||
void alpha_fix_srm_checksum __P((struct buf *bp));
|
||||
#endif
|
||||
|
||||
#endif /* _KERNEL */
|
||||
|
||||
#endif /* LOCORE */
|
||||
|
||||
#ifndef _KERNEL
|
||||
__BEGIN_DECLS
|
||||
struct disklabel *getdiskbyname __P((const char *));
|
||||
__END_DECLS
|
||||
#endif
|
||||
|
||||
#endif /* !_SYS_DISKLABEL_H_ */
|
||||
.Ed
|
||||
.Sh SEE ALSO
|
||||
.Xr disktab 5 ,
|
||||
|
|
|
|||
|
|
@ -106,17 +106,37 @@ The format of the disk label, as specified in
|
|||
.Pa <sys/disklabel.h> ,
|
||||
is
|
||||
.Bd -literal
|
||||
/*
|
||||
* Disk description table, see disktab(5)
|
||||
*/
|
||||
#define DISKTAB "/etc/disktab"
|
||||
#ifndef _SYS_DISKLABEL_H_
|
||||
#define _SYS_DISKLABEL_H_
|
||||
|
||||
#ifndef _KERNEL
|
||||
#include <sys/types.h>
|
||||
#endif
|
||||
#include <sys/ioccom.h>
|
||||
|
||||
/*
|
||||
* Each disk has a label which includes information about the hardware
|
||||
* disk geometry, filesystem partitions, and drive specific information.
|
||||
* The label is in block 0 or 1, possibly offset from the beginning
|
||||
* to leave room for a bootstrap, etc.
|
||||
*/
|
||||
* Disk description table, see disktab(5)
|
||||
*/
|
||||
#define _PATH_DISKTAB "/etc/disktab"
|
||||
#define DISKTAB "/etc/disktab" /* deprecated */
|
||||
|
||||
/*
|
||||
* Each disk has a label which includes information about the hardware
|
||||
* disk geometry, filesystem partitions, and drive specific information.
|
||||
* The label is in block 0 or 1, possibly offset from the beginning
|
||||
* to leave room for a bootstrap, etc.
|
||||
*/
|
||||
|
||||
/* XXX these should be defined per controller (or drive) elsewhere, not here! */
|
||||
#ifdef __i386__
|
||||
#define LABELSECTOR 1 /* sector containing label */
|
||||
#define LABELOFFSET 0 /* offset of label in sector */
|
||||
#endif
|
||||
|
||||
#ifdef __alpha__
|
||||
#define LABELSECTOR 0
|
||||
#define LABELOFFSET 64
|
||||
#endif
|
||||
|
||||
#ifndef LABELSECTOR
|
||||
#define LABELSECTOR 0 /* sector containing label */
|
||||
|
|
@ -126,124 +146,142 @@ is
|
|||
#define LABELOFFSET 64 /* offset of label in sector */
|
||||
#endif
|
||||
|
||||
#define DISKMAGIC ((u_long) 0x82564557) /* The disk magic number */
|
||||
#define DISKMAGIC ((u_int32_t)0x82564557) /* The disk magic number */
|
||||
#ifndef MAXPARTITIONS
|
||||
#define MAXPARTITIONS 8
|
||||
#endif
|
||||
|
||||
#define LABEL_PART 2 /* partition containing label */
|
||||
#define RAW_PART 2 /* partition containing whole disk */
|
||||
#define SWAP_PART 1 /* partition normally containing swap */
|
||||
|
||||
#ifndef LOCORE
|
||||
struct disklabel {
|
||||
u_long d_magic; /* the magic number */
|
||||
short d_type; /* drive type */
|
||||
short d_subtype; /* controller/d_type specific */
|
||||
char d_typename[16]; /* type name, e.g. "eagle" */
|
||||
u_int32_t d_magic; /* the magic number */
|
||||
u_int16_t d_type; /* drive type */
|
||||
u_int16_t d_subtype; /* controller/d_type specific */
|
||||
char d_typename[16]; /* type name, e.g. "eagle" */
|
||||
|
||||
/*
|
||||
* d_packname contains the pack identifier and is returned when
|
||||
* the disklabel is read off the disk or in-core copy.
|
||||
* d_boot0 and d_boot1 are the (optional) names of the
|
||||
* primary (block 0) and secondary (block 1-15) bootstraps
|
||||
* as found in /boot. These are returned when using
|
||||
* getdiskbyname(3)
|
||||
to retrieve the values from /etc/disktab.
|
||||
*/
|
||||
#if defined(KERNEL) || defined(STANDALONE)
|
||||
char d_packname[16]; /* pack identifier */
|
||||
#else
|
||||
* d_packname contains the pack identifier and is returned when
|
||||
* the disklabel is read off the disk or in-core copy.
|
||||
* d_boot0 and d_boot1 are the (optional) names of the
|
||||
* primary (block 0) and secondary (block 1-15) bootstraps
|
||||
* as found in /boot. These are returned when using
|
||||
* getdiskbyname(3) to retrieve the values from /etc/disktab.
|
||||
*/
|
||||
union {
|
||||
char un_d_packname[16]; /* pack identifier */
|
||||
char un_d_packname[16]; /* pack identifier */
|
||||
struct {
|
||||
char *un_d_boot0; /* primary bootstrap name */
|
||||
char *un_d_boot1; /* secondary bootstrap name */
|
||||
} un_b;
|
||||
} d_un;
|
||||
|
||||
} un_b;
|
||||
} d_un;
|
||||
#define d_packname d_un.un_d_packname
|
||||
#define d_boot0 d_un.un_b.un_d_boot0
|
||||
#define d_boot1 d_un.un_b.un_d_boot1
|
||||
#endif /* ! KERNEL or STANDALONE */
|
||||
|
||||
/* disk geometry: */
|
||||
u_long d_secsize; /* # of bytes per sector */
|
||||
u_long d_nsectors; /* # of data sectors per track */
|
||||
u_long d_ntracks; /* # of tracks per cylinder */
|
||||
u_long d_ncylinders; /* # of data cylinders per unit */
|
||||
u_long d_secpercyl; /* # of data sectors per cylinder */
|
||||
u_long d_secperunit; /* # of data sectors per unit */
|
||||
/*
|
||||
* Spares (bad sector replacements) below
|
||||
* are not counted in d_nsectors or d_secpercyl.
|
||||
* Spare sectors are assumed to be physical sectors
|
||||
* which occupy space at the end of each track and/or cylinder.
|
||||
*/
|
||||
u_short d_sparespertrack; /* # of spare sectors per track */
|
||||
u_short d_sparespercyl; /* # of spare sectors per cylinder */
|
||||
/*
|
||||
* Alternate cylinders include maintenance, replacement,
|
||||
* configuration description areas, etc.
|
||||
*/
|
||||
u_long d_acylinders; /* # of alt. cylinders per unit */
|
||||
/* disk geometry: */
|
||||
u_int32_t d_secsize; /* # of bytes per sector */
|
||||
u_int32_t d_nsectors; /* # of data sectors per track */
|
||||
u_int32_t d_ntracks; /* # of tracks per cylinder */
|
||||
u_int32_t d_ncylinders; /* # of data cylinders per unit */
|
||||
u_int32_t d_secpercyl; /* # of data sectors per cylinder */
|
||||
u_int32_t d_secperunit; /* # of data sectors per unit */
|
||||
|
||||
/* hardware characteristics: */
|
||||
/*
|
||||
* d_interleave, d_trackskew and d_cylskew describe perturbations
|
||||
* in the media format used to compensate for a slow controller.
|
||||
* Interleave is physical sector interleave, set up by the formatter
|
||||
* or controller when formatting. When interleaving is in use,
|
||||
* logically adjacent sectors are not physically contiguous,
|
||||
* but instead are separated by some number of sectors.
|
||||
* It is specified as the ratio of physical sectors traversed
|
||||
* per logical sector. Thus an interleave of 1:1 implies contiguous
|
||||
* layout, while 2:1 implies that logical sector 0 is separated
|
||||
* by one sector from logical sector 1.
|
||||
* d_trackskew is the offset of sector 0 on track N
|
||||
* relative to sector 0 on track N-1 on the same cylinder.
|
||||
* Finally, d_cylskew is the offset of sector 0 on cylinder N
|
||||
* relative to sector 0 on cylinder N-1.
|
||||
*/
|
||||
u_short d_rpm; /* rotational speed */
|
||||
u_short d_interleave; /* hardware sector interleave */
|
||||
u_short d_trackskew; /* sector 0 skew, per track */
|
||||
u_short d_cylskew; /* sector 0 skew, per cylinder */
|
||||
u_long d_headswitch; /* head switch time, usec */
|
||||
u_long d_trkseek; /* track-to-track seek, usec */
|
||||
u_long d_flags; /* generic flags */
|
||||
* Spares (bad sector replacements) below are not counted in
|
||||
* d_nsectors or d_secpercyl. Spare sectors are assumed to
|
||||
* be physical sectors which occupy space at the end of each
|
||||
* track and/or cylinder.
|
||||
*/
|
||||
u_int16_t d_sparespertrack; /* # of spare sectors per track */
|
||||
u_int16_t d_sparespercyl; /* # of spare sectors per cylinder */
|
||||
/*
|
||||
* Alternate cylinders include maintenance, replacement, configuration
|
||||
* description areas, etc.
|
||||
*/
|
||||
u_int32_t d_acylinders; /* # of alt. cylinders per unit */
|
||||
|
||||
/* hardware characteristics: */
|
||||
/*
|
||||
* d_interleave, d_trackskew and d_cylskew describe perturbations
|
||||
* in the media format used to compensate for a slow controller.
|
||||
* Interleave is physical sector interleave, set up by the
|
||||
* formatter or controller when formatting. When interleaving is
|
||||
* in use, logically adjacent sectors are not physically
|
||||
* contiguous, but instead are separated by some number of
|
||||
* sectors. It is specified as the ratio of physical sectors
|
||||
* traversed per logical sector. Thus an interleave of 1:1
|
||||
* implies contiguous layout, while 2:1 implies that logical
|
||||
* sector 0 is separated by one sector from logical sector 1.
|
||||
* d_trackskew is the offset of sector 0 on track N relative to
|
||||
* sector 0 on track N-1 on the same cylinder. Finally, d_cylskew
|
||||
* is the offset of sector 0 on cylinder N relative to sector 0
|
||||
* on cylinder N-1.
|
||||
*/
|
||||
u_int16_t d_rpm; /* rotational speed */
|
||||
u_int16_t d_interleave; /* hardware sector interleave */
|
||||
u_int16_t d_trackskew; /* sector 0 skew, per track */
|
||||
u_int16_t d_cylskew; /* sector 0 skew, per cylinder */
|
||||
u_int32_t d_headswitch; /* head switch time, usec */
|
||||
u_int32_t d_trkseek; /* track-to-track seek, usec */
|
||||
u_int32_t d_flags; /* generic flags */
|
||||
#define NDDATA 5
|
||||
u_long d_drivedata[NDDATA]; /* drive-type specific information */
|
||||
u_int32_t d_drivedata[NDDATA]; /* drive-type specific information */
|
||||
#define NSPARE 5
|
||||
u_long d_spare[NSPARE]; /* reserved for future use */
|
||||
u_long d_magic2; /* the magic number (again) */
|
||||
u_short d_checksum; /* xor of data incl. partitions */
|
||||
u_int32_t d_spare[NSPARE]; /* reserved for future use */
|
||||
u_int32_t d_magic2; /* the magic number (again) */
|
||||
u_int16_t d_checksum; /* xor of data incl. partitions */
|
||||
|
||||
/* filesystem and partition information: */
|
||||
u_short d_npartitions; /* number of partitions in following */
|
||||
u_long d_bbsize; /* size of boot area at sn0, bytes */
|
||||
u_long d_sbsize; /* max size of fs superblock, bytes */
|
||||
struct partition { /* the partition table */
|
||||
u_long p_size; /* number of sectors in partition */
|
||||
u_long p_offset; /* starting sector */
|
||||
u_long p_fsize; /* filesystem basic fragment size */
|
||||
u_char p_fstype; /* filesystem type, see below */
|
||||
u_char p_frag; /* filesystem fragments per block */
|
||||
/* filesystem and partition information: */
|
||||
u_int16_t d_npartitions; /* number of partitions in following */
|
||||
u_int32_t d_bbsize; /* size of boot area at sn0, bytes */
|
||||
u_int32_t d_sbsize; /* max size of fs superblock, bytes */
|
||||
struct partition { /* the partition table */
|
||||
u_int32_t p_size; /* number of sectors in partition */
|
||||
u_int32_t p_offset; /* starting sector */
|
||||
u_int32_t p_fsize; /* filesystem basic fragment size */
|
||||
u_int8_t p_fstype; /* filesystem type, see below */
|
||||
u_int8_t p_frag; /* filesystem fragments per block */
|
||||
union {
|
||||
u_short cpg; /* UFS: FS cylinders per group */
|
||||
u_short sgs; /* LFS: FS segment shift */
|
||||
u_int16_t cpg; /* UFS: FS cylinders per group */
|
||||
u_int16_t sgs; /* LFS: FS segment shift */
|
||||
} __partition_u1;
|
||||
#define p_cpg __partition_u1.cpg
|
||||
#define p_sgs __partition_u1.sgs
|
||||
u_short p_cpg; /* filesystem cylinders per group */
|
||||
} d_partitions[MAXPARTITIONS]; /* actually may be more */
|
||||
};
|
||||
#else /* LOCORE */
|
||||
/*
|
||||
* offsets for asm boot files.
|
||||
*/
|
||||
.set d_secsize,40
|
||||
.set d_nsectors,44
|
||||
.set d_ntracks,48
|
||||
.set d_ncylinders,52
|
||||
.set d_secpercyl,56
|
||||
.set d_secperunit,60
|
||||
.set d_end_,276 /* size of disk label */
|
||||
#endif /* LOCORE */
|
||||
|
||||
/* d_type values: */
|
||||
#define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
|
||||
#define DTYPE_MSCP 2 /* MSCP */
|
||||
#define DTYPE_DEC 3 /* other DEC (rk, rl) */
|
||||
#define DTYPE_SCSI 4 /* SCSI */
|
||||
#define DTYPE_ESDI 5 /* ESDI interface */
|
||||
#define DTYPE_ST506 6 /* ST506 etc. */
|
||||
#define DTYPE_HPIB 7 /* CS/80 on HP-IB */
|
||||
#define DTYPE_HPFL 8 /* HP Fiber-link */
|
||||
#define DTYPE_FLOPPY 10 /* floppy */
|
||||
#define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */
|
||||
#define DTYPE_MSCP 2 /* MSCP */
|
||||
#define DTYPE_DEC 3 /* other DEC (rk, rl) */
|
||||
#define DTYPE_SCSI 4 /* SCSI */
|
||||
#define DTYPE_ESDI 5 /* ESDI interface */
|
||||
#define DTYPE_ST506 6 /* ST506 etc. */
|
||||
#define DTYPE_HPIB 7 /* CS/80 on HP-IB */
|
||||
#define DTYPE_HPFL 8 /* HP Fiber-link */
|
||||
#define DTYPE_FLOPPY 10 /* floppy */
|
||||
#define DTYPE_CCD 11 /* concatenated disk */
|
||||
#define DTYPE_VINUM 12 /* vinum volume */
|
||||
#define DTYPE_DOC2K 13 /* Msys DiskOnChip */
|
||||
|
||||
#if defined(PC98) && !defined(PC98_ATCOMPAT)
|
||||
#define DSTYPE_SEC256 0x80 /* physical sector size=256 */
|
||||
#endif
|
||||
|
||||
#ifdef DKTYPENAMES
|
||||
static char *dktypenames[] = {
|
||||
|
|
@ -258,30 +296,34 @@ static char *dktypenames[] = {
|
|||
"HP-FL",
|
||||
"type 9",
|
||||
"floppy",
|
||||
0
|
||||
"CCD",
|
||||
"Vinum",
|
||||
"DOC2K",
|
||||
NULL
|
||||
};
|
||||
#define DKMAXTYPES (sizeof(dktypenames) / sizeof(dktypenames[0]) - 1)
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Filesystem type and version.
|
||||
* Used to interpret other filesystem-specific
|
||||
* per-partition information.
|
||||
*/
|
||||
#define FS_UNUSED 0 /* unused */
|
||||
#define FS_SWAP 1 /* swap */
|
||||
#define FS_V6 2 /* Sixth Edition */
|
||||
#define FS_V7 3 /* Seventh Edition */
|
||||
#define FS_SYSV 4 /* System V */
|
||||
#define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
|
||||
#define FS_V8 6 /* Eighth Edition, 4K blocks */
|
||||
#define FS_BSDFFS 7 /* 4.2BSD fast file system */
|
||||
#define FS_MSDOS 8 /* MSDOS file system */
|
||||
#define FS_BSDLFS 9 /* 4.4BSD log-structured file system */
|
||||
#define FS_OTHER 10 /* in use, but unknown/unsupported */
|
||||
#define FS_HPFS 11 /* OS/2 high-performance file system */
|
||||
#define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */
|
||||
#define FS_BOOT 13 /* partition contains bootstrap */
|
||||
* Filesystem type and version.
|
||||
* Used to interpret other filesystem-specific
|
||||
* per-partition information.
|
||||
*/
|
||||
#define FS_UNUSED 0 /* unused */
|
||||
#define FS_SWAP 1 /* swap */
|
||||
#define FS_V6 2 /* Sixth Edition */
|
||||
#define FS_V7 3 /* Seventh Edition */
|
||||
#define FS_SYSV 4 /* System V */
|
||||
#define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
|
||||
#define FS_V8 6 /* Eighth Edition, 4K blocks */
|
||||
#define FS_BSDFFS 7 /* 4.2BSD fast file system */
|
||||
#define FS_MSDOS 8 /* MSDOS file system */
|
||||
#define FS_BSDLFS 9 /* 4.4BSD log-structured file system */
|
||||
#define FS_OTHER 10 /* in use, but unknown/unsupported */
|
||||
#define FS_HPFS 11 /* OS/2 high-performance file system */
|
||||
#define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */
|
||||
#define FS_BOOT 13 /* partition contains bootstrap */
|
||||
#define FS_VINUM 14 /* Vinum drive */
|
||||
|
||||
#ifdef DKTYPENAMES
|
||||
static char *fstypenames[] = {
|
||||
|
|
@ -299,35 +341,35 @@ static char *fstypenames[] = {
|
|||
"HPFS",
|
||||
"ISO9660",
|
||||
"boot",
|
||||
0
|
||||
"vinum",
|
||||
NULL
|
||||
};
|
||||
#define FSMAXTYPES (sizeof(fstypenames) / sizeof(fstypenames[0]) - 1)
|
||||
#endif
|
||||
|
||||
/*
|
||||
* flags shared by various drives:
|
||||
*/
|
||||
#define D_REMOVABLE 0x01 /* removable media */
|
||||
#define D_ECC 0x02 /* supports ECC */
|
||||
#define D_BADSECT 0x04 /* supports bad sector forw. */
|
||||
#define D_RAMDISK 0x08 /* disk emulator */
|
||||
#define D_CHAIN 0x10 /* can do back-back transfers */
|
||||
* flags shared by various drives:
|
||||
*/
|
||||
#define D_REMOVABLE 0x01 /* removable media */
|
||||
#define D_ECC 0x02 /* supports ECC */
|
||||
#define D_BADSECT 0x04 /* supports bad sector forw. */
|
||||
#define D_RAMDISK 0x08 /* disk emulator */
|
||||
#define D_CHAIN 0x10 /* can do back-back transfers */
|
||||
|
||||
/*
|
||||
* Drive data for SMD.
|
||||
*/
|
||||
|
||||
* Drive data for SMD.
|
||||
*/
|
||||
#define d_smdflags d_drivedata[0]
|
||||
#define D_SSE 0x1 /* supports skip sectoring */
|
||||
#define D_SSE 0x1 /* supports skip sectoring */
|
||||
#define d_mindist d_drivedata[1]
|
||||
#define d_maxdist d_drivedata[2]
|
||||
#define d_sdist d_drivedata[3]
|
||||
|
||||
/*
|
||||
* Drive data for ST506.
|
||||
*/
|
||||
* Drive data for ST506.
|
||||
*/
|
||||
#define d_precompcyl d_drivedata[0]
|
||||
#define d_gap3 d_drivedata[1] /* used only when formatting */
|
||||
#define d_gap3 d_drivedata[1] /* used only when formatting */
|
||||
|
||||
/*
|
||||
* Drive data for SCSI.
|
||||
|
|
@ -336,48 +378,165 @@ static char *fstypenames[] = {
|
|||
|
||||
#ifndef LOCORE
|
||||
/*
|
||||
* Structure used to perform a format
|
||||
* or other raw operation, returning data
|
||||
* and/or register values.
|
||||
* Register identification and format
|
||||
* are device- and driver-dependent.
|
||||
*/
|
||||
* Structure used to perform a format or other raw operation, returning
|
||||
* data and/or register values. Register identification and format
|
||||
* are device- and driver-dependent.
|
||||
*/
|
||||
struct format_op {
|
||||
char *df_buf;
|
||||
int df_count; /* value-result */
|
||||
daddr_t df_startblk;
|
||||
int df_reg[8]; /* result */
|
||||
int df_count; /* value-result */
|
||||
daddr_t df_startblk;
|
||||
int df_reg[8]; /* result */
|
||||
};
|
||||
|
||||
/*
|
||||
* Structure used internally to retrieve
|
||||
* information about a partition on a disk.
|
||||
*/
|
||||
* Structure used internally to retrieve information about a partition
|
||||
* on a disk.
|
||||
*/
|
||||
struct partinfo {
|
||||
struct disklabel *disklab;
|
||||
struct partition *part;
|
||||
struct disklabel *disklab;
|
||||
struct partition *part;
|
||||
};
|
||||
|
||||
/* DOS partition table -- located in boot block */
|
||||
|
||||
#if defined(PC98) && !defined(PC98_ATCOMPAT)
|
||||
#define DOSBBSECTOR 0 /* DOS boot block relative sector number */
|
||||
#define DOSLABELSECTOR 1 /* 0: 256b/s, 1: 512b/s */
|
||||
#define DOSPARTOFF 0
|
||||
#define NDOSPART 16
|
||||
#define DOSPTYP_386BSD 0x94 /* 386BSD partition type */
|
||||
#define MBR_PTYPE_FreeBSD 0x94 /* FreeBSD partition type */
|
||||
|
||||
struct dos_partition {
|
||||
unsigned char dp_mid;
|
||||
#define DOSMID_386BSD (0x14|0x80) /* 386bsd|bootable */
|
||||
unsigned char dp_sid;
|
||||
#define DOSSID_386BSD (0x44|0x80) /* 386bsd|active */
|
||||
unsigned char dp_dum1;
|
||||
unsigned char dp_dum2;
|
||||
unsigned char dp_ipl_sct;
|
||||
unsigned char dp_ipl_head;
|
||||
unsigned short dp_ipl_cyl;
|
||||
unsigned char dp_ssect; /* starting sector */
|
||||
unsigned char dp_shd; /* starting head */
|
||||
unsigned short dp_scyl; /* starting cylinder */
|
||||
unsigned char dp_esect; /* end sector */
|
||||
unsigned char dp_ehd; /* end head */
|
||||
unsigned short dp_ecyl; /* end cylinder */
|
||||
unsigned char dp_name[16];
|
||||
};
|
||||
|
||||
#else /* IBMPC */
|
||||
#define DOSBBSECTOR 0 /* DOS boot block relative sector number */
|
||||
#define DOSPARTOFF 446
|
||||
#define NDOSPART 4
|
||||
#define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */
|
||||
|
||||
struct dos_partition {
|
||||
unsigned char dp_flag; /* bootstrap flags */
|
||||
unsigned char dp_shd; /* starting head */
|
||||
unsigned char dp_ssect; /* starting sector */
|
||||
unsigned char dp_scyl; /* starting cylinder */
|
||||
unsigned char dp_typ; /* partition type */
|
||||
unsigned char dp_ehd; /* end head */
|
||||
unsigned char dp_esect; /* end sector */
|
||||
unsigned char dp_ecyl; /* end cylinder */
|
||||
u_int32_t dp_start; /* absolute starting sector number */
|
||||
u_int32_t dp_size; /* partition size in sectors */
|
||||
};
|
||||
#endif
|
||||
|
||||
#define DPSECT(s) ((s) & 0x3f) /* isolate relevant bits of sector */
|
||||
#define DPCYL(c, s) ((c) + (((s) & 0xc0)<<2)) /* and those that are cylinder */
|
||||
|
||||
/*
|
||||
* Disk-specific ioctls.
|
||||
* Disk-specific ioctls.
|
||||
*/
|
||||
/* get and set disklabel; DIOCGPART used internally */
|
||||
#define DIOCGDINFO _IOR('d', 101, struct disklabel)/* get */
|
||||
#define DIOCSDINFO _IOW('d', 102, struct disklabel)/* set */
|
||||
#define DIOCWDINFO _IOW('d', 103, struct disklabel)/* set, update disk */
|
||||
#define DIOCGPART _IOW('d', 104, struct partinfo) /* get partition */
|
||||
|
||||
#define DIOCWLABEL _IOW('d', 109, int) /* write en/disable label */
|
||||
|
||||
#ifdef _KERNEL
|
||||
|
||||
/*
|
||||
* XXX encoding of disk minor numbers, should be elsewhere.
|
||||
*
|
||||
* See <sys/reboot.h> for a possibly better encoding.
|
||||
*
|
||||
* "cpio -H newc" can be used to back up device files with large minor
|
||||
* numbers (but not ones >= 2^31). Old cpio formats and all tar formats
|
||||
* don't have enough bits, and cpio and tar don't notice the lossage.
|
||||
* There are also some sign extension bugs.
|
||||
*/
|
||||
|
||||
/*
|
||||
3 2 1 0
|
||||
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
|
||||
_________________________________________________________________
|
||||
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
|
||||
-----------------------------------------------------------------
|
||||
| TYPE |UNIT_2 | SLICE | MAJOR? | UNIT |PART |
|
||||
-----------------------------------------------------------------
|
||||
*/
|
||||
/* get and set disklabel; DIOCGPART used internally */
|
||||
#define DIOCGDINFO _IOR('d', 101, struct disklabel) /* get */
|
||||
#define DIOCSDINFO _IOW('d', 102, struct disklabel) /* set */
|
||||
#define DIOCWDINFO _IOW('d', 103, struct disklabel) /* set, update disk */
|
||||
#define DIOCGPART _IOW('d', 104, struct partinfo) /* get partition */
|
||||
#define dkmakeminor(unit, slice, part) \
|
||||
(((slice) << 16) | (((unit) & 0x1e0) << 16) | \
|
||||
(((unit) & 0x1f) << 3) | (part))
|
||||
static __inline dev_t
|
||||
dkmodpart(dev_t dev, int part)
|
||||
{
|
||||
return (makedev(major(dev), (minor(dev) & ~7) | part));
|
||||
}
|
||||
|
||||
/* do format operation, read or write */
|
||||
#define DIOCRFORMAT _IOWR('d', 105, struct format_op)
|
||||
#define DIOCWFORMAT _IOWR('d', 106, struct format_op)
|
||||
static __inline dev_t
|
||||
dkmodslice(dev_t dev, int slice)
|
||||
{
|
||||
return (makedev(major(dev), (minor(dev) & ~0x1f0000) | (slice << 16)));
|
||||
}
|
||||
|
||||
#define DIOCSSTEP _IOW('d', 107, int) /* set step rate */
|
||||
#define DIOCSRETRIES _IOW('d', 108, int) /* set # of retries */
|
||||
#define DIOCWLABEL _IOW('d', 109, int) /* write en/disable label */
|
||||
#define dkpart(dev) (minor(dev) & 7)
|
||||
#define dkslice(dev) ((minor(dev) >> 16) & 0x1f)
|
||||
#define dktype(dev) ((minor(dev) >> 25) & 0x7f)
|
||||
|
||||
#define DIOCSBAD _IOW('d', 110, struct dkbad) /* set kernel dkbad */
|
||||
static __inline u_int
|
||||
dkunit(dev_t dev)
|
||||
{
|
||||
return (((minor(dev) >> 16) & 0x1e0) | ((minor(dev) >> 3) & 0x1f));
|
||||
}
|
||||
|
||||
#endif LOCORE
|
||||
struct buf;
|
||||
struct buf_queue_head;
|
||||
|
||||
int bounds_check_with_label __P((struct buf *bp, struct disklabel *lp,
|
||||
int wlabel));
|
||||
void diskerr __P((struct buf *bp, char *what, int pri, int blkdone,
|
||||
struct disklabel *lp));
|
||||
void disksort __P((struct buf *ap, struct buf *bp));
|
||||
u_int dkcksum __P((struct disklabel *lp));
|
||||
char *readdisklabel __P((dev_t dev, struct disklabel *lp));
|
||||
void bufqdisksort __P((struct buf_queue_head *ap, struct buf *bp));
|
||||
int setdisklabel __P((struct disklabel *olp, struct disklabel *nlp,
|
||||
u_long openmask));
|
||||
int writedisklabel __P((dev_t dev, struct disklabel *lp));
|
||||
#ifdef __alpha__
|
||||
void alpha_fix_srm_checksum __P((struct buf *bp));
|
||||
#endif
|
||||
|
||||
#endif /* _KERNEL */
|
||||
|
||||
#endif /* LOCORE */
|
||||
|
||||
#ifndef _KERNEL
|
||||
__BEGIN_DECLS
|
||||
struct disklabel *getdiskbyname __P((const char *));
|
||||
__END_DECLS
|
||||
#endif
|
||||
|
||||
#endif /* !_SYS_DISKLABEL_H_ */
|
||||
.Ed
|
||||
.Sh SEE ALSO
|
||||
.Xr disktab 5 ,
|
||||
|
|
|
|||
Loading…
Reference in New Issue