Cider Isn't Darwin Emulation, Really
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#include <sys/appleapiopts.h>#include <sys/types.h> /* for daddr_t */
#ifdef __APPLE_API_OBSOLETE
/* * 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 location of the label, as well as the number of partitions the * label can describe and the number of the "whole disk" (raw) * paritition are machine dependent. */#include <machine/disklabel.h>
/* * The absolute maximum number of disk partitions allowed. * This is the maximum value of MAXPARTITIONS for which 'struct disklabel' * is <= DEV_BSIZE bytes long. If MAXPARTITIONS is greater than this, beware. */#define MAXMAXPARTITIONS 22#if MAXPARTITIONS > MAXMAXPARTITIONS#warning beware: MAXPARTITIONS bigger than MAXMAXPARTITIONS#endif
/* * Translate between device numbers and major/disk unit/disk partition. */#define DISKUNIT(dev) (minor(dev) / MAXPARTITIONS)#define DISKPART(dev) (minor(dev) % MAXPARTITIONS)#define MAKEDISKDEV(maj, unit, part) \ (makedev((maj), ((unit) * MAXPARTITIONS) + (part)))
#define DISKMAGIC ((u_int32_t)0x82564557) /* The disk magic number */
#ifndef LOCOREstruct disklabel { 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 /usr/mdec. These are returned when using * getdiskbyname(3) to retrieve the values from /etc/disktab. */ union { 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; #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
/* 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 */
/* * 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_int32_t d_drivedata[NDDATA]; /* drive-type specific information */#define NSPARE 5 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_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_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 } 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 */
#ifdef DKTYPENAMESstatic char *dktypenames[] = { "unknown", "SMD", "MSCP", "old DEC", "SCSI", "ESDI", "ST506", "HP-IB", "HP-FL", "type 9", "floppy", 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 */#define FS_ADOS 14 /* AmigaDOS fast file system */#define FS_HFS 15 /* Macintosh HFS */
#ifdef DKTYPENAMESstatic char *fstypenames[] = { "unused", "swap", "Version 6", "Version 7", "System V", "4.1BSD", "Eighth Edition", "4.2BSD", "MSDOS", "4.4LFS", "unknown", "HPFS", "ISO9660", "boot", "ADOS", "HFS", 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 */
/* * Drive data for SMD. */#define d_smdflags d_drivedata[0]#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. */#define d_precompcyl d_drivedata[0]#define d_gap3 d_drivedata[1] /* used only when formatting */
/* * Drive data for SCSI. */#define d_blind d_drivedata[0]
#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. */struct format_op { char *df_buf; 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. */struct partinfo { struct disklabel *disklab; struct partition *part;};
/* * 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 */
/* do format operation, read or write */#define DIOCRFORMAT _IOWR('d', 105, struct format_op)#define DIOCWFORMAT _IOWR('d', 106, struct format_op)
#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 DIOCSBAD _IOW('d', 110, struct dkbad) /* set kernel dkbad */
#endif /* LOCORE */
#if !defined(KERNEL) && !defined(LOCORE)
#include <sys/cdefs.h>
__BEGIN_DECLSstruct disklabel *getdiskbyname(const char *);__END_DECLS
#endif
#endif /* __APPLE_API_OBSOLETE */
#endif /* ! _SYS_DISKLABEL_H_ */