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Length: 11100 (0x2b5c)
Types: TextFile
Notes: UNIX file
Names: »vtoc.h«
└─⟦5fb5a153b⟧ Bits:30004042/hpdd.imd SW95705I 386/ix Multi-user Release 1.2
└─⟦5fb5a153b⟧ UNIX Filesystem
└─⟦this⟧ »hp/new/usr/include/sys/vtoc.h«
/* Copyright (c) 1987 AT&T */
/* All Rights Reserved */
/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
/* The copyright notice above does not evidence any */
/* actual or intended publication of such source code. */
/*
* VTOC.H
*/
#ident "@(#)vtoc.h 1.14 - 88/03/15"
#define V_NUMPAR 16 /* maximum number of partitions */
#define VTOC_SANE 0x600DDEEE /* Indicates a sane VTOC */
#define V_VERSION 0x02 /* layout version number */
/*
* V_VERSION HISTORY:
* 1 -- Initial release
* 2 -- Added V_REMAP flag to p_flag field so that alternate sector
* mapping could be enabled/disabled on a per-partition basis.
* Driver turns this bit on for all partitions (except 0) for
* a version 1 VTOC.
* (386/ix release 1.1, DLP)
*/
/* Partition identification tags */
#define V_BOOT 0x01 /* Boot partition */
#define V_ROOT 0x02 /* Root filesystem */
#define V_SWAP 0x03 /* Swap filesystem */
#define V_USR 0x04 /* Usr filesystem */
#define V_BACKUP 0x05 /* full disk */
#define V_ALTS 0x06 /* alternate sector space */
#define V_OTHER 0x07 /* non-unix space */
/* Partition permission flags */
#define V_UNMNT 0x01 /* non-mountable partition */
#define V_RONLY 0x10 /* Read only (except by IOCTL) */
#define V_REMAP 0x20 /* do alternate sector mapping */
#define V_OPEN 0x100 /* Partition open (for driver use) */
#define V_VALID 0x200 /* Partition is valid to use */
#define V_VOMASK 0x300 /* mask for open and valid */
/* Sanity word for the physical description area */
#define VALID_PD 0xCA5E600D
struct partition {
ushort p_tag; /*ID tag of partition*/
ushort p_flag; /*permision flags*/
daddr_t p_start; /*physical start sector no of partition*/
long p_size; /*# of physical sectors in partition*/
};
struct vtoc {
unsigned long v_sanity; /*to verify vtoc sanity*/
unsigned long v_version; /*layout version*/
char v_volume[8]; /*volume name*/
ushort v_nparts; /*number of partitions*/
ushort v_pad; /*pad for 286 compiler*/
unsigned long v_reserved[10]; /*free space*/
struct partition v_part[V_NUMPAR]; /*partition headers*/
};
struct pdinfo {
unsigned long driveid; /*identifies the device type*/
unsigned long sanity; /*verifies device sanity*/
unsigned long version; /*version number*/
char serial[12]; /*serial number of the device*/
unsigned long cyls; /*number of cylinders per drive*/
unsigned long tracks; /*number tracks per cylinder*/
unsigned long sectors; /*number sectors per track*/
unsigned long bytes; /*number of bytes per sector*/
unsigned long logicalst; /*sector address of logical sector 0*/
unsigned long errlogst; /*sector address of error log area*/
unsigned long errlogsz; /*size in bytes of error log area*/
unsigned long mfgst; /*sector address of mfg. defect info*/
unsigned long mfgsz; /*size in bytes of mfg. defect info*/
unsigned long defectst; /*sector address of the defect map*/
unsigned long defectsz; /*size in bytes of defect map*/
unsigned long relno; /*number of relocation areas*/
unsigned long relst; /*sector address of relocation area*/
unsigned long relsz; /*size in sectors of relocation area*/
unsigned long relnext; /*address of next avail reloc sector*/
/* the previous items are left intact from AT&T's 3b2 pdinfo. Following
are added for the 80386 port */
unsigned long vtoc_ptr; /*byte offset of vtoc block*/
unsigned short vtoc_len; /*byte length of vtoc block*/
unsigned short vtoc_pad; /* pad for 16-bit machine alignment */
unsigned long alt_ptr; /*byte offset of alternates table*/
unsigned short alt_len; /*byte length of alternates table*/
};
/* driver ioctl() commands */
#define VIOC ('V'<<8)
#define V_CONFIG (VIOC|1) /* Configure Drive */
#define V_REMOUNT (VIOC|2) /* Remount Drive */
#define V_ADDBAD (VIOC|3) /* Add Bad Sector */
#define V_GETPARMS (VIOC|4) /* Get drive/partition parameters */
#define V_FORMAT (VIOC|5) /* Format track(s) */
#define V_PDLOC (VIOC|6) /* Ask driver where pdinfo is on disk */
#define V_EXERRCTL (VIOC|7) /* Extended Error Control (arg is ON/OFF) */
#define V_GETERR (VIOC|8) /* Get extended error value */
#define V_RETRYCTL (VIOC|9) /* Retry control (arg is ON/OFF) */
#define V_DEFECTS (VIOC|10) /* Get defect list from drive */
#define V_FMTDRV (VIOC|11) /* Format entire drive (NOTE: This */
/* is only valid if DPCF_NOTRKFMT */
/* is set in dp_drvflags of V_GETPARMS */
/* data for partition 0 of drive) */
/* buffer for Get Defect List return. Pointer at an array of these structs
* should be in ia_def.defs on IOCTL call. On return, ia_def.ndef of these
* entries (max 50 currently, but could expand later on) will have been
* filled in. */
struct v_defect
{
ushort def_cylin; /* cylinder number of defect */
ushort def_offset; /* byte offset from index */
ushort def_len; /* defect length in bits */
};
/* the structures used for passing arguments to IOCTL. This union is used
* for all non-int types of arguments */
union io_arg {
struct {
ushort ncyl; /* number of cylinders on drive */
unsigned char nhead; /* number of heads/cyl */
unsigned char nsec; /* number of sectors/track */
ushort secsiz; /* number of bytes/sector */
} ia_cd; /* used for Configure Drive cmd */
struct {
ushort flags; /* flags (see below) */
daddr_t bad_sector; /* absolute sector number */
daddr_t new_sector; /* RETURNED alternate sect assigned */
} ia_abs; /* used for Add Bad Sector cmd */
struct {
ushort start_trk; /* first track # */
ushort num_trks; /* number of tracks to format */
ushort intlv; /* interleave factor */
} ia_fmt; /* used for Format Tracks cmd */
ushort ia_fmtdrv_intlv; /* used for Format Drive command */
struct {
ushort head; /* Head number */
ushort ndef; /* RETURNED number of defects on head */
struct v_defect *defs; /* pointer at defects buffer */
} ia_def; /* used for Get Defect List cmd */
} ;
/* Flags for Add Bad Sector command */
#define V_ABS_NEAR 1 /* Assign closest alternate available */
/* int-style arg for V_EXERRCTL */
#define V_EXERR_ON 1L /* Turn extended error code acquisition ON */
#define V_EXERR_OFF 2L /* Turn extended error code acquisition OFF (default) */
/* int-style arg for V_RETRYCTL */
#define V_RETRY_ON 1L /* Turn ECC and Retries ON (default) */
#define V_RETRY_OFF 2L /* Turn ECC and Retries OFF */
/* data structure returned by the Get Parameters ioctl: */
struct disk_parms {
char dp_type; /* Disk type (see below) */
unchar dp_heads; /* Number of heads */
ushort dp_cyls; /* Number of cylinders */
unchar dp_sectors; /* Number of sectors/track */
ushort dp_secsiz; /* Number of bytes/sector */
/* for this partition: */
ushort dp_ptag; /* Partition tag */
ushort dp_pflag; /* Partition flag */
union { /* value depends on partition # */
struct { /* returned for partition 0: */
uint dp0_secovhd : 8; /* Controller's per-sector overhead */
uint dp0_rsrvdcyls : 3; /* # of reserved cylinders from total */
uint dp0_intlv : 4; /* Interleave factor (0 if unknown) */
uint dp0_skew : 3; /* Sector skew factor (per head) */
/* Meaningful only if dp0_intlv == 1 */
/* If intlv == 1 & skew == 0, unknown */
uint dp0_ctlflags : 14; /* Controller-specific flags */
} dp0_ctl;
daddr_t dp1_pstartsec; /* returned for any other partition */
} dp_psense;
daddr_t dp_pnumsec; /* Number of sectors */
};
/* to make getting at things in the union (above) make some kind of sense */
#define dp_pstartsec dp_psense.dp1_pstartsec
#define dp_rsrvdcyls dp_psense.dp0_ctl.dp0_rsrvdcyls
#define dp_ctlflags dp_psense.dp0_ctl.dp0_ctlflags
#define dp_secovhd dp_psense.dp0_ctl.dp0_secovhd
#define dp_interleave dp_psense.dp0_ctl.dp0_intlv
#define dp_skew dp_psense.dp0_ctl.dp0_skew
/* Disk types for disk_parms.dp_type: */
#define DPT_WINI 1 /* Winchester disk */
#define DPT_FLOPPY 2 /* Floppy */
#define DPT_OTHER 3 /* Other type of disk */
#define DPT_NOTDISK 0 /* Not a disk device */
/* For partition 0 (which always starts at physical sector 0) various
* other information is encoded in the dp0_ctl structure which is used
* instead of dp_pstartsec. The value of dp0_rsrvdcyls should be
* SUBTRACTED from dp_cyls before any calculations are done.
* The flags bits are genericized below. */
/* Values for dp_ctlflags: */
#define DPCF_NOTRKFMT 0x02 /* Controller cannot format individual tracks
Only the entire drive can be formatted */
#define DPCF_BADMAP 0x04 /* Bad sector map is available from drive */
#define DPCF_CHGHEADS 0x08 /* Legal to change the number of heads */
#define DPCF_CHGSECTS 0x10 /* Legal to change the number of sectors/track */
#define DPCF_CHGCYLS 0x20 /* Legal to change the number of cylinders */
#define DPCF_CHGSECSIZ 0x40 /* Legal to change the sector size */
#define DPCF_NOALTS 0x80 /* No software alternates support */
#ifdef IOCTL_ERROR
/* Errors which may be retrieved with an ioctl when IOCTL_ERROR is used. */
/* Error message types */
#define FD_NOARGS 0 /* No arguments are applicable */
#define FD_TRKERR 1 /* Track number is applicable */
#define FD_BLKERR 2 /* Block number is applicable */
#define FD_ENOERROR 0 /* No error */
#define FD_ECMDTIMEOUT 1 /* command timeout */
#define FD_ESTATIMEOUT 2 /* status timeout */
#define FD_EBUSY 3 /* busy */
#define FD_EMISSDADDR 4 /* Missing data address mark */
#define FD_EBADCYL 5 /* Cylinder marked bad */
#define FD_EWRONGCYL 6 /* Seek error (wrong cylinder) */
#define FD_ECANTREAD 7 /* Uncorrectable data read */
#define FD_EBADSECTOR 8 /* Sector marked bad */
#define FD_EMISSHADDR 9 /* Missing header address mark */
#define FD_EWRITEPROT 10 /* Write protected */
#define FD_ESECNOTFND 11 /* Sector not found */
#define FD_EDATAOVRUN 12 /* Data overrun */
#define FD_EHCANTREAD 13 /* Header read error */
#define FD_ILLSECT 14 /* Illegal sector */
#define FD_EDOOROPEN 15 /* Door open */
typedef struct lasterr_t {
char number;
char type;
union {
int trk;
int blk;
} arg1;
} lasterr_t;
#endif /* IOCTL_ERROR */