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Length: 4215 (0x1077)
Types: TextFile
Notes: UNIX file
Names: »ivlab.h«
└─⟦a6ab2eb36⟧ Bits:30004042/kconfig3.imd SW95705I 386/ix Multi-user Release 1.2
└─⟦a6ab2eb36⟧ UNIX Filesystem
└─⟦this⟧ »kc/new/usr/include/sys/ivlab.h«
/* Copyright (c) 1984 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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */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. */
#ident "@(#)ivlab.h 1.2"
/*
* iRMX 86 Volume Label Definitions for UNIX.
*
* This is used to keep a UNIX Volume close enough to RMX 86 to
* allow use of various RMX 86 technology (ie, PROM bootstrap drivers).
*
*/
union v_part {
struct {
ushort v_part_st;
ushort v_part_sz;
ushort v_part_sid;
} vp_std; /* standard partition def */
struct {
ushort v_sanity_l; /* sanity to verify label (low half) */
ushort v_sanity_h; /* high half of sanity */
ushort v_version; /* label version number */
} vp_sanity; /* used for v_prt[1] */
struct {
ushort v_pd_sect_l; /* low half of absolute sector number
of beginning of pdinfo structure */
ushort v_pd_sect_h; /* high half of sector number */
ushort v_pd_len; /* # of bytes in pdinfo block */
} vp_pdinfo; /* used for v_prt[2] */
};
#define VP_SANITY(ptr) ((((union v_part *)(ptr))->vp_sanity.v_sanity_h << 16)\
| (((union v_part *)(ptr))->vp_sanity.v_sanity_l))
#define VP_PD_SECT(ptr) ((((union v_part *)(ptr))->vp_pdinfo.v_pd_sect_h << 16)\
| (((union v_part *)(ptr))->vp_pdinfo.v_pd_sect_l))
#define SET_VP_SANITY(ptr,val) ((union v_part *)(ptr))->vp_sanity.v_sanity_h\
= (ulong)val >> 16;\
((union v_part *)(ptr))->vp_sanity.v_sanity_l\
= val & 0xffff;
#define SET_VP_PD_SECT(ptr,val) ((union v_part *)(ptr))->vp_pdinfo.v_pd_sect_h\
= (ulong)val >> 16;\
((union v_part *)(ptr))->vp_pdinfo.v_pd_sect_l\
= val &0xffff;
struct ivlab {
char v_name[10]; /* volume name, blank padded */
char v_flags; /* flags byte -- see below */
char v_fdriver; /* file-driver number */
ushort v_gran; /* volume-gran (bytes) */
ushort v_size_l; /* size (bytes) of volume (low) */
ushort v_size_h; /* size (bytes) of volume (low) */
ushort v_maxfnode; /* max fnode # (0 on UNIX) */
ushort v_stfnode_l; /* start of fnodes (2 in UNIX)(low)*/
ushort v_stfnode_h; /* start of fnodes (2 in UNIX)(high)*/
ushort v_szfnode; /* size of fnode (32 in UNIX) */
ushort v_rfnode; /* root fnode (2 in UNIX) */
ushort v_devgran; /* sector size (bytes) */
ushort v_intl; /* interleave; 0 ==> unknown */
ushort v_trskew; /* track skew; 0 ==> none */
ushort v_sysid; /* OS id for OS that formatted vol. */
char v_sysname[12]; /* OS name (as above), blank filled */
char v_dspecial[8]; /* device-special info (a drtab entry) */
char v_reserved[22]; /* reserved for future use */
ushort v_fsdelta; /* start of root filesystem on boot */
long v_fsofset; /* start of ram filesystem on boot */
long v_ramfsloc; /* location of start of ram disk. */
long v_ramfssiz; /* size of ram file system */
ushort v_filler;
union v_part v_prt[4]; /* four partitions */
char v_partno[10]; /* part number for IQC */
};
#define VLAB_SECT 0L /* sector # of volume label on disk */
#define VLAB_START 384 /* byte # of volume label */
#define VLAB_FLOFF 10 /* flags field offset (for boot) */
#define VLAB_FSDOFF 78 /* fsdelta field offset (for boot ) */
#define VLAB_VALID 0xdeadfeeb /* magic number for label sanity */
#define VP_SANITY_IDX 1 /* v_prt index for sanity stuff */
#define VP_PDINFO_IDX 2 /* v_prt index for pdinfo stuff */
/*
* Flags byte definitions.
*/
#define VF_AUTO 0x01 /* 1 ==> byte is valid */
#define VF_DENSITY 0x02 /* 0 = FM, 1 = MFM */
#define VF_SIDES 0x04 /* 1 = double-sided */
#define VF_MINI 0x08 /* 0 = 8", 1 = 5.25" */
#define VF_NOT_FLOPPY 0x10 /* 0 = flop track 0 is 128 SD, 1 = not flop */
/*
* Misc. other defintions.
*/
#define UNIX_FD 6 /* UNIX "file-driver" number; */
/* just to be different from RMX86 */
#define UNIX_SID 0x0040 /* UNIX "system-id" (as above) */