* Copyright (c) 1990 The Regents of the University of California.
* This code is derived from software contributed to Berkeley by
* %sccs.include.noredist.c%
* @(#)saio.h 7.1 (Berkeley) %G%
* Header file for standalone package
* inode, cells for the use of seek, etc,
int i_flgs
; /* see F_ below */
struct inode i_ino
; /* inode, if file */
int i_unit
; /* pseudo device unit */
daddr_t i_boff
; /* block offset on device */
off_t i_offset
; /* seek offset in file */
daddr_t i_bn
; /* 1st block # of next read */
char *i_ma
; /* memory address of i/o buffer */
int i_cc
; /* character count of transfer */
int i_error
; /* error # return */
int i_errcnt
; /* error count for driver retries */
int i_errblk
; /* block # in error for error reporting */
struct fs i_fs
; /* file system super block info */
char i_buf
[MAXBSIZE
];/* i/o buffer */
* Macros to handle conversion from unit and partition to dev_t's.
#define minor_partition(s) (s & 7)
#define minor_unit(s) ((s>>3) & 31)
#define make_minor(u,p) ((u<<3) | p)
#define F_READ 0x1 /* file opened for reading */
#define F_WRITE 0x2 /* file opened for writing */
#define F_ALLOC 0x4 /* buffer allocated */
#define F_FILE 0x8 /* file instead of device */
#define F_NBSF 0x10 /* no bad sector forwarding */
#define F_ECCLM 0x20 /* limit # of bits in ecc correction */
#define F_SSI 0x40 /* set skip sector inhibit */
#define F_SEVRE 0x80 /* Severe burnin (no retries, no ECC) */
#define F_RDDATA 0x0100 /* read data */
#define F_WRDATA 0x0200 /* write data */
#define F_HDR 0x0400 /* include header on next i/o */
#define F_CHECK 0x0800 /* perform check of data read/write */
#define F_HCHECK 0x1000 /* perform check of header and data */
#define F_TYPEMASK 0xff00
* Drive description table.
* Returned from SAIODEVDATA call.
short nsect
; /* # sectors/track */
short ntrak
; /* # tracks/surfaces/heads */
short nspc
; /* # sectors/cylinder */
short ncyl
; /* # cylinders */
short *off
; /* partition offset table (cylinders) */
* Request codes. Must be the same a F_XXX above
extern int errno
; /* just like unix */
#define EBADF 1 /* bad file descriptor */
#define EOFFSET 2 /* relative seek not supported */
#define EDEV 3 /* improper device specification on open */
#define ENXIO 4 /* unknown device specified */
#define EUNIT 5 /* improper unit specification */
#define ESRCH 6 /* directory search for file failed */
#define EIO 7 /* generic error */
#define ECMD 10 /* undefined driver command */
#define EBSE 11 /* bad sector error */
#define EWCK 12 /* write check error */
#define EECC 13 /* uncorrectable ecc error */
#define EHER 14 /* hard error */
/* ioctl's -- for disks just now */
#define SAIOHDR (('d'<<8)|1) /* next i/o includes header */
#define SAIOCHECK (('d'<<8)|2) /* next i/o checks data */
#define SAIOHCHECK (('d'<<8)|3) /* next i/o checks header & data */
#define SAIONOBAD (('d'<<8)|4) /* inhibit bad sector forwarding */
#define SAIODOBAD (('d'<<8)|5) /* enable bad sector forwarding */
#define SAIOECCLIM (('d'<<8)|6) /* limit ecc correction to 5 bits */
#define SAIOECCUNL (('d'<<8)|7) /* use standard ecc procedures */
#define SAIODEVDATA (('d'<<8)|8) /* get device data */
#define SAIOSSI (('d'<<8)|9) /* set skip sector inhibit */
#define SAIONOSSI (('d'<<8)|10) /* inhibit skip sector handling */
#define SAIOSSDEV (('d'<<8)|11) /* is device skip sector type? */
#define SAIODEBUG (('d'<<8)|12) /* enable/disable debugging */
#define SAIOSEVRE (('d'<<8)|13) /* severe burnin, no ECC, no retries */
#define SAIONSEVRE (('d'<<8)|14) /* clear severe burnin */