Return to saio.h CVS log

Up to [CSRG BSD Unix] / 43BSD / sys / stand

Annotation of 43BSD/sys/stand/saio.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  *
                      6:  *     @(#)saio.h      7.1 (Berkeley) 6/5/86
                      7:  */
                      8: 
                      9: /*
                     10:  * Header file for standalone package
                     11:  */
                     12: 
                     13: /*
                     14:  * Io block: includes an
                     15:  * inode, cells for the use of seek, etc,
                     16:  * and a buffer.
                     17:  */
                     18: struct iob {
                     19:        int     i_flgs;         /* see F_ below */
                     20:        struct  inode i_ino;    /* inode, if file */
                     21:        int     i_unit;         /* pseudo device unit */
                     22:        daddr_t i_boff;         /* block offset on device */
                     23:        daddr_t i_cyloff;       /* cylinder offset on device */
                     24:        off_t   i_offset;       /* seek offset in file */
                     25:        daddr_t i_bn;           /* 1st block # of next read */
                     26:        char    *i_ma;          /* memory address of i/o buffer */
                     27:        int     i_cc;           /* character count of transfer */
                     28:        int     i_error;        /* error # return */
                     29:        int     i_errcnt;       /* error count for driver retries */
                     30:        int     i_errblk;       /* block # in error for error reporting */
                     31:        char    i_buf[MAXBSIZE];/* i/o buffer */
                     32:        union {
                     33:                struct fs ui_fs;        /* file system super block info */
                     34:                char dummy[SBSIZE];
                     35:        } i_un;
                     36: };
                     37: #define i_fs i_un.ui_fs
                     38: #define NULL 0
                     39: 
                     40: #define F_READ         0x1     /* file opened for reading */
                     41: #define F_WRITE                0x2     /* file opened for writing */
                     42: #define F_ALLOC                0x4     /* buffer allocated */
                     43: #define F_FILE         0x8     /* file instead of device */
                     44: #define F_NBSF         0x10    /* no bad sector forwarding */
                     45: #define F_SSI          0x40    /* set skip sector inhibit */
                     46: /* io types */
                     47: #define        F_RDDATA        0x0100  /* read data */
                     48: #define        F_WRDATA        0x0200  /* write data */
                     49: #define F_HDR          0x0400  /* include header on next i/o */
                     50: #define F_CHECK                0x0800  /* perform check of data read/write */
                     51: #define F_HCHECK       0x1000  /* perform check of header and data */
                     52: 
                     53: #define        F_TYPEMASK      0xff00
                     54: 
                     55: /*
                     56:  * Device switch.
                     57:  */
                     58: struct devsw {
                     59:        char    *dv_name;
                     60:        int     (*dv_strategy)();
                     61:        int     (*dv_open)();
                     62:        int     (*dv_close)();
                     63:        int     (*dv_ioctl)();
                     64: };
                     65: 
                     66: struct devsw devsw[];
                     67: 
                     68: /*
                     69:  * Drive description table.
                     70:  * Returned from SAIODEVDATA call.
                     71:  */
                     72: struct st {
                     73:        short   nsect;          /* # sectors/track */
                     74:        short   ntrak;          /* # tracks/surfaces/heads */
                     75:        short   nspc;           /* # sectors/cylinder */
                     76:        short   ncyl;           /* # cylinders */
                     77:        short   *off;           /* partition offset table (cylinders) */
                     78: };
                     79: 
                     80: /*
                     81:  * Request codes. Must be the same a F_XXX above
                     82:  */
                     83: #define        READ    1
                     84: #define        WRITE   2
                     85: 
                     86: #define        NBUFS   4
                     87: 
                     88: char   b[NBUFS][MAXBSIZE];
                     89: daddr_t        blknos[NBUFS];
                     90: 
                     91: #define        NFILES  4
                     92: struct iob iob[NFILES];
                     93: 
                     94: extern int errno;      /* just like unix */
                     95: 
                     96: /* error codes */
                     97: #define        EBADF   1       /* bad file descriptor */
                     98: #define        EOFFSET 2       /* relative seek not supported */
                     99: #define        EDEV    3       /* improper device specification on open */
                    100: #define        ENXIO   4       /* unknown device specified */
                    101: #define        EUNIT   5       /* improper unit specification */
                    102: #define        ESRCH   6       /* directory search for file failed */
                    103: #define        EIO     7       /* generic error */
                    104: #define        ECMD    10      /* undefined driver command */
                    105: #define        EBSE    11      /* bad sector error */
                    106: #define        EWCK    12      /* write check error */
                    107: #define        EECC    13      /* uncorrectable ecc error */
                    108: #define        EHER    14      /* hard error */
                    109: 
                    110: /* ioctl's -- for disks just now */
                    111: #define        SAIOHDR         (('d'<<8)|1)    /* next i/o includes header */
                    112: #define        SAIOCHECK       (('d'<<8)|2)    /* next i/o checks data */
                    113: #define        SAIOHCHECK      (('d'<<8)|3)    /* next i/o checks header & data */
                    114: #define        SAIONOBAD       (('d'<<8)|4)    /* inhibit bad sector forwarding */
                    115: #define        SAIODOBAD       (('d'<<8)|5)    /* enable bad sector forwarding */
                    116: #define        SAIOECCLIM      (('d'<<8)|6)    /* set limit to ecc correction, bits */
                    117: #define        SAIORETRIES     (('d'<<8)|7)    /* set retry count for unit */
                    118: #define        SAIODEVDATA     (('d'<<8)|8)    /* get device data */
                    119: #define        SAIOSSI         (('d'<<8)|9)    /* set skip sector inhibit */
                    120: #define        SAIONOSSI       (('d'<<8)|10)   /* inhibit skip sector handling */
                    121: #define        SAIOSSDEV       (('d'<<8)|11)   /* is device skip sector type? */
                    122: #define        SAIODEBUG       (('d'<<8)|12)   /* enable/disable debugging */
                    123: #define        SAIOGBADINFO    (('d'<<8)|13)   /* get bad-sector table */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.