pack labels; various cleanups: open returns failure instead of stopping

[unix-history] / usr / src / sys / vax / stand / conf.c

/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
*      @(#)conf.c      7.2 (Berkeley) %G%
*/

#include "../machine/pte.h"

#include "../h/param.h"
#include "../h/inode.h"
#include "../h/fs.h"

#include "../vaxmba/mbareg.h"

#include "saio.h"

devread(io)
       register struct iob *io;
{
       int cc;

       io->i_flgs |= F_RDDATA;
       io->i_error = 0;
       cc = (*devsw[io->i_ino.i_dev].dv_strategy)(io, READ);
       io->i_flgs &= ~F_TYPEMASK;
       return (cc);
}

devwrite(io)
       register struct iob *io;
{
       int cc;

       io->i_flgs |= F_WRDATA;
       io->i_error = 0;
       cc = (*devsw[io->i_ino.i_dev].dv_strategy)(io, WRITE);
       io->i_flgs &= ~F_TYPEMASK;
       return (cc);
}

devopen(io)
       register struct iob *io;
{

       return (*devsw[io->i_ino.i_dev].dv_open)(io);
}

devclose(io)
       register struct iob *io;
{

       (*devsw[io->i_ino.i_dev].dv_close)(io);
}

devioctl(io, cmd, arg)
       register struct iob *io;
       int cmd;
       caddr_t arg;
{

       return ((*devsw[io->i_ino.i_dev].dv_ioctl)(io, cmd, arg));
}

/*ARGSUSED*/
nullsys(io)
       struct iob *io;
{

       ;
}

/*ARGSUSED*/
nodev(io)
       struct iob *io;
{

       errno = EBADF;
}

/*ARGSUSED*/
noioctl(io, cmd, arg)
       struct iob *io;
       int cmd;
       caddr_t arg;
{

       return (ECMD);
}

#if defined(VAX780) || defined(VAX750) || defined(VAX8600)
#define HP              "hp"
int     hpstrategy(), hpopen(), hpioctl();
#else
#define HP              ""
#define hpstrategy      nodev
#define hpopen          nodev
#define hpioctl         noioctl
#endif
int     upstrategy(), upopen(), upioctl();
int     rkstrategy(), rkopen(), rkioctl();
int     rastrategy(), raopen(), raioctl();
#if defined(VAX730)
#define RB              "rb"
int     idcstrategy(), idcopen(), idcioctl();
#else
#define RB              ""
#define idcstrategy     nodev
#define idcopen         nodev
#define idcioctl        noioctl
#endif
int     rlstrategy(), rlopen(), rlioctl();

#ifndef BOOT
#define TM              "tm"
int     tmstrategy(), tmopen(), tmclose();
#define TS              "ts"
int     tsstrategy(), tsopen(), tsclose();
#if defined(VAX780) || defined(VAX750) || defined(VAX8600)
#define HT              "ht"
int     htstrategy(), htopen(), htclose();
#define MT              "mt"
int     mtstrategy(), mtopen(), mtclose();

#else massbus vax
#define HT              ""
#define htstrategy      nodev
#define htopen          nodev
#define htclose         nodev
#define MT              ""
#define mtstrategy      nodev
#define mtopen          nodev
#define mtclose         nodev
#endif massbus vax

#define UT              ""
int     utstrategy(), utopen(), utclose();
#else BOOT
#define TM              ""
#define tmstrategy      nodev
#define tmopen          nodev
#define tmclose         nodev
#define TS              ""
#define tsstrategy      nodev
#define tsopen          nodev
#define tsclose         nodev
#define HT              ""
#define htstrategy      nodev
#define htopen          nodev
#define htclose         nodev
#define MT              ""
#define mtstrategy      nodev
#define mtopen          nodev
#define mtclose         nodev
#define UT              ""
#define utstrategy      nodev
#define utopen          nodev
#define utclose         nodev
#endif

struct devsw devsw[] = {
       { HP,   hpstrategy,     hpopen, nullsys,        hpioctl }, /* 0 = hp */
       { HT,   htstrategy,     htopen, htclose,        noioctl }, /* 1 = ht */
       { "up", upstrategy,     upopen, nullsys,        upioctl }, /* 2 = up */
       { "hk", rkstrategy,     rkopen, nullsys,        rkioctl }, /* 3 = hk */
       { "",   nodev,          nodev,  nullsys,        noioctl }, /* 4 = sw */
       { TM,   tmstrategy,     tmopen, tmclose,        noioctl }, /* 5 = tm */
       { TS,   tsstrategy,     tsopen, tsclose,        noioctl }, /* 6 = ts */
       { MT,   mtstrategy,     mtopen, mtclose,        noioctl }, /* 7 = mt */
       { "",   nodev,          nodev,  nullsys,        noioctl }, /* 8 = tu */
       { "ra", rastrategy,     raopen, nullsys,        raioctl }, /* 9 = ra */
       { UT,   utstrategy,     utopen, utclose,        noioctl }, /* 10 = ut */
       { RB,   idcstrategy,    idcopen,nullsys,        idcioctl },/* 11 = rb */
       { "",   nodev,          nodev,  nullsys,        noioctl }, /* 12 = uu */
       { "",   nodev,          nodev,  nullsys,        noioctl }, /* 13 = rx */
       { "rl", rlstrategy,     rlopen, nullsys,        rlioctl }, /* 14 = rl */
       { 0, 0, 0, 0, 0 },
};

int     ndevs = (sizeof(devsw) / sizeof(devsw[0]) - 1);