4.1cBSD/a/sys/stand/confra.c

/*	confra.c	4.4	83/02/16	*/

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

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

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

	return (ECMD);
}

int	nullsys(), nullioctl();
int	rastrategy(), raopen(), raioctl();

struct devsw devsw[] = {
	{ "ra",	rastrategy,	raopen,		nullsys,	raioctl },
	{ 0, 0, 0, 0, 0 }
};