4.4BSD/usr/src/sys/stand.att/ioctl.c

/*-
 * Copyright (c) 1982, 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This module is believed to contain source code proprietary to AT&T.
 * Use and redistribution is subject to the Berkeley Software License
 * Agreement and your Software Agreement with AT&T (Western Electric).
 *
 *	@(#)ioctl.c	8.1 (Berkeley) 6/11/93
 */

#include <sys/param.h>
#include <stand.att/saio.h>

#ifndef SMALL
ioctl(fdesc, cmd, arg)
	int fdesc, cmd;
	char *arg;
{
	register struct iob *file;
	int error = 0;

	fdesc -= 3;
	if (fdesc < 0 || fdesc >= SOPEN_MAX ||
	    ((file = &iob[fdesc])->i_flgs&F_ALLOC) == 0) {
		errno = EBADF;
		return (-1);
	}
	switch (cmd) {

	case SAIOHDR:
		file->i_flgs |= F_HDR;
		break;

	case SAIOCHECK:
		file->i_flgs |= F_CHECK;
		break;

	case SAIOHCHECK:
		file->i_flgs |= F_HCHECK;
		break;

	case SAIONOBAD:
		file->i_flgs |= F_NBSF;
		break;

	case SAIODOBAD:
		file->i_flgs &= ~F_NBSF;
		break;

	default:
		error = devioctl(file, cmd, arg);
		break;
	}
	if (error < 0)
		errno = file->i_error;
	return (error);
}
#endif /* SMALL */