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

/*-
 * Copyright (c) 1982, 1988, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * %sccs.include.proprietary.c%
 *
 *      @(#)ioctl.c     8.1 (Berkeley) %G%
 */

#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 */