MirOS Manual: bio(4)

BIO(4)                     BSD Programmer's Manual                      BIO(4)

NAME

     bio - ioctl tunnel pseudo-device

SYNOPSIS

     pseudo-device bio [count]
     [count]

DESCRIPTION

     The bio driver provides userland applications ioctl access to devices
     otherwise not found as /dev nodes. The /dev/bio device node operates by
     delegating ioctl(2) calls to a requested device driver. Only drivers
     which have registered with the bio device can be accessed via this inter-
     face.

     If count is given in the specification, and is greater than 0, a maximum
     of one bio device is created.

     The following ioctl(2) calls apply to the bio device:

     BIOCLOCATE  Locate a named device and give back a cookie to the applica-
                 tion for subsequent ioctl calls. The cookie is used to tunnel
                 further ioctls to the right device.

FILES

     /dev/bio  ioctl tunnel device

HISTORY

     The bio driver appeared in OpenBSD 3.2.

MirOS BSD #10-current            June 8, 2002                                1

Generated on 2008-12-26 21:13:42 by $MirOS: src/scripts/roff2htm,v 1.57 2008/12/09 22:04:51 tg Exp $

These manual pages are copyrighted by their respective writers; their source is available at our CVSweb, AnonCVS, and other mirrors. The rest is Copyright © 2002-2008 The MirOS Project, Germany.
This product includes material provided by Thorsten Glaser.