Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
CMX(4)		       FreeBSD Kernel Interfaces Manual			CMX(4)

NAME
     cmx -- Omnikey CardMan 4040 smartcard reader device driver

SYNOPSIS
     device cmx

DESCRIPTION
     The cmx driver provides support for the PCCARD based Omnikey CardMan 4040
     smartcard reader.	The driver provides a character	device special file
     based Chip/Smart Card Interface Devices (CCID) interface.	The driver
     implements	what the vendor	calls the Synchronous API onto the smartcard
     reader device.

     Reading and writing is synchronous, meaning that a	call to	write(2)
     directly corresponds to a complete	CCID command sent to the device, while
     the following read(2) will	return the complete answer from	the reader.
     There is no support for partial reads or writes.  There is	no upper limit
     on	CCID request or	response sizes,	but the	complete CCID request must be
     sent to the driver	in write(2) and	the complete CCID response must	fit
     into the buffer supplied to read(2).

     Non-blocking I/O, select(2) and poll(2) are supported and work as
     expected.	An open	file descriptor	will always be ready for writing, but
     only ready	for reading if the device indicates that it has	data avail-
     able.

FILES
     /dev/cmxn			 Character device special file.
     /usr/ports/security/openct	 OpenCT, a userspace smartcard daemon contain-
				 ing a CCID driver which directly supports cmx
				 devices.

COMPATIBILITY
     Userland smartcard	code written for the vendor's Linux drivers should
     work with the cmx driver without modification.

SEE ALSO
     pccard(4)

HISTORY
     The cmx driver first appeared in FreeBSD 7.1.

AUTHORS
     The cmx driver was	written	by Daniel Roethlisberger <daniel@roe.ch>,
     originally	based on the Linux driver v1.1.0 by Omnikey GmbH
     <www.omnikey.com>.	 Early testing and bug fixes by	Marcin Cieslak
     <saper@system.pl>.

BUGS
     The way the cmx driver talks to the CardMan 4040 is a bit rough.  Due to
     the complete lack of hardware documentation other than vendor drivers for
     other operating systems, the gory details of the device's I/O registers
     are not understood	very well.  There may be error conditions which	can
     only be solved by physically reinserting the reader.

FreeBSD	10.1			 July 7, 2007			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | FILES | COMPATIBILITY | SEE ALSO | HISTORY | AUTHORS | BUGS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=cmx&manpath=FreeBSD+9.2-RELEASE>

home | help