We're happy to announce release 1.10 of FUSD, the Linux Framework for
User-Space Devices.
If you have a Linux 2.4 kernel running devfs, FUSD is a combination of
Linux kernel module and userspace library that lets you write
userspace programs that can act as character device drivers for files
under /dev. Your program reigsters the device with the kernel module;
then, it proxies system calls (e.g., open(), read()...) to your
program. Your userspace program can respond to these system calls as
a kernel module would. Strict error checking at the user/kernel
boundary prevents such userspace drivers from corrupting each other,
the kernel, or even the processes using the devices they manage.
v1.10 has a number of enhancements, including:
-- Now safe for SMP and preemptible kernels
-- Includes both C and Python bindings
-- /dev/fusd/status device shows a summary of devices registered and
in use
-- Updated documentation and various other bugfixes
Unfortunately, FUSD does NOT work under later 2.5 or any 2.6 kernels.
The recent changes to the devfs API break FUSD in a way that we
haven't yet looked into fixing.
Regards,
Jeremy
Oops, someone pointed out that I forgot the URL in my announcement.
For those who don't want to use Google :-), it is:
http://www.circlemud.org/~jelson/software/fusd
Best,
Jeremy
Jeremy Elson writes:
>We're happy to announce release 1.10 of FUSD, the Linux Framework for
>User-Space Devices.
>
>If you have a Linux 2.4 kernel running devfs, FUSD is a combination of
>Linux kernel module and userspace library that lets you write
>userspace programs that can act as character device drivers for files
>under /dev. Your program reigsters the device with the kernel module;
>then, it proxies system calls (e.g., open(), read()...) to your
>program. Your userspace program can respond to these system calls as
>a kernel module would. Strict error checking at the user/kernel
>boundary prevents such userspace drivers from corrupting each other,
>the kernel, or even the processes using the devices they manage.
>
>v1.10 has a number of enhancements, including:
> -- Now safe for SMP and preemptible kernels
>
> -- Includes both C and Python bindings
>
> -- /dev/fusd/status device shows a summary of devices registered and
> in use
>
> -- Updated documentation and various other bugfixes
>
>
>Unfortunately, FUSD does NOT work under later 2.5 or any 2.6 kernels.
>The recent changes to the devfs API break FUSD in a way that we
>haven't yet looked into fixing.
>
>Regards,
>Jeremy