Le 05/08/2016 13:28, richard lucassen a écrit :
Anyone here running vdev? I just looked around a bit, but there seems to
be little activity:
https://git.devuan.org/unsystemd/vdev/activity
And anyone running good old MAKEDEV here?
R.
No news from Jude for almost one year :-(
I'm partial time reading documentation and sources and considering
rolling my own hotplugger, simpler than vdev - Jude has done an enormous
work and vdev is a complex software with hundreds of scripts, too
complex for me.
Reading uevents from netlink and parsing them is easy, but I'm not
sure to know what to do with these events. My first conclusion is that
when there is MODALIAS=something, then I just have to modprobe a
module's alias
when there is FIRMWARE=something, I just need to transfer the
firmware by some well defined API
otherwise it is more complicated because there are many different
cases (not all drivers provide the same uevent contents); but the job is
to create/delete a device file, and set owner/permissions and symlinks;
but some devices are neither char nor block (eg network devices) and I
don't know what to do with them.
For this reason, I'm tempted to clone mdev and only change the way
it is invoked. mdev is spawned for every uevent through the
/proc/sys/kernel/hotplug mechanism; instead I would prefer one
long-lasting daemon reading uevents from netlink. The design of mdev
makes full sense for embeded devices, but not for others.
I'm sure mdev is very well written, because it has been written,
maintained, and reviewed by highly skilled professionals. I have also
found a netlink reader at Skarnet, which is certainly written with great
care but does not seem very usefull since it just forwards the uevents
to standard output as they come; but It might be instructive to look if
it uses any special trick to read the netlink.
Any suggestions are welcome - there are still a lot of devices I
don't know anything about.
Didier
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