Could it used as mdevd replacement?

pilebones / go-udev

Simple udev implementation in Golang

GNU General Public License v3.0

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Could it used as mdevd replacement? #15

Closed pwFoo closed 6 years ago

pwFoo commented 6 years ago

I use mdevd / mdevd-coldplug for coldplug and hotplug of devices.

Is it possible with go-udev too?

pilebones commented 6 years ago

Hello,

Thanks for your interest, I think it could be possible to replace mdev by go-udev depending on the complexity of your use case. Otherwise you should probably implement your use case using the API provided by go-udev.

go-udev allow to:

Scan existing devices in /sys as mdevd-coldplug but don't tell to the kernel to generate an event, it build a list of devices with metadata objects to manage them.
Listen to the kernel channel related to udev events and build related objects to manage them.
Provide an API to implement another complex use cases.

How do you use mdevd ?

pwFoo commented 6 years ago

I built a custom initrd based on busybox with a driver detection loop (bash command) and mdevd for device coldplug / hotplug to handle kernel modules at boot and run time to handle hdd, usb sticks, ...

At the moment I play with u-root (go based) and would need a way to load all the needed kernel modules during boot and os run time (usb hotplug events, loading needed kernel modules).

I'm new with golang. So I don't know which solutions available or could fit my needs and found your go-udev as possible way.

pilebones commented 6 years ago

Initially, go-udev has been developed from scratch to auto-detect at runtime a GPS device already plugged or when hot-plug or then when unplug; for this project still in development: https://github.com/pilebones/go-gpsd

I think it is not so different than your use case, you could inspire you by this implementation: https://github.com/pilebones/go-gpsd/blob/feature/deconnect-device/autodetect.go#L43

It is a little bit treaky if you are new with Go but not impossible :) I hope it could help you.

Anyway, feel free to ask another questions, I will do my best to react quickly and effectively.

pwFoo commented 6 years ago

Go is really interesting, but maybe an easier task would be better to start with it g I have to take a deeper look how it could be done and what should work for my case.

Thank you very much for answering my questions and helping here!

pilebones commented 6 years ago

To start with it "g" ...? Missing ending ?

Indeed, feel free to ask another questions if go-udev could answer to your use-case, your are welcome and good luck for your research.

At this time, I close this issue.