# I am the Watcher. I am your guide through this vast new twtiverse.
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prologic
twtxt.net
View Thread
🤔 Anyone know how things like mdev or udev work internally without reading the C source? 😅
prologic
twtxt.net
View Thread
🤔 Anyone know how things like mdev or udev work internally without reading the C source? 😅
prologic
twtxt.net
View Thread
I guess the bulk of what mdev really does is basically:

https://github.com/brgl/busybox/blob/abbf17abccbf832365d9acf1c280369ba7d5f8b2/util-linux/mdev.c#L743-L778

Which is to say mdev or udev:

- Scans /sys/class/xxx, looking for directories which have dev file (it is of the form "M:m\n")
- Uses the information in the dev file <major>:<minor> to create entries in /dev of the appropriate type (Character device, Block device, etc)
- Calls mknod() syscall to create the filesystem node

I _think_ I can do this fairly easily with either go-udev or libudev
prologic
twtxt.net
View Thread
I guess the bulk of what mdev really does is basically:

https://github.com/brgl/busybox/blob/abbf17abccbf832365d9acf1c280369ba7d5f8b2/util-linux/mdev.c#L743-L778

Which is to say mdev or udev:

- Scans /sys/class/xxx, looking for directories which have dev file (it is of the form "M:m\n")
- Uses the information in the dev file <major>:<minor> to create entries in /dev of the appropriate type (Character device, Block device, etc)
- Calls mknod() syscall to create the filesystem node

I _think_ I can do this fairly easily with either go-udev or libudev
prologic
twtxt.net
View Thread
I guess the bulk of what mdev really does is basically:

https://github.com/brgl/busybox/blob/abbf17abccbf832365d9acf1c280369ba7d5f8b2/util-linux/mdev.c#L743-L778

Which is to say mdev or udev:

- Scans /sys/class/xxx, looking for directories which have dev file (it is of the form "M:m\\n")
- Uses the information in the dev file <major>:<minor> to create entries in /dev of the appropriate type (Character device, Block device, etc)
- Calls mknod() syscall to create the filesystem node

I _think_ I can do this fairly easily with either go-udev or libudev