Request specific parents identified by subsystem and don't rely on
a predefined sequence.
Also let the devpath be longer than 72 chars, tsss ...
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
We never used any of the libsysfs convenience features. Here we replace
it completely with 300 lines of code, which are much simpler and a bit
faster cause udev(d) does not open any syfs file for a simple event which
does not need any parent device information.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Most of the issues are fixed with the kernel we depend on, for the
remaing ones see the RELEASE-NOTES for a special rule to add.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
I've found a /dev/video4linux node and just realized, that libsysfs
searches all subdirs for an attribute name.
So it found /class/video4linux/video0/dev for the videodev class
creation event /class/video4linux and created a node.
Just ignore the SUBSYSTEM="class" events now.
> I just put const's at some places. It cut down data segments, but
> increased code size.
> Overall still smaller:
>
> -rwxr-xr-x 1 user users 50420 Nov 19 10:53 ../udev-046/udev
> -rwxr-xr-x 1 user users 49556 Nov 19 10:53 udev
> text data bss dec hex filename
> 47245 968 22480 70693 11425 ../udev-046/udev
> 48089 104 22064 70257 11271 udev
>
> Also, the instance of utsname in udev_lib.c is used only once.
This patch exposes the wait_for_sysfs functions to all possible users,
so we need to maintain only one list of exceptions. The last list is
hereby removed from udev.c.
Kay Sievers