Currently we consider any framebuffer device as enough to have a
valid graphical session, but this might lead to many false postives
like in the case of framebuffer devices that have a linked drm card
which is still in the process of being added, or for vesa fb, and
so it doesn't ensure us that we can have a proper graphical session.
Since these days we normally don't consider anything without a DRM
card able to provide a full graphical session, let's not set this
at this level.
Drivers which can provide a graphical session with the sole fb are
still free to mark any device as `master-of-seat`
Fixes#10435
The uevent handling in udevd is not cpu hungry.
So, let's increase the default number of workers per cpu.
This decrease the number of queued uevents.
Without this commit (children_max is 16 on my laptop)
```
$ journalctl -b -u systemd-udevd.service | grep reached | wc -l
1544
```
With this commit (children_max is 30 on my laptop)
```
$ journalctl -b -u systemd-udevd.service | grep reached | wc -l
7
```
During boot process, many worker processes are forked and killed.
To decrease cycles of forking and killing worker, let's wait
3 seconds before killing workers. If new uevent or inotify event
comes within the delay, the killing porcess will be cancelled.
sysctl is disabled for /proc mounted from an user namespace thus entries like
/proc/sys/net/unix/max_dgram_qlen do not exist. In this case, skip the error
and do not try to change the default for the AF_UNIX datagram queue length.
In case networkd is restarted this prevents a removal of an already existing
route that would be configured using networkd. With the proposed changes the
route will be kept on the interface without removing. This happens only on
physical hosts or VMs since networkd handles interface configuration slightly
different in containers.
In case networkd is restarted this prevents a removal of an already existing IP
address that would be configured using networkd. With the proposed changes the
IP address will be kept on the interface without removing. This happens only on
physical hosts or VMs since networkd handles interface configuration slightly
different in containers.
It's cheap to get RDRAND and given that srand() is anyway not really
useful for trusted randomness let's use RDRAND for it, after all we have
all the hard work for that already in place.
The sd_device object always has syspath and sysname, but subsytem may not.
Also, it may take some costs to get subsystem.
So, let's drop subsystem from logs.
Marco Trevisan (Treviño)