Commit Graph

14 Commits

Author SHA1 Message Date
cat cd0beeaf8e internal/uevent: optionally pass UUID during coldboot
This enables rejection of non-coldboot synthetic events.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-04-06 12:42:47 +09:00
cat 91a2d4d6e1 internal/uevent: integrate error handling in event loop
There are many subtleties when recovering from errors in the event loop, and coldboot requires internals to drain the receive buffer as synthetic uevents are being arranged.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-31 00:10:14 +09:00
cat f03c0fb249 internal/uevent: synthetic events for coldboot
This causes the kernel to regenerate events that happened before earlyinit started.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-30 23:01:08 +09:00
cat b5592633f5 internal/uevent: separate recvmsg helper
This enables messages to be received separately.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-30 02:53:26 +09:00
cat 584e302168 internal/netlink: set receive buffer size
This is done by both systemd sd-device and AOSP ueventd to improve robustness. Rosa OS will still handle ENOBUFS via coldboot but a big buffer should mitigate this as well.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-30 02:14:47 +09:00
cat 141958656f internal/uevent: handle state divergence
This requires the caller to arrange for a coldboot to happen, some time after this error is encountered, and to resume event processing.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-30 01:50:09 +09:00
cat 648079f42c internal/netlink: switch to recvmsg/sendmsg
These are more flexible than recvfrom/sendto.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-29 23:36:00 +09:00
cat ea014d6af2 internal/uevent: consume kernel-originated events
These are not possible to cover outside integration vm. Extreme care is required when dealing with this method, so keep it simple.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-28 15:39:16 +09:00
cat 1b48484c16 internal/uevent: exclusive socket access
This is a much simplified mutex, since blocking is not required.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-28 01:01:06 +09:00
cat 713bff3eb0 internal/uevent: decode uevent messages
The wire format and behaviour is entirely undocumented. This is implemented by reading lib/kobject_uevent.c, with testdata collected from the internal/rosa kernel.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-28 00:49:34 +09:00
cat 30f459e690 internal/uevent: nontrivial errors
These errors are best represented as JSON.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-28 00:07:56 +09:00
cat 8766fddcb3 internal/uevent: recoverable errors
This runs in the Rosa OS init, so recover as much as possible, as otherwise it is likely to require a full system reboot to resume event processing. The caller is responsible for reporting the error.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-27 22:58:16 +09:00
cat 2745602be3 internal/uevent: wrap netlink socket
Unfortunately these messages do not have the same format as rtnetlink.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-27 22:46:18 +09:00
cat ee22847dde internal/uevent: kobject_action lookup
This is encoded as part of kobject uevent message headers.

Signed-off-by: Ophestra <cat@gensokyo.uk>
2026-03-27 22:39:43 +09:00