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Lennart Poettering 13ffc60749 pid1: add "soft-reboot" reboot method
This adds a new mechanism for rebooting, a form of "userspace reboot"
hereby dubbed "soft-reboot". It will stop all services as in a usual
shutdown, possibly transition into a new root fs and then issue a fresh
initial transaction. The kernel is not replaced.

File descriptors can be passed over, thus opening the door for leaving
certain resources around between such reboots.

Usecase: this is an extremely quick way to reset userspace fully when
updating image based systems, without going through a full
hardware/firmware/boot loader/kernel/initrd cycle. It minimizes "grayout time"
for OS updates. (In particular when combined with kernel live patching)
2023-06-02 16:49:38 +02:00
..
2022-07-20 13:15:37 +09:00
2022-02-23 06:54:54 +09:00