The doshutdownhooks routine is deprecated. Use pmf_system_shutdown(9) instead.
The
doshutdownhooks() function invokes all shutdown hooks established using the
shutdownhook_establish(9) function. Shutdown hooks are called in reverse order, i.e., the shutdown hook established last will be called first.
This function is called from
cpu_reboot() with interrupts turned off. It is called immediately before the system is halted or rebooted, after file systems have been unmounted, after the clock has been updated, and after a system dump has been done (if necessary).