fw_update(8) now checks dmesg(8) output in addition to dmesg.boot

Contributed by rueda on 2025-12-29 from the firmly-present dept.

Thanks to a commit by Andrew Hewus Fresh (afresh1@), fw_update(8) now checks the output of [runtime] dmesg(8) in addition to the [boot-time] file /var/run/dmesg.boot. The commit message explains the rationale:

CVSROOT:	/cvs
Module name:	src
Changes by:	afresh1@cvs.openbsd.org	2025/12/26 11:19:46

Modified files:
	usr.sbin/fw_update: fw_update.sh fw_update.8 

Log message:
Scan both dmesg.boot and dmesg(8) output for devices

This allows us to detect newly plugged in devices that need firmware
added while still making sure to detect devices available at boot
even if dmesg rolls over with noisy messages.

fixes and ok kn@
I think this is good deraadt@

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