loader: make disable-device more rebust

Check the number of arguments and ensure that the passed-in device to
disable parses correctly.

Sponsored by:		Netflix

This commit is contained in:

Warner Losh

2025-09-28 11:58:31 -06:00

parent 55025f42f6

commit b7473a5d68

1 changed files with 9 additions and 1 deletions

									
										stand/lua/cli.lua
									
		+9
		-1
	
												View File
												
				@@ -235,9 +235,17 @@ cli["disable-device"] = function(...)

						return

					end

					if #argv > 1 then

						print("Too many arguments")

						print("usage error: disable-device device")

						return

					end

					d, u = string.match(argv[1], "(%w*%a)(%d+)")

					if d ~= nil then

					if d ~= nil and u ~= nil then

						loader.setenv("hint." .. d .. "." .. u .. ".disabled", "1")

					else

						print("Cannot parse " .. argv[1] .." into driver and unit number.")

					end

				end