git: b7473a5d68b8 - main - loader: make disable-device more rebust

The branch main has been updated by imp:

URL: https://cgit.FreeBSD.org/src/commit/?id=b7473a5d68b8ade1ce6c6c08965fe284cc70bd75

commit b7473a5d68b8ade1ce6c6c08965fe284cc70bd75
Author:     Warner Losh <imp@FreeBSD.org>
AuthorDate: 2025-09-28 17:58:31 +0000
Commit:     Warner Losh <imp@FreeBSD.org>
CommitDate: 2025-09-29 01:45:01 +0000

    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
---
 stand/lua/cli.lua | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/stand/lua/cli.lua b/stand/lua/cli.lua
index 596e55a8d1d8..dda8c3da4c89 100644
--- a/stand/lua/cli.lua
+++ b/stand/lua/cli.lua
@@ -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