New device wiring option

[Poul-Henning Kamp]

--------
Bjoern A. Zeeb writes:

> Probably USB as well?  Having 10 serial consoles on USB Hubs and unplugging
> one “early” one it is easy to end up re-numbering the entire chain after a
> reboot.  Not sure if this really fits into your problem/implementation domain.

My solution to that specific problem is the following entry in /etc/devd:

	attach 500 {
		match "device-name"     "uftdi[0-9]*";
		match "vendor"          "0x0403";
		match "product"         "(0x6001|0x6015)";
		action "ln -fs /dev/cua$ttyname /dev/cua_$sernum";
	};
	
	notify 500 {
		match "system"          "USB";
		match "subsystem"       "DEVICE";
		match "type"            "DETACH";
		match "vendor"          "0x0403";
		match "product"         "(0x6001|0x6015)";
		action "rm -f /dev/cua_$sernum";
	};

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.