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nusb: change usbevent format, put nusbrc in bootfs

--- a/sys/src/9/boot/bootrc

+++ b/sys/src/9/boot/bootrc

@@ -152,10 +152,7 @@

 	aux/kbdfs -s cons $a

 }

-if(test -e '#u' && test -x /bin/usb/usbd){

-	bind -a '#u' /dev

-	usb/usbd

-}

+nusbrc

 # bind in an ip interface

 for(i in I l^(0 1 2 3))

--- /dev/null

+++ b/sys/src/9/boot/nusbrc

@@ -1,0 +1,18 @@

+#!/bin/rc

+

+if(! bind -a '#u' /dev)

+	exit

+if(! nusb/usbd)

+	exit

+

+fn dev {

+	switch($4){

+	case *03

+		nusb/kb $1

+	case *08

+		nusb/disk $1

+	}

+}

+rc </dev/usbevent &

+

+bind -a '#σ/usb' /dev

--- a/sys/src/9/port/bootfs.proto

+++ b/sys/src/9/port/bootfs.proto

@@ -30,8 +30,10 @@

 		srv

 		test

 		unmount

-		usb

+		nusb

 			usbd

+			disk

+			kb

 		xd

 rc

 	lib

@@ -41,5 +43,6 @@

 	bin

 		fstype

 		diskparts

+		nusbrc 555 sys sys ../boot/nusbrc

 		bootrc 555 sys sys ../boot/bootrc

 tmp

--- a/sys/src/cmd/nusb/usbd/usbd.c

+++ b/sys/src/cmd/nusb/usbd/usbd.c

@@ -208,8 +208,7 @@

 	Usbdev *u;

 	u = d->usb;

-	return smprint("in id %d vid 0x%.4x did 0x%.4x csp 0x%.8lx\n",

-		d->id, u->vid, u->did, u->csp);

+	return smprint("dev %d %.4x %.4x %.8lx\n", d->id, u->vid, u->did, u->csp);

 }

 static void

@@ -333,8 +332,10 @@

 {

 	int fd, i, nd;

 	Dir *d;

-	

-	argc--; argv++;

+

+	ARGBEGIN {

+	} ARGEND;

+

 	initevent();

 	rfork(RFNOTEG);

 	switch(rfork(RFPROC|RFMEM)){

@@ -358,4 +359,5 @@

 			rendezvous(work, strdup(argv[i]));

 	rendezvous(work, nil);

 	postsharesrv(&usbdsrv, nil, "usb", "usbd", "b");

+	exits(nil);

 }