shithub: rd

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readdevmouse: improve diagnostics (messy under lola)

--- a/rd.c

+++ b/rd.c

@@ -243,13 +243,14 @@

 {

 	Mouse m;

 	char ev[1+4*12];

+	int n;

 	if((mfd = open("/dev/mouse", ORDWR)) < 0)

 		sysfatal("open /dev/mouse: %r");

 	for(;;){

-		if(read(mfd, ev, sizeof ev) != sizeof ev)

-			sysfatal("mouse eof");

+		if((n = read(mfd, ev, sizeof ev)) != sizeof ev)

+			sysfatal("mouse read: %d != %d", n, (int)sizeof ev);

 		if(*ev == 'm'){

 			m.xy.x = atoi(ev+1+0*12);

 			m.xy.y = atoi(ev+1+1*12);

-- 

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