code: plan9front

Download patch

ref: ef647a54c006a2a748463c81132c22ecb01d2dac
parent: 39cf6b34e34e02aa9bbec28295459769175681ad
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Thu Apr 16 12:07:36 EDT 2015

kernel: cannot interrupt segmentio commands

once we submit a command to segmentio process, we have to wait
for it to complete even if we got interrupted.

--- a/sys/src/9/port/segment.c

+++ b/sys/src/9/port/segment.c

@@ -799,8 +799,11 @@

 {

 	sio->err = nil;

 	sio->cmd = cmd;

+	while(waserror())

+		;

 	wakeup(&sio->cmdwait);

 	sleep(&sio->replywait, cmddone, sio);

+	poperror();

 	if(sio->err != nil)

 		error(sio->err);

 }