Author: grehan
Date: Fri Mar 7 06:23:37 2014
New Revision: 262884
URL: http://svnweb.freebsd.org/changeset/base/262884
Log:
Open the uart emulation's backing tty in non-blocking mode.
This fixes the issue of bhyve appearing to halt when using
nmdm ports for the console, until a connection is made to
the other end.
bhyveload already does this.
Reported by: Many.
MFC after: 3 weeks.
Modified:
head/usr.sbin/bhyve/uart_emul.c
Modified: head/usr.sbin/bhyve/uart_emul.c
==============================================================================
--- head/usr.sbin/bhyve/uart_emul.c Fri Mar 7 02:41:45 2014
(r262883)
+++ head/usr.sbin/bhyve/uart_emul.c Fri Mar 7 06:23:37 2014
(r262884)
@@ -585,7 +585,7 @@ uart_tty_backend(struct uart_softc *sc,
retval = -1;
- fd = open(opts, O_RDWR);
+ fd = open(opts, O_RDWR | O_NONBLOCK);
if (fd > 0 && isatty(fd)) {
sc->tty.fd = fd;
sc->tty.opened = true;
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