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Open the uart emulation's backing tty in non-blocking mode.

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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.
This commit is contained in:
Peter Grehan 2014-03-07 06:23:37 +00:00
parent fb7aab9932
commit f4959d3537
1 changed files with 1 additions and 1 deletions
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2
usr.sbin/bhyve/uart_emul.c
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@ -585,7 +585,7 @@ uart_tty_backend(struct uart_softc *sc, const char *opts)
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;