Date: Sun, 24 May 2009 12:32:03 +0000 (UTC) From: Ed Schouten <ed@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern tty.c Message-ID: <200905241232.n4OCW7qN029656@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
ed 2009-05-24 12:32:03 UTC
FreeBSD src repository
Modified files:
sys/kern tty.c
Log:
SVN rev 192682 on 2009-05-24 12:32:03Z by ed
Block when initially opening a TTY multiple times.
In the original MPSAFE TTY code, I changed the behaviour by returning
EBUSY. I thought this made more sense, because it's basically a race to
see who gets the TTY first.
It turns out this is not a good change, because it also causes EBUSY to
be returned when another process is closing the TTY. This can happen
during startup, when /etc/rc (or one of its children) is still busy
draining its data and /sbin/init is attempting to open the TTY to spawn
a getty.
Reported by: bz
Tested by: bz
Revision Changes Path
1.315 +11 -5 src/sys/kern/tty.c
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200905241232.n4OCW7qN029656>