[Fwd: Serious problem with mount(8)]

[Dag-Erling Smørgrav]

Joe Marcus Clarke <marcus at FreeBSD.org> writes:
> I really don't know why I didn't notice this before, but when mount was
> converted to use the pidfile(3) API three months ago, the behavior of
> mount(8) changed with regard to restarting mountd.  A pidfile client
> cannot use pidfile_open(3) as this will truncate the pidfile.  The
> result is that mount reads in a PID of 0, and when it tries to send a
> SIGHUP to this PID, it kills itself.  Consequently, this is breaking the
> ports Tinderbox.
>
> I suppose we could revert to the previous behavior, but use flopen() to
> test if the file is actually locked.  Maybe something like this:
>
> http://www.marcuscom.com/downloads/mount.c.diff

Better yet, extend the pidfile API with a function which reads the
contents of a PID file and also checks whether it's locked.

DES
-- 
Dag-Erling Smørgrav - des at des.no