Patch for rc.d/devd on FreeBSD 9-current
des at des.no
Mon Jun 28 14:37:49 UTC 2010
"M. Warner Losh" <imp at bsdimp.com> writes:
> Dag-Erling Smørgrav <des at des.no> writes:
> > "M. Warner Losh" <imp at bsdimp.com> writes:
> > > Maybe the real problem is that devd locks the file, then dies. The
> > > file remains locked, so the flopen is failing with EWOULDBLOCK.
> > The lock is released when the process that holds it terminates.
> So which process is that? devd took it out, and is subsequently
> killed. When it restarts, it can't take out the lock.
What does fstat say about the pid file?
> The same code works perfectly in 8.0-stable from April.
> The conclusion, I believe, is that somebody broke locking in
Before I wrote one of my earlier replies, I traced through the code
paths that lead to a lock being released, and everything looks fine and
dandy. Besides, if someone had, as you suggest, broken locking in
current, there would be a lot more noise about it on the lists.
Dag-Erling Smørgrav - des at des.no
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