Date: Wed, 26 Mar 2003 11:21:34 -0800 (PST) From: Robert Watson <rwatson@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/nfsclient nfs_lock.c Message-ID: <200303261921.h2QJLYhs039438@repoman.freebsd.org>
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rwatson 2003/03/26 11:21:34 PST
FreeBSD src repository
Modified files:
sys/nfsclient nfs_lock.c
Log:
Add O_NONBLOCK to the vn_open_cred() flags for NFS client locking when
opening the POSIX fifo; convert ENXIO error returns to EOPNOTSUPP.
This improves handling of the case where the /var/run/lock fifo exists
but there is no listener: we immediately return EOPNOTSUPP rather
than blocking until a listener turns up. This could occur during a
diskless boot before rpc.lockd is loaded, or if the lock file persists
across a reboot following the disabling of rpc.lockd. This may have
suddenly started to occur due to fifo blocking fixes--previously it
looks like attempts to read on a fifo with no listener would time out
due to insufficient resources.
Reviewed by: alfred
Revision Changes Path
1.33 +13 -3 src/sys/nfsclient/nfs_lock.c
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