Path: utzoo!attcan!uunet!bu.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!rice!rice!sun-spots-request
From: tmm33@leah.albany.edu (Terry McCoy)
Newsgroups: comp.sys.sun
Subject: record locking with fcntl
Keywords: Miscellaneous
Message-ID: <1990Oct7.231002.3441@rice.edu>
Date: 7 Oct 90 21:30:00 GMT
Sender: sun-spots-request@rice.edu
Organization: Sun-Spots
Lines: 12
Approved: Sun-Spots@rice.edu
Originator: spots@walhalla.rice.edu
X-Sun-Spots-Digest: Volume 9, Issue 338, message 16

I have written a function that uses fcntl to lock a segment of a file.
The function works when the file is located on the local filesystem.  But
when I attemp to use this function to perform locking on a file that is
located on a NFS mounted filesystem the program will crash with a panic
within the kernel "Memory address alignment".  I did use the F_RSETLK
command when trying to lock the file on the NFS filesystem as opposed to
F_SETLK on the file that was on a local filesystem.  Any ideas why the
lock on the NFS filesystem will cause the panic and the lock on the local
filesystem does not.

Terry McCoy
internet:    tmm33@leah.albany.edu