Re: nfs in 2.0.33 ?

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sun, 12 Jul 1998 00:18:25 +0100 (BST)


> writes. What happens if I make a file ro while writing to it on a
> _local_ file system? I don't think that change should be seen by the
> process that opened the file rw.

File permissions apply at open normally. This is good, although it has
security aspects with device files and /proc that can be interesting if
mishandled.

NFS file permissions are applied at the time the request is made, normally,
but sometimes the handles may cache permissions dependant on the client/server
pair, and in some case those may randomly expire making the whole thing
fail in unpredictable ways

Alan

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