Messages in this thread | | | Date | Fri, 21 Jan 2005 11:23:17 -0500 | From | "Aaron D. Ball" <> | Subject | Re: knfsd and append-only attribute: "operation not permitted" |
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Trond Myklebust wrote:
>fr den 21.01.2005 Klokka 17:44 (+0300) skreiv Vladimir Saveliev: > > >> fs/nfsd/vfs.c:nfsd_open() refuses to open append only files. > > >Append-only is an unsupported concept in the all existing revisions of >the NFS protocol. In fact, NFS has no support for append writes at all: >they have to be emulated by the clients. > > OK, but that certainly shouldn't preclude read access. The way it is now, you can't even list append-only directories. It seems like this check should treat append-only files as read-only, only failing to open them if write access is requested, rather than failing all the time like it does now.
In this particular case, I'm not using append-only files, but rather using immutable files and append-only directories to create an archival space where things can be added but not changed. Even if the protocol can't deal with append-only regular files, isn't it possible to allow mkdir but not rmdir?
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