[OpenAFS] Re: directories in afs have "owners"?
Derrick J Brashear
Fri, 23 Dec 2005 09:23:32 -0500 (EST)
On Thu, 22 Dec 2005, Adam Megacz wrote:
> Derrick J Brashear <firstname.lastname@example.org> writes:
>> And it's directories, not files, for which the implicit ownership
>> being talked about comes into play.
> Okay. Would it be correct to say that the ownership of non-directory
> files matters only for the "extra permission check" ("u+rw" bits are
> checked in addition to AFS ACLs)? Or are there other situations where
> this information gets used?
mode bits/unix owner are only ever checked by the client itself. Server
doesn't care. (modulo directories as mentioned)
> Does the "group" of a directory (or file) in AFS space have any
> Also, since PTS userids don't have to match local UNIX userids, do UNIX
> applications get confused when they create a file and fstat()->uid !=
> getuid()? Or just "no more confused than usual when dealing with AFS
> file semantics" (ie only very rarely)?
Most sites do match uid to pts id, but, most applications don't stat()
what they create anyway.
> Lastly, is there any reason for files to have ownership other than
> preventing dumb users from clobbering their own home directory's
> permissions? It seems like there would have been some other way to
> accomplish this with a smaller "semantic footprint"...
In AFS, you mean? Because AFS was supposed to be like the ufs, presumably.