Messages in this thread | | | Date | Thu, 19 Jun 2003 00:30:33 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] VFS autmounter support |
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David Howells wrote: >>>That _is_ actually true. Doing "ls -l" in that directory would otherwise >>>cause a mount storm. >>> >> >>It's not. ls -l and all the GUI tools do lstat(), not stat(). > > > Sorry... you're correct. That should have been "ls -F" or "ls --color", both > of which are, I believe, commonly used - _they_ definitely use stat() as well > as lstat(). >
Only if S_ISLNK.
> >>>follow_link resolving to itself? Surely that'll cause ELOOP very quickly? >>>And where does this "dummy directory inode" live? >> >>Nope. You can follow_link() nonrecursively. You need a dummy directory >>inode to mount upon anyway. > > You're right about follow_link() not recursing... it would have to recurse > itself, and so can avoid that. However, if it only ever follows to itself, how > does that help? That never actually gets you anywhere... It needs to trigger a > mount at some point. > > Or do you mean it should follow to an arbitrary (disconnected, otherwise it > changes the topology from what the AFS admin required) dentry with a dummy > directory inode attached to it? >
You could do that if you wanted to, but it doesn't need to.
-hpa
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