| From | David Howells <> | Subject | Re: BUG: Mount ignores mount options | Date | Fri, 10 Aug 2018 16:53:58 +0100 |
| |
Theodore Y. Ts'o <tytso@mit.edu> wrote:
> Even *with* file system support, there's no way today for the VFS to > keep track of whether a pathname resolution came through one > mountpoint or another, so I can't do something like this:
Ummm... Isn't that encoded in the vfsmount pointer in struct path?
However, the case folding stuff - is that a superblockism of a mountpointism?
> So if the file system has been mounted with one set of mount options, > and you want to try to mount it with a conflicting set of mount > options and you don't want it to silently ignore the mount options, > the *only* thing we can today is to refuse the mount and return an > error.
With fsopen() there is the option to have the filesystem and the LSM attempt to compare the non-key[*] mount options and reject the attempt to share if they differ in any way.
David
[*] sget lookup keys, that is.
|