David Howells
dhowe****@redha*****
Sat Aug 11 00:53:58 JST 2018
Theodore Y. Ts'o <tytso****@mit*****> 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.
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