On Mon, Aug 23, 2010 at 1:06 AM, Neil Brown <neilb@suse.de> wrote:
Why ot creating a special file system for this kind of operation ?
I mean a vfsmnt filesystem, with each directory on the root is a
symlink to the root of the real vfsmnt root ?
I could be even be in proc space like /proc/self/vfsmnt
path_to_handle will return a relative path from this directory like
0x75843558/somehandle (if X is on /usr/bin/X and usr is mounted by
filesystem 0x75843558)
path_to_fshandle() will return 0x75843558
opening file handle will be just a matter to thus open
/proc/self/vfsmount/0x75843558/somehandle
Permission will be determined by vfsmount filesystem.
No need to create new syscall all te handle to filename will be handle
by the vfsmount filesystem
We could even use at existing command. The dirfd will need to be only
/proc/self/vfsmnt (and if you need to get a fd without mounting /proc
create a syscall to get this fd).
Does sound plausible ?
Bastien
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