tree 045a8b0c905be07df33ae06d776e972448a6e447
parent 9e8fb38e7d7a00e5f63bbb331f0ea4c02286d5e6
author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> 1309255878 +0530
committer Eric Van Hensbergen <ericvh@gmail.com> 1311431572 -0500

fs/9p: add 9P2000.L unlinkat operation

unlinkat - Remove a directory entry

size[4] Tunlinkat tag[2] dirfid[4] name[s] flag[4]
size[4] Runlinkat tag[2]

older Tremove have the below request format

size[4] Tremove tag[2] fid[4]

The remove message is used to remove a directory entry either file or directory
The remove opreation is actually a directory opertation and should ideally have
dirfid, if not we cannot represent the fid on server with anything other than
name. We will have to derive the directory name from fid in the Tremove request.

NOTE: The operation doesn't clunk the unlink fid.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>