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path: root/fs/nfs/nfs4_fs.h
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2006-06-09NFSv4: Define an fs_locations bitmapManoj Naik
This is (similar to getattr bitmap) but includes fs_locations and mounted_on_fileid attributes. Use this bitmap for encoding in fs_locations requests. Note: We can probably do better by requesting locations as part of fsinfo itself. Signed-off-by: Manoj Naik <manoj@almaden.ibm.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-06-09NFSv4: convert fs-locations-components to conform to RFC3530Manoj Naik
Use component4-style formats for decoding list of servers and pathnames in fs_locations. Signed-off-by: Manoj Naik <manoj@almaden.ibm.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-06-09NFSv4: Implement the fs_locations function callTrond Myklebust
NFSv4 allows for the fact that filesystems may be replicated across several servers or that they may be migrated to a backup server in case of failure of the primary server. fs_locations is an NFSv4 operation for retrieving information about the location of migrated and/or replicated filesystems. Based on an initial implementation by Jiaying Zhang <jiayingz@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-06-09NFS: Ensure the client submounts, when it crosses a server mountpoint.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: Remove requirement for machine creds for the "setclientid" operationTrond Myklebust
Use a cred from the nfs4_client->cl_state_owners list. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: Remove requirement for machine creds for the "renew" operationTrond Myklebust
In RFC3530, the RENEW operation is allowed to use either the same principal, RPC security flavour and (if RPCSEC_GSS), the same mechanism and service that was used for SETCLIENTID_CONFIRM OR Any principal, RPC security flavour and service combination that currently has an OPEN file on the server. Choose the latter since that doesn't require us to keep credentials for the same principal for the entire duration of the mount. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: Send RENEW requests to the server only when we're holding stateTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: State recovery cleanupTrond Myklebust
Use wait_on_bit() when waiting for state recovery to complete. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: Make nfs4_state track O_RDWR, O_RDONLY and O_WRONLY separatelyTrond Myklebust
A closer reading of RFC3530 reveals that OPEN_DOWNGRADE must always specify a access modes that have been the argument of a previous OPEN operation. IOW: doing OPEN(O_RDWR) and then OPEN_DOWNGRADE(O_WRONLY) is forbidden unless the user called OPEN(O_WRONLY) In order to fix that, we really need to track the three possible open states separately. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Fix problem with OPEN_DOWNGRADETrond Myklebust
RFC 3530 states that for OPEN_DOWNGRADE "The share_access and share_deny bits specified must be exactly equal to the union of the share_access and share_deny bits specified for some subset of the OPENs in effect for current openowner on the current file. Setattr is currently violating the NFSv4 rules for OPEN_DOWNGRADE in that it may cause a downgrade from OPEN4_SHARE_ACCESS_BOTH to OPEN4_SHARE_ACCESS_WRITE despite the fact that there exists no open file with O_WRONLY access mode. Fix the problem by replacing nfs4_find_state() with a modified version of nfs_find_open_context(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Fix a race between open() and close()Trond Myklebust
We must not remove the nfs4_state structure from the inode open lists before we are in sequence lock. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-20NFSv4: Fix up locking for nfs4_state_ownerTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-20NFSv4: Final tweak to sequence idTrond Myklebust
Sacrifice queueing fairness for performance. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Fix an oopsable condition in nfs_free_seqidTrond Myklebust
Storing a pointer to the struct rpc_task in the nfs_seqid is broken since the nfs_seqid may be freed well after the task has been destroyed. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Eliminate nfsv4 open race...Trond Myklebust
Make NFSv4 return the fully initialized file pointer with the stateid that it created in the lookup w/intent. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Make NFS clean up byte range locks asynchronouslyTrond Myklebust
Currently we fail to do so if the process was signalled. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Remove obsolete state_owner and lock_owner semaphoresTrond Myklebust
OPEN, CLOSE, etc no longer need these semaphores to ensure ordering of requests. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Add functions to order RPC callsTrond Myklebust
NFSv4 file state-changing functions such as OPEN, CLOSE, LOCK,... are all labelled with "sequence identifiers" in order to prevent the server from reordering RPC requests, as this could cause its file state to become out of sync with the client. Currently the NFS client code enforces this ordering locally using semaphores to restrict access to structures until the RPC call is done. This, of course, only works with synchronous RPC calls, since the user process must first grab the semaphore. By dropping semaphores, and instead teaching the RPC engine to hold the RPC calls until they are ready to be sent, we can extend this process to work nicely with asynchronous RPC calls too. This patch adds a new list called "rpc_sequence" that defines the order of the RPC calls to be sent. We add one such list for each state_owner. When an RPC call is ready to be sent, it checks if it is top of the rpc_sequence list. If so, it proceeds. If not, it goes back to sleep, and loops until it hits top of the list. Once the RPC call has completed, it can then bump the sequence id counter, and remove itself from the rpc_sequence list, and then wake up the next sleeper. Note that the state_owner sequence ids and lock_owner sequence ids are all indexed to the same rpc_sequence list, so OPEN, LOCK,... requests are all ordered w.r.t. each other. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] NFSv4: Clean up nfs4 lock state accountingTrond Myklebust
Ensure that lock owner structures are not released prematurely. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] NFSv4: Fix build warningReuben Farrelly
From: Reuben Farrelly <reuben-lkml@reub.net> With gcc-4.0: fs/nfs/nfs4proc.c:2976: error: static declaration of 'nfs4_file_inode_operations' follows non-static declaration fs/nfs/nfs4_fs.h:179: error: previous declaration of 'nfs4_file_inode_operations' was here Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] NFSv4: Add {get,set,list}xattr methods for nfs4J. Bruce Fields
Add {get,set,list}xattr methods for nfs4. The new methods are no-ops, to be used by subsequent ACL patch. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] NFS: Header file cleanup...Trond Myklebust
- Move NFSv4 state definitions into a private header file. - Clean up gunk in nfs_fs.h Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>