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path: root/fs/nfs/nfs4proc.c
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2006-03-20NFS: Cleanup of NFS read codeTrond Myklebust
Same callback hierarchy inversion as for the NFS write calls. This patch is not strictly speaking needed by the O_DIRECT code, but avoids confusing differences between the asynchronous read and write code. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20NFS: Cleanup of NFS write code in preparation for asynchronous o_directTrond Myklebust
This patch inverts the callback hierarchy for NFS write calls. Instead of having the NFSv2/v3/v4-specific code set up the RPC callback ops, we allow the original caller to do so. This allows for more flexibility w.r.t. how to set up and tear down the nfs_write_data structure while still allowing the NFSv3/v4 code to perform error handling. The greater flexibility is needed by the asynchronous O_DIRECT code, which wants to be able to hold on to the original nfs_write_data structures after the WRITE RPC call has completed in order to be able to replay them if the COMMIT call determines that the server has rebooted. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20NFS: add hooks to account for NFSERR_JUKEBOX errorsChuck Lever
Make an inode or an nfs_server struct available in the logic that handles JUKEBOX/DELAY type errors so the NFS client can account for them. This patch is split out from the main nfs iostat patch to highlight minor architectural changes required to support this statistic. Test plan: None. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20NFSv4: Kill braindead gcc warningsTrond Myklebust
nfs4_open_revalidate: 'res' may be used uninitialized nfs4_callback_compound: ‘hdr_res.nops’ may be used uninitialized 'op_nr’ may be used uninitialized encode_getattr_res: ‘savep’ may be used uninitialized Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20NFS: "const static" vs "static const" in nfs4Jesper Juhl
My previous "const static" vs "static const" cleanup missed a single case, patch below takes care of it. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-14[PATCH] NFSv4: fix mount segfault on errors returned that are < -1000Trond Myklebust
It turns out that nfs4_proc_get_root() may return raw NFSv4 errors instead of mapping them to kernel errors. Problem spotted by Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06NFSv4: Ensure DELEGRETURN returns attributesTrond Myklebust
Upon return of a write delegation, the server will almost always bump the change attribute. Ensure that we pick up that change so that we don't invalidate our data cache unnecessarily. 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: OPEN/LOCK/LOCKU/CLOSE will automatically renew the NFSv4 leaseTrond Myklebust
Cut down on the number of unnecessary RENEW requests on the wire. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: Make DELEGRETURN an interruptible operation.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: Convert LOCK rpc call into an asynchronous RPC callTrond Myklebust
In order to allow users to interrupt/cancel it. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: locking XDR cleanupTrond Myklebust
Get rid of some unnecessary intermediate structures Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: Make open recovery track O_RDWR, O_RDONLY and O_WRONLY correctlyTrond Myklebust
When recovering from a delegation recall or a network partition, we need to replay open(O_RDWR), open(O_RDONLY) and open(O_WRONLY) separately. 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>
2006-01-06NFSv4: Make open_confirm() asynchronous tooTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: Convert open() into an asynchronous RPC callTrond Myklebust
OPEN is a stateful operation, so we must ensure that it always completes. In order to allow users to interrupt the operation, we need to make the RPC call asynchronous, and then wait on completion (or cancel). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: Allocate OPEN call RPC arguments using kmalloc()Trond Myklebust
Cleanup in preparation for making OPEN calls interruptible by the user. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06NFSv4: Make locku use the new RPC "wait on completion" interface.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06SUNRPC: Further cleanupsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06RPC: Clean up RPC task structureTrond Myklebust
Shrink the RPC task structure. Instead of storing separate pointers for task->tk_exit and task->tk_release, put them in a structure. Also pass the user data pointer as a parameter instead of passing it via task->tk_calldata. This enables us to nest callbacks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-12-03NFSv4: Fix an Oops in the synchronous write pathTrond Myklebust
- Missing initialisation of attribute bitmask in _nfs4_proc_write() - On success, _nfs4_proc_write() must return number of bytes written. - Missing post_op_update_inode() in _nfs4_proc_write() - Missing initialisation of attribute bitmask in _nfs4_proc_commit() - Missing post_op_update_inode() in _nfs4_proc_commit() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-25NFSv4: Fix typo in lock cachingTrond Myklebust
When caching locks due to holding a file delegation, we must always check against local locks before sending anything to the server. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Teach NFSv4 to cache locks when we hold a delegationTrond Myklebust
Now that we have a method of dealing with delegation recalls, actually enable the caching of posix and BSD locks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Recover locks too when returning a delegationTrond Myklebust
Delegations allow us to cache posix and BSD locks, however when the delegation is recalled, we need to "flush the cache" and send the cached LOCK requests to the server. This patch sets up the mechanism for doing so. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Fix the handling of the error NFS4ERR_OLD_STATEIDTrond Myklebust
Ensure that we retry the failed operation... 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>
2005-10-27NFSv4: Add post-op attributes to NFSv4 write and commit callbacks.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFSv4: Add post-op attributes to nfs4_proc_remove()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFSv4: Add post-op attributes to nfs4_proc_rename()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFSv4: Add post-op attributes to nfs4_proc_link()Trond Myklebust
Optimise attribute revalidation when hardlinking. Add post-op attributes for the directory and the original inode. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Add optional post-op getattr instruction to the NFSv4 file close.Trond Myklebust
"Optional" means that the close call will not fail if the getattr at the end of the compound fails. If it does succeed, try to refresh inode attributes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFSv4: Add directory post-op attributes to the CREATE operations.Trond Myklebust
Since the directory attributes change every time we CREATE a file, we might as well pick up the new directory attributes in the same compound. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Don't let nfs_end_data_update() clobber attribute update informationTrond Myklebust
Since we almost always call nfs_end_data_update() after we called nfs_refresh_inode(), we now end up marking the inode metadata as needing revalidation immediately after having updated it. This patch rearranges things so that we mark the inode as needing revalidation _before_ we call nfs_refresh_inode() on those operations that need it. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Cleanup initialisation of struct nfs_fattrTrond Myklebust
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>
2005-10-18NFSv4: Fix acl buffer sizeJ. Bruce Fields
resp_len is passed in as buffer size to decode routine; make sure it's set right in case where userspace provides less than a page's worth of buffer. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Ensure that we recover from the OPEN + OPEN_CONFIRM BAD_STATEID raceTrond Myklebust
If the server is in the unconfirmed OPEN state for a given open owner and receives a second OPEN for the same open owner, it will cancel the state of the first request and set up an OPEN_CONFIRM for the second. This can cause a race that is discussed in rfc3530 on page 181. The following patch allows the client to recover by retrying the original open request. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: If a delegated open fails, ensure that we return the delegationTrond Myklebust
Unless of course the open fails due to permission issues. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Return delegations in case we're changing ACLsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18[NFS]: Check that the server returns a valid regular file to our OPEN requestTrond Myklebust
Since it appears that some servers don't... 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: Fix up handling of open_to_lock sequence idsTrond Myklebust
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: Add missing handling of OPEN_CONFIRM requests on CLAIM_DELEGATE_CUR.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Remove nfs4_client->cl_sem from close() pathTrond Myklebust
We no longer need to worry about collisions between close() and the state recovery code, since the new close will automatically recheck the file state once it is done waiting on its sequence slot. Ditto for the nfs4_proc_locku() procedure. 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>
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