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path: root/fs/nfs/nfs4proc.c
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2005-12-03NFSv4: Fix an Oops in the synchronous write pathTrond Myklebust1-1/+10
- 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>
2005-11-26NFSv4: Fix typo in lock cachingTrond Myklebust1-3/+3
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 Myklebust1-8/+28
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 Myklebust1-0/+18
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 Myklebust1-5/+3
Ensure that we retry the failed operation... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Fix problem with OPEN_DOWNGRADETrond Myklebust1-13/+10
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 Myklebust1-18/+17
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>
2005-10-28NFSv4: Add post-op attributes to NFSv4 write and commit callbacks.Trond Myklebust1-1/+12
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-28NFSv4: Add post-op attributes to nfs4_proc_remove()Trond Myklebust1-6/+21
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-28NFSv4: Add post-op attributes to nfs4_proc_rename()Trond Myklebust1-2/+13
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-28NFSv4: Add post-op attributes to nfs4_proc_link()Trond Myklebust1-5/+17
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>
2005-10-28NFS: Add optional post-op getattr instruction to the NFSv4 file close.Trond Myklebust1-1/+8
"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>
2005-10-28NFSv4: Add directory post-op attributes to the CREATE operations.Trond Myklebust1-5/+23
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>
2005-10-28NFS: Don't let nfs_end_data_update() clobber attribute update informationTrond Myklebust1-0/+3
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>
2005-10-28NFS: Cleanup initialisation of struct nfs_fattrTrond Myklebust1-23/+20
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-21NFSv4: Fix up locking for nfs4_state_ownerTrond Myklebust1-0/+2
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-19NFSv4: Fix acl buffer sizeJ. Bruce Fields1-1/+1
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>
2005-10-19NFSv4: Ensure that we recover from the OPEN + OPEN_CONFIRM BAD_STATEID raceTrond Myklebust1-0/+10
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>
2005-10-19NFSv4: If a delegated open fails, ensure that we return the delegationTrond Myklebust1-0/+2
Unless of course the open fails due to permission issues. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-19NFSv4: Return delegations in case we're changing ACLsTrond Myklebust1-0/+1
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-19[NFS]: Check that the server returns a valid regular file to our OPEN requestTrond Myklebust1-0/+16
Since it appears that some servers don't... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-19NFSv4: Eliminate nfsv4 open race...Trond Myklebust1-81/+56
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>
2005-10-19NFSv4: Fix up handling of open_to_lock sequence idsTrond Myklebust1-37/+32
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-19NFSv4: Make NFS clean up byte range locks asynchronouslyTrond Myklebust1-51/+110
Currently we fail to do so if the process was signalled. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-19NFSv4: Add missing handling of OPEN_CONFIRM requests on CLAIM_DELEGATE_CUR.Trond Myklebust1-1/+12
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-19NFSv4: Remove nfs4_client->cl_sem from close() pathTrond Myklebust1-5/+0
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>
2005-10-19NFSv4: Remove obsolete state_owner and lock_owner semaphoresTrond Myklebust1-18/+0
OPEN, CLOSE, etc no longer need these semaphores to ensure ordering of requests. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-19NFSv4: Fix a potential CLOSE raceTrond Myklebust1-33/+77
Once the state_owner and lock_owner semaphores get removed, it will be possible for other OPEN requests to reopen the same file if they have lower sequence ids than our CLOSE call. This patch ensures that we recheck the file state once nfs_wait_on_sequence() has completed waiting. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-19NFSv4: Add functions to order RPC callsTrond Myklebust1-38/+73
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>
2005-09-10[PATCH] fs: fix-up schedule_timeout() usageNishanth Aravamudan1-8/+4
Use schedule_timeout_{,un}interruptible() instead of set_current_state()/schedule_timeout() to reduce kernel size. Also use helper functions to convert between human time units and jiffies rather than constant HZ division to avoid rounding errors. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-16[PATCH] NFS: Ensure we always update inode->i_mode when doing O_EXCL createsTrond Myklebust1-2/+8
When the client performs an exclusive create and opens the file for writing, a Netapp filer will first create the file using the mode 01777. It does this since an NFSv3/v4 exclusive create cannot immediately set the mode bits. The 01777 mode then gets put into the inode->i_mode. After the file creation is successful, we then do a setattr to change the mode to the correct value (as per the NFS spec). The problem is that nfs_refresh_inode() no longer updates inode->i_mode, so the latter retains the 01777 mode. A bit later, the VFS notices this, and calls remove_suid(). This of course now resets the file mode to inode->i_mode & 0777. Hey presto, the file mode on the server is now magically changed to 0777. Duh... Fixes http://bugzilla.linux-nfs.org/show_bug.cgi?id=32 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23[PATCH] NFS: Add debugging code to NFSv4 readdirTrond Myklebust1-0/+5
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-23[PATCH] NFSv4: Clean up nfs4 lock state accountingTrond Myklebust1-39/+30
Ensure that lock owner structures are not released prematurely. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-23[PATCH] NFSv4: Fix up races in nfs4_proc_setattr()Trond Myklebust1-36/+19
If we do not hold a valid stateid that is open for writes, there is little point in doing an extra open of the file, as the RFC does not appear to mandate this... Make setattr use the correct stateid if we're holding mandatory byte range locks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-23[PATCH] NFSv4: Ensure that propagate NFSv4 state errors to the reclaim codeTrond Myklebust1-11/+40
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-23[PATCH] NFSv4: empty array fixAndrew Morton1-1/+1
Older gcc's don't like this. fs/nfs/nfs4proc.c:2194: field `data' has incomplete type Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-23[PATCH] NFSv4: fs/nfs/nfs4proc.c: small simplificationAdrian Bunk1-1/+1
The Coverity checker noticed that such a simplification was possible. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-23[PATCH] NFSv4: client-side caching NFSv4 ACLsJ. Bruce Fields1-9/+120
Add nfs4_acl field to the nfs_inode, and use it to cache acls. Only cache acls of size up to a page. Also prepare for up to a page of acl data even when the user doesn't pass in a buffer, as when they want to get the acl length to decide what size buffer to allocate. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-23[PATCH] NFSv4: ACL support for the NFSv4 client: writeJ. Bruce Fields1-1/+33
Client-side write support for NFSv4 ACLs. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-23[PATCH] NFSv4: ACL support for the NFSv4 client: readJ. Bruce Fields1-4/+65
Client-side support for NFSv4 ACLs. Exports the raw xdr code via the system.nfs4_acl extended attribute. It is up to userspace to decode the acl (and to provide correctly xdr'd acls on setxattr), and to convert to/from POSIX ACLs if desired. This patch provides only the read support. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-23[PATCH] NFSv4: Add {get,set,list}xattr methods for nfs4J. Bruce Fields1-1/+38
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>
2005-06-23[PATCH] NFS: Allow NFS versions to support different sets of inode operations.J. Bruce Fields1-0/+1
ACL support will require supporting additional inode operations in v4 (getxattr, setxattr, listxattr). This patch allows different protocol versions to support different inode operations by adding a file_inode_ops to the nfs_rpc_ops (to match the existing dir_inode_ops). Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-23[PATCH] NFS: Header file cleanup...Trond Myklebust1-3/+2
- 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>
2005-04-17Linux-2.6.12-rc2Linus Torvalds1-0/+2786
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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