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path: root/fs/nfs/internal.h
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2013-09-07NFSv4: Fix security auto-negotiationTrond Myklebust1-1/+1
NFSv4 security auto-negotiation has been broken since commit 4580a92d44e2b21c2254fa5fef0f1bfb43c82318 (NFS: Use server-recommended security flavor by default (NFSv3)) because nfs4_try_mount() will automatically select AUTH_SYS if it sees no auth flavours. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Chuck Lever <chuck.lever@oracle.com>
2013-09-06NFSv4.1 Use MDS auth flavor for data server connectionAndy Adamson1-0/+2
Commit 4edaa308 "NFS: Use "krb5i" to establish NFSv4 state whenever possible" uses the nfs_client cl_rpcclient for all state management operations, and will use krb5i or auth_sys with no regard to the mount command authflavor choice. The MDS, as any NFSv4.1 mount point, uses the nfs_server rpc client for all non-state management operations with a different nfs_server for each fsid encountered traversing the mount point, each with a potentially different auth flavor. pNFS data servers are not mounted in the normal sense as there is no associated nfs_server structure. Data servers can also export multiple fsids, each with a potentially different auth flavor. Data servers need to use the same authflavor as the MDS server rpc client for non-state management operations. Populate a list of rpc clients with the MDS server rpc client auth flavor for the DS to use. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-09-03NFS avoid expired credential keys for buffered writesAndy Adamson1-0/+2
We must avoid buffering a WRITE that is using a credential key (e.g. a GSS context key) that is about to expire or has expired. We currently will paint ourselves into a corner by returning success to the applciation for such a buffered WRITE, only to discover that we do not have permission when we attempt to flush the WRITE (and potentially associated COMMIT) to disk. Use the RPC layer credential key timeout and expire routines which use a a watermark, gss_key_expire_timeo. We test the key in nfs_file_write. If a WRITE is using a credential with a key that will expire within watermark seconds, flush the inode in nfs_write_end and send only NFS_FILE_SYNC WRITEs by adding nfs_ctx_key_to_expire to nfs_need_sync_write. Note that this results in single page NFS_FILE_SYNC WRITEs. Signed-off-by: Andy Adamson <andros@netapp.com> [Trond: removed a pr_warn_ratelimited() for now] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-22NFS: refactor code for calculating the crc32 hash of a filehandleTrond Myklebust1-0/+20
We want to be able to display the crc32 hash of the filehandle in tracepoints. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-07NFS Remove unused authflavour parameter from init_clientAndy Adamson1-3/+2
Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-06-28Merge branch 'labeled-nfs' into linux-nextTrond Myklebust1-1/+1
* labeled-nfs: NFS: Apply v4.1 capabilities to v4.2 NFS: Add in v4.2 callback operation NFS: Make callbacks minor version generic Kconfig: Add Kconfig entry for Labeled NFS V4 client NFS: Extend NFS xattr handlers to accept the security namespace NFS: Client implementation of Labeled-NFS NFS: Add label lifecycle management NFS:Add labels to client function prototypes NFSv4: Extend fattr bitmaps to support all 3 words NFSv4: Introduce new label structure NFSv4: Add label recommended attribute and NFSv4 flags NFSv4.2: Added NFS v4.2 support to the NFS client SELinux: Add new labeling type native labels LSM: Add flags field to security_sb_set_mnt_opts for in kernel mount data. Security: Add Hook to test if the particular xattr is part of a MAC model. Security: Add hook to calculate context based on a negative dentry. NFS: Add NFSv4.2 protocol constants Conflicts: fs/nfs/nfs4proc.c
2013-06-28NFSv4.1 Fix gdia_maxcount calculation to fit in ca_maxresponsesizeAndy Adamson1-0/+1
The GETDEVICEINFO gdia_maxcount represents all of the data being returned within the GETDEVICEINFO4resok structure and includes the XDR overhead. The CREATE_SESSION ca_maxresponsesize is the maximum reply and includes the RPC headers (including security flavor credentials and verifiers). Split out the struct pnfs_device field maxcount which is the gdia_maxcount from the pglen field which is the reply (the total) buffer length. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-06-08NFS: Make callbacks minor version genericBryan Schumaker1-1/+1
I found a few places that hardcode the minor version number rather than making it dependent on the protocol the callback came in over. This patch makes it easier to add new minor versions in the future. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-04-08NFS: Add functionality to allow waiting on all outstanding reads to completeTrond Myklebust1-0/+7
This will later allow NFS locking code to wait for readahead to complete before releasing byte range locks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-02-01Revert "NFS: add nfs_sb_deactive_async to avoid deadlock"Trond Myklebust1-1/+0
This reverts commit 324d003b0cd82151adbaecefef57b73f7959a469. The deadlock turned out to be caused by a workqueue limitation that has now been worked around in the RPC code (see comment in rpc_free_task). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-14NFS: Ensure that we always drop inodes that have been marked as staleTrond Myklebust1-0/+1
There is no need to cache stale inodes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-13nfs: Remove duplicate function declaration in internal.hYanchuan Nian1-6/+0
Remove duplicate function declaration in internal.h Signed-off-by: Yanchuan Nian <ycnian@gmail.com> [Trond: Added nfs_pageio_init_read, which suffered from the same problem] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-06NFSv4: Simplify the NFSv4/v4.1 synchronous call switchTrond Myklebust1-12/+0
We shouldn't need to pass the 'cache_reply' parameter if we initialise the sequence_args/sequence_res in the caller. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-06NFSv4.1: Move slot table and session struct definitions to nfs4session.hTrond Myklebust1-21/+0
Clean up. Gather NFSv4.1 slot definitions in fs/nfs/nfs4session.h. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-12-06NFSv4.1: Cleanup move session slot management to fs/nfs/nfs4session.cTrond Myklebust1-2/+0
NFSv4.1 session management is getting complex enough to deserve a separate file. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-10-31NFS: add nfs_sb_deactive_async to avoid deadlockWeston Andros Adamson1-0/+1
Use nfs_sb_deactive_async instead of nfs_sb_deactive when in a workqueue context. This avoids a deadlock where rpc_shutdown_client loops forever in a workqueue kworker context, trying to kill all RPC tasks associated with the client, while one or more of these tasks have already been assigned to the same kworker (and will never run rpc_exit_task). This approach is needed because RPC tasks that have already been assigned to a kworker by queue_work cannot be canceled, as explained in the comment for workqueue.c:insert_wq_barrier. Signed-off-by: Weston Andros Adamson <dros@netapp.com> [Trond: add module_get/put.] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-10-31nfs: Show original device name verbatim in /proc/*/mount{s,info}Ben Hutchings1-2/+3
Since commit c7f404b ('vfs: new superblock methods to override /proc/*/mount{s,info}'), nfs_path() is used to generate the mounted device name reported back to userland. nfs_path() always generates a trailing slash when the given dentry is the root of an NFS mount, but userland may expect the original device name to be returned verbatim (as it used to be). Make this canonicalisation optional and change the callers accordingly. [jrnieder@gmail.com: use flag instead of bool argument] Reported-and-tested-by: Chris Hiestand <chiestand@salk.edu> Reference: http://bugs.debian.org/669314 Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: <stable@vger.kernel.org> # v2.6.39+ Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-10-08NFS41: send real write size in layoutgetPeng Tao1-0/+1
For buffer write, block layout client scan inode mapping to find next hole and use offset-to-hole as layoutget length. Object layout client uses offset-to-isize as layoutget length. For direct write, both block layout and object layout use dreq->bytes_left. Signed-off-by: Peng Tao <tao.peng@emc.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-10-01NFS: Discover NFSv4 server trunking when mountingChuck Lever1-0/+6
"Server trunking" is a fancy named for a multi-homed NFS server. Trunking might occur if a client sends NFS requests for a single workload to multiple network interfaces on the same server. There are some implications for NFSv4 state management that make it useful for a client to know if a single NFSv4 server instance is multi-homed. (Note this is only a consideration for NFSv4, not for legacy versions of NFS, which are stateless). If a client cares about server trunking, no NFSv4 operations can proceed until that client determines who it is talking to. Thus server IP trunking discovery must be done when the client first encounters an unfamiliar server IP address. The nfs_get_client() function walks the nfs_client_list and matches on server IP address. The outcome of that walk tells us immediately if we have an unfamiliar server IP address. It invokes nfs_init_client() in this case. Thus, nfs4_init_client() is a good spot to perform trunking discovery. Discovery requires a client to establish a fresh client ID, so our client will now send SETCLIENTID or EXCHANGE_ID as the first NFS operation after a successful ping, rather than waiting for an application to perform an operation that requires NFSv4 state. The exact process for detecting trunking is different for NFSv4.0 and NFSv4.1, so a minorversion-specific init_client callout method is introduced. CLID_INUSE recovery is important for the trunking discovery process. CLID_INUSE is a sign the server recognizes the client's nfs_client_id4 id string, but the client is using the wrong principal this time for the SETCLIENTID operation. The SETCLIENTID must be retried with a series of different principals until one works, and then the rest of trunking discovery can proceed. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-10-01NFS: nfs_parsed_mount_options can use unsigned intChuck Lever1-4/+4
fs/nfs/super.c: In function ‘nfs_compare_remount_data’: fs/nfs/super.c:2042:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] fs/nfs/super.c:2043:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] fs/nfs/super.c:2044:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] fs/nfs/super.c:2046:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] fs/nfs/super.c:2047:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] fs/nfs/super.c:2048:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] fs/nfs/super.c:2049:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] fs/nfs/super.c:2050:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] Seen with gcc (GCC) 4.6.3 20120306 (Red Hat 4.6.3-2). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-31Merge branch 'akpm' (Andrew's patch-bomb)Linus Torvalds1-3/+4
Merge Andrew's second set of patches: - MM - a few random fixes - a couple of RTC leftovers * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (120 commits) rtc/rtc-88pm80x: remove unneed devm_kfree rtc/rtc-88pm80x: assign ret only when rtc_register_driver fails mm: hugetlbfs: close race during teardown of hugetlbfs shared page tables tmpfs: distribute interleave better across nodes mm: remove redundant initialization mm: warn if pg_data_t isn't initialized with zero mips: zero out pg_data_t when it's allocated memcg: gix memory accounting scalability in shrink_page_list mm/sparse: remove index_init_lock mm/sparse: more checks on mem_section number mm/sparse: optimize sparse_index_alloc memcg: add mem_cgroup_from_css() helper memcg: further prevent OOM with too many dirty pages memcg: prevent OOM with too many dirty pages mm: mmu_notifier: fix freed page still mapped in secondary MMU mm: memcg: only check anon swapin page charges for swap cache mm: memcg: only check swap cache pages for repeated charging mm: memcg: split swapin charge function into private and public part mm: memcg: remove needless !mm fixup to init_mm when charging mm: memcg: remove unneeded shmem charge type ...
2012-07-31nfs: teach the NFS client how to treat PG_swapcache pagesMel Gorman1-3/+4
Replace all relevant occurences of page->index and page->mapping in the NFS client with the new page_file_index() and page_file_mapping() functions. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Mel Gorman <mgorman@suse.de> Acked-by: Rik van Riel <riel@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: David S. Miller <davem@davemloft.net> Cc: Eric B Munson <emunson@mgebm.net> Cc: Eric Paris <eparis@redhat.com> Cc: James Morris <jmorris@namei.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Mike Christie <michaelc@cs.wisc.edu> Cc: Neil Brown <neilb@suse.de> Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Xiaotian Feng <dfeng@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30NFS: Convert v4 into a moduleBryan Schumaker1-4/+4
This patch exports symbols needed by the v4 module. In addition, I also switch over to using IS_ENABLED() to check if CONFIG_NFS_V4 or CONFIG_NFS_V4_MODULE are set. The module (nfs4.ko) will be created in the same directory as nfs.ko and will be automatically loaded the first time you try to mount over NFS v4. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-30NFS: Convert v3 into a moduleBryan Schumaker1-1/+1
This patch exports symbols and moves over the final structures needed by the v3 module. In addition, I also switch over to using IS_ENABLED() to check if CONFIG_NFS_V3 or CONFIG_NFS_V3_MODULE are set. The module (nfs3.ko) will be created in the same directory as nfs.ko and will be automatically loaded the first time you try to mount over NFS v3. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-30NFS: Split out remaining NFS v4 inode functionsBryan Schumaker1-3/+1
Somehow I missed this in my previous patch series, but these functions are only needed by the v4 code and should be moved to a v4-only file. I wasn't exactly sure where I should put these functions, so I moved them into nfs4super.c where I could make them static. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-30NFS: Pass super operations and xattr handlers in the nfs_subversionBryan Schumaker1-0/+1
I can set all variables in the nfs_fill_super() function, allowing me to remove the nfs4_fill_super() function. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-30NFS: Only initialize the ACL client in the v3 caseBryan Schumaker1-5/+10
v2 and v4 don't use it, so I create two new nfs_rpc_ops functions to initialize the ACL client only when we are using v3. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-30NFS: Create a try_mount rpc opBryan Schumaker1-0/+2
I'm already looking up the nfs subversion in nfs_fs_mount(), so I have easy access to rpc_ops that used to be difficult to reach. This allows me to set up a different mount path for NFS v2/3 and NFS v4. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-30NFS: Add version registering frameworkBryan Schumaker1-4/+6
This patch adds in the code to track multiple versions of the NFS protocol. I created default structures for v2, v3 and v4 so that each version can continue to work while I convert them into kernel modules. I also removed the const parameter from the rpc_version array so that I can change it at runtime. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-17NFS: Split out the NFS v4 filesystem typesBryan Schumaker1-0/+29
This allows me to move the v4 mounting and unmounting functions out of the generic client and into a file that is only compiled when CONFIG_NFS_V4 is enabled. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-17NFS: Split out NFS v4 server creating codeBryan Schumaker1-0/+25
These functions are specific to NFS v4 and can be moved to nfs4client.c to keep them out of the generic client. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-17NFS: Initialize the NFS v4 client from init_nfs_v4()Bryan Schumaker1-0/+1
And split these functions out of the generic client into a v4 specific file. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-17NFS: Split out NFS v4 file operationsBryan Schumaker1-0/+17
This patch moves the NFS v4 file functions into a new file that is only compiled when CONFIG_NFS_V4 is enabled. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-17NFS: Split out NFS v2 inode operationsBryan Schumaker1-0/+9
This patch moves the NFS v2 file and directory inode functions into files that are only compiled whet CONFIG_NFS_V2 is enabled. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-29NFS: Create an write_pageio_init() functionBryan Schumaker1-1/+1
pNFS needs to select a write function based on the layout driver currently in use, so I let each NFS version decide how to best handle initializing writes. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-29NFS: Create an read_pageio_init() functionBryan Schumaker1-1/+1
pNFS needs to select a read function based on the layout driver currently in use, so I let each NFS version decide how to best handle initializing reads. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-29NFS: Create an alloc_client rpc_opBryan Schumaker1-0/+1
This gives NFS v4 a way to set up callbacks and sessions without v2 or v3 having to do them as well. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-29NFS: Create a free_client rpc_opBryan Schumaker1-0/+1
NFS v4 needs a way to shut down callbacks and sessions, but v2 and v3 don't. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-31NFS: Ensure that setattr and getattr wait for O_DIRECT write completionTrond Myklebust1-0/+4
Use the same mechanism as the block devices are using, but move the helper functions from fs/direct-io.c into fs/inode.c to remove the dependency on CONFIG_BLOCK. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Fred Isaman <iisaman@netapp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-23NFSv4: Fix a race in the net namespace mount notificationTrond Myklebust1-0/+1
Since the struct nfs_client gets added to the global nfs_client_list before it is initialised, it is possible that rpc_pipefs_event can end up trying to create idmapper entries on such a thing. The solution is to have the mount notification wait for the initialisation of each nfs_client to complete, and then to skip any entries for which the it failed. Reported-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
2012-05-23NFSv4.1: Fix session initialisation racesTrond Myklebust1-2/+1
Session initialisation is not complete until the lease manager has run. We need to ensure that both nfs4_init_session and nfs4_init_ds_session do so, and that they check for any resulting errors in clp->cl_cons_state. Only after this is done, can nfs4_ds_connect check the contents of clp->cl_exchange_flags. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Andy Adamson <andros@netapp.com>
2012-05-22NFS: Add nfs_client behavior flagsChuck Lever1-4/+2
"noresvport" and "discrtry" can be passed to nfs_create_rpc_client() by setting flags in the passed-in nfs_client. This change makes it easy to add new flags. Note that these settings are now "sticky" over the lifetime of a struct nfs_client, and may even be copied when an nfs_client is cloned. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-22NFS: Refactor nfs_get_client(): initialize nfs_clientChuck Lever1-2/+2
Clean up: Continue to rationalize the locking in nfs_get_client() by moving the logic that handles the case where a matching server IP address is not found. When we support server trunking detection, client initialization may return a different nfs_client struct than was passed to it. Change the synopsis of the init_client methods to return an nfs_client. The client initialization logic in nfs_get_client() is not much more than a wrapper around ->init_client. It's simpler to keep the little bits of error handling in the version-specific init_client methods. No behavior change is expected. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-19NFSv4.1 remove nfs4_reset_write and nfs4_reset_readAndy Adamson1-2/+0
Replaced by filelayout_reset_write and filelayout_reset_read Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-19NFSv4.1 data server timeo and retrans module parametersAndy Adamson1-1/+3
Set the recovery parameters for data servers. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-19NFSv4.1 set RPC_TASK_SOFTCONN for filelayout DS RPC callsAndy Adamson1-3/+3
RPC_TASK_SOFTCONN returns connection errors to the caller which allows the pNFS file layout to quickly try the MDS or perhaps another DS. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-14NFS: Create an NFS v3 stat_to_errno()Bryan Schumaker1-1/+0
In theory, NFS v3 can have different error versions than NFS v2. v4 is already using its own nfs4_stat_to_errno() to map error codes, so rather than create something in the generic client for v2 and v3 to share I instead give v3 its own function. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-14NFS: Create a single function for text mount dataBryan Schumaker1-0/+1
The v2/3 and v4 cases were very similar, with just a few parameters changed. This makes it easy to share code. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-01NFSv2/v3: Simulate the change attributeTrond Myklebust1-0/+12
Use the ctime to simulate a change attribute for NFSv2 and NFSv3. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-04-27NFS: Create a submount rpc_opBryan Schumaker1-11/+4
This simplifies the code for v2 and v3 and gives v4 a chance to decide on referrals without needing to modify the generic client. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 12:48:26 +0000