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* Merge commit 'v2.6.26' into bkl-removalJonathan Corbet2008-07-14
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| * NFS: Fix readdir cache invalidationTrond Myklebust2008-07-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | invalidate_inode_pages2_range() takes page offset arguments, not byte ranges. Another thought is that individual pages might perhaps get evicted by VM pressure, in which case we might perhaps want to re-read not only the evicted page, but all subsequent pages too (in case the server returns more/less data per page so that the alignment of the next entry changes). We should therefore remove the condition that we only do this on page->index==0. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: nfs_updatepage(): don't mark page as dirty if an error occurredTrond Myklebust2008-06-23
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Fix filehandle size comparisons in the mount codeTrond Myklebust2008-06-23
| | | | | | | | | | | | | | Fix a sign issue in xdr_decode_fhstatus3() Fix incorrect comparison in nfs_validate_mount_data() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Reduce the NFS mount code stack usage.Trond Myklebust2008-06-23
| | | | | | | | | | | | | | This appears to fix the Oops reported in http://bugzilla.kernel.org/show_bug.cgi?id=10826 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * nfs: make nfs4_drop_state_owner() staticAdrian Bunk2008-05-16
| | | | | | | | | | | | | | | | nfs4_drop_state_owner() can now become static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * nfs: path_{get,put}() cleanupsJan Blunck2008-05-16
| | | | | | | | | | | | | | | | | | | | | | Here are some more places where path_{get,put}() can be used instead of dput()/mntput() pair. Signed-off-by: Jan Blunck <jblunck@suse.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * nfs: replace remaining __FUNCTION__ occurrencesHarvey Harrison2008-05-16
| | | | | | | | | | | | | | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * nfs/lsm: make NFSv4 set LSM mount optionsEric Paris2008-05-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NFSv3 get_sb operations call into the LSM layer to set security options passed from userspace. NFSv4 hooks were not originally added since it was reasonably late in the merge window and NFSv3 was the only thing that had regressed (v4 has never supported any LSM options) This patch makes NFSv4 call into the LSM to set security options rather than just blindly dropping them with no notice to the user as happens today. This patch was tested in a simple NFSv4 environment with the context= option and appeared to work as expected. Signed-off-by: Eric Paris <eparis@redhat.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: James Morris <jmorris@namei.org> Cc: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: Check the return value of decode_compound_hdr_arg()Trond Myklebust2008-05-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If decode_compound_hdr_arg() returns a resource error, then we cannot proceed to process the callback. Return a 'GARBAGE_ARGS' rpc-level error to the caller instead. If, however, the minor version field is incorrect, then we need to propagate the resulting NFS4ERR_MINOR_VERS_MISMATCH error back as the compound status field (setting the nops field to 0). Finally, if encode_compound_hdr_res() returns an error, we need to return an RPC_SYSTEM_ERR to the caller. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * nfs: fix race in nfs_dirty_requestFred Isaman2008-05-16
| | | | | | | | | | | | | | | | | | When called from nfs_flush_incompatible, the req is not locked, so req->wb_page might be set to NULL before it is used by PageWriteback. Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Ensure that 'noac' and/or 'actimeo=0' turn off attribute cachingTrond Myklebust2008-05-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Both the 'noac' and 'actimeo=0' mount options should ensure that attributes are not cached, however a bug in nfs_attribute_timeout() means that currently, the attributes may in fact get cached for up to one jiffy. This has been seen to cause corruption in some applications. The reason for the bug is that the time_in_range() test returns 'true' as long as the current time lies between nfsi->read_cache_jiffies and nfsi->read_cache_jiffies + nfsi->attrtimeo. In other words, if jiffies equals nfsi->read_cache_jiffies, then we still cache the attribute data. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | Remove BKL from remote_llseek v2Andi Kleen2008-07-02
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Replace remote_llseek with generic_file_llseek_unlocked (to force compilation failures in all users) - Change all users to either use generic_file_llseek_unlocked directly or take the BKL around. I changed the file systems who don't use the BKL for anything (CIFS, GFS) to call it directly. NCPFS and SMBFS and NFS take the BKL, but explicitely in their own source now. I moved them all over in a single patch to avoid unbisectable sections. Open problem: 32bit kernels can corrupt fpos because its modification is not atomic, but they can do that anyways because there's other paths who modify it without BKL. Do we need a special lock for the pos/f_version = 0 checks? Trond says the NFS BKL is likely not needed, but keep it for now until his full audit. v2: Use generic_file_llseek_unlocked instead of remote_llseek_unlocked and factor duplicated code (suggested by hch) Cc: Trond.Myklebust@netapp.com Cc: swhiteho@redhat.com Cc: sfrench@samba.org Cc: vandrove@vc.cvut.cz Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* mm: bdi: expose the BDI object in sysfs for NFSMiklos Szeredi2008-04-30
| | | | | | | | | | | Register NFS' backing_dev_info under sysfs with the name "nfs-MAJOR:MINOR" Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* nfs: use proc_create to setup de->proc_fopsDenis V. Lunev2008-04-29
| | | | | | | | | | | | | Use proc_create() to make sure that ->proc_fops be setup before gluing PDE to main tree. Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc: remove proc_root_fsAlexey Dobriyan2008-04-29
| | | | | | | | Use creation by full path instead: "fs/foo". Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] restore sane ->umount_begin() APIAl Viro2008-04-25
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds2008-04-24
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (80 commits) SUNRPC: Invalidate the RPCSEC_GSS session if the server dropped the request make nfs_automount_list static NFS: remove duplicate flags assignment from nfs_validate_mount_data NFS - fix potential NULL pointer dereference v2 SUNRPC: Don't change the RPCSEC_GSS context on a credential that is in use SUNRPC: Fix a race in gss_refresh_upcall() SUNRPC: Don't disconnect more than once if retransmitting NFSv4 requests SUNRPC: Remove the unused export of xprt_force_disconnect SUNRPC: remove XS_SENDMSG_RETRY SUNRPC: Protect creds against early garbage collection NFSv4: Attempt to use machine credentials in SETCLIENTID calls NFSv4: Reintroduce machine creds NFSv4: Don't use cred->cr_ops->cr_name in nfs4_proc_setclientid() nfs: fix printout of multiword bitfields nfs: return negative error value from nfs{,4}_stat_to_errno NLM/lockd: Ensure client locking calls use correct credentials NFS: Remove the buggy lock-if-signalled case from do_setlk() NLM/lockd: Fix a race when cancelling a blocking lock NLM/lockd: Ensure that nlmclnt_cancel() returns results of the CANCEL call NLM: Remove the signal masking in nlmclnt_proc/nlmclnt_cancel ...
| * Merge branch 'devel'Trond Myklebust2008-04-24
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| | * make nfs_automount_list staticAdrian Bunk2008-04-19
| | | | | | | | | | | | | | | | | | | | | nfs_automount_list can now become static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: remove duplicate flags assignment from nfs_validate_mount_dataJeff Layton2008-04-19
| | | | | | | | | | | | | | | Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS - fix potential NULL pointer dereference v2Cyrill Gorcunov2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | There is possible NULL pointer dereference if kstr[n]dup failed. So fix them for safety. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFSv4: Attempt to use machine credentials in SETCLIENTID callsTrond Myklebust2008-04-19
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFSv4: Reintroduce machine credsTrond Myklebust2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | We need to try to ensure that we always use the same credentials whenever we re-establish the clientid on the server. If not, the server won't recognise that we're the same client, and so may not allow us to recover state. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFSv4: Don't use cred->cr_ops->cr_name in nfs4_proc_setclientid()Trond Myklebust2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | With the recent change to generic creds, we can no longer use cred->cr_ops->cr_name to distinguish between RPCSEC_GSS principals and AUTH_SYS/AUTH_NULL identities. Replace it with the rpc_authops->au_name instead... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * nfs: fix printout of multiword bitfieldsFred Isaman2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Benny points out that zero-padding of multiword bitfields is necessary, and that delimiting each word is nice to avoid endianess confusion. bhalevy: without zero padding output can be ambiguous. Also, since the printed array of two 32-bit unsigned integers is not a 64-bit number, delimiting the output with a semicolon makes more sense. Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * nfs: return negative error value from nfs{,4}_stat_to_errnoBenny Halevy2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All use sites for nfs{,4}_stat_to_errno negate their return value. It's more efficient to return a negative error from the stat_to_errno convertors rather than negating its return value everywhere. This also produces slightly smaller code. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: Remove the buggy lock-if-signalled case from do_setlk()Trond Myklebust2008-04-19
| | | | | | | | | | | | | | | | | | | | | Both NLM and NFSv4 should be able to clean up adequately in the case where the user interrupts the RPC call... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFSv4: Ensure we don't corrupt fl->fl_flags in nfs4_proc_unlckTrond Myklebust2008-04-19
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFSv4: Only increment the sequence id if the server saw itTrond Myklebust2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is quite possible that the OPEN, CLOSE, LOCK, LOCKU,... compounds fail before the actual stateful operation has been executed (for instance in the PUTFH call). There is no way to tell from the overall status result which operations were executed from the COMPOUND. The fix is to move incrementing of the sequence id into the XDR layer, so that we do it as we process the results from the stateful operation. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFSv4: Remove bogus call to nfs4_drop_state_owner() in _nfs4_open_expired()Trond Myklebust2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | There should be no need to invalidate a perfectly good state owner just because of a stale filehandle. Doing so can cause the state recovery code to break, since nfs4_get_renew_cred() and nfs4_get_setclientid_cred() rely on finding active state owners. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: Ensure that rpc_run_task() errors are propagated back to the callerTrond Myklebust2008-04-19
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: Ensure that the write code cleans up properly when rpc_run_task() failsTrond Myklebust2008-04-19
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: Ensure that the read code cleans up properly when rpc_run_task() failsTrond Myklebust2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | In the case of readpage() we need to ensure that the pages get unlocked, and that the error is flagged. In the case of O_DIRECT, we need to ensure that the pages are all released. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: Fix nfs_wb_page() to always exit with an error or a clean pageTrond Myklebust2008-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is possible for nfs_wb_page() to sometimes exit with 0 return value, yet the page is left in a dirty state. For instance in the case where the server rebooted, and the COMMIT request failed, then all the previously "clean" pages which were cached by the server, but were not guaranteed to have been writted out to disk, have to be redirtied and resent to the server. The fix is to have nfs_wb_page_priority() check that the page is clean before it exits... This fixes a condition that triggers the BUG_ON(PagePrivate(page)) in nfs_create_request() when we're in the nfs_readpage() path. Also eliminate a redundant BUG_ON(!PageLocked(page)) while we're at it. It turns out that clear_page_dirty_for_io() has the exact same test. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: Always enable NFS direct I/OChuck Lever2008-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | Since O_DIRECT is a standard feature that is enabled in most distros, eliminate the CONFIG_NFS_DIRECTIO build option, and change the fs/nfs/Makefile to always build in the NFS direct I/O engine. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: Show most mount options via nfs_show_options()Chuck Lever2008-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | Display all mount options in /proc/mount which may be needed to reconstruct a previous mount. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: Save the values of the "mount*=" mount optionsChuck Lever2008-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Save the value of the mountproto= mountport= mountvers= and mountaddr= options so that these values can be displayed later via nfs_show_options(). This preserves the intent of the original mount options, should the file system need to be remounted based on what's displayed in /proc/mounts. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: Save the value of the "port=" mount optionChuck Lever2008-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During a remount based on the mount options displayed in /proc/mounts, we want to preserve the original behavior of the mount request. Let's save the original setting of the "port=" mount option in the mount's nfs_server structure. This allows us to simplify the default behavior of port setting for NFSv4 mounts: by default, NFSv2/3 mounts first try an RPC bind to determine the NFS server's port, unless the user specified the "port=" mount option; Users can force the client to skip the RPC bind by explicitly specifying "port=<value>". NFSv4, by contrast, assumes the NFS server port is 2049 and skips the RPC bind, unless the user specifies "port=". Users can force an RPC bind for NFSv4 by explicitly specifying "port=0". I added a couple of extra comments to clarify this behavior. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: Fix up data types of fields in nfs_parsed_mount_optionsChuck Lever2008-03-19
| | | | | | | | | | | | | | | | | | | | | | | | Clean up: make data types of fields in nfs_parsed_mount_options more consistent with other uses. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: numeric mount parameters are unsignedChuck Lever2008-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up: use %u instead of %d when displaying NFS mount options. Nit: Fix reporting of "namlen=" option in nfs_show_mount_stats. The mount option is called "namlen" without the "e". Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: clean up short packet handling for NFSv4 readdirJeff Layton2008-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the NFS readdir decoders have a workaround for buggy servers that send an empty readdir response with the EOF bit unset. If the server sends a malformed response in some cases, this workaround kicks in and just returns an empty response rather than returning a proper error to the caller. This patch does 3 things: 1) have malformed responses with no entries return error (-EIO) 2) preserve existing workaround for servers that send empty responses with the EOF marker unset. 3) Add some comments to clarify the logic in decode_readdir(). Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: clean up short packet handling for NFSv3 readdirJeff Layton2008-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the NFS readdir decoders have a workaround for buggy servers that send an empty readdir response with the EOF bit unset. If the server sends a malformed response in some cases, this workaround kicks in and just returns an empty response rather than returning a proper error to the caller. This patch does 3 things: 1) have malformed responses with no entries return error (-EIO) 2) preserve existing workaround for servers that send empty responses with the EOF marker unset. 3) Add some comments to clarify the logic in nfs3_xdr_readdirres(). Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * NFS: clean up short packet handling for NFSv2 readdirJeff Layton2008-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the NFS readdir decoders have a workaround for buggy servers that send an empty readdir response with the EOF bit unset. If the server sends a malformed response in some cases, this workaround kicks in and just returns an empty response rather than returning a proper error to the caller. This patch does 3 things: 1) have malformed responses with no entries return error (-EIO) 2) preserve existing workaround for servers that send empty responses with the EOF marker unset. 3) Add some comments to clarify the logic in nfs_xdr_readdirres(). Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * nfs: remove duplicate initializations of nfs_read_data fieldFred Isaman2008-03-19
| | | | | | | | | | | | | | | Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * nfs: nfs_redirty_requestFred2008-03-19
| | | | | | | | | | | | | | | | | | | | | | | | Both flush functions have the same error handling routine. Pull it out as a function. Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * Merge branch 'hotfixes' into develTrond Myklebust2008-03-19
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| | * | NFS: fix encode_fsinfo_maxszFred Isaman2008-03-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous value was not taking into account space for bitmap array size. Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * | SUNRPC: Add a helper rpcauth_lookup_generic_cred()Trond Myklebust2008-03-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The NFSv4 protocol allows clients to negotiate security protocols on the fly in the case where an administrator on the server changes the export settings and/or in the case where we may have a filesystem migration event. Instead of having the NFS client code cache credentials that are tied to a particular AUTH method it is therefore preferable to have a generic credential that can be converted into whatever AUTH is in use by the RPC client when the read/write/sillyrename/... is put on the wire. We do this by means of the new "generic" credential, which basically just caches the minimal information that is needed to look up an RPCSEC_GSS, AUTH_SYS, or AUTH_NULL credential. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * | Merge commit 'origin' into develTrond Myklebust2008-03-08
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