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2014-05-06nfsd: remove <linux/nfsd/debug.h>Christoph Hellwig
There is almost nothing left it in, just merge it into the only file that includes it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-05-06nfsd: move <linux/nfsd/stats.h> to fs/nfsdChristoph Hellwig
There are no legitimate users outside of fs/nfsd, so move it there. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-05-06nfsd: move <linux/nfsd/export.h> to fs/nfsdChristoph Hellwig
There are no legitimate users outside of fs/nfsd, so move it there. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-05-06nfsd: remove <linux/nfsd/nfsfh.h>Christoph Hellwig
The only real user of this header is fs/nfsd/nfsfh.h, so merge the two. Various lockѕ source files used it to indirectly get other sunrpc or nfs headers, so fix those up. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2013-02-13nfsd: Store ex_anon_uid and ex_anon_gid as kuids and kgidsEric W. Biederman
Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2012-10-17UAPI: Remove empty non-UAPI Kbuild filesDavid Howells
Remove non-UAPI Kbuild files that have become empty as a result of UAPI disintegration. They used to have only header-y lines in them and those have now moved to the Kbuild files in the corresponding uapi/ directories. Possibly these should not be removed but rather have a comment inserted to say they are intentionally left blank. This would make it easier to add generated header lines in future without having to restore the infrastructure. Note that at this point not all the UAPI disintegration parts have been merged, so it is likely that more empty Kbuild files will turn up. It is probably necessary to make the files non-empty to prevent the patch program from automatically deleting them when it reduces them to nothing. Signed-off-by: David Howells <dhowells@redhat.com>
2012-10-09UAPI: (Scripted) Disintegrate include/linux/nfsdDavid Howells
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-07-31nfsd: Push mnt_want_write() outside of i_mutexJan Kara
When mnt_want_write() starts to handle freezing it will get a full lock semantics requiring proper lock ordering. So push mnt_want_write() call consistently outside of i_mutex. CC: linux-nfs@vger.kernel.org CC: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-31Merge branch 'for-3.5-take-2' of git://linux-nfs.org/~bfields/linuxLinus Torvalds
Pull nfsd update from Bruce Fields. * 'for-3.5-take-2' of git://linux-nfs.org/~bfields/linux: (23 commits) nfsd: trivial: use SEEK_SET instead of 0 in vfs_llseek SUNRPC: split upcall function to extract reusable parts nfsd: allocate id-to-name and name-to-id caches in per-net operations. nfsd: make name-to-id cache allocated per network namespace context nfsd: make id-to-name cache allocated per network namespace context nfsd: pass network context to idmap init/exit functions nfsd: allocate export and expkey caches in per-net operations. nfsd: make expkey cache allocated per network namespace context nfsd: make export cache allocated per network namespace context nfsd: pass pointer to export cache down to stack wherever possible. nfsd: pass network context to export caches init/shutdown routines Lockd: pass network namespace to creation and destruction routines NFSd: remove hard-coded dereferences to name-to-id and id-to-name caches nfsd: pass pointer to expkey cache down to stack wherever possible. nfsd: use hash table from cache detail in nfsd export seq ops nfsd: pass svc_export_cache pointer as private data to "exports" seq file ops nfsd: use exp_put() for svc_export_cache put nfsd: use cache detail pointer from svc_export structure on cache put nfsd: add link to owner cache detail to svc_export structure nfsd: use passed cache_detail pointer expkey_parse() ...
2012-04-16nfsd: include cld.h in the headers_install targetJeff Layton
The cld.h file contains the definition of the upcall format to talk with nfsdcld. When I added the file though, I neglected to add it to the headers-y target, so make headers_install wasn't installing it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-04-12nfsd: make expkey cache allocated per network namespace contextStanislav Kinsbursky
This patch also changes svcauth_unix_purge() function: added network namespace as a parameter and thus loop over all networks was replaced by only one call for ip map cache purge. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-04-12nfsd: make export cache allocated per network namespace contextStanislav Kinsbursky
This patch also changes prototypes of nfsd_export_flush() and exp_rootfh(): network namespace parameter added. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-04-11nfsd: pass network context to export caches init/shutdown routinesStanislav Kinsbursky
These functions will be called from per-net operations. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-04-11nfsd: use cache detail pointer from svc_export structure on cache putStanislav Kinsbursky
Hard-coded pointer is redundant now and can be replaced. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-04-11nfsd: add link to owner cache detail to svc_export structureStanislav Kinsbursky
Without info about owner cache datail it won't be able to find out, which per-net cache detail have to be. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-03-26nfsd: add a header describing upcall to nfsdcldJeff Layton
The daemon takes a versioned binary struct. Hopefully this should allow us to revise the struct later if it becomes necessary. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-09-13NFSD: Remove the ex_pathname field from struct svc_exportTrond Myklebust
There are no more users... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-09-13NFSD: Cleanup for nfsd4_path()Trond Myklebust
The current code is sort of hackish in that it assumes a referral is always matched to an export. When we add support for junctions that may not be the case. We can replace nfsd4_path() with a function that encodes the components directly from the dentries. Since nfsd4_path is currently the only user of the 'ex_pathname' field in struct svc_export, this has the added benefit of allowing us to get rid of that. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-08-31nfsd: remove include/linux/nfsd/syscall.hJ. Bruce Fields
We don't need this any more. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-08-26Remove include/linux/nfsd/const.hJ. Bruce Fields
Userspace shouldn't have a use for these constants. Nothing here is used outside fs/nfsd. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-08-26nfsd: remove unused definesJ. Bruce Fields
At least one of these is actually wrong anyway. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-07-15nfsd: Remove deprecated nfsctl system call and related code.NeilBrown
As promised in feature-removal-schedule.txt it is time to remove the nfsctl system call. Userspace has perferred to not use this call throughout 2.6 and it has been excluded in the default configuration since 2.6.36 (9 months ago). So this patch removes all the code that was being compiled out. There are still references to sys_nfsctl in various arch systemcall tables and related code. These should be cleaned out too, probably in the next merge window. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-01-13nfsd: don't support msnfs export optionJ. Bruce Fields
We've long had these pointless #ifdef MSNFS's sprinkled throughout the code--pointless because MSNFS is always defined (and we give no config option to make that easy to change). So we could just remove the ifdef's and compile the resulting code unconditionally. But as long as we're there: why not just rip out this code entirely? The only purpose is to implement the "msnfs" export option which turns on Windows-like behavior in some cases, and: - the export option isn't documented anywhere; - the userland utilities (which would need to be able to parse "msnfs" in an export file) don't support it; - I don't know how to maintain this, as I don't know what the proper behavior is; and - google shows no evidence that anyone has ever used this. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-08-14include: replace unifdef-y with header-ySam Ravnborg
unifdef-y and header-y has same semantic. So there is no need to have both. Drop the unifdef-y variant and sort all lines again Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2010-05-03nfsd: further comment typosJ. Bruce Fields
Whoops, missed some more. "Reviewed-by, I guess": Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2010-04-22nfsd4: fix filehandle commentJ. Bruce Fields
Minor typos. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-15nfsd: move most of nfsfh.h to fs/nfsdJ. Bruce Fields
Most of this can be trivially moved to a private header as well. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-15nfsd: enable V4ROOT exportsJ. Bruce Fields
With the v4root option now enforced everywhere it should be, it is safe to advertise support for it to mountd. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-15nfsd: introduce export flag for v4 pseudorootSteve Dickson
NFSv4 differs from v2 and v3 in that it presents a single unified filesystem tree, whereas v2 and v3 exported multiple filesystem (whose roots could be found using a separate mount protocol). Our original NFSv4 server implementation asked the administrator to designate a single filesystem as the NFSv4 root, then to mount filesystems they wished to export underneath. (Often using bind mounts of already-existing filesystems.) This was conceptually simple, and allowed easy implementation, but created a serious obstacle to upgrading between v2/v3: since the paths to v4 filesystems were different, administrators would have to adjust all the paths in client-side mount commands when switching to v4. Various workarounds are possible. For example, the administrator could export "/" and designate it as the v4 root. However, the security risks of that approach are obvious, and in any case we shouldn't be requiring the administrator to take extra steps to fix this problem; instead, the server should present consistent paths across different versions by default. These patches take a modified version of that approach: we provide a new export option which exports only a subset of a filesystem. With this flag, it becomes safe for mountd to export "/" by default, with no need for additional configuration. We begin just by defining the new flag. Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-14nfsd: let "insecure" flag vary by pseudoflavorJ. Bruce Fields
This was an oversight; it should be among the export flags that can be allowed to vary by pseudoflavor. This allows an administrator to (for example) allow auth_sys mounts only from low ports, but allow auth_krb5 mounts to use any port. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-14nfsd: new interface to advertise export featuresJ. Bruce Fields
Soon we will add the new V4ROOT flag, and allow the INSECURE flag to vary by pseudoflavor. It would be useful for nfs-utils (for example, for improved exportfs error reporting) to be able to know when this happens. Use this new interface for that purpose. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-14nfsd: Move private headers to source directoryBoaz Harrosh
Lots of include/linux/nfsd/* headers are only used by nfsd module. Move them to the source directory Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-14nfsd: Headers Independence and include cleanupsBoaz Harrosh
* Add includes that are directly used by headers * Remove includes that are not needed These are the changes made: [xdr.h] struct nfsd_readdirres has an embedded struct readdir_cd from nfsd.h fixing that we can drop other includes [xdr4.h] embedded types defined both at state.h and nfsd.h [syscall.h] After export.h fix none of these stuff is needed. fix extra space in # include <> statement [stats.h] does not need <linux/nfs4.h> but was export to user-mode so I don't touch it [state.h] embedded types from nfsfh.h like struct knfsd_fh. bringing that eliminates the need for all other includes [nfsfh.h] directly manipulating types from sunrpc/svc.h. Removed Other unused headers. [nfsd.h] removed unused headers include [export.h] lots of sunrpc/svc.h types and a single prototype declaration with pointer from nfsfh.h, but all users of export.h do need nfsfh.h any way. remove now un-needed include. [const.h] Unfixed (not independent) [cache.h] could do with a forward declaration of "struct svc_rqst;" from sunrpc/svc.h but all users absolutely will need sunrpc/svc.h it is easier overall this way. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-14nfsd: Remove unused dprintkBoaz Harrosh
This doesn't appear to be useful. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-11-13nfsd: make fs/nfsd/vfs.h for common includesJ. Bruce Fields
None of this stuff is used outside nfsd, so move it out of the common linux include directory. Actually, probably none of the stuff in include/linux/nfsd/nfsd.h really belongs there, so later we may remove that file entirely. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-11-05nfsd: use STATEID_FMT and STATEID_VAL for printing stateidsBenny Halevy
Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-23seq_file: constify seq_operationsJames Morris
Make all seq_operations structs const, to help mitigate against revectoring user-triggerable function pointers. This is derived from the grsecurity patch, although generated from scratch because it's simpler than extracting the changes from there. Signed-off-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-17nfsd: return success for non-NFS4 nfs4_state_startStephen Rothwell
Today's linux-next build (sparc64_defconfig) failed like this: In file included from arch/sparc/kernel/sys_sparc32.c:32: include/linux/nfsd/nfsd.h: In function 'nfs4_state_start': include/linux/nfsd/nfsd.h:177: error: no return statement in function returning non-void Caused by commit 29ab23cc5d351658d01a4327d55e9106a73fd04f ("nfsd4: allow nfs4 state startup to fail"). Please, if you add code that depends on a CONFIG option, build with that option enabled and disabled. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-15nfsd41: Backchannel: Setup sequence informationRicardo Labiaga
Follows the model used by the NFS client. Setup the RPC prepare and done function pointers so that we can populate the sequence information if minorversion == 1. rpc_run_task() is then invoked directly just like existing NFS client operations do. nfsd4_cb_prepare() determines if the sequence information needs to be setup. If the slot is in use, it adds itself to the wait queue. nfsd4_cb_done() wakes anyone sleeping on the callback channel wait queue after our RPC reply has been received. It also sets the task message result pointer to NULL to clearly indicate we're done using it. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> [define and initialize cl_cb_seq_nr here] [pulled out unused defintion of nfsd4_cb_done] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-15nfsd41: Backchannel: Server backchannel RPC wait queueRicardo Labiaga
RPC callback requests will wait on this wait queue if the backchannel is out of slots. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-15nfsd41: Backchannel: Add sequence arguments to callback RPC argumentsRicardo Labiaga
Follow the model we use in the client. Make the sequence arguments part of the regular RPC arguments. None of the callbacks that are soon to be implemented expect results that need to be passed back to the caller, so we don't define a separate RPC results structure. For session validation, the cb_sequence decoding will use a pointer to the sequence arguments that are part of the RPC argument. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> [define struct nfsd4_cb_sequence here] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-15nfsd41: Backchannel: callback infrastructureAndy Adamson
Keep the xprt used for create_session in cl_cb_xprt. Mark cl_callback.cb_minorversion = 1 and remember the client provided cl_callback.cb_prog rpc program number. Use it to probe the callback path. Use the client's network address to initialize as the callback's address as expected by the xprt creation routines. Define xdr sizes and code nfs4_cb_compound header to be able to send a null callback rpc. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> [get callback minorversion from fore channel's] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: change bc_sock to bc_xprt] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pulled definition for cl_cb_xprt] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: set up backchannel's cb_addr] [moved rpc_create_args init to "nfsd: modify nfsd4.1 backchannel to use new xprt class"] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-15nfsd4: use common rpc_cred for all callbacksJ. Bruce Fields
Callbacks are always made using the machine's identity, so we can use a single auth_generic credential shared among callbacks to all clients and let the rpc code take care of the rest. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-15nfsd4: allow nfs4 state startup to failJ. Bruce Fields
The failure here is pretty unlikely, but we should handle it anyway. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-01nfsd41: replace page based DRC with buffer based DRCAndy Adamson
Use NFSD_SLOT_CACHE_SIZE size buffers for sessions DRC instead of holding nfsd pages in cache. Connectathon testing has shown that 1024 bytes for encoded compound operation responses past the sequence operation is sufficient, 512 bytes is a little too small. Set NFSD_SLOT_CACHE_SIZE to 1024. Allocate memory for the session DRC in the CREATE_SESSION operation to guarantee that the memory resource is available for caching responses. Allocate each slot individually in preparation for slot table size negotiation. Remove struct nfsd4_cache_entry and helper functions for the old page-based DRC. The iov_len calculation in nfs4svc_encode_compoundres is now always correct. Replay is now done in nfsd4_sequence under the state lock, so the session ref count is only bumped on non-replay. Clean up the nfs4svc_encode_compoundres session logic. The nfsd4_compound_state statp pointer is also not used. Remove nfsd4_set_statp(). Move useful nfsd4_cache_entry fields into nfsd4_slot. Signed-off-by: Andy Adamson <andros@netapp.com Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-01nfsd41: bound forechannel drc size by memory usageAndy Adamson
By using the requested ca_maxresponsesize_cached * ca_maxresponses to bound a forechannel drc request size, clients can tailor a session to usage. For example, an I/O session (READ/WRITE only) can have a much smaller ca_maxresponsesize_cached (for only WRITE compound responses) and a lot larger ca_maxresponses to service a large in-flight data window. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-08-28nfsd41: expand solo sequence checkAndy Adamson
Compounds consisting of only a sequence operation don't need any additional caching beyond the sequence information we store in the slot entry. Fix nfsd4_is_solo_sequence to identify this case correctly. The additional check for a failed sequence in nfsd4_store_cache_entry() is redundant, since the nfsd4_is_solo_sequence call lower down catches this case. The final ce_cachethis set in nfsd4_sequence is also redundant. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-08-21nfsd: convert nfs4_cb_conn struct to hold address in sockaddr_storageJeff Layton
...rather than as a separate address and port fields. This will be necessary for implementing callbacks over IPv6. Also, convert gen_callback to use the standard rpcuaddr2sockaddr routine rather than its own private one. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-08-21nfsd: make nfs4_client->cl_addr a struct sockaddr_storageJeff Layton
It's currently a __be32, which isn't big enough to hold an IPv6 address. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>