linux.git/net/sunrpc, branch v3.8-rc2

Merge branch 'for-3.8' of git://linux-nfs.org/~bfields/linux

2012-12-20T22:04:11+00:00

Pull nfsd update from Bruce Fields:
 "Included this time:

   - more nfsd containerization work from Stanislav Kinsbursky: we're
     not quite there yet, but should be by 3.9.

   - NFSv4.1 progress: implementation of basic backchannel security
     negotiation and the mandatory BACKCHANNEL_CTL operation.  See

       http://wiki.linux-nfs.org/wiki/index.php/Server_4.0_and_4.1_issues

     for remaining TODO's

   - Fixes for some bugs that could be triggered by unusual compounds.
     Our xdr code wasn't designed with v4 compounds in mind, and it
     shows.  A more thorough rewrite is still a todo.

   - If you've ever seen "RPC: multiple fragments per record not
     supported" logged while using some sort of odd userland NFS client,
     that should now be fixed.

   - Further work from Jeff Layton on our mechanism for storing
     information about NFSv4 clients across reboots.

   - Further work from Bryan Schumaker on his fault-injection mechanism
     (which allows us to discard selective NFSv4 state, to excercise
     rarely-taken recovery code paths in the client.)

   - The usual mix of miscellaneous bugs and cleanup.

  Thanks to everyone who tested or contributed this cycle."

* 'for-3.8' of git://linux-nfs.org/~bfields/linux: (111 commits)
  nfsd4: don't leave freed stateid hashed
  nfsd4: free_stateid can use the current stateid
  nfsd4: cleanup: replace rq_resused count by rq_next_page pointer
  nfsd: warn on odd reply state in nfsd_vfs_read
  nfsd4: fix oops on unusual readlike compound
  nfsd4: disable zero-copy on non-final read ops
  svcrpc: fix some printks
  NFSD: Correct the size calculation in fault_inject_write
  NFSD: Pass correct buffer size to rpc_ntop
  nfsd: pass proper net to nfsd_destroy() from NFSd kthreads
  nfsd: simplify service shutdown
  nfsd: replace boolean nfsd_up flag by users counter
  nfsd: simplify NFSv4 state init and shutdown
  nfsd: introduce helpers for generic resources init and shutdown
  nfsd: make NFSd service structure allocated per net
  nfsd: make NFSd service boot time per-net
  nfsd: per-net NFSd up flag introduced
  nfsd: move per-net startup code to separated function
  nfsd: pass net to __write_ports() and down
  nfsd: pass net to nfsd_set_nrthreads()
  ...

nfsd4: cleanup: replace rq_resused count by rq_next_page pointer

2012-12-18T03:00:16+00:00

It may be a matter of personal taste, but I find this makes the code
clearer.

Signed-off-by: J. Bruce Fields

svcrpc: fix some printks

2012-12-17T21:02:40+00:00

Reported-by: kbuild test robot 
Signed-off-by: J. Bruce Fields

SUNRPC: continue run over clients list on PipeFS event instead of break

2012-12-17T17:19:16+00:00

There are SUNRPC clients, which program doesn't have pipe_dir_name. These
clients can be skipped on PipeFS events, because nothing have to be created or
destroyed. But instead of breaking in case of such a client was found, search
for suitable client over clients list have to be continued. Otherwise some
clients could not be covered by PipeFS event handler.

Signed-off-by: Stanislav Kinsbursky 
Cc: stable@vger.kernel.org [>= v3.4]
Signed-off-by: Trond Myklebust

SUNRPC: variable 'svsk' is unused in function bc_send_request

2012-12-15T22:05:57+00:00

Silence a compile time warning.

Signed-off-by: Trond Myklebust

SUNRPC: Handle ECONNREFUSED in xs_local_setup_socket

2012-12-15T22:02:29+00:00

Silence the unnecessary warning "unhandled error (111) connecting to..."
and convert it to a dprintk for debugging purposes.

Signed-off-by: Trond Myklebust

SUNRPC handle EKEYEXPIRED in call_refreshresult

2012-12-12T20:36:02+00:00

Currently, when an RPCSEC_GSS context has expired or is non-existent
and the users (Kerberos) credentials have also expired or are non-existent,
the client receives the -EKEYEXPIRED error and tries to refresh the context
forever.  If an application is performing I/O, or other work against the share,
the application hangs, and the user is not prompted to refresh/establish their
credentials. This can result in a denial of service for other users.

Users are expected to manage their Kerberos credential lifetimes to mitigate
this issue.

Move the -EKEYEXPIRED handling into the RPC layer. Try tk_cred_retry number
of times to refresh the gss_context, and then return -EACCES to the application.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

SUNRPC set gss gc_expiry to full lifetime

2012-12-12T20:35:59+00:00

Only use the default GSSD_MIN_TIMEOUT if the gss downcall timeout is zero.
Store the full lifetime in gc_expiry (not 3/4 of the lifetime) as subsequent
patches will use the gc_expiry to determine buffered WRITE behavior in the
face of expired or soon to be expired gss credentials.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

Merge branch 'bugfixes' into nfs-for-next

2012-12-11T14:16:26+00:00

SUNRPC: remove redundant "linux/nsproxy.h" includes

2012-12-10T21:25:30+00:00

This is a cleanup patch.

Signed-off-by: Stanislav Kinsbursky 
Signed-off-by: J. Bruce Fields