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  1. 29 Nov, 2013 1 commit
    • Andy Adamson's avatar
      SUNRPC handle EKEYEXPIRED in call_refreshresult · 14384c73
      Andy Adamson authored 
      commit eb96d5c9

 upstream.

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: default avatarAndy Adamson <andros@netapp.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
[bwh: Backported to 3.2:
 - Adjust context
 - Drop change to nfs4_handle_reclaim_lease_error()]
Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      14384c73
  3. 24 Mar, 2012 1 commit
  5. 20 Mar, 2012 1 commit
  7. 17 Mar, 2012 2 commits
    • Trond Myklebust's avatar
      NFSv4.1: Fix a few issues in filelayout_commit_pagelist · 9390f425
      Trond Myklebust authored 
      
- Fix a race in which NFS_I(inode)->commits_outstanding could potentially
  go to zero (triggering a call to nfs_commit_clear_lock()) before we're
  done sending out all the commit RPC calls.

- If nfs_commitdata_alloc fails, there is no reason why we shouldn't
  try to send off all the commits-to-ds.

- Simplify the error handling.

- Change pnfs_commit_list() to always return either
  PNFS_ATTEMPTED or PNFS_NOT_ATTEMPTED.
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
Cc: Fred Isaman <iisaman@netapp.com>
      9390f425
    • Trond Myklebust's avatar
      NFSv4.1: Clean ups and bugfixes for the pNFS read/writeback/commit code · 8dd37758
      Trond Myklebust authored 
      
Move more pnfs-isms out of the generic commit code.

Bugfixes:

- filelayout_scan_commit_lists doesn't need to get/put the lseg.
  In fact since it is run under the inode->i_lock, the lseg_put()
  can deadlock.

- Ensure that we distinguish between what needs to be done for
  commit-to-data server and what needs to be done for commit-to-MDS
  using the new flag PG_COMMIT_TO_DS. Otherwise we may end up calling
  put_lseg() on a bucket for a struct nfs_page that got written
  through the MDS.

- Fix a case where we were using list_del() on an nfs_page->wb_list
  instead of list_del_init().

- filelayout_initiate_commit needs to call filelayout_commit_release
  on error instead of the mds_ops->rpc_release(). Otherwise it won't
  clear the commit lock.

Cleanups:

- Let the files layout manage the commit lists for the pNFS case.
  Don't expose stuff like pnfs_choose_commit_list, and the fact
  that the commit buckets hold references to the layout segment
  in common code.

- Cast out the put_lseg() calls for the struct nfs_read/write_data->lseg
  into the pNFS layer from whence they came.

- Let the pNFS layer manage the NFS_INO_PNFS_COMMIT bit.
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
Cc: Fred Isaman <iisaman@netapp.com>
      8dd37758
  9. 11 Mar, 2012 1 commit
    • Trond Myklebust's avatar
      NFS: Fix a number of sparse warnings · 17280175
      Trond Myklebust authored 
      
Fix a number of "warning: symbol 'foo' was not declared. Should it be
static?" conditions.

Fix 2 cases of "warning: Using plain integer as NULL pointer"

fs/nfs/delegation.c:263:31: warning: restricted fmode_t degrades to integer
  - We want to allow upgrades to a WRITE delegation, but should otherwise
    consider servers that hand out duplicate delegations to be borken.
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
      17280175
  11. 10 Mar, 2012 1 commit
  13. 08 Mar, 2012 1 commit
  15. 07 Mar, 2012 1 commit
  17. 17 Feb, 2012 1 commit
  19. 06 Feb, 2012 2 commits
  21. 01 Feb, 2012 1 commit
  23. 05 Jan, 2012 1 commit
  25. 31 Oct, 2011 2 commits
  27. 19 Oct, 2011 1 commit
  29. 18 Oct, 2011 1 commit
  31. 31 Jul, 2011 1 commit
  33. 15 Jul, 2011 4 commits
  35. 12 Jul, 2011 6 commits
  37. 28 Jun, 2011 1 commit
  39. 20 Jun, 2011 1 commit
  41. 15 Jun, 2011 1 commit
  43. 29 May, 2011 8 commits
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