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author | Andy Adamson <andros@netapp.com> | 2012-11-27 15:34:19 (GMT) |
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committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-12-12 20:36:02 (GMT) |
commit | eb96d5c97b0825d542e9c4ba5e0a22b519355166 (patch) | |
tree | 62c98e2bdbcc7334a7043725d1fd81a589a75177 /COPYING | |
parent | 620038f6d2304475dce800dc5c75fc335a19613a (diff) | |
download | linux-fsl-qoriq-eb96d5c97b0825d542e9c4ba5e0a22b519355166.tar.xz |
SUNRPC handle EKEYEXPIRED in call_refreshresult
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 <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'COPYING')
0 files changed, 0 insertions, 0 deletions