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nfsd: pass client principal name in rsc downcall

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Two principals are involved in krb5 authentication: the target, who we
authenticate *to* (normally the name of the server, like
nfs/server.citi.umich.edu@CITI.UMICH.EDU), and the source, we we
authenticate *as* (normally a user, like bfields@UMICH.EDU)

In the case of NFSv4 callbacks, the target of the callback should be the
source of the client's setclientid call, and the source should be the
nfs server's own principal.

Therefore we allow svcgssd to pass down the name of the principal that
just authenticated, so that on setclientid we can store that principal
name with the new client, to be used later on callbacks.

Signed-off-by: Olga Kornievskaia <aglo@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Olga Kornievskaia
2008-12-23 16:17:15 -05:00
committed by Trond Myklebust
parent 34769fc488
commit 68e76ad0ba
4 changed files with 36 additions and 0 deletions
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include/linux/nfsd/state.h
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@@ -124,6 +124,7 @@ struct nfs4_client {
nfs4_verifier cl_verifier; /* generated by client */
time_t cl_time; /* time of last lease renewal */
__be32 cl_addr; /* client ipaddress */
char *cl_principal; /* setclientid principal name */
struct svc_cred cl_cred; /* setclientid principal */
clientid_t cl_clientid; /* generated by server */
nfs4_verifier cl_confirm; /* generated by server */