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NFS: add XDR decoder for mountd version 3 auth-flavor lists

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Introduce an xdr_stream-based XDR decoder that can unpack the auth-
flavor list returned in a MNT3 reply.

The nfs_mount() function's caller allocates an array, and passes the
size and a pointer to it.  The decoder decodes all the flavors it can
into the array, and returns the number of decoded flavors.

If the caller is not interested in the auth flavors, it can pass a
value of zero as the size of the pre-allocated array.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever
2009-06-17 18:02:12 -07:00
committed by Trond Myklebust
parent 4fdcd9966d
commit a14017db28
2 changed files with 43 additions and 0 deletions
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6
fs/nfs/internal.h
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@ -29,6 +29,12 @@ struct nfs_clone_mount {
rpc_authflavor_t authflavor;
};
/*
* Note: RFC 1813 doesn't limit the number of auth flavors that
* a server can return, so make something up.
*/
#define NFS_MAX_SECFLAVORS (12)
/*
* In-kernel mount arguments
*/