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SUNRPC: introduce RPC_TASK_NULLCREDS to request auth_none

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In almost all cases the credential stored in rpc_message.rpc_cred
is a "generic" credential.  One of the two expections is when an
AUTH_NULL credential is used such as for RPC ping requests.

To improve consistency, don't pass an explicit credential in
these cases, but instead pass NULL and set a task flag,
similar to RPC_TASK_ROOTCREDS, which requests that NULL credentials
be used by default.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
NeilBrown 2018-12-03 11:30:30 +11:00 • committed by Anna Schumaker
parent 5e16923b43
commit a68a72e135
3 changed files with 9 additions and 13 deletions
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2
net/sunrpc/auth.c
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@ -761,6 +761,8 @@ rpcauth_bindcred(struct rpc_task *task, struct rpc_cred *cred, int flags)
;
else if (cred == &machine_cred || (flags & RPC_TASK_ROOTCREDS))
new = rpcauth_bind_root_cred(task, lookupflags);
else if (flags & RPC_TASK_NULLCREDS)
new = authnull_ops.lookup_cred(NULL, NULL, 0);
else
new = rpcauth_bind_new_cred(task, lookupflags);
if (IS_ERR(new))