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nfsd: allow DELEGRETURN on directories

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As Trond pointed out: "...provided that the presented stateid is
actually valid, it is also sufficient to uniquely identify the file to
which it is associated (see RFC8881 Section 8.2.4), so the filehandle
should be considered mostly irrelevant for operations like DELEGRETURN."

Don't ask fh_verify to filter on file type.

Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20251111-dir-deleg-ro-v6-15-52f3feebb2f2@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Jeff Layton 2025-11-11 09:12:56 -05:00 committed by Christian Brauner
parent 544a0ee152
commit 80c8afddc8
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1 changed files with 2 additions and 1 deletions
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3
fs/nfsd/nfs4state.c
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@ -7828,7 +7828,8 @@ nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
__be32 status;
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
status = fh_verify(rqstp, &cstate->current_fh, 0, 0);
if (status)
return status;
status = nfsd4_lookup_stateid(cstate, stateid, SC_TYPE_DELEG, SC_STATUS_REVOKED, &s, nn);