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NFSv4.1: nfs4_opendata_check_deleg needs to handle NFS4_OPEN_CLAIM_DELEG_CUR_FH
We need to warn against broken NFSv4.1 servers that try to hand out delegations in response to NFS4_OPEN_CLAIM_DELEG_CUR_FH. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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1 changed files with 8 additions and 2 deletions
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@ -1458,12 +1458,18 @@ nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state)
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if (delegation)
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delegation_flags = delegation->flags;
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rcu_read_unlock();
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if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) {
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switch (data->o_arg.claim) {
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default:
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break;
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case NFS4_OPEN_CLAIM_DELEGATE_CUR:
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case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
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pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
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"returning a delegation for "
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"OPEN(CLAIM_DELEGATE_CUR)\n",
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clp->cl_hostname);
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} else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
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return;
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}
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if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
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nfs_inode_set_delegation(state->inode,
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data->owner->so_cred,
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&data->o_res);
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