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由 Trond Myklebust 提交于
Use the EXCHGID4_FLAG_BIND_PRINC_STATEID exchange_id flag to enable stateid protection. This means that if we create a stateid using a particular principal, then we must use the same principal if we want to change that state. IOW: if we OPEN a file using a particular credential, then we have to use the same credential in subsequent OPEN_DOWNGRADE, CLOSE, or DELEGRETURN operations that use that stateid. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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