enum nvme_id_ctrl_nwpc - This field indicates the optional namespace write protection capabilities

NVME_CTRL_NWPC_WRITE_PROTECT If set, then the controller shall support the No Write Protect and Write Protect namespace write protection states and may support the Write Protect Until Power Cycle state and Permanent Write Protect namespace write protection states. NVME_CTRL_NWPC_WRITE_PROTECT_POWER_CYCLE If set, then the controller supports the Write Protect Until Power Cycle state. NVME_CTRL_NWPC_WRITE_PROTECT_PERMANENT If set, then the controller supports the Permanent Write Protect state. May 2025 enum nvme_id_ctrl_nwpc libnvme(2)

enum nvme_id_ctrl_nwpc - This field indicates the optional namespace write protection capabilities supported by the controller.

enum nvme_id_ctrl_nwpc { NVME_CTRL_NWPC_WRITE_PROTECT , NVME_CTRL_NWPC_WRITE_PROTECT_POWER_CYCLE , NVME_CTRL_NWPC_WRITE_PROTECT_PERMANENT };