int nvme_identify_ns (int fd , __u32 nsid , struct nvme_id_ns *ns );
File descriptor of nvme device
Namespace to identify
User space destination address to transfer the data
If the Namespace Identifier (NSID) field specifies an active NSID, then the Identify Namespace data structure is returned to the host for that specified namespace.
If the controller supports the Namespace Management capability and the NSID field is set to NVME_NSID_ALL, then the controller returns an Identify Namespace data structure that specifies capabilities that are common across namespaces for this controller.
See struct nvme_id_ns for details on the structure returned.
The nvme command status if a response was received (see enum nvme_status_field) or -1 with errno set otherwise.