DOKK / manpages / debian 12 / libnvme-dev / nvme_get_features_host_id.2.en
nvme_get_features_host_id(2) libnvme API manual nvme_get_features_host_id(2)

nvme_get_features_host_id - Get host id feature

int nvme_get_features_host_id (int fd , enum nvme_get_features_sel sel , bool exhid , __u32 len , __u8 *hostid );

File descriptor of nvme device
Select which type of attribute to return, see enum nvme_get_features_sel
Enable Extended Host Identifier
Length of hostid
Buffer for returned host ID

The nvme command status if a response was received (see enum nvme_status_field) or -1 with errno set otherwise.

nvme_get_features_host_id January 2023