nvme_get_nsid - Retrieve the NSID from a namespace file descriptor

fd File descriptor of nvme namespace nsid User pointer to namespace id

This should only be sent to namespace handles, not to controllers. The kernel's interface returns the nsid as the return value. This is unfortunate for many architectures that are incapable of allowing distinguishing a namespace id > 0x80000000 from a negative error number.

nvme_get_nsid - Retrieve the NSID from a namespace file descriptor

0 if nsid was set successfully or -1 with errno set otherwise. May 2025 nvme_get_nsid nvme_get_nsid(2)