.TH "nvme_io" 9 "nvme_io" "October 2024" "libnvme API manual" LINUX .SH NAME nvme_io \- Submit an nvme user I/O command .SH SYNOPSIS .B "int" nvme_io .BI "(struct nvme_io_args *args " "," .BI "__u8 opcode " ");" .SH ARGUMENTS .IP "args" 12 \fIstruct nvme_io_args\fP argument structure .IP "opcode" 12 Opcode to execute .SH "RETURN" The nvme command status if a response was received (see \fIenum nvme_status_field\fP) or -1 with errno set otherwise.