Handle writes to /proc/scsi/scsi
ssize_t proc_scsi_write(struct file * file, const char __user * buf, size_t length, loff_t * ppos);
file
not used
buf
buffer to write
length
length of buf, at most PAGE_SIZE
ppos
not used
this provides a legacy mechanism to add or remove devices by Host, Channel, ID, and Lun. To use, “echo 'scsi add-single-device 0 1 2 3' > /proc/scsi/scsi” or “echo 'scsi remove-single-device 0 1 2 3' > /proc/scsi/scsi” with “0 1 2 3” replaced by the Host, Channel, Id, and Lun.
this seems to be aimed at parallel SCSI. Most modern busses (USB, SATA, Firewire, Fibre Channel, etc) dynamically assign these values to provide a unique identifier and nothing more.