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PROC_SCSI_WRITE(9) SCSI mid layer PROC_SCSI_WRITE(9)

NAME

proc_scsi_write - handle writes to /proc/scsi/scsi

SYNOPSIS

ssize_t proc_scsi_write(struct file * file, const char __user * buf, size_t length, loff_t * ppos);

ARGUMENTS

file
not used
buf
buffer to write
length
length of buf, at most PAGE_SIZE
ppos
not used

DESCRIPTION

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.

NOTE

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.

AUTHORS

James Bottomley <James.Bottomley@hansenpartnership.com>
Author.
Rob Landley <rob@landley.net>
Author.

COPYRIGHT

May 2018 Kernel Hackers Manual 3.16