Add a sense subcommand to camcontrol(8)

[ken]

Summary

This adds a sense subcommand to camcontrol.

There are situations where sending a REQUEST SENSE command to a device can yield helpful information. And sometimes it is necessary to do that without sending a TEST UNIT READY and getting autosense back.

blackpearl:/usr/home/kenm:!:0} camcontrol sense da10
(pass1:mps0:0:20:0): SCSI status: OK
(pass1:mps0:0:20:0): SCSI sense: NOT READY asc:4,4 (Logical unit not ready, format in progress)
(pass1:mps0:0:20:0): Progress: 4% (2946/65536) complete

sm4u-1-mgmt:/usr/home/kenm:!:0} camcontrol sense da1
(pass1:mps0:0:9:0): SCSI status: OK
(pass1:mps0:0:9:0): SCSI sense: NO SENSE asc:5e,5 (Idle-B condition activated by timer)

[mav]

sbin/camcontrol/camcontrol.c

941–942

It seems the status here will always be "OK". Not sure it worth printing. Plus it is confusing, since the original command that could produce the sense data without autosensing would likely return a "Check Condition".

[ken]

sbin/camcontrol/camcontrol.c

941–942

Good point, I agree it would be confusing.