[stgt] [PATCH] Implement Prevent/AllowMediumRemoval for MMC devices

[ronnie sahlberg]

List, Tomo,

Please find attach an experimental patch to add
Prevent/AllowMediumRemoval emulation for MMC style devices.

For MMC style devices we use the "Offline" attribute to represent "no
media loaded".
If an initiator has set the "Prevent" bit via the
Prevent/AllowMediumRemoval CDB we will not allow
tgtadm to change the device to offline, instead it will fail with a
new error code.

Similarly, if an initiator sends a Start/StopUnit CDB requesting the
media to be ejected.
If the Prevent bit is set we will fail this with a check-condition.



Comments?

regards
ronnie sahlberg
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