dm ioctl: prevent empty message
authorAlasdair G Kergon <agk@redhat.com>
Tue, 2 Aug 2011 11:32:03 +0000 (12:32 +0100)
committerAlasdair G Kergon <agk@redhat.com>
Tue, 2 Aug 2011 11:32:03 +0000 (12:32 +0100)
Detect invalid empty messages in core dm instead of requiring every target to
check this.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>

No differences found