From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Wed, 10 Aug 2011 07:59:58 +0000 (-0700)
Subject: target: Add missing DATA_SG_IO transport_cmd_get_valid_sectors check
X-Git-Tag: v3.1-rc4~43^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01cde4d54327884a0b61ce8666092f5703557d4b;p=pandora-kernel.git

target: Add missing DATA_SG_IO transport_cmd_get_valid_sectors check

This patch adds the missing transport_cmd_get_valid_sectors() check for
SCF_SCSI_DATA_SG_IO_CDB type payloads to ensure that a received LBA + range
does not exeed past the end of associated backend struct se_device.

This patch also fixes a bug in the failure path of transport_new_cmd_obj()
where this check can fail, so change to use a signed 'rc' and return '-EINVAL'
to signal proper transport_generic_request_failure() handling.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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