Changeset 39566 in vbox for trunk/src/VBox/Devices/Storage/VSCSI

Timestamp:

Dec 9, 2011 1:27:31 PM (13 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

75320

Message:

SCSI: Add support for readonly disks

File:

• trunk/src/VBox/Devices/Storage/VSCSI/VSCSILunSbc.cpp (modified) (2 diffs)

trunk/src/VBox/Devices/Storage/VSCSI/VSCSILunSbc.cpp

@@ -260 +260 @@
             aReply[3] = 0; /* Block descriptor length. */
 
+            if (pVScsiLun->fFeatures & VSCSI_LUN_FEATURE_READONLY)
+                aReply[2] |= RT_BIT(7); /* Set write protect bit */
+
             pu8ReplyPos = aReply + 4;
 
@@ -509 +512 @@
         {
             /* Enqueue new I/O request */
-            rc = vscsiIoReqTransferEnqueue(pVScsiLun, pVScsiReq, enmTxDir,
-                                           uLbaStart * 512, cSectorTransfer * 512);
+            if (   (   enmTxDir == VSCSIIOREQTXDIR_WRITE
+                    || enmTxDir == VSCSIIOREQTXDIR_FLUSH)
+                && (pVScsiLun->fFeatures & VSCSI_LUN_FEATURE_READONLY))
+                rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_DATA_PROTECT, SCSI_ASC_WRITE_PROTECTED, 0x00);
+            else
+                rc = vscsiIoReqTransferEnqueue(pVScsiLun, pVScsiReq, enmTxDir,
+                                               uLbaStart * 512, cSectorTransfer * 512);
         }
     }