1 files changed, 128 insertions, 0 deletions
diff --git a/src/VBox/Devices/Storage/VSCSI/VSCSIVpdPagePool.cpp b/src/VBox/Devices/Storage/VSCSI/VSCSIVpdPagePool.cpp
new file mode 100644
index 00000000..dcf5dcfc
--- /dev/null
+++ b/src/VBox/Devices/Storage/VSCSI/VSCSIVpdPagePool.cpp
@@ -0,0 +1,128 @@
+/* $Id: VSCSIVpdPagePool.cpp $ */
+/** @file
+ * Virtual SCSI driver: VPD page pool
+ */
+
+/*
+ * Copyright (C) 2011-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define LOG_GROUP LOG_GROUP_VSCSI
+#include <VBox/log.h>
+#include <VBox/err.h>
+#include <iprt/mem.h>
+#include <iprt/assert.h>
+
+#include "VSCSIInternal.h"
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+
+/**
+ * A VSCSI VPD page.
+ */
+typedef struct VSCSIVPDPAGE
+{
+    /** List node. */
+    RTLISTNODE    NodePages;
+    /** Page size. */
+    size_t        cbPage;
+    /** Page data - variable size. */
+    uint8_t       abPage[1];
+} VSCSIVPDPAGE;
+/** Pointer to a VPD page. */
+typedef VSCSIVPDPAGE *PVSCSIVPDPAGE;
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+
+int vscsiVpdPagePoolInit(PVSCSIVPDPOOL pVScsiVpdPool)
+{
+    RTListInit(&pVScsiVpdPool->ListPages);
+    return VINF_SUCCESS;
+}
+
+
+void vscsiVpdPagePoolDestroy(PVSCSIVPDPOOL pVScsiVpdPool)
+{
+    PVSCSIVPDPAGE pIt, pItNext;
+
+    RTListForEachSafe(&pVScsiVpdPool->ListPages, pIt, pItNext, VSCSIVPDPAGE, NodePages)
+    {
+        RTListNodeRemove(&pIt->NodePages);
+        RTMemFree(pIt);
+    }
+}
+
+
+int vscsiVpdPagePoolAllocNewPage(PVSCSIVPDPOOL pVScsiVpdPool, uint8_t uPage, size_t cbPage, uint8_t **ppbPage)
+{
+    int rc = VINF_SUCCESS;
+    PVSCSIVPDPAGE pPage;
+
+    /* Check that the page doesn't exist already. */
+    RTListForEach(&pVScsiVpdPool->ListPages, pPage, VSCSIVPDPAGE, NodePages)
+    {
+        if (pPage->abPage[1] == uPage)
+            return VERR_ALREADY_EXISTS;
+    }
+
+    pPage = (PVSCSIVPDPAGE)RTMemAllocZ(RT_UOFFSETOF_DYN(VSCSIVPDPAGE, abPage[cbPage]));
+    if (pPage)
+    {
+        pPage->cbPage    = cbPage;
+        pPage->abPage[1] = uPage;
+        RTListAppend(&pVScsiVpdPool->ListPages, &pPage->NodePages);
+        *ppbPage = &pPage->abPage[0];
+    }
+    else
+        rc = VERR_NO_MEMORY;
+
+    return rc;
+}
+
+
+int vscsiVpdPagePoolQueryPage(PVSCSIVPDPOOL pVScsiVpdPool, PVSCSIREQINT pVScsiReq, uint8_t uPage)
+{
+    PVSCSIVPDPAGE pPage;
+
+    /* Check that the page doesn't exist already. */
+    RTListForEach(&pVScsiVpdPool->ListPages, pPage, VSCSIVPDPAGE, NodePages)
+    {
+        if (pPage->abPage[1] == uPage)
+        {
+            vscsiReqSetXferSize(pVScsiReq, pPage->cbPage);
+            RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, &pPage->abPage[0], pPage->cbPage);
+            return VINF_SUCCESS;
+        }
+    }
+
+    return VERR_NOT_FOUND;
+}
+