54 lines
2.4 KiB
Diff
54 lines
2.4 KiB
Diff
+++ src/VBox/Frontends/VBoxBFE/VBoxBFE.cpp
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@@ -158,6 +160,7 @@
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static bool g_fReleaseLog = true; /**< Set if we should open the release. */
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const char *g_pszProgressString;
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unsigned g_uProgressPercent = ~0U;
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+static bool g_fOverlay= false;
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/**
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@@ -715,6 +718,8 @@
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g_fCSAM = false;
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#endif /* VBOXSDL_ADVANCED_OPTIONS */
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/* just show the help screen */
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+ else if (strcmp(pszArg, "-overlay") == 0)
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+ g_fOverlay = true;
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else
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{
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SyntaxError("unrecognized argument '%s'\n", pszArg);
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@@ -1532,7 +1550,7 @@
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rc = CFGMR3InsertNode(pLunL0, "AttachedDriver", &pDrv); UPDATE_RC();
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rc = CFGMR3InsertString(pDrv, "Driver", "VD"); UPDATE_RC();
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rc = CFGMR3InsertNode(pDrv, "Config", &pCfg); UPDATE_RC();
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- rc = CFGMR3InsertString(pCfg, "Path", g_pszHdaFile); UPDATE_RC();
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+ rc = CFGMR3InsertString(pCfg, "Type", "HardDisk"); UPDATE_RC();
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if (g_fHdaSpf)
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{
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@@ -1541,13 +1559,23 @@
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else
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{
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char *pcExt = RTPathExt(g_pszHdaFile);
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- if ((pcExt) && (!strcmp(pcExt, ".vdi")))
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+ if ((pcExt) && (!strcmp(pcExt, ".vdi") && !g_fOverlay))
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{
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rc = CFGMR3InsertString(pCfg, "Format", "VDI"); UPDATE_RC();
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+ rc = CFGMR3InsertString(pCfg, "Path", g_pszHdaFile); UPDATE_RC();
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}
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else
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{
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- rc = CFGMR3InsertString(pCfg, "Format", "VMDK"); UPDATE_RC();
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+ /*
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+ * Use the overlay.vdi file to store differential changes.
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+ * Leave the VMDK file passed as argument unchanged.
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+ */
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+ PCFGMNODE pParent = 0;
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+ rc = CFGMR3InsertString(pCfg, "Format", "VDI"); UPDATE_RC();
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+ rc = CFGMR3InsertString(pCfg, "Path", "/ram/overlay.vdi"); UPDATE_RC();
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+ rc = CFGMR3InsertNode(pCfg, "Parent", &pParent); UPDATE_RC();
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+ rc = CFGMR3InsertString(pParent, "Format", "VDI"); UPDATE_RC();
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+ rc = CFGMR3InsertString(pParent, "Path", g_pszHdaFile); UPDATE_RC();
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}
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}
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}
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