[hpoussin] 65868: [NTOS:IOMGR] When booting from a ramdisk, always assign drive letter X: to it The only incomplete part to boot the LiveCD from PXE is some support in ramdisk.sys

Author: hpoussin
Date: Sun Dec 28 22:33:17 2014
New Revision: 65868

URL: http://svn.reactos.org/svn/reactos?rev=65868&view=rev
Log:
[NTOS:IOMGR] When booting from a ramdisk, always assign drive letter X: to it

The only incomplete part to boot the LiveCD from PXE is some support in ramdisk.sys

Modified:
    trunk/reactos/ntoskrnl/io/iomgr/ramdisk.c

Modified: trunk/reactos/ntoskrnl/io/iomgr/ramdisk.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/io/iomgr/ramdisk.c...
==============================================================================
--- trunk/reactos/ntoskrnl/io/iomgr/ramdisk.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/io/iomgr/ramdisk.c	[iso-8859-1] Sun Dec 28 22:33:17 2014
@@ -250,6 +250,25 @@
     }

//
+    // ReactOS hack (drive letter should not be hardcoded, and maybe set by mountmgr.sys)
+    //
+    {
+        ANSI_STRING AnsiPath;
+        CHAR Buffer[256];
+        UNICODE_STRING NtSystemRoot;
+        UNICODE_STRING DriveLetter = RTL_CONSTANT_STRING(L"\??\X:");
+
+        AnsiPath.Length = sprintf(Buffer, "X:%s", LoaderBlock->NtBootPathName);
+        AnsiPath.MaximumLength = AnsiPath.Length + 1;
+        AnsiPath.Buffer = Buffer;
+        RtlInitEmptyUnicodeString(&NtSystemRoot,
+                                  SharedUserData->NtSystemRoot,
+                                  sizeof(SharedUserData->NtSystemRoot));
+        RtlAnsiStringToUnicodeString(&NtSystemRoot, &AnsiPath, FALSE);
+        IoCreateSymbolicLink(&DriveLetter, &DeviceString);
+    }
+
+    //
     // We made it
     //
     return STATUS_SUCCESS;