Allow raw read request in xiso driver

ergo720 · Aug 13, 2024 · f56690f · f56690f
1 parent 82bf3f3
commit f56690f
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Showing 3 changed files with 8 additions and 3 deletions.
diff --git a/nboxkrnl/io/cdrom/xiso.cpp b/nboxkrnl/io/cdrom/xiso.cpp
@@ -501,9 +501,10 @@ static NTSTATUS XBOXAPI XisoIrpRead(PDEVICE_OBJECT DeviceObject, PIRP Irp)
 	}
 
 	if (FileInfo->Flags & XISO_VOLUME_FILE) {
-		// We can't support the volume itself, because there's no dvd image on the host side
-
-		return XisoCompleteRequest(Irp, STATUS_IO_DEVICE_ERROR, VolumeExtension);
+		// We can only support the volume itself if the user booted an xiso image
+		if (IoDvdInputType == 0) {
+			return XisoCompleteRequest(Irp, STATUS_IO_DEVICE_ERROR, VolumeExtension);
+		}
 	}
 	else {
 		// Cannot read past the end of the file

diff --git a/nboxkrnl/io/io.cpp b/nboxkrnl/io/io.cpp
@@ -47,6 +47,7 @@ BOOLEAN IoInitSystem()
 	}
 
 	XboxFactoryGameRegion = CachedEeprom.EncryptedSettings.GameRegion;
+	IoDvdInputType = inl(DVD_MEDIA_TYPE);
 
 	if (!HddInitDriver()) {
 		return FALSE;

diff --git a/nboxkrnl/kernel.hpp b/nboxkrnl/kernel.hpp
@@ -27,6 +27,8 @@
 #define IO_RETRY 0x207
 // Request the I/O request with the specified id
 #define IO_QUERY 0x208
+// Request the dvd type the user has booted
+#define DVD_MEDIA_TYPE 0x209
 // Check if a I/O request was submitted successfully
 #define IO_CHECK_ENQUEUE 0x20A
 // Request the path's length of the XBE to launch when no reboot occured
@@ -141,6 +143,7 @@ struct XBOX_HARDWARE_INFO {
 };
 
 inline SystemType XboxType;
+inline ULONG IoDvdInputType; // 0: xbe, 1: xiso
 inline ULONGLONG IoRequestId = 0;
 inline ULONGLONG IoHostFileHandle = FIRST_FREE_HANDLE;