[navaraf] 20218: Fix bunch of bugs in GetVolumeNameForVolumeMountPointW. Thanks to w3seek.

Fix bunch of bugs in GetVolumeNameForVolumeMountPointW. Thanks to
w3seek.
Modified: trunk/reactos/lib/kernel32/file/volume.c
  _____

Modified: trunk/reactos/lib/kernel32/file/volume.c
--- trunk/reactos/lib/kernel32/file/volume.c	2005-12-17 11:08:16 UTC
(rev 20217)
+++ trunk/reactos/lib/kernel32/file/volume.c	2005-12-17 11:31:12 UTC
(rev 20218)
@@ -826,10 +826,17 @@

* an NT acceptable name.
     */

-   RtlDosPathNameToNtPathName_U(L"e:\", &NtFileName, NULL, NULL);
+   if (!RtlDosPathNameToNtPathName_U(VolumeName, &NtFileName, NULL,
NULL))
+   {
+      SetLastError(ERROR_PATH_NOT_FOUND);
+      return FALSE;
+   }
+
    if (NtFileName.Length > sizeof(WCHAR) &&
        NtFileName.Buffer[(NtFileName.Length / sizeof(WCHAR)) - 1] ==
'\')
+   {
       NtFileName.Length -= sizeof(WCHAR);
+   }

/*
     * Query mount point device name which we will later use for
determining
@@ -852,17 +859,26 @@
    do
    {
       MountDevName = Buffer = RtlAllocateHeap(GetProcessHeap(), 0,
BufferLength);
+      if (Buffer == NULL)
+      {
+         NtClose(FileHandle);
+         SetLastErrorByStatus(Status);
+         return FALSE;
+      }
+
       Status = NtDeviceIoControlFile(FileHandle, NULL, NULL, NULL,
&Iosb,
                                      IOCTL_MOUNTDEV_QUERY_DEVICE_NAME,
                                      NULL, 0, Buffer, BufferLength);
       if (Status == STATUS_BUFFER_OVERFLOW)
       {
          BufferLength = sizeof(MOUNTDEV_NAME) +
MountDevName->NameLength;
+         RtlFreeHeap(GetProcessHeap(), 0, Buffer);
          continue;
       }
       else if (!NT_SUCCESS(Status))
       {
          RtlFreeHeap(GetProcessHeap(), 0, Buffer);
+         NtClose(FileHandle);
          SetLastErrorByStatus(Status);
          return FALSE;
       }
@@ -877,6 +893,12 @@

MountPointSize = MountDevName->NameLength +
sizeof(MOUNTMGR_MOUNT_POINT);
    MountPoint = RtlAllocateHeap(GetProcessHeap(), 0, MountPointSize);
+   if (MountPoint == NULL)
+   {
+      RtlFreeHeap(GetProcessHeap(), 0, MountDevName);
+      SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+      return FALSE;
+   }
    RtlZeroMemory(MountPoint, sizeof(MOUNTMGR_MOUNT_POINT));
    MountPoint->DeviceNameOffset = sizeof(MOUNTMGR_MOUNT_POINT);
    MountPoint->DeviceNameLength = MountDevName->NameLength;
@@ -899,6 +921,14 @@
    do
    {
       MountPoints = Buffer = RtlAllocateHeap(GetProcessHeap(), 0,
BufferLength);
+      if (Buffer == NULL)
+      {
+         RtlFreeHeap(GetProcessHeap(), 0, MountPoint);
+         NtClose(FileHandle);
+         SetLastErrorByStatus(Status);
+         return FALSE;
+      }
+
       Status = NtDeviceIoControlFile(FileHandle, NULL, NULL, NULL,
&Iosb,
                                      IOCTL_MOUNTMGR_QUERY_POINTS,
                                      MountPoint, MountPointSize,
@@ -906,6 +936,7 @@
       if (Status == STATUS_BUFFER_OVERFLOW)
       {
          BufferLength = MountPoints->Size;
+         RtlFreeHeap(GetProcessHeap(), 0, Buffer);
          continue;
       }
       else if (!NT_SUCCESS(Status))
@@ -938,7 +969,7 @@

if (MountPoint->SymbolicLinkNameLength == 48 * sizeof(WCHAR) ||
           (MountPoint->SymbolicLinkNameLength == 49 * sizeof(WCHAR) &&
-           SymbolicLinkName[49] == L'\'))
+           SymbolicLinkName[48] == L'\'))
       {
          if (RtlCompareMemory(SymbolicLinkName, L"\??\Volume{",
                               11 * sizeof(WCHAR)) == 11 * sizeof(WCHAR)
&&