BaseTools/DevicePath: use MAX_UINT32 as default device path max size

Replace the default size limit of IsDevicePathValid() with a value
that does not depend on the native word size of the build host.

4 GiB seems sufficient as the upper bound of a device path handled
by UEFI.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/BaseTools/Source/C/DevicePath/DevicePathUtilities.c b/BaseTools/Source/C/DevicePath/DevicePathUtilities.c
index d4ec2742b7..f8a41ff97d 100644
--- a/BaseTools/Source/C/DevicePath/DevicePathUtilities.c
+++ b/BaseTools/Source/C/DevicePath/DevicePathUtilities.c
@@ -62,7 +62,7 @@ IsDevicePathValid (
   ASSERT (DevicePath != NULL);

 

   if (MaxSize == 0) {

-    MaxSize = MAX_UINTN;

+    MaxSize = MAX_UINT32;

  }

 

   //

@@ -78,7 +78,7 @@ IsDevicePathValid (
       return FALSE;

     }

 

-    if (NodeLength > MAX_UINTN - Size) {

+    if (NodeLength > MAX_UINT32 - Size) {

       return FALSE;

     }

     Size += NodeLength;