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diff --git a/src/file_io.c b/src/file_io.c
index 7cf8f0c..47351bc 100644
--- a/src/file_io.c
+++ b/src/file_io.c
@@ -787,6 +787,19 @@ psf_open_handle (PSF_FILE * pfile)
return NULL ;
} ;
+#if defined (WINAPI_FAMILY_PARTITION) && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP | WINAPI_PARTITION_SYSTEM)
+ if (!pfile->use_wchar)
+ return NULL;
+
+ CREATEFILE2_EXTENDED_PARAMETERS cfParams = {0};
+ cfParams.dwSize = sizeof(CREATEFILE2_EXTENDED_PARAMETERS);
+ cfParams.dwFileAttributes = FILE_ATTRIBUTE_NORMAL;
+
+ handle = CreateFile2(pfile->path.wc, dwDesiredAccess, dwShareMode, dwCreationDistribution, &cfParams);
+
+ if (handle == INVALID_HANDLE_VALUE)
+ return NULL;
+#else
if (pfile->use_wchar)
handle = CreateFileW (
pfile->path.wc, /* pointer to name of the file */
@@ -812,6 +825,7 @@ psf_open_handle (PSF_FILE * pfile)
return NULL ;
return handle ;
+#endif
} /* psf_open_handle */
/* USE_WINDOWS_API */ static void
@@ -1104,7 +1118,16 @@ psf_is_pipe (SF_PRIVATE *psf)
/* USE_WINDOWS_API */ sf_count_t
psf_get_filelen_handle (HANDLE handle)
-{ sf_count_t filelen ;
+{
+#if defined (WINAPI_FAMILY_PARTITION) && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP | WINAPI_PARTITION_SYSTEM)
+ LARGE_INTEGER size;
+
+ if (!GetFileSizeEx(handle, &size) && GetLastError() != NO_ERROR)
+ return (sf_count_t) -1 ;
+
+ return size.QuadPart;
+#else
+ sf_count_t filelen ;
DWORD dwFileSizeLow, dwFileSizeHigh, dwError = NO_ERROR ;
dwFileSizeLow = GetFileSize (handle, &dwFileSizeHigh) ;
@@ -1118,6 +1141,7 @@ psf_get_filelen_handle (HANDLE handle)
filelen = dwFileSizeLow + ((__int64) dwFileSizeHigh << 32) ;
return filelen ;
+#endif
} /* psf_get_filelen_handle */
/* USE_WINDOWS_API */ void
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