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diff --git a/src/H5FDgass.h b/src/H5FDgass.h
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+/*
+ * Copyright © 1999 NCSA
+ * All rights reserved.
+ *
+ * Programmer: Saurabh Bagchi <bagchi@uiuc.edu>
+ * Tuesday, August 17, 1999
+ *
+ * Purpose: The public header file for the gass driver.
+ */
+#ifndef H5FDgass_H
+#define H5FDgass_H
+
+#include <H5FDpublic.h>
+#include <H5Ipublic.h>
+#include <H5Eprivate.h>
+
+#include <string.h>
+
+#ifdef HAVE_GASS
+#define H5FD_GASS (H5FD_gass_init())
+#else
+#define H5FD_GASS (-1)
+#endif
+
+#ifdef HAVE_GASS
+/* Define the GASS info object. (Will be added to later as more GASS
+ functionality is sought to be exposed. */
+typedef struct GASS_Info {
+ unsigned long block_size;
+ unsigned long max_length;
+} GASS_Info;
+
+#define GASS_INFO_NULL(v) memset((void *)&v, 0, sizeof(GASS_Info));
+/*
+ GASS_Info zzGassInfo = {0L,0L};
+ #define GASS_INFO_NULL zzGassInfo
+*/
+#endif
+
+/* Function prototypes */
+#ifdef HAVE_GASS
+hid_t H5FD_gass_init(void);
+herr_t H5Pset_fapl_gass(hid_t fapl_id, GASS_Info info);
+herr_t H5Pget_fapl_gass(hid_t fapl_id, GASS_Info *info/*out*/);
+
+#endif
+
+#endif // H5FDgass_H