Fixed HDFFV-10214:

* Updated comments in the library to accurately reflect the semantics
  of the H5FD_FEAT_POSIX_COMPAT_HANDLE flag.
* Removed the check for the POSIX compatible handle feature flag
  when determining if a VFD supports SWMR.
Partial work for HDFFV-10197:
* Added a new H5FD_FEAT_DEFAULT_VFD_COMPATIBLE feature flag that is
  set when a VFD creates output that is compatible with the default
  VFD. Will be used in the testing but might also be generally useful
  to users.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/H5FDpublic.h b/src/H5FDpublic.h
index 3032e8a..45b1237 100644
--- a/src/H5FDpublic.h
+++ b/src/H5FDpublic.h
@@ -250,6 +250,14 @@ typedef enum H5F_mem_t	H5FD_mem_t;
      * This is specifically used for the multi/split driver.
      */
 #define H5FD_FEAT_PAGED_AGGR		0x00004000
+    /*
+     * Defining H5FD_FEAT_DEFAULT_VFD_COMPATIBLE for a VFL driver
+     * that creates a file which is compatible with the default VFD.
+     * Generally, this means that the VFD creates a single file that follows
+     * the canonical HDF5 file format.
+     */
+#define H5FD_FEAT_DEFAULT_VFD_COMPATIBLE        0x00008000
+
 
 /* Forward declaration */
 typedef struct H5FD_t H5FD_t;