From 87a81eb5afd4d24b2ba42ef78d8aee433c8e8639 Mon Sep 17 00:00:00 2001
From: Mohamad Chaarawi <chaarawi@hdfgroup.org>
Date: Thu, 14 Jun 2012 08:29:30 -0500
Subject: [svn-r22461] add a prototype for a new API routine, H5Fis_accessable

---
 src/H5F.c        | 51 +++++++++++++++++----------------------------------
 src/H5Fprivate.h |  1 -
 src/H5Fpublic.h  |  1 +
 src/H5VLnative.c | 10 ----------
 src/H5VLpublic.h |  5 ++---
 5 files changed, 20 insertions(+), 48 deletions(-)

diff --git a/src/H5F.c b/src/H5F.c
index af71d09..9c3ff8f 100644
--- a/src/H5F.c
+++ b/src/H5F.c
@@ -883,60 +883,43 @@ done:
             HDONE_ERROR(H5E_IO, H5E_CANTCLOSEFILE, FAIL, "unable to close file")
 
     FUNC_LEAVE_API(ret_value)
-#if 0
-    htri_t	ret_value;              /* Return value */
-
-    FUNC_ENTER_API(FAIL)
-    H5TRACE1("t", "*s", name);
-
-    /* Check args and all the boring stuff. */
-    if(!name || !*name)
-	HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "no file name specified")
-
-    if((ret_value = H5VL_file_optional(H5VL_FILE_IS_HDF5, &ret_value, name)) < 0)
-        HGOTO_ERROR(H5E_INTERNAL, H5E_CANTGET, FAIL, "unable to get file handle")
-
-    FUNC_LEAVE_API(ret_value)
-#endif
 } /* end H5Fis_hdf5() */
 
 
 /*-------------------------------------------------------------------------
- * Function:	H5F_is_hdf5
+ * Function:	H5Fis_accessable
  *
- * Purpose:	private version of H5Fis_hdf5.
+ * Purpose:	Check if the file can be opened with the given fapl.
  *
  * Return:	Success:	TRUE/FALSE
- *
  *		Failure:	Negative
  *
- * Programmer:	Unknown
+ * Programmer:	Mohamad Chaarawi
+ *              June 2012
  *
  *-------------------------------------------------------------------------
  */
 htri_t
-H5F_is_hdf5(const char *name)
+H5Fis_accessable(const char *name, hid_t fapl_id)
 {
-    H5FD_t *file = NULL;           /* Low-level file struct */
-    htri_t	ret_value;              /* Return value */
+    htri_t	ret_value = TRUE;              /* Return value */
 
-    FUNC_ENTER_NOAPI_NOINIT
+    FUNC_ENTER_API(FAIL)
+    H5TRACE2("t", "*si", name, fapl_id);
 
-    /* Open the file at the virtual file layer */
-    if(NULL == (file = H5FD_open(name, H5F_ACC_RDONLY, H5P_FILE_ACCESS_DEFAULT, HADDR_UNDEF)))
-        HGOTO_ERROR(H5E_IO, H5E_CANTINIT, FAIL, "unable to open file")
+    /* Check args and all the boring stuff. */
+    if(!name || !*name)
+	HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "no file name specified")
 
-    /* The file is an hdf5 file if the hdf5 file signature can be found */
-    ret_value = (HADDR_UNDEF != H5F_locate_signature(file, H5AC_ind_dxpl_id));
+#if 0
+    if(H5VL_file_optional(H5VL_FILE_IS_HDF5, &ret_value, name) < 0)
+        HGOTO_ERROR(H5E_INTERNAL, H5E_CANTGET, FAIL, "unable to get file handle")
+#endif
 
 done:
-    /* Close the file */
-    if(file)
-        if(H5FD_close(file) < 0 && ret_value >= 0)
-            HDONE_ERROR(H5E_IO, H5E_CANTCLOSEFILE, FAIL, "unable to close file")
+    FUNC_LEAVE_API(ret_value)
+} /* end H5Fis_accessable() */
 
-    FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5Fis_hdf5() */
 
 
 /*-------------------------------------------------------------------------
diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h
index 20aff87..26ef19e 100644
--- a/src/H5Fprivate.h
+++ b/src/H5Fprivate.h
@@ -535,7 +535,6 @@ H5_DLL hid_t H5F_get_id(H5F_t *file, hbool_t app_ref);
 H5_DLL herr_t H5F_get_obj_count(const H5F_t *f, unsigned types, hbool_t app_ref, size_t *obj_id_count_ptr);
 H5_DLL herr_t H5F_get_obj_ids(const H5F_t *f, unsigned types, size_t max_objs, hid_t *oid_list, hbool_t app_ref, size_t *obj_id_count_ptr);
 H5_DLL struct H5VL_class_t *H5F_get_vol_cls(const H5F_t *f);
-H5_DLL htri_t H5F_is_hdf5(const char *name);
 
 /* Functions than retrieve values set/cached from the superblock/FCPL */
 H5_DLL haddr_t H5F_get_base_addr(const H5F_t *f);
diff --git a/src/H5Fpublic.h b/src/H5Fpublic.h
index f32b3e0..6611455 100644
--- a/src/H5Fpublic.h
+++ b/src/H5Fpublic.h
@@ -175,6 +175,7 @@ extern "C" {
 
 /* Functions in H5F.c */
 H5_DLL htri_t H5Fis_hdf5(const char *filename);
+H5_DLL htri_t H5Fis_accessable(const char *filename, hid_t fapl_id);
 H5_DLL hid_t  H5Fcreate(const char *filename, unsigned flags,
 		  	  hid_t create_plist, hid_t access_plist);
 H5_DLL hid_t  H5Fopen(const char *filename, unsigned flags,
diff --git a/src/H5VLnative.c b/src/H5VLnative.c
index e96132b..bd003bc 100644
--- a/src/H5VLnative.c
+++ b/src/H5VLnative.c
@@ -1712,16 +1712,6 @@ H5VL_native_file_misc(hid_t loc_id, H5VL_file_misc_t misc_type, hid_t UNUSED req
     FUNC_ENTER_NOAPI_NOINIT
 
     switch (misc_type) {
-        /* H5Fis_hdf5 */
-        case H5VL_FILE_IS_HDF5:
-            {
-                htri_t     *ret    = va_arg (arguments, htri_t *);
-                const char *name   = va_arg (arguments, const char *);
-
-                if((*ret = H5F_is_hdf5(name)) < 0)
-                    HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't determine if file is an HDF5 file")
-                break;
-            }
         /* H5Fmount */
         case H5VL_FILE_MOUNT:
             {
diff --git a/src/H5VLpublic.h b/src/H5VLpublic.h
index f1d3046..ba15f67 100644
--- a/src/H5VLpublic.h
+++ b/src/H5VLpublic.h
@@ -82,9 +82,8 @@ typedef enum H5VL_file_get_t {
 
 /* types for all file misc operations */
 typedef enum H5VL_file_misc_t {
-    H5VL_FILE_IS_HDF5               = 0,         /* is HDF5?                             */
-    H5VL_FILE_MOUNT                 = 1,
-    H5VL_FILE_UNMOUNT               = 2
+    H5VL_FILE_MOUNT                 = 0,
+    H5VL_FILE_UNMOUNT               = 1
 } H5VL_file_misc_t;
 
 /* types for all file optional operations */
-- 
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