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-rw-r--r--src/H5Oint.c60
1 files changed, 56 insertions, 4 deletions
diff --git a/src/H5Oint.c b/src/H5Oint.c
index 6ab5393..0df7467 100644
--- a/src/H5Oint.c
+++ b/src/H5Oint.c
@@ -131,6 +131,13 @@ const H5O_msg_class_t *const H5O_msg_class_g[] = {
#endif /* H5O_ENABLE_BOGUS */
};
+/* Format version bounds for object header */
+const unsigned H5O_obj_ver_bounds[] = {
+ H5O_VERSION_1, /* H5F_LIBVER_EARLIEST */
+ H5O_VERSION_2, /* H5F_LIBVER_V18 */
+ H5O_VERSION_LATEST /* H5F_LIBVER_LATEST */
+};
+
/* Declare a free list to manage the H5O_t struct */
H5FL_DEFINE(H5O_t);
@@ -203,6 +210,51 @@ H5O__init_package(void)
/*-------------------------------------------------------------------------
+ * Function: H5O_set_version
+ *
+ * Purpose: Sets the correct version to encode the object header.
+ * Chooses the oldest version possible, unless the file's
+ * low bound indicates otherwise.
+ *
+ * Return: Success: Non-negative
+ * Failure: Negative
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Jul 17 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_set_version(H5F_t *f, H5O_t *oh, uint8_t oh_flags, hbool_t store_msg_crt_idx)
+{
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI(FAIL)
+
+ /* check arguments */
+ HDassert(f);
+ HDassert(oh);
+
+ /* Set the correct version to encode object header with */
+ if(store_msg_crt_idx || (oh_flags & H5O_HDR_ATTR_CRT_ORDER_TRACKED))
+ oh->version = H5O_VERSION_2;
+ else
+ oh->version = H5O_VERSION_1;
+
+ /* Upgrade to the version indicated by the file's low bound if higher */
+ oh->version = MAX(oh->version, (uint8_t)H5O_obj_ver_bounds[H5F_LOW_BOUND(f)]);
+
+ /* File bound check */
+ if(oh->version > H5O_obj_ver_bounds[H5F_HIGH_BOUND(f)])
+ HGOTO_ERROR(H5E_OHDR, H5E_BADRANGE, FAIL, "object header version out of bounds")
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O_set_version() */
+
+
+/*-------------------------------------------------------------------------
* Function: H5O_create
*
* Purpose: Creates a new object header. Allocates space for it and
@@ -263,10 +315,10 @@ H5O_create(H5F_t *f, hid_t dxpl_id, size_t size_hint, size_t initial_rc,
/* Initialize file-specific information for object header */
store_msg_crt_idx = H5F_STORE_MSG_CRT_IDX(f);
- if(H5F_USE_LATEST_FLAGS(f, H5F_LATEST_OBJ_HEADER) || store_msg_crt_idx || (oh_flags & H5O_HDR_ATTR_CRT_ORDER_TRACKED))
- oh->version = H5O_VERSION_LATEST;
- else
- oh->version = H5O_VERSION_1;
+
+ if(H5O_set_version(f, oh, oh_flags, store_msg_crt_idx) < 0)
+ HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set version of objecdt header")
+
oh->sizeof_size = H5F_SIZEOF_SIZE(f);
oh->sizeof_addr = H5F_SIZEOF_ADDR(f);
oh->swmr_write = !!(H5F_INTENT(f) & H5F_ACC_SWMR_WRITE);