H5L_CREATE_UD creates a link of user-defined type
link_name at the location specified in
link_loc_id with user-specified data
link_name is interpreted relative to
Valid values for the link class of the new link,
H5L_TYPE_EXTERNAL and any user-defined link classes that have been registered with the library. See H5L_REGISTER for further information.
The format of the information pointed to by
udata is defined by the user.
udata_size specifies the size of the
udata may be NULL if
udata_size is zero (
The property lists specified by
lapl_id specify properties used to create and access the link.
The external link type,
H5L_TYPE_EXTERNAL, included in the HDF5 library distribution, is implemented as a user-defined link type. This was done, in part, to provide a model for the implementation of other user-defined links.