H5Lcreate_hard
(
hid_t obj_loc_id
,
const char *obj_name
,
hid_t link_loc_id
,
const char *link_name
,
hid_t lcpl_id
,
hid_t lapl_id
)
H5Lcreate_hard
creates a new hard link to a
pre-existing object in an HDF5 file.
The new link may be one of many that point to that object.
The target object must already exist in the file.
obj_loc_id
and obj_name
specify the
location and name, respectively, of the target object,
i.e., the object that the new hard link points to.
link_loc_id
and link_name
specify the
location and name, respectively, of the new hard link.
obj_name
and link_name
are interpreted
relative to obj_loc_id
and link_loc_id
,
respectively.
If obj_loc_id
and link_loc_id
are
the same location, the HDF5 macro H5L_SAME_LOC
can be used for either parameter (but not both).
lcpl_id
and lapl_id
are the
link creation and access property lists associated with the
new link.
Hard and soft links are for use only if the target object
is in the current file.
If the desired target object is in a different file from the
new link, an external link may be created with
H5Lcreate_external
.
The HDF5 library keeps a count of all hard links pointing to an
object; if the hard link count reaches zero (0
),
the object will be deleted from the file. Creating new hard links
to an object will prevent it from being deleted if other links
are removed.
The library maintains no similar count for soft links and they
can dangle.
hid_t obj_loc_id |
IN: The file or group identifier for the target object. |
const char *obj_name |
IN: Name of the target object, which must already exist. |
hid_t link_loc_id |
IN: The file or group identifier for the new link. |
const char * link_name |
IN: The name of the new link. |
hid_t lcpl_id |
IN: Link creation property list identifier. |
hid_t lapl_id |
IN: Link access property list identifier. |
SUBROUTINE h5lcreate_hard_f(obj_loc_id, obj_name, link_loc_id, link_name, & hdferr, lcpl_id, lapl_id) IMPLICIT NONE INTEGER(HID_T), INTENT(IN) :: obj_loc_id ! The file or group identifier for the target object. CHARACTER(LEN=*), INTENT(IN) :: obj_name ! Name of the target object, which must already exist. INTEGER(HID_T), INTENT(IN) :: link_loc_id ! The file or group identifier for the new link. CHARACTER(LEN=*), INTENT(IN) :: link_name ! The name of the new link. INTEGER, INTENT(OUT) :: hdferr ! Error code: ! 0 on success and -1 on failure INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lcpl_id ! Link creation property list identifier. INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id ! Link access property list identifier. END SUBROUTINE h5lcreate_hard_f
Release | C |
1.8.0 | Function introduced in this release. |