1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Lpublic.h
* Dec 1 2005
* James Laird
*
* Purpose: Public declarations for the H5L package (links)
*
*-------------------------------------------------------------------------
*/
#ifndef _H5Lpublic_H
#define _H5Lpublic_H
/* Public headers needed by this file */
#include "H5public.h" /* Generic Functions */
#include "H5Ipublic.h" /* IDs */
#include "H5Tpublic.h" /* Datatypes */
/*****************/
/* Public Macros */
/*****************/
/* Maximum length of a link's name */
/* (encoded in a 32-bit unsigned integer) */
#define H5L_MAX_LINK_NAME_LEN ((uint32_t)(-1)) /* (4GB - 1) */
/* Macro to indicate operation occurs on same location */
#define H5L_SAME_LOC 0
/* Current version of the H5L_class_t struct */
#define H5L_LINK_CLASS_T_VERS 0
#ifdef __cplusplus
extern "C" {
#endif
/*******************/
/* Public Typedefs */
/*******************/
/* Link class types.
* Values less than 64 are reserved for the HDF5 library's internal use.
* Values 64 to 255 are for "user-defined" link class types; these types are
* defined by HDF5 but their behavior can be overridden by users.
* Users who want to create new classes of links should contact the HDF5
* development team at hdfhelp@ncsa.uiuc.edu .
* These values can never change because they appear in HDF5 files.
*/
typedef enum {
H5L_TYPE_ERROR = (-1), /* Invalid link type id */
H5L_TYPE_HARD = 0, /* Hard link id */
H5L_TYPE_SOFT = 1, /* Soft link id */
H5L_TYPE_EXTERNAL = 64, /* External link id */
H5L_TYPE_MAX = 255 /* Maximum link type id */
} H5L_type_t;
#define H5L_TYPE_BUILTIN_MAX H5L_TYPE_SOFT /* Maximum value link value for "built-in" link types */
#define H5L_TYPE_UD_MIN H5L_TYPE_EXTERNAL /* Link ids at or above this value are "user-defined" link types. */
/* Information struct for link (for H5Lget_info/H5Lget_info_by_idx) */
typedef struct {
H5L_type_t type; /* Type of link */
hbool_t corder_valid; /* Indicate if creation order is valid */
int64_t corder; /* Creation order */
H5T_cset_t cset; /* Character set of link name */
union {
haddr_t address; /* Address hard link points to */
size_t val_size; /* Size of a soft link or UD link value */
} u;
} H5L_info_t;
/* The H5L_class_t struct can be used to override the behavior of a
* "user-defined" link class. Users should populate the struct with callback
* functions defined below.
*/
/* Callback prototypes for user-defined links */
/* Link creation callback */
typedef herr_t (*H5L_create_func_t)(const char *link_name, hid_t loc_group,
const void *lnkdata, size_t lnkdata_size, hid_t lcpl_id);
/* Callback for when the link is moved */
typedef herr_t (*H5L_move_func_t)(const char *new_name, hid_t new_loc,
const void *lnkdata, size_t lnkdata_size);
/* Callback for when the link is copied */
typedef herr_t (*H5L_copy_func_t)(const char *new_name, hid_t new_loc,
const void *lnkdata, size_t lnkdata_size);
/* Callback during link traversal */
typedef herr_t (*H5L_traverse_func_t)(const char *link_name, hid_t cur_group,
const void *lnkdata, size_t lnkdata_size, hid_t lapl_id);
/* Callback for when the link is deleted */
typedef herr_t (*H5L_delete_func_t)(const char *link_name, hid_t file,
const void *lnkdata, size_t lnkdata_size);
/* Callback for querying the link */
/* Returns the size of the buffer needed */
typedef ssize_t (*H5L_query_func_t)(const char *link_name, const void *lnkdata,
size_t lnkdata_size, void *buf /*out*/, size_t buf_size);
/* User-defined link types */
typedef struct {
int version; /* Version number of this struct */
H5L_type_t id; /* Link type ID */
const char *comment; /* Comment for debugging */
H5L_create_func_t create_func; /* Callback during link creation */
H5L_move_func_t move_func; /* Callback after moving link */
H5L_copy_func_t copy_func; /* Callback after copying link */
H5L_traverse_func_t trav_func; /* Callback during link traversal */
H5L_delete_func_t del_func; /* Callback for link deletion */
H5L_query_func_t query_func; /* Callback for queries */
} H5L_class_t;
/* Prototype for H5Literate/H5Literate_by_name() operator */
typedef herr_t (*H5L_iterate_t)(hid_t group, const char *name, const H5L_info_t *info,
void *op_data);
/* Callback for external link traversal */
typedef herr_t (*H5L_elink_traverse_t)(const char *parent_file_name,
const char *parent_group_name, const char *child_file_name,
const char *child_object_name, unsigned *acc_flags, hid_t fapl_id,
void *op_data);
/********************/
/* Public Variables */
/********************/
/*********************/
/* Public Prototypes */
/*********************/
H5_DLL herr_t H5Lmove(hid_t src_loc, const char *src_name, hid_t dst_loc,
const char *dst_name, hid_t lcpl_id, hid_t lapl_id);
H5_DLL herr_t H5Lcopy(hid_t src_loc, const char *src_name, hid_t dst_loc,
const char *dst_name, hid_t lcpl_id, hid_t lapl_id);
H5_DLL herr_t H5Lcreate_hard(hid_t cur_loc, const char *cur_name,
hid_t dst_loc, const char *dst_name, hid_t lcpl_id, hid_t lapl_id);
H5_DLL herr_t H5Lcreate_soft(const char *link_target, hid_t link_loc_id,
const char *link_name, hid_t lcpl_id, hid_t lapl_id);
H5_DLL herr_t H5Ldelete(hid_t loc_id, const char *name, hid_t lapl_id);
H5_DLL herr_t H5Ldelete_by_idx(hid_t loc_id, const char *group_name,
H5_index_t idx_type, H5_iter_order_t order, hsize_t n, hid_t lapl_id);
H5_DLL herr_t H5Lget_val(hid_t loc_id, const char *name, void *buf/*out*/,
size_t size, hid_t lapl_id);
H5_DLL herr_t H5Lget_val_by_idx(hid_t loc_id, const char *group_name,
H5_index_t idx_type, H5_iter_order_t order, hsize_t n,
void *buf/*out*/, size_t size, hid_t lapl_id);
H5_DLL htri_t H5Lexists(hid_t loc_id, const char *name, hid_t lapl_id);
H5_DLL herr_t H5Lget_info(hid_t loc_id, const char *name,
H5L_info_t *linfo /*out*/, hid_t lapl_id);
H5_DLL herr_t H5Lget_info_by_idx(hid_t loc_id, const char *group_name,
H5_index_t idx_type, H5_iter_order_t order, hsize_t n,
H5L_info_t *linfo /*out*/, hid_t lapl_id);
H5_DLL ssize_t H5Lget_name_by_idx(hid_t loc_id, const char *group_name,
H5_index_t idx_type, H5_iter_order_t order, hsize_t n,
char *name /*out*/, size_t size, hid_t lapl_id);
H5_DLL herr_t H5Literate(hid_t grp_id, H5_index_t idx_type,
H5_iter_order_t order, hsize_t *idx, H5L_iterate_t op, void *op_data);
H5_DLL herr_t H5Literate_by_name(hid_t loc_id, const char *group_name,
H5_index_t idx_type, H5_iter_order_t order, hsize_t *idx,
H5L_iterate_t op, void *op_data, hid_t lapl_id);
H5_DLL herr_t H5Lvisit(hid_t grp_id, H5_index_t idx_type, H5_iter_order_t order,
H5L_iterate_t op, void *op_data);
H5_DLL herr_t H5Lvisit_by_name(hid_t loc_id, const char *group_name,
H5_index_t idx_type, H5_iter_order_t order, H5L_iterate_t op,
void *op_data, hid_t lapl_id);
/* UD link functions */
H5_DLL herr_t H5Lcreate_ud(hid_t link_loc_id, const char *link_name,
H5L_type_t link_type, const void *udata, size_t udata_size, hid_t lcpl_id,
hid_t lapl_id);
H5_DLL herr_t H5Lregister(const H5L_class_t *cls);
H5_DLL herr_t H5Lunregister(H5L_type_t id);
H5_DLL htri_t H5Lis_registered(H5L_type_t id);
/* External link functions */
H5_DLL herr_t H5Lunpack_elink_val(const void *ext_linkval/*in*/, size_t link_size,
unsigned *flags, const char **filename/*out*/, const char **obj_path /*out*/);
H5_DLL herr_t H5Lcreate_external(const char *file_name, const char *obj_name,
hid_t link_loc_id, const char *link_name, hid_t lcpl_id, hid_t lapl_id);
#ifdef __cplusplus
}
#endif
#endif /* _H5Lpublic_H */
|
