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
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/****************/
/* Module Setup */
/****************/
#include "H5PLmodule.h" /* This source code file is part of the H5PL module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5PLpkg.h" /* Plugin */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5PLset_loading_state
*
* Purpose: Control the loading of dynamic plugin types.
*
* The plugin_control_mask parameter is a bitfield that controls
* whether certain classes of plugins (e.g.: filters,
* VOL drivers) will be loaded by the library.
*
* plugin bit = 0, will prevent the use of that dynamic plugin type.
* plugin bit = 1, will allow the use of that dynamic plugin type.
*
* A list of pre-defined masks can be found in H5PLpublic.h.
* Set the mask to 0 to disable all plugins.
*
* This function will not allow plugin types if the pathname
* from the HDF5_PLUGIN_PRELOAD environment variable is set to
* the special "::" string.
*
* Return: Success: Non-negative
* Failture: Negative
*
*-------------------------------------------------------------------------
*/
herr_t
H5PLset_loading_state(unsigned int plugin_control_mask)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE1("e", "Iu", plugin_control_mask);
/* Set the plugin control mask */
if(H5PL__set_plugin_control_mask(plugin_control_mask) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_CANTSET, FAIL, "error setting plugin control mask")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5PLset_loading_state() */
/*-------------------------------------------------------------------------
* Function: H5PLget_loading_state
*
* Purpose: Get the bitmask that controls whether certain classes
* of plugins (e.g.: filters, VOL drivers) will be loaded
* by the library.
*
* Zero if all plugin types are disabled
* Negative if all plugin types are enabled
* Positive if one or more of the plugin types are enabled
*
* Return: Success: Non-negative
* Failture: Negative
*
*-------------------------------------------------------------------------
*/
herr_t
H5PLget_loading_state(unsigned int *plugin_control_mask)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE1("e", "*Iu", plugin_control_mask);
if (NULL == plugin_control_mask)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "plugin_control_mask parameter cannot be NULL")
/* Set the plugin control mask */
if(H5PL__get_plugin_control_mask(plugin_control_mask) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_CANTGET, FAIL, "error getting plugin control mask")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5PLget_loading_state() */
/*-------------------------------------------------------------------------
* Function: H5PLappend
*
* Purpose: Insert a plugin search path at the end of the list.
*
* Return: Success: Non-negative
* Failture: Negative
*
*-------------------------------------------------------------------------
*/
herr_t
H5PLappend(const char *search_path)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE1("e", "*s", search_path);
/* Check args */
if (NULL == search_path)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "plugin_path parameter cannot be NULL")
if (0 == HDstrlen(search_path))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "plugin_path parameter cannot have length zero")
/* Append the search path to the path table */
if (H5PL__append_path(search_path) < 0)
HGOTO_ERROR(H5E_PLUGIN, H5E_CANTAPPEND, FAIL, "unable to append search path")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5PLappend() */
/*-------------------------------------------------------------------------
* Function: H5PLprepend
*
* Purpose: Insert a plugin search path at the beginning of the list.
*
* Return: Success: Non-negative
* Failture: Negative
*
*-------------------------------------------------------------------------
*/
herr_t
H5PLprepend(const char *search_path)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE1("e", "*s", search_path);
/* Check args */
if (NULL == search_path)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "plugin_path parameter cannot be NULL")
if (0 == HDstrlen(search_path))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "plugin_path parameter cannot have length zero")
/* Prepend the search path to the path table */
if (H5PL__prepend_path(search_path) < 0)
HGOTO_ERROR(H5E_PLUGIN, H5E_CANTINSERT, FAIL, "unable to prepend search path")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5PLprepend() */
/*-------------------------------------------------------------------------
* Function: H5PLreplace
*
* Purpose: Replace the path at the specified index. The path at the
* index must exist.
*
* Return: Non-negative or success.
*
*-------------------------------------------------------------------------
*/
herr_t
H5PLreplace(const char *search_path, unsigned int index)
{
unsigned num_paths; /* Current number of stored paths */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE2("e", "*sIu", search_path, index);
/* Check args */
if (NULL == search_path)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "plugin_path parameter cannot be NULL")
if (0 == HDstrlen(search_path))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "plugin_path parameter cannot have length zero")
/* Check index */
num_paths = H5PL__get_num_paths();
if (0 == num_paths)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "path table is empty")
else if (index >= num_paths)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "index path out of bounds for table - can't be more than %u", (num_paths - 1))
/* Insert the search path into the path table */
if (H5PL__replace_path(search_path, index) < 0)
HGOTO_ERROR(H5E_PLUGIN, H5E_CANTINSERT, FAIL, "unable to replace search path")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5PLreplace() */
/*-------------------------------------------------------------------------
* Function: H5PLinsert
*
* Purpose: Insert a plugin search path at the specified index, moving
* other paths after the index.
*
* Return: Success: Non-negative
* Failture: Negative
*
*-------------------------------------------------------------------------
*/
herr_t
H5PLinsert(const char *search_path, unsigned int index)
{
unsigned num_paths; /* Current number of stored paths */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE2("e", "*sIu", search_path, index);
/* Check args */
if (NULL == search_path)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "plugin_path parameter cannot be NULL")
if (0 == HDstrlen(search_path))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "plugin_path parameter cannot have length zero")
/* Check index */
num_paths = H5PL__get_num_paths();
if ((0 != num_paths) && (index >= num_paths))
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "index path out of bounds for table - can't be more than %u", (num_paths - 1))
/* Insert the search path into the path table */
if (H5PL__insert_path(search_path, index) < 0)
HGOTO_ERROR(H5E_PLUGIN, H5E_CANTINSERT, FAIL, "unable to insert search path")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5PLinsert() */
/*-------------------------------------------------------------------------
* Function: H5PLremove
*
* Purpose: Remove the plugin path at the specifed index and compact
* the list.
*
* Return: Success: Non-negative
* Failture: Negative
*
* Return: Non-negative or success.
*
*-------------------------------------------------------------------------
*/
herr_t
H5PLremove(unsigned int index)
{
unsigned num_paths; /* Current number of stored paths */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE1("e", "Iu", index);
/* Check index */
num_paths = H5PL__get_num_paths();
if (0 == num_paths)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "path table is empty")
else if (index >= num_paths)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "index path out of bounds for table - can't be more than %u", (num_paths - 1))
/* Delete the search path from the path table */
if (H5PL__remove_path(index) < 0)
HGOTO_ERROR(H5E_PLUGIN, H5E_CANTDELETE, FAIL, "unable to remove search path")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5PLremove() */
/*-------------------------------------------------------------------------
* Function: H5PLget
*
* Purpose: Query the plugin path at a specified index.
*
* If 'path_buf' is non-NULL then up to 'buf_size' bytes will be written into
* that buffer and the length of the path name will be returned.
*
* If 'path_buf' is NULL, this function will simply return the number of
* characters required to store the path name, ignoring 'path_buf' and
* 'buf_size'
*
* If an error occurs then the buffer pointed to by 'path_buf'
* (NULL or non-NULL) will be unchanged and the function will return a
* negative value.
*
* If a zero is returned for the name's length, then there is no path name
* associated with the index and the 'path_buf' buffer will be unchanged.
*
* Return: Success: The length of path
* Failure: A negative value
*
*-------------------------------------------------------------------------
*/
ssize_t
H5PLget(unsigned int index, char *path_buf, size_t buf_size)
{
unsigned num_paths; /* Current number of stored paths */
const char *path = NULL; /* path from table */
size_t path_len = 0; /* Length of path */
ssize_t ret_value = 0; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE3("Zs", "Iu*sz", index, path_buf, buf_size);
/* Check index */
num_paths = H5PL__get_num_paths();
if (0 == num_paths)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "path table is empty")
else if (index >= num_paths)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "index path out of bounds for table - can't be more than %u", (num_paths - 1))
/* Check if the search table is empty */
if (H5PL__get_num_paths() == 0)
HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, (-1), "plugin search path table is empty")
/* Get the path at the specified index and its length */
if (NULL == (path = H5PL__get_path(index)))
HGOTO_ERROR(H5E_PLUGIN, H5E_BADVALUE, (-1), "no path stored at that index")
path_len = HDstrlen(path);
/* If the path buffer is not NULL, copy the path to the buffer */
if (path_buf) {
HDstrncpy(path_buf, path, MIN((size_t)(path_len + 1), buf_size));
if ((size_t)path_len >= buf_size)
path_buf[buf_size - 1] = '\0';
} /* end if */
/* Set return value */
ret_value = (ssize_t)path_len;
done:
FUNC_LEAVE_API(ret_value)
} /* end H5PLget() */
/*-------------------------------------------------------------------------
* Function: H5PLsize
*
* Purpose: Get the number of stored plugin paths.
* XXX: This is a terrible name. Can it be changed?
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5PLsize(unsigned int *num_paths)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE1("e", "*Iu", num_paths);
/* Check arguments */
if (!num_paths)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "num_paths parameter cannot be NULL")
/* Get the number of stored plugin paths */
*num_paths = H5PL__get_num_paths();
done:
FUNC_LEAVE_API(ret_value)
} /* end H5PLsize() */
|
