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
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Robb Matzke
* Thursday, July 29, 1999
*
* Purpose: The POSIX unbuffered file driver using only the HDF5 public
* API and with a few optimizations: the lseek() call is made
* only when the current file position is unknown or needs to be
* changed based on previous I/O through this driver (don't mix
* I/O from this driver with I/O from other parts of the
* application to the same file).
*/
/* Interface initialization */
#define H5_INTERFACE_INIT_FUNC H5FD_sec2_init_interface
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Fprivate.h" /* File access */
#include "H5FDprivate.h" /* File drivers */
#include "H5FDsec2.h" /* Sec2 file driver */
#include "H5FLprivate.h" /* Free Lists */
#include "H5Iprivate.h" /* IDs */
#include "H5MMprivate.h" /* Memory management */
#include "H5Pprivate.h" /* Property lists */
/* The driver identification number, initialized at runtime */
static hid_t H5FD_SEC2_g = 0;
/* The description of a file belonging to this driver. The 'eoa' and 'eof'
* determine the amount of hdf5 address space in use and the high-water mark
* of the file (the current size of the underlying filesystem file). The
* 'pos' value is used to eliminate file position updates when they would be a
* no-op. Unfortunately we've found systems that use separate file position
* indicators for reading and writing so the lseek can only be eliminated if
* the current operation is the same as the previous operation. When opening
* a file the 'eof' will be set to the current file size, `eoa' will be set
* to zero, 'pos' will be set to H5F_ADDR_UNDEF (as it is when an error
* occurs), and 'op' will be set to H5F_OP_UNKNOWN.
*/
typedef struct H5FD_sec2_t {
H5FD_t pub; /* public stuff, must be first */
int fd; /* the filesystem file descriptor */
haddr_t eoa; /* end of allocated region */
haddr_t eof; /* end of file; current file size */
haddr_t pos; /* current file I/O position */
H5FD_file_op_t op; /* last operation */
char filename[H5FD_MAX_FILENAME_LEN]; /* Copy of file name from open operation */
#ifndef H5_HAVE_WIN32_API
/* On most systems the combination of device and i-node number uniquely
* identify a file. Note that Cygwin, MinGW and other Windows POSIX
* environments have the stat function (which fakes inodes)
* and will use the 'device + inodes' scheme as opposed to the
* Windows code further below.
*/
dev_t device; /* file device number */
ino_t inode; /* file i-node number */
#else
/* Files in windows are uniquely identified by the volume serial
* number and the file index (both low and high parts).
*
* There are caveats where these numbers can change, especially
* on FAT file systems. On NTFS, however, a file should keep
* those numbers the same until renamed or deleted (though you
* can use ReplaceFile() on NTFS to keep the numbers the same
* while renaming).
*
* See the MSDN "BY_HANDLE_FILE_INFORMATION Structure" entry for
* more information.
*
* http://msdn.microsoft.com/en-us/library/aa363788(v=VS.85).aspx
*/
DWORD nFileIndexLow;
DWORD nFileIndexHigh;
DWORD dwVolumeSerialNumber;
HANDLE hFile; /* Native windows file handle */
#endif /* H5_HAVE_WIN32_API */
/* Information from properties set by 'h5repart' tool
*
* Whether to eliminate the family driver info and convert this file to
* a single file.
*/
hbool_t fam_to_sec2;
} H5FD_sec2_t;
/*
* These macros check for overflow of various quantities. These macros
* assume that HDoff_t is signed and haddr_t and size_t are unsigned.
*
* ADDR_OVERFLOW: Checks whether a file address of type `haddr_t'
* is too large to be represented by the second argument
* of the file seek function.
*
* SIZE_OVERFLOW: Checks whether a buffer size of type `hsize_t' is too
* large to be represented by the `size_t' type.
*
* REGION_OVERFLOW: Checks whether an address and size pair describe data
* which can be addressed entirely by the second
* argument of the file seek function.
*/
#define MAXADDR (((haddr_t)1 << (8 * sizeof(HDoff_t) - 1)) - 1)
#define ADDR_OVERFLOW(A) (HADDR_UNDEF == (A) || ((A) & ~(haddr_t)MAXADDR))
#define SIZE_OVERFLOW(Z) ((Z) & ~(hsize_t)MAXADDR)
#define REGION_OVERFLOW(A, Z) \
(ADDR_OVERFLOW(A) || SIZE_OVERFLOW(Z) || HADDR_UNDEF == (A) + (Z) || (HDoff_t)((A) + (Z)) < (HDoff_t)(A))
/* Prototypes */
static H5FD_t *H5FD_sec2_open(const char *name, unsigned flags, hid_t fapl_id, haddr_t maxaddr);
static herr_t H5FD_sec2_close(H5FD_t *_file);
static int H5FD_sec2_cmp(const H5FD_t *_f1, const H5FD_t *_f2);
static herr_t H5FD_sec2_query(const H5FD_t *_f1, unsigned long *flags);
static haddr_t H5FD_sec2_get_eoa(const H5FD_t *_file, H5FD_mem_t type);
static herr_t H5FD_sec2_set_eoa(H5FD_t *_file, H5FD_mem_t type, haddr_t addr);
static haddr_t H5FD_sec2_get_eof(const H5FD_t *_file);
static herr_t H5FD_sec2_get_handle(H5FD_t *_file, hid_t fapl, void **file_handle);
static herr_t H5FD_sec2_read(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr, size_t size,
void *buf);
static herr_t H5FD_sec2_write(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr, size_t size,
const void *buf);
static herr_t H5FD_sec2_truncate(H5FD_t *_file, hid_t dxpl_id, hbool_t closing);
static const H5FD_class_t H5FD_sec2_g = {
"sec2", /* name */
MAXADDR, /* maxaddr */
H5F_CLOSE_WEAK, /* fc_degree */
NULL, /* sb_size */
NULL, /* sb_encode */
NULL, /* sb_decode */
0, /* fapl_size */
NULL, /* fapl_get */
NULL, /* fapl_copy */
NULL, /* fapl_free */
0, /* dxpl_size */
NULL, /* dxpl_copy */
NULL, /* dxpl_free */
H5FD_sec2_open, /* open */
H5FD_sec2_close, /* close */
H5FD_sec2_cmp, /* cmp */
H5FD_sec2_query, /* query */
NULL, /* get_type_map */
NULL, /* alloc */
NULL, /* free */
H5FD_sec2_get_eoa, /* get_eoa */
H5FD_sec2_set_eoa, /* set_eoa */
H5FD_sec2_get_eof, /* get_eof */
H5FD_sec2_get_handle, /* get_handle */
H5FD_sec2_read, /* read */
H5FD_sec2_write, /* write */
NULL, /* flush */
H5FD_sec2_truncate, /* truncate */
NULL, /* lock */
NULL, /* unlock */
H5FD_FLMAP_DICHOTOMY /* fl_map */
};
/* Declare a free list to manage the H5FD_sec2_t struct */
H5FL_DEFINE_STATIC(H5FD_sec2_t);
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_init_interface
*
* Purpose: Initializes any interface-specific data or routines.
*
* Return: Success: The driver ID for the sec2 driver.
* Failure: Negative
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD_sec2_init_interface(void)
{
FUNC_ENTER_NOAPI_NOINIT_NOERR
FUNC_LEAVE_NOAPI(H5FD_sec2_init())
} /* H5FD_sec2_init_interface() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_init
*
* Purpose: Initialize this driver by registering the driver with the
* library.
*
* Return: Success: The driver ID for the sec2 driver
* Failure: H5I_INVALID_HID
*
* Programmer: Robb Matzke
* Thursday, July 29, 1999
*
*-------------------------------------------------------------------------
*/
hid_t
H5FD_sec2_init(void)
{
hid_t ret_value = H5I_INVALID_HID; /* Return value */
FUNC_ENTER_NOAPI(H5I_INVALID_HID)
if (H5I_VFL != H5I_get_type(H5FD_SEC2_g))
H5FD_SEC2_g = H5FD_register(&H5FD_sec2_g, sizeof(H5FD_class_t), FALSE);
/* Set return value */
ret_value = H5FD_SEC2_g;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_sec2_init() */
/*---------------------------------------------------------------------------
* Function: H5FD_sec2_term
*
* Purpose: Shut down the VFD
*
* Returns: <none>
*
* Programmer: Quincey Koziol
* Friday, Jan 30, 2004
*
*---------------------------------------------------------------------------
*/
void
H5FD_sec2_term(void)
{
FUNC_ENTER_NOAPI_NOINIT_NOERR
/* Reset VFL ID */
H5FD_SEC2_g = 0;
FUNC_LEAVE_NOAPI_VOID
} /* end H5FD_sec2_term() */
/*-------------------------------------------------------------------------
* Function: H5Pset_fapl_sec2
*
* Purpose: Modify the file access property list to use the H5FD_SEC2
* driver defined in this source file. There are no driver
* specific properties.
*
* Return: SUCCEED/FAIL
*
* Programmer: Robb Matzke
* Thursday, February 19, 1998
*
*-------------------------------------------------------------------------
*/
herr_t
H5Pset_fapl_sec2(hid_t fapl_id)
{
H5P_genplist_t *plist; /* Property list pointer */
herr_t ret_value;
FUNC_ENTER_API(FAIL)
H5TRACE1("e", "i", fapl_id);
if (NULL == (plist = H5P_object_verify(fapl_id, H5P_FILE_ACCESS)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access property list")
ret_value = H5P_set_driver(plist, H5FD_SEC2, NULL);
done:
FUNC_LEAVE_API(ret_value)
} /* end H5Pset_fapl_sec2() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_open
*
* Purpose: Create and/or opens a file as an HDF5 file.
*
* Return: Success: A pointer to a new file data structure. The
* public fields will be initialized by the
* caller, which is always H5FD_open().
* Failure: NULL
*
* Programmer: Robb Matzke
* Thursday, July 29, 1999
*
*-------------------------------------------------------------------------
*/
static H5FD_t *
H5FD_sec2_open(const char *name, unsigned flags, hid_t fapl_id, haddr_t maxaddr)
{
H5FD_sec2_t *file = NULL; /* sec2 VFD info */
int fd = -1; /* File descriptor */
int o_flags; /* Flags for open() call */
#ifdef H5_HAVE_WIN32_API
struct _BY_HANDLE_FILE_INFORMATION fileinfo;
#endif
h5_stat_t sb;
H5FD_t * ret_value = NULL; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
/* Sanity check on file offsets */
HDcompile_assert(sizeof(HDoff_t) >= sizeof(size_t));
/* Check arguments */
if (!name || !*name)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, NULL, "invalid file name")
if (0 == maxaddr || HADDR_UNDEF == maxaddr)
HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, NULL, "bogus maxaddr")
if (ADDR_OVERFLOW(maxaddr))
HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, NULL, "bogus maxaddr")
/* Build the open flags */
o_flags = (H5F_ACC_RDWR & flags) ? O_RDWR : O_RDONLY;
if (H5F_ACC_TRUNC & flags)
o_flags |= O_TRUNC;
if (H5F_ACC_CREAT & flags)
o_flags |= O_CREAT;
if (H5F_ACC_EXCL & flags)
o_flags |= O_EXCL;
/* Open the file */
if ((fd = HDopen(name, o_flags, 0666)) < 0) {
int myerrno = errno;
HGOTO_ERROR(
H5E_FILE, H5E_CANTOPENFILE, NULL,
"unable to open file: name = '%s', errno = %d, error message = '%s', flags = %x, o_flags = %x",
name, myerrno, HDstrerror(myerrno), flags, (unsigned)o_flags);
} /* end if */
if (HDfstat(fd, &sb) < 0)
HSYS_GOTO_ERROR(H5E_FILE, H5E_BADFILE, NULL, "unable to fstat file")
/* Create the new file struct */
if (NULL == (file = H5FL_CALLOC(H5FD_sec2_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "unable to allocate file struct")
file->fd = fd;
H5_CHECKED_ASSIGN(file->eof, haddr_t, sb.st_size, h5_stat_size_t);
file->pos = HADDR_UNDEF;
file->op = OP_UNKNOWN;
#ifdef H5_HAVE_WIN32_API
file->hFile = (HANDLE)_get_osfhandle(fd);
if (INVALID_HANDLE_VALUE == file->hFile)
HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to get Windows file handle")
if (!GetFileInformationByHandle((HANDLE)file->hFile, &fileinfo))
HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "unable to get Windows file information")
file->nFileIndexHigh = fileinfo.nFileIndexHigh;
file->nFileIndexLow = fileinfo.nFileIndexLow;
file->dwVolumeSerialNumber = fileinfo.dwVolumeSerialNumber;
#else /* H5_HAVE_WIN32_API */
file->device = sb.st_dev;
file->inode = sb.st_ino;
#endif /* H5_HAVE_WIN32_API */
/* Retain a copy of the name used to open the file, for possible error reporting */
HDstrncpy(file->filename, name, sizeof(file->filename));
file->filename[sizeof(file->filename) - 1] = '\0';
/* Check for non-default FAPL */
if (H5P_FILE_ACCESS_DEFAULT != fapl_id) {
H5P_genplist_t *plist; /* Property list pointer */
/* Get the FAPL */
if (NULL == (plist = (H5P_genplist_t *)H5I_object(fapl_id)))
HGOTO_ERROR(H5E_VFL, H5E_BADTYPE, NULL, "not a file access property list")
/* This step is for h5repart tool only. If user wants to change file driver from
* family to sec2 while using h5repart, this private property should be set so that
* in the later step, the library can ignore the family driver information saved
* in the superblock.
*/
if (H5P_exist_plist(plist, H5F_ACS_FAMILY_TO_SEC2_NAME) > 0)
if (H5P_get(plist, H5F_ACS_FAMILY_TO_SEC2_NAME, &file->fam_to_sec2) < 0)
HGOTO_ERROR(H5E_VFL, H5E_CANTGET, NULL, "can't get property of changing family to sec2")
} /* end if */
/* Set return value */
ret_value = (H5FD_t *)file;
done:
if (NULL == ret_value) {
if (fd >= 0)
HDclose(fd);
if (file)
file = H5FL_FREE(H5FD_sec2_t, file);
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_sec2_open() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_close
*
* Purpose: Closes an HDF5 file.
*
* Return: Success: SUCCEED
* Failure: FAIL, file not closed.
*
* Programmer: Robb Matzke
* Thursday, July 29, 1999
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD_sec2_close(H5FD_t *_file)
{
H5FD_sec2_t *file = (H5FD_sec2_t *)_file;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
/* Sanity check */
HDassert(file);
/* Close the underlying file */
if (HDclose(file->fd) < 0)
HSYS_GOTO_ERROR(H5E_IO, H5E_CANTCLOSEFILE, FAIL, "unable to close file")
/* Release the file info */
file = H5FL_FREE(H5FD_sec2_t, file);
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_sec2_close() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_cmp
*
* Purpose: Compares two files belonging to this driver using an
* arbitrary (but consistent) ordering.
*
* Return: Success: A value like strcmp()
* Failure: never fails (arguments were checked by the
* caller).
*
* Programmer: Robb Matzke
* Thursday, July 29, 1999
*
*-------------------------------------------------------------------------
*/
static int
H5FD_sec2_cmp(const H5FD_t *_f1, const H5FD_t *_f2)
{
const H5FD_sec2_t *f1 = (const H5FD_sec2_t *)_f1;
const H5FD_sec2_t *f2 = (const H5FD_sec2_t *)_f2;
int ret_value = 0;
FUNC_ENTER_NOAPI_NOINIT_NOERR
#ifdef H5_HAVE_WIN32_API
if (f1->dwVolumeSerialNumber < f2->dwVolumeSerialNumber)
HGOTO_DONE(-1)
if (f1->dwVolumeSerialNumber > f2->dwVolumeSerialNumber)
HGOTO_DONE(1)
if (f1->nFileIndexHigh < f2->nFileIndexHigh)
HGOTO_DONE(-1)
if (f1->nFileIndexHigh > f2->nFileIndexHigh)
HGOTO_DONE(1)
if (f1->nFileIndexLow < f2->nFileIndexLow)
HGOTO_DONE(-1)
if (f1->nFileIndexLow > f2->nFileIndexLow)
HGOTO_DONE(1)
#else /* H5_HAVE_WIN32_API */
#ifdef H5_DEV_T_IS_SCALAR
if (f1->device < f2->device)
HGOTO_DONE(-1)
if (f1->device > f2->device)
HGOTO_DONE(1)
#else /* H5_DEV_T_IS_SCALAR */
/* If dev_t isn't a scalar value on this system, just use memcmp to
* determine if the values are the same or not. The actual return value
* shouldn't really matter...
*/
if (HDmemcmp(&(f1->device), &(f2->device), sizeof(dev_t)) < 0)
HGOTO_DONE(-1)
if (HDmemcmp(&(f1->device), &(f2->device), sizeof(dev_t)) > 0)
HGOTO_DONE(1)
#endif /* H5_DEV_T_IS_SCALAR */
if (f1->inode < f2->inode)
HGOTO_DONE(-1)
if (f1->inode > f2->inode)
HGOTO_DONE(1)
#endif /* H5_HAVE_WIN32_API */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_sec2_cmp() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_query
*
* Purpose: Set the flags that this VFL driver is capable of supporting.
* (listed in H5FDpublic.h)
*
* Return: SUCCEED (Can't fail)
*
* Programmer: Quincey Koziol
* Friday, August 25, 2000
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD_sec2_query(const H5FD_t *_file, unsigned long *flags /* out */)
{
const H5FD_sec2_t *file = (const H5FD_sec2_t *)_file; /* sec2 VFD info */
FUNC_ENTER_NOAPI_NOINIT_NOERR
/* Set the VFL feature flags that this driver supports */
if (flags) {
*flags = 0;
*flags |= H5FD_FEAT_AGGREGATE_METADATA; /* OK to aggregate metadata allocations */
*flags |= H5FD_FEAT_ACCUMULATE_METADATA; /* OK to accumulate metadata for faster writes */
*flags |= H5FD_FEAT_DATA_SIEVE; /* OK to perform data sieving for faster raw data reads & writes */
*flags |= H5FD_FEAT_AGGREGATE_SMALLDATA; /* OK to aggregate "small" raw data allocations */
*flags |= H5FD_FEAT_POSIX_COMPAT_HANDLE; /* VFD handle is POSIX I/O call compatible */
/* Check for flags that are set by h5repart */
if (file && file->fam_to_sec2)
*flags |= H5FD_FEAT_IGNORE_DRVRINFO; /* Ignore the driver info when file is opened (which
eliminates it) */
} /* end if */
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5FD_sec2_query() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_get_eoa
*
* Purpose: Gets the end-of-address marker for the file. The EOA marker
* is the first address past the last byte allocated in the
* format address space.
*
* Return: The end-of-address marker.
*
* Programmer: Robb Matzke
* Monday, August 2, 1999
*
*-------------------------------------------------------------------------
*/
static haddr_t
H5FD_sec2_get_eoa(const H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type)
{
const H5FD_sec2_t *file = (const H5FD_sec2_t *)_file;
FUNC_ENTER_NOAPI_NOINIT_NOERR
FUNC_LEAVE_NOAPI(file->eoa)
} /* end H5FD_sec2_get_eoa() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_set_eoa
*
* Purpose: Set the end-of-address marker for the file. This function is
* called shortly after an existing HDF5 file is opened in order
* to tell the driver where the end of the HDF5 data is located.
*
* Return: SUCCEED (Can't fail)
*
* Programmer: Robb Matzke
* Thursday, July 29, 1999
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD_sec2_set_eoa(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, haddr_t addr)
{
H5FD_sec2_t *file = (H5FD_sec2_t *)_file;
FUNC_ENTER_NOAPI_NOINIT_NOERR
file->eoa = addr;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5FD_sec2_set_eoa() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_get_eof
*
* Purpose: Returns the end-of-file marker, which is the greater of
* either the filesystem end-of-file or the HDF5 end-of-address
* markers.
*
* Return: End of file address, the first address past the end of the
* "file", either the filesystem file or the HDF5 file.
*
* Programmer: Robb Matzke
* Thursday, July 29, 1999
*
*-------------------------------------------------------------------------
*/
static haddr_t
H5FD_sec2_get_eof(const H5FD_t *_file)
{
const H5FD_sec2_t *file = (const H5FD_sec2_t *)_file;
FUNC_ENTER_NOAPI_NOINIT_NOERR
FUNC_LEAVE_NOAPI(MAX(file->eof, file->eoa))
} /* end H5FD_sec2_get_eof() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_get_handle
*
* Purpose: Returns the file handle of sec2 file driver.
*
* Returns: SUCCEED/FAIL
*
* Programmer: Raymond Lu
* Sept. 16, 2002
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD_sec2_get_handle(H5FD_t *_file, hid_t H5_ATTR_UNUSED fapl, void **file_handle)
{
H5FD_sec2_t *file = (H5FD_sec2_t *)_file;
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI_NOINIT
if (!file_handle)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid")
*file_handle = &(file->fd);
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_sec2_get_handle() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_read
*
* Purpose: Reads SIZE bytes of data from FILE beginning at address ADDR
* into buffer BUF according to data transfer properties in
* DXPL_ID.
*
* Return: Success: SUCCEED. Result is stored in caller-supplied
* buffer BUF.
* Failure: FAIL, Contents of buffer BUF are undefined.
*
* Programmer: Robb Matzke
* Thursday, July 29, 1999
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD_sec2_read(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNUSED dxpl_id, haddr_t addr,
size_t size, void *buf /*out*/)
{
H5FD_sec2_t *file = (H5FD_sec2_t *)_file;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
HDassert(file && file->pub.cls);
HDassert(buf);
/* Check for overflow conditions */
if (!H5F_addr_defined(addr))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "addr undefined, addr = %llu", (unsigned long long)addr)
if (REGION_OVERFLOW(addr, size))
HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr overflow, addr = %llu", (unsigned long long)addr)
/* Seek to the correct location */
if (addr != file->pos || OP_READ != file->op) {
if (HDlseek(file->fd, (HDoff_t)addr, SEEK_SET) < 0)
HSYS_GOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to seek to proper position")
} /* end if */
/* Read data, being careful of interrupted system calls, partial results,
* and the end of the file.
*/
while (size > 0) {
h5_posix_io_t bytes_in = 0; /* # of bytes to read */
h5_posix_io_ret_t bytes_read = -1; /* # of bytes actually read */
/* Trying to read more bytes than the return type can handle is
* undefined behavior in POSIX.
*/
if (size > H5_POSIX_MAX_IO_BYTES)
bytes_in = H5_POSIX_MAX_IO_BYTES;
else
bytes_in = (h5_posix_io_t)size;
do {
bytes_read = HDread(file->fd, buf, bytes_in);
} while (-1 == bytes_read && EINTR == errno);
if (-1 == bytes_read) { /* error */
int myerrno = errno;
time_t mytime = HDtime(NULL);
HDoff_t myoffset = HDlseek(file->fd, (HDoff_t)0, SEEK_CUR);
HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL,
"file read failed: time = %s, filename = '%s', file descriptor = %d, errno = %d, "
"error message = '%s', buf = %p, total read size = %llu, bytes this sub-read = %llu, "
"bytes actually read = %llu, offset = %llu",
HDctime(&mytime), file->filename, file->fd, myerrno, HDstrerror(myerrno), buf,
(unsigned long long)size, (unsigned long long)bytes_in,
(unsigned long long)bytes_read, (unsigned long long)myoffset);
} /* end if */
if (0 == bytes_read) {
/* end of file but not end of format address space */
HDmemset(buf, 0, size);
break;
} /* end if */
HDassert(bytes_read >= 0);
HDassert((size_t)bytes_read <= size);
size -= (size_t)bytes_read;
addr += (haddr_t)bytes_read;
buf = (char *)buf + bytes_read;
} /* end while */
/* Update current position */
file->pos = addr;
file->op = OP_READ;
done:
if (ret_value < 0) {
/* Reset last file I/O information */
file->pos = HADDR_UNDEF;
file->op = OP_UNKNOWN;
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_sec2_read() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_write
*
* Purpose: Writes SIZE bytes of data to FILE beginning at address ADDR
* from buffer BUF according to data transfer properties in
* DXPL_ID.
*
* Return: SUCCEED/FAIL
*
* Programmer: Robb Matzke
* Thursday, July 29, 1999
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD_sec2_write(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNUSED dxpl_id, haddr_t addr,
size_t size, const void *buf)
{
H5FD_sec2_t *file = (H5FD_sec2_t *)_file;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
HDassert(file && file->pub.cls);
HDassert(buf);
/* Check for overflow conditions */
if (!H5F_addr_defined(addr))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "addr undefined, addr = %llu", (unsigned long long)addr)
if (REGION_OVERFLOW(addr, size))
HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr overflow, addr = %llu, size = %llu",
(unsigned long long)addr, (unsigned long long)size)
/* Seek to the correct location */
if (addr != file->pos || OP_WRITE != file->op) {
if (HDlseek(file->fd, (HDoff_t)addr, SEEK_SET) < 0)
HSYS_GOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to seek to proper position")
} /* end if */
/* Write the data, being careful of interrupted system calls and partial
* results
*/
while (size > 0) {
h5_posix_io_t bytes_in = 0; /* # of bytes to write */
h5_posix_io_ret_t bytes_wrote = -1; /* # of bytes written */
/* Trying to write more bytes than the return type can handle is
* undefined behavior in POSIX.
*/
if (size > H5_POSIX_MAX_IO_BYTES)
bytes_in = H5_POSIX_MAX_IO_BYTES;
else
bytes_in = (h5_posix_io_t)size;
do {
bytes_wrote = HDwrite(file->fd, buf, bytes_in);
} while (-1 == bytes_wrote && EINTR == errno);
if (-1 == bytes_wrote) { /* error */
int myerrno = errno;
time_t mytime = HDtime(NULL);
HDoff_t myoffset = HDlseek(file->fd, (HDoff_t)0, SEEK_CUR);
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL,
"file write failed: time = %s, filename = '%s', file descriptor = %d, errno = %d, "
"error message = '%s', buf = %p, total write size = %llu, bytes this sub-write = "
"%llu, bytes actually written = %llu, offset = %llu",
HDctime(&mytime), file->filename, file->fd, myerrno, HDstrerror(myerrno), buf,
(unsigned long long)size, (unsigned long long)bytes_in,
(unsigned long long)bytes_wrote, (unsigned long long)myoffset);
} /* end if */
HDassert(bytes_wrote > 0);
HDassert((size_t)bytes_wrote <= size);
size -= (size_t)bytes_wrote;
addr += (haddr_t)bytes_wrote;
buf = (const char *)buf + bytes_wrote;
} /* end while */
/* Update current position and eof */
file->pos = addr;
file->op = OP_WRITE;
if (file->pos > file->eof)
file->eof = file->pos;
done:
if (ret_value < 0) {
/* Reset last file I/O information */
file->pos = HADDR_UNDEF;
file->op = OP_UNKNOWN;
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_sec2_write() */
/*-------------------------------------------------------------------------
* Function: H5FD_sec2_truncate
*
* Purpose: Makes sure that the true file size is the same (or larger)
* than the end-of-address.
*
* Return: SUCCEED/FAIL
*
* Programmer: Robb Matzke
* Wednesday, August 4, 1999
*
*-------------------------------------------------------------------------
*/
static herr_t
H5FD_sec2_truncate(H5FD_t *_file, hid_t H5_ATTR_UNUSED dxpl_id, hbool_t H5_ATTR_UNUSED closing)
{
H5FD_sec2_t *file = (H5FD_sec2_t *)_file;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
HDassert(file);
/* Extend the file to make sure it's large enough */
if (!H5F_addr_eq(file->eoa, file->eof)) {
#ifdef H5_HAVE_WIN32_API
LARGE_INTEGER li; /* 64-bit (union) integer for SetFilePointer() call */
DWORD dwPtrLow; /* Low-order pointer bits from SetFilePointer()
* Only used as an error code here.
*/
DWORD dwError; /* DWORD error code from GetLastError() */
BOOL bError; /* Boolean error flag */
/* Windows uses this odd QuadPart union for 32/64-bit portability */
li.QuadPart = (__int64)file->eoa;
/* Extend the file to make sure it's large enough.
*
* Since INVALID_SET_FILE_POINTER can technically be a valid return value
* from SetFilePointer(), we also need to check GetLastError().
*/
dwPtrLow = SetFilePointer(file->hFile, li.LowPart, &li.HighPart, FILE_BEGIN);
if (INVALID_SET_FILE_POINTER == dwPtrLow) {
dwError = GetLastError();
if (dwError != NO_ERROR)
HGOTO_ERROR(H5E_FILE, H5E_FILEOPEN, FAIL, "unable to set file pointer")
}
bError = SetEndOfFile(file->hFile);
if (0 == bError)
HGOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to extend file properly")
#else /* H5_HAVE_WIN32_API */
if (-1 == HDftruncate(file->fd, (HDoff_t)file->eoa))
HSYS_GOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "unable to extend file properly")
#endif /* H5_HAVE_WIN32_API */
/* Update the eof value */
file->eof = file->eoa;
/* Reset last file I/O information */
file->pos = HADDR_UNDEF;
file->op = OP_UNKNOWN;
} /* end if */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_sec2_truncate() */
|