-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy pathlib_tc.c
executable file
·3792 lines (3523 loc) · 110 KB
/
lib_tc.c
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
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Lessfs: A data deduplicating filesystem.
* Copyright (C) 2008 Mark Ruijter <[email protected]>
*
* This program is free software.
* You can redistribute lessfs and/or modify it under the terms of either
* (1) the GNU General Public License; either version 3 of the License,
* or (at your option) any later version as published by
* the Free Software Foundation; or (2) obtain a commercial license
* by contacting the Author.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifndef LFATAL
#include "lib_log.h"
#endif
#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <sys/types.h>
#include <fuse.h>
#include <fcntl.h>
#include <pthread.h>
#include <tcutil.h>
#include <tcbdb.h>
#include <tchdb.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <aio.h>
#include <mhash.h>
#include <mutils/mhash.h>
#include <sys/time.h>
#include "lib_safe.h"
#include "lib_cfg.h"
#include "retcodes.h"
#ifdef LZO
#include "lib_lzo.h"
#endif
#include "lib_qlz.h"
#include "lib_tc.h"
#include "lib_crypto.h"
#include "file_io.h"
extern char *logname;
extern char *function;
extern int debug;
extern int BLKSIZE;
extern int max_threads;
extern char *passwd;
TCHDB *dbb = NULL;
TCHDB *dbu = NULL;
TCHDB *dbp = NULL;
TCBDB *dbl = NULL; // Hardlink
TCHDB *dbs = NULL; // Symlink
TCHDB *dbdta = NULL;
TCBDB *dbdirent = NULL;
TCBDB *freelist = NULL; // Free list for file_io
TCTREE *workqtree;
TCTREE *delayedqtree;
TCTREE *readcachetree;
TCTREE *metatree;
TCTREE *hashtree;
int fdbdta = 0;
unsigned long long nextoffset = 0;
int written = 0;
static pthread_mutex_t global_lock_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t write_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t meta_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t hash_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t offset_mutex = PTHREAD_MUTEX_INITIALIZER;
const char *write_lockedby;
const char *global_lockedby;
const char *meta_lockedby;
const char *hash_lockedby;
const char *offset_lockedby;
u_int32_t db_flags, env_flags;
#define die_dberr(f...) { LFATAL(f); exit(EXIT_DBERR); }
#define die_dataerr(f...) { LFATAL(f); exit(EXIT_DATAERR); }
#define die_syserr() { LFATAL("Fatal system error : %s",strerror(errno)); exit(EXIT_SYSTEM); }
unsigned char *thash(unsigned char *buf, int size, int thread_number)
{
MHASH td[MAX_ALLOWED_THREADS];
unsigned char *hash[thread_number];
td[thread_number] = mhash_init(config->selected_hash);
if (td[thread_number] == MHASH_FAILED) exit(1);
mhash(td[thread_number], buf, size);
hash[thread_number] = mhash_end(td[thread_number]);
return hash[thread_number];
}
void logiv(char *msg, unsigned char *bhash)
{
char *ascii_hash = NULL;
int n;
char *p1, *p2;
for (n = 0; n < 8; n++) {
p1 = as_sprintf("%02X", bhash[n]);
if (n == 0) {
ascii_hash = s_strdup(p1);
} else {
p2 = s_strdup(ascii_hash);
free(ascii_hash);
ascii_hash = as_sprintf("%s%s", p2, p1);
free(p2);
}
free(p1);
}
LDEBUG("%s : %s", msg, ascii_hash);
free(ascii_hash);
}
#ifdef DEBUG
void loghash(char *msg, unsigned char *bhash)
{
char *ascii_hash = NULL;
int n;
char *p1, *p2;
for (n = 0; n < config->hashlen ; n++) {
p1 = as_sprintf("%02X", bhash[n]);
if (n == 0) {
ascii_hash = s_strdup(p1);
} else {
p2 = s_strdup(ascii_hash);
free(ascii_hash);
ascii_hash = as_sprintf("%s%s", p2, p1);
free(p2);
}
free(p1);
}
LDEBUG("%s : %s", msg, ascii_hash);
free(ascii_hash);
}
# else
void loghash(char *msg, unsigned char *bhash)
{
}
# endif
void log_fatal_hash(char *msg, unsigned char *bhash)
{
char *ascii_hash = NULL;
int n;
char *p1, *p2;
for (n = 0; n < config->hashlen ; n++) {
p1 = as_sprintf("%02X", bhash[n]);
if (n == 0) {
ascii_hash = s_strdup(p1);
} else {
p2 = s_strdup(ascii_hash);
free(ascii_hash);
ascii_hash = as_sprintf("%s%s", p2, p1);
free(p2);
}
free(p1);
}
LFATAL("%s : %s", msg, ascii_hash);
free(ascii_hash);
}
TCHDB *hashdb_open(char *dbpath, int cacherow,
unsigned long long bucketsize)
{
TCHDB *hdb;
int ecode;
FUNC;
hdb = tchdbnew();
if (cacherow > 0) {
tchdbsetcache(hdb, cacherow);
}
if (config->defrag == 1) {
if (!tchdbsetdfunit(hdb, 1)) {
ecode = tchdbecode(hdb);
die_dberr("Error on setting defragmentation : %s",tchdberrmsg(ecode));
}
}
tchdbsetmutex(hdb);
tchdbtune(hdb, bucketsize, 0, 0, HDBTLARGE);
//if (!tchdbopen(hdb, dbpath, HDBOWRITER | HDBOCREAT| HDBOTSYNC)) {
if (!tchdbopen(hdb, dbpath, HDBOWRITER | HDBOCREAT)) {
ecode = tchdbecode(hdb);
fprintf(stderr,"Error while opening database : %s : %s\n", dbpath, tchdberrmsg(ecode));
die_dberr("open error: %s", tchdberrmsg(ecode));
}
EFUNC;
return hdb;
}
void tc_defrag()
{
start_flush_commit();
write_lock((char *)__PRETTY_FUNCTION__);
if (!tchdboptimize(dbb, atol(config->fileblockbs), 0, 0, HDBTLARGE))
LINFO("fileblock.tch not optimized");
if (!tchdboptimize(dbu, atol(config->blockusagebs), 0, 0, HDBTLARGE))
LINFO("blockusage.tch not optimized");
if (!tchdboptimize(dbp, atol(config->metabs), 0, 0, HDBTLARGE))
LINFO("metadata.tcb not optimized");
if (!tchdboptimize(dbs, atol(config->symlinkbs), 0, 0, HDBTLARGE))
LINFO("symlink.tch not optimized");
if (NULL != config->blockdatabs) {
if (!tchdboptimize
(dbdta, atol(config->blockdatabs), 0, 0, HDBTLARGE))
LINFO("blockdata.tch not optimized");
} else {
if (!tcbdboptimize(freelist, 0, 0, atol(config->freelistbs), -1, -1, BDBTLARGE))
LINFO("freelist.tcb not optimized");
}
if (!tcbdboptimize
(dbdirent, 0, 0, atol(config->direntbs), -1, -1, BDBTLARGE))
LINFO("dirent.tcb not optimized");
if (!tcbdboptimize
(dbl, 0, 0, atol(config->hardlinkbs), -1, -1, BDBTLARGE))
LINFO("hardlink.tcb not optimized");
end_flush_commit();
release_write_lock();
}
void check_datafile_sanity()
{
struct stat stbuf;
unsigned long long rsize;
if (-1 == stat(config->blockdata, &stbuf) )
die_dataerr("Failed to stat %s\n",config->blockdata);
if ( stbuf.st_size > nextoffset ) {
LDEBUG("nextoffset = %llu, real size = %llu",nextoffset,stbuf.st_size);
rsize=round_512(nextoffset);
if ( -1 == ftruncate(fdbdta, rsize)) die_dataerr("Failed to truncate %s to %llu bytes\n",config->blockdata,rsize);
}
}
void tc_open(bool defrag, bool createpath)
{
char *dbpath;
int ecode;
struct stat stbuf;
char *sp;
char *hashstr;
DBT *data;
FUNC;
dbpath = as_sprintf("%s/fileblock.tch", config->fileblock);
if ( createpath ) mkpath(config->fileblock,0744);
LDEBUG("Open database %s", dbpath);
dbb = hashdb_open(dbpath, 2621440, atol(config->fileblockbs));
free(dbpath);
dbpath = as_sprintf("%s/blockusage.tch", config->blockusage);
if ( createpath ) mkpath(config->blockusage,0744);
LDEBUG("Open database %s", dbpath);
dbu = hashdb_open(dbpath, 2621440, atol(config->blockusagebs));
free(dbpath);
dbpath = as_sprintf("%s/metadata.tcb", config->meta);
if ( createpath ) mkpath(config->meta,0744);
LDEBUG("Open database %s", dbpath);
dbp = hashdb_open(dbpath, 1000, atol(config->metabs));
free(dbpath);
if (NULL != config->blockdatabs) {
dbpath = as_sprintf("%s/blockdata.tch", config->blockdata);
if ( createpath ) mkpath(config->blockdata,0744);
LDEBUG("Open database %s", dbpath);
dbdta = hashdb_open(dbpath, 10, atol(config->blockdatabs));
free(dbpath);
} else {
sp=s_dirname(config->blockdata);
if ( createpath ) mkpath(sp,0744);
free(sp);
freelist = tcbdbnew();
tcbdbsetmutex(freelist);
tcbdbtune(freelist, 0, 0, atol(config->freelistbs), -1, -1,
BDBTLARGE);
/* The dirent database is a B-TREE DB with cursors */
dbpath = as_sprintf("%s/freelist.tcb", config->freelist);
if ( createpath ) mkpath(config->freelist,0744);
if (config->defrag == 1) {
if (!tcbdbsetdfunit(freelist, 1)) {
ecode = tcbdbecode(freelist);
die_dberr("set defrag error: %s", tcbdberrmsg(ecode));
}
}
LDEBUG("Open database %s", dbpath);
//if (!tcbdbopen(freelist, dbpath, BDBOWRITER | BDBOCREAT|BDBOTSYNC)) {
if (!tcbdbopen(freelist, dbpath, BDBOWRITER | BDBOCREAT)) {
ecode = tcbdbecode(freelist);
die_dberr("open error: %s", tcbdberrmsg(ecode));
}
free(dbpath);
}
dbpath = as_sprintf("%s/symlink.tch", config->symlink);
if ( createpath ) mkpath(config->symlink,0744);
LDEBUG("Open database %s", dbpath);
dbs = hashdb_open(dbpath, 10, atol(config->symlinkbs));
free(dbpath);
dbdirent = tcbdbnew();
tcbdbsetmutex(dbdirent);
tcbdbtune(dbdirent, 0, 0, atol(config->direntbs), -1, -1, BDBTLARGE);
/* The dirent database is a B-TREE DB with cursors */
dbpath = as_sprintf("%s/dirent.tcb", config->dirent);
if ( createpath ) mkpath(config->dirent,0744);
if (config->defrag == 1) {
if (!tcbdbsetdfunit(dbdirent, 1)) {
ecode = tcbdbecode(dbdirent);
die_dberr("set defrag error: %s", tcbdberrmsg(ecode));
}
}
LDEBUG("Open database %s", dbpath);
if (!tcbdbopen(dbdirent, dbpath, BDBOWRITER | BDBOCREAT|BDBOTSYNC)) {
ecode = tcbdbecode(dbdirent);
die_dberr("open error: %s", tcbdberrmsg(ecode));
}
free(dbpath);
dbl = tcbdbnew();
tcbdbsetmutex(dbl);
tcbdbtune(dbl, 0, 0, atol(config->hardlinkbs), -1, -1, BDBTLARGE);
/* The dbl database is a B-TREE DB with cursors */
dbpath = as_sprintf("%s/hardlink.tcb", config->hardlink);
if ( createpath ) mkpath(config->hardlink,0744);
LDEBUG("Open database %s", dbpath);
if (config->defrag == 1) {
if (!tcbdbsetdfunit(dbl, 1)) {
ecode = tcbdbecode(dbl);
die_dberr("set defrag error: %s", tcbdberrmsg(ecode));
}
}
if (!tcbdbopen(dbl, dbpath, BDBOWRITER | BDBOCREAT|BDBOTSYNC)) {
ecode = tcbdbecode(dbdirent);
die_dberr("open error: %s", tcbdberrmsg(ecode));
}
free(dbpath);
if (!defrag) {
workqtree=tctreenew();
readcachetree=tctreenew();
hashtree=tctreenew();
delayedqtree=tctreenew();
metatree=tctreenew();
if (NULL == config->blockdatabs) {
if (-1 ==
(fdbdta =
s_open2(config->blockdata, O_CREAT | O_RDWR, S_IRWXU)))
die_syserr();
if (-1 == (stat(config->blockdata, &stbuf)))
die_syserr();
hashstr=as_sprintf("NEXTOFFSET");
config->nexthash=(char *)thash((unsigned char *)hashstr, strlen(hashstr),MAX_ALLOWED_THREADS);
data = search_dbdata(dbu, config->nexthash, config->hashlen);
if ( NULL == data ) {
LFATAL("Filesystem upgraded to support transactions");
nextoffset=stbuf.st_size;
} else {
memcpy(&nextoffset,data->data,sizeof(unsigned long long));
DBTfree(data);
}
if ( config->transactions ) {
check_datafile_sanity();
}
}
}
LDEBUG("All databases are open");
if ( config->transactions ) {
if (NULL != config->blockdatabs) {
tchdbtranbegin(dbdta);
} else tcbdbtranbegin(freelist);
tchdbtranbegin(dbu);
tchdbtranbegin(dbb);
tchdbtranbegin(dbs);
tchdbtranbegin(dbp);
tcbdbtranbegin(dbdirent);
tcbdbtranbegin(dbl);
}
EFUNC;
}
void hashdb_close(TCHDB * hdb)
{
int ecode;
FUNC;
/* close the database */
if (!tchdbclose(hdb)) {
ecode = tchdbecode(hdb);
die_dberr("close error: %s", tchdberrmsg(ecode));
}
/* delete the object */
tchdbdel(hdb);
}
void tc_close(bool defrag)
{
int ecode;
FUNC;
if (NULL == config->blockdatabs) {
bin_write_dbdata(dbu, config->nexthash, config->hashlen, (unsigned char *) &nextoffset,
sizeof(unsigned long long));
}
if ( config->transactions ) {
if (NULL != config->blockdatabs) {
if ( !tchdbtrancommit(dbdta)) die_dataerr("IO error, unable to commit blockdata transaction");
} else if ( !tcbdbtrancommit(freelist)) die_dataerr("IO error, unable to commit freelist transaction");
if ( !tchdbtrancommit(dbu)) die_dataerr("IO error, unable to commit blockusage transaction");
if ( !tchdbtrancommit(dbb)) die_dataerr("IO error, unable to commit fileblock transaction");
if ( !tchdbtrancommit(dbp)) die_dataerr("IO error, unable to commit metadata transaction");
if ( !tchdbtrancommit(dbs)) die_dataerr("IO error, unable to commit symlink transaction");
if ( !tcbdbtrancommit(dbdirent)) die_dataerr("IO error, unable to commit dbdirent transaction");
if ( !tcbdbtrancommit(dbl)) die_dataerr("IO error, unable to commit hardlink transaction");
}
hashdb_close(dbb);
hashdb_close(dbp);
hashdb_close(dbu);
hashdb_close(dbs);
if (NULL != config->blockdatabs) {
hashdb_close(dbdta);
} else {
/* close the B-TREE database */
if (!tcbdbclose(freelist)) {
ecode = tcbdbecode(freelist);
die_dberr("close error: %s", tchdberrmsg(ecode));
}
/* delete the object */
tcbdbdel(freelist);
}
/* close the B-TREE database */
if (!tcbdbclose(dbdirent)) {
ecode = tcbdbecode(dbdirent);
die_dberr("close error: %s", tchdberrmsg(ecode));
}
/* delete the object */
tcbdbdel(dbdirent);
/* close the B-TREE database */
if (!tcbdbclose(dbl)) {
ecode = tcbdbecode(dbl);
die_dberr("close error: %s", tchdberrmsg(ecode));
}
/* delete the object */
tcbdbdel(dbl);
if (!defrag) {
tctreeclear(workqtree);
tctreeclear(readcachetree);
tctreeclear(hashtree);
tctreeclear(delayedqtree);
tctreeclear(metatree);
if (NULL == config->blockdatabs) {
close(fdbdta);
free(config->nexthash);
}
}
EFUNC;
}
void die_lock_report(const char *msg, const char *msg2)
{
LFATAL("die_lock_report : timeout on %s, called by %s",msg2,msg);
if ( 0 == try_global_lock() ) {
LFATAL("global_lock : 0 (unset)");
} else {
LFATAL("global_lock : 1 (set)");
}
if ( 0 == try_write_lock() ) {
LFATAL("write_lock : 0 (unset)");
} else {
LFATAL("write_lock : 1 (set)");
}
if ( 0 == try_meta_lock() ) {
LFATAL("meta_lock : 0 (unset)");
} else {
LFATAL("meta_lock : 1 (set)");
}
if ( 0 == try_hash_lock() ) {
LFATAL("hash_lock : 0 (unset)");
} else {
LFATAL("hash_lock : 1 (set)");
}
die_dataerr("Abort after deadlock");
}
void get_global_lock(const char *msg)
{
FUNC;
#ifdef DBGLOCK
struct timespec deltatime;
deltatime.tv_sec = time(NULL)+GLOBAL_LOCK_TIMEOUT;
deltatime.tv_nsec = 0;
int err_code;
err_code = pthread_mutex_timedlock(&global_lock_mutex, &deltatime );
if (err_code != 0) {
die_lock_report(msg, __PRETTY_FUNCTION__);
}
#else
pthread_mutex_lock(&global_lock_mutex);
#endif
global_lockedby=msg;
EFUNC;
return;
}
void get_offset_lock(const char *msg)
{
FUNC;
#ifdef DBGLOCK
struct timespec deltatime;
deltatime.tv_sec = time(NULL)+GLOBAL_LOCK_TIMEOUT;
deltatime.tv_nsec = 0;
int err_code;
err_code = pthread_mutex_timedlock(&offset_mutex, &deltatime );
if (err_code != 0) {
die_lock_report(msg, __PRETTY_FUNCTION__);
}
#else
pthread_mutex_lock(&offset_mutex);
#endif
offset_lockedby=msg;
EFUNC;
return;
}
void meta_lock(const char *msg)
{
FUNC;
#ifdef DBGLOCK
struct timespec deltatime;
deltatime.tv_sec = time(NULL)+LOCK_TIMEOUT;
deltatime.tv_nsec = 0;
int err_code;
FUNC;
err_code = pthread_mutex_timedlock(&meta_mutex, &deltatime );
if (err_code != 0) {
die_lock_report(msg, __PRETTY_FUNCTION__);
}
#else
pthread_mutex_lock(&meta_mutex);
#endif
meta_lockedby=msg;
EFUNC;
return;
}
void get_hash_lock(const char *msg)
{
FUNC;
#ifdef DBGLOCK
struct timespec deltatime;
deltatime.tv_sec = time(NULL)+LOCK_TIMEOUT;
deltatime.tv_nsec = 0;
int err_code;
FUNC;
err_code = pthread_mutex_timedlock(&hash_mutex, &deltatime );
if (err_code != 0) {
die_lock_report(msg, __PRETTY_FUNCTION__);
}
#else
pthread_mutex_lock(&hash_mutex);
#endif
hash_lockedby=msg;
EFUNC;
return;
}
void write_lock(const char *msg)
{
FUNC;
#ifdef DBGLOCK
struct timespec deltatime;
deltatime.tv_sec = time(NULL)+LOCK_TIMEOUT;
deltatime.tv_nsec = 0;
int err_code;
err_code = pthread_mutex_timedlock(&write_mutex, &deltatime );
if (err_code != 0) {
die_lock_report(msg, __PRETTY_FUNCTION__);
}
#else
pthread_mutex_lock(&write_mutex);
#endif
write_lockedby=msg;
EFUNC;
return;
}
void release_write_lock()
{
FUNC;
pthread_mutex_unlock(&write_mutex);
EFUNC;
return;
}
void release_meta_lock()
{
FUNC;
pthread_mutex_unlock(&meta_mutex);
EFUNC;
return;
}
void release_hash_lock()
{
FUNC;
pthread_mutex_unlock(&hash_mutex);
EFUNC;
return;
}
void release_global_lock()
{
FUNC;
pthread_mutex_unlock(&global_lock_mutex);
EFUNC;
return;
}
void release_offset_lock()
{
FUNC;
pthread_mutex_unlock(&offset_mutex);
EFUNC;
return;
}
int try_write_lock()
{
int res;
res = pthread_mutex_trylock(&write_mutex);
return (res);
}
int try_meta_lock()
{
int res;
res = pthread_mutex_trylock(&meta_mutex);
return (res);
}
int try_hash_lock()
{
int res;
res = pthread_mutex_trylock(&hash_mutex);
return (res);
}
int try_global_lock()
{
int res;
FUNC;
res = pthread_mutex_trylock(&global_lock_mutex);
EFUNC;
return (res);
}
DBT *create_ddbuf(struct stat stbuf, char *filename, unsigned long long real_size)
{
DBT *ddbuf;
int len;
#ifdef ENABLE_CRYPTO
DBT *encrypted;
#endif
FUNC;
if (NULL != filename) {
len = sizeof(struct stat)+sizeof(unsigned long long) + strlen((char *) filename) + 1;
} else
len = sizeof(struct stat)+sizeof(unsigned long long) + 1;
ddbuf = s_malloc(sizeof(DBT));
ddbuf->size = len;
ddbuf->data = s_zmalloc(ddbuf->size);
memcpy(ddbuf->data, &stbuf, sizeof(struct stat));
memcpy(ddbuf->data+sizeof(struct stat), &real_size, sizeof(unsigned long long));
if (NULL != filename) {
memcpy(ddbuf->data + sizeof(struct stat)+sizeof(unsigned long long), (char *) filename,
strlen((char *) filename) + 1);
}
#ifdef ENABLE_CRYPTO
if (config->encryptmeta && config->encryptdata) {
encrypted = encrypt(ddbuf->data, ddbuf->size);
DBTfree(ddbuf);
EFUNC;
return encrypted;
}
#endif
EFUNC;
return ddbuf;
}
DBT *create_mem_ddbuf(MEMDDSTAT * ddstat)
{
DBT *ddbuf;
ddbuf = s_malloc(sizeof(DBT));
ddbuf->data = s_malloc(sizeof(MEMDDSTAT));
ddbuf->size = sizeof(MEMDDSTAT);
memcpy(ddbuf->data, ddstat, sizeof(MEMDDSTAT));
return ddbuf;
}
DDSTAT *value_to_ddstat(DBT * vddstat)
{
DDSTAT *ddbuf;
int filelen;
DBT *decrypted;
FUNC;
decrypted = vddstat;
#ifdef ENABLE_CRYPTO
if (config->encryptmeta && config->encryptdata) {
decrypted = decrypt(vddstat);
}
#endif
filelen = decrypted->size - (sizeof(struct stat)+sizeof(unsigned long long));
ddbuf = s_malloc(sizeof(DDSTAT));
memcpy(&ddbuf->stbuf, decrypted->data, sizeof(struct stat));
memcpy(&ddbuf->real_size, decrypted->data+sizeof(struct stat), sizeof(unsigned long long));
if (1 == filelen) {
memset(&ddbuf->filename, 0, MAX_POSIX_FILENAME_LEN);
} else {
memcpy(ddbuf->filename, &decrypted->data[(sizeof(struct stat)+sizeof(unsigned long long))],
filelen + 1);
}
LDEBUG("value_to_ddstat : return %llu", ddbuf->stbuf.st_ino);
#ifdef ENABLE_CRYPTO
if (config->encryptmeta && config->encryptdata) {
DBTfree(decrypted);
}
#endif
EFUNC;
return ddbuf;
}
void dbmknod(const char *path, mode_t mode, char *linkdest, dev_t rdev)
{
unsigned long long inode;
FUNC;
LDEBUG("dbmknod : %s", path);
inode = get_next_inode();
write_file_ent(path, inode, mode, linkdest, rdev);
EFUNC;
return;
}
void write_file_ent(const char *filename, unsigned long long inode,
mode_t mode, char *linkdest, dev_t rdev)
{
struct stat stbuf;
struct stat dirstat;
time_t thetime;
char *bname;
char *parentdir;
int res = 0;
DBT *ddbuf;
bool isdot = 0;
bool isrootdir = 0;
FUNC;
LDEBUG("write_file_ent : filename %s, inodenumber %llu", filename,
inode);
bname = s_basename((char *) filename);
parentdir = s_dirname((char *) filename);
if (0 == strcmp(filename, "/"))
isrootdir = 1;
LDEBUG("write_file_ent: parentdir = %s", parentdir);
write_nfi(inode + 1);
//Write stat structure to create an empty file.
stbuf.st_ino = inode;
stbuf.st_dev = 999988;
stbuf.st_mode = mode;
if (S_ISDIR(mode)) {
stbuf.st_nlink = 2;
} else stbuf.st_nlink = 1;
if (!isrootdir) {
if ( 0 == strcmp(filename,"/lost+found") ||\
0 == strcmp(filename,"/.lessfs")||\
0 == strcmp(filename,"/.lessfs/lessfs_stats")){
stbuf.st_uid = 0;
stbuf.st_gid = 0;
} else {
stbuf.st_uid = fuse_get_context()->uid;
stbuf.st_gid = fuse_get_context()->gid;
}
} else {
stbuf.st_uid = 0;
stbuf.st_gid = 0;
}
stbuf.st_rdev = rdev;
if (S_ISDIR(mode)) {
stbuf.st_size = 4096;
stbuf.st_blocks = 1;
} else {
stbuf.st_size = 0;
stbuf.st_blocks = 0;
}
if (S_ISLNK(mode)) {
stbuf.st_size = 3;
stbuf.st_blocks = 1;
}
stbuf.st_blksize = BLKSIZE;
thetime = time(NULL);
stbuf.st_atim.tv_sec = thetime;
stbuf.st_atim.tv_nsec=0;
stbuf.st_mtim.tv_sec = thetime;
stbuf.st_mtim.tv_nsec=0;
stbuf.st_ctim.tv_sec = thetime;
stbuf.st_ctim.tv_nsec=0;
ddbuf = create_ddbuf(stbuf, bname, 0);
LDEBUG("write_file_ent : write dbp inode %llu", inode);
bin_write_dbdata(dbp, &inode, sizeof(inode), ddbuf->data, ddbuf->size);
DBTfree(ddbuf);
if (NULL != linkdest) {
bin_write_dbdata(dbs, &inode, sizeof(unsigned long long), linkdest,
strlen(linkdest));
}
if (0 == strcmp(bname, "."))
isdot = 1;
if (0 == strcmp(bname, ".."))
isdot = 1;
recurse:
if (S_ISDIR(mode) && isdot != 1) {
btbin_write_dup(dbdirent, &stbuf.st_ino, sizeof(stbuf.st_ino),
&inode, sizeof(inode));
} else {
res = dbstat(parentdir, &dirstat);
btbin_write_dup(dbdirent, &dirstat.st_ino, sizeof(dirstat.st_ino),
&inode, sizeof(inode));
}
if (S_ISDIR(mode) && !isdot && !isrootdir) {
// Create the link inode to the previous directory
LDEBUG("Create the link inode to the previous directory");
isdot = 1;
// Only if !isrootdir. Nothing lower the root.
goto recurse;
}
free(parentdir);
free(bname);
EFUNC;
}
void write_nfi(unsigned long long nextinode)
{
bin_write_dbdata(dbp, (unsigned char *) "NFI", strlen("NFI"),
(unsigned char *) &nextinode, sizeof(nextinode));
return;
}
void formatfs()
{
struct stat stbuf;
unsigned long long nextinode = 0;
unsigned char *stiger;
char *blockdatadir;
#ifdef ENABLE_CRYPTO
CRYPTO crypto;
#endif
char *hashstr;
INUSE inuse;
FUNC;
if (NULL == dbp) {
tc_open(0,0);
}
hashstr=as_sprintf("%s%i",config->hash,config->hashlen);
stiger=thash((unsigned char *)hashstr, strlen(hashstr), MAX_ALLOWED_THREADS);
free(hashstr);
if ( config->blockdatabs != NULL ) {
update_inuse(stiger,1);
} else {
inuse.inuse=1;
inuse.size=0;
inuse.offset=0;
file_update_inuse(stiger,&inuse);
}
lessfs_trans_stamp();
free(stiger);
#ifdef ENABLE_CRYPTO
if (config->encryptdata) {
stiger=thash(config->passwd, strlen((char *) config->passwd),MAX_ALLOWED_THREADS);
loghash("store passwd as hash", stiger);
memcpy(&crypto.passwd, stiger, config->hashlen);
memcpy(&crypto.iv, config->iv, 8);
bin_write_dbdata(dbp, &nextinode, sizeof(unsigned long long),
&crypto, sizeof(CRYPTO));
free(stiger);
}
#endif
nextinode = 1;
if (NULL == config->blockdatabs) {
blockdatadir = s_dirname(config->blockdata);
stat(blockdatadir, &stbuf);
free(blockdatadir);
} else {
stat(config->blockdata, &stbuf);
}
write_nfi(nextinode);
fs_mkdir("/", stbuf.st_mode);
fs_mkdir("/.lessfs", stbuf.st_mode);
dbmknod("/.lessfs/lessfs_stats", 0755 | S_IFREG, NULL, 0);
tc_close(0);
return;
}
int get_dir_inode(char *dname, struct stat *stbuf)
{
char *p;
int depth = 0;
DDSTAT *filestat = NULL;
int res = 0;
unsigned long long inode = 1;
FUNC;
while (1) {
p = strchr(dname, '/');
if (NULL == p)
break;
p[0] = 0;
LDEBUG("p=%s", p);
if (depth == 0) {
LDEBUG("Lookup inode 1");
filestat =
dnode_bname_to_inode(&inode, sizeof(unsigned long long),
"/");
} else {
ddstatfree(filestat);
inode = stbuf->st_ino;
filestat =
dnode_bname_to_inode(&inode, sizeof(unsigned long long),
dname);
if (NULL == filestat) {
res = -ENOENT;
break;
}
}
memcpy(stbuf, &filestat->stbuf, sizeof(struct stat));
LDEBUG("After memcpy %llu", stbuf->st_ino);
p++;
depth++;
dname = p;
if (NULL == p)
break;
}
if (res == 0) {