-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy pathpsync.c
1326 lines (1122 loc) · 28 KB
/
psync.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
/*
* %ISC_START_LICENSE%
* ---------------------------------------------------------------------
* Copyright 2014-2018, Google, LLC
* Copyright (c) 2011-2015, Pittsburgh Supercomputing Center (PSC).
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all
* copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
* --------------------------------------------------------------------
* %END_LICENSE%
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/syscall.h>
#include <sys/un.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <sched.h>
#include <paths.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <term.h>
#include <unistd.h>
#include "pfl/alloc.h"
#include "pfl/cdefs.h"
#include "pfl/fmt.h"
#include "pfl/hashtbl.h"
#include "pfl/heap.h"
#include "pfl/opstats.h"
#include "pfl/list.h"
#include "pfl/listcache.h"
#include "pfl/log.h"
#include "pfl/net.h"
#include "pfl/pfl.h"
#include "pfl/pool.h"
#include "pfl/random.h"
#include "pfl/stat.h"
#include "pfl/str.h"
#include "pfl/thread.h"
#include "pfl/timerthr.h"
#include "pfl/types.h"
#include "pfl/umask.h"
#include "pfl/walk.h"
#include "options.h"
#include "psync.h"
#include "rpc.h"
#define PSYNC_BLKSZ (64 * 1024)
#define MODE_GET 0
#define MODE_PUT 1
struct work {
struct psc_listentry wk_lentry;
struct pfl_heap_entry wk_hpentry;
char wk_fn[PATH_MAX];
char wk_basefn[NAME_MAX + 1];
struct filehandle *wk_fh;
char *wk_buf;
char wk_host[PFL_HOSTNAME_MAX];
int wk_type;
int wk_rflags;
size_t wk_len;
struct stat wk_stb;
uint64_t wk_xid;
uint64_t wk_fid;
uint64_t wk_nchunks;
off_t wk_off;
};
struct ino_entry {
uint64_t i_fid;
struct psc_hashentry i_hentry;
};
enum {
THRT_DISP,
THRT_DONE,
THRT_MAIN,
THRT_RCV,
THRT_OPSTIMER,
THRT_WKR
};
const char *progname;
struct psc_poolmaster buf_poolmaster;
struct psc_poolmgr *buf_pool;
struct psc_poolmaster filehandles_poolmaster;
struct psc_poolmgr *filehandles_pool;
struct psc_hashtbl filehandles_hashtbl;
struct psc_listcache workq;
struct psc_listcache psync_doneq;
struct psc_poolmaster work_poolmaster;
struct psc_poolmgr *work_pool;
struct psc_hashtbl ino_hashtbl;
struct pfl_opstat *iostats;
struct psc_dynarray streams = DYNARRAY_INIT;
int psync_is_master; /* otherwise, is RPC puppet */
mode_t psync_umask;
struct psc_dynarray wkrthrs = DYNARRAY_INIT;
struct psc_dynarray rcvthrs = DYNARRAY_INIT;
psc_spinlock_t wkrthrs_lock = SPINLOCK_INIT;
psc_spinlock_t rcvthrs_lock = SPINLOCK_INIT;
psc_atomic64_t nbytes_total = PSC_ATOMIC64_INIT(0);
psc_atomic64_t nbytes_xfer = PSC_ATOMIC64_INIT(0);
psc_atomic64_t psync_offset_index = PSC_ATOMIC64_INIT(0);
psc_atomic64_t psync_fid = PSC_ATOMIC64_INIT(0); /* file ID (fake inumber) */
psc_atomic64_t psync_nfiles_xfer = PSC_ATOMIC64_INIT(0);
struct psc_compl psync_ready = PSC_COMPL_INIT("ready");
unsigned char psync_authbuf[AUTH_LEN];
struct filehandle *
filehandle_search(uint64_t fid)
{
return (psc_hashtbl_search(&filehandles_hashtbl, &fid));
}
int
filehandle_dropref(struct filehandle *fh)
{
int rc = 0;
spinlock(&fh->lock);
if (--fh->refcnt == 0) {
if (fh->len)
munmap(fh->base, fh->len);
psynclog_diag("close fd=%d", fh->fd);
close(fh->fd);
psc_hashent_remove(&filehandles_hashtbl, fh);
pfl_assert(pfl_heap_nitems(&fh->done_heap) == 0);
psc_pool_return(filehandles_pool, fh);
rc = 1;
} else
freelock(&fh->lock);
return (rc);
}
int
wk_heapcmp(const void *a, const void *b)
{
const struct work *x = a, *y = b;
return (CMP(x->wk_off, y->wk_off));
}
struct filehandle *
filehandle_new(uint64_t fid, size_t len)
{
struct filehandle *fh;
fh = psc_pool_get(filehandles_pool);
if (fh == NULL)
return (NULL);
memset(fh, 0, sizeof(*fh));
INIT_SPINLOCK(&fh->lock);
INIT_LISTENTRY(&fh->lentry);
pfl_heap_init(&fh->done_heap, struct work, wk_hpentry,
wk_heapcmp);
fh->refcnt++;
fh->fid = fid;
fh->len = len;
psc_hashent_init(&filehandles_hashtbl, fh);
psc_hashtbl_add_item(&filehandles_hashtbl, fh);
return (fh);
}
int
count_pages(unsigned char *buf, size_t len)
{
unsigned char *p;
int np = 0;
for (p = buf; p < buf + len; p++)
if (*p & 1)
np++;
return (np);
}
void
donethr_main(struct psc_thread *thr)
{
struct filehandle *fh;
struct work *wk;
void *offp;
int done;
while (pscthr_run(thr)) {
wk = lc_getwait(&psync_doneq);
if (wk == NULL)
break;
fh = wk->wk_fh;
pfl_heap_add(&fh->done_heap, wk);
do {
wk = pfl_heap_peek(&fh->done_heap);
if (wk == NULL ||
wk->wk_off != fh->done_off)
break;
pfl_heap_remove(&fh->done_heap, wk);
offp = fh->base + wk->wk_off;
posix_madvise(offp, wk->wk_len,
POSIX_MADV_DONTNEED);
fh->done_off = wk->wk_off + wk->wk_len;
done = filehandle_dropref(fh);
psc_pool_return(work_pool, wk);
} while (!done);
}
}
void
wkrthr_main(struct psc_thread *thr)
{
unsigned char *vbuf = NULL;
struct wkrthr *wkrthr = thr->pscthr_private;
struct stream *st = wkrthr->st;
struct work *wk;
FILE *logfp;
logfp = opts.offset_log_fp;
if (logfp) {
long pgsz, n;
pgsz = sysconf(_SC_PAGESIZE);
n = howmany(PSYNC_BLKSZ, pgsz);
vbuf = PSCALLOC(n);
}
while (pscthr_run(thr)) {
wk = lc_getwait(&workq);
if (wk == NULL)
break;
switch (wk->wk_type) {
case OPC_GETFILE_REQ:
rpc_send_getfile(st, wk->wk_xid, wk->wk_fn,
wk->wk_basefn);
break;
case OPC_PUTDATA:
#if 0
if (opts.partial) {
psc_compl_wait(&wk->wk_fh->cmpl);
if (checksum) {
wk = work_getitem(OPC_GETCKSUM_REQ);
wk->wk_off = off;
wk->wk_len = ;
lc_add(&workq, wk);
return;
}
wk = work_getitem(OPC_GETSTAT_REQ);
wk->wk_off = off;
wk->wk_len = ;
lc_add(&workq, wk);
return;
}
#endif
if (opts.sparse == 0 ||
!pfl_memchk(wk->wk_fh->base + wk->wk_off, 0,
wk->wk_len)) {
void *offp;
offp = wk->wk_fh->base + wk->wk_off;
if (logfp) {
mincore(offp, wk->wk_len, vbuf);
flockfile(logfp);
fprintf(logfp, "%"PRId64"\t"
"%"PRId64"\t%d\n",
psc_atomic64_inc_getnew(
&psync_offset_index),
wk->wk_off,
count_pages(vbuf,
howmany(PSYNC_BLKSZ,
wk->wk_len)));
funlockfile(logfp);
}
posix_madvise(offp, wk->wk_len * 2000,
POSIX_MADV_WILLNEED);
rpc_send_putdata(st, wk->wk_fid,
wk->wk_off, offp, wk->wk_len,
wk->wk_rflags);
}
psc_atomic64_add(&nbytes_xfer, wk->wk_len);
lc_addtail_ifalive(&psync_doneq, wk);
wk = NULL;
break;
case OPC_PUTNAME_REQ:
rpc_send_putname_req(st, wk->wk_fid, wk->wk_fn,
&wk->wk_stb, wk->wk_buf, wk->wk_nchunks,
wk->wk_rflags);
PSCFREE(wk->wk_buf);
break;
}
if (wk)
psc_pool_return(work_pool, wk);
if (exit_from_signal)
break;
}
PSCFREE(vbuf);
rpc_send_done(st);
psynclog_diag("wkrthr done, close fd=%d", st->wfd);
close(st->wfd);
spinlock(&wkrthrs_lock);
psc_dynarray_removeitem(&wkrthrs, thr);
freelock(&wkrthrs_lock);
}
struct work *
work_getitem(int type)
{
struct work *wk;
wk = psc_pool_get(work_pool);
memset(wk, 0, sizeof(*wk));
INIT_LISTENTRY(&wk->wk_lentry);
wk->wk_type = type;
return (wk);
}
int
seen_fid(ino_t fid)
{
struct psc_hashbkt *b;
struct ino_entry *i;
uint64_t kfid = fid;
int seen = 1;
b = psc_hashbkt_get(&ino_hashtbl, &kfid);
i = psc_hashbkt_search(&ino_hashtbl, b, &kfid);
if (i == NULL) {
i = PSCALLOC(sizeof(*i));
i->i_fid = kfid;
psc_hashent_init(&ino_hashtbl, i);
psc_hashbkt_add_item(&ino_hashtbl, b, i);
seen = 0;
}
psc_hashbkt_put(&ino_hashtbl, b);
return (seen);
}
/*
* @stb: stat(2) buffer only used during PUTs.
*/
void
enqueue_put(const char *srcfn, const char *dstfn,
const struct stat *stb, int rflags)
{
struct filehandle *fh;
struct work *wk;
off_t off = 0;
uint64_t fid;
size_t blksz;
blksz = opts.block_size ? (blksize_t)opts.block_size :
stb->st_blksize;
blksz = PSYNC_BLKSZ;
if (S_ISLNK(stb->st_mode)) {
if (!opts.links)
return;
} else if (S_ISCHR(stb->st_mode) || S_ISBLK(stb->st_mode)) {
if (!opts.devices)
return;
} else if (S_ISSOCK(stb->st_mode) || S_ISFIFO(stb->st_mode)) {
if (!opts.specials)
return;
}
if (opts.links)
fid = stb->st_ino;
else
fid = psc_atomic64_inc_getnew(&psync_fid);
/* sending; push name first */
wk = work_getitem(OPC_PUTNAME_REQ);
wk->wk_fid = fid;
memcpy(&wk->wk_stb, stb, sizeof(wk->wk_stb));
strlcpy(wk->wk_fn, dstfn, sizeof(wk->wk_fn));
wk->wk_rflags = rflags;
if (S_ISLNK(stb->st_mode)) {
int rc;
wk->wk_buf = PSCALLOC(PATH_MAX);
rc = readlink(srcfn, wk->wk_buf, PATH_MAX - 1);
if (rc == -1) {
psynclog_error("readlink %s", wk->wk_fn);
wk->wk_buf[0] = '\0';
} else
wk->wk_buf[rc] = '\0';
}
psynclog_diag("enqueue PUTNAME_REQ localfn=%s dstfn=%s flags=%d",
srcfn, wk->wk_fn, rflags);
psc_atomic64_inc(&psync_nfiles_xfer);
if (!S_ISREG(stb->st_mode) ||
(opts.links && seen_fid(fid))) {
lc_add(&workq, wk);
pscthr_yield();
return;
}
fh = filehandle_new(fid, stb->st_size);
/*
* If exiting due to reception of SIGHUP, the pool will be dead.
*/
if (fh == NULL)
return;
if (opts.partial)
psc_compl_init(&fh->cmpl);
wk->wk_nchunks = howmany(stb->st_size, blksz);
lc_add(&workq, wk);
fh->fd = open(srcfn, O_RDONLY);
if (fh->fd == -1)
err(1, "%s", srcfn);
if (stb->st_size) {
fh->base = mmap(NULL, stb->st_size, PROT_READ,
MAP_FILE | MAP_PRIVATE, fh->fd, 0);
if (fh->base == MAP_FAILED)
err(1, "mmap %s", srcfn);
posix_madvise(fh->base, stb->st_size,
POSIX_MADV_SEQUENTIAL);
}
psc_atomic64_add(&nbytes_total, stb->st_size);
/*
* Now push data chunks from the file onto a work queue consumed
* by worker threads.
*/
for (; off < stb->st_size; off += blksz) {
wk = work_getitem(OPC_PUTDATA);
wk->wk_fh = fh;
wk->wk_fid = fid;
wk->wk_stb.st_size = stb->st_size;
/* Mark EOF. */
if (off + (off_t)blksz >= stb->st_size)
wk->wk_rflags |= RPC_PUTDATA_F_LAST;
spinlock(&fh->lock);
fh->refcnt++;
freelock(&fh->lock);
wk->wk_off = off;
if (off + (off_t)blksz > stb->st_size)
wk->wk_len = stb->st_size % blksz;
else
wk->wk_len = blksz;
lc_add(&workq, wk);
pscthr_yield();
}
filehandle_dropref(fh);
}
int
push_putfile_walkcb(FTSENT *f, void *arg)
{
struct walkarg *wa = arg;
char dstfn[PATH_MAX];
const char *t;
int rc = 0;
if (exit_from_signal)
return (-1);
#if 0
struct filterpat *fp;
ok = 1;
DYNARRAY_FOREACH(fp, j, &opts.filter) {
if ()
ok = ;
}
if (!ok) {
fts_prune;
return;
}
#endif
t = f->fts_path + wa->skip;
while (*t == '/')
t++;
rc = snprintf(dstfn, sizeof(dstfn), "%s%s%s", wa->prefix, t[0] ?
"/" : "", t);
if (rc == -1)
psync_fatal("snprintf");
/// if (f->fts_level == 0)
// strlcat(dstfn, pfl_basename(fn), sizeof(dstfn));
if (f->fts_level > 0)
wa->rflags &= ~RPC_PUTNAME_F_TRYDIR;
enqueue_put(f->fts_path, dstfn, f->fts_statp, wa->rflags);
return (0);
}
/*
* put:
* psync file remote:dir/file
* psync file remote:dir/
* psync dir remote:dir/file
* psync dir remote:dir/
* get:
* psync remote:file dir/file
* psync remote:file dir/
* psync remote:dir dir/file
* psync remote:dir dir/
*/
int
walkfiles(int mode, const char *srcfn, int travflags, int rflags,
const char *dstfn)
{
char buf[PATH_MAX];
const char *finalfn;
struct stat tstb;
struct work *wk;
int rc;
if (mode == MODE_PUT) {
struct walkarg wa;
char *p;
p = strrchr(srcfn, '/');
if (p)
wa.skip = p - srcfn;
else
wa.skip = 0;
wa.rflags = rflags;
wa.prefix = dstfn;
return (pfl_filewalk(srcfn, travflags, NULL,
push_putfile_walkcb, &wa));
}
/* otherwise, the operation is a FETCH */
/*
* If destination is local and a directory, append
* remote source filename.
*
* psync remote:file file
* psync remote:file dir
* psync remote:dir file
* psync remote:dir dir
*/
finalfn = dstfn;
if (stat(dstfn, &tstb) == 0 && S_ISDIR(tstb.st_mode)) {
rc = snprintf(buf, sizeof(buf), "%s/%s", finalfn,
pfl_basename(srcfn));
if (rc == -1)
psync_fatal("snprintf");
finalfn = buf;
}
wk = work_getitem(OPC_GETFILE_REQ);
wk->wk_xid = psc_atomic64_inc_getnew(&psync_xid);
strlcpy(wk->wk_fn, srcfn, sizeof(wk->wk_fn));
strlcpy(wk->wk_basefn, finalfn, sizeof(wk->wk_basefn));
// if (!opts.partial)
// truncate(finalfn, 0);
lc_add(&workq, wk);
return (0);
}
int
filesfrom(int mode, const char *fromfn, int travflags,
const char *dstfn)
{
char fn[PATH_MAX], *p = fn;
int rc = 0, rv, c, lineno = 1;
FILE *fp;
fp = fopen(fromfn, "r");
if (fp == NULL)
psync_fatal("open %s", fromfn);
for (;;) {
c = fgetc(fp);
if (c == EOF)
break;
if (c == '\n' || c == '\r') {
lineno++;
*p = '\0';
if (p != fn) {
rv = walkfiles(mode, fn, travflags, 0,
dstfn);
if (rv)
rc = rv;
}
p = fn;
} else {
if (p == fn + sizeof(fn) - 1) {
errno = ENAMETOOLONG;
psynclog_warn("%s:%d", fromfn, lineno);
} else
*p++ = c;
}
}
fclose(fp);
if (p != fn) {
*p = '\0';
rv = walkfiles(mode, fn, travflags, 0, dstfn);
if (rv)
rc = rv;
}
return (rc);
}
union ctlmsg {
struct cmsghdr hdr;
unsigned char buf[CMSG_SPACE(sizeof(int))];
};
void
send_fd(int s, int fd)
{
struct cmsghdr *c;
struct iovec iov;
struct msghdr m;
union ctlmsg cm;
ssize_t nb;
int *pfd;
char ch;
memset(&m, 0, sizeof(m));
iov.iov_base = &ch;
iov.iov_len = 1;
m.msg_iov = &iov;
m.msg_iovlen = 1;
m.msg_control = cm.buf;
m.msg_controllen = sizeof(cm.buf);
c = CMSG_FIRSTHDR(&m);
c->cmsg_len = CMSG_LEN(sizeof(int));
c->cmsg_level = SOL_SOCKET;
c->cmsg_type = SCM_RIGHTS;
pfd = (void *)CMSG_DATA(c);
*pfd = fd;
nb = sendmsg(s, &m, MSG_WAITALL);
if (nb == -1)
psync_fatal("sendmsg");
}
int
recv_fd(int s)
{
struct cmsghdr *c;
struct iovec iov;
struct msghdr m;
union ctlmsg cm;
ssize_t rc;
char ch;
memset(&m, 0, sizeof(m));
iov.iov_base = &ch;
iov.iov_len = 1;
m.msg_iov = &iov;
m.msg_iovlen = 1;
m.msg_control = cm.buf;
m.msg_controllen = sizeof(cm.buf);
for (;;) {
rc = recvmsg(s, &m, MSG_WAITALL);
if (rc == -1) {
if (errno == EINTR)
continue;
psync_fatal("recvmsg");
}
break;
}
if (rc == 0)
psync_fatalx("recvmsg: unexpected EOF");
if (m.msg_flags & MSG_TRUNC ||
m.msg_flags & MSG_CTRUNC)
psync_fatalx("recvmsg: received truncated message");
for (c = CMSG_FIRSTHDR(&m); c; c = CMSG_NXTHDR(&m, c))
if (c->cmsg_len == CMSG_LEN(sizeof(int)) &&
c->cmsg_level == SOL_SOCKET &&
c->cmsg_type == SCM_RIGHTS) {
int *pfd;
pfd = (void *)CMSG_DATA(c);
return (*pfd);
}
psync_fatalx("no fd found in ctlmsg");
return (-1); /* gcc */
}
int
recv_auth(int fd, unsigned char *p)
{
return (atomicio_read(fd, p, AUTH_LEN) == AUTH_LEN);
}
void
send_auth(int fd, unsigned char *buf)
{
if (atomicio_write(fd, buf, AUTH_LEN) != AUTH_LEN)
psc_fatalx("short I/O");
}
int
puppet_limb_mode(void)
{
struct sockaddr_un sun;
int s, rc;
char ch;
s = socket(AF_LOCAL, SOCK_STREAM, 0);
if (s == -1)
psync_fatal("socket");
memset(&sun, 0, sizeof(sun));
sun.sun_family = AF_LOCAL;
SOCKADDR_SETLEN(&sun);
rc = snprintf(sun.sun_path, sizeof(sun.sun_path),
"%s/.psync.%d.sock", _PATH_TMP, opts.puppet);
if (rc == -1)
psync_fatal("snprintf");
if (rc < 1 || (size_t)rc > sizeof(sun.sun_path))
psync_fatalx("snprintf: invalid path");
for (;;) {
if (connect(s, (struct sockaddr *)&sun,
sizeof(sun)) == -1) {
if (errno == ENOENT) {
usleep(1000);
continue;
}
psync_fatal("connect: %s", sun.sun_path);
}
break;
}
if (!recv_auth(STDIN_FILENO, psync_authbuf))
psync_fatal("no auth received");
send_auth(s, psync_authbuf);
send_fd(s, 0);
send_fd(s, 1);
do
rc = read(s, &ch, 1);
while (rc == -1 && errno == EINTR);
return (0);
}
void
spawn_worker_threads(struct stream *st)
{
struct psc_thread *thr;
struct wkrthr *wkrthr;
struct rcvthr *rcvthr;
int n;
n = psc_dynarray_len(&streams);
thr = pscthr_init(THRT_WKR, wkrthr_main, sizeof(*wkrthr),
"wkrthr%d", n);
wkrthr = thr->pscthr_private;
wkrthr->st = st;
pscthr_setready(thr);
spinlock(&wkrthrs_lock);
push(&wkrthrs, thr);
freelock(&wkrthrs_lock);
thr = pscthr_init(THRT_RCV, rcvthr_main, sizeof(*rcvthr),
"rcvthr%d", n);
rcvthr = thr->pscthr_private;
rcvthr->st = st;
pscthr_setready(thr);
spinlock(&rcvthrs_lock);
push(&rcvthrs, thr);
freelock(&rcvthrs_lock);
}
int
puppet_head_mode(void)
{
unsigned char tbuf[AUTH_LEN];
int i, rc, clifd, s, rfd, wfd;
struct psc_dynarray puppet_strings = DYNARRAY_INIT;
struct sockaddr_un sun;
struct stream *st;
mode_t old_umask;
void *p;
s = socket(AF_LOCAL, SOCK_STREAM, 0);
if (s == -1)
psync_fatal("socket");
memset(&sun, 0, sizeof(sun));
sun.sun_family = AF_LOCAL;
SOCKADDR_SETLEN(&sun);
rc = snprintf(sun.sun_path, sizeof(sun.sun_path),
"%s/.psync.%d.sock", _PATH_TMP, opts.puppet);
if (rc == -1)
psync_fatal("snprintf");
if (rc < 1 || (size_t)rc > sizeof(sun.sun_path))
psync_fatalx("snprintf: invalid path");
if (unlink(sun.sun_path) == -1 && errno != ENOENT)
psynclog_error("unlink %s", sun.sun_path);
spinlock(&psc_umask_lock);
old_umask = umask(_S_IXUGO | S_IRWXG | S_IRWXO);
if (bind(s, (struct sockaddr *)&sun, sizeof(sun)) == -1)
psync_fatal("bind %s", sun.sun_path);
umask(old_umask);
freelock(&psc_umask_lock);
if (chmod(sun.sun_path, S_IRUSR | S_IWUSR) == -1)
psync_fatal("chmod %s", sun.sun_path);
#define QLEN (opts.streams * 2)
if (listen(s, 128) == -1)
psync_fatal("listen");
psynclog_diag("listening on %s", sun.sun_path);
if (chdir(opts.dstdir) == -1) {
char *sep;
if (errno != EEXIST)
psync_fatal("%s", opts.dstdir);
sep = strchr(opts.dstdir, '/');
if (sep)
*sep = '\0';
if (chdir(opts.dstdir) == -1)
psync_fatal("%s", opts.dstdir);
}
/*
* Receive an 'authentication buffer' from our socket to the
* remote side. This is used to authenticate connections made
* to our UNIX domain socket from psync slaves.
*/
if (!recv_auth(STDIN_FILENO, psync_authbuf))
psync_fatal("no auth received");
st = stream_create(STDIN_FILENO, STDOUT_FILENO);
rpc_send_ready(st);
spawn_worker_threads(st);
psynclog_diag("waiting for %d puppet strings", opts.streams);
for (i = 1; i < opts.streams; i++) {
clifd = accept(s, NULL, NULL);
if (!recv_auth(clifd, tbuf) ||
memcmp(psync_authbuf, tbuf, AUTH_LEN)) {
close(clifd);
i--;
continue;
}
rfd = recv_fd(clifd);
wfd = recv_fd(clifd);
st = stream_create(rfd, wfd);
spawn_worker_threads(st);
push(&puppet_strings,
(void *)(unsigned long)clifd);
}
psynclog_diag("attached all puppet strings");
close(s);
while (psc_dynarray_len(&rcvthrs))
usleep(10000);
psynclog_diag("rcvthrs done");
lc_kill(&workq);
lc_kill(&psync_doneq);
while (psc_dynarray_len(&wkrthrs))
usleep(10000);
psynclog_diag("wkrthrs done");
DYNARRAY_FOREACH(p, i, &puppet_strings)
close((int)(unsigned long)p);
fcache_destroy();
return (0);
}
void
dispthr_main(struct psc_thread *thr)
{
char totalbuf[PSCFMT_HUMAN_BUFSIZ], xferbuf[PSCFMT_HUMAN_BUFSIZ];
char *ce_seq = NULL, ratebuf[PSCFMT_HUMAN_BUFSIZ];
char ratbuf[PSCFMT_RATIO_BUFSIZ];
struct pfl_waitq wq = PFL_WAITQ_INIT("display");
struct timespec ts, start, d;
uint64_t xnb, tnb;
time_t sec = 0;
if (tgetent(NULL, NULL) == 1)
ce_seq = tgetstr("ce", &ce_seq);
if (ce_seq == NULL)
ce_seq = "";
PFL_GETTIMESPEC(&start);
ts = start;
ts.tv_nsec = 0;
while (pscthr_run(thr)) {
/* dispthr and opstimerthr */
if (psc_dynarray_len(&rcvthrs) == 0 &&
psc_dynarray_len(&wkrthrs) == 0)
break;
ts.tv_sec++;
pfl_waitq_waitabs(&wq, NULL, &ts);
if (!opts.progress)
continue;
#if 0
POOL_LOCK(filehandles_pool);
nfd = filehandles_pool->ppm_total -
filehandles_pool->ppm_nfree;
POOL_ULOCK(filehandles_pool);
#endif
timespecsub(&ts, &start, &d);
sec = d.tv_sec;
tnb = psc_atomic64_read(&nbytes_total);
xnb = psc_atomic64_read(&nbytes_xfer);
pfl_fmt_human(ratebuf, iostats->opst_intv);
pfl_fmt_human(totalbuf, tnb);
pfl_fmt_human(xferbuf, xnb);
flockfile(stdout);
printf("\r%2d thr "
"elapsed %3ld:%02ld:%02ld "
"%s xfer "
"%s ",
opts.streams,
sec / 60 / 60, (sec / 60) % 60, sec % 60,
xferbuf, totalbuf);
if (workq.plc_flags & PLCF_DYING) {
pfl_fmt_ratio(ratbuf, xnb, tnb);
printf("total %6s ", ratbuf);
} else {
printf("calculating... ");
}
printf("%7s/s%s ", ratebuf, ce_seq);
fflush(stdout);