forked from RsyncProject/rsync
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathrsync.h
1385 lines (1162 loc) · 38.1 KB
/
rsync.h
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
/*
* Copyright (C) 1996, 2000 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
* Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
* Copyright (C) 2003-2020 Wayne Davison
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* 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, visit the http://fsf.org website.
*/
#define False 0
#define True 1
#define BLOCK_SIZE 700
#define RSYNC_RSH_ENV "RSYNC_RSH"
#define RSYNC_RSH_IO_ENV "RSYNC_RSH_IO"
#define RSYNC_NAME "rsync"
/* RSYNCD_SYSCONF is now set in config.h */
#define RSYNCD_USERCONF "rsyncd.conf"
#define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
#define URL_PREFIX "rsync://"
#define SYMLINK_PREFIX "/rsyncd-munged/" /* This MUST have a trailing slash! */
#define SYMLINK_PREFIX_LEN ((int)sizeof SYMLINK_PREFIX - 1)
#define BACKUP_SUFFIX "~"
/* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
incompatible with older versions :-( */
#define CHAR_OFFSET 0
/* These flags are only used during the flist transfer. */
#define XMIT_TOP_DIR (1<<0)
#define XMIT_SAME_MODE (1<<1)
#define XMIT_SAME_RDEV_pre28 (1<<2) /* protocols 20 - 27 */
#define XMIT_EXTENDED_FLAGS (1<<2) /* protocols 28 - now */
#define XMIT_SAME_UID (1<<3)
#define XMIT_SAME_GID (1<<4)
#define XMIT_SAME_NAME (1<<5)
#define XMIT_LONG_NAME (1<<6)
#define XMIT_SAME_TIME (1<<7)
#define XMIT_SAME_RDEV_MAJOR (1<<8) /* protocols 28 - now (devices only) */
#define XMIT_NO_CONTENT_DIR (1<<8) /* protocols 30 - now (dirs only) */
#define XMIT_HLINKED (1<<9) /* protocols 28 - now (non-dirs) */
#define XMIT_SAME_DEV_pre30 (1<<10) /* protocols 28 - 29 */
#define XMIT_USER_NAME_FOLLOWS (1<<10) /* protocols 30 - now */
#define XMIT_RDEV_MINOR_8_pre30 (1<<11) /* protocols 28 - 29 */
#define XMIT_GROUP_NAME_FOLLOWS (1<<11) /* protocols 30 - now */
#define XMIT_HLINK_FIRST (1<<12) /* protocols 30 - now (HLINKED files only) */
#define XMIT_IO_ERROR_ENDLIST (1<<12) /* protocols 31*- now (w/XMIT_EXTENDED_FLAGS) (also protocol 30 w/'f' compat flag) */
#define XMIT_MOD_NSEC (1<<13) /* protocols 31 - now */
#define XMIT_SAME_ATIME (1<<14) /* any protocol - restricted by command-line option */
#define XMIT_UNUSED_15 (1<<15) /* unused flag bit */
/* The following XMIT flags require an rsync that uses a varint for the flag values */
#define XMIT_RESERVED_16 (1<<16) /* reserved for future fileflags use */
#define XMIT_RESERVED_17 (1<<17) /* reserved for future crtimes use */
/* These flags are used in the live flist data. */
#define FLAG_TOP_DIR (1<<0) /* sender/receiver/generator */
#define FLAG_OWNED_BY_US (1<<0) /* generator: set by make_file() for aux flists only */
#define FLAG_FILE_SENT (1<<1) /* sender/receiver/generator */
#define FLAG_DIR_CREATED (1<<1) /* generator */
#define FLAG_CONTENT_DIR (1<<2) /* sender/receiver/generator */
#define FLAG_MOUNT_DIR (1<<3) /* sender/generator (dirs only) */
#define FLAG_SKIP_HLINK (1<<3) /* receiver/generator (w/FLAG_HLINKED) */
#define FLAG_DUPLICATE (1<<4) /* sender */
#define FLAG_MISSING_DIR (1<<4) /* generator */
#define FLAG_HLINKED (1<<5) /* receiver/generator (checked on all types) */
#define FLAG_HLINK_FIRST (1<<6) /* receiver/generator (w/FLAG_HLINKED) */
#define FLAG_IMPLIED_DIR (1<<6) /* sender/receiver/generator (dirs only) */
#define FLAG_HLINK_LAST (1<<7) /* receiver/generator */
#define FLAG_HLINK_DONE (1<<8) /* receiver/generator (checked on all types) */
#define FLAG_LENGTH64 (1<<9) /* sender/receiver/generator */
#define FLAG_SKIP_GROUP (1<<10) /* receiver/generator */
#define FLAG_TIME_FAILED (1<<11)/* generator */
#define FLAG_MOD_NSEC (1<<12) /* sender/receiver/generator */
/* These flags are passed to functions but not stored. */
#define FLAG_DIVERT_DIRS (1<<16) /* sender, but must be unique */
#define FLAG_PERHAPS_DIR (1<<17) /* generator */
/* These flags are for get_dirlist(). */
#define GDL_IGNORE_FILTER_RULES (1<<0)
#define GDL_PERHAPS_DIR (1<<1)
/* Some helper macros for matching bits. */
#define BITS_SET(val,bits) (((val) & (bits)) == (bits))
#define BITS_SETnUNSET(val,onbits,offbits) (((val) & ((onbits)|(offbits))) == (onbits))
#define BITS_EQUAL(b1,b2,mask) (((unsigned)(b1) & (unsigned)(mask)) \
== ((unsigned)(b2) & (unsigned)(mask)))
/* update this if you make incompatible changes */
#define PROTOCOL_VERSION 31
/* This is used when working on a new protocol version in CVS, and should
* be a new non-zero value for each CVS change that affects the protocol.
* It must ALWAYS be 0 when the protocol goes final (and NEVER before)! */
#define SUBPROTOCOL_VERSION 0
/* We refuse to interoperate with versions that are not in this range.
* Note that we assume we'll work with later versions: the onus is on
* people writing them to make sure that they don't send us anything
* we won't understand.
*
* Interoperation with old but supported protocol versions
* should cause a warning to be printed. At a future date
* the old protocol will become the minimum and
* compatibility code removed.
*
* There are two possible explanations for the limit at
* MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
* do not interoperate with us, and (more likely) so that we can
* detect an attempt to connect rsync to a non-rsync server, which is
* unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
* MAX_PROTOCOL_VERSION. */
#define MIN_PROTOCOL_VERSION 20
#define OLD_PROTOCOL_VERSION 25
#define MAX_PROTOCOL_VERSION 40
#define MIN_FILECNT_LOOKAHEAD 1000
#define MAX_FILECNT_LOOKAHEAD 10000
#define RSYNC_PORT 873
#define SPARSE_WRITE_SIZE (1024)
#define WRITE_SIZE (32*1024)
#define CHUNK_SIZE (32*1024)
#define MAX_MAP_SIZE (256*1024)
#define IO_BUFFER_SIZE (32*1024)
#define MAX_BLOCK_SIZE ((int32)1 << 17)
/* For compatibility with older rsyncs */
#define OLD_MAX_BLOCK_SIZE ((int32)1 << 29)
#define ROUND_UP_1024(siz) ((siz) & (1024-1) ? ((siz) | (1024-1)) + 1 : (siz))
#define IOERR_GENERAL (1<<0) /* For backward compatibility, this must == 1 */
#define IOERR_VANISHED (1<<1)
#define IOERR_DEL_LIMIT (1<<2)
#define MAX_ARGS 1000
#define MAX_BASIS_DIRS 20
#define MAX_SERVER_ARGS (MAX_BASIS_DIRS*2 + 100)
#define COMPARE_DEST 1
#define COPY_DEST 2
#define LINK_DEST 3
#define MPLEX_BASE 7
#define NO_FILTERS 0
#define SERVER_FILTERS 1
#define ALL_FILTERS 2
#define XFLG_FATAL_ERRORS (1<<0)
#define XFLG_OLD_PREFIXES (1<<1)
#define XFLG_ANCHORED2ABS (1<<2) /* leading slash indicates absolute */
#define XFLG_ABS_IF_SLASH (1<<3) /* leading or interior slash is absolute */
#define XFLG_DIR2WILD3 (1<<4) /* dir/ match gets trailing *** added */
#define ATTRS_REPORT (1<<0)
#define ATTRS_SKIP_MTIME (1<<1)
#define ATTRS_ACCURATE_TIME (1<<2)
#define ATTRS_SKIP_ATIME (1<<3)
#define MSG_FLUSH 2
#define FULL_FLUSH 1
#define NORMAL_FLUSH 0
#define PDIR_CREATE 1
#define PDIR_DELETE 0
/* Note: 0x00 - 0x7F are used for basis_dir[] indexes! */
#define FNAMECMP_BASIS_DIR_LOW 0x00 /* Must remain 0! */
#define FNAMECMP_BASIS_DIR_HIGH 0x7F
#define FNAMECMP_FNAME 0x80
#define FNAMECMP_PARTIAL_DIR 0x81
#define FNAMECMP_BACKUP 0x82
#define FNAMECMP_FUZZY 0x83
/* For use by the itemize_changes code */
#define ITEM_REPORT_ATIME (1<<0)
#define ITEM_REPORT_CHANGE (1<<1)
#define ITEM_REPORT_SIZE (1<<2) /* regular files only */
#define ITEM_REPORT_TIMEFAIL (1<<2) /* symlinks only */
#define ITEM_REPORT_TIME (1<<3)
#define ITEM_REPORT_PERMS (1<<4)
#define ITEM_REPORT_OWNER (1<<5)
#define ITEM_REPORT_GROUP (1<<6)
#define ITEM_REPORT_ACL (1<<7)
#define ITEM_REPORT_XATTR (1<<8)
#define ITEM_BASIS_TYPE_FOLLOWS (1<<11)
#define ITEM_XNAME_FOLLOWS (1<<12)
#define ITEM_IS_NEW (1<<13)
#define ITEM_LOCAL_CHANGE (1<<14)
#define ITEM_TRANSFER (1<<15)
/* These are outside the range of the transmitted flags. */
#define ITEM_MISSING_DATA (1<<16) /* used by log_formatted() */
#define ITEM_DELETED (1<<17) /* used by log_formatted() */
#define ITEM_MATCHED (1<<18) /* used by itemize() */
#define SIGNIFICANT_ITEM_FLAGS (~(\
ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE))
#define CFN_KEEP_DOT_DIRS (1<<0)
#define CFN_KEEP_TRAILING_SLASH (1<<1)
#define CFN_DROP_TRAILING_DOT_DIR (1<<2)
#define CFN_COLLAPSE_DOT_DOT_DIRS (1<<3)
#define CFN_REFUSE_DOT_DOT_DIRS (1<<4)
#define SP_DEFAULT 0
#define SP_KEEP_DOT_DIRS (1<<0)
#define CD_NORMAL 0
#define CD_SKIP_CHDIR 1
/* Log-message categories. FLOG only goes to the log file, not the client;
* FCLIENT is the opposite. */
enum logcode {
FNONE=0, /* never sent */
FERROR_XFER=1, FINFO=2, /* sent over socket for any protocol */
FERROR=3, FWARNING=4, /* sent over socket for protocols >= 30 */
FERROR_SOCKET=5, FLOG=6, /* only sent via receiver -> generator pipe */
FERROR_UTF8=8, /* only sent via receiver -> generator pipe */
FCLIENT=7 /* never transmitted (e.g. server converts to FINFO) */
};
/* Messages types that are sent over the message channel. The logcode
* values must all be present here with identical numbers. */
enum msgcode {
MSG_DATA=0, /* raw data on the multiplexed stream */
MSG_ERROR_XFER=FERROR_XFER, MSG_INFO=FINFO, /* remote logging */
MSG_ERROR=FERROR, MSG_WARNING=FWARNING, /* protocol-30 remote logging */
MSG_ERROR_SOCKET=FERROR_SOCKET, /* sibling logging */
MSG_ERROR_UTF8=FERROR_UTF8, /* sibling logging */
MSG_LOG=FLOG, MSG_CLIENT=FCLIENT, /* sibling logging */
MSG_REDO=9, /* reprocess indicated flist index */
MSG_STATS=10, /* message has stats data for generator */
MSG_IO_ERROR=22,/* the sending side had an I/O error */
MSG_IO_TIMEOUT=33,/* tell client about a daemon's timeout value */
MSG_NOOP=42, /* a do-nothing message (legacy protocol-30 only) */
MSG_ERROR_EXIT=86, /* synchronize an error exit (siblings and protocol >= 31) */
MSG_SUCCESS=100,/* successfully updated indicated flist index */
MSG_DELETED=101,/* successfully deleted a file on receiving side */
MSG_NO_SEND=102,/* sender failed to open a file we wanted */
};
#define NDX_DONE -1
#define NDX_FLIST_EOF -2
#define NDX_DEL_STATS -3
#define NDX_FLIST_OFFSET -101
/* For calling delete_item() and delete_dir_contents(). */
#define DEL_NO_UID_WRITE (1<<0) /* file/dir has our uid w/o write perm */
#define DEL_RECURSE (1<<1) /* if dir, delete all contents */
#define DEL_DIR_IS_EMPTY (1<<2) /* internal delete_FUNCTIONS use only */
#define DEL_FOR_FILE (1<<3) /* making room for a replacement file */
#define DEL_FOR_DIR (1<<4) /* making room for a replacement dir */
#define DEL_FOR_SYMLINK (1<<5) /* making room for a replacement symlink */
#define DEL_FOR_DEVICE (1<<6) /* making room for a replacement device */
#define DEL_FOR_SPECIAL (1<<7) /* making room for a replacement special */
#define DEL_FOR_BACKUP (1<<8) /* the delete is for a backup operation */
#define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
enum delret {
DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
};
/* Defines for make_path() */
#define MKP_DROP_NAME (1<<0) /* drop trailing filename or trailing slash */
#define MKP_SKIP_SLASH (1<<1) /* skip one or more leading slashes */
/* Defines for maybe_send_keepalive() */
#define MSK_ALLOW_FLUSH (1<<0)
#define MSK_ACTIVE_RECEIVER (1<<1)
#include "errcode.h"
#include "config.h"
/* The default RSYNC_RSH is always set in config.h. */
#include <stdio.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# ifdef HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif
#ifdef HAVE_STRING_H
# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
# include <memory.h>
# endif
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H)
#include <malloc.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#else
#ifdef HAVE_SYS_FCNTL_H
#include <sys/fcntl.h>
#endif
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_FILIO_H
#include <sys/filio.h>
#endif
#include <signal.h>
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_CTYPE_H
#include <ctype.h>
#endif
#ifdef HAVE_GRP_H
#include <grp.h>
#endif
#include <errno.h>
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif
#if defined HAVE_UTIMENSAT || defined HAVE_LUTIMES || defined HAVE_SETATTRLIST
#define CAN_SET_SYMLINK_TIMES 1
#endif
#if defined HAVE_LCHOWN || defined CHOWN_MODIFIES_SYMLINK
#define CAN_CHOWN_SYMLINK 1
#endif
#if defined HAVE_LCHMOD || defined HAVE_SETATTRLIST
#define CAN_CHMOD_SYMLINK 1
#endif
#if defined HAVE_UTIMENSAT || defined HAVE_SETATTRLIST
#define CAN_SET_NSEC 1
#endif
#ifdef CAN_SET_NSEC
#ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
#define ST_MTIME_NSEC st_mtim.tv_nsec
#define ST_ATIME_NSEC st_atim.tv_nsec
#elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
#define ST_MTIME_NSEC st_mtimensec
#define ST_ATIME_NSEC st_atimensec
#elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
#define ST_MTIME_NSEC st_mtimespec.tv_nsec
#define ST_ATIME_NSEC st_atimespec.tv_nsec
#endif
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_MODE_H
/* apparently AIX needs this for S_ISLNK */
#ifndef S_ISLNK
#include <sys/mode.h>
#endif
#endif
/* these are needed for the uid/gid mapping code */
#include <pwd.h>
#include <grp.h>
#include <stdarg.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#include <syslog.h>
#include <sys/file.h>
#ifdef HAVE_DIRENT_H
# include <dirent.h>
#else
# define dirent direct
# ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# ifdef HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#ifdef MAJOR_IN_MKDEV
#include <sys/mkdev.h>
# if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
# define makedev mkdev
# endif
#elif defined MAJOR_IN_SYSMACROS
#include <sys/sysmacros.h>
#endif
#ifdef MAKEDEV_TAKES_3_ARGS
#define MAKEDEV(devmajor,devminor) makedev(0,devmajor,devminor)
#else
#define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor)
#endif
#ifdef HAVE_COMPAT_H
#include <compat.h>
#endif
#ifdef HAVE_LIMITS_H
# include <limits.h>
#endif
#if defined USE_ICONV_OPEN && defined HAVE_ICONV_H
#include <iconv.h>
#ifndef ICONV_CONST
#define ICONV_CONST
#endif
#else
#ifdef ICONV_CONST
#undef ICONV_CONST
#endif
#ifdef ICONV_OPTION
#undef ICONV_OPTION
#endif
#ifdef iconv_t
#undef iconv_t
#endif
#define iconv_t int
#endif
#include <assert.h>
#include "lib/pool_alloc.h"
#ifndef HAVE_ID_T
typedef unsigned int id_t;
#endif
#ifndef HAVE_PID_T
typedef int pid_t;
#endif
#ifndef HAVE_MODE_T
typedef unsigned int mode_t;
#endif
#ifndef HAVE_OFF_T
typedef long off_t;
#undef SIZEOF_OFF_T
#define SIZEOF_OFF_T SIZEOF_LONG
#endif
#ifndef HAVE_SIZE_T
typedef unsigned int size_t;
#endif
#define BOOL int
#ifndef uchar
#define uchar unsigned char
#endif
#ifdef SIGNED_CHAR_OK
#define schar signed char
#else
#define schar char
#endif
#ifndef int16
#if SIZEOF_INT16_T == 2
# define int16 int16_t
#else
# define int16 short
#endif
#endif
#ifndef uint16
#if SIZEOF_UINT16_T == 2
# define uint16 uint16_t
#else
# define uint16 unsigned int16
#endif
#endif
/* Find a variable that is either exactly 32-bits or longer.
* If some code depends on 32-bit truncation, it will need to
* take special action in a "#if SIZEOF_INT32 > 4" section. */
#ifndef int32
#if SIZEOF_INT32_T == 4
# define int32 int32_t
# define SIZEOF_INT32 4
#elif SIZEOF_INT == 4
# define int32 int
# define SIZEOF_INT32 4
#elif SIZEOF_LONG == 4
# define int32 long
# define SIZEOF_INT32 4
#elif SIZEOF_SHORT == 4
# define int32 short
# define SIZEOF_INT32 4
#elif SIZEOF_INT > 4
# define int32 int
# define SIZEOF_INT32 SIZEOF_INT
#elif SIZEOF_LONG > 4
# define int32 long
# define SIZEOF_INT32 SIZEOF_LONG
#else
# error Could not find a 32-bit integer variable
#endif
#else
# define SIZEOF_INT32 4
#endif
#ifndef uint32
#if SIZEOF_UINT32_T == 4
# define uint32 uint32_t
#else
# define uint32 unsigned int32
#endif
#endif
#if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64
#define OFF_T off_t
#define STRUCT_STAT struct stat
#define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF_T
#else
#define OFF_T off64_t
#define STRUCT_STAT struct stat64
#define USE_STAT64_FUNCS 1
#define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF64_T
#endif
/* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF
* that's the maximum size the file system can handle and there is no
* 64-bit type available. The rsync source must therefore take steps
* to ensure that any code that really requires a 64-bit integer has
* it (e.g. the checksum code uses two 32-bit integers for its 64-bit
* counter). */
#if SIZEOF_INT64_T == 8
# define int64 int64_t
# define SIZEOF_INT64 8
#elif SIZEOF_LONG == 8
# define int64 long
# define SIZEOF_INT64 8
#elif SIZEOF_INT == 8
# define int64 int
# define SIZEOF_INT64 8
#elif SIZEOF_LONG_LONG == 8
# define int64 long long
# define SIZEOF_INT64 8
#elif SIZEOF_OFF64_T == 8
# define int64 off64_t
# define SIZEOF_INT64 8
#elif SIZEOF_OFF_T == 8
# define int64 off_t
# define SIZEOF_INT64 8
#elif SIZEOF_INT > 8
# define int64 int
# define SIZEOF_INT64 SIZEOF_INT
#elif SIZEOF_LONG > 8
# define int64 long
# define SIZEOF_INT64 SIZEOF_LONG
#elif SIZEOF_LONG_LONG > 8
# define int64 long long
# define SIZEOF_INT64 SIZEOF_LONG_LONG
#else
/* As long as it gets... */
# define int64 off_t
# define SIZEOF_INT64 SIZEOF_OFF_T
#endif
#define HT_KEY32 0
#define HT_KEY64 1
struct hashtable {
void *nodes;
int32 size, entries;
uint32 node_size;
short key64;
};
struct ht_int32_node {
void *data;
int32 key;
};
struct ht_int64_node {
void *data;
int64 key;
};
#define HT_NODE(tbl, bkts, i) ((void*)((char*)(bkts) + (i)*(tbl)->node_size))
#define HT_KEY(node, k64) ((k64)? ((struct ht_int64_node*)(node))->key \
: (int64)((struct ht_int32_node*)(node))->key)
#ifndef MIN
#define MIN(a,b) ((a)<(b)?(a):(b))
#endif
#ifndef MAX
#define MAX(a,b) ((a)>(b)?(a):(b))
#endif
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 256
#endif
#define SUM_LENGTH 16
#define SHORT_SUM_LENGTH 2
#define BLOCKSUM_BIAS 10
#ifndef MAXPATHLEN
#define MAXPATHLEN 1024
#endif
/* We want a roomy line buffer that can hold more than MAXPATHLEN,
* and significantly more than an overly short MAXPATHLEN. */
#if MAXPATHLEN < 4096
#define BIGPATHBUFLEN (4096+1024)
#else
#define BIGPATHBUFLEN (MAXPATHLEN+1024)
#endif
#ifndef NAME_MAX
#define NAME_MAX 255
#endif
#ifndef INADDR_NONE
#define INADDR_NONE 0xffffffff
#endif
#ifndef IN_LOOPBACKNET
#define IN_LOOPBACKNET 127
#endif
#if HAVE_UNIXWARE_ACLS|HAVE_SOLARIS_ACLS|HAVE_HPUX_ACLS
#define ACLS_NEED_MASK 1
#endif
#if defined HAVE_FALLOCATE || HAVE_SYS_FALLOCATE
#ifdef HAVE_LINUX_FALLOC_H
#include <linux/falloc.h>
#endif
#ifdef FALLOC_FL_KEEP_SIZE
#define SUPPORT_PREALLOCATION 1
#elif defined HAVE_FTRUNCATE
#define SUPPORT_PREALLOCATION 1
#define PREALLOCATE_NEEDS_TRUNCATE 1
#endif
#else /* !fallocate */
#if defined HAVE_EFFICIENT_POSIX_FALLOCATE && defined HAVE_FTRUNCATE
#define SUPPORT_PREALLOCATION 1
#define PREALLOCATE_NEEDS_TRUNCATE 1
#endif
#endif
#if SIZEOF_CHARP == 4
# define PTRS_ARE_32 1
# define PTR_EXTRA_CNT 1
#elif SIZEOF_CHARP == 8
# define PTRS_ARE_64 1
# define PTR_EXTRA_CNT EXTRA64_CNT
#else
# error Character pointers are not 4 or 8 bytes.
#endif
union file_extras {
int32 num;
uint32 unum;
#ifdef PTRS_ARE_32
const char* ptr;
#endif
};
union file_extras64 {
int64 num;
#ifdef PTRS_ARE_64
const char* ptr;
#endif
};
struct file_struct {
const char *dirname; /* The dir info inside the transfer */
time_t modtime; /* When the item was last modified */
uint32 len32; /* Lowest 32 bits of the file's length */
uint16 mode; /* The item's type and permissions */
uint16 flags; /* The FLAG_* bits for this item */
const char basename[1]; /* The basename (AKA filename) follows */
};
extern int file_extra_cnt;
extern int inc_recurse;
extern int atimes_ndx;
extern int pathname_ndx;
extern int depth_ndx;
extern int uid_ndx;
extern int gid_ndx;
extern int acls_ndx;
extern int xattrs_ndx;
#define FILE_STRUCT_LEN (offsetof(struct file_struct, basename))
#define EXTRA_LEN (sizeof (union file_extras))
#define DEV_EXTRA_CNT 2
#define DIRNODE_EXTRA_CNT 3
#define EXTRA64_CNT ((sizeof (union file_extras64) + EXTRA_LEN - 1) / EXTRA_LEN)
#define SUM_EXTRA_CNT ((MAX_DIGEST_LEN + EXTRA_LEN - 1) / EXTRA_LEN)
#define REQ_EXTRA(f,ndx) ((union file_extras*)(f) - (ndx))
#define OPT_EXTRA(f,bump) ((union file_extras*)(f) - file_extra_cnt - 1 - (bump))
/* These are guaranteed to be allocated first in the array so that they
* are aligned for direct int64-pointer access. */
#define REQ_EXTRA64(f,ndx) ((union file_extras64*)REQ_EXTRA(f,ndx))
#define NSEC_BUMP(f) ((f)->flags & FLAG_MOD_NSEC ? 1 : 0)
#define LEN64_BUMP(f) ((f)->flags & FLAG_LENGTH64 ? 1 : 0)
#define START_BUMP(f) (NSEC_BUMP(f) + LEN64_BUMP(f))
#define HLINK_BUMP(f) ((f)->flags & (FLAG_HLINKED|FLAG_HLINK_DONE) ? inc_recurse+1 : 0)
#define ACL_BUMP(f) (acls_ndx ? 1 : 0)
/* The length applies to all items. */
#if SIZEOF_INT64 < 8
#define F_LENGTH(f) ((int64)(f)->len32)
#else
#define F_HIGH_LEN(f) (OPT_EXTRA(f, NSEC_BUMP(f))->unum)
#define F_LENGTH(f) ((int64)(f)->len32 + ((f)->flags & FLAG_LENGTH64 ? (int64)F_HIGH_LEN(f) << 32 : 0))
#endif
#define F_MOD_NSEC(f) OPT_EXTRA(f, 0)->unum
#define F_MOD_NSEC_or_0(f) ((f)->flags & FLAG_MOD_NSEC ? F_MOD_NSEC(f) : 0)
/* If there is a symlink string, it is always right after the basename */
#define F_SYMLINK(f) ((f)->basename + strlen((f)->basename) + 1)
/* The sending side always has this available: */
#ifdef PTRS_ARE_32
#define F_PATHNAME(f) REQ_EXTRA(f, pathname_ndx)->ptr
#else
#define F_PATHNAME(f) REQ_EXTRA64(f, pathname_ndx)->ptr
#endif
/* The receiving side always has this available: */
#define F_DEPTH(f) REQ_EXTRA(f, depth_ndx)->num
/* When the associated option is on, all entries will have these present: */
#define F_OWNER(f) REQ_EXTRA(f, uid_ndx)->unum
#define F_GROUP(f) REQ_EXTRA(f, gid_ndx)->unum
#define F_ACL(f) REQ_EXTRA(f, acls_ndx)->num
#define F_XATTR(f) REQ_EXTRA(f, xattrs_ndx)->num
#define F_NDX(f) REQ_EXTRA(f, unsort_ndx)->num
#define F_ATIME(f) REQ_EXTRA64(f, atimes_ndx)->num
/* These items are per-entry optional: */
#define F_HL_GNUM(f) OPT_EXTRA(f, START_BUMP(f))->num /* non-dirs */
#define F_HL_PREV(f) OPT_EXTRA(f, START_BUMP(f)+inc_recurse)->num /* non-dirs */
#define F_DIR_NODE_P(f) (&OPT_EXTRA(f, START_BUMP(f) \
+ DIRNODE_EXTRA_CNT - 1)->num) /* sender dirs */
#define F_DIR_RELNAMES_P(f) (&OPT_EXTRA(f, START_BUMP(f) + DIRNODE_EXTRA_CNT \
+ PTR_EXTRA_CNT - 1)->num) /* sender dirs */
#define F_DIR_DEFACL(f) OPT_EXTRA(f, START_BUMP(f))->unum /* receiver dirs */
#define F_DIR_DEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + ACL_BUMP(f) \
+ DEV_EXTRA_CNT - 1)->unum) /* receiver dirs */
/* This optional item might follow an F_HL_*() item. */
#define F_RDEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) + DEV_EXTRA_CNT - 1)->unum)
/* The sum is only present on regular files. */
#define F_SUM(f) ((char*)OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) \
+ SUM_EXTRA_CNT - 1))
/* Some utility defines: */
#define F_IS_ACTIVE(f) (f)->basename[0]
#define F_IS_HLINKED(f) ((f)->flags & FLAG_HLINKED)
#define F_HLINK_NOT_FIRST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_FIRST)
#define F_HLINK_NOT_LAST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_LAST)
/* These access the F_DIR_DEV_P() and F_RDEV_P() values: */
#define DEV_MAJOR(a) (a)[0]
#define DEV_MINOR(a) (a)[1]
/* These access the F_DIRS_NODE_P() values: */
#define DIR_PARENT(a) (a)[0]
#define DIR_FIRST_CHILD(a) (a)[1]
#define DIR_NEXT_SIBLING(a) (a)[2]
#define IS_MISSING_FILE(statbuf) ((statbuf).st_mode == 0)
/*
* Start the flist array at FLIST_START entries and grow it
* by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
*/
#define FLIST_START (32 * 1024)
#define FLIST_LINEAR (FLIST_START * 512)
/*
* Extent size for allocation pools: A minimum size of 128KB
* is needed to mmap them so that freeing will release the
* space to the OS.
*
* Larger sizes reduce leftover fragments and speed free calls
* (when they happen). Smaller sizes increase the chance of
* freed allocations freeing whole extents.
*/
#define NORMAL_EXTENT (256 * 1024)
#define SMALL_EXTENT (128 * 1024)
#define FLIST_TEMP (1<<1)
struct file_list {
struct file_list *next, *prev;
struct file_struct **files, **sorted;
alloc_pool_t file_pool;
void *pool_boundary;
int used, malloced;
int low, high; /* 0-relative index values excluding empties */
int ndx_start; /* the start offset for inc_recurse mode */
int flist_num; /* 1-relative file_list number or 0 */
int parent_ndx; /* dir_flist index of parent directory */
int in_progress, to_redo;
};
#define SUMFLG_SAME_OFFSET (1<<0)
struct sum_buf {
OFF_T offset; /**< offset in file of this chunk */
int32 len; /**< length of chunk of file */
uint32 sum1; /**< simple checksum */
int32 chain; /**< next hash-table collision */
short flags; /**< flag bits */
char sum2[SUM_LENGTH]; /**< checksum */
};
struct sum_struct {
OFF_T flength; /**< total file length */
struct sum_buf *sums; /**< points to info for each chunk */
int32 count; /**< how many chunks */
int32 blength; /**< block_length */
int32 remainder; /**< flength % block_length */
int s2length; /**< sum2_length */
};
struct map_struct {
OFF_T file_size; /* File size (from stat) */
OFF_T p_offset; /* Window start */
OFF_T p_fd_offset; /* offset of cursor in fd ala lseek */
char *p; /* Window pointer */
int32 p_size; /* Largest window size we allocated */
int32 p_len; /* Latest (rounded) window size */
int32 def_window_size; /* Default window size */
int fd; /* File Descriptor */
int status; /* first errno from read errors */
};
#define NAME_IS_FILE (0) /* filter name as a file */
#define NAME_IS_DIR (1<<0) /* filter name as a dir */
#define NAME_IS_XATTR (1<<2) /* filter name as an xattr */
#define FILTRULE_WILD (1<<0) /* pattern has '*', '[', and/or '?' */
#define FILTRULE_WILD2 (1<<1) /* pattern has '**' */
#define FILTRULE_WILD2_PREFIX (1<<2) /* pattern starts with "**" */
#define FILTRULE_WILD3_SUFFIX (1<<3) /* pattern ends with "***" */
#define FILTRULE_ABS_PATH (1<<4) /* path-match on absolute path */
#define FILTRULE_INCLUDE (1<<5) /* this is an include, not an exclude */
#define FILTRULE_DIRECTORY (1<<6) /* this matches only directories */
#define FILTRULE_WORD_SPLIT (1<<7) /* split rules on whitespace */
#define FILTRULE_NO_INHERIT (1<<8) /* don't inherit these rules */
#define FILTRULE_NO_PREFIXES (1<<9) /* parse no prefixes from patterns */
#define FILTRULE_MERGE_FILE (1<<10)/* specifies a file to merge */
#define FILTRULE_PERDIR_MERGE (1<<11)/* merge-file is searched per-dir */
#define FILTRULE_EXCLUDE_SELF (1<<12)/* merge-file name should be excluded */
#define FILTRULE_FINISH_SETUP (1<<13)/* per-dir merge file needs setup */
#define FILTRULE_NEGATE (1<<14)/* rule matches when pattern does not */
#define FILTRULE_CVS_IGNORE (1<<15)/* rule was -C or :C */
#define FILTRULE_SENDER_SIDE (1<<16)/* rule applies to the sending side */
#define FILTRULE_RECEIVER_SIDE (1<<17)/* rule applies to the receiving side */
#define FILTRULE_CLEAR_LIST (1<<18)/* this item is the "!" token */
#define FILTRULE_PERISHABLE (1<<19)/* perishable if parent dir goes away */
#define FILTRULE_XATTR (1<<20)/* rule only applies to xattr names */
#define FILTRULES_SIDES (FILTRULE_SENDER_SIDE | FILTRULE_RECEIVER_SIDE)
typedef struct filter_struct {
struct filter_struct *next;
char *pattern;
uint32 rflags;
union {
int slash_cnt;
struct filter_list_struct *mergelist;
} u;
} filter_rule;
typedef struct filter_list_struct {
filter_rule *head;
filter_rule *tail;
char *debug_type;
} filter_rule_list;
struct stats {
int64 total_size;
int64 total_transferred_size;
int64 total_written;
int64 total_read;
int64 literal_data;
int64 matched_data;
int64 flist_buildtime;
int64 flist_xfertime;
int64 flist_size;
int num_files, num_dirs, num_symlinks, num_devices, num_specials;
int created_files, created_dirs, created_symlinks, created_devices, created_specials;
int deleted_files, deleted_dirs, deleted_symlinks, deleted_devices, deleted_specials;
int xferred_files;
};
struct chmod_mode_struct;
struct flist_ndx_item {
struct flist_ndx_item *next;
int ndx;
};
typedef struct {
struct flist_ndx_item *head, *tail;
} flist_ndx_list;
#define EMPTY_ITEM_LIST {NULL, 0, 0}
typedef struct {
void *items;
size_t count;
size_t malloced;
} item_list;
#define EXPAND_ITEM_LIST(lp, type, incr) \