rsync.h

   1 /*
   2  * Copyright (C) 1996, 2000 Andrew Tridgell
   3  * Copyright (C) 1996 Paul Mackerras
   4  * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
   5  * Copyright (C) 2003-2007 Wayne Davison
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, visit the http://fsf.org website.
  19  */
  20
  21 #define False 0
  22 #define True 1
  23
  24 #define BLOCK_SIZE 700
  25 #define RSYNC_RSH_ENV "RSYNC_RSH"
  26 #define RSYNC_RSH_IO_ENV "RSYNC_RSH_IO"
  27
  28 #define RSYNC_NAME "rsync"
  29 /* RSYNCD_SYSCONF is now set in config.h */
  30 #define RSYNCD_USERCONF "rsyncd.conf"
  31
  32 #define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
  33 #define URL_PREFIX "rsync://"
  34
  35 #define SYMLINK_PREFIX "/rsyncd-munged/"
  36 #define SYMLINK_PREFIX_LEN ((int)sizeof SYMLINK_PREFIX - 1)
  37
  38 #define BACKUP_SUFFIX "~"
  39
  40 /* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
  41    incompatible with older versions :-( */
  42 #define CHAR_OFFSET 0
  43
  44 /* These flags are only used during the flist transfer. */
  45
  46 #define XMIT_TOP_DIR (1<<0)
  47 #define XMIT_SAME_MODE (1<<1)
  48 #define XMIT_SAME_RDEV_pre28 (1<<2)     /* protocols 20 - 27  */
  49 #define XMIT_EXTENDED_FLAGS (1<<2)      /* protocols 28 - now */
  50 #define XMIT_SAME_UID (1<<3)
  51 #define XMIT_SAME_GID (1<<4)
  52 #define XMIT_SAME_NAME (1<<5)
  53 #define XMIT_LONG_NAME (1<<6)
  54 #define XMIT_SAME_TIME (1<<7)
  55 #define XMIT_SAME_RDEV_MAJOR (1<<8)     /* protocols 28 - now (devices only) */
  56 #define XMIT_NO_CONTENT_DIR (1<<8)      /* protocols 30 - now (dirs only) */
  57 #define XMIT_HLINKED (1<<9)             /* protocols 28 - now */
  58 #define XMIT_SAME_DEV_pre30 (1<<10)     /* protocols 28 - 29  */
  59 #define XMIT_USER_NAME_FOLLOWS (1<<10)  /* protocols 30 - now */
  60 #define XMIT_RDEV_MINOR_8_pre30 (1<<11) /* protocols 28 - 29  */
  61 #define XMIT_GROUP_NAME_FOLLOWS (1<<11) /* protocols 30 - now */
  62 #define XMIT_HLINK_FIRST (1<<12)        /* protocols 30 - now (HLINKED files only) */
  63
  64 /* These flags are used in the live flist data. */
  65
  66 #define FLAG_TOP_DIR (1<<0)     /* sender/receiver/generator */
  67 #define FLAG_FILE_SENT (1<<1)   /* sender/receiver/generator */
  68 #define FLAG_DIR_CREATED (1<<1) /* generator */
  69 #define FLAG_CONTENT_DIR (1<<2) /* sender/receiver/generator */
  70 #define FLAG_MOUNT_DIR (1<<3)   /* sender/generator */
  71 #define FLAG_DUPLICATE (1<<4)   /* sender */
  72 #define FLAG_MISSING_DIR (1<<4) /* generator */
  73 #define FLAG_HLINKED (1<<5)     /* receiver/generator (checked on all types) */
  74 #define FLAG_HLINK_FIRST (1<<6) /* receiver/generator (w/FLAG_HLINKED) */
  75 #define FLAG_IMPLIED_DIR (1<<6) /* sender/receiver/generator (dirs only) */
  76 #define FLAG_HLINK_LAST (1<<7)  /* receiver/generator */
  77 #define FLAG_HLINK_DONE (1<<8)  /* receiver/generator (checked on all types) */
  78 #define FLAG_LENGTH64 (1<<9)    /* sender/receiver/generator */
  79 #define FLAG_SKIP_GROUP (1<<10) /* receiver/generator */
  80
  81 /* These flags are passed to functions but not stored. */
  82
  83 #define FLAG_DIVERT_DIRS (1<<16)/* sender */
  84
  85 #define BITS_SET(val,bits) (((val) & (bits)) == (bits))
  86 #define BITS_SETnUNSET(val,onbits,offbits) (((val) & ((onbits)|(offbits))) == (onbits))
  87 #define BITS_EQUAL(b1,b2,mask) (((unsigned)(b1) & (unsigned)(mask)) \
  88                              == ((unsigned)(b2) & (unsigned)(mask)))
  89
  90 /* update this if you make incompatible changes */
  91 #define PROTOCOL_VERSION 30
  92
  93 /* This is used when working on a new protocol version in CVS, and should
  94  * be a new non-zero value for each CVS change that affects the protocol.
  95  * It must ALWAYS be 0 when the protocol goes final! */
  96 #define SUBPROTOCOL_VERSION 16
  97
  98 /* We refuse to interoperate with versions that are not in this range.
  99  * Note that we assume we'll work with later versions: the onus is on
 100  * people writing them to make sure that they don't send us anything
 101  * we won't understand.
 102  *
 103  * Interoperation with old but supported protocol versions
 104  * should cause a warning to be printed.  At a future date
 105  * the old protocol will become the minimum and
 106  * compatibility code removed.
 107  *
 108  * There are two possible explanations for the limit at
 109  * MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
 110  * do not interoperate with us, and (more likely) so that we can
 111  * detect an attempt to connect rsync to a non-rsync server, which is
 112  * unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
 113  * MAX_PROTOCOL_VERSION. */
 114
 115 #define MIN_PROTOCOL_VERSION 20
 116 #define OLD_PROTOCOL_VERSION 25
 117 #define MAX_PROTOCOL_VERSION 40
 118
 119 #define FILECNT_LOOKAHEAD 1000
 120
 121 #define RSYNC_PORT 873
 122
 123 #define SPARSE_WRITE_SIZE (1024)
 124 #define WRITE_SIZE (32*1024)
 125 #define CHUNK_SIZE (32*1024)
 126 #define MAX_MAP_SIZE (256*1024)
 127 #define IO_BUFFER_SIZE (4092)
 128 #define MAX_BLOCK_SIZE ((int32)1 << 17)
 129
 130 #define IOERR_GENERAL   (1<<0) /* For backward compatibility, this must == 1 */
 131 #define IOERR_VANISHED  (1<<1)
 132 #define IOERR_DEL_LIMIT (1<<2)
 133
 134 #define MAX_ARGS 1000
 135 #define MAX_BASIS_DIRS 20
 136 #define MAX_SERVER_ARGS (MAX_BASIS_DIRS*2 + 100)
 137
 138 #define MPLEX_BASE 7
 139
 140 #define NO_FILTERS      0
 141 #define SERVER_FILTERS  1
 142 #define ALL_FILTERS     2
 143
 144 #define XFLG_FATAL_ERRORS       (1<<0)
 145 #define XFLG_OLD_PREFIXES       (1<<1)
 146 #define XFLG_ANCHORED2ABS       (1<<2)
 147 #define XFLG_ABS_IF_SLASH       (1<<3)
 148
 149 #define ATTRS_REPORT            (1<<0)
 150 #define ATTRS_SKIP_MTIME        (1<<1)
 151
 152 #define FULL_FLUSH      1
 153 #define NORMAL_FLUSH    0
 154
 155 #define PDIR_CREATE     1
 156 #define PDIR_DELETE     0
 157
 158 /* Note: 0x00 - 0x7F are used for basis_dir[] indexes! */
 159 #define FNAMECMP_BASIS_DIR_LOW  0x00 /* Must remain 0! */
 160 #define FNAMECMP_BASIS_DIR_HIGH 0x7F
 161 #define FNAMECMP_FNAME          0x80
 162 #define FNAMECMP_PARTIAL_DIR    0x81
 163 #define FNAMECMP_BACKUP         0x82
 164 #define FNAMECMP_FUZZY          0x83
 165
 166 /* For use by the itemize_changes code */
 167 #define ITEM_REPORT_ATIME (1<<0)
 168 #define ITEM_REPORT_CHECKSUM (1<<1)
 169 #define ITEM_REPORT_SIZE (1<<2)
 170 #define ITEM_REPORT_TIME (1<<3)
 171 #define ITEM_REPORT_PERMS (1<<4)
 172 #define ITEM_REPORT_OWNER (1<<5)
 173 #define ITEM_REPORT_GROUP (1<<6)
 174 #define ITEM_REPORT_ACL (1<<7)
 175 #define ITEM_REPORT_XATTR (1<<8)
 176 #define ITEM_BASIS_TYPE_FOLLOWS (1<<11)
 177 #define ITEM_XNAME_FOLLOWS (1<<12)
 178 #define ITEM_IS_NEW (1<<13)
 179 #define ITEM_LOCAL_CHANGE (1<<14)
 180 #define ITEM_TRANSFER (1<<15)
 181 /* These are outside the range of the transmitted flags. */
 182 #define ITEM_MISSING_DATA (1<<16)          /* used by log_formatted() */
 183 #define ITEM_DELETED (1<<17)               /* used by log_formatted() */
 184 #define ITEM_MATCHED (1<<18)               /* used by itemize() */
 185
 186 #define SIGNIFICANT_ITEM_FLAGS (~(\
 187         ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE))
 188
 189 #define CFN_KEEP_LEADING_DOT_DIR (1<<0)
 190 #define CFN_KEEP_TRAILING_SLASH (1<<1)
 191 #define CFN_DROP_TRAILING_DOT_DIR (1<<2)
 192 #define CFN_COLLAPSE_DOT_DOT_DIRS (1<<3)
 193
 194 /* Log-message categories.  FLOG only goes to the log file, not the client;
 195  * FCLIENT is the opposite. */
 196 enum logcode {
 197     FNONE=0, /* never sent */
 198     FERROR_XFER=1, FINFO=2, /* sent over socket for any protocol */
 199     FERROR=3, FWARNING=4, /* sent over socket for protocols >= 30 */
 200     FERROR_SOCKET=5, FLOG=6, /* only sent via receiver -> generator pipe */
 201     FCLIENT=7 /* never transmitted (e.g. server converts to FINFO) */
 202 };
 203
 204 /* Messages types that are sent over the message channel.  The logcode
 205  * values must all be present here with identical numbers. */
 206 enum msgcode {
 207         MSG_DATA=0,     /* raw data on the multiplexed stream */
 208         MSG_ERROR_XFER=FERROR_XFER, MSG_INFO=FINFO, /* remote logging */
 209         MSG_ERROR=FERROR, MSG_WARNING=FWARNING, /* protocol-30 remote logging */
 210         MSG_ERROR_SOCKET=FERROR_SOCKET, /* sibling logging */
 211         MSG_LOG=FLOG, MSG_CLIENT=FCLIENT, /* sibling logging */
 212         MSG_REDO=9,     /* reprocess indicated flist index */
 213         MSG_FLIST=20,   /* extra file list over sibling socket */
 214         MSG_FLIST_EOF=21,/* we've transmitted all the file lists */
 215         MSG_IO_ERROR=22,/* the sending side had an I/O error */
 216         MSG_NOOP=42,    /* a do-nothing message */
 217         MSG_SUCCESS=100,/* successfully updated indicated flist index */
 218         MSG_DELETED=101,/* successfully deleted a file on receiving side */
 219         MSG_NO_SEND=102,/* sender failed to open a file we wanted */
 220         MSG_DONE=86     /* current phase is done */
 221 };
 222
 223 #define NDX_DONE -1
 224 #define NDX_FLIST_EOF -2
 225 #define NDX_FLIST_OFFSET -101
 226
 227 #include "errcode.h"
 228
 229 #include "config.h"
 230
 231 /* The default RSYNC_RSH is always set in config.h. */
 232
 233 #include <stdio.h>
 234 #ifdef HAVE_SYS_TYPES_H
 235 # include <sys/types.h>
 236 #endif
 237 #ifdef HAVE_SYS_STAT_H
 238 # include <sys/stat.h>
 239 #endif
 240 #ifdef STDC_HEADERS
 241 # include <stdlib.h>
 242 # include <stddef.h>
 243 #else
 244 # ifdef HAVE_STDLIB_H
 245 #  include <stdlib.h>
 246 # endif
 247 #endif
 248 #ifdef HAVE_STRING_H
 249 # if !defined STDC_HEADERS && defined HAVE_MEMORY_H
 250 #  include <memory.h>
 251 # endif
 252 # include <string.h>
 253 #endif
 254 #ifdef HAVE_STRINGS_H
 255 # include <strings.h>
 256 #endif
 257 #ifdef HAVE_INTTYPES_H
 258 # include <inttypes.h>
 259 #endif
 260 #ifdef HAVE_STDINT_H
 261 # include <stdint.h>
 262 #endif
 263 #ifdef HAVE_UNISTD_H
 264 # include <unistd.h>
 265 #endif
 266
 267 #ifdef HAVE_SYS_PARAM_H
 268 #include <sys/param.h>
 269 #endif
 270
 271 #if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H)
 272 #include <malloc.h>
 273 #endif
 274
 275 #ifdef HAVE_SYS_SOCKET_H
 276 #include <sys/socket.h>
 277 #endif
 278
 279 #ifdef TIME_WITH_SYS_TIME
 280 #include <sys/time.h>
 281 #include <time.h>
 282 #else
 283 #ifdef HAVE_SYS_TIME_H
 284 #include <sys/time.h>
 285 #else
 286 #include <time.h>
 287 #endif
 288 #endif
 289
 290 #ifdef HAVE_FCNTL_H
 291 #include <fcntl.h>
 292 #else
 293 #ifdef HAVE_SYS_FCNTL_H
 294 #include <sys/fcntl.h>
 295 #endif
 296 #endif
 297
 298 #ifdef HAVE_SYS_IOCTL_H
 299 #include <sys/ioctl.h>
 300 #endif
 301
 302 #ifdef HAVE_SYS_FILIO_H
 303 #include <sys/filio.h>
 304 #endif
 305
 306 #include <signal.h>
 307 #ifdef HAVE_SYS_WAIT_H
 308 #include <sys/wait.h>
 309 #endif
 310 #ifdef HAVE_CTYPE_H
 311 #include <ctype.h>
 312 #endif
 313 #ifdef HAVE_GRP_H
 314 #include <grp.h>
 315 #endif
 316 #include <errno.h>
 317
 318 #ifdef HAVE_UTIME_H
 319 #include <utime.h>
 320 #endif
 321
 322 #ifdef HAVE_SYS_SELECT_H
 323 #include <sys/select.h>
 324 #endif
 325
 326 #ifdef HAVE_SYS_MODE_H
 327 /* apparently AIX needs this for S_ISLNK */
 328 #ifndef S_ISLNK
 329 #include <sys/mode.h>
 330 #endif
 331 #endif
 332
 333 #ifdef HAVE_GLOB_H
 334 #include <glob.h>
 335 #endif
 336
 337 /* these are needed for the uid/gid mapping code */
 338 #include <pwd.h>
 339 #include <grp.h>
 340
 341 #include <stdarg.h>
 342 #include <netinet/in.h>
 343 #include <arpa/inet.h>
 344 #ifdef HAVE_NETDB_H
 345 #include <netdb.h>
 346 #endif
 347 #include <syslog.h>
 348 #include <sys/file.h>
 349
 350 #ifdef HAVE_DIRENT_H
 351 # include <dirent.h>
 352 #else
 353 # define dirent direct
 354 # ifdef HAVE_SYS_NDIR_H
 355 #  include <sys/ndir.h>
 356 # endif
 357 # ifdef HAVE_SYS_DIR_H
 358 #  include <sys/dir.h>
 359 # endif
 360 # ifdef HAVE_NDIR_H
 361 #  include <ndir.h>
 362 # endif
 363 #endif
 364
 365 #ifdef MAJOR_IN_MKDEV
 366 #include <sys/mkdev.h>
 367 # if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
 368 #  define makedev mkdev
 369 # endif
 370 #elif defined MAJOR_IN_SYSMACROS
 371 #include <sys/sysmacros.h>
 372 #endif
 373
 374 #ifdef MAKEDEV_TAKES_3_ARGS
 375 #define MAKEDEV(devmajor,devminor) makedev(0,devmajor,devminor)
 376 #else
 377 #define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor)
 378 #endif
 379
 380 #ifdef HAVE_COMPAT_H
 381 #include <compat.h>
 382 #endif
 383
 384 #ifdef HAVE_LIMITS_H
 385 # include <limits.h>
 386 #endif
 387
 388 #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H
 389 #include <iconv.h>
 390 #ifndef ICONV_CONST
 391 #define ICONV_CONST
 392 #endif
 393 #else
 394 #ifdef ICONV_CONST
 395 #undef ICONV_CONST
 396 #endif
 397 #ifdef ICONV_OPTION
 398 #undef ICONV_OPTION
 399 #endif
 400 #ifdef iconv_t
 401 #undef iconv_t
 402 #endif
 403 #define iconv_t int
 404 #endif
 405
 406 #include <assert.h>
 407
 408 #include "lib/pool_alloc.h"
 409
 410 #ifndef HAVE_ID_T
 411 typedef int id_t;
 412 #endif
 413 #ifndef HAVE_PID_T
 414 typedef int pid_t;
 415 #endif
 416 #ifndef HAVE_MODE_T
 417 typedef int mode_t;
 418 #endif
 419 #ifndef HAVE_OFF_T
 420 typedef long off_t;
 421 #endif
 422 #ifndef HAVE_SIZE_T
 423 typedef unsigned int size_t;
 424 #endif
 425
 426 #define BOOL int
 427
 428 #ifndef uchar
 429 #define uchar unsigned char
 430 #endif
 431
 432 #ifdef SIGNED_CHAR_OK
 433 #define schar signed char
 434 #else
 435 #define schar char
 436 #endif
 437
 438 #ifndef int16
 439 #if SIZEOF_INT16_T == 2
 440 # define int16 int16_t
 441 #else
 442 # define int16 short
 443 #endif
 444 #endif
 445
 446 #ifndef uint16
 447 #if SIZEOF_UINT16_T == 2
 448 # define uint16 uint16_t
 449 #else
 450 # define uint16 unsigned int16
 451 #endif
 452 #endif
 453
 454 /* Find a variable that is either exactly 32-bits or longer.
 455  * If some code depends on 32-bit truncation, it will need to
 456  * take special action in a "#if SIZEOF_INT32 > 4" section. */
 457 #ifndef int32
 458 #if SIZEOF_INT32_T == 4
 459 # define int32 int32_t
 460 # define SIZEOF_INT32 4
 461 #elif SIZEOF_INT == 4
 462 # define int32 int
 463 # define SIZEOF_INT32 4
 464 #elif SIZEOF_LONG == 4
 465 # define int32 long
 466 # define SIZEOF_INT32 4
 467 #elif SIZEOF_SHORT == 4
 468 # define int32 short
 469 # define SIZEOF_INT32 4
 470 #elif SIZEOF_INT > 4
 471 # define int32 int
 472 # define SIZEOF_INT32 SIZEOF_INT
 473 #elif SIZEOF_LONG > 4
 474 # define int32 long
 475 # define SIZEOF_INT32 SIZEOF_LONG
 476 #else
 477 # error Could not find a 32-bit integer variable
 478 #endif
 479 #else
 480 # define SIZEOF_INT32 4
 481 #endif
 482
 483 #ifndef uint32
 484 #if SIZEOF_UINT32_T == 4
 485 # define uint32 uint32_t
 486 #else
 487 # define uint32 unsigned int32
 488 #endif
 489 #endif
 490
 491 #if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64
 492 #define OFF_T off_t
 493 #define STRUCT_STAT struct stat
 494 #else
 495 #define OFF_T off64_t
 496 #define STRUCT_STAT struct stat64
 497 #define USE_STAT64_FUNCS 1
 498 #endif
 499
 500 /* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF
 501  * that's the maximum size the file system can handle and there is no
 502  * 64-bit type available.  The rsync source must therefore take steps
 503  * to ensure that any code that really requires a 64-bit integer has
 504  * it (e.g. the checksum code uses two 32-bit integers for its 64-bit
 505  * counter). */
 506 #if SIZEOF_INT64_T == 8
 507 # define int64 int64_t
 508 # define SIZEOF_INT64 8
 509 #elif SIZEOF_LONG == 8
 510 # define int64 long
 511 # define SIZEOF_INT64 8
 512 #elif SIZEOF_INT == 8
 513 # define int64 int
 514 # define SIZEOF_INT64 8
 515 #elif SIZEOF_LONG_LONG == 8
 516 # define int64 long long
 517 # define SIZEOF_INT64 8
 518 #elif SIZEOF_OFF64_T == 8
 519 # define int64 off64_t
 520 # define SIZEOF_INT64 8
 521 #elif SIZEOF_OFF_T == 8
 522 # define int64 off_t
 523 # define SIZEOF_INT64 8
 524 #elif SIZEOF_INT > 8
 525 # define int64 int
 526 # define SIZEOF_INT64 SIZEOF_INT
 527 #elif SIZEOF_LONG > 8
 528 # define int64 long
 529 # define SIZEOF_INT64 SIZEOF_LONG
 530 #elif SIZEOF_LONG_LONG > 8
 531 # define int64 long long
 532 # define SIZEOF_INT64 SIZEOF_LONG_LONG
 533 #else
 534 /* As long as it gets... */
 535 # define int64 off_t
 536 # define SIZEOF_INT64 SIZEOF_OFF_T
 537 #endif
 538
 539 struct hashtable {
 540         void *nodes;
 541         int32 size, entries;
 542         uint32 node_size;
 543 };
 544
 545 struct ht_int32_node {
 546         void *data;
 547         int32 key;
 548 };
 549
 550 struct ht_int64_node {
 551         void *data;
 552         int64 key;
 553 };
 554
 555 #define HT_NODE(tbl, bkts, i) ((void*)((char*)(bkts) + (i)*(tbl)->node_size))
 556 #define HT_KEY(node, k64) ((k64)? ((struct ht_int64_node*)(node))->key \
 557                          : (int64)((struct ht_int32_node*)(node))->key)
 558
 559 #ifndef MIN
 560 #define MIN(a,b) ((a)<(b)?(a):(b))
 561 #endif
 562
 563 #ifndef MAX
 564 #define MAX(a,b) ((a)>(b)?(a):(b))
 565 #endif
 566
 567 #ifndef MAXHOSTNAMELEN
 568 #define MAXHOSTNAMELEN 256
 569 #endif
 570
 571 #define SUM_LENGTH 16
 572 #define SHORT_SUM_LENGTH 2
 573 #define BLOCKSUM_BIAS 10
 574
 575 #ifndef MAXPATHLEN
 576 #define MAXPATHLEN 1024
 577 #endif
 578
 579 /* We want a roomy line buffer that can hold more than MAXPATHLEN,
 580  * and significantly more than an overly short MAXPATHLEN. */
 581 #if MAXPATHLEN < 4096
 582 #define BIGPATHBUFLEN (4096+1024)
 583 #else
 584 #define BIGPATHBUFLEN (MAXPATHLEN+1024)
 585 #endif
 586
 587 #ifndef NAME_MAX
 588 #define NAME_MAX 255
 589 #endif
 590
 591 #ifndef INADDR_NONE
 592 #define INADDR_NONE 0xffffffff
 593 #endif
 594
 595 #ifndef IN_LOOPBACKNET
 596 #define IN_LOOPBACKNET 127
 597 #endif
 598
 599 #if HAVE_UNIXWARE_ACLS|HAVE_SOLARIS_ACLS|HAVE_HPUX_ACLS
 600 #define ACLS_NEED_MASK 1
 601 #endif
 602
 603 union file_extras {
 604         int32 num;
 605         uint32 unum;
 606 };
 607
 608 struct file_struct {
 609         const char *dirname;    /* The dir info inside the transfer */
 610         time_t modtime;         /* When the item was last modified */
 611         uint32 len32;           /* Lowest 32 bits of the file's length */
 612         uint16 mode;            /* The item's type and permissions */
 613         uint16 flags;           /* The FLAG_* bits for this item */
 614         const char basename[1]; /* The basename (AKA filename) follows */
 615 };
 616
 617 extern int file_extra_cnt;
 618 extern int inc_recurse;
 619 extern int uid_ndx;
 620 extern int gid_ndx;
 621 extern int acls_ndx;
 622 extern int xattrs_ndx;
 623
 624 #define FILE_STRUCT_LEN (offsetof(struct file_struct, basename))
 625 #define EXTRA_LEN (sizeof (union file_extras))
 626 #define PTR_EXTRA_CNT ((sizeof (char *) + EXTRA_LEN - 1) / EXTRA_LEN)
 627 #define DEV_EXTRA_CNT 2
 628 #define DIRNODE_EXTRA_CNT 3
 629 #define SUM_EXTRA_CNT ((MAX_DIGEST_LEN + EXTRA_LEN - 1) / EXTRA_LEN)
 630
 631 #define REQ_EXTRA(f,ndx) ((union file_extras*)(f) - (ndx))
 632 #define OPT_EXTRA(f,bump) ((union file_extras*)(f) - file_extra_cnt - 1 - (bump))
 633
 634 #define LEN64_BUMP(f) ((f)->flags & FLAG_LENGTH64 ? 1 : 0)
 635 #define HLINK_BUMP(f) ((f)->flags & (FLAG_HLINKED|FLAG_HLINK_DONE) ? inc_recurse+1 : 0)
 636 #define ACL_BUMP(f) (acls_ndx ? 1 : 0)
 637
 638 /* The length applies to all items. */
 639 #if SIZEOF_INT64 < 8
 640 #define F_LENGTH(f) ((int64)(f)->len32)
 641 #else
 642 #define F_LENGTH(f) ((int64)(f)->len32 + ((f)->flags & FLAG_LENGTH64 \
 643                    ? (int64)OPT_EXTRA(f, 0)->unum << 32 : 0))
 644 #endif
 645
 646 /* If there is a symlink string, it is always right after the basename */
 647 #define F_SYMLINK(f) ((f)->basename + strlen((f)->basename) + 1)
 648
 649 /* The sending side always has this available: */
 650 #define F_PATHNAME(f) (*(const char**)REQ_EXTRA(f, PTR_EXTRA_CNT))
 651
 652 /* The receiving side always has this available: */
 653 #define F_DEPTH(f) REQ_EXTRA(f, 1)->num
 654
 655 /* When the associated option is on, all entries will have these present: */
 656 #define F_OWNER(f) REQ_EXTRA(f, uid_ndx)->unum
 657 #define F_GROUP(f) REQ_EXTRA(f, gid_ndx)->unum
 658 #define F_ACL(f) REQ_EXTRA(f, acls_ndx)->num
 659 #define F_XATTR(f) REQ_EXTRA(f, xattrs_ndx)->num
 660 #define F_NDX(f) REQ_EXTRA(f, unsort_ndx)->num
 661
 662 /* These items are per-entry optional: */
 663 #define F_HL_GNUM(f) OPT_EXTRA(f, LEN64_BUMP(f))->num /* non-dirs */
 664 #define F_HL_PREV(f) OPT_EXTRA(f, LEN64_BUMP(f)+inc_recurse)->num /* non-dirs */
 665 #define F_DIR_NODE_P(f) (&OPT_EXTRA(f, LEN64_BUMP(f) \
 666                                 + DIRNODE_EXTRA_CNT - 1)->num) /* sender dirs */
 667 #define F_DIR_RELNAMES_P(f) (&OPT_EXTRA(f, LEN64_BUMP(f) + DIRNODE_EXTRA_CNT \
 668                                 + PTR_EXTRA_CNT - 1)->num) /* sender dirs */
 669 #define F_DIR_DEFACL(f) OPT_EXTRA(f, LEN64_BUMP(f))->unum /* receiver dirs */
 670 #define F_DIR_DEV_P(f) (&OPT_EXTRA(f, LEN64_BUMP(f) + ACL_BUMP(f) \
 671                                 + DEV_EXTRA_CNT - 1)->unum) /* receiver dirs */
 672
 673 /* This optional item might follow an F_HL_*() item.
 674  * (Note: a device doesn't need to check LEN64_BUMP(f).) */
 675 #define F_RDEV_P(f) (&OPT_EXTRA(f, HLINK_BUMP(f) + DEV_EXTRA_CNT - 1)->unum)
 676
 677 /* The sum is only present on regular files. */
 678 #define F_SUM(f) ((char*)OPT_EXTRA(f, LEN64_BUMP(f) + HLINK_BUMP(f) \
 679                                     + SUM_EXTRA_CNT - 1))
 680
 681 /* Some utility defines: */
 682 #define F_IS_ACTIVE(f) (f)->basename[0]
 683 #define F_IS_HLINKED(f) ((f)->flags & FLAG_HLINKED)
 684
 685 #define F_HLINK_NOT_FIRST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_FIRST)
 686 #define F_HLINK_NOT_LAST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_LAST)
 687
 688 /* These access the F_DIR_DEV_P() and F_RDEV_P() values: */
 689 #define DEV_MAJOR(a) (a)[0]
 690 #define DEV_MINOR(a) (a)[1]
 691
 692 /* These access the F_DIRS_NODE_P() values: */
 693 #define DIR_PARENT(a) (a)[0]
 694 #define DIR_FIRST_CHILD(a) (a)[1]
 695 #define DIR_NEXT_SIBLING(a) (a)[2]
 696
 697 /*
 698  * Start the flist array at FLIST_START entries and grow it
 699  * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
 700  */
 701 #define FLIST_START     (32 * 1024)
 702 #define FLIST_LINEAR    (FLIST_START * 512)
 703
 704 /*
 705  * Extent size for allocation pools: A minimum size of 128KB
 706  * is needed to mmap them so that freeing will release the
 707  * space to the OS.
 708  *
 709  * Larger sizes reduce leftover fragments and speed free calls
 710  * (when they happen). Smaller sizes increase the chance of
 711  * freed allocations freeing whole extents.
 712  */
 713 #define NORMAL_EXTENT   (256 * 1024)
 714 #define SMALL_EXTENT    (128 * 1024)
 715
 716 #define FLIST_TEMP      (1<<1)
 717
 718 struct file_list {
 719         struct file_list *next, *prev;
 720         struct file_struct **files, **sorted;
 721         alloc_pool_t file_pool;
 722         void *pool_boundary;
 723         int used, malloced;
 724         int low, high;  /* 0-relative index values excluding empties */
 725         int ndx_start;  /* the start offset for inc_recurse mode */
 726         int flist_num;  /* 1-relative file_list number or 0 */
 727         int parent_ndx; /* dir_flist index of parent directory */
 728         int in_progress, to_redo;
 729 };
 730
 731 #define SUMFLG_SAME_OFFSET      (1<<0)
 732
 733 struct sum_buf {
 734         OFF_T offset;           /**< offset in file of this chunk */
 735         int32 len;              /**< length of chunk of file */
 736         uint32 sum1;            /**< simple checksum */
 737         int32 chain;            /**< next hash-table collision */
 738         short flags;            /**< flag bits */
 739         char sum2[SUM_LENGTH];  /**< checksum  */
 740 };
 741
 742 struct sum_struct {
 743         OFF_T flength;          /**< total file length */
 744         struct sum_buf *sums;   /**< points to info for each chunk */
 745         int32 count;            /**< how many chunks */
 746         int32 blength;          /**< block_length */
 747         int32 remainder;        /**< flength % block_length */
 748         int s2length;           /**< sum2_length */
 749 };
 750
 751 struct map_struct {
 752         OFF_T file_size;        /* File size (from stat)                */
 753         OFF_T p_offset;         /* Window start                         */
 754         OFF_T p_fd_offset;      /* offset of cursor in fd ala lseek     */
 755         char *p;                /* Window pointer                       */
 756         int32 p_size;           /* Largest window size we allocated     */
 757         int32 p_len;            /* Latest (rounded) window size         */
 758         int32 def_window_size;  /* Default window size                  */
 759         int fd;                 /* File Descriptor                      */
 760         int status;             /* first errno from read errors         */
 761 };
 762
 763 #define MATCHFLG_WILD           (1<<0) /* pattern has '*', '[', and/or '?' */
 764 #define MATCHFLG_WILD2          (1<<1) /* pattern has '**' */
 765 #define MATCHFLG_WILD2_PREFIX   (1<<2) /* pattern starts with "**" */
 766 #define MATCHFLG_WILD3_SUFFIX   (1<<3) /* pattern ends with "***" */
 767 #define MATCHFLG_ABS_PATH       (1<<4) /* path-match on absolute path */
 768 #define MATCHFLG_INCLUDE        (1<<5) /* this is an include, not an exclude */
 769 #define MATCHFLG_DIRECTORY      (1<<6) /* this matches only directories */
 770 #define MATCHFLG_WORD_SPLIT     (1<<7) /* split rules on whitespace */
 771 #define MATCHFLG_NO_INHERIT     (1<<8) /* don't inherit these rules */
 772 #define MATCHFLG_NO_PREFIXES    (1<<9) /* parse no prefixes from patterns */
 773 #define MATCHFLG_MERGE_FILE     (1<<10)/* specifies a file to merge */
 774 #define MATCHFLG_PERDIR_MERGE   (1<<11)/* merge-file is searched per-dir */
 775 #define MATCHFLG_EXCLUDE_SELF   (1<<12)/* merge-file name should be excluded */
 776 #define MATCHFLG_FINISH_SETUP   (1<<13)/* per-dir merge file needs setup */
 777 #define MATCHFLG_NEGATE         (1<<14)/* rule matches when pattern does not */
 778 #define MATCHFLG_CVS_IGNORE     (1<<15)/* rule was -C or :C */
 779 #define MATCHFLG_SENDER_SIDE    (1<<16)/* rule applies to the sending side */
 780 #define MATCHFLG_RECEIVER_SIDE  (1<<17)/* rule applies to the receiving side */
 781 #define MATCHFLG_CLEAR_LIST     (1<<18)/* this item is the "!" token */
 782 #define MATCHFLG_PERISHABLE     (1<<19)/* perishable if parent dir goes away */
 783
 784 #define MATCHFLGS_FROM_CONTAINER (MATCHFLG_ABS_PATH | MATCHFLG_INCLUDE \
 785                                 | MATCHFLG_DIRECTORY | MATCHFLG_SENDER_SIDE \
 786                                 | MATCHFLG_NEGATE | MATCHFLG_RECEIVER_SIDE \
 787                                 | MATCHFLG_PERISHABLE)
 788
 789 struct filter_struct {
 790         struct filter_struct *next;
 791         char *pattern;
 792         uint32 match_flags;
 793         union {
 794                 int slash_cnt;
 795                 struct filter_list_struct *mergelist;
 796         } u;
 797 };
 798
 799 struct filter_list_struct {
 800         struct filter_struct *head;
 801         struct filter_struct *tail;
 802         char *debug_type;
 803 };
 804
 805 struct stats {
 806         int64 total_size;
 807         int64 total_transferred_size;
 808         int64 total_written;
 809         int64 total_read;
 810         int64 literal_data;
 811         int64 matched_data;
 812         int64 flist_buildtime;
 813         int64 flist_xfertime;
 814         int64 flist_size;
 815         int num_files;
 816         int num_transferred_files;
 817 };
 818
 819 struct chmod_mode_struct;
 820
 821 #define EMPTY_ITEM_LIST {NULL, 0, 0}
 822
 823 typedef struct {
 824         void *items;
 825         size_t count;
 826         size_t malloced;
 827 } item_list;
 828
 829 #define EXPAND_ITEM_LIST(lp, type, incr) \
 830         (type*)expand_item_list(lp, sizeof (type), #type, incr)
 831
 832 #define EMPTY_XBUF {NULL, 0, 0, 0}
 833
 834 typedef struct {
 835         char *buf;
 836         size_t pos;  /* pos = read pos in the buf */
 837         size_t len;  /* len = chars following pos */
 838         size_t size; /* size = total space in buf */
 839 } xbuf;
 840
 841 #define INIT_XBUF(xb, str, ln, sz) (xb).buf = (str), (xb).len = (ln), (xb).size = (sz), (xb).pos = 0
 842 #define INIT_XBUF_STRLEN(xb, str) (xb).buf = (str), (xb).len = strlen((xb).buf), (xb).size = (-1), (xb).pos = 0
 843 /* This one is used to make an output xbuf based on a char[] buffer: */
 844 #define INIT_CONST_XBUF(xb, bf) (xb).buf = (bf), (xb).size = sizeof (bf), (xb).len = (xb).pos = 0
 845
 846 #define ICB_EXPAND_OUT (1<<0)
 847 #define ICB_INCLUDE_BAD (1<<1)
 848 #define ICB_INCLUDE_INCOMPLETE (1<<2)
 849
 850 #define RL_EOL_NULLS (1<<0)
 851 #define RL_DUMP_COMMENTS (1<<1)
 852 #define RL_CONVERT (1<<2)
 853
 854 typedef struct {
 855         char name_type;
 856         char fname[1]; /* has variable size */
 857 } relnamecache;
 858
 859 #include "byteorder.h"
 860 #include "lib/mdigest.h"
 861 #include "lib/wildmatch.h"
 862 #include "lib/permstring.h"
 863 #include "lib/addrinfo.h"
 864
 865 #ifndef __GNUC__
 866 #define __attribute__(x)
 867 #else
 868 # if __GNUC__ <= 2
 869 # define NORETURN
 870 # endif
 871 #endif
 872
 873 #define UNUSED(x) x __attribute__((__unused__))
 874 #ifndef NORETURN
 875 #define NORETURN __attribute__((__noreturn__))
 876 #endif
 877
 878 typedef struct {
 879     STRUCT_STAT st;
 880 #ifdef SUPPORT_ACLS
 881     struct rsync_acl *acc_acl; /* access ACL */
 882     struct rsync_acl *def_acl; /* default ACL */
 883 #endif
 884 #ifdef SUPPORT_XATTRS
 885     item_list *xattr;
 886 #endif
 887 } stat_x;
 888
 889 #define ACL_READY(sx) ((sx).acc_acl != NULL)
 890 #define XATTR_READY(sx) ((sx).xattr != NULL)
 891
 892 #include "proto.h"
 893
 894 #ifndef SUPPORT_XATTRS
 895 #define x_stat(fn,fst,xst) do_stat(fn,fst)
 896 #define x_lstat(fn,fst,xst) do_lstat(fn,fst)
 897 #define x_fstat(fd,fst,xst) do_fstat(fd,fst)
 898 #endif
 899
 900 /* We have replacement versions of these if they're missing. */
 901 #ifndef HAVE_ASPRINTF
 902 int asprintf(char **ptr, const char *format, ...);
 903 #endif
 904
 905 #ifndef HAVE_VASPRINTF
 906 int vasprintf(char **ptr, const char *format, va_list ap);
 907 #endif
 908
 909 #if !defined HAVE_VSNPRINTF || !defined HAVE_C99_VSNPRINTF
 910 #define vsnprintf rsync_vsnprintf
 911 int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
 912 #endif
 913
 914 #if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF
 915 #define snprintf rsync_snprintf
 916 int snprintf(char *str, size_t count, const char *fmt,...);
 917 #endif
 918
 919
 920 #ifndef HAVE_STRERROR
 921 extern char *sys_errlist[];
 922 #define strerror(i) sys_errlist[i]
 923 #endif
 924
 925 #ifndef HAVE_STRCHR
 926 # define strchr                 index
 927 # define strrchr                rindex
 928 #endif
 929
 930 #ifndef HAVE_ERRNO_DECL
 931 extern int errno;
 932 #endif
 933
 934 #ifdef HAVE_READLINK
 935 #define SUPPORT_LINKS 1
 936 #endif
 937 #ifdef HAVE_LINK
 938 #define SUPPORT_HARD_LINKS 1
 939 #endif
 940
 941 #ifdef HAVE_SIGACTION
 942 #define SIGACTION(n,h) sigact.sa_handler=(h), sigaction((n),&sigact,NULL)
 943 #define signal(n,h) we_need_to_call_SIGACTION_not_signal(n,h)
 944 #else
 945 #define SIGACTION(n,h) signal(n,h)
 946 #endif
 947
 948 #ifndef EWOULDBLOCK
 949 #define EWOULDBLOCK EAGAIN
 950 #endif
 951
 952 #ifndef STDIN_FILENO
 953 #define STDIN_FILENO 0
 954 #endif
 955
 956 #ifndef STDOUT_FILENO
 957 #define STDOUT_FILENO 1
 958 #endif
 959
 960 #ifndef STDERR_FILENO
 961 #define STDERR_FILENO 2
 962 #endif
 963
 964 #ifndef S_IRUSR
 965 #define S_IRUSR 0400
 966 #endif
 967
 968 #ifndef S_IWUSR
 969 #define S_IWUSR 0200
 970 #endif
 971
 972 #ifndef ACCESSPERMS
 973 #define ACCESSPERMS 0777
 974 #endif
 975
 976 #ifndef S_ISVTX
 977 #define S_ISVTX 0
 978 #endif
 979
 980 #define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
 981
 982 #ifndef _S_IFMT
 983 #define _S_IFMT        0170000
 984 #endif
 985
 986 #ifndef _S_IFLNK
 987 #define _S_IFLNK  0120000
 988 #endif
 989
 990 #ifndef S_ISLNK
 991 #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
 992 #endif
 993
 994 #ifndef S_ISBLK
 995 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
 996 #endif
 997
 998 #ifndef S_ISCHR
 999 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
1000 #endif
1001
1002 #ifndef S_ISSOCK
1003 #ifdef _S_IFSOCK
1004 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
1005 #else
1006 #define S_ISSOCK(mode) (0)
1007 #endif
1008 #endif
1009
1010 #ifndef S_ISFIFO
1011 #ifdef _S_IFIFO
1012 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
1013 #else
1014 #define S_ISFIFO(mode) (0)
1015 #endif
1016 #endif
1017
1018 #ifndef S_ISDIR
1019 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
1020 #endif
1021
1022 #ifndef S_ISREG
1023 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
1024 #endif
1025
1026 /* work out what fcntl flag to use for non-blocking */
1027 #ifdef O_NONBLOCK
1028 # define NONBLOCK_FLAG O_NONBLOCK
1029 #elif defined SYSV
1030 # define NONBLOCK_FLAG O_NDELAY
1031 #else
1032 # define NONBLOCK_FLAG FNDELAY
1033 #endif
1034
1035 #ifndef INADDR_LOOPBACK
1036 #define INADDR_LOOPBACK 0x7f000001
1037 #endif
1038
1039 #ifndef INADDR_NONE
1040 #define INADDR_NONE 0xffffffff
1041 #endif
1042
1043 #define IS_SPECIAL(mode) (S_ISSOCK(mode) || S_ISFIFO(mode))
1044 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode))
1045
1046 /* Initial mask on permissions given to temporary files.  Mask off setuid
1047      bits and group access because of potential race-condition security
1048      holes, and mask other access because mode 707 is bizarre */
1049 #define INITACCESSPERMS 0700
1050
1051 /* handler for null strings in printf format */
1052 #define NS(s) ((s)?(s):"<NULL>")
1053
1054 /* Convenient wrappers for malloc and realloc.  Use them. */
1055 #define new(type) ((type*)malloc(sizeof (type)))
1056 #define new0(type) ((type*)calloc(1, sizeof (type)))
1057 #define new_array(type, num) ((type*)_new_array((num), sizeof (type), 0))
1058 #define new_array0(type, num) ((type*)_new_array((num), sizeof (type), 1))
1059 #define realloc_array(ptr, type, num) ((type*)_realloc_array((ptr), sizeof(type), (num)))
1060
1061 /* use magic gcc attributes to catch format errors */
1062  void rprintf(enum logcode , const char *, ...)
1063      __attribute__((format (printf, 2, 3)))
1064 ;
1065
1066 /* This is just like rprintf, but it also tries to print some
1067  * representation of the error code.  Normally errcode = errno. */
1068 void rsyserr(enum logcode, int, const char *, ...)
1069      __attribute__((format (printf, 3, 4)))
1070      ;
1071
1072 /* Make sure that the O_BINARY flag is defined. */
1073 #ifndef O_BINARY
1074 #define O_BINARY 0
1075 #endif
1076
1077 #ifndef HAVE_STRLCPY
1078 size_t strlcpy(char *d, const char *s, size_t bufsize);
1079 #endif
1080
1081 #ifndef HAVE_STRLCAT
1082 size_t strlcat(char *d, const char *s, size_t bufsize);
1083 #endif
1084
1085 #ifndef WEXITSTATUS
1086 #define WEXITSTATUS(stat)       ((int)(((stat)>>8)&0xFF))
1087 #endif
1088 #ifndef WIFEXITED
1089 #define WIFEXITED(stat)         ((int)((stat)&0xFF) == 0)
1090 #endif
1091
1092 #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
1093
1094 #ifdef HAVE_GETEUID
1095 #define MY_UID() geteuid()
1096 #else
1097 #define MY_UID() getuid()
1098 #endif
1099
1100 #ifdef HAVE_GETEGID
1101 #define MY_GID() getegid()
1102 #else
1103 #define MY_GID() getgid()
1104 #endif
1105
1106 extern int verbose;
1107
1108 #ifndef HAVE_INET_NTOP
1109 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
1110 #endif
1111
1112 #ifndef HAVE_INET_PTON
1113 int inet_pton(int af, const char *src, void *dst);
1114 #endif
1115
1116 #ifdef MAINTAINER_MODE
1117 const char *get_panic_action(void);
1118 #endif