rsync.h

   1 /*
   2    Copyright (C) by Andrew Tridgell 1996, 2000
   3    Copyright (C) Paul Mackerras 1996
   4    Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21
  22 #define False 0
  23 #define True 1
  24
  25 #define BLOCK_SIZE 700
  26 #define RSYNC_RSH_ENV "RSYNC_RSH"
  27 #define RSYNC_RSH_IO_ENV "RSYNC_RSH_IO"
  28
  29 #define RSYNC_NAME "rsync"
  30 /* RSYNCD_SYSCONF is now set in config.h */
  31 #define RSYNCD_USERCONF "rsyncd.conf"
  32
  33 #define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
  34 #define URL_PREFIX "rsync://"
  35
  36 #define BACKUP_SUFFIX "~"
  37
  38 /* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
  39    incompatible with older versions :-( */
  40 #define CHAR_OFFSET 0
  41
  42 /* These flags are only used during the flist transfer. */
  43
  44 #define XMIT_TOP_DIR (1<<0)
  45 #define XMIT_SAME_MODE (1<<1)
  46 #define XMIT_EXTENDED_FLAGS (1<<2)
  47 #define XMIT_SAME_RDEV_pre28 XMIT_EXTENDED_FLAGS /* Only in protocols < 28 */
  48 #define XMIT_SAME_UID (1<<3)
  49 #define XMIT_SAME_GID (1<<4)
  50 #define XMIT_SAME_NAME (1<<5)
  51 #define XMIT_LONG_NAME (1<<6)
  52 #define XMIT_SAME_TIME (1<<7)
  53 #define XMIT_SAME_RDEV_MAJOR (1<<8)
  54 #define XMIT_HAS_IDEV_DATA (1<<9)
  55 #define XMIT_SAME_DEV (1<<10)
  56 #define XMIT_RDEV_MINOR_IS_SMALL (1<<11)
  57
  58 /* These flags are used in the live flist data. */
  59
  60 #define FLAG_TOP_DIR (1<<0)
  61 #define FLAG_HLINK_EOL (1<<1)   /* receiver/generator */
  62 #define FLAG_MOUNT_POINT (1<<2) /* sender */
  63 #define FLAG_NO_FUZZY (1<<2)    /* generator */
  64 #define FLAG_DEL_HERE (1<<3)    /* receiver/generator */
  65 #define FLAG_SENT (1<<3)        /* sender */
  66 #define FLAG_HLINK_TOL (1<<4)   /* receiver/generator */
  67
  68 /* update this if you make incompatible changes */
  69 #define PROTOCOL_VERSION 29
  70
  71 /* We refuse to interoperate with versions that are not in this range.
  72  * Note that we assume we'll work with later versions: the onus is on
  73  * people writing them to make sure that they don't send us anything
  74  * we won't understand.
  75  *
  76  * Interoperation with old but supported protocol versions
  77  * should cause a warning to be printed.  At a future date
  78  * the old protocol will become the minimum and
  79  * compatibility code removed.
  80  *
  81  * There are two possible explanations for the limit at
  82  * MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
  83  * do not interoperate with us, and (more likely) so that we can
  84  * detect an attempt to connect rsync to a non-rsync server, which is
  85  * unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
  86  * MAX_PROTOCOL_VERSION. */
  87
  88 #define MIN_PROTOCOL_VERSION 20
  89 #define OLD_PROTOCOL_VERSION 25
  90 #define MAX_PROTOCOL_VERSION 40
  91
  92 #define RSYNC_PORT 873
  93
  94 #define SPARSE_WRITE_SIZE (1024)
  95 #define WRITE_SIZE (32*1024)
  96 #define CHUNK_SIZE (32*1024)
  97 #define MAX_MAP_SIZE (256*1024)
  98 #define IO_BUFFER_SIZE (4092)
  99 #define MAX_BLOCK_SIZE ((int32)1 << 29)
 100
 101 #define IOERR_GENERAL   (1<<0) /* For backward compatibility, this must == 1 */
 102 #define IOERR_VANISHED  (1<<1)
 103 #define IOERR_DEL_LIMIT (1<<2)
 104
 105 #define MAX_ARGS 1000
 106 #define MAX_BASIS_DIRS 20
 107 #define MAX_SERVER_ARGS (MAX_BASIS_DIRS*2 + 100)
 108
 109 #define MPLEX_BASE 7
 110
 111 #define NO_FILTERS      0
 112 #define SERVER_FILTERS  1
 113 #define ALL_FILTERS     2
 114
 115 #define XFLG_FATAL_ERRORS       (1<<0)
 116 #define XFLG_OLD_PREFIXES       (1<<1)
 117 #define XFLG_ANCHORED2ABS       (1<<2)
 118
 119 #define PERMS_REPORT            (1<<0)
 120 #define PERMS_SKIP_MTIME        (1<<1)
 121
 122 #define FULL_FLUSH      1
 123 #define NORMAL_FLUSH    0
 124
 125 #define PDIR_CREATE     1
 126 #define PDIR_DELETE     0
 127
 128 /* Note: 0x00 - 0x7F are used for basis_dir[] indexes! */
 129 #define FNAMECMP_BASIS_DIR_LOW  0x00 /* Must remain 0! */
 130 #define FNAMECMP_BASIS_DIR_HIGH 0x7F
 131 #define FNAMECMP_FNAME          0x80
 132 #define FNAMECMP_PARTIAL_DIR    0x81
 133 #define FNAMECMP_BACKUP         0x82
 134 #define FNAMECMP_FUZZY          0x83
 135
 136 /* For calling delete_file() */
 137 #define DEL_NO_RECURSE          (1<<1)
 138 #define DEL_FORCE_RECURSE       (1<<2) /* recurse even w/o --force */
 139 #define DEL_TERSE               (1<<3)
 140
 141 /* For use by the itemize_changes code */
 142 #define ITEM_REPORT_CHECKSUM (1<<1)
 143 #define ITEM_REPORT_SIZE (1<<2)
 144 #define ITEM_REPORT_TIME (1<<3)
 145 #define ITEM_REPORT_PERMS (1<<4)
 146 #define ITEM_REPORT_OWNER (1<<5)
 147 #define ITEM_REPORT_GROUP (1<<6)
 148 #define ITEM_REPORT_XATTRS (1<<7)
 149 #define ITEM_BASIS_TYPE_FOLLOWS (1<<11)
 150 #define ITEM_XNAME_FOLLOWS (1<<12)
 151 #define ITEM_IS_NEW (1<<13)
 152 #define ITEM_LOCAL_CHANGE (1<<14)
 153 #define ITEM_TRANSFER (1<<15)
 154 /* These are outside the range of the transmitted flags. */
 155 #define ITEM_NO_DEST_AND_NO_UPDATE (1<<16) /* used by itemize() */
 156 #define ITEM_MISSING_DATA (1<<16)          /* used by log_formatted() */
 157 #define ITEM_DELETED (1<<17)               /* used by log_formatted() */
 158
 159 #define SIGNIFICANT_ITEM_FLAGS (~(\
 160         ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE))
 161
 162
 163 /* Log-message categories.  FLOG and FCLIENT are only used on the daemon
 164  * side for custom logging -- they don't get sent over the socket. */
 165 enum logcode { FERROR=1, FINFO=2, FLOG=3, FCLIENT=4 };
 166
 167 /* Messages types that are sent over the message channel.  The logcode
 168  * values must all be present here with identical numbers. */
 169 enum msgcode {
 170         MSG_DATA=0,     /* raw data on the multiplexed stream */
 171         MSG_ERROR=FERROR, MSG_INFO=FINFO, /* remote logging */
 172         MSG_LOG=FLOG, MSG_FCLIENT=FCLIENT, /* sibling logging */
 173         MSG_REDO=9,     /* reprocess indicated flist index */
 174         MSG_SUCCESS=100,/* successfully updated indicated flist index */
 175         MSG_DELETED=101,/* successfully deleted a file on receiving side */
 176         MSG_DONE=86     /* current phase is done */
 177 };
 178
 179 #include "errcode.h"
 180
 181 #include "config.h"
 182
 183 /* The default RSYNC_RSH is always set in config.h. */
 184
 185 #include <stdio.h>
 186 #ifdef HAVE_SYS_TYPES_H
 187 # include <sys/types.h>
 188 #endif
 189 #ifdef HAVE_SYS_STAT_H
 190 # include <sys/stat.h>
 191 #endif
 192 #ifdef STDC_HEADERS
 193 # include <stdlib.h>
 194 # include <stddef.h>
 195 #else
 196 # ifdef HAVE_STDLIB_H
 197 #  include <stdlib.h>
 198 # endif
 199 #endif
 200 #ifdef HAVE_STRING_H
 201 # if !defined STDC_HEADERS && defined HAVE_MEMORY_H
 202 #  include <memory.h>
 203 # endif
 204 # include <string.h>
 205 #endif
 206 #ifdef HAVE_STRINGS_H
 207 # include <strings.h>
 208 #endif
 209 #ifdef HAVE_UNISTD_H
 210 # include <unistd.h>
 211 #endif
 212
 213 #ifdef HAVE_SYS_PARAM_H
 214 #include <sys/param.h>
 215 #endif
 216
 217 #if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H)
 218 #include <malloc.h>
 219 #endif
 220
 221 #ifdef HAVE_SYS_SOCKET_H
 222 #include <sys/socket.h>
 223 #endif
 224
 225 #ifdef TIME_WITH_SYS_TIME
 226 #include <sys/time.h>
 227 #include <time.h>
 228 #else
 229 #ifdef HAVE_SYS_TIME_H
 230 #include <sys/time.h>
 231 #else
 232 #include <time.h>
 233 #endif
 234 #endif
 235
 236 #ifdef HAVE_FCNTL_H
 237 #include <fcntl.h>
 238 #else
 239 #ifdef HAVE_SYS_FCNTL_H
 240 #include <sys/fcntl.h>
 241 #endif
 242 #endif
 243
 244 #ifdef HAVE_SYS_IOCTL_H
 245 #include <sys/ioctl.h>
 246 #endif
 247
 248 #ifdef HAVE_SYS_FILIO_H
 249 #include <sys/filio.h>
 250 #endif
 251
 252 #include <signal.h>
 253 #ifdef HAVE_SYS_WAIT_H
 254 #include <sys/wait.h>
 255 #endif
 256 #ifdef HAVE_CTYPE_H
 257 #include <ctype.h>
 258 #endif
 259 #ifdef HAVE_GRP_H
 260 #include <grp.h>
 261 #endif
 262 #include <errno.h>
 263
 264 #ifdef HAVE_UTIME_H
 265 #include <utime.h>
 266 #endif
 267
 268 #ifdef HAVE_SYS_SELECT_H
 269 #include <sys/select.h>
 270 #endif
 271
 272 #ifdef HAVE_SYS_MODE_H
 273 /* apparently AIX needs this for S_ISLNK */
 274 #ifndef S_ISLNK
 275 #include <sys/mode.h>
 276 #endif
 277 #endif
 278
 279 #ifdef HAVE_GLOB_H
 280 #include <glob.h>
 281 #endif
 282
 283 /* these are needed for the uid/gid mapping code */
 284 #include <pwd.h>
 285 #include <grp.h>
 286
 287 #include <stdarg.h>
 288 #include <netinet/in.h>
 289 #include <arpa/inet.h>
 290 #include <netdb.h>
 291 #include <syslog.h>
 292 #include <sys/file.h>
 293
 294 #ifdef HAVE_DIRENT_H
 295 # include <dirent.h>
 296 #else
 297 # define dirent direct
 298 # ifdef HAVE_SYS_NDIR_H
 299 #  include <sys/ndir.h>
 300 # endif
 301 # ifdef HAVE_SYS_DIR_H
 302 #  include <sys/dir.h>
 303 # endif
 304 # ifdef HAVE_NDIR_H
 305 #  include <ndir.h>
 306 # endif
 307 #endif
 308
 309 #ifdef MAJOR_IN_MKDEV
 310 #include <sys/mkdev.h>
 311 # if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
 312 #  define makedev mkdev
 313 # endif
 314 #elif defined MAJOR_IN_SYSMACROS
 315 #include <sys/sysmacros.h>
 316 #endif
 317
 318 #ifdef HAVE_COMPAT_H
 319 #include <compat.h>
 320 #endif
 321
 322 #include <assert.h>
 323
 324 #include "lib/pool_alloc.h"
 325
 326 #define BOOL int
 327
 328 #ifndef uchar
 329 #define uchar unsigned char
 330 #endif
 331
 332 #ifdef SIGNED_CHAR_OK
 333 #define schar signed char
 334 #else
 335 #define schar char
 336 #endif
 337
 338 /* Find a variable that is either exactly 32-bits or longer.
 339  * If some code depends on 32-bit truncation, it will need to
 340  * take special action in a "#if SIZEOF_INT32 > 4" section. */
 341 #ifndef int32
 342 #if SIZEOF_INT == 4
 343 # define int32 int
 344 # define SIZEOF_INT32 4
 345 #elif SIZEOF_LONG == 4
 346 # define int32 long
 347 # define SIZEOF_INT32 4
 348 #elif SIZEOF_SHORT == 4
 349 # define int32 short
 350 # define SIZEOF_INT32 4
 351 #elif SIZEOF_INT > 4
 352 # define int32 int
 353 # define SIZEOF_INT32 SIZEOF_INT
 354 #elif SIZEOF_LONG > 4
 355 # define int32 long
 356 # define SIZEOF_INT32 SIZEOF_LONG
 357 #else
 358 # error Could not find a 32-bit integer variable
 359 #endif
 360 #else
 361 # define SIZEOF_INT32 4
 362 #endif
 363
 364 #ifndef uint32
 365 #define uint32 unsigned int32
 366 #endif
 367
 368 #if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64
 369 #define OFF_T off_t
 370 #define STRUCT_STAT struct stat
 371 #else
 372 #define OFF_T off64_t
 373 #define STRUCT_STAT struct stat64
 374 #define USE_STAT64_FUNCS 1
 375 #endif
 376
 377 /* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF
 378  * that's the maximum size the file system can handle and there is no
 379  * 64-bit type available.  The rsync source must therefore take steps
 380  * to ensure that any code that really requires a 64-bit integer has
 381  * it (e.g. the checksum code uses two 32-bit integers for its 64-bit
 382  * counter). */
 383 #if SIZEOF_OFF64_T == 8
 384 # define int64 off64_t
 385 # define SIZEOF_INT64 8
 386 #elif SIZEOF_LONG == 8
 387 # define int64 long
 388 # define SIZEOF_INT64 8
 389 #elif SIZEOF_INT == 8
 390 # define int64 int
 391 # define SIZEOF_INT64 8
 392 #elif SIZEOF_LONG_LONG == 8
 393 # define int64 long long
 394 # define SIZEOF_INT64 8
 395 #elif SIZEOF_OFF_T == 8
 396 # define int64 off_t
 397 # define SIZEOF_INT64 8
 398 #elif SIZEOF_INT > 8
 399 # define int64 int
 400 # define SIZEOF_INT64 SIZEOF_INT
 401 #elif SIZEOF_LONG > 8
 402 # define int64 long
 403 # define SIZEOF_INT64 SIZEOF_LONG
 404 #elif SIZEOF_LONG_LONG > 8
 405 # define int64 long long
 406 # define SIZEOF_INT64 SIZEOF_LONG_LONG
 407 #else
 408 /* As long as it gets... */
 409 # define int64 off_t
 410 # define SIZEOF_INT64 SIZEOF_OFF_T
 411 #endif
 412
 413 /* Starting from protocol version 26, we always use 64-bit
 414  * ino_t and dev_t internally, even if this platform does not
 415  * allow files to have 64-bit inums.  That's because the
 416  * receiver needs to find duplicate (dev,ino) tuples to detect
 417  * hardlinks, and it might have files coming from a platform
 418  * that has 64-bit inums.
 419  *
 420  * The only exception is if we're on a platform with no 64-bit type at
 421  * all.
 422  *
 423  * Because we use read_longint() to get these off the wire, if you
 424  * transfer devices or hardlinks with dev or inum > 2**32 to a machine
 425  * with no 64-bit types then you will get an overflow error.  Probably
 426  * not many people have that combination of machines, and you can
 427  * avoid it by not preserving hardlinks or not transferring device
 428  * nodes.  It's not clear that any other behaviour is better.
 429  *
 430  * Note that if you transfer devices from a 64-bit-devt machine (say,
 431  * Solaris) to a 32-bit-devt machine (say, Linux-2.2/x86) then the
 432  * device numbers will be truncated.  But it's a kind of silly thing
 433  * to do anyhow.
 434  *
 435  * FIXME: I don't think the code in flist.c has ever worked on a system
 436  * where dev_t is a struct.
 437  */
 438
 439 struct idev {
 440         int64 inode;
 441         int64 dev;
 442 };
 443
 444 #ifndef MIN
 445 #define MIN(a,b) ((a)<(b)?(a):(b))
 446 #endif
 447
 448 #ifndef MAX
 449 #define MAX(a,b) ((a)>(b)?(a):(b))
 450 #endif
 451
 452 #ifndef MAXHOSTNAMELEN
 453 #define MAXHOSTNAMELEN 256
 454 #endif
 455
 456 /* the length of the md4 checksum */
 457 #define MD4_SUM_LENGTH 16
 458 #define SUM_LENGTH 16
 459 #define SHORT_SUM_LENGTH 2
 460 #define BLOCKSUM_BIAS 10
 461
 462 #ifndef MAXPATHLEN
 463 #define MAXPATHLEN 1024
 464 #endif
 465
 466 #ifndef NAME_MAX
 467 #define NAME_MAX 255
 468 #endif
 469
 470 #ifndef INADDR_NONE
 471 #define INADDR_NONE 0xffffffff
 472 #endif
 473
 474 #ifndef IN_LOOPBACKNET
 475 #define IN_LOOPBACKNET 127
 476 #endif
 477
 478 #define GID_NONE ((gid_t)-1)
 479
 480 #define HL_CHECK_MASTER 0
 481 #define HL_SKIP         1
 482
 483 struct hlink {
 484         int next;
 485         int hlindex;
 486 };
 487
 488 #define F_DEV   link_u.idev->dev
 489 #define F_INODE link_u.idev->inode
 490
 491 #define F_HLINDEX link_u.links->hlindex
 492 #define F_NEXT  link_u.links->next
 493
 494 struct file_struct {
 495         union {
 496                 dev_t rdev;     /* The device number, if this is a device */
 497                 char *sum;      /* Only a normal file can have a checksum */
 498                 char *link;     /* Points to symlink string, if a symlink */
 499         } u;
 500         OFF_T length;
 501         char *basename;         /* The current item's name (AKA filename) */
 502         char *dirname;          /* The directory info inside the transfer */
 503         union {
 504                 char *root;     /* Sender-side dir info outside transfer */
 505                 int depth;      /* Receiver-side directory depth info */
 506         } dir;
 507         union {
 508                 struct idev *idev;
 509                 struct hlink *links;
 510         } link_u;
 511         time_t modtime;
 512         uid_t uid;
 513         gid_t gid;
 514         mode_t mode;
 515         uchar flags;    /* this item MUST remain last */
 516 };
 517
 518 /*
 519  * Start the flist array at FLIST_START entries and grow it
 520  * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
 521  */
 522 #define FLIST_START     (32 * 1024)
 523 #define FLIST_LINEAR    (FLIST_START * 512)
 524
 525 /*
 526  * Extent size for allocation pools A minimum size of 128KB
 527  * is needed to mmap them so that freeing will release the
 528  * space to the OS.
 529  *
 530  * Larger sizes reduce leftover fragments and speed free calls
 531  * (when they happen) Smaller sizes increase the chance of
 532  * freed allocations freeing whole extents.
 533  */
 534 #define FILE_EXTENT     (256 * 1024)
 535 #define HLINK_EXTENT    (128 * 1024)
 536
 537 #define WITH_HLINK      1
 538 #define WITHOUT_HLINK   0
 539
 540 struct file_list {
 541         struct file_struct **files;
 542         alloc_pool_t file_pool;
 543         alloc_pool_t hlink_pool;
 544         int count;
 545         int malloced;
 546         int low, high;
 547 };
 548
 549 #define SUMFLG_SAME_OFFSET      (1<<0)
 550
 551 struct sum_buf {
 552         OFF_T offset;           /**< offset in file of this chunk */
 553         int32 len;              /**< length of chunk of file */
 554         uint32 sum1;            /**< simple checksum */
 555         short flags;            /**< flag bits */
 556         char sum2[SUM_LENGTH];  /**< checksum  */
 557 };
 558
 559 struct sum_struct {
 560         OFF_T flength;          /**< total file length */
 561         struct sum_buf *sums;   /**< points to info for each chunk */
 562         int32 count;            /**< how many chunks */
 563         int32 blength;          /**< block_length */
 564         int32 remainder;        /**< flength % block_length */
 565         int s2length;           /**< sum2_length */
 566 };
 567
 568 struct map_struct {
 569         OFF_T file_size;        /* File size (from stat)                */
 570         OFF_T p_offset;         /* Window start                         */
 571         OFF_T p_fd_offset;      /* offset of cursor in fd ala lseek     */
 572         char *p;                /* Window pointer                       */
 573         int32 p_size;           /* Largest window size we allocated     */
 574         int32 p_len;            /* Latest (rounded) window size         */
 575         int32 def_window_size;  /* Default window size                  */
 576         int fd;                 /* File Descriptor                      */
 577         int status;             /* first errno from read errors         */
 578 };
 579
 580 #define MATCHFLG_WILD           (1<<0) /* pattern has '*', '[', and/or '?' */
 581 #define MATCHFLG_WILD2          (1<<1) /* pattern has '**' */
 582 #define MATCHFLG_WILD2_PREFIX   (1<<2) /* pattern starts with '**' */
 583 #define MATCHFLG_ABS_PATH       (1<<3) /* path-match on absolute path */
 584 #define MATCHFLG_INCLUDE        (1<<4) /* this is an include, not an exclude */
 585 #define MATCHFLG_DIRECTORY      (1<<5) /* this matches only directories */
 586 #define MATCHFLG_CLEAR_LIST     (1<<6) /* this item is the "!" token */
 587 #define MATCHFLG_WORD_SPLIT     (1<<7) /* split rules on whitespace */
 588 #define MATCHFLG_NO_INHERIT     (1<<8) /* don't inherit these rules */
 589 #define MATCHFLG_NO_PREFIXES    (1<<9) /* parse no prefixes from patterns */
 590 #define MATCHFLG_MERGE_FILE     (1<<10)/* specifies a file to merge */
 591 #define MATCHFLG_PERDIR_MERGE   (1<<11)/* merge-file is searched per-dir */
 592 #define MATCHFLG_EXCLUDE_SELF   (1<<12)/* merge-file name should be excluded */
 593 #define MATCHFLG_FINISH_SETUP   (1<<13)/* per-dir merge file needs setup */
 594 #define MATCHFLG_NEGATE         (1<<14)/* rule matches when pattern does not */
 595 #define MATCHFLG_CVS_IGNORE     (1<<15)/* rule was -C or :C */
 596 #define MATCHFLG_SENDER_SIDE    (1<<16)/* rule applies to the sending side */
 597 #define MATCHFLG_RECEIVER_SIDE  (1<<17)/* rule applies to the receiving side */
 598
 599 #define MATCHFLGS_FROM_CONTAINER (MATCHFLG_ABS_PATH | MATCHFLG_INCLUDE \
 600                                 | MATCHFLG_DIRECTORY | MATCHFLG_SENDER_SIDE \
 601                                 | MATCHFLG_NEGATE | MATCHFLG_RECEIVER_SIDE)
 602
 603 struct filter_struct {
 604         struct filter_struct *next;
 605         char *pattern;
 606         uint32 match_flags;
 607         union {
 608                 int slash_cnt;
 609                 struct filter_list_struct *mergelist;
 610         } u;
 611 };
 612
 613 struct filter_list_struct {
 614         struct filter_struct *head;
 615         struct filter_struct *tail;
 616         char *debug_type;
 617 };
 618
 619 struct stats {
 620         int64 total_size;
 621         int64 total_transferred_size;
 622         int64 total_written;
 623         int64 total_read;
 624         int64 literal_data;
 625         int64 matched_data;
 626         int64 flist_buildtime;
 627         int64 flist_xfertime;
 628         int flist_size;
 629         int num_files;
 630         int num_transferred_files;
 631         int current_file_index;
 632 };
 633
 634
 635 #include "byteorder.h"
 636 #include "lib/mdfour.h"
 637 #include "lib/wildmatch.h"
 638 #include "lib/permstring.h"
 639 #include "lib/addrinfo.h"
 640
 641 #include "proto.h"
 642
 643 /* We have replacement versions of these if they're missing. */
 644 #ifndef HAVE_ASPRINTF
 645 int asprintf(char **ptr, const char *format, ...);
 646 #endif
 647
 648 #ifndef HAVE_VASPRINTF
 649 int vasprintf(char **ptr, const char *format, va_list ap);
 650 #endif
 651
 652 #if !defined HAVE_VSNPRINTF || !defined HAVE_C99_VSNPRINTF
 653 #define vsnprintf rsync_vsnprintf
 654 int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
 655 #endif
 656
 657 #if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF
 658 #define snprintf rsync_snprintf
 659 int snprintf(char *str,size_t count,const char *fmt,...);
 660 #endif
 661
 662
 663 #ifndef HAVE_STRERROR
 664 extern char *sys_errlist[];
 665 #define strerror(i) sys_errlist[i]
 666 #endif
 667
 668 #ifndef HAVE_STRCHR
 669 # define strchr                 index
 670 # define strrchr                rindex
 671 #endif
 672
 673 #ifndef HAVE_ERRNO_DECL
 674 extern int errno;
 675 #endif
 676
 677 #ifdef HAVE_READLINK
 678 #define SUPPORT_LINKS 1
 679 #endif
 680 #ifdef HAVE_LINK
 681 #define SUPPORT_HARD_LINKS 1
 682 #endif
 683
 684 #define SIGNAL_CAST (RETSIGTYPE (*)())
 685
 686 #ifndef EWOULDBLOCK
 687 #define EWOULDBLOCK EAGAIN
 688 #endif
 689
 690 #ifndef STDIN_FILENO
 691 #define STDIN_FILENO 0
 692 #endif
 693
 694 #ifndef STDOUT_FILENO
 695 #define STDOUT_FILENO 1
 696 #endif
 697
 698 #ifndef STDERR_FILENO
 699 #define STDERR_FILENO 2
 700 #endif
 701
 702 #ifndef S_IRUSR
 703 #define S_IRUSR 0400
 704 #endif
 705
 706 #ifndef S_IWUSR
 707 #define S_IWUSR 0200
 708 #endif
 709
 710 #ifndef ACCESSPERMS
 711 #define ACCESSPERMS 0777
 712 #endif
 713
 714 #ifndef S_ISVTX
 715 #define S_ISVTX 0
 716 #endif
 717
 718 #define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
 719
 720 #ifndef _S_IFMT
 721 #define _S_IFMT        0170000
 722 #endif
 723
 724 #ifndef _S_IFLNK
 725 #define _S_IFLNK  0120000
 726 #endif
 727
 728 #ifndef S_ISLNK
 729 #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
 730 #endif
 731
 732 #ifndef S_ISBLK
 733 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
 734 #endif
 735
 736 #ifndef S_ISCHR
 737 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
 738 #endif
 739
 740 #ifndef S_ISSOCK
 741 #ifdef _S_IFSOCK
 742 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
 743 #else
 744 #define S_ISSOCK(mode) (0)
 745 #endif
 746 #endif
 747
 748 #ifndef S_ISFIFO
 749 #ifdef _S_IFIFO
 750 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
 751 #else
 752 #define S_ISFIFO(mode) (0)
 753 #endif
 754 #endif
 755
 756 #ifndef S_ISDIR
 757 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
 758 #endif
 759
 760 #ifndef S_ISREG
 761 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
 762 #endif
 763
 764 /* work out what fcntl flag to use for non-blocking */
 765 #ifdef O_NONBLOCK
 766 # define NONBLOCK_FLAG O_NONBLOCK
 767 #elif defined SYSV
 768 # define NONBLOCK_FLAG O_NDELAY
 769 #else
 770 # define NONBLOCK_FLAG FNDELAY
 771 #endif
 772
 773 #ifndef INADDR_LOOPBACK
 774 #define INADDR_LOOPBACK 0x7f000001
 775 #endif
 776
 777 #ifndef INADDR_NONE
 778 #define INADDR_NONE 0xffffffff
 779 #endif
 780
 781 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) || S_ISFIFO(mode))
 782
 783 /* Initial mask on permissions given to temporary files.  Mask off setuid
 784      bits and group access because of potential race-condition security
 785      holes, and mask other access because mode 707 is bizarre */
 786 #define INITACCESSPERMS 0700
 787
 788 /* handler for null strings in printf format */
 789 #define NS(s) ((s)?safe_fname(s):"<NULL>")
 790
 791 #if !defined __GNUC__ || defined __APPLE__
 792 /* Apparently the OS X port of gcc gags on __attribute__.
 793  *
 794  * <http://www.opensource.apple.com/bugs/X/gcc/2512150.html> */
 795 #define __attribute__(x)
 796
 797 #endif
 798
 799 /* Convenient wrappers for malloc and realloc.  Use them. */
 800 #define new(type) ((type *)malloc(sizeof(type)))
 801 #define new_array(type, num) ((type *)_new_array(sizeof(type), (num)))
 802 #define realloc_array(ptr, type, num) ((type *)_realloc_array((ptr), sizeof(type), (num)))
 803
 804 /* use magic gcc attributes to catch format errors */
 805  void rprintf(enum logcode , const char *, ...)
 806      __attribute__((format (printf, 2, 3)))
 807 ;
 808
 809 /* This is just like rprintf, but it also tries to print some
 810  * representation of the error code.  Normally errcode = errno. */
 811 void rsyserr(enum logcode, int, const char *, ...)
 812      __attribute__((format (printf, 3, 4)))
 813      ;
 814
 815 #ifdef REPLACE_INET_NTOA
 816 #define inet_ntoa rep_inet_ntoa
 817 #endif
 818
 819 /* Make sure that the O_BINARY flag is defined. */
 820 #ifndef O_BINARY
 821 #define O_BINARY 0
 822 #endif
 823
 824 #ifndef HAVE_STRLCPY
 825 size_t strlcpy(char *d, const char *s, size_t bufsize);
 826 #endif
 827
 828 #ifndef HAVE_STRLCAT
 829 size_t strlcat(char *d, const char *s, size_t bufsize);
 830 #endif
 831
 832 #ifndef WEXITSTATUS
 833 #define WEXITSTATUS(stat)       ((int)(((stat)>>8)&0xFF))
 834 #endif
 835
 836 #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
 837
 838 #ifdef HAVE_GETEUID
 839 #define MY_UID() geteuid()
 840 #else
 841 #define MY_UID() getuid()
 842 #endif
 843
 844 #ifdef HAVE_GETEGID
 845 #define MY_GID() getegid()
 846 #else
 847 #define MY_GID() getgid()
 848 #endif
 849
 850 extern int verbose;
 851
 852 #ifndef HAVE_INET_NTOP
 853 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
 854 #endif
 855
 856 #ifndef HAVE_INET_PTON
 857 int inet_pton(int af, const char *src, void *dst);
 858 #endif
 859
 860 #ifdef MAINTAINER_MODE
 861 const char *get_panic_action(void);
 862 #endif
 863
 864 #define UNUSED(x) x __attribute__((__unused__))
 865
 866 extern const char *io_write_phase, *io_read_phase;