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) 2003-2008 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/"  /* This MUST have a trailing slash! */
  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 #define XMIT_IO_ERROR_ENDLIST (1<<12)   /* protocols 31*- now (w/XMIT_EXTENDED_FLAGS) (also protocol 30 w/'f' compat flag) */
  64 #define XMIT_MOD_NSEC (1<<13)           /* protocols 31 - now */
  65
  66 /* These flags are used in the live flist data. */
  67
  68 #define FLAG_TOP_DIR (1<<0)     /* sender/receiver/generator */
  69 #define FLAG_OWNED_BY_US (1<<0) /* generator: set by make_file() for aux flists only */
  70 #define FLAG_FILE_SENT (1<<1)   /* sender/receiver/generator */
  71 #define FLAG_DIR_CREATED (1<<1) /* generator */
  72 #define FLAG_CONTENT_DIR (1<<2) /* sender/receiver/generator */
  73 #define FLAG_MOUNT_DIR (1<<3)   /* sender/generator (dirs only) */
  74 #define FLAG_SKIP_HLINK (1<<3)  /* receiver/generator (w/FLAG_HLINKED) */
  75 #define FLAG_DUPLICATE (1<<4)   /* sender */
  76 #define FLAG_MISSING_DIR (1<<4) /* generator */
  77 #define FLAG_HLINKED (1<<5)     /* receiver/generator (checked on all types) */
  78 #define FLAG_HLINK_FIRST (1<<6) /* receiver/generator (w/FLAG_HLINKED) */
  79 #define FLAG_IMPLIED_DIR (1<<6) /* sender/receiver/generator (dirs only) */
  80 #define FLAG_HLINK_LAST (1<<7)  /* receiver/generator */
  81 #define FLAG_HLINK_DONE (1<<8)  /* receiver/generator (checked on all types) */
  82 #define FLAG_LENGTH64 (1<<9)    /* sender/receiver/generator */
  83 #define FLAG_SKIP_GROUP (1<<10) /* receiver/generator */
  84 #define FLAG_TIME_FAILED (1<<11)/* generator */
  85 #define FLAG_MOD_NSEC (1<<12)   /* sender/receiver/generator */
  86
  87 /* These flags are passed to functions but not stored. */
  88
  89 #define FLAG_DIVERT_DIRS (1<<16)   /* sender, but must be unique */
  90
  91 /* These flags are for get_dirlist(). */
  92 #define GDL_IGNORE_FILTER_RULES (1<<0)
  93
  94 /* Some helper macros for matching bits. */
  95 #define BITS_SET(val,bits) (((val) & (bits)) == (bits))
  96 #define BITS_SETnUNSET(val,onbits,offbits) (((val) & ((onbits)|(offbits))) == (onbits))
  97 #define BITS_EQUAL(b1,b2,mask) (((unsigned)(b1) & (unsigned)(mask)) \
  98                              == ((unsigned)(b2) & (unsigned)(mask)))
  99
 100 /* update this if you make incompatible changes */
 101 #define PROTOCOL_VERSION 31
 102
 103 /* This is used when working on a new protocol version in CVS, and should
 104  * be a new non-zero value for each CVS change that affects the protocol.
 105  * It must ALWAYS be 0 when the protocol goes final (and NEVER before)! */
 106 #define SUBPROTOCOL_VERSION 13
 107
 108 /* We refuse to interoperate with versions that are not in this range.
 109  * Note that we assume we'll work with later versions: the onus is on
 110  * people writing them to make sure that they don't send us anything
 111  * we won't understand.
 112  *
 113  * Interoperation with old but supported protocol versions
 114  * should cause a warning to be printed.  At a future date
 115  * the old protocol will become the minimum and
 116  * compatibility code removed.
 117  *
 118  * There are two possible explanations for the limit at
 119  * MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
 120  * do not interoperate with us, and (more likely) so that we can
 121  * detect an attempt to connect rsync to a non-rsync server, which is
 122  * unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
 123  * MAX_PROTOCOL_VERSION. */
 124
 125 #define MIN_PROTOCOL_VERSION 20
 126 #define OLD_PROTOCOL_VERSION 25
 127 #define MAX_PROTOCOL_VERSION 40
 128
 129 #define MIN_FILECNT_LOOKAHEAD 1000
 130 #define MAX_FILECNT_LOOKAHEAD 10000
 131
 132 #define RSYNC_PORT 873
 133
 134 #define SPARSE_WRITE_SIZE (1024)
 135 #define WRITE_SIZE (32*1024)
 136 #define CHUNK_SIZE (32*1024)
 137 #define MAX_MAP_SIZE (256*1024)
 138 #define IO_BUFFER_SIZE (32*1024)
 139 #define MAX_BLOCK_SIZE ((int32)1 << 17)
 140
 141 /* For compatibility with older rsyncs */
 142 #define OLD_MAX_BLOCK_SIZE ((int32)1 << 29)
 143
 144 #define ROUND_UP_1024(siz) ((siz) & (1024-1) ? ((siz) | (1024-1)) + 1 : (siz))
 145
 146 #define IOERR_GENERAL   (1<<0) /* For backward compatibility, this must == 1 */
 147 #define IOERR_VANISHED  (1<<1)
 148 #define IOERR_DEL_LIMIT (1<<2)
 149
 150 #define MAX_ARGS 1000
 151 #define MAX_BASIS_DIRS 20
 152 #define MAX_SERVER_ARGS (MAX_BASIS_DIRS*2 + 100)
 153
 154 #define MPLEX_BASE 7
 155
 156 #define NO_FILTERS      0
 157 #define SERVER_FILTERS  1
 158 #define ALL_FILTERS     2
 159
 160 #define XFLG_FATAL_ERRORS       (1<<0)
 161 #define XFLG_OLD_PREFIXES       (1<<1)
 162 #define XFLG_ANCHORED2ABS       (1<<2) /* leading slash indicates absolute */
 163 #define XFLG_ABS_IF_SLASH       (1<<3) /* leading or interior slash is absolute */
 164 #define XFLG_DIR2WILD3          (1<<4) /* dir/ match gets trailing *** added */
 165
 166 #define ATTRS_REPORT            (1<<0)
 167 #define ATTRS_SKIP_MTIME        (1<<1)
 168
 169 #define FULL_FLUSH      1
 170 #define NORMAL_FLUSH    0
 171
 172 #define PDIR_CREATE     1
 173 #define PDIR_DELETE     0
 174
 175 /* Note: 0x00 - 0x7F are used for basis_dir[] indexes! */
 176 #define FNAMECMP_BASIS_DIR_LOW  0x00 /* Must remain 0! */
 177 #define FNAMECMP_BASIS_DIR_HIGH 0x7F
 178 #define FNAMECMP_FNAME          0x80
 179 #define FNAMECMP_PARTIAL_DIR    0x81
 180 #define FNAMECMP_BACKUP         0x82
 181 #define FNAMECMP_FUZZY          0x83
 182
 183 /* For use by the itemize_changes code */
 184 #define ITEM_REPORT_ATIME (1<<0)
 185 #define ITEM_REPORT_CHANGE (1<<1)
 186 #define ITEM_REPORT_SIZE (1<<2)     /* regular files only */
 187 #define ITEM_REPORT_TIMEFAIL (1<<2) /* symlinks only */
 188 #define ITEM_REPORT_TIME (1<<3)
 189 #define ITEM_REPORT_PERMS (1<<4)
 190 #define ITEM_REPORT_OWNER (1<<5)
 191 #define ITEM_REPORT_GROUP (1<<6)
 192 #define ITEM_REPORT_ACL (1<<7)
 193 #define ITEM_REPORT_XATTR (1<<8)
 194 #define ITEM_BASIS_TYPE_FOLLOWS (1<<11)
 195 #define ITEM_XNAME_FOLLOWS (1<<12)
 196 #define ITEM_IS_NEW (1<<13)
 197 #define ITEM_LOCAL_CHANGE (1<<14)
 198 #define ITEM_TRANSFER (1<<15)
 199 /* These are outside the range of the transmitted flags. */
 200 #define ITEM_MISSING_DATA (1<<16)          /* used by log_formatted() */
 201 #define ITEM_DELETED (1<<17)               /* used by log_formatted() */
 202 #define ITEM_MATCHED (1<<18)               /* used by itemize() */
 203
 204 #define SIGNIFICANT_ITEM_FLAGS (~(\
 205         ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE))
 206
 207 #define CFN_KEEP_DOT_DIRS (1<<0)
 208 #define CFN_KEEP_TRAILING_SLASH (1<<1)
 209 #define CFN_DROP_TRAILING_DOT_DIR (1<<2)
 210 #define CFN_COLLAPSE_DOT_DOT_DIRS (1<<3)
 211
 212 #define SP_DEFAULT 0
 213 #define SP_KEEP_DOT_DIRS (1<<0)
 214
 215 #define CD_NORMAL 0
 216 #define CD_SKIP_CHDIR 1
 217
 218 /* Log-message categories.  FLOG only goes to the log file, not the client;
 219  * FCLIENT is the opposite. */
 220 enum logcode {
 221     FNONE=0, /* never sent */
 222     FERROR_XFER=1, FINFO=2, /* sent over socket for any protocol */
 223     FERROR=3, FWARNING=4, /* sent over socket for protocols >= 30 */
 224     FERROR_SOCKET=5, FLOG=6, /* only sent via receiver -> generator pipe */
 225     FERROR_UTF8=8, /* only sent via receiver -> generator pipe */
 226     FCLIENT=7 /* never transmitted (e.g. server converts to FINFO) */
 227 };
 228
 229 /* Messages types that are sent over the message channel.  The logcode
 230  * values must all be present here with identical numbers. */
 231 enum msgcode {
 232         MSG_DATA=0,     /* raw data on the multiplexed stream */
 233         MSG_ERROR_XFER=FERROR_XFER, MSG_INFO=FINFO, /* remote logging */
 234         MSG_ERROR=FERROR, MSG_WARNING=FWARNING, /* protocol-30 remote logging */
 235         MSG_ERROR_SOCKET=FERROR_SOCKET, /* sibling logging */
 236         MSG_ERROR_UTF8=FERROR_UTF8, /* sibling logging */
 237         MSG_LOG=FLOG, MSG_CLIENT=FCLIENT, /* sibling logging */
 238         MSG_REDO=9,     /* reprocess indicated flist index */
 239         MSG_STATS=10,   /* message has stats data for generator */
 240         MSG_IO_ERROR=22,/* the sending side had an I/O error */
 241         MSG_IO_TIMEOUT=33,/* tell client about a daemon's timeout value */
 242         MSG_NOOP=42,    /* a do-nothing message (legacy protocol-30 only) */
 243         MSG_ERROR_EXIT=86, /* synchronize an error exit (siblings and protocol >= 31) */
 244         MSG_SUCCESS=100,/* successfully updated indicated flist index */
 245         MSG_DELETED=101,/* successfully deleted a file on receiving side */
 246         MSG_NO_SEND=102,/* sender failed to open a file we wanted */
 247 };
 248
 249 #define NDX_DONE -1
 250 #define NDX_FLIST_EOF -2
 251 #define NDX_DEL_STATS -3
 252 #define NDX_FLIST_OFFSET -101
 253
 254 /* For calling delete_item() and delete_dir_contents(). */
 255 #define DEL_NO_UID_WRITE        (1<<0) /* file/dir has our uid w/o write perm */
 256 #define DEL_RECURSE             (1<<1) /* if dir, delete all contents */
 257 #define DEL_DIR_IS_EMPTY        (1<<2) /* internal delete_FUNCTIONS use only */
 258 #define DEL_FOR_FILE            (1<<3) /* making room for a replacement file */
 259 #define DEL_FOR_DIR             (1<<4) /* making room for a replacement dir */
 260 #define DEL_FOR_SYMLINK         (1<<5) /* making room for a replacement symlink */
 261 #define DEL_FOR_DEVICE          (1<<6) /* making room for a replacement device */
 262 #define DEL_FOR_SPECIAL         (1<<7) /* making room for a replacement special */
 263 #define DEL_FOR_BACKUP          (1<<8) /* the delete is for a backup operation */
 264
 265 #define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
 266
 267 enum delret {
 268         DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
 269 };
 270
 271 /* Defines for make_path() */
 272 #define MKP_DROP_NAME           (1<<0) /* drop trailing filename or trailing slash */
 273 #define MKP_SKIP_SLASH          (1<<1) /* skip one or more leading slashes */
 274
 275 /* Defines for maybe_send_keepalive() */
 276 #define MSK_ALLOW_FLUSH         (1<<0)
 277 #define MSK_ACTIVE_RECEIVER     (1<<1)
 278
 279 #include "errcode.h"
 280
 281 #include "config.h"
 282
 283 /* The default RSYNC_RSH is always set in config.h. */
 284
 285 #include <stdio.h>
 286 #ifdef HAVE_SYS_TYPES_H
 287 # include <sys/types.h>
 288 #endif
 289 #ifdef HAVE_SYS_STAT_H
 290 # include <sys/stat.h>
 291 #endif
 292 #ifdef STDC_HEADERS
 293 # include <stdlib.h>
 294 # include <stddef.h>
 295 #else
 296 # ifdef HAVE_STDLIB_H
 297 #  include <stdlib.h>
 298 # endif
 299 #endif
 300 #ifdef HAVE_STRING_H
 301 # if !defined STDC_HEADERS && defined HAVE_MEMORY_H
 302 #  include <memory.h>
 303 # endif
 304 # include <string.h>
 305 #endif
 306 #ifdef HAVE_STRINGS_H
 307 # include <strings.h>
 308 #endif
 309 #ifdef HAVE_INTTYPES_H
 310 # include <inttypes.h>
 311 #endif
 312 #ifdef HAVE_STDINT_H
 313 # include <stdint.h>
 314 #endif
 315 #ifdef HAVE_UNISTD_H
 316 # include <unistd.h>
 317 #endif
 318
 319 #ifdef HAVE_SYS_PARAM_H
 320 #include <sys/param.h>
 321 #endif
 322
 323 #if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H)
 324 #include <malloc.h>
 325 #endif
 326
 327 #ifdef HAVE_SYS_SOCKET_H
 328 #include <sys/socket.h>
 329 #endif
 330
 331 #ifdef TIME_WITH_SYS_TIME
 332 #include <sys/time.h>
 333 #include <time.h>
 334 #else
 335 #ifdef HAVE_SYS_TIME_H
 336 #include <sys/time.h>
 337 #else
 338 #include <time.h>
 339 #endif
 340 #endif
 341
 342 #ifdef HAVE_FCNTL_H
 343 #include <fcntl.h>
 344 #else
 345 #ifdef HAVE_SYS_FCNTL_H
 346 #include <sys/fcntl.h>
 347 #endif
 348 #endif
 349
 350 #ifdef HAVE_SYS_IOCTL_H
 351 #include <sys/ioctl.h>
 352 #endif
 353
 354 #ifdef HAVE_SYS_FILIO_H
 355 #include <sys/filio.h>
 356 #endif
 357
 358 #include <signal.h>
 359 #ifdef HAVE_SYS_WAIT_H
 360 #include <sys/wait.h>
 361 #endif
 362 #ifdef HAVE_CTYPE_H
 363 #include <ctype.h>
 364 #endif
 365 #ifdef HAVE_GRP_H
 366 #include <grp.h>
 367 #endif
 368 #include <errno.h>
 369
 370 #ifdef HAVE_UTIME_H
 371 #include <utime.h>
 372 #endif
 373
 374 #if defined HAVE_UTIMENSAT || defined HAVE_LUTIMES
 375 #define CAN_SET_SYMLINK_TIMES 1
 376 #endif
 377
 378 #if defined HAVE_LCHOWN || defined CHOWN_MODIFIES_SYMLINK
 379 #define CAN_CHOWN_SYMLINK 1
 380 #endif
 381
 382 #if defined HAVE_LCHMOD || defined HAVE_SETATTRLIST
 383 #define CAN_CHMOD_SYMLINK 1
 384 #endif
 385
 386 #ifdef HAVE_UTIMENSAT
 387 #ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
 388 #define ST_MTIME_NSEC st_mtim.tv_nsec
 389 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
 390 #define ST_MTIME_NSEC st_mtimensec
 391 #endif
 392 #endif
 393
 394 #ifdef HAVE_SYS_SELECT_H
 395 #include <sys/select.h>
 396 #endif
 397
 398 #ifdef HAVE_SYS_MODE_H
 399 /* apparently AIX needs this for S_ISLNK */
 400 #ifndef S_ISLNK
 401 #include <sys/mode.h>
 402 #endif
 403 #endif
 404
 405 /* these are needed for the uid/gid mapping code */
 406 #include <pwd.h>
 407 #include <grp.h>
 408
 409 #include <stdarg.h>
 410 #include <netinet/in.h>
 411 #include <arpa/inet.h>
 412 #ifdef HAVE_NETDB_H
 413 #include <netdb.h>
 414 #endif
 415 #include <syslog.h>
 416 #include <sys/file.h>
 417
 418 #ifdef HAVE_DIRENT_H
 419 # include <dirent.h>
 420 #else
 421 # define dirent direct
 422 # ifdef HAVE_SYS_NDIR_H
 423 #  include <sys/ndir.h>
 424 # endif
 425 # ifdef HAVE_SYS_DIR_H
 426 #  include <sys/dir.h>
 427 # endif
 428 # ifdef HAVE_NDIR_H
 429 #  include <ndir.h>
 430 # endif
 431 #endif
 432
 433 #ifdef MAJOR_IN_MKDEV
 434 #include <sys/mkdev.h>
 435 # if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
 436 #  define makedev mkdev
 437 # endif
 438 #elif defined MAJOR_IN_SYSMACROS
 439 #include <sys/sysmacros.h>
 440 #endif
 441
 442 #ifdef MAKEDEV_TAKES_3_ARGS
 443 #define MAKEDEV(devmajor,devminor) makedev(0,devmajor,devminor)
 444 #else
 445 #define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor)
 446 #endif
 447
 448 #ifdef HAVE_COMPAT_H
 449 #include <compat.h>
 450 #endif
 451
 452 #ifdef HAVE_LIMITS_H
 453 # include <limits.h>
 454 #endif
 455
 456 #if defined USE_ICONV_OPEN && defined HAVE_ICONV_H
 457 #include <iconv.h>
 458 #ifndef ICONV_CONST
 459 #define ICONV_CONST
 460 #endif
 461 #else
 462 #ifdef ICONV_CONST
 463 #undef ICONV_CONST
 464 #endif
 465 #ifdef ICONV_OPTION
 466 #undef ICONV_OPTION
 467 #endif
 468 #ifdef iconv_t
 469 #undef iconv_t
 470 #endif
 471 #define iconv_t int
 472 #endif
 473
 474 #include <assert.h>
 475
 476 #include "lib/pool_alloc.h"
 477
 478 #ifndef HAVE_ID_T
 479 typedef unsigned int id_t;
 480 #endif
 481 #ifndef HAVE_PID_T
 482 typedef int pid_t;
 483 #endif
 484 #ifndef HAVE_MODE_T
 485 typedef unsigned int mode_t;
 486 #endif
 487 #ifndef HAVE_OFF_T
 488 typedef long off_t;
 489 #undef SIZEOF_OFF_T
 490 #define SIZEOF_OFF_T SIZEOF_LONG
 491 #endif
 492 #ifndef HAVE_SIZE_T
 493 typedef unsigned int size_t;
 494 #endif
 495
 496 #define BOOL int
 497
 498 #ifndef uchar
 499 #define uchar unsigned char
 500 #endif
 501
 502 #ifdef SIGNED_CHAR_OK
 503 #define schar signed char
 504 #else
 505 #define schar char
 506 #endif
 507
 508 #ifndef int16
 509 #if SIZEOF_INT16_T == 2
 510 # define int16 int16_t
 511 #else
 512 # define int16 short
 513 #endif
 514 #endif
 515
 516 #ifndef uint16
 517 #if SIZEOF_UINT16_T == 2
 518 # define uint16 uint16_t
 519 #else
 520 # define uint16 unsigned int16
 521 #endif
 522 #endif
 523
 524 /* Find a variable that is either exactly 32-bits or longer.
 525  * If some code depends on 32-bit truncation, it will need to
 526  * take special action in a "#if SIZEOF_INT32 > 4" section. */
 527 #ifndef int32
 528 #if SIZEOF_INT32_T == 4
 529 # define int32 int32_t
 530 # define SIZEOF_INT32 4
 531 #elif SIZEOF_INT == 4
 532 # define int32 int
 533 # define SIZEOF_INT32 4
 534 #elif SIZEOF_LONG == 4
 535 # define int32 long
 536 # define SIZEOF_INT32 4
 537 #elif SIZEOF_SHORT == 4
 538 # define int32 short
 539 # define SIZEOF_INT32 4
 540 #elif SIZEOF_INT > 4
 541 # define int32 int
 542 # define SIZEOF_INT32 SIZEOF_INT
 543 #elif SIZEOF_LONG > 4
 544 # define int32 long
 545 # define SIZEOF_INT32 SIZEOF_LONG
 546 #else
 547 # error Could not find a 32-bit integer variable
 548 #endif
 549 #else
 550 # define SIZEOF_INT32 4
 551 #endif
 552
 553 #ifndef uint32
 554 #if SIZEOF_UINT32_T == 4
 555 # define uint32 uint32_t
 556 #else
 557 # define uint32 unsigned int32
 558 #endif
 559 #endif
 560
 561 #if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64
 562 #define OFF_T off_t
 563 #define STRUCT_STAT struct stat
 564 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF_T
 565 #else
 566 #define OFF_T off64_t
 567 #define STRUCT_STAT struct stat64
 568 #define USE_STAT64_FUNCS 1
 569 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF64_T
 570 #endif
 571
 572 /* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF
 573  * that's the maximum size the file system can handle and there is no
 574  * 64-bit type available.  The rsync source must therefore take steps
 575  * to ensure that any code that really requires a 64-bit integer has
 576  * it (e.g. the checksum code uses two 32-bit integers for its 64-bit
 577  * counter). */
 578 #if SIZEOF_INT64_T == 8
 579 # define int64 int64_t
 580 # define SIZEOF_INT64 8
 581 #elif SIZEOF_LONG == 8
 582 # define int64 long
 583 # define SIZEOF_INT64 8
 584 #elif SIZEOF_INT == 8
 585 # define int64 int
 586 # define SIZEOF_INT64 8
 587 #elif SIZEOF_LONG_LONG == 8
 588 # define int64 long long
 589 # define SIZEOF_INT64 8
 590 #elif SIZEOF_OFF64_T == 8
 591 # define int64 off64_t
 592 # define SIZEOF_INT64 8
 593 #elif SIZEOF_OFF_T == 8
 594 # define int64 off_t
 595 # define SIZEOF_INT64 8
 596 #elif SIZEOF_INT > 8
 597 # define int64 int
 598 # define SIZEOF_INT64 SIZEOF_INT
 599 #elif SIZEOF_LONG > 8
 600 # define int64 long
 601 # define SIZEOF_INT64 SIZEOF_LONG
 602 #elif SIZEOF_LONG_LONG > 8
 603 # define int64 long long
 604 # define SIZEOF_INT64 SIZEOF_LONG_LONG
 605 #else
 606 /* As long as it gets... */
 607 # define int64 off_t
 608 # define SIZEOF_INT64 SIZEOF_OFF_T
 609 #endif
 610
 611 struct hashtable {
 612         void *nodes;
 613         int32 size, entries;
 614         uint32 node_size;
 615         short key64;
 616 };
 617
 618 struct ht_int32_node {
 619         void *data;
 620         int32 key;
 621 };
 622
 623 struct ht_int64_node {
 624         void *data;
 625         int64 key;
 626 };
 627
 628 #define HT_NODE(tbl, bkts, i) ((void*)((char*)(bkts) + (i)*(tbl)->node_size))
 629 #define HT_KEY(node, k64) ((k64)? ((struct ht_int64_node*)(node))->key \
 630                          : (int64)((struct ht_int32_node*)(node))->key)
 631
 632 #ifndef MIN
 633 #define MIN(a,b) ((a)<(b)?(a):(b))
 634 #endif
 635
 636 #ifndef MAX
 637 #define MAX(a,b) ((a)>(b)?(a):(b))
 638 #endif
 639
 640 #ifndef MAXHOSTNAMELEN
 641 #define MAXHOSTNAMELEN 256
 642 #endif
 643
 644 #define SUM_LENGTH 16
 645 #define SHORT_SUM_LENGTH 2
 646 #define BLOCKSUM_BIAS 10
 647
 648 #ifndef MAXPATHLEN
 649 #define MAXPATHLEN 1024
 650 #endif
 651
 652 /* We want a roomy line buffer that can hold more than MAXPATHLEN,
 653  * and significantly more than an overly short MAXPATHLEN. */
 654 #if MAXPATHLEN < 4096
 655 #define BIGPATHBUFLEN (4096+1024)
 656 #else
 657 #define BIGPATHBUFLEN (MAXPATHLEN+1024)
 658 #endif
 659
 660 #ifndef NAME_MAX
 661 #define NAME_MAX 255
 662 #endif
 663
 664 #ifndef INADDR_NONE
 665 #define INADDR_NONE 0xffffffff
 666 #endif
 667
 668 #ifndef IN_LOOPBACKNET
 669 #define IN_LOOPBACKNET 127
 670 #endif
 671
 672 #if HAVE_UNIXWARE_ACLS|HAVE_SOLARIS_ACLS|HAVE_HPUX_ACLS
 673 #define ACLS_NEED_MASK 1
 674 #endif
 675
 676 #if defined HAVE_FALLOCATE || HAVE_SYS_FALLOCATE
 677 #ifdef HAVE_LINUX_FALLOC_H
 678 #include <linux/falloc.h>
 679 #endif
 680 #ifdef FALLOC_FL_KEEP_SIZE
 681 #define SUPPORT_PREALLOCATION 1
 682 #elif defined HAVE_FTRUNCATE
 683 #define SUPPORT_PREALLOCATION 1
 684 #define PREALLOCATE_NEEDS_TRUNCATE 1
 685 #endif
 686 #else /* !fallocate */
 687 #if defined HAVE_EFFICIENT_POSIX_FALLOCATE && defined HAVE_FTRUNCATE
 688 #define SUPPORT_PREALLOCATION 1
 689 #define PREALLOCATE_NEEDS_TRUNCATE 1
 690 #endif
 691 #endif
 692
 693 union file_extras {
 694         int32 num;
 695         uint32 unum;
 696 };
 697
 698 struct file_struct {
 699         const char *dirname;    /* The dir info inside the transfer */
 700         time_t modtime;         /* When the item was last modified */
 701         uint32 len32;           /* Lowest 32 bits of the file's length */
 702         uint16 mode;            /* The item's type and permissions */
 703         uint16 flags;           /* The FLAG_* bits for this item */
 704         const char basename[1]; /* The basename (AKA filename) follows */
 705 };
 706
 707 extern int file_extra_cnt;
 708 extern int inc_recurse;
 709 extern int uid_ndx;
 710 extern int gid_ndx;
 711 extern int acls_ndx;
 712 extern int xattrs_ndx;
 713
 714 #define FILE_STRUCT_LEN (offsetof(struct file_struct, basename))
 715 #define EXTRA_LEN (sizeof (union file_extras))
 716 #define PTR_EXTRA_CNT ((sizeof (char *) + EXTRA_LEN - 1) / EXTRA_LEN)
 717 #define DEV_EXTRA_CNT 2
 718 #define DIRNODE_EXTRA_CNT 3
 719 #define SUM_EXTRA_CNT ((MAX_DIGEST_LEN + EXTRA_LEN - 1) / EXTRA_LEN)
 720
 721 #define REQ_EXTRA(f,ndx) ((union file_extras*)(f) - (ndx))
 722 #define OPT_EXTRA(f,bump) ((union file_extras*)(f) - file_extra_cnt - 1 - (bump))
 723
 724 #define NSEC_BUMP(f) ((f)->flags & FLAG_MOD_NSEC ? 1 : 0)
 725 #define LEN64_BUMP(f) ((f)->flags & FLAG_LENGTH64 ? 1 : 0)
 726 #define START_BUMP(f) (NSEC_BUMP(f) + LEN64_BUMP(f))
 727 #define HLINK_BUMP(f) ((f)->flags & (FLAG_HLINKED|FLAG_HLINK_DONE) ? inc_recurse+1 : 0)
 728 #define ACL_BUMP(f) (acls_ndx ? 1 : 0)
 729
 730 /* The length applies to all items. */
 731 #if SIZEOF_INT64 < 8
 732 #define F_LENGTH(f) ((int64)(f)->len32)
 733 #else
 734 #define F_LENGTH(f) ((int64)(f)->len32 + ((f)->flags & FLAG_LENGTH64 \
 735                    ? (int64)OPT_EXTRA(f, NSEC_BUMP(f))->unum << 32 : 0))
 736 #endif
 737
 738 #define F_MOD_NSEC(f) ((f)->flags & FLAG_MOD_NSEC ? OPT_EXTRA(f, 0)->unum : 0)
 739
 740 /* If there is a symlink string, it is always right after the basename */
 741 #define F_SYMLINK(f) ((f)->basename + strlen((f)->basename) + 1)
 742
 743 /* The sending side always has this available: */
 744 #define F_PATHNAME(f) (*(const char**)REQ_EXTRA(f, PTR_EXTRA_CNT))
 745
 746 /* The receiving side always has this available: */
 747 #define F_DEPTH(f) REQ_EXTRA(f, 1)->num
 748
 749 /* When the associated option is on, all entries will have these present: */
 750 #define F_OWNER(f) REQ_EXTRA(f, uid_ndx)->unum
 751 #define F_GROUP(f) REQ_EXTRA(f, gid_ndx)->unum
 752 #define F_ACL(f) REQ_EXTRA(f, acls_ndx)->num
 753 #define F_XATTR(f) REQ_EXTRA(f, xattrs_ndx)->num
 754 #define F_NDX(f) REQ_EXTRA(f, unsort_ndx)->num
 755
 756 /* These items are per-entry optional: */
 757 #define F_HL_GNUM(f) OPT_EXTRA(f, START_BUMP(f))->num /* non-dirs */
 758 #define F_HL_PREV(f) OPT_EXTRA(f, START_BUMP(f)+inc_recurse)->num /* non-dirs */
 759 #define F_DIR_NODE_P(f) (&OPT_EXTRA(f, START_BUMP(f) \
 760                                 + DIRNODE_EXTRA_CNT - 1)->num) /* sender dirs */
 761 #define F_DIR_RELNAMES_P(f) (&OPT_EXTRA(f, START_BUMP(f) + DIRNODE_EXTRA_CNT \
 762                                 + PTR_EXTRA_CNT - 1)->num) /* sender dirs */
 763 #define F_DIR_DEFACL(f) OPT_EXTRA(f, START_BUMP(f))->unum /* receiver dirs */
 764 #define F_DIR_DEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + ACL_BUMP(f) \
 765                                 + DEV_EXTRA_CNT - 1)->unum) /* receiver dirs */
 766
 767 /* This optional item might follow an F_HL_*() item. */
 768 #define F_RDEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) + DEV_EXTRA_CNT - 1)->unum)
 769
 770 /* The sum is only present on regular files. */
 771 #define F_SUM(f) ((char*)OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) \
 772                                     + SUM_EXTRA_CNT - 1))
 773
 774 /* Some utility defines: */
 775 #define F_IS_ACTIVE(f) (f)->basename[0]
 776 #define F_IS_HLINKED(f) ((f)->flags & FLAG_HLINKED)
 777
 778 #define F_HLINK_NOT_FIRST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_FIRST)
 779 #define F_HLINK_NOT_LAST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_LAST)
 780
 781 /* These access the F_DIR_DEV_P() and F_RDEV_P() values: */
 782 #define DEV_MAJOR(a) (a)[0]
 783 #define DEV_MINOR(a) (a)[1]
 784
 785 /* These access the F_DIRS_NODE_P() values: */
 786 #define DIR_PARENT(a) (a)[0]
 787 #define DIR_FIRST_CHILD(a) (a)[1]
 788 #define DIR_NEXT_SIBLING(a) (a)[2]
 789
 790 /*
 791  * Start the flist array at FLIST_START entries and grow it
 792  * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
 793  */
 794 #define FLIST_START     (32 * 1024)
 795 #define FLIST_LINEAR    (FLIST_START * 512)
 796
 797 /*
 798  * Extent size for allocation pools: A minimum size of 128KB
 799  * is needed to mmap them so that freeing will release the
 800  * space to the OS.
 801  *
 802  * Larger sizes reduce leftover fragments and speed free calls
 803  * (when they happen). Smaller sizes increase the chance of
 804  * freed allocations freeing whole extents.
 805  */
 806 #define NORMAL_EXTENT   (256 * 1024)
 807 #define SMALL_EXTENT    (128 * 1024)
 808
 809 #define FLIST_TEMP      (1<<1)
 810
 811 struct file_list {
 812         struct file_list *next, *prev;
 813         struct file_struct **files, **sorted;
 814         alloc_pool_t file_pool;
 815         void *pool_boundary;
 816         int used, malloced;
 817         int low, high;  /* 0-relative index values excluding empties */
 818         int ndx_start;  /* the start offset for inc_recurse mode */
 819         int flist_num;  /* 1-relative file_list number or 0 */
 820         int parent_ndx; /* dir_flist index of parent directory */
 821         int in_progress, to_redo;
 822 };
 823
 824 #define SUMFLG_SAME_OFFSET      (1<<0)
 825
 826 struct sum_buf {
 827         OFF_T offset;           /**< offset in file of this chunk */
 828         int32 len;              /**< length of chunk of file */
 829         uint32 sum1;            /**< simple checksum */
 830         int32 chain;            /**< next hash-table collision */
 831         short flags;            /**< flag bits */
 832         char sum2[SUM_LENGTH];  /**< checksum  */
 833 };
 834
 835 struct sum_struct {
 836         OFF_T flength;          /**< total file length */
 837         struct sum_buf *sums;   /**< points to info for each chunk */
 838         int32 count;            /**< how many chunks */
 839         int32 blength;          /**< block_length */
 840         int32 remainder;        /**< flength % block_length */
 841         int s2length;           /**< sum2_length */
 842 };
 843
 844 struct map_struct {
 845         OFF_T file_size;        /* File size (from stat)                */
 846         OFF_T p_offset;         /* Window start                         */
 847         OFF_T p_fd_offset;      /* offset of cursor in fd ala lseek     */
 848         char *p;                /* Window pointer                       */
 849         int32 p_size;           /* Largest window size we allocated     */
 850         int32 p_len;            /* Latest (rounded) window size         */
 851         int32 def_window_size;  /* Default window size                  */
 852         int fd;                 /* File Descriptor                      */
 853         int status;             /* first errno from read errors         */
 854 };
 855
 856 #define FILTRULE_WILD           (1<<0) /* pattern has '*', '[', and/or '?' */
 857 #define FILTRULE_WILD2          (1<<1) /* pattern has '**' */
 858 #define FILTRULE_WILD2_PREFIX   (1<<2) /* pattern starts with "**" */
 859 #define FILTRULE_WILD3_SUFFIX   (1<<3) /* pattern ends with "***" */
 860 #define FILTRULE_ABS_PATH       (1<<4) /* path-match on absolute path */
 861 #define FILTRULE_INCLUDE        (1<<5) /* this is an include, not an exclude */
 862 #define FILTRULE_DIRECTORY      (1<<6) /* this matches only directories */
 863 #define FILTRULE_WORD_SPLIT     (1<<7) /* split rules on whitespace */
 864 #define FILTRULE_NO_INHERIT     (1<<8) /* don't inherit these rules */
 865 #define FILTRULE_NO_PREFIXES    (1<<9) /* parse no prefixes from patterns */
 866 #define FILTRULE_MERGE_FILE     (1<<10)/* specifies a file to merge */
 867 #define FILTRULE_PERDIR_MERGE   (1<<11)/* merge-file is searched per-dir */
 868 #define FILTRULE_EXCLUDE_SELF   (1<<12)/* merge-file name should be excluded */
 869 #define FILTRULE_FINISH_SETUP   (1<<13)/* per-dir merge file needs setup */
 870 #define FILTRULE_NEGATE         (1<<14)/* rule matches when pattern does not */
 871 #define FILTRULE_CVS_IGNORE     (1<<15)/* rule was -C or :C */
 872 #define FILTRULE_SENDER_SIDE    (1<<16)/* rule applies to the sending side */
 873 #define FILTRULE_RECEIVER_SIDE  (1<<17)/* rule applies to the receiving side */
 874 #define FILTRULE_CLEAR_LIST     (1<<18)/* this item is the "!" token */
 875 #define FILTRULE_PERISHABLE     (1<<19)/* perishable if parent dir goes away */
 876
 877 #define FILTRULES_SIDES (FILTRULE_SENDER_SIDE | FILTRULE_RECEIVER_SIDE)
 878
 879 typedef struct filter_struct {
 880         struct filter_struct *next;
 881         char *pattern;
 882         uint32 rflags;
 883         union {
 884                 int slash_cnt;
 885                 struct filter_list_struct *mergelist;
 886         } u;
 887 } filter_rule;
 888
 889 typedef struct filter_list_struct {
 890         filter_rule *head;
 891         filter_rule *tail;
 892         filter_rule *parent_dirscan_head;
 893         char *debug_type;
 894 } filter_rule_list;
 895
 896 struct stats {
 897         int64 total_size;
 898         int64 total_transferred_size;
 899         int64 total_written;
 900         int64 total_read;
 901         int64 literal_data;
 902         int64 matched_data;
 903         int64 flist_buildtime;
 904         int64 flist_xfertime;
 905         int64 flist_size;
 906         int num_files, num_dirs, num_symlinks, num_devices, num_specials;
 907         int created_files, created_dirs, created_symlinks, created_devices, created_specials;
 908         int deleted_files, deleted_dirs, deleted_symlinks, deleted_devices, deleted_specials;
 909         int xferred_files;
 910 };
 911
 912 struct chmod_mode_struct;
 913
 914 struct flist_ndx_item {
 915         struct flist_ndx_item *next;
 916         int ndx;
 917 };
 918
 919 typedef struct {
 920         struct flist_ndx_item *head, *tail;
 921 } flist_ndx_list;
 922
 923 #define EMPTY_ITEM_LIST {NULL, 0, 0}
 924
 925 typedef struct {
 926         void *items;
 927         size_t count;
 928         size_t malloced;
 929 } item_list;
 930
 931 #define EXPAND_ITEM_LIST(lp, type, incr) \
 932         (type*)expand_item_list(lp, sizeof (type), #type, incr)
 933
 934 #define EMPTY_XBUF {NULL, 0, 0, 0}
 935
 936 typedef struct {
 937         char *buf;
 938         size_t pos;  /* pos = read pos in the buf */
 939         size_t len;  /* len = chars following pos */
 940         size_t size; /* size = total space in buf */
 941 } xbuf;
 942
 943 #define INIT_XBUF(xb, str, ln, sz) (xb).buf = (str), (xb).len = (ln), (xb).size = (sz), (xb).pos = 0
 944 #define INIT_XBUF_STRLEN(xb, str) (xb).buf = (str), (xb).len = strlen((xb).buf), (xb).size = (size_t)-1, (xb).pos = 0
 945 /* This one is used to make an output xbuf based on a char[] buffer: */
 946 #define INIT_CONST_XBUF(xb, bf) (xb).buf = (bf), (xb).size = sizeof (bf), (xb).len = (xb).pos = 0
 947
 948 #define ICB_EXPAND_OUT (1<<0)
 949 #define ICB_INCLUDE_BAD (1<<1)
 950 #define ICB_INCLUDE_INCOMPLETE (1<<2)
 951 #define ICB_CIRCULAR_OUT (1<<3)
 952 #define ICB_INIT (1<<4)
 953
 954 #define IOBUF_KEEP_BUFS 0
 955 #define IOBUF_FREE_BUFS 1
 956
 957 #define MPLX_SWITCHING IOBUF_KEEP_BUFS
 958 #define MPLX_ALL_DONE IOBUF_FREE_BUFS
 959 #define MPLX_TO_BUFFERED 2
 960
 961 #define RL_EOL_NULLS (1<<0)
 962 #define RL_DUMP_COMMENTS (1<<1)
 963 #define RL_CONVERT (1<<2)
 964
 965 typedef struct {
 966         char name_type;
 967         char fname[1]; /* has variable size */
 968 } relnamecache;
 969
 970 #include "byteorder.h"
 971 #include "lib/mdigest.h"
 972 #include "lib/wildmatch.h"
 973 #include "lib/permstring.h"
 974 #include "lib/addrinfo.h"
 975
 976 #ifndef __GNUC__
 977 #define __attribute__(x)
 978 #else
 979 # if __GNUC__ <= 2
 980 # define NORETURN
 981 # endif
 982 #endif
 983
 984 #define UNUSED(x) x __attribute__((__unused__))
 985 #ifndef NORETURN
 986 #define NORETURN __attribute__((__noreturn__))
 987 #endif
 988
 989 typedef struct {
 990     STRUCT_STAT st;
 991 #ifdef SUPPORT_ACLS
 992     struct rsync_acl *acc_acl; /* access ACL */
 993     struct rsync_acl *def_acl; /* default ACL */
 994 #endif
 995 #ifdef SUPPORT_XATTRS
 996     item_list *xattr;
 997 #endif
 998 } stat_x;
 999
1000 #define ACL_READY(sx) ((sx).acc_acl != NULL)
1001 #define XATTR_READY(sx) ((sx).xattr != NULL)
1002
1003 #include "proto.h"
1004
1005 #ifndef SUPPORT_XATTRS
1006 #define x_stat(fn,fst,xst) do_stat(fn,fst)
1007 #define x_lstat(fn,fst,xst) do_lstat(fn,fst)
1008 #define x_fstat(fd,fst,xst) do_fstat(fd,fst)
1009 #endif
1010
1011 /* We have replacement versions of these if they're missing. */
1012 #ifndef HAVE_ASPRINTF
1013 int asprintf(char **ptr, const char *format, ...);
1014 #endif
1015
1016 #ifndef HAVE_VASPRINTF
1017 int vasprintf(char **ptr, const char *format, va_list ap);
1018 #endif
1019
1020 #if !defined HAVE_VSNPRINTF || !defined HAVE_C99_VSNPRINTF
1021 #define vsnprintf rsync_vsnprintf
1022 int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1023 #endif
1024
1025 #if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF
1026 #define snprintf rsync_snprintf
1027 int snprintf(char *str, size_t count, const char *fmt,...);
1028 #endif
1029
1030
1031 #ifndef HAVE_STRERROR
1032 extern char *sys_errlist[];
1033 #define strerror(i) sys_errlist[i]
1034 #endif
1035
1036 #ifndef HAVE_STRCHR
1037 # define strchr                 index
1038 # define strrchr                rindex
1039 #endif
1040
1041 #ifndef HAVE_ERRNO_DECL
1042 extern int errno;
1043 #endif
1044
1045 #ifdef HAVE_READLINK
1046 #define SUPPORT_LINKS 1
1047 #if !defined NO_SYMLINK_XATTRS && !defined NO_SYMLINK_USER_XATTRS
1048 #define do_readlink(path, buf, bufsiz) readlink(path, buf, bufsiz)
1049 #endif
1050 #endif
1051 #ifdef HAVE_LINK
1052 #define SUPPORT_HARD_LINKS 1
1053 #endif
1054
1055 #ifdef HAVE_SIGACTION
1056 #define SIGACTION(n,h) sigact.sa_handler=(h), sigaction((n),&sigact,NULL)
1057 #define signal(n,h) we_need_to_call_SIGACTION_not_signal(n,h)
1058 #else
1059 #define SIGACTION(n,h) signal(n,h)
1060 #endif
1061
1062 #ifndef EWOULDBLOCK
1063 #define EWOULDBLOCK EAGAIN
1064 #endif
1065
1066 #ifndef STDIN_FILENO
1067 #define STDIN_FILENO 0
1068 #endif
1069
1070 #ifndef STDOUT_FILENO
1071 #define STDOUT_FILENO 1
1072 #endif
1073
1074 #ifndef STDERR_FILENO
1075 #define STDERR_FILENO 2
1076 #endif
1077
1078 #ifndef S_IRUSR
1079 #define S_IRUSR 0400
1080 #endif
1081
1082 #ifndef S_IWUSR
1083 #define S_IWUSR 0200
1084 #endif
1085
1086 #ifndef ACCESSPERMS
1087 #define ACCESSPERMS 0777
1088 #endif
1089
1090 #ifndef S_ISVTX
1091 #define S_ISVTX 0
1092 #endif
1093
1094 #define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
1095
1096 #ifndef _S_IFMT
1097 #define _S_IFMT        0170000
1098 #endif
1099
1100 #ifndef _S_IFLNK
1101 #define _S_IFLNK  0120000
1102 #endif
1103
1104 #ifndef S_ISLNK
1105 #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
1106 #endif
1107
1108 #ifndef S_ISBLK
1109 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
1110 #endif
1111
1112 #ifndef S_ISCHR
1113 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
1114 #endif
1115
1116 #ifndef S_ISSOCK
1117 #ifdef _S_IFSOCK
1118 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
1119 #else
1120 #define S_ISSOCK(mode) (0)
1121 #endif
1122 #endif
1123
1124 #ifndef S_ISFIFO
1125 #ifdef _S_IFIFO
1126 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
1127 #else
1128 #define S_ISFIFO(mode) (0)
1129 #endif
1130 #endif
1131
1132 #ifndef S_ISDIR
1133 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
1134 #endif
1135
1136 #ifndef S_ISREG
1137 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
1138 #endif
1139
1140 /* work out what fcntl flag to use for non-blocking */
1141 #ifdef O_NONBLOCK
1142 # define NONBLOCK_FLAG O_NONBLOCK
1143 #elif defined SYSV
1144 # define NONBLOCK_FLAG O_NDELAY
1145 #else
1146 # define NONBLOCK_FLAG FNDELAY
1147 #endif
1148
1149 #ifndef INADDR_LOOPBACK
1150 #define INADDR_LOOPBACK 0x7f000001
1151 #endif
1152
1153 #ifndef INADDR_NONE
1154 #define INADDR_NONE 0xffffffff
1155 #endif
1156
1157 #define IS_SPECIAL(mode) (S_ISSOCK(mode) || S_ISFIFO(mode))
1158 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode))
1159
1160 #define PRESERVE_FILE_TIMES     (1<<0)
1161 #define PRESERVE_DIR_TIMES      (1<<1)
1162 #define PRESERVE_LINK_TIMES     (1<<2)
1163
1164 /* Initial mask on permissions given to temporary files.  Mask off setuid
1165      bits and group access because of potential race-condition security
1166      holes, and mask other access because mode 707 is bizarre */
1167 #define INITACCESSPERMS 0700
1168
1169 /* handler for null strings in printf format */
1170 #define NS(s) ((s)?(s):"<NULL>")
1171
1172 /* Convenient wrappers for malloc and realloc.  Use them. */
1173 #define new(type) ((type*)malloc(sizeof (type)))
1174 #define new0(type) ((type*)calloc(1, sizeof (type)))
1175 #define new_array(type, num) ((type*)_new_array((num), sizeof (type), 0))
1176 #define new_array0(type, num) ((type*)_new_array((num), sizeof (type), 1))
1177 #define realloc_array(ptr, type, num) ((type*)_realloc_array((ptr), sizeof(type), (num)))
1178
1179 /* use magic gcc attributes to catch format errors */
1180  void rprintf(enum logcode , const char *, ...)
1181      __attribute__((format (printf, 2, 3)))
1182 ;
1183
1184 /* This is just like rprintf, but it also tries to print some
1185  * representation of the error code.  Normally errcode = errno. */
1186 void rsyserr(enum logcode, int, const char *, ...)
1187      __attribute__((format (printf, 3, 4)))
1188      ;
1189
1190 /* Make sure that the O_BINARY flag is defined. */
1191 #ifndef O_BINARY
1192 #define O_BINARY 0
1193 #endif
1194
1195 #ifndef HAVE_STRLCPY
1196 size_t strlcpy(char *d, const char *s, size_t bufsize);
1197 #endif
1198
1199 #ifndef HAVE_STRLCAT
1200 size_t strlcat(char *d, const char *s, size_t bufsize);
1201 #endif
1202
1203 #ifndef WEXITSTATUS
1204 #define WEXITSTATUS(stat)       ((int)(((stat)>>8)&0xFF))
1205 #endif
1206 #ifndef WIFEXITED
1207 #define WIFEXITED(stat)         ((int)((stat)&0xFF) == 0)
1208 #endif
1209
1210 #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
1211
1212 #ifdef HAVE_GETEUID
1213 #define MY_UID() geteuid()
1214 #else
1215 #define MY_UID() getuid()
1216 #endif
1217
1218 #ifdef HAVE_GETEGID
1219 #define MY_GID() getegid()
1220 #else
1221 #define MY_GID() getgid()
1222 #endif
1223
1224 #ifdef FORCE_FD_ZERO_MEMSET
1225 #undef FD_ZERO
1226 #define FD_ZERO(fdsetp) memset(fdsetp, 0, sizeof (fd_set))
1227 #endif
1228
1229 extern short info_levels[], debug_levels[];
1230
1231 #define INFO_GTE(flag, lvl) (info_levels[INFO_##flag] >= (lvl))
1232 #define INFO_EQ(flag, lvl) (info_levels[INFO_##flag] == (lvl))
1233 #define DEBUG_GTE(flag, lvl) (debug_levels[DEBUG_##flag] >= (lvl))
1234 #define DEBUG_EQ(flag, lvl) (debug_levels[DEBUG_##flag] == (lvl))
1235
1236 #define INFO_BACKUP 0
1237 #define INFO_COPY (INFO_BACKUP+1)
1238 #define INFO_DEL (INFO_COPY+1)
1239 #define INFO_FLIST (INFO_DEL+1)
1240 #define INFO_MISC (INFO_FLIST+1)
1241 #define INFO_MOUNT (INFO_MISC+1)
1242 #define INFO_NAME (INFO_MOUNT+1)
1243 #define INFO_PROGRESS (INFO_NAME+1)
1244 #define INFO_REMOVE (INFO_PROGRESS+1)
1245 #define INFO_SKIP (INFO_REMOVE+1)
1246 #define INFO_STATS (INFO_SKIP+1)
1247 #define INFO_SYMSAFE (INFO_STATS+1)
1248
1249 #define COUNT_INFO (INFO_SYMSAFE+1)
1250
1251 #define DEBUG_ACL 0
1252 #define DEBUG_BACKUP (DEBUG_ACL+1)
1253 #define DEBUG_BIND (DEBUG_BACKUP+1)
1254 #define DEBUG_CHDIR (DEBUG_BIND+1)
1255 #define DEBUG_CONNECT (DEBUG_CHDIR+1)
1256 #define DEBUG_CMD (DEBUG_CONNECT+1)
1257 #define DEBUG_DEL (DEBUG_CMD+1)
1258 #define DEBUG_DELTASUM (DEBUG_DEL+1)
1259 #define DEBUG_DUP (DEBUG_DELTASUM+1)
1260 #define DEBUG_EXIT (DEBUG_DUP+1)
1261 #define DEBUG_FILTER (DEBUG_EXIT+1)
1262 #define DEBUG_FLIST (DEBUG_FILTER+1)
1263 #define DEBUG_FUZZY (DEBUG_FLIST+1)
1264 #define DEBUG_GENR (DEBUG_FUZZY+1)
1265 #define DEBUG_HASH (DEBUG_GENR+1)
1266 #define DEBUG_HLINK (DEBUG_HASH+1)
1267 #define DEBUG_ICONV (DEBUG_HLINK+1)
1268 #define DEBUG_IO (DEBUG_ICONV+1)
1269 #define DEBUG_OWN (DEBUG_IO+1)
1270 #define DEBUG_PROTO (DEBUG_OWN+1)
1271 #define DEBUG_RECV (DEBUG_PROTO+1)
1272 #define DEBUG_SEND (DEBUG_RECV+1)
1273 #define DEBUG_TIME (DEBUG_SEND+1)
1274
1275 #define COUNT_DEBUG (DEBUG_TIME+1)
1276
1277 #ifndef HAVE_INET_NTOP
1278 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
1279 #endif
1280
1281 #ifndef HAVE_INET_PTON
1282 int inet_pton(int af, const char *src, void *dst);
1283 #endif
1284
1285 #ifdef MAINTAINER_MODE
1286 const char *get_panic_action(void);
1287 #endif