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) 2003-2020 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
  56 #define XMIT_SAME_RDEV_MAJOR (1<<8)     /* protocols 28 - now (devices only) */
  57 #define XMIT_NO_CONTENT_DIR (1<<8)      /* protocols 30 - now (dirs only) */
  58 #define XMIT_HLINKED (1<<9)             /* protocols 28 - now (non-dirs) */
  59 #define XMIT_SAME_DEV_pre30 (1<<10)     /* protocols 28 - 29  */
  60 #define XMIT_USER_NAME_FOLLOWS (1<<10)  /* protocols 30 - now */
  61 #define XMIT_RDEV_MINOR_8_pre30 (1<<11) /* protocols 28 - 29  */
  62 #define XMIT_GROUP_NAME_FOLLOWS (1<<11) /* protocols 30 - now */
  63 #define XMIT_HLINK_FIRST (1<<12)        /* protocols 30 - now (HLINKED files only) */
  64 #define XMIT_IO_ERROR_ENDLIST (1<<12)   /* protocols 31*- now (w/XMIT_EXTENDED_FLAGS) (also protocol 30 w/'f' compat flag) */
  65 #define XMIT_MOD_NSEC (1<<13)           /* protocols 31 - now */
  66 #define XMIT_SAME_ATIME (1<<14)         /* any protocol - restricted by command-line option */
  67 #define XMIT_UNUSED_15 (1<<15)          /* unused flag bit */
  68
  69 /* The following XMIT flags require an rsync that uses a varint for the flag values */
  70
  71 #define XMIT_RESERVED_16 (1<<16)        /* reserved for future fileflags use */
  72 #define XMIT_RESERVED_17 (1<<17)        /* reserved for future crtimes use */
  73
  74 /* These flags are used in the live flist data. */
  75
  76 #define FLAG_TOP_DIR (1<<0)     /* sender/receiver/generator */
  77 #define FLAG_OWNED_BY_US (1<<0) /* generator: set by make_file() for aux flists only */
  78 #define FLAG_FILE_SENT (1<<1)   /* sender/receiver/generator */
  79 #define FLAG_DIR_CREATED (1<<1) /* generator */
  80 #define FLAG_CONTENT_DIR (1<<2) /* sender/receiver/generator */
  81 #define FLAG_MOUNT_DIR (1<<3)   /* sender/generator (dirs only) */
  82 #define FLAG_SKIP_HLINK (1<<3)  /* receiver/generator (w/FLAG_HLINKED) */
  83 #define FLAG_DUPLICATE (1<<4)   /* sender */
  84 #define FLAG_MISSING_DIR (1<<4) /* generator */
  85 #define FLAG_HLINKED (1<<5)     /* receiver/generator (checked on all types) */
  86 #define FLAG_HLINK_FIRST (1<<6) /* receiver/generator (w/FLAG_HLINKED) */
  87 #define FLAG_IMPLIED_DIR (1<<6) /* sender/receiver/generator (dirs only) */
  88 #define FLAG_HLINK_LAST (1<<7)  /* receiver/generator */
  89 #define FLAG_HLINK_DONE (1<<8)  /* receiver/generator (checked on all types) */
  90 #define FLAG_LENGTH64 (1<<9)    /* sender/receiver/generator */
  91 #define FLAG_SKIP_GROUP (1<<10) /* receiver/generator */
  92 #define FLAG_TIME_FAILED (1<<11)/* generator */
  93 #define FLAG_MOD_NSEC (1<<12)   /* sender/receiver/generator */
  94
  95 /* These flags are passed to functions but not stored. */
  96
  97 #define FLAG_DIVERT_DIRS (1<<16)   /* sender, but must be unique */
  98 #define FLAG_PERHAPS_DIR (1<<17)   /* generator */
  99
 100 /* These flags are for get_dirlist(). */
 101 #define GDL_IGNORE_FILTER_RULES (1<<0)
 102 #define GDL_PERHAPS_DIR (1<<1)
 103
 104 /* Some helper macros for matching bits. */
 105 #define BITS_SET(val,bits) (((val) & (bits)) == (bits))
 106 #define BITS_SETnUNSET(val,onbits,offbits) (((val) & ((onbits)|(offbits))) == (onbits))
 107 #define BITS_EQUAL(b1,b2,mask) (((unsigned)(b1) & (unsigned)(mask)) \
 108                              == ((unsigned)(b2) & (unsigned)(mask)))
 109
 110 /* update this if you make incompatible changes */
 111 #define PROTOCOL_VERSION 31
 112
 113 /* This is used when working on a new protocol version in CVS, and should
 114  * be a new non-zero value for each CVS change that affects the protocol.
 115  * It must ALWAYS be 0 when the protocol goes final (and NEVER before)! */
 116 #define SUBPROTOCOL_VERSION 0
 117
 118 /* We refuse to interoperate with versions that are not in this range.
 119  * Note that we assume we'll work with later versions: the onus is on
 120  * people writing them to make sure that they don't send us anything
 121  * we won't understand.
 122  *
 123  * Interoperation with old but supported protocol versions
 124  * should cause a warning to be printed.  At a future date
 125  * the old protocol will become the minimum and
 126  * compatibility code removed.
 127  *
 128  * There are two possible explanations for the limit at
 129  * MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
 130  * do not interoperate with us, and (more likely) so that we can
 131  * detect an attempt to connect rsync to a non-rsync server, which is
 132  * unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
 133  * MAX_PROTOCOL_VERSION. */
 134
 135 #define MIN_PROTOCOL_VERSION 20
 136 #define OLD_PROTOCOL_VERSION 25
 137 #define MAX_PROTOCOL_VERSION 40
 138
 139 #define MIN_FILECNT_LOOKAHEAD 1000
 140 #define MAX_FILECNT_LOOKAHEAD 10000
 141
 142 #define RSYNC_PORT 873
 143
 144 #define SPARSE_WRITE_SIZE (1024)
 145 #define WRITE_SIZE (32*1024)
 146 #define CHUNK_SIZE (32*1024)
 147 #define MAX_MAP_SIZE (256*1024)
 148 #define IO_BUFFER_SIZE (32*1024)
 149 #define MAX_BLOCK_SIZE ((int32)1 << 17)
 150
 151 /* For compatibility with older rsyncs */
 152 #define OLD_MAX_BLOCK_SIZE ((int32)1 << 29)
 153
 154 #define ROUND_UP_1024(siz) ((siz) & (1024-1) ? ((siz) | (1024-1)) + 1 : (siz))
 155
 156 #define IOERR_GENERAL   (1<<0) /* For backward compatibility, this must == 1 */
 157 #define IOERR_VANISHED  (1<<1)
 158 #define IOERR_DEL_LIMIT (1<<2)
 159
 160 #define MAX_ARGS 1000
 161 #define MAX_BASIS_DIRS 20
 162 #define MAX_SERVER_ARGS (MAX_BASIS_DIRS*2 + 100)
 163
 164 #define MPLEX_BASE 7
 165
 166 #define NO_FILTERS      0
 167 #define SERVER_FILTERS  1
 168 #define ALL_FILTERS     2
 169
 170 #define XFLG_FATAL_ERRORS       (1<<0)
 171 #define XFLG_OLD_PREFIXES       (1<<1)
 172 #define XFLG_ANCHORED2ABS       (1<<2) /* leading slash indicates absolute */
 173 #define XFLG_ABS_IF_SLASH       (1<<3) /* leading or interior slash is absolute */
 174 #define XFLG_DIR2WILD3          (1<<4) /* dir/ match gets trailing *** added */
 175
 176 #define ATTRS_REPORT            (1<<0)
 177 #define ATTRS_SKIP_MTIME        (1<<1)
 178 #define ATTRS_SET_NANO          (1<<2)
 179 #define ATTRS_SKIP_ATIME        (1<<3)
 180
 181 #define FULL_FLUSH      1
 182 #define NORMAL_FLUSH    0
 183
 184 #define PDIR_CREATE     1
 185 #define PDIR_DELETE     0
 186
 187 /* Note: 0x00 - 0x7F are used for basis_dir[] indexes! */
 188 #define FNAMECMP_BASIS_DIR_LOW  0x00 /* Must remain 0! */
 189 #define FNAMECMP_BASIS_DIR_HIGH 0x7F
 190 #define FNAMECMP_FNAME          0x80
 191 #define FNAMECMP_PARTIAL_DIR    0x81
 192 #define FNAMECMP_BACKUP         0x82
 193 #define FNAMECMP_FUZZY          0x83
 194
 195 /* For use by the itemize_changes code */
 196 #define ITEM_REPORT_ATIME (1<<0)
 197 #define ITEM_REPORT_CHANGE (1<<1)
 198 #define ITEM_REPORT_SIZE (1<<2)     /* regular files only */
 199 #define ITEM_REPORT_TIMEFAIL (1<<2) /* symlinks only */
 200 #define ITEM_REPORT_TIME (1<<3)
 201 #define ITEM_REPORT_PERMS (1<<4)
 202 #define ITEM_REPORT_OWNER (1<<5)
 203 #define ITEM_REPORT_GROUP (1<<6)
 204 #define ITEM_REPORT_ACL (1<<7)
 205 #define ITEM_REPORT_XATTR (1<<8)
 206 #define ITEM_BASIS_TYPE_FOLLOWS (1<<11)
 207 #define ITEM_XNAME_FOLLOWS (1<<12)
 208 #define ITEM_IS_NEW (1<<13)
 209 #define ITEM_LOCAL_CHANGE (1<<14)
 210 #define ITEM_TRANSFER (1<<15)
 211 /* These are outside the range of the transmitted flags. */
 212 #define ITEM_MISSING_DATA (1<<16)          /* used by log_formatted() */
 213 #define ITEM_DELETED (1<<17)               /* used by log_formatted() */
 214 #define ITEM_MATCHED (1<<18)               /* used by itemize() */
 215
 216 #define SIGNIFICANT_ITEM_FLAGS (~(\
 217         ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE))
 218
 219 #define CFN_KEEP_DOT_DIRS (1<<0)
 220 #define CFN_KEEP_TRAILING_SLASH (1<<1)
 221 #define CFN_DROP_TRAILING_DOT_DIR (1<<2)
 222 #define CFN_COLLAPSE_DOT_DOT_DIRS (1<<3)
 223 #define CFN_REFUSE_DOT_DOT_DIRS (1<<4)
 224
 225 #define SP_DEFAULT 0
 226 #define SP_KEEP_DOT_DIRS (1<<0)
 227
 228 #define CD_NORMAL 0
 229 #define CD_SKIP_CHDIR 1
 230
 231 /* Log-message categories.  FLOG only goes to the log file, not the client;
 232  * FCLIENT is the opposite. */
 233 enum logcode {
 234     FNONE=0, /* never sent */
 235     FERROR_XFER=1, FINFO=2, /* sent over socket for any protocol */
 236     FERROR=3, FWARNING=4, /* sent over socket for protocols >= 30 */
 237     FERROR_SOCKET=5, FLOG=6, /* only sent via receiver -> generator pipe */
 238     FERROR_UTF8=8, /* only sent via receiver -> generator pipe */
 239     FCLIENT=7 /* never transmitted (e.g. server converts to FINFO) */
 240 };
 241
 242 /* Messages types that are sent over the message channel.  The logcode
 243  * values must all be present here with identical numbers. */
 244 enum msgcode {
 245         MSG_DATA=0,     /* raw data on the multiplexed stream */
 246         MSG_ERROR_XFER=FERROR_XFER, MSG_INFO=FINFO, /* remote logging */
 247         MSG_ERROR=FERROR, MSG_WARNING=FWARNING, /* protocol-30 remote logging */
 248         MSG_ERROR_SOCKET=FERROR_SOCKET, /* sibling logging */
 249         MSG_ERROR_UTF8=FERROR_UTF8, /* sibling logging */
 250         MSG_LOG=FLOG, MSG_CLIENT=FCLIENT, /* sibling logging */
 251         MSG_REDO=9,     /* reprocess indicated flist index */
 252         MSG_STATS=10,   /* message has stats data for generator */
 253         MSG_IO_ERROR=22,/* the sending side had an I/O error */
 254         MSG_IO_TIMEOUT=33,/* tell client about a daemon's timeout value */
 255         MSG_NOOP=42,    /* a do-nothing message (legacy protocol-30 only) */
 256         MSG_ERROR_EXIT=86, /* synchronize an error exit (siblings and protocol >= 31) */
 257         MSG_SUCCESS=100,/* successfully updated indicated flist index */
 258         MSG_DELETED=101,/* successfully deleted a file on receiving side */
 259         MSG_NO_SEND=102,/* sender failed to open a file we wanted */
 260 };
 261
 262 #define NDX_DONE -1
 263 #define NDX_FLIST_EOF -2
 264 #define NDX_DEL_STATS -3
 265 #define NDX_FLIST_OFFSET -101
 266
 267 /* For calling delete_item() and delete_dir_contents(). */
 268 #define DEL_NO_UID_WRITE        (1<<0) /* file/dir has our uid w/o write perm */
 269 #define DEL_RECURSE             (1<<1) /* if dir, delete all contents */
 270 #define DEL_DIR_IS_EMPTY        (1<<2) /* internal delete_FUNCTIONS use only */
 271 #define DEL_FOR_FILE            (1<<3) /* making room for a replacement file */
 272 #define DEL_FOR_DIR             (1<<4) /* making room for a replacement dir */
 273 #define DEL_FOR_SYMLINK         (1<<5) /* making room for a replacement symlink */
 274 #define DEL_FOR_DEVICE          (1<<6) /* making room for a replacement device */
 275 #define DEL_FOR_SPECIAL         (1<<7) /* making room for a replacement special */
 276 #define DEL_FOR_BACKUP          (1<<8) /* the delete is for a backup operation */
 277
 278 #define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
 279
 280 enum delret {
 281         DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
 282 };
 283
 284 /* Defines for make_path() */
 285 #define MKP_DROP_NAME           (1<<0) /* drop trailing filename or trailing slash */
 286 #define MKP_SKIP_SLASH          (1<<1) /* skip one or more leading slashes */
 287
 288 /* Defines for maybe_send_keepalive() */
 289 #define MSK_ALLOW_FLUSH         (1<<0)
 290 #define MSK_ACTIVE_RECEIVER     (1<<1)
 291
 292 #include "errcode.h"
 293
 294 #include "config.h"
 295
 296 /* The default RSYNC_RSH is always set in config.h. */
 297
 298 #include <stdio.h>
 299 #ifdef HAVE_SYS_TYPES_H
 300 # include <sys/types.h>
 301 #endif
 302 #ifdef HAVE_SYS_STAT_H
 303 # include <sys/stat.h>
 304 #endif
 305 #ifdef STDC_HEADERS
 306 # include <stdlib.h>
 307 # include <stddef.h>
 308 #else
 309 # ifdef HAVE_STDLIB_H
 310 #  include <stdlib.h>
 311 # endif
 312 #endif
 313 #ifdef HAVE_STRING_H
 314 # if !defined STDC_HEADERS && defined HAVE_MEMORY_H
 315 #  include <memory.h>
 316 # endif
 317 # include <string.h>
 318 #endif
 319 #ifdef HAVE_STRINGS_H
 320 # include <strings.h>
 321 #endif
 322 #ifdef HAVE_INTTYPES_H
 323 # include <inttypes.h>
 324 #endif
 325 #ifdef HAVE_STDINT_H
 326 # include <stdint.h>
 327 #endif
 328 #ifdef HAVE_UNISTD_H
 329 # include <unistd.h>
 330 #endif
 331
 332 #ifdef HAVE_SYS_PARAM_H
 333 #include <sys/param.h>
 334 #endif
 335
 336 #if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H)
 337 #include <malloc.h>
 338 #endif
 339
 340 #ifdef HAVE_SYS_SOCKET_H
 341 #include <sys/socket.h>
 342 #endif
 343
 344 #ifdef TIME_WITH_SYS_TIME
 345 #include <sys/time.h>
 346 #include <time.h>
 347 #else
 348 #ifdef HAVE_SYS_TIME_H
 349 #include <sys/time.h>
 350 #else
 351 #include <time.h>
 352 #endif
 353 #endif
 354
 355 #ifdef HAVE_FCNTL_H
 356 #include <fcntl.h>
 357 #else
 358 #ifdef HAVE_SYS_FCNTL_H
 359 #include <sys/fcntl.h>
 360 #endif
 361 #endif
 362
 363 #ifdef HAVE_SYS_IOCTL_H
 364 #include <sys/ioctl.h>
 365 #endif
 366
 367 #ifdef HAVE_SYS_FILIO_H
 368 #include <sys/filio.h>
 369 #endif
 370
 371 #include <signal.h>
 372 #ifdef HAVE_SYS_WAIT_H
 373 #include <sys/wait.h>
 374 #endif
 375 #ifdef HAVE_CTYPE_H
 376 #include <ctype.h>
 377 #endif
 378 #ifdef HAVE_GRP_H
 379 #include <grp.h>
 380 #endif
 381 #include <errno.h>
 382
 383 #ifdef HAVE_UTIME_H
 384 #include <utime.h>
 385 #endif
 386
 387 #if defined HAVE_UTIMENSAT || defined HAVE_LUTIMES || defined HAVE_SETATTRLIST
 388 #define CAN_SET_SYMLINK_TIMES 1
 389 #endif
 390
 391 #if defined HAVE_LCHOWN || defined CHOWN_MODIFIES_SYMLINK
 392 #define CAN_CHOWN_SYMLINK 1
 393 #endif
 394
 395 #if defined HAVE_LCHMOD || defined HAVE_SETATTRLIST
 396 #define CAN_CHMOD_SYMLINK 1
 397 #endif
 398
 399 #if defined HAVE_UTIMENSAT || defined HAVE_SETATTRLIST
 400 #define CAN_SET_NSEC 1
 401 #endif
 402
 403 #ifdef CAN_SET_NSEC
 404 #ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
 405 #define ST_MTIME_NSEC st_mtim.tv_nsec
 406 #define ST_ATIME_NSEC st_atim.tv_nsec
 407 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
 408 #define ST_MTIME_NSEC st_mtimensec
 409 #define ST_ATIME_NSEC st_atimensec
 410 #elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
 411 #define ST_MTIME_NSEC st_mtimespec.tv_nsec
 412 #define ST_ATIME_NSEC st_atimespec.tv_nsec
 413 #endif
 414 #endif
 415
 416 #ifdef HAVE_SYS_SELECT_H
 417 #include <sys/select.h>
 418 #endif
 419
 420 #ifdef HAVE_SYS_MODE_H
 421 /* apparently AIX needs this for S_ISLNK */
 422 #ifndef S_ISLNK
 423 #include <sys/mode.h>
 424 #endif
 425 #endif
 426
 427 /* these are needed for the uid/gid mapping code */
 428 #include <pwd.h>
 429 #include <grp.h>
 430
 431 #include <stdarg.h>
 432 #include <netinet/in.h>
 433 #include <arpa/inet.h>
 434 #ifdef HAVE_NETDB_H
 435 #include <netdb.h>
 436 #endif
 437 #include <syslog.h>
 438 #include <sys/file.h>
 439
 440 #ifdef HAVE_DIRENT_H
 441 # include <dirent.h>
 442 #else
 443 # define dirent direct
 444 # ifdef HAVE_SYS_NDIR_H
 445 #  include <sys/ndir.h>
 446 # endif
 447 # ifdef HAVE_SYS_DIR_H
 448 #  include <sys/dir.h>
 449 # endif
 450 # ifdef HAVE_NDIR_H
 451 #  include <ndir.h>
 452 # endif
 453 #endif
 454
 455 #ifdef MAJOR_IN_MKDEV
 456 #include <sys/mkdev.h>
 457 # if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
 458 #  define makedev mkdev
 459 # endif
 460 #elif defined MAJOR_IN_SYSMACROS
 461 #include <sys/sysmacros.h>
 462 #endif
 463
 464 #ifdef MAKEDEV_TAKES_3_ARGS
 465 #define MAKEDEV(devmajor,devminor) makedev(0,devmajor,devminor)
 466 #else
 467 #define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor)
 468 #endif
 469
 470 #ifdef HAVE_COMPAT_H
 471 #include <compat.h>
 472 #endif
 473
 474 #ifdef HAVE_LIMITS_H
 475 # include <limits.h>
 476 #endif
 477
 478 #if defined USE_ICONV_OPEN && defined HAVE_ICONV_H
 479 #include <iconv.h>
 480 #ifndef ICONV_CONST
 481 #define ICONV_CONST
 482 #endif
 483 #else
 484 #ifdef ICONV_CONST
 485 #undef ICONV_CONST
 486 #endif
 487 #ifdef ICONV_OPTION
 488 #undef ICONV_OPTION
 489 #endif
 490 #ifdef iconv_t
 491 #undef iconv_t
 492 #endif
 493 #define iconv_t int
 494 #endif
 495
 496 #include <assert.h>
 497
 498 #include "lib/pool_alloc.h"
 499
 500 #ifndef HAVE_ID_T
 501 typedef unsigned int id_t;
 502 #endif
 503 #ifndef HAVE_PID_T
 504 typedef int pid_t;
 505 #endif
 506 #ifndef HAVE_MODE_T
 507 typedef unsigned int mode_t;
 508 #endif
 509 #ifndef HAVE_OFF_T
 510 typedef long off_t;
 511 #undef SIZEOF_OFF_T
 512 #define SIZEOF_OFF_T SIZEOF_LONG
 513 #endif
 514 #ifndef HAVE_SIZE_T
 515 typedef unsigned int size_t;
 516 #endif
 517
 518 #define BOOL int
 519
 520 #ifndef uchar
 521 #define uchar unsigned char
 522 #endif
 523
 524 #ifdef SIGNED_CHAR_OK
 525 #define schar signed char
 526 #else
 527 #define schar char
 528 #endif
 529
 530 #ifndef int16
 531 #if SIZEOF_INT16_T == 2
 532 # define int16 int16_t
 533 #else
 534 # define int16 short
 535 #endif
 536 #endif
 537
 538 #ifndef uint16
 539 #if SIZEOF_UINT16_T == 2
 540 # define uint16 uint16_t
 541 #else
 542 # define uint16 unsigned int16
 543 #endif
 544 #endif
 545
 546 /* Find a variable that is either exactly 32-bits or longer.
 547  * If some code depends on 32-bit truncation, it will need to
 548  * take special action in a "#if SIZEOF_INT32 > 4" section. */
 549 #ifndef int32
 550 #if SIZEOF_INT32_T == 4
 551 # define int32 int32_t
 552 # define SIZEOF_INT32 4
 553 #elif SIZEOF_INT == 4
 554 # define int32 int
 555 # define SIZEOF_INT32 4
 556 #elif SIZEOF_LONG == 4
 557 # define int32 long
 558 # define SIZEOF_INT32 4
 559 #elif SIZEOF_SHORT == 4
 560 # define int32 short
 561 # define SIZEOF_INT32 4
 562 #elif SIZEOF_INT > 4
 563 # define int32 int
 564 # define SIZEOF_INT32 SIZEOF_INT
 565 #elif SIZEOF_LONG > 4
 566 # define int32 long
 567 # define SIZEOF_INT32 SIZEOF_LONG
 568 #else
 569 # error Could not find a 32-bit integer variable
 570 #endif
 571 #else
 572 # define SIZEOF_INT32 4
 573 #endif
 574
 575 #ifndef uint32
 576 #if SIZEOF_UINT32_T == 4
 577 # define uint32 uint32_t
 578 #else
 579 # define uint32 unsigned int32
 580 #endif
 581 #endif
 582
 583 #if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64
 584 #define OFF_T off_t
 585 #define STRUCT_STAT struct stat
 586 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF_T
 587 #else
 588 #define OFF_T off64_t
 589 #define STRUCT_STAT struct stat64
 590 #define USE_STAT64_FUNCS 1
 591 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF64_T
 592 #endif
 593
 594 /* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF
 595  * that's the maximum size the file system can handle and there is no
 596  * 64-bit type available.  The rsync source must therefore take steps
 597  * to ensure that any code that really requires a 64-bit integer has
 598  * it (e.g. the checksum code uses two 32-bit integers for its 64-bit
 599  * counter). */
 600 #if SIZEOF_INT64_T == 8
 601 # define int64 int64_t
 602 # define SIZEOF_INT64 8
 603 #elif SIZEOF_LONG == 8
 604 # define int64 long
 605 # define SIZEOF_INT64 8
 606 #elif SIZEOF_INT == 8
 607 # define int64 int
 608 # define SIZEOF_INT64 8
 609 #elif SIZEOF_LONG_LONG == 8
 610 # define int64 long long
 611 # define SIZEOF_INT64 8
 612 #elif SIZEOF_OFF64_T == 8
 613 # define int64 off64_t
 614 # define SIZEOF_INT64 8
 615 #elif SIZEOF_OFF_T == 8
 616 # define int64 off_t
 617 # define SIZEOF_INT64 8
 618 #elif SIZEOF_INT > 8
 619 # define int64 int
 620 # define SIZEOF_INT64 SIZEOF_INT
 621 #elif SIZEOF_LONG > 8
 622 # define int64 long
 623 # define SIZEOF_INT64 SIZEOF_LONG
 624 #elif SIZEOF_LONG_LONG > 8
 625 # define int64 long long
 626 # define SIZEOF_INT64 SIZEOF_LONG_LONG
 627 #else
 628 /* As long as it gets... */
 629 # define int64 off_t
 630 # define SIZEOF_INT64 SIZEOF_OFF_T
 631 #endif
 632
 633 struct hashtable {
 634         void *nodes;
 635         int32 size, entries;
 636         uint32 node_size;
 637         short key64;
 638 };
 639
 640 struct ht_int32_node {
 641         void *data;
 642         int32 key;
 643 };
 644
 645 struct ht_int64_node {
 646         void *data;
 647         int64 key;
 648 };
 649
 650 #define HT_NODE(tbl, bkts, i) ((void*)((char*)(bkts) + (i)*(tbl)->node_size))
 651 #define HT_KEY(node, k64) ((k64)? ((struct ht_int64_node*)(node))->key \
 652                          : (int64)((struct ht_int32_node*)(node))->key)
 653
 654 #ifndef MIN
 655 #define MIN(a,b) ((a)<(b)?(a):(b))
 656 #endif
 657
 658 #ifndef MAX
 659 #define MAX(a,b) ((a)>(b)?(a):(b))
 660 #endif
 661
 662 #ifndef MAXHOSTNAMELEN
 663 #define MAXHOSTNAMELEN 256
 664 #endif
 665
 666 #define SUM_LENGTH 16
 667 #define SHORT_SUM_LENGTH 2
 668 #define BLOCKSUM_BIAS 10
 669
 670 #ifndef MAXPATHLEN
 671 #define MAXPATHLEN 1024
 672 #endif
 673
 674 /* We want a roomy line buffer that can hold more than MAXPATHLEN,
 675  * and significantly more than an overly short MAXPATHLEN. */
 676 #if MAXPATHLEN < 4096
 677 #define BIGPATHBUFLEN (4096+1024)
 678 #else
 679 #define BIGPATHBUFLEN (MAXPATHLEN+1024)
 680 #endif
 681
 682 #ifndef NAME_MAX
 683 #define NAME_MAX 255
 684 #endif
 685
 686 #ifndef INADDR_NONE
 687 #define INADDR_NONE 0xffffffff
 688 #endif
 689
 690 #ifndef IN_LOOPBACKNET
 691 #define IN_LOOPBACKNET 127
 692 #endif
 693
 694 #if HAVE_UNIXWARE_ACLS|HAVE_SOLARIS_ACLS|HAVE_HPUX_ACLS
 695 #define ACLS_NEED_MASK 1
 696 #endif
 697
 698 #if defined HAVE_FALLOCATE || HAVE_SYS_FALLOCATE
 699 #ifdef HAVE_LINUX_FALLOC_H
 700 #include <linux/falloc.h>
 701 #endif
 702 #ifdef FALLOC_FL_KEEP_SIZE
 703 #define SUPPORT_PREALLOCATION 1
 704 #elif defined HAVE_FTRUNCATE
 705 #define SUPPORT_PREALLOCATION 1
 706 #define PREALLOCATE_NEEDS_TRUNCATE 1
 707 #endif
 708 #else /* !fallocate */
 709 #if defined HAVE_EFFICIENT_POSIX_FALLOCATE && defined HAVE_FTRUNCATE
 710 #define SUPPORT_PREALLOCATION 1
 711 #define PREALLOCATE_NEEDS_TRUNCATE 1
 712 #endif
 713 #endif
 714
 715 #if SIZEOF_CHARP == 4
 716 # define PTRS_ARE_32 1
 717 # define PTR_EXTRA_CNT 1
 718 #elif SIZEOF_CHARP == 8
 719 # define PTRS_ARE_64 1
 720 # define PTR_EXTRA_CNT EXTRA64_CNT
 721 #else
 722 # error Character pointers are not 4 or 8 bytes.
 723 #endif
 724
 725 union file_extras {
 726         int32 num;
 727         uint32 unum;
 728 #ifdef PTRS_ARE_32
 729         const char* ptr;
 730 #endif
 731 };
 732
 733 union file_extras64 {
 734         int64 num;
 735 #ifdef PTRS_ARE_64
 736         const char* ptr;
 737 #endif
 738 };
 739
 740 struct file_struct {
 741         const char *dirname;    /* The dir info inside the transfer */
 742         time_t modtime;         /* When the item was last modified */
 743         uint32 len32;           /* Lowest 32 bits of the file's length */
 744         uint16 mode;            /* The item's type and permissions */
 745         uint16 flags;           /* The FLAG_* bits for this item */
 746         const char basename[1]; /* The basename (AKA filename) follows */
 747 };
 748
 749 extern int file_extra_cnt;
 750 extern int inc_recurse;
 751 extern int atimes_ndx;
 752 extern int pathname_ndx;
 753 extern int depth_ndx;
 754 extern int uid_ndx;
 755 extern int gid_ndx;
 756 extern int acls_ndx;
 757 extern int xattrs_ndx;
 758
 759 #define FILE_STRUCT_LEN (offsetof(struct file_struct, basename))
 760 #define EXTRA_LEN (sizeof (union file_extras))
 761 #define DEV_EXTRA_CNT 2
 762 #define DIRNODE_EXTRA_CNT 3
 763 #define EXTRA64_CNT ((sizeof (union file_extras64) + EXTRA_LEN - 1) / EXTRA_LEN)
 764 #define SUM_EXTRA_CNT ((MAX_DIGEST_LEN + EXTRA_LEN - 1) / EXTRA_LEN)
 765
 766 #define REQ_EXTRA(f,ndx) ((union file_extras*)(f) - (ndx))
 767 #define OPT_EXTRA(f,bump) ((union file_extras*)(f) - file_extra_cnt - 1 - (bump))
 768
 769 /* These are guaranteed to be allocated first in the array so that they
 770  * are aligned for direct int64-pointer access. */
 771 #define REQ_EXTRA64(f,ndx) ((union file_extras64*)REQ_EXTRA(f,ndx))
 772
 773 #define NSEC_BUMP(f) ((f)->flags & FLAG_MOD_NSEC ? 1 : 0)
 774 #define LEN64_BUMP(f) ((f)->flags & FLAG_LENGTH64 ? 1 : 0)
 775 #define START_BUMP(f) (NSEC_BUMP(f) + LEN64_BUMP(f))
 776 #define HLINK_BUMP(f) ((f)->flags & (FLAG_HLINKED|FLAG_HLINK_DONE) ? inc_recurse+1 : 0)
 777 #define ACL_BUMP(f) (acls_ndx ? 1 : 0)
 778
 779 /* The length applies to all items. */
 780 #if SIZEOF_INT64 < 8
 781 #define F_LENGTH(f) ((int64)(f)->len32)
 782 #else
 783 #define F_HIGH_LEN(f) (OPT_EXTRA(f, NSEC_BUMP(f))->unum)
 784 #define F_LENGTH(f) ((int64)(f)->len32 + ((f)->flags & FLAG_LENGTH64 ? (int64)F_HIGH_LEN(f) << 32 : 0))
 785 #endif
 786
 787 #define F_MOD_NSEC(f) OPT_EXTRA(f, 0)->unum
 788 #define F_MOD_NSEC_or_0(f) ((f)->flags & FLAG_MOD_NSEC ? F_MOD_NSEC(f) : 0)
 789
 790 /* If there is a symlink string, it is always right after the basename */
 791 #define F_SYMLINK(f) ((f)->basename + strlen((f)->basename) + 1)
 792
 793 /* The sending side always has this available: */
 794 #ifdef PTRS_ARE_32
 795 #define F_PATHNAME(f) REQ_EXTRA(f, pathname_ndx)->ptr
 796 #else
 797 #define F_PATHNAME(f) REQ_EXTRA64(f, pathname_ndx)->ptr
 798 #endif
 799
 800 /* The receiving side always has this available: */
 801 #define F_DEPTH(f) REQ_EXTRA(f, depth_ndx)->num
 802
 803 /* When the associated option is on, all entries will have these present: */
 804 #define F_OWNER(f) REQ_EXTRA(f, uid_ndx)->unum
 805 #define F_GROUP(f) REQ_EXTRA(f, gid_ndx)->unum
 806 #define F_ACL(f) REQ_EXTRA(f, acls_ndx)->num
 807 #define F_XATTR(f) REQ_EXTRA(f, xattrs_ndx)->num
 808 #define F_NDX(f) REQ_EXTRA(f, unsort_ndx)->num
 809 #define F_ATIME(f) REQ_EXTRA64(f, atimes_ndx)->num
 810
 811 /* These items are per-entry optional: */
 812 #define F_HL_GNUM(f) OPT_EXTRA(f, START_BUMP(f))->num /* non-dirs */
 813 #define F_HL_PREV(f) OPT_EXTRA(f, START_BUMP(f)+inc_recurse)->num /* non-dirs */
 814 #define F_DIR_NODE_P(f) (&OPT_EXTRA(f, START_BUMP(f) \
 815                                 + DIRNODE_EXTRA_CNT - 1)->num) /* sender dirs */
 816 #define F_DIR_RELNAMES_P(f) (&OPT_EXTRA(f, START_BUMP(f) + DIRNODE_EXTRA_CNT \
 817                                 + PTR_EXTRA_CNT - 1)->num) /* sender dirs */
 818 #define F_DIR_DEFACL(f) OPT_EXTRA(f, START_BUMP(f))->unum /* receiver dirs */
 819 #define F_DIR_DEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + ACL_BUMP(f) \
 820                                 + DEV_EXTRA_CNT - 1)->unum) /* receiver dirs */
 821
 822 /* This optional item might follow an F_HL_*() item. */
 823 #define F_RDEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) + DEV_EXTRA_CNT - 1)->unum)
 824
 825 /* The sum is only present on regular files. */
 826 #define F_SUM(f) ((char*)OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) \
 827                                     + SUM_EXTRA_CNT - 1))
 828
 829 /* Some utility defines: */
 830 #define F_IS_ACTIVE(f) (f)->basename[0]
 831 #define F_IS_HLINKED(f) ((f)->flags & FLAG_HLINKED)
 832
 833 #define F_HLINK_NOT_FIRST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_FIRST)
 834 #define F_HLINK_NOT_LAST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_LAST)
 835
 836 /* These access the F_DIR_DEV_P() and F_RDEV_P() values: */
 837 #define DEV_MAJOR(a) (a)[0]
 838 #define DEV_MINOR(a) (a)[1]
 839
 840 /* These access the F_DIRS_NODE_P() values: */
 841 #define DIR_PARENT(a) (a)[0]
 842 #define DIR_FIRST_CHILD(a) (a)[1]
 843 #define DIR_NEXT_SIBLING(a) (a)[2]
 844
 845 #define IS_MISSING_FILE(statbuf) ((statbuf).st_mode == 0)
 846
 847 /*
 848  * Start the flist array at FLIST_START entries and grow it
 849  * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
 850  */
 851 #define FLIST_START     (32 * 1024)
 852 #define FLIST_LINEAR    (FLIST_START * 512)
 853
 854 /*
 855  * Extent size for allocation pools: A minimum size of 128KB
 856  * is needed to mmap them so that freeing will release the
 857  * space to the OS.
 858  *
 859  * Larger sizes reduce leftover fragments and speed free calls
 860  * (when they happen). Smaller sizes increase the chance of
 861  * freed allocations freeing whole extents.
 862  */
 863 #define NORMAL_EXTENT   (256 * 1024)
 864 #define SMALL_EXTENT    (128 * 1024)
 865
 866 #define FLIST_TEMP      (1<<1)
 867
 868 struct file_list {
 869         struct file_list *next, *prev;
 870         struct file_struct **files, **sorted;
 871         alloc_pool_t file_pool;
 872         void *pool_boundary;
 873         int used, malloced;
 874         int low, high;  /* 0-relative index values excluding empties */
 875         int ndx_start;  /* the start offset for inc_recurse mode */
 876         int flist_num;  /* 1-relative file_list number or 0 */
 877         int parent_ndx; /* dir_flist index of parent directory */
 878         int in_progress, to_redo;
 879 };
 880
 881 #define SUMFLG_SAME_OFFSET      (1<<0)
 882
 883 struct sum_buf {
 884         OFF_T offset;           /**< offset in file of this chunk */
 885         int32 len;              /**< length of chunk of file */
 886         uint32 sum1;            /**< simple checksum */
 887         int32 chain;            /**< next hash-table collision */
 888         short flags;            /**< flag bits */
 889         char sum2[SUM_LENGTH];  /**< checksum  */
 890 };
 891
 892 struct sum_struct {
 893         OFF_T flength;          /**< total file length */
 894         struct sum_buf *sums;   /**< points to info for each chunk */
 895         int32 count;            /**< how many chunks */
 896         int32 blength;          /**< block_length */
 897         int32 remainder;        /**< flength % block_length */
 898         int s2length;           /**< sum2_length */
 899 };
 900
 901 struct map_struct {
 902         OFF_T file_size;        /* File size (from stat)                */
 903         OFF_T p_offset;         /* Window start                         */
 904         OFF_T p_fd_offset;      /* offset of cursor in fd ala lseek     */
 905         char *p;                /* Window pointer                       */
 906         int32 p_size;           /* Largest window size we allocated     */
 907         int32 p_len;            /* Latest (rounded) window size         */
 908         int32 def_window_size;  /* Default window size                  */
 909         int fd;                 /* File Descriptor                      */
 910         int status;             /* first errno from read errors         */
 911 };
 912
 913 #define NAME_IS_FILE            (0)    /* filter name as a file */
 914 #define NAME_IS_DIR             (1<<0) /* filter name as a dir */
 915 #define NAME_IS_XATTR           (1<<2) /* filter name as an xattr */
 916
 917 #define FILTRULE_WILD           (1<<0) /* pattern has '*', '[', and/or '?' */
 918 #define FILTRULE_WILD2          (1<<1) /* pattern has '**' */
 919 #define FILTRULE_WILD2_PREFIX   (1<<2) /* pattern starts with "**" */
 920 #define FILTRULE_WILD3_SUFFIX   (1<<3) /* pattern ends with "***" */
 921 #define FILTRULE_ABS_PATH       (1<<4) /* path-match on absolute path */
 922 #define FILTRULE_INCLUDE        (1<<5) /* this is an include, not an exclude */
 923 #define FILTRULE_DIRECTORY      (1<<6) /* this matches only directories */
 924 #define FILTRULE_WORD_SPLIT     (1<<7) /* split rules on whitespace */
 925 #define FILTRULE_NO_INHERIT     (1<<8) /* don't inherit these rules */
 926 #define FILTRULE_NO_PREFIXES    (1<<9) /* parse no prefixes from patterns */
 927 #define FILTRULE_MERGE_FILE     (1<<10)/* specifies a file to merge */
 928 #define FILTRULE_PERDIR_MERGE   (1<<11)/* merge-file is searched per-dir */
 929 #define FILTRULE_EXCLUDE_SELF   (1<<12)/* merge-file name should be excluded */
 930 #define FILTRULE_FINISH_SETUP   (1<<13)/* per-dir merge file needs setup */
 931 #define FILTRULE_NEGATE         (1<<14)/* rule matches when pattern does not */
 932 #define FILTRULE_CVS_IGNORE     (1<<15)/* rule was -C or :C */
 933 #define FILTRULE_SENDER_SIDE    (1<<16)/* rule applies to the sending side */
 934 #define FILTRULE_RECEIVER_SIDE  (1<<17)/* rule applies to the receiving side */
 935 #define FILTRULE_CLEAR_LIST     (1<<18)/* this item is the "!" token */
 936 #define FILTRULE_PERISHABLE     (1<<19)/* perishable if parent dir goes away */
 937 #define FILTRULE_XATTR          (1<<20)/* rule only applies to xattr names */
 938
 939 #define FILTRULES_SIDES (FILTRULE_SENDER_SIDE | FILTRULE_RECEIVER_SIDE)
 940
 941 typedef struct filter_struct {
 942         struct filter_struct *next;
 943         char *pattern;
 944         uint32 rflags;
 945         union {
 946                 int slash_cnt;
 947                 struct filter_list_struct *mergelist;
 948         } u;
 949 } filter_rule;
 950
 951 typedef struct filter_list_struct {
 952         filter_rule *head;
 953         filter_rule *tail;
 954         char *debug_type;
 955 } filter_rule_list;
 956
 957 struct stats {
 958         int64 total_size;
 959         int64 total_transferred_size;
 960         int64 total_written;
 961         int64 total_read;
 962         int64 literal_data;
 963         int64 matched_data;
 964         int64 flist_buildtime;
 965         int64 flist_xfertime;
 966         int64 flist_size;
 967         int num_files, num_dirs, num_symlinks, num_devices, num_specials;
 968         int created_files, created_dirs, created_symlinks, created_devices, created_specials;
 969         int deleted_files, deleted_dirs, deleted_symlinks, deleted_devices, deleted_specials;
 970         int xferred_files;
 971 };
 972
 973 struct chmod_mode_struct;
 974
 975 struct flist_ndx_item {
 976         struct flist_ndx_item *next;
 977         int ndx;
 978 };
 979
 980 typedef struct {
 981         struct flist_ndx_item *head, *tail;
 982 } flist_ndx_list;
 983
 984 #define EMPTY_ITEM_LIST {NULL, 0, 0}
 985
 986 typedef struct {
 987         void *items;
 988         size_t count;
 989         size_t malloced;
 990 } item_list;
 991
 992 #define EXPAND_ITEM_LIST(lp, type, incr) \
 993         (type*)expand_item_list(lp, sizeof (type), #type, incr)
 994
 995 #define EMPTY_XBUF {NULL, 0, 0, 0}
 996
 997 typedef struct {
 998         char *buf;
 999         size_t pos;  /* pos = read pos in the buf */
1000         size_t len;  /* len = chars following pos */
1001         size_t size; /* size = total space in buf */
1002 } xbuf;
1003
1004 #define INIT_XBUF(xb, str, ln, sz) (xb).buf = (str), (xb).len = (ln), (xb).size = (sz), (xb).pos = 0
1005 #define INIT_XBUF_STRLEN(xb, str) (xb).buf = (str), (xb).len = strlen((xb).buf), (xb).size = (size_t)-1, (xb).pos = 0
1006 /* This one is used to make an output xbuf based on a char[] buffer: */
1007 #define INIT_CONST_XBUF(xb, bf) (xb).buf = (bf), (xb).size = sizeof (bf), (xb).len = (xb).pos = 0
1008
1009 #define ICB_EXPAND_OUT (1<<0)
1010 #define ICB_INCLUDE_BAD (1<<1)
1011 #define ICB_INCLUDE_INCOMPLETE (1<<2)
1012 #define ICB_CIRCULAR_OUT (1<<3)
1013 #define ICB_INIT (1<<4)
1014
1015 #define IOBUF_KEEP_BUFS 0
1016 #define IOBUF_FREE_BUFS 1
1017
1018 #define MPLX_SWITCHING IOBUF_KEEP_BUFS
1019 #define MPLX_ALL_DONE IOBUF_FREE_BUFS
1020 #define MPLX_TO_BUFFERED 2
1021
1022 #define RL_EOL_NULLS (1<<0)
1023 #define RL_DUMP_COMMENTS (1<<1)
1024 #define RL_CONVERT (1<<2)
1025
1026 typedef struct {
1027         char name_type;
1028         char fname[1]; /* has variable size */
1029 } relnamecache;
1030
1031 #include "byteorder.h"
1032 #include "lib/mdigest.h"
1033 #include "lib/wildmatch.h"
1034 #include "lib/permstring.h"
1035 #include "lib/addrinfo.h"
1036
1037 #ifndef __GNUC__
1038 #define __attribute__(x)
1039 #else
1040 # if __GNUC__ <= 2
1041 # define NORETURN
1042 # endif
1043 #endif
1044
1045 #define UNUSED(x) x __attribute__((__unused__))
1046 #ifndef NORETURN
1047 #define NORETURN __attribute__((__noreturn__))
1048 #endif
1049
1050 typedef struct {
1051     STRUCT_STAT st;
1052 #ifdef SUPPORT_ACLS
1053     struct rsync_acl *acc_acl; /* access ACL */
1054     struct rsync_acl *def_acl; /* default ACL */
1055 #endif
1056 #ifdef SUPPORT_XATTRS
1057     item_list *xattr;
1058 #endif
1059 } stat_x;
1060
1061 #define ACL_READY(sx) ((sx).acc_acl != NULL)
1062 #define XATTR_READY(sx) ((sx).xattr != NULL)
1063
1064 #include "proto.h"
1065
1066 #ifndef SUPPORT_XATTRS
1067 #define x_stat(fn,fst,xst) do_stat(fn,fst)
1068 #define x_lstat(fn,fst,xst) do_lstat(fn,fst)
1069 #define x_fstat(fd,fst,xst) do_fstat(fd,fst)
1070 #endif
1071
1072 /* We have replacement versions of these if they're missing. */
1073 #ifndef HAVE_ASPRINTF
1074 int asprintf(char **ptr, const char *format, ...);
1075 #endif
1076
1077 #ifndef HAVE_VASPRINTF
1078 int vasprintf(char **ptr, const char *format, va_list ap);
1079 #endif
1080
1081 #if !defined HAVE_VSNPRINTF || !defined HAVE_C99_VSNPRINTF
1082 #define vsnprintf rsync_vsnprintf
1083 int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1084 #endif
1085
1086 #if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF
1087 #define snprintf rsync_snprintf
1088 int snprintf(char *str, size_t count, const char *fmt,...);
1089 #endif
1090
1091
1092 #ifndef HAVE_STRERROR
1093 extern char *sys_errlist[];
1094 #define strerror(i) sys_errlist[i]
1095 #endif
1096
1097 #ifndef HAVE_STRCHR
1098 # define strchr                 index
1099 # define strrchr                rindex
1100 #endif
1101
1102 #ifndef HAVE_ERRNO_DECL
1103 extern int errno;
1104 #endif
1105
1106 #ifdef HAVE_READLINK
1107 #define SUPPORT_LINKS 1
1108 #if !defined NO_SYMLINK_XATTRS && !defined NO_SYMLINK_USER_XATTRS
1109 #define do_readlink(path, buf, bufsiz) readlink(path, buf, bufsiz)
1110 #endif
1111 #endif
1112 #ifdef HAVE_LINK
1113 #define SUPPORT_HARD_LINKS 1
1114 #endif
1115
1116 #ifdef HAVE_SIGACTION
1117 #define SIGACTION(n,h) sigact.sa_handler=(h), sigaction((n),&sigact,NULL)
1118 #define signal(n,h) we_need_to_call_SIGACTION_not_signal(n,h)
1119 #else
1120 #define SIGACTION(n,h) signal(n,h)
1121 #endif
1122
1123 #ifndef EWOULDBLOCK
1124 #define EWOULDBLOCK EAGAIN
1125 #endif
1126
1127 #ifndef STDIN_FILENO
1128 #define STDIN_FILENO 0
1129 #endif
1130
1131 #ifndef STDOUT_FILENO
1132 #define STDOUT_FILENO 1
1133 #endif
1134
1135 #ifndef STDERR_FILENO
1136 #define STDERR_FILENO 2
1137 #endif
1138
1139 #ifndef S_IRUSR
1140 #define S_IRUSR 0400
1141 #endif
1142
1143 #ifndef S_IWUSR
1144 #define S_IWUSR 0200
1145 #endif
1146
1147 #ifndef ACCESSPERMS
1148 #define ACCESSPERMS 0777
1149 #endif
1150
1151 #ifndef S_ISVTX
1152 #define S_ISVTX 0
1153 #endif
1154
1155 #define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
1156
1157 #ifndef _S_IFMT
1158 #define _S_IFMT        0170000
1159 #endif
1160
1161 #ifndef _S_IFLNK
1162 #define _S_IFLNK  0120000
1163 #endif
1164
1165 #ifndef S_ISLNK
1166 #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
1167 #endif
1168
1169 #ifndef S_ISBLK
1170 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
1171 #endif
1172
1173 #ifndef S_ISCHR
1174 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
1175 #endif
1176
1177 #ifndef S_ISSOCK
1178 #ifdef _S_IFSOCK
1179 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
1180 #else
1181 #define S_ISSOCK(mode) (0)
1182 #endif
1183 #endif
1184
1185 #ifndef S_ISFIFO
1186 #ifdef _S_IFIFO
1187 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
1188 #else
1189 #define S_ISFIFO(mode) (0)
1190 #endif
1191 #endif
1192
1193 #ifndef S_ISDIR
1194 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
1195 #endif
1196
1197 #ifndef S_ISREG
1198 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
1199 #endif
1200
1201 /* work out what fcntl flag to use for non-blocking */
1202 #ifdef O_NONBLOCK
1203 # define NONBLOCK_FLAG O_NONBLOCK
1204 #elif defined SYSV
1205 # define NONBLOCK_FLAG O_NDELAY
1206 #else
1207 # define NONBLOCK_FLAG FNDELAY
1208 #endif
1209
1210 #ifndef INADDR_LOOPBACK
1211 #define INADDR_LOOPBACK 0x7f000001
1212 #endif
1213
1214 #ifndef INADDR_NONE
1215 #define INADDR_NONE 0xffffffff
1216 #endif
1217
1218 #define IS_SPECIAL(mode) (S_ISSOCK(mode) || S_ISFIFO(mode))
1219 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode))
1220
1221 #define PRESERVE_FILE_TIMES     (1<<0)
1222 #define PRESERVE_DIR_TIMES      (1<<1)
1223 #define PRESERVE_LINK_TIMES     (1<<2)
1224
1225 /* Initial mask on permissions given to temporary files.  Mask off setuid
1226      bits and group access because of potential race-condition security
1227      holes, and mask other access because mode 707 is bizarre */
1228 #define INITACCESSPERMS 0700
1229
1230 /* handler for null strings in printf format */
1231 #define NS(s) ((s)?(s):"<NULL>")
1232
1233 /* Convenient wrappers for malloc and realloc.  Use them. */
1234 #define new(type) ((type*)malloc(sizeof (type)))
1235 #define new0(type) ((type*)calloc(1, sizeof (type)))
1236 #define new_array(type, num) ((type*)_new_array((num), sizeof (type), 0))
1237 #define new_array0(type, num) ((type*)_new_array((num), sizeof (type), 1))
1238 #define realloc_array(ptr, type, num) ((type*)_realloc_array((ptr), sizeof(type), (num)))
1239
1240 /* use magic gcc attributes to catch format errors */
1241  void rprintf(enum logcode , const char *, ...)
1242      __attribute__((format (printf, 2, 3)))
1243 ;
1244
1245 /* This is just like rprintf, but it also tries to print some
1246  * representation of the error code.  Normally errcode = errno. */
1247 void rsyserr(enum logcode, int, const char *, ...)
1248      __attribute__((format (printf, 3, 4)))
1249      ;
1250
1251 /* Make sure that the O_BINARY flag is defined. */
1252 #ifndef O_BINARY
1253 #define O_BINARY 0
1254 #endif
1255
1256 #ifndef HAVE_STRLCPY
1257 size_t strlcpy(char *d, const char *s, size_t bufsize);
1258 #endif
1259
1260 #ifndef HAVE_STRLCAT
1261 size_t strlcat(char *d, const char *s, size_t bufsize);
1262 #endif
1263
1264 #ifndef WEXITSTATUS
1265 #define WEXITSTATUS(stat)       ((int)(((stat)>>8)&0xFF))
1266 #endif
1267 #ifndef WIFEXITED
1268 #define WIFEXITED(stat)         ((int)((stat)&0xFF) == 0)
1269 #endif
1270
1271 #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
1272
1273 #ifdef HAVE_GETEUID
1274 #define MY_UID() geteuid()
1275 #else
1276 #define MY_UID() getuid()
1277 #endif
1278
1279 #ifdef HAVE_GETEGID
1280 #define MY_GID() getegid()
1281 #else
1282 #define MY_GID() getgid()
1283 #endif
1284
1285 #ifdef FORCE_FD_ZERO_MEMSET
1286 #undef FD_ZERO
1287 #define FD_ZERO(fdsetp) memset(fdsetp, 0, sizeof (fd_set))
1288 #endif
1289
1290 extern short info_levels[], debug_levels[];
1291
1292 #define INFO_GTE(flag, lvl) (info_levels[INFO_##flag] >= (lvl))
1293 #define INFO_EQ(flag, lvl) (info_levels[INFO_##flag] == (lvl))
1294 #define DEBUG_GTE(flag, lvl) (debug_levels[DEBUG_##flag] >= (lvl))
1295 #define DEBUG_EQ(flag, lvl) (debug_levels[DEBUG_##flag] == (lvl))
1296
1297 #define INFO_BACKUP 0
1298 #define INFO_COPY (INFO_BACKUP+1)
1299 #define INFO_DEL (INFO_COPY+1)
1300 #define INFO_FLIST (INFO_DEL+1)
1301 #define INFO_MISC (INFO_FLIST+1)
1302 #define INFO_MOUNT (INFO_MISC+1)
1303 #define INFO_NAME (INFO_MOUNT+1)
1304 #define INFO_PROGRESS (INFO_NAME+1)
1305 #define INFO_REMOVE (INFO_PROGRESS+1)
1306 #define INFO_SKIP (INFO_REMOVE+1)
1307 #define INFO_STATS (INFO_SKIP+1)
1308 #define INFO_SYMSAFE (INFO_STATS+1)
1309
1310 #define COUNT_INFO (INFO_SYMSAFE+1)
1311
1312 #define DEBUG_ACL 0
1313 #define DEBUG_BACKUP (DEBUG_ACL+1)
1314 #define DEBUG_BIND (DEBUG_BACKUP+1)
1315 #define DEBUG_CHDIR (DEBUG_BIND+1)
1316 #define DEBUG_CONNECT (DEBUG_CHDIR+1)
1317 #define DEBUG_CMD (DEBUG_CONNECT+1)
1318 #define DEBUG_DEL (DEBUG_CMD+1)
1319 #define DEBUG_DELTASUM (DEBUG_DEL+1)
1320 #define DEBUG_DUP (DEBUG_DELTASUM+1)
1321 #define DEBUG_EXIT (DEBUG_DUP+1)
1322 #define DEBUG_FILTER (DEBUG_EXIT+1)
1323 #define DEBUG_FLIST (DEBUG_FILTER+1)
1324 #define DEBUG_FUZZY (DEBUG_FLIST+1)
1325 #define DEBUG_GENR (DEBUG_FUZZY+1)
1326 #define DEBUG_HASH (DEBUG_GENR+1)
1327 #define DEBUG_HLINK (DEBUG_HASH+1)
1328 #define DEBUG_ICONV (DEBUG_HLINK+1)
1329 #define DEBUG_IO (DEBUG_ICONV+1)
1330 #define DEBUG_OWN (DEBUG_IO+1)
1331 #define DEBUG_PROTO (DEBUG_OWN+1)
1332 #define DEBUG_RECV (DEBUG_PROTO+1)
1333 #define DEBUG_SEND (DEBUG_RECV+1)
1334 #define DEBUG_TIME (DEBUG_SEND+1)
1335
1336 #define COUNT_DEBUG (DEBUG_TIME+1)
1337
1338 #ifndef HAVE_INET_NTOP
1339 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
1340 #endif
1341
1342 #ifndef HAVE_INET_PTON
1343 int inet_pton(int af, const char *src, void *dst);
1344 #endif
1345
1346 #ifndef HAVE_GETPASS
1347 char *getpass(const char *prompt);
1348 #endif
1349
1350 #ifdef MAINTAINER_MODE
1351 const char *get_panic_action(void);
1352 #endif