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) 2003-2022 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 #define Unset (-1) /* Our BOOL values are always an int. */
  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 SYMLINK_PREFIX "/rsyncd-munged/"  /* This MUST have a trailing slash! */
  37 #define SYMLINK_PREFIX_LEN ((int)sizeof SYMLINK_PREFIX - 1)
  38
  39 #define BACKUP_SUFFIX "~"
  40
  41 /* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
  42    incompatible with older versions :-( */
  43 #define CHAR_OFFSET 0
  44
  45 /* These flags are only used during the flist transfer. */
  46
  47 #define XMIT_TOP_DIR (1<<0)
  48 #define XMIT_SAME_MODE (1<<1)
  49 #define XMIT_SAME_RDEV_pre28 (1<<2)     /* protocols 20 - 27  */
  50 #define XMIT_EXTENDED_FLAGS (1<<2)      /* protocols 28 - now */
  51 #define XMIT_SAME_UID (1<<3)
  52 #define XMIT_SAME_GID (1<<4)
  53 #define XMIT_SAME_NAME (1<<5)
  54 #define XMIT_LONG_NAME (1<<6)
  55 #define XMIT_SAME_TIME (1<<7)
  56
  57 #define XMIT_SAME_RDEV_MAJOR (1<<8)     /* protocols 28 - now (devices only) */
  58 #define XMIT_NO_CONTENT_DIR (1<<8)      /* protocols 30 - now (dirs only) */
  59 #define XMIT_HLINKED (1<<9)             /* protocols 28 - now (non-dirs) */
  60 #define XMIT_SAME_DEV_pre30 (1<<10)     /* protocols 28 - 29  */
  61 #define XMIT_USER_NAME_FOLLOWS (1<<10)  /* protocols 30 - now */
  62 #define XMIT_RDEV_MINOR_8_pre30 (1<<11) /* protocols 28 - 29  */
  63 #define XMIT_GROUP_NAME_FOLLOWS (1<<11) /* protocols 30 - now */
  64 #define XMIT_HLINK_FIRST (1<<12)        /* protocols 30 - now (HLINKED files only) */
  65 #define XMIT_IO_ERROR_ENDLIST (1<<12)   /* protocols 31*- now (w/XMIT_EXTENDED_FLAGS) (also protocol 30 w/'f' compat flag) */
  66 #define XMIT_MOD_NSEC (1<<13)           /* protocols 31 - now */
  67 #define XMIT_SAME_ATIME (1<<14)         /* any protocol - restricted by command-line option */
  68 #define XMIT_UNUSED_15 (1<<15)          /* unused flag bit */
  69
  70 /* The following XMIT flags require an rsync that uses a varint for the flag values */
  71
  72 #define XMIT_RESERVED_16 (1<<16)        /* reserved for future fileflags use */
  73 #define XMIT_CRTIME_EQ_MTIME (1<<17)    /* any protocol - restricted by command-line option */
  74
  75 /* These flags are used in the live flist data. */
  76
  77 #define FLAG_TOP_DIR (1<<0)     /* sender/receiver/generator */
  78 #define FLAG_OWNED_BY_US (1<<0) /* generator: set by make_file() for aux flists only */
  79 #define FLAG_FILE_SENT (1<<1)   /* sender/receiver/generator */
  80 #define FLAG_DIR_CREATED (1<<1) /* generator */
  81 #define FLAG_CONTENT_DIR (1<<2) /* sender/receiver/generator */
  82 #define FLAG_MOUNT_DIR (1<<3)   /* sender/generator (dirs only) */
  83 #define FLAG_SKIP_HLINK (1<<3)  /* receiver/generator (w/FLAG_HLINKED) */
  84 #define FLAG_DUPLICATE (1<<4)   /* sender */
  85 #define FLAG_MISSING_DIR (1<<4) /* generator */
  86 #define FLAG_HLINKED (1<<5)     /* receiver/generator (checked on all types) */
  87 #define FLAG_HLINK_FIRST (1<<6) /* receiver/generator (w/FLAG_HLINKED) */
  88 #define FLAG_IMPLIED_DIR (1<<6) /* sender/receiver/generator (dirs only) */
  89 #define FLAG_HLINK_LAST (1<<7)  /* receiver/generator */
  90 #define FLAG_HLINK_DONE (1<<8)  /* receiver/generator (checked on all types) */
  91 #define FLAG_LENGTH64 (1<<9)    /* sender/receiver/generator */
  92 #define FLAG_SKIP_GROUP (1<<10) /* receiver/generator */
  93 #define FLAG_TIME_FAILED (1<<11)/* generator */
  94 #define FLAG_MOD_NSEC (1<<12)   /* sender/receiver/generator */
  95
  96 /* These flags are passed to functions but not stored. */
  97
  98 #define FLAG_DIVERT_DIRS (1<<16)   /* sender, but must be unique */
  99 #define FLAG_PERHAPS_DIR (1<<17)   /* generator */
 100
 101 /* These flags are for get_dirlist(). */
 102 #define GDL_IGNORE_FILTER_RULES (1<<0)
 103 #define GDL_PERHAPS_DIR (1<<1)
 104
 105 /* Some helper macros for matching bits. */
 106 #define BITS_SET(val,bits) (((val) & (bits)) == (bits))
 107 #define BITS_SETnUNSET(val,onbits,offbits) (((val) & ((onbits)|(offbits))) == (onbits))
 108 #define BITS_EQUAL(b1,b2,mask) (((unsigned)(b1) & (unsigned)(mask)) \
 109                              == ((unsigned)(b2) & (unsigned)(mask)))
 110
 111 /* Update this if you make incompatible changes and ALSO update the
 112  * SUBPROTOCOL_VERSION if it is not a final (official) release. */
 113 #define PROTOCOL_VERSION 31
 114
 115 /* This is used when working on a new protocol version or for any unofficial
 116  * protocol tweaks.  It should be a non-zero value for each pre-release repo
 117  * change that affects the protocol. The official pre-release versions should
 118  * start with 1 (after incrementing the PROTOCOL_VERSION) and go up by 1 for
 119  * each new protocol change.  For unofficial changes, pick a fairly large
 120  * random number that will hopefully not collide with anyone else's unofficial
 121  * protocol.  It must ALWAYS be 0 when the protocol goes final (and official)
 122  * and NEVER before!  When rsync negotiates a protocol match, it will only
 123  * allow the newest protocol to be used if the SUBPROTOCOL_VERSION matches.
 124  * All older protocol versions MUST be compatible with the final, official
 125  * release of the protocol, so don't tweak the code to change the protocol
 126  * behavior for an older protocol version. */
 127 #define SUBPROTOCOL_VERSION 0
 128
 129 /* We refuse to interoperate with versions that are not in this range.
 130  * Note that we assume we'll work with later versions: the onus is on
 131  * people writing them to make sure that they don't send us anything
 132  * we won't understand.
 133  *
 134  * Interoperation with old but supported protocol versions
 135  * should cause a warning to be printed.  At a future date
 136  * the old protocol will become the minimum and
 137  * compatibility code removed.
 138  *
 139  * There are two possible explanations for the limit at
 140  * MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
 141  * do not interoperate with us, and (more likely) so that we can
 142  * detect an attempt to connect rsync to a non-rsync server, which is
 143  * unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
 144  * MAX_PROTOCOL_VERSION. */
 145
 146 #define MIN_PROTOCOL_VERSION 20
 147 #define OLD_PROTOCOL_VERSION 25
 148 #define MAX_PROTOCOL_VERSION 40
 149
 150 #define MIN_FILECNT_LOOKAHEAD 1000
 151 #define MAX_FILECNT_LOOKAHEAD 10000
 152
 153 #define RSYNC_PORT 873
 154
 155 #define SPARSE_WRITE_SIZE (1024)
 156 #define WRITE_SIZE (32*1024)
 157 #define CHUNK_SIZE (32*1024)
 158 #define MAX_MAP_SIZE (256*1024)
 159 #define IO_BUFFER_SIZE (32*1024)
 160 #define MAX_BLOCK_SIZE ((int32)1 << 17)
 161
 162 /* For compatibility with older rsyncs */
 163 #define OLD_MAX_BLOCK_SIZE ((int32)1 << 29)
 164
 165 #define ROUND_UP_1024(siz) ((siz) & (1024-1) ? ((siz) | (1024-1)) + 1 : (siz))
 166
 167 #define IOERR_GENERAL   (1<<0) /* For backward compatibility, this must == 1 */
 168 #define IOERR_VANISHED  (1<<1)
 169 #define IOERR_DEL_LIMIT (1<<2)
 170
 171 #define MAX_ARGS 1000
 172 #define MAX_BASIS_DIRS 20
 173 #define MAX_SERVER_ARGS (MAX_BASIS_DIRS*2 + 100)
 174
 175 #define COMPARE_DEST 1
 176 #define COPY_DEST 2
 177 #define LINK_DEST 3
 178
 179 #define MPLEX_BASE 7
 180
 181 #define NO_FILTERS      0
 182 #define SERVER_FILTERS  1
 183 #define ALL_FILTERS     2
 184
 185 #define XFLG_FATAL_ERRORS       (1<<0)
 186 #define XFLG_OLD_PREFIXES       (1<<1)
 187 #define XFLG_ANCHORED2ABS       (1<<2) /* leading slash indicates absolute */
 188 #define XFLG_ABS_IF_SLASH       (1<<3) /* leading or interior slash is absolute */
 189 #define XFLG_DIR2WILD3          (1<<4) /* dir/ match gets trailing *** added */
 190
 191 #define ATTRS_REPORT            (1<<0)
 192 #define ATTRS_SKIP_MTIME        (1<<1)
 193 #define ATTRS_ACCURATE_TIME     (1<<2)
 194 #define ATTRS_SKIP_ATIME        (1<<3)
 195 #define ATTRS_SKIP_CRTIME       (1<<5)
 196
 197 #define MSG_FLUSH       2
 198 #define FULL_FLUSH      1
 199 #define NORMAL_FLUSH    0
 200
 201 #define PDIR_CREATE     1
 202 #define PDIR_DELETE     0
 203
 204 /* Note: 0x00 - 0x7F are used for basis_dir[] indexes! */
 205 #define FNAMECMP_BASIS_DIR_LOW  0x00 /* Must remain 0! */
 206 #define FNAMECMP_BASIS_DIR_HIGH 0x7F
 207 #define FNAMECMP_FNAME          0x80
 208 #define FNAMECMP_PARTIAL_DIR    0x81
 209 #define FNAMECMP_BACKUP         0x82
 210 #define FNAMECMP_FUZZY          0x83
 211
 212 /* For use by the itemize_changes code */
 213 #define ITEM_REPORT_ATIME (1<<0)
 214 #define ITEM_REPORT_CHANGE (1<<1)
 215 #define ITEM_REPORT_SIZE (1<<2)     /* regular files only */
 216 #define ITEM_REPORT_TIMEFAIL (1<<2) /* symlinks only */
 217 #define ITEM_REPORT_TIME (1<<3)
 218 #define ITEM_REPORT_PERMS (1<<4)
 219 #define ITEM_REPORT_OWNER (1<<5)
 220 #define ITEM_REPORT_GROUP (1<<6)
 221 #define ITEM_REPORT_ACL (1<<7)
 222 #define ITEM_REPORT_XATTR (1<<8)
 223 #define ITEM_REPORT_CRTIME (1<<10)
 224 #define ITEM_BASIS_TYPE_FOLLOWS (1<<11)
 225 #define ITEM_XNAME_FOLLOWS (1<<12)
 226 #define ITEM_IS_NEW (1<<13)
 227 #define ITEM_LOCAL_CHANGE (1<<14)
 228 #define ITEM_TRANSFER (1<<15)
 229 /* These are outside the range of the transmitted flags. */
 230 #define ITEM_MISSING_DATA (1<<16)          /* used by log_formatted() */
 231 #define ITEM_DELETED (1<<17)               /* used by log_formatted() */
 232 #define ITEM_MATCHED (1<<18)               /* used by itemize() */
 233
 234 #define SIGNIFICANT_ITEM_FLAGS (~(\
 235         ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE))
 236
 237 #define CFN_KEEP_DOT_DIRS (1<<0)
 238 #define CFN_KEEP_TRAILING_SLASH (1<<1)
 239 #define CFN_DROP_TRAILING_DOT_DIR (1<<2)
 240 #define CFN_COLLAPSE_DOT_DOT_DIRS (1<<3)
 241 #define CFN_REFUSE_DOT_DOT_DIRS (1<<4)
 242
 243 #define SP_DEFAULT 0
 244 #define SP_KEEP_DOT_DIRS (1<<0)
 245
 246 #define CD_NORMAL 0
 247 #define CD_SKIP_CHDIR 1
 248
 249 /* Log-message categories.  FLOG only goes to the log file, not the client;
 250  * FCLIENT is the opposite. */
 251 enum logcode {
 252     FNONE=0, /* never sent */
 253     FERROR_XFER=1, FINFO=2, /* sent over socket for any protocol */
 254     FERROR=3, FWARNING=4, /* sent over socket for protocols >= 30 */
 255     FERROR_SOCKET=5, FLOG=6, /* only sent via receiver -> generator pipe */
 256     FERROR_UTF8=8, /* only sent via receiver -> generator pipe */
 257     FCLIENT=7 /* never transmitted (e.g. server converts to FINFO) */
 258 };
 259
 260 /* Messages types that are sent over the message channel.  The logcode
 261  * values must all be present here with identical numbers. */
 262 enum msgcode {
 263         MSG_DATA=0,     /* raw data on the multiplexed stream */
 264         MSG_ERROR_XFER=FERROR_XFER, MSG_INFO=FINFO, /* remote logging */
 265         MSG_ERROR=FERROR, MSG_WARNING=FWARNING, /* protocol-30 remote logging */
 266         MSG_ERROR_SOCKET=FERROR_SOCKET, /* sibling logging */
 267         MSG_ERROR_UTF8=FERROR_UTF8, /* sibling logging */
 268         MSG_LOG=FLOG, MSG_CLIENT=FCLIENT, /* sibling logging */
 269         MSG_REDO=9,     /* reprocess indicated flist index */
 270         MSG_STATS=10,   /* message has stats data for generator */
 271         MSG_IO_ERROR=22,/* the sending side had an I/O error */
 272         MSG_IO_TIMEOUT=33,/* tell client about a daemon's timeout value */
 273         MSG_NOOP=42,    /* a do-nothing message (legacy protocol-30 only) */
 274         MSG_ERROR_EXIT=86, /* synchronize an error exit (siblings and protocol >= 31) */
 275         MSG_SUCCESS=100,/* successfully updated indicated flist index */
 276         MSG_DELETED=101,/* successfully deleted a file on receiving side */
 277         MSG_NO_SEND=102,/* sender failed to open a file we wanted */
 278 };
 279
 280 enum filetype {
 281         FT_UNSUPPORTED, FT_REG, FT_DIR, FT_SYMLINK, FT_SPECIAL, FT_DEVICE
 282 };
 283
 284 #define NDX_DONE -1
 285 #define NDX_FLIST_EOF -2
 286 #define NDX_DEL_STATS -3
 287 #define NDX_FLIST_OFFSET -101
 288
 289 /* For calling delete_item() and delete_dir_contents(). */
 290 #define DEL_NO_UID_WRITE        (1<<0) /* file/dir has our uid w/o write perm */
 291 #define DEL_RECURSE             (1<<1) /* if dir, delete all contents */
 292 #define DEL_DIR_IS_EMPTY        (1<<2) /* internal delete_FUNCTIONS use only */
 293 #define DEL_FOR_FILE            (1<<3) /* making room for a replacement file */
 294 #define DEL_FOR_DIR             (1<<4) /* making room for a replacement dir */
 295 #define DEL_FOR_SYMLINK         (1<<5) /* making room for a replacement symlink */
 296 #define DEL_FOR_DEVICE          (1<<6) /* making room for a replacement device */
 297 #define DEL_FOR_SPECIAL         (1<<7) /* making room for a replacement special */
 298 #define DEL_FOR_BACKUP          (1<<8) /* the delete is for a backup operation */
 299
 300 #define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
 301
 302 enum delret {
 303         DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
 304 };
 305
 306 /* Defines for make_path() */
 307 #define MKP_DROP_NAME           (1<<0) /* drop trailing filename or trailing slash */
 308 #define MKP_SKIP_SLASH          (1<<1) /* skip one or more leading slashes */
 309
 310 /* Defines for maybe_send_keepalive() */
 311 #define MSK_ALLOW_FLUSH         (1<<0)
 312 #define MSK_ACTIVE_RECEIVER     (1<<1)
 313
 314 #include "errcode.h"
 315
 316 #include "config.h"
 317
 318 /* The default RSYNC_RSH is always set in config.h. */
 319
 320 #include <stdio.h>
 321 #ifdef HAVE_SYS_TYPES_H
 322 # include <sys/types.h>
 323 #endif
 324 #ifdef HAVE_SYS_STAT_H
 325 # include <sys/stat.h>
 326 #endif
 327 #ifdef STDC_HEADERS
 328 # include <stdlib.h>
 329 # include <stddef.h>
 330 #else
 331 # ifdef HAVE_STDLIB_H
 332 #  include <stdlib.h>
 333 # endif
 334 #endif
 335 #ifdef HAVE_STRING_H
 336 # if !defined STDC_HEADERS && defined HAVE_MEMORY_H
 337 #  include <memory.h>
 338 # endif
 339 # include <string.h>
 340 #endif
 341 #ifdef HAVE_BSD_STRING_H
 342 # include <bsd/string.h>
 343 #endif
 344 #ifdef HAVE_STRINGS_H
 345 # include <strings.h>
 346 #endif
 347 #ifdef HAVE_INTTYPES_H
 348 # include <inttypes.h>
 349 #endif
 350 #ifdef HAVE_STDINT_H
 351 # include <stdint.h>
 352 #endif
 353 #ifdef HAVE_UNISTD_H
 354 # include <unistd.h>
 355 #endif
 356
 357 #ifdef HAVE_SYS_PARAM_H
 358 #include <sys/param.h>
 359 #endif
 360
 361 #if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H)
 362 #include <malloc.h>
 363 #endif
 364
 365 #ifdef HAVE_SYS_SOCKET_H
 366 #include <sys/socket.h>
 367 #endif
 368
 369 #ifdef HAVE_SYS_TIME_H
 370 #include <sys/time.h>
 371 #endif
 372 #include <time.h>
 373
 374 #ifdef HAVE_FCNTL_H
 375 #include <fcntl.h>
 376 #else
 377 #ifdef HAVE_SYS_FCNTL_H
 378 #include <sys/fcntl.h>
 379 #endif
 380 #endif
 381
 382 #ifdef HAVE_SYS_IOCTL_H
 383 #include <sys/ioctl.h>
 384 #endif
 385
 386 #ifdef HAVE_SYS_FILIO_H
 387 #include <sys/filio.h>
 388 #endif
 389
 390 #include <signal.h>
 391 #ifdef HAVE_SYS_WAIT_H
 392 #include <sys/wait.h>
 393 #endif
 394 #ifdef HAVE_CTYPE_H
 395 #include <ctype.h>
 396 #endif
 397 #ifdef HAVE_GRP_H
 398 #include <grp.h>
 399 #endif
 400 #include <errno.h>
 401
 402 #ifdef HAVE_UTIME_H
 403 #include <utime.h>
 404 #endif
 405
 406 #if defined HAVE_UTIMENSAT || defined HAVE_LUTIMES || defined HAVE_SETATTRLIST
 407 #define CAN_SET_SYMLINK_TIMES 1
 408 #endif
 409
 410 #if defined HAVE_LCHOWN || defined CHOWN_MODIFIES_SYMLINK
 411 #define CAN_CHOWN_SYMLINK 1
 412 #endif
 413
 414 #if defined HAVE_LCHMOD || defined HAVE_SETATTRLIST
 415 #define CAN_CHMOD_SYMLINK 1
 416 #endif
 417
 418 #if defined HAVE_UTIMENSAT || defined HAVE_SETATTRLIST
 419 #define CAN_SET_NSEC 1
 420 #endif
 421
 422 #ifdef CAN_SET_NSEC
 423 #ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
 424 #define ST_MTIME_NSEC st_mtim.tv_nsec
 425 #define ST_ATIME_NSEC st_atim.tv_nsec
 426 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
 427 #define ST_MTIME_NSEC st_mtimensec
 428 #define ST_ATIME_NSEC st_atimensec
 429 #elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
 430 #define ST_MTIME_NSEC st_mtimespec.tv_nsec
 431 #define ST_ATIME_NSEC st_atimespec.tv_nsec
 432 #endif
 433 #endif
 434
 435 #ifdef HAVE_SYS_SELECT_H
 436 #include <sys/select.h>
 437 #endif
 438
 439 #ifdef HAVE_SYS_MODE_H
 440 /* apparently AIX needs this for S_ISLNK */
 441 #ifndef S_ISLNK
 442 #include <sys/mode.h>
 443 #endif
 444 #endif
 445
 446 /* these are needed for the uid/gid mapping code */
 447 #include <pwd.h>
 448 #include <grp.h>
 449
 450 #include <stdarg.h>
 451 #include <netinet/in.h>
 452 #include <arpa/inet.h>
 453 #ifdef HAVE_NETDB_H
 454 #include <netdb.h>
 455 #endif
 456 #include <syslog.h>
 457 #ifdef HAVE_SYS_FILE_H
 458 #include <sys/file.h>
 459 #endif
 460
 461 #ifdef HAVE_DIRENT_H
 462 # include <dirent.h>
 463 #else
 464 # define dirent direct
 465 # ifdef HAVE_SYS_NDIR_H
 466 #  include <sys/ndir.h>
 467 # endif
 468 # ifdef HAVE_SYS_DIR_H
 469 #  include <sys/dir.h>
 470 # endif
 471 # ifdef HAVE_NDIR_H
 472 #  include <ndir.h>
 473 # endif
 474 #endif
 475
 476 #ifdef MAJOR_IN_MKDEV
 477 #include <sys/mkdev.h>
 478 # if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
 479 #  define makedev mkdev
 480 # endif
 481 #elif defined MAJOR_IN_SYSMACROS
 482 #include <sys/sysmacros.h>
 483 #endif
 484
 485 #ifdef MAKEDEV_TAKES_3_ARGS
 486 #define MAKEDEV(devmajor,devminor) makedev(0,devmajor,devminor)
 487 #else
 488 #ifndef __TANDEM
 489 #define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor)
 490 #else
 491 # define major DEV_TO_MAJOR
 492 # define minor DEV_TO_MINOR
 493 # define MAKEDEV MAJORMINOR_TO_DEV
 494 #endif
 495 #endif
 496
 497 #ifdef __TANDEM
 498 # include <floss.h(floss_read,floss_write,floss_fork,floss_execvp)>
 499 # include <floss.h(floss_getpwuid,floss_select,floss_seteuid)>
 500 # define S_IEXEC S_IXUSR
 501 # define ROOT_UID 65535
 502 #else
 503 # define ROOT_UID 0
 504 #endif
 505
 506 #ifdef HAVE_COMPAT_H
 507 #include <compat.h>
 508 #endif
 509
 510 #ifdef HAVE_LIMITS_H
 511 # include <limits.h>
 512 #endif
 513
 514 #if defined USE_ICONV_OPEN && defined HAVE_ICONV_H
 515 #include <iconv.h>
 516 #ifndef ICONV_CONST
 517 #define ICONV_CONST
 518 #endif
 519 #else
 520 #ifdef ICONV_CONST
 521 #undef ICONV_CONST
 522 #endif
 523 #ifdef ICONV_OPTION
 524 #undef ICONV_OPTION
 525 #endif
 526 #ifdef iconv_t
 527 #undef iconv_t
 528 #endif
 529 #define iconv_t int
 530 #endif
 531
 532 #include <assert.h>
 533
 534 #include "lib/pool_alloc.h"
 535
 536 #ifndef HAVE_ID_T
 537 typedef unsigned int id_t;
 538 #endif
 539 #ifndef HAVE_PID_T
 540 typedef int pid_t;
 541 #endif
 542 #ifndef HAVE_MODE_T
 543 typedef unsigned int mode_t;
 544 #endif
 545 #ifndef HAVE_OFF_T
 546 typedef long off_t;
 547 #undef SIZEOF_OFF_T
 548 #define SIZEOF_OFF_T SIZEOF_LONG
 549 #endif
 550 #ifndef HAVE_SIZE_T
 551 typedef unsigned int size_t;
 552 #endif
 553
 554 #define BOOL int
 555
 556 #ifndef uchar
 557 #define uchar unsigned char
 558 #endif
 559
 560 #ifdef SIGNED_CHAR_OK
 561 #define schar signed char
 562 #else
 563 #define schar char
 564 #endif
 565
 566 #ifndef int16
 567 #if SIZEOF_INT16_T == 2
 568 # define int16 int16_t
 569 #else
 570 # define int16 short
 571 #endif
 572 #endif
 573
 574 #ifndef uint16
 575 #if SIZEOF_UINT16_T == 2
 576 # define uint16 uint16_t
 577 #else
 578 # define uint16 unsigned int16
 579 #endif
 580 #endif
 581
 582 #if !defined __APPLE__ || defined HAVE_GETATTRLIST
 583 #define SUPPORT_ATIMES 1
 584 #endif
 585
 586 #if defined HAVE_GETATTRLIST || defined __CYGWIN__
 587 #define SUPPORT_CRTIMES 1
 588 #endif
 589
 590 /* Find a variable that is either exactly 32-bits or longer.
 591  * If some code depends on 32-bit truncation, it will need to
 592  * take special action in a "#if SIZEOF_INT32 > 4" section. */
 593 #ifndef int32
 594 #if SIZEOF_INT32_T == 4
 595 # define int32 int32_t
 596 # define SIZEOF_INT32 4
 597 #elif SIZEOF_INT == 4
 598 # define int32 int
 599 # define SIZEOF_INT32 4
 600 #elif SIZEOF_LONG == 4
 601 # define int32 long
 602 # define SIZEOF_INT32 4
 603 #elif SIZEOF_SHORT == 4
 604 # define int32 short
 605 # define SIZEOF_INT32 4
 606 #elif SIZEOF_INT > 4
 607 # define int32 int
 608 # define SIZEOF_INT32 SIZEOF_INT
 609 #elif SIZEOF_LONG > 4
 610 # define int32 long
 611 # define SIZEOF_INT32 SIZEOF_LONG
 612 #else
 613 # error Could not find a 32-bit integer variable
 614 #endif
 615 #else
 616 # define SIZEOF_INT32 4
 617 #endif
 618
 619 #ifndef uint32
 620 #if SIZEOF_UINT32_T == 4
 621 # define uint32 uint32_t
 622 #else
 623 # define uint32 unsigned int32
 624 #endif
 625 #endif
 626
 627 #if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64
 628 #define OFF_T off_t
 629 #define STRUCT_STAT struct stat
 630 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF_T
 631 #else
 632 #define OFF_T off64_t
 633 #define STRUCT_STAT struct stat64
 634 #define USE_STAT64_FUNCS 1
 635 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF64_T
 636 #endif
 637
 638 /* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF
 639  * that's the maximum size the file system can handle and there is no
 640  * 64-bit type available.  The rsync source must therefore take steps
 641  * to ensure that any code that really requires a 64-bit integer has
 642  * it (e.g. the checksum code uses two 32-bit integers for its 64-bit
 643  * counter). */
 644 #if SIZEOF_INT64_T == 8
 645 # define int64 int64_t
 646 # define SIZEOF_INT64 8
 647 #elif SIZEOF_LONG == 8
 648 # define int64 long
 649 # define SIZEOF_INT64 8
 650 #elif SIZEOF_INT == 8
 651 # define int64 int
 652 # define SIZEOF_INT64 8
 653 #elif SIZEOF_LONG_LONG == 8
 654 # define int64 long long
 655 # define SIZEOF_INT64 8
 656 #elif SIZEOF_OFF64_T == 8
 657 # define int64 off64_t
 658 # define SIZEOF_INT64 8
 659 #elif SIZEOF_OFF_T == 8
 660 # define int64 off_t
 661 # define SIZEOF_INT64 8
 662 #elif SIZEOF_INT > 8
 663 # define int64 int
 664 # define SIZEOF_INT64 SIZEOF_INT
 665 #elif SIZEOF_LONG > 8
 666 # define int64 long
 667 # define SIZEOF_INT64 SIZEOF_LONG
 668 #elif SIZEOF_LONG_LONG > 8
 669 # define int64 long long
 670 # define SIZEOF_INT64 SIZEOF_LONG_LONG
 671 #else
 672 /* As long as it gets... */
 673 # define int64 off_t
 674 # define SIZEOF_INT64 SIZEOF_OFF_T
 675 #endif
 676
 677 #define HT_KEY32 0
 678 #define HT_KEY64 1
 679
 680 struct hashtable {
 681         void *nodes;
 682         int32 size, entries;
 683         uint32 node_size;
 684         short key64;
 685 };
 686
 687 struct ht_int32_node {
 688         void *data;
 689         int32 key;
 690 };
 691
 692 struct ht_int64_node {
 693         void *data;
 694         int64 key;
 695 };
 696
 697 #define HT_NODE(tbl, bkts, i) ((void*)((char*)(bkts) + (i)*(tbl)->node_size))
 698 #define HT_KEY(node, k64) ((k64)? ((struct ht_int64_node*)(node))->key \
 699                          : (int64)((struct ht_int32_node*)(node))->key)
 700
 701 #ifndef MIN
 702 #define MIN(a,b) ((a)<(b)?(a):(b))
 703 #endif
 704
 705 #ifndef MAX
 706 #define MAX(a,b) ((a)>(b)?(a):(b))
 707 #endif
 708
 709 #ifndef MAXHOSTNAMELEN
 710 #define MAXHOSTNAMELEN 256
 711 #endif
 712
 713 #define SUM_LENGTH 16
 714 #define SHORT_SUM_LENGTH 2
 715 #define BLOCKSUM_BIAS 10
 716
 717 #ifndef MAXPATHLEN
 718 #define MAXPATHLEN 1024
 719 #endif
 720
 721 /* We want a roomy line buffer that can hold more than MAXPATHLEN,
 722  * and significantly more than an overly short MAXPATHLEN. */
 723 #if MAXPATHLEN < 4096
 724 #define BIGPATHBUFLEN (4096+1024)
 725 #else
 726 #define BIGPATHBUFLEN (MAXPATHLEN+1024)
 727 #endif
 728
 729 #ifndef NAME_MAX
 730 #define NAME_MAX 255
 731 #endif
 732
 733 #ifndef SIZE_MAX
 734 #define SIZE_MAX ((size_t)-1)
 735 #endif
 736
 737 #ifndef INADDR_NONE
 738 #define INADDR_NONE 0xffffffff
 739 #endif
 740
 741 #ifndef IN_LOOPBACKNET
 742 #define IN_LOOPBACKNET 127
 743 #endif
 744
 745 #if HAVE_UNIXWARE_ACLS|HAVE_SOLARIS_ACLS|HAVE_HPUX_ACLS
 746 #define ACLS_NEED_MASK 1
 747 #endif
 748
 749 #if defined HAVE_FALLOCATE || HAVE_SYS_FALLOCATE
 750 #ifdef HAVE_LINUX_FALLOC_H
 751 #include <linux/falloc.h>
 752 #endif
 753 #ifdef FALLOC_FL_KEEP_SIZE
 754 #define SUPPORT_PREALLOCATION 1
 755 #elif defined HAVE_FTRUNCATE
 756 #define SUPPORT_PREALLOCATION 1
 757 #define PREALLOCATE_NEEDS_TRUNCATE 1
 758 #endif
 759 #else /* !fallocate */
 760 #if defined HAVE_EFFICIENT_POSIX_FALLOCATE && defined HAVE_FTRUNCATE
 761 #define SUPPORT_PREALLOCATION 1
 762 #define PREALLOCATE_NEEDS_TRUNCATE 1
 763 #endif
 764 #endif
 765
 766 #if SIZEOF_CHARP == 4
 767 # define PTRS_ARE_32 1
 768 # define PTR_EXTRA_CNT 1
 769 #elif SIZEOF_CHARP == 8
 770 # define PTRS_ARE_64 1
 771 # define PTR_EXTRA_CNT EXTRA64_CNT
 772 #else
 773 # error Character pointers are not 4 or 8 bytes.
 774 #endif
 775
 776 #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
 777 #define USE_FLEXIBLE_ARRAY 1
 778 #define SIZE_T_FMT_MOD "z" /* printf supports %zd */
 779 #define SIZE_T_FMT_CAST size_t
 780 #else
 781 #define SIZE_T_FMT_MOD "l" /* printf supports %ld */
 782 #define SIZE_T_FMT_CAST long
 783 #endif
 784
 785 union file_extras {
 786         int32 num;
 787         uint32 unum;
 788 #ifdef PTRS_ARE_32
 789         const char* ptr;
 790 #endif
 791 };
 792
 793 union file_extras64 {
 794         int64 num;
 795 #ifdef PTRS_ARE_64
 796         const char* ptr;
 797 #endif
 798 };
 799
 800 struct file_struct {
 801         const char *dirname;    /* The dir info inside the transfer */
 802         time_t modtime;         /* When the item was last modified */
 803         uint32 len32;           /* Lowest 32 bits of the file's length */
 804         uint16 mode;            /* The item's type and permissions */
 805         uint16 flags;           /* The FLAG_* bits for this item */
 806 #ifdef USE_FLEXIBLE_ARRAY
 807         const char basename[];  /* The basename (AKA filename) follows */
 808 #else
 809         const char basename[1]; /* A kluge that should work like a flexible array */
 810 #endif
 811 };
 812
 813 extern int file_extra_cnt;
 814 extern int inc_recurse;
 815 extern int atimes_ndx;
 816 extern int crtimes_ndx;
 817 extern int pathname_ndx;
 818 extern int depth_ndx;
 819 extern int uid_ndx;
 820 extern int gid_ndx;
 821 extern int acls_ndx;
 822 extern int xattrs_ndx;
 823 extern int file_sum_extra_cnt;
 824
 825 #ifdef USE_FLEXIBLE_ARRAY
 826 #define FILE_STRUCT_LEN (sizeof (struct file_struct))
 827 #else
 828 #define FILE_STRUCT_LEN (offsetof(struct file_struct, basename))
 829 #endif
 830 #define EXTRA_LEN (sizeof (union file_extras))
 831 #define DEV_EXTRA_CNT 2
 832 #define DIRNODE_EXTRA_CNT 3
 833 #define EXTRA64_CNT ((sizeof (union file_extras64) + EXTRA_LEN - 1) / EXTRA_LEN)
 834 #define SUM_EXTRA_CNT file_sum_extra_cnt
 835
 836 #define REQ_EXTRA(f,ndx) ((union file_extras*)(f) - (ndx))
 837 #define OPT_EXTRA(f,bump) ((union file_extras*)(f) - file_extra_cnt - 1 - (bump))
 838
 839 /* These are guaranteed to be allocated first in the array so that they
 840  * are aligned for direct int64-pointer access. */
 841 #define REQ_EXTRA64(f,ndx) ((union file_extras64*)REQ_EXTRA(f,ndx))
 842
 843 #define NSEC_BUMP(f) ((f)->flags & FLAG_MOD_NSEC ? 1 : 0)
 844 #define LEN64_BUMP(f) ((f)->flags & FLAG_LENGTH64 ? 1 : 0)
 845 #define START_BUMP(f) (NSEC_BUMP(f) + LEN64_BUMP(f))
 846 #define HLINK_BUMP(f) ((f)->flags & (FLAG_HLINKED|FLAG_HLINK_DONE) ? inc_recurse+1 : 0)
 847 #define ACL_BUMP(f) (acls_ndx ? 1 : 0)
 848
 849 /* The length applies to all items. */
 850 #if SIZEOF_INT64 < 8
 851 #define F_LENGTH(f) ((int64)(f)->len32)
 852 #else
 853 #define F_HIGH_LEN(f) (OPT_EXTRA(f, NSEC_BUMP(f))->unum)
 854 #define F_LENGTH(f) ((int64)(f)->len32 + ((f)->flags & FLAG_LENGTH64 ? (int64)F_HIGH_LEN(f) << 32 : 0))
 855 #endif
 856
 857 #define F_MOD_NSEC(f) OPT_EXTRA(f, 0)->unum
 858 #define F_MOD_NSEC_or_0(f) ((f)->flags & FLAG_MOD_NSEC ? F_MOD_NSEC(f) : 0)
 859
 860 /* If there is a symlink string, it is always right after the basename */
 861 #define F_SYMLINK(f) ((f)->basename + strlen((f)->basename) + 1)
 862
 863 /* The sending side always has this available: */
 864 #ifdef PTRS_ARE_32
 865 #define F_PATHNAME(f) REQ_EXTRA(f, pathname_ndx)->ptr
 866 #else
 867 #define F_PATHNAME(f) REQ_EXTRA64(f, pathname_ndx)->ptr
 868 #endif
 869
 870 /* The receiving side always has this available: */
 871 #define F_DEPTH(f) REQ_EXTRA(f, depth_ndx)->num
 872
 873 /* When the associated option is on, all entries will have these present: */
 874 #define F_OWNER(f) REQ_EXTRA(f, uid_ndx)->unum
 875 #define F_GROUP(f) REQ_EXTRA(f, gid_ndx)->unum
 876 #define F_ACL(f) REQ_EXTRA(f, acls_ndx)->num
 877 #define F_XATTR(f) REQ_EXTRA(f, xattrs_ndx)->num
 878 #define F_NDX(f) REQ_EXTRA(f, unsort_ndx)->num
 879 #define F_ATIME(f) REQ_EXTRA64(f, atimes_ndx)->num
 880 #define F_CRTIME(f) REQ_EXTRA64(f, crtimes_ndx)->num
 881
 882 /* These items are per-entry optional: */
 883 #define F_HL_GNUM(f) OPT_EXTRA(f, START_BUMP(f))->num /* non-dirs */
 884 #define F_HL_PREV(f) OPT_EXTRA(f, START_BUMP(f)+inc_recurse)->num /* non-dirs */
 885 #define F_DIR_NODE_P(f) (&OPT_EXTRA(f, START_BUMP(f) \
 886                                 + DIRNODE_EXTRA_CNT - 1)->num) /* sender dirs */
 887 #define F_DIR_RELNAMES_P(f) (&OPT_EXTRA(f, START_BUMP(f) + DIRNODE_EXTRA_CNT \
 888                                 + PTR_EXTRA_CNT - 1)->num) /* sender dirs */
 889 #define F_DIR_DEFACL(f) OPT_EXTRA(f, START_BUMP(f))->unum /* receiver dirs */
 890 #define F_DIR_DEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + ACL_BUMP(f) \
 891                                 + DEV_EXTRA_CNT - 1)->unum) /* receiver dirs */
 892
 893 /* This optional item might follow an F_HL_*() item. */
 894 #define F_RDEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) + DEV_EXTRA_CNT - 1)->unum)
 895
 896 /* The sum is only present on regular files. */
 897 #define F_SUM(f) ((char*)OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) \
 898                                     + SUM_EXTRA_CNT - 1))
 899
 900 /* Some utility defines: */
 901 #define F_IS_ACTIVE(f) (f)->basename[0]
 902 #define F_IS_HLINKED(f) ((f)->flags & FLAG_HLINKED)
 903
 904 #define F_HLINK_NOT_FIRST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_FIRST)
 905 #define F_HLINK_NOT_LAST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_LAST)
 906
 907 /* These access the F_DIR_DEV_P() and F_RDEV_P() values: */
 908 #define DEV_MAJOR(a) (a)[0]
 909 #define DEV_MINOR(a) (a)[1]
 910
 911 /* These access the F_DIRS_NODE_P() values: */
 912 #define DIR_PARENT(a) (a)[0]
 913 #define DIR_FIRST_CHILD(a) (a)[1]
 914 #define DIR_NEXT_SIBLING(a) (a)[2]
 915
 916 #define IS_MISSING_FILE(statbuf) ((statbuf).st_mode == 0)
 917
 918 /*
 919  * Start the flist array at FLIST_START entries and grow it
 920  * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
 921  */
 922 #define FLIST_START             (32)
 923 #define FLIST_START_LARGE       (32 * 1024)
 924 #define FLIST_LINEAR            (FLIST_START_LARGE * 512)
 925
 926 /*
 927  * Extent size for allocation pools: A minimum size of 128KB
 928  * is needed to mmap them so that freeing will release the
 929  * space to the OS.
 930  *
 931  * Larger sizes reduce leftover fragments and speed free calls
 932  * (when they happen). Smaller sizes increase the chance of
 933  * freed allocations freeing whole extents.
 934  */
 935 #define NORMAL_EXTENT   (256 * 1024)
 936 #define SMALL_EXTENT    (128 * 1024)
 937
 938 #define FLIST_TEMP      (1<<1)
 939
 940 struct file_list {
 941         struct file_list *next, *prev;
 942         struct file_struct **files, **sorted;
 943         alloc_pool_t file_pool;
 944         void *pool_boundary;
 945         int used, malloced;
 946         int low, high;  /* 0-relative index values excluding empties */
 947         int ndx_start;  /* the start offset for inc_recurse mode */
 948         int flist_num;  /* 1-relative file_list number or 0 */
 949         int parent_ndx; /* dir_flist index of parent directory */
 950         int in_progress, to_redo;
 951 };
 952
 953 #define SUMFLG_SAME_OFFSET      (1<<0)
 954
 955 struct sum_buf {
 956         OFF_T offset;           /**< offset in file of this chunk */
 957         int32 len;              /**< length of chunk of file */
 958         uint32 sum1;            /**< simple checksum */
 959         int32 chain;            /**< next hash-table collision */
 960         short flags;            /**< flag bits */
 961 };
 962
 963 struct sum_struct {
 964         OFF_T flength;          /**< total file length */
 965         struct sum_buf *sums;   /**< points to info for each chunk */
 966         char *sum2_array;       /**< checksums of length xfer_sum_len */
 967         int32 count;            /**< how many chunks */
 968         int32 blength;          /**< block_length */
 969         int32 remainder;        /**< flength % block_length */
 970         int s2length;           /**< sum2_length */
 971 };
 972
 973 struct map_struct {
 974         OFF_T file_size;        /* File size (from stat)                */
 975         OFF_T p_offset;         /* Window start                         */
 976         OFF_T p_fd_offset;      /* offset of cursor in fd ala lseek     */
 977         char *p;                /* Window pointer                       */
 978         int32 p_size;           /* Largest window size we allocated     */
 979         int32 p_len;            /* Latest (rounded) window size         */
 980         int32 def_window_size;  /* Default window size                  */
 981         int fd;                 /* File Descriptor                      */
 982         int status;             /* first errno from read errors         */
 983 };
 984
 985 #define sum2_at(s, i)   ((s)->sum2_array + ((size_t)(i) * xfer_sum_len))
 986
 987 #define NAME_IS_FILE            (0)    /* filter name as a file */
 988 #define NAME_IS_DIR             (1<<0) /* filter name as a dir */
 989 #define NAME_IS_XATTR           (1<<2) /* filter name as an xattr */
 990
 991 #define FILTRULE_WILD           (1<<0) /* pattern has '*', '[', and/or '?' */
 992 #define FILTRULE_WILD2          (1<<1) /* pattern has '**' */
 993 #define FILTRULE_WILD2_PREFIX   (1<<2) /* pattern starts with "**" */
 994 #define FILTRULE_WILD3_SUFFIX   (1<<3) /* pattern ends with "***" */
 995 #define FILTRULE_ABS_PATH       (1<<4) /* path-match on absolute path */
 996 #define FILTRULE_INCLUDE        (1<<5) /* this is an include, not an exclude */
 997 #define FILTRULE_DIRECTORY      (1<<6) /* this matches only directories */
 998 #define FILTRULE_WORD_SPLIT     (1<<7) /* split rules on whitespace */
 999 #define FILTRULE_NO_INHERIT     (1<<8) /* don't inherit these rules */
1000 #define FILTRULE_NO_PREFIXES    (1<<9) /* parse no prefixes from patterns */
1001 #define FILTRULE_MERGE_FILE     (1<<10)/* specifies a file to merge */
1002 #define FILTRULE_PERDIR_MERGE   (1<<11)/* merge-file is searched per-dir */
1003 #define FILTRULE_EXCLUDE_SELF   (1<<12)/* merge-file name should be excluded */
1004 #define FILTRULE_FINISH_SETUP   (1<<13)/* per-dir merge file needs setup */
1005 #define FILTRULE_NEGATE         (1<<14)/* rule matches when pattern does not */
1006 #define FILTRULE_CVS_IGNORE     (1<<15)/* rule was -C or :C */
1007 #define FILTRULE_SENDER_SIDE    (1<<16)/* rule applies to the sending side */
1008 #define FILTRULE_RECEIVER_SIDE  (1<<17)/* rule applies to the receiving side */
1009 #define FILTRULE_CLEAR_LIST     (1<<18)/* this item is the "!" token */
1010 #define FILTRULE_PERISHABLE     (1<<19)/* perishable if parent dir goes away */
1011 #define FILTRULE_XATTR          (1<<20)/* rule only applies to xattr names */
1012
1013 #define FILTRULES_SIDES (FILTRULE_SENDER_SIDE | FILTRULE_RECEIVER_SIDE)
1014
1015 typedef struct filter_struct {
1016         struct filter_struct *next;
1017         char *pattern;
1018         uint32 rflags;
1019         union {
1020                 int slash_cnt;
1021                 struct filter_list_struct *mergelist;
1022         } u;
1023         uchar elide;
1024 } filter_rule;
1025
1026 typedef struct filter_list_struct {
1027         filter_rule *head;
1028         filter_rule *tail;
1029         char *debug_type;
1030 } filter_rule_list;
1031
1032 struct stats {
1033         int64 total_size;
1034         int64 total_transferred_size;
1035         int64 total_written;
1036         int64 total_read;
1037         int64 literal_data;
1038         int64 matched_data;
1039         int64 flist_buildtime;
1040         int64 flist_xfertime;
1041         int64 flist_size;
1042         int num_files, num_dirs, num_symlinks, num_devices, num_specials;
1043         int created_files, created_dirs, created_symlinks, created_devices, created_specials;
1044         int deleted_files, deleted_dirs, deleted_symlinks, deleted_devices, deleted_specials;
1045         int xferred_files;
1046 };
1047
1048 struct chmod_mode_struct;
1049
1050 struct flist_ndx_item {
1051         struct flist_ndx_item *next;
1052         int ndx;
1053 };
1054
1055 typedef struct {
1056         struct flist_ndx_item *head, *tail;
1057 } flist_ndx_list;
1058
1059 #define EMPTY_ITEM_LIST {NULL, 0, 0}
1060
1061 typedef struct {
1062         void *items;
1063         size_t count;
1064         size_t malloced;
1065 } item_list;
1066
1067 #define EXPAND_ITEM_LIST(lp, type, incr) \
1068         (type*)expand_item_list(lp, sizeof (type), #type, incr)
1069
1070 #define EMPTY_XBUF {NULL, 0, 0, 0}
1071
1072 typedef struct {
1073         char *buf;
1074         size_t pos;  /* pos = read pos in the buf */
1075         size_t len;  /* len = chars following pos */
1076         size_t size; /* size = total space in buf */
1077 } xbuf;
1078
1079 #define INIT_XBUF(xb, str, ln, sz) (xb).buf = (str), (xb).len = (ln), (xb).size = (sz), (xb).pos = 0
1080 #define INIT_XBUF_STRLEN(xb, str) (xb).buf = (str), (xb).len = strlen((xb).buf), (xb).size = (size_t)-1, (xb).pos = 0
1081 /* This one is used to make an output xbuf based on a char[] buffer: */
1082 #define INIT_CONST_XBUF(xb, bf) (xb).buf = (bf), (xb).size = sizeof (bf), (xb).len = (xb).pos = 0
1083
1084 #define ICB_EXPAND_OUT (1<<0)
1085 #define ICB_INCLUDE_BAD (1<<1)
1086 #define ICB_INCLUDE_INCOMPLETE (1<<2)
1087 #define ICB_CIRCULAR_OUT (1<<3)
1088 #define ICB_INIT (1<<4)
1089
1090 #define IOBUF_KEEP_BUFS 0
1091 #define IOBUF_FREE_BUFS 1
1092
1093 #define MPLX_SWITCHING IOBUF_KEEP_BUFS
1094 #define MPLX_ALL_DONE IOBUF_FREE_BUFS
1095 #define MPLX_TO_BUFFERED 2
1096
1097 #define RL_EOL_NULLS (1<<0)
1098 #define RL_DUMP_COMMENTS (1<<1)
1099 #define RL_CONVERT (1<<2)
1100
1101 typedef struct {
1102         char name_type;
1103 #ifdef USE_FLEXIBLE_ARRAY
1104         char fname[]; /* has variable size */
1105 #else
1106         char fname[1]; /* A kluge that should work like a flexible array */
1107 #endif
1108 } relnamecache;
1109
1110 #ifdef USE_FLEXIBLE_ARRAY
1111 #define RELNAMECACHE_LEN (sizeof (relnamecache))
1112 #else
1113 #define RELNAMECACHE_LEN (offsetof(relnamecache, fname))
1114 #endif
1115
1116 #include "byteorder.h"
1117 #include "lib/mdigest.h"
1118 #include "lib/wildmatch.h"
1119 #include "lib/permstring.h"
1120 #include "lib/addrinfo.h"
1121
1122 #ifndef __GNUC__
1123 #define __attribute__(x)
1124 #else
1125 # if __GNUC__ <= 2
1126 # define NORETURN
1127 # endif
1128 #endif
1129
1130 #define UNUSED(x) x __attribute__((__unused__))
1131 #ifndef NORETURN
1132 #define NORETURN __attribute__((__noreturn__))
1133 #endif
1134
1135 typedef struct {
1136     STRUCT_STAT st;
1137     time_t crtime;
1138 #ifdef SUPPORT_ACLS
1139     struct rsync_acl *acc_acl; /* access ACL */
1140     struct rsync_acl *def_acl; /* default ACL */
1141 #endif
1142 #ifdef SUPPORT_XATTRS
1143     item_list *xattr;
1144 #endif
1145 } stat_x;
1146
1147 #define ACL_READY(sx) ((sx).acc_acl != NULL)
1148 #define XATTR_READY(sx) ((sx).xattr != NULL)
1149
1150 #define CLVL_NOT_SPECIFIED INT_MIN
1151
1152 #define CPRES_AUTO (-1)
1153 #define CPRES_NONE 0
1154 #define CPRES_ZLIB 1
1155 #define CPRES_ZLIBX 2
1156 #define CPRES_LZ4 3
1157 #define CPRES_ZSTD 4
1158
1159 #define NSTR_CHECKSUM 0
1160 #define NSTR_COMPRESS 1
1161
1162 struct name_num_item {
1163         int num, flags;
1164         const char *name;
1165         struct name_num_item *main_nni;
1166 };
1167
1168 struct name_num_obj {
1169         const char *type;
1170         struct name_num_item *negotiated_nni;
1171         uchar *saw;
1172         int saw_len;
1173         struct name_num_item *list;
1174 };
1175
1176 #ifdef EXTERNAL_ZLIB
1177 #define read_buf read_buf_
1178 #endif
1179
1180 #ifndef __cplusplus
1181 #include "proto.h"
1182 #endif
1183
1184 #ifndef SUPPORT_XATTRS
1185 #define x_stat(fn,fst,xst) do_stat(fn,fst)
1186 #define x_lstat(fn,fst,xst) do_lstat(fn,fst)
1187 #define x_fstat(fd,fst,xst) do_fstat(fd,fst)
1188 #endif
1189
1190 /* We have replacement versions of these if they're missing. */
1191 #ifndef HAVE_ASPRINTF
1192 int asprintf(char **ptr, const char *format, ...);
1193 #endif
1194
1195 #ifndef HAVE_VASPRINTF
1196 int vasprintf(char **ptr, const char *format, va_list ap);
1197 #endif
1198
1199 #if !defined HAVE_VSNPRINTF || !defined HAVE_C99_VSNPRINTF
1200 #define vsnprintf rsync_vsnprintf
1201 int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1202 #endif
1203
1204 #if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF
1205 #define snprintf rsync_snprintf
1206 int snprintf(char *str, size_t count, const char *fmt,...);
1207 #endif
1208
1209 #ifndef HAVE_STRERROR
1210 extern char *sys_errlist[];
1211 #define strerror(i) sys_errlist[i]
1212 #endif
1213
1214 #ifndef HAVE_STRCHR
1215 # define strchr                 index
1216 # define strrchr                rindex
1217 #endif
1218
1219 #ifndef HAVE_ERRNO_DECL
1220 extern int errno;
1221 #endif
1222
1223 #ifdef HAVE_READLINK
1224 #define SUPPORT_LINKS 1
1225 #if !defined NO_SYMLINK_XATTRS && !defined NO_SYMLINK_USER_XATTRS
1226 #define do_readlink(path, buf, bufsiz) readlink(path, buf, bufsiz)
1227 #endif
1228 #endif
1229 #ifdef HAVE_LINK
1230 #define SUPPORT_HARD_LINKS 1
1231 #endif
1232
1233 #ifdef HAVE_SIGACTION
1234 #define SIGACTION(n,h) sigact.sa_handler=(h), sigaction((n),&sigact,NULL)
1235 #define signal(n,h) we_need_to_call_SIGACTION_not_signal(n,h)
1236 #else
1237 #define SIGACTION(n,h) signal(n,h)
1238 #endif
1239
1240 #ifndef EWOULDBLOCK
1241 #define EWOULDBLOCK EAGAIN
1242 #endif
1243
1244 #ifndef STDIN_FILENO
1245 #define STDIN_FILENO 0
1246 #endif
1247
1248 #ifndef STDOUT_FILENO
1249 #define STDOUT_FILENO 1
1250 #endif
1251
1252 #ifndef STDERR_FILENO
1253 #define STDERR_FILENO 2
1254 #endif
1255
1256 #ifndef S_IRUSR
1257 #define S_IRUSR 0400
1258 #endif
1259
1260 #ifndef S_IWUSR
1261 #define S_IWUSR 0200
1262 #endif
1263
1264 #ifndef ACCESSPERMS
1265 #define ACCESSPERMS 0777
1266 #endif
1267
1268 #ifndef S_ISVTX
1269 #define S_ISVTX 0
1270 #endif
1271
1272 #define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
1273
1274 #ifndef _S_IFMT
1275 #define _S_IFMT        0170000
1276 #endif
1277
1278 #ifndef _S_IFLNK
1279 #define _S_IFLNK  0120000
1280 #endif
1281
1282 #ifndef S_ISLNK
1283 #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
1284 #endif
1285
1286 #ifndef S_ISBLK
1287 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
1288 #endif
1289
1290 #ifndef S_ISCHR
1291 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
1292 #endif
1293
1294 #ifndef S_ISSOCK
1295 #ifdef _S_IFSOCK
1296 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
1297 #else
1298 #define S_ISSOCK(mode) (0)
1299 #endif
1300 #endif
1301
1302 #ifndef S_ISFIFO
1303 #ifdef _S_IFIFO
1304 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
1305 #else
1306 #define S_ISFIFO(mode) (0)
1307 #endif
1308 #endif
1309
1310 #ifndef S_ISDIR
1311 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
1312 #endif
1313
1314 #ifndef S_ISREG
1315 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
1316 #endif
1317
1318 /* work out what fcntl flag to use for non-blocking */
1319 #ifdef O_NONBLOCK
1320 # define NONBLOCK_FLAG O_NONBLOCK
1321 #elif defined SYSV
1322 # define NONBLOCK_FLAG O_NDELAY
1323 #else
1324 # define NONBLOCK_FLAG FNDELAY
1325 #endif
1326
1327 #ifndef INADDR_LOOPBACK
1328 #define INADDR_LOOPBACK 0x7f000001
1329 #endif
1330
1331 #ifndef INADDR_NONE
1332 #define INADDR_NONE 0xffffffff
1333 #endif
1334
1335 #define IS_SPECIAL(mode) (S_ISSOCK(mode) || S_ISFIFO(mode))
1336 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode))
1337
1338 /* Initial mask on permissions given to temporary files.  Mask off setuid
1339      bits and group access because of potential race-condition security
1340      holes, and mask other access because mode 707 is bizarre */
1341 #define INITACCESSPERMS 0700
1342
1343 /* handler for null strings in printf format */
1344 #define NS(s) ((s)?(s):"<NULL>")
1345
1346 extern char *do_calloc;
1347
1348 /* Convenient wrappers for malloc and realloc.  Use them. */
1349 #define new(type) ((type*)my_alloc(NULL, sizeof (type), 1, __FILE__, __LINE__))
1350 #define new0(type) ((type*)my_alloc(do_calloc, sizeof (type), 1, __FILE__, __LINE__))
1351 #define realloc_buf(ptr, num) my_alloc((ptr), (num), 1, __FILE__, __LINE__)
1352
1353 #define new_array(type, num) ((type*)my_alloc(NULL, (num), sizeof (type), __FILE__, __LINE__))
1354 #define new_array0(type, num) ((type*)my_alloc(do_calloc, (num), sizeof (type), __FILE__, __LINE__))
1355 #define realloc_array(ptr, type, num) ((type*)my_alloc((ptr), (num), sizeof (type), __FILE__, __LINE__))
1356
1357 #undef strdup
1358 #define strdup(s) my_strdup(s, __FILE__, __LINE__)
1359
1360 #define out_of_memory(msg) _out_of_memory(msg, __FILE__, __LINE__)
1361 #define overflow_exit(msg) _overflow_exit(msg, __FILE__, __LINE__)
1362
1363 /* use magic gcc attributes to catch format errors */
1364  void rprintf(enum logcode , const char *, ...)
1365      __attribute__((format (printf, 2, 3)))
1366 ;
1367
1368 /* This is just like rprintf, but it also tries to print some
1369  * representation of the error code.  Normally errcode = errno. */
1370 void rsyserr(enum logcode, int, const char *, ...)
1371      __attribute__((format (printf, 3, 4)))
1372      ;
1373
1374 /* Make sure that the O_BINARY flag is defined. */
1375 #ifndef O_BINARY
1376 #define O_BINARY 0
1377 #endif
1378
1379 #ifndef HAVE_STRLCPY
1380 size_t strlcpy(char *d, const char *s, size_t bufsize);
1381 #endif
1382
1383 #ifndef HAVE_STRLCAT
1384 size_t strlcat(char *d, const char *s, size_t bufsize);
1385 #endif
1386
1387 #ifndef WEXITSTATUS
1388 #define WEXITSTATUS(stat)       ((int)(((stat)>>8)&0xFF))
1389 #endif
1390 #ifndef WIFEXITED
1391 #define WIFEXITED(stat)         ((int)((stat)&0xFF) == 0)
1392 #endif
1393
1394 #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
1395
1396 #ifdef HAVE_GETEUID
1397 #define MY_UID() geteuid()
1398 #else
1399 #define MY_UID() getuid()
1400 #endif
1401
1402 #ifdef HAVE_GETEGID
1403 #define MY_GID() getegid()
1404 #else
1405 #define MY_GID() getgid()
1406 #endif
1407
1408 #ifdef FORCE_FD_ZERO_MEMSET
1409 #undef FD_ZERO
1410 #define FD_ZERO(fdsetp) memset(fdsetp, 0, sizeof (fd_set))
1411 #endif
1412
1413 extern short info_levels[], debug_levels[];
1414
1415 #define INFO_GTE(flag, lvl) (info_levels[INFO_##flag] >= (lvl))
1416 #define INFO_EQ(flag, lvl) (info_levels[INFO_##flag] == (lvl))
1417 #define DEBUG_GTE(flag, lvl) (debug_levels[DEBUG_##flag] >= (lvl))
1418 #define DEBUG_EQ(flag, lvl) (debug_levels[DEBUG_##flag] == (lvl))
1419
1420 #define INFO_BACKUP 0
1421 #define INFO_COPY (INFO_BACKUP+1)
1422 #define INFO_DEL (INFO_COPY+1)
1423 #define INFO_FLIST (INFO_DEL+1)
1424 #define INFO_MISC (INFO_FLIST+1)
1425 #define INFO_MOUNT (INFO_MISC+1)
1426 #define INFO_NAME (INFO_MOUNT+1)
1427 #define INFO_NONREG (INFO_NAME+1)
1428 #define INFO_PROGRESS (INFO_NONREG+1)
1429 #define INFO_REMOVE (INFO_PROGRESS+1)
1430 #define INFO_SKIP (INFO_REMOVE+1)
1431 #define INFO_STATS (INFO_SKIP+1)
1432 #define INFO_SYMSAFE (INFO_STATS+1)
1433
1434 #define COUNT_INFO (INFO_SYMSAFE+1)
1435
1436 #define DEBUG_ACL 0
1437 #define DEBUG_BACKUP (DEBUG_ACL+1)
1438 #define DEBUG_BIND (DEBUG_BACKUP+1)
1439 #define DEBUG_CHDIR (DEBUG_BIND+1)
1440 #define DEBUG_CONNECT (DEBUG_CHDIR+1)
1441 #define DEBUG_CMD (DEBUG_CONNECT+1)
1442 #define DEBUG_DEL (DEBUG_CMD+1)
1443 #define DEBUG_DELTASUM (DEBUG_DEL+1)
1444 #define DEBUG_DUP (DEBUG_DELTASUM+1)
1445 #define DEBUG_EXIT (DEBUG_DUP+1)
1446 #define DEBUG_FILTER (DEBUG_EXIT+1)
1447 #define DEBUG_FLIST (DEBUG_FILTER+1)
1448 #define DEBUG_FUZZY (DEBUG_FLIST+1)
1449 #define DEBUG_GENR (DEBUG_FUZZY+1)
1450 #define DEBUG_HASH (DEBUG_GENR+1)
1451 #define DEBUG_HLINK (DEBUG_HASH+1)
1452 #define DEBUG_ICONV (DEBUG_HLINK+1)
1453 #define DEBUG_IO (DEBUG_ICONV+1)
1454 #define DEBUG_NSTR (DEBUG_IO+1)
1455 #define DEBUG_OWN (DEBUG_NSTR+1)
1456 #define DEBUG_PROTO (DEBUG_OWN+1)
1457 #define DEBUG_RECV (DEBUG_PROTO+1)
1458 #define DEBUG_SEND (DEBUG_RECV+1)
1459 #define DEBUG_TIME (DEBUG_SEND+1)
1460
1461 #define COUNT_DEBUG (DEBUG_TIME+1)
1462
1463 #ifndef HAVE_INET_NTOP
1464 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
1465 #endif
1466
1467 #ifndef HAVE_INET_PTON
1468 int inet_pton(int af, const char *src, void *dst);
1469 #endif
1470
1471 #ifndef HAVE_GETPASS
1472 char *getpass(const char *prompt);
1473 #endif
1474
1475 #ifdef MAINTAINER_MODE
1476 const char *get_panic_action(void);
1477 #endif
1478
1479 #define NOISY_DEATH(msg) do { \
1480     fprintf(stderr, "%s in %s at line %d\n", msg, __FILE__, __LINE__); \
1481     exit_cleanup(RERR_UNSUPPORTED); \
1482 } while (0)
1483
1484 #ifdef HAVE_MALLINFO2
1485 #define MEM_ALLOC_INFO mallinfo2
1486 #elif defined HAVE_MALLINFO
1487 #define MEM_ALLOC_INFO mallinfo
1488 #endif