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 TIME_WITH_SYS_TIME
 370 #include <sys/time.h>
 371 #include <time.h>
 372 #else
 373 #ifdef HAVE_SYS_TIME_H
 374 #include <sys/time.h>
 375 #else
 376 #include <time.h>
 377 #endif
 378 #endif
 379
 380 #ifdef HAVE_FCNTL_H
 381 #include <fcntl.h>
 382 #else
 383 #ifdef HAVE_SYS_FCNTL_H
 384 #include <sys/fcntl.h>
 385 #endif
 386 #endif
 387
 388 #ifdef HAVE_SYS_IOCTL_H
 389 #include <sys/ioctl.h>
 390 #endif
 391
 392 #ifdef HAVE_SYS_FILIO_H
 393 #include <sys/filio.h>
 394 #endif
 395
 396 #include <signal.h>
 397 #ifdef HAVE_SYS_WAIT_H
 398 #include <sys/wait.h>
 399 #endif
 400 #ifdef HAVE_CTYPE_H
 401 #include <ctype.h>
 402 #endif
 403 #ifdef HAVE_GRP_H
 404 #include <grp.h>
 405 #endif
 406 #include <errno.h>
 407
 408 #ifdef HAVE_UTIME_H
 409 #include <utime.h>
 410 #endif
 411
 412 #if defined HAVE_UTIMENSAT || defined HAVE_LUTIMES || defined HAVE_SETATTRLIST
 413 #define CAN_SET_SYMLINK_TIMES 1
 414 #endif
 415
 416 #if defined HAVE_LCHOWN || defined CHOWN_MODIFIES_SYMLINK
 417 #define CAN_CHOWN_SYMLINK 1
 418 #endif
 419
 420 #if defined HAVE_LCHMOD || defined HAVE_SETATTRLIST
 421 #define CAN_CHMOD_SYMLINK 1
 422 #endif
 423
 424 #if defined HAVE_UTIMENSAT || defined HAVE_SETATTRLIST
 425 #define CAN_SET_NSEC 1
 426 #endif
 427
 428 #ifdef CAN_SET_NSEC
 429 #ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
 430 #define ST_MTIME_NSEC st_mtim.tv_nsec
 431 #define ST_ATIME_NSEC st_atim.tv_nsec
 432 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
 433 #define ST_MTIME_NSEC st_mtimensec
 434 #define ST_ATIME_NSEC st_atimensec
 435 #elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
 436 #define ST_MTIME_NSEC st_mtimespec.tv_nsec
 437 #define ST_ATIME_NSEC st_atimespec.tv_nsec
 438 #endif
 439 #endif
 440
 441 #ifdef HAVE_SYS_SELECT_H
 442 #include <sys/select.h>
 443 #endif
 444
 445 #ifdef HAVE_SYS_MODE_H
 446 /* apparently AIX needs this for S_ISLNK */
 447 #ifndef S_ISLNK
 448 #include <sys/mode.h>
 449 #endif
 450 #endif
 451
 452 /* these are needed for the uid/gid mapping code */
 453 #include <pwd.h>
 454 #include <grp.h>
 455
 456 #include <stdarg.h>
 457 #include <netinet/in.h>
 458 #include <arpa/inet.h>
 459 #ifdef HAVE_NETDB_H
 460 #include <netdb.h>
 461 #endif
 462 #include <syslog.h>
 463 #ifdef HAVE_SYS_FILE_H
 464 #include <sys/file.h>
 465 #endif
 466
 467 #ifdef HAVE_DIRENT_H
 468 # include <dirent.h>
 469 #else
 470 # define dirent direct
 471 # ifdef HAVE_SYS_NDIR_H
 472 #  include <sys/ndir.h>
 473 # endif
 474 # ifdef HAVE_SYS_DIR_H
 475 #  include <sys/dir.h>
 476 # endif
 477 # ifdef HAVE_NDIR_H
 478 #  include <ndir.h>
 479 # endif
 480 #endif
 481
 482 #ifdef MAJOR_IN_MKDEV
 483 #include <sys/mkdev.h>
 484 # if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
 485 #  define makedev mkdev
 486 # endif
 487 #elif defined MAJOR_IN_SYSMACROS
 488 #include <sys/sysmacros.h>
 489 #endif
 490
 491 #ifdef MAKEDEV_TAKES_3_ARGS
 492 #define MAKEDEV(devmajor,devminor) makedev(0,devmajor,devminor)
 493 #else
 494 #ifndef __TANDEM
 495 #define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor)
 496 #else
 497 # define major DEV_TO_MAJOR
 498 # define minor DEV_TO_MINOR
 499 # define MAKEDEV MAJORMINOR_TO_DEV
 500 #endif
 501 #endif
 502
 503 #ifdef __TANDEM
 504 # include <floss.h(floss_read,floss_write,floss_fork,floss_execvp)>
 505 # include <floss.h(floss_getpwuid,floss_select,floss_seteuid)>
 506 # define S_IEXEC S_IXUSR
 507 # define ROOT_UID 65535
 508 #else
 509 # define ROOT_UID 0
 510 #endif
 511
 512 #ifdef HAVE_COMPAT_H
 513 #include <compat.h>
 514 #endif
 515
 516 #ifdef HAVE_LIMITS_H
 517 # include <limits.h>
 518 #endif
 519
 520 #if defined USE_ICONV_OPEN && defined HAVE_ICONV_H
 521 #include <iconv.h>
 522 #ifndef ICONV_CONST
 523 #define ICONV_CONST
 524 #endif
 525 #else
 526 #ifdef ICONV_CONST
 527 #undef ICONV_CONST
 528 #endif
 529 #ifdef ICONV_OPTION
 530 #undef ICONV_OPTION
 531 #endif
 532 #ifdef iconv_t
 533 #undef iconv_t
 534 #endif
 535 #define iconv_t int
 536 #endif
 537
 538 #include <assert.h>
 539
 540 #include "lib/pool_alloc.h"
 541
 542 #ifndef HAVE_ID_T
 543 typedef unsigned int id_t;
 544 #endif
 545 #ifndef HAVE_PID_T
 546 typedef int pid_t;
 547 #endif
 548 #ifndef HAVE_MODE_T
 549 typedef unsigned int mode_t;
 550 #endif
 551 #ifndef HAVE_OFF_T
 552 typedef long off_t;
 553 #undef SIZEOF_OFF_T
 554 #define SIZEOF_OFF_T SIZEOF_LONG
 555 #endif
 556 #ifndef HAVE_SIZE_T
 557 typedef unsigned int size_t;
 558 #endif
 559
 560 #define BOOL int
 561
 562 #ifndef uchar
 563 #define uchar unsigned char
 564 #endif
 565
 566 #ifdef SIGNED_CHAR_OK
 567 #define schar signed char
 568 #else
 569 #define schar char
 570 #endif
 571
 572 #ifndef int16
 573 #if SIZEOF_INT16_T == 2
 574 # define int16 int16_t
 575 #else
 576 # define int16 short
 577 #endif
 578 #endif
 579
 580 #ifndef uint16
 581 #if SIZEOF_UINT16_T == 2
 582 # define uint16 uint16_t
 583 #else
 584 # define uint16 unsigned int16
 585 #endif
 586 #endif
 587
 588 #if !defined __APPLE__ || defined HAVE_GETATTRLIST
 589 #define SUPPORT_ATIMES 1
 590 #endif
 591
 592 #if defined HAVE_GETATTRLIST || defined __CYGWIN__
 593 #define SUPPORT_CRTIMES 1
 594 #endif
 595
 596 /* Find a variable that is either exactly 32-bits or longer.
 597  * If some code depends on 32-bit truncation, it will need to
 598  * take special action in a "#if SIZEOF_INT32 > 4" section. */
 599 #ifndef int32
 600 #if SIZEOF_INT32_T == 4
 601 # define int32 int32_t
 602 # define SIZEOF_INT32 4
 603 #elif SIZEOF_INT == 4
 604 # define int32 int
 605 # define SIZEOF_INT32 4
 606 #elif SIZEOF_LONG == 4
 607 # define int32 long
 608 # define SIZEOF_INT32 4
 609 #elif SIZEOF_SHORT == 4
 610 # define int32 short
 611 # define SIZEOF_INT32 4
 612 #elif SIZEOF_INT > 4
 613 # define int32 int
 614 # define SIZEOF_INT32 SIZEOF_INT
 615 #elif SIZEOF_LONG > 4
 616 # define int32 long
 617 # define SIZEOF_INT32 SIZEOF_LONG
 618 #else
 619 # error Could not find a 32-bit integer variable
 620 #endif
 621 #else
 622 # define SIZEOF_INT32 4
 623 #endif
 624
 625 #ifndef uint32
 626 #if SIZEOF_UINT32_T == 4
 627 # define uint32 uint32_t
 628 #else
 629 # define uint32 unsigned int32
 630 #endif
 631 #endif
 632
 633 #if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64
 634 #define OFF_T off_t
 635 #define STRUCT_STAT struct stat
 636 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF_T
 637 #else
 638 #define OFF_T off64_t
 639 #define STRUCT_STAT struct stat64
 640 #define USE_STAT64_FUNCS 1
 641 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF64_T
 642 #endif
 643
 644 /* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF
 645  * that's the maximum size the file system can handle and there is no
 646  * 64-bit type available.  The rsync source must therefore take steps
 647  * to ensure that any code that really requires a 64-bit integer has
 648  * it (e.g. the checksum code uses two 32-bit integers for its 64-bit
 649  * counter). */
 650 #if SIZEOF_INT64_T == 8
 651 # define int64 int64_t
 652 # define SIZEOF_INT64 8
 653 #elif SIZEOF_LONG == 8
 654 # define int64 long
 655 # define SIZEOF_INT64 8
 656 #elif SIZEOF_INT == 8
 657 # define int64 int
 658 # define SIZEOF_INT64 8
 659 #elif SIZEOF_LONG_LONG == 8
 660 # define int64 long long
 661 # define SIZEOF_INT64 8
 662 #elif SIZEOF_OFF64_T == 8
 663 # define int64 off64_t
 664 # define SIZEOF_INT64 8
 665 #elif SIZEOF_OFF_T == 8
 666 # define int64 off_t
 667 # define SIZEOF_INT64 8
 668 #elif SIZEOF_INT > 8
 669 # define int64 int
 670 # define SIZEOF_INT64 SIZEOF_INT
 671 #elif SIZEOF_LONG > 8
 672 # define int64 long
 673 # define SIZEOF_INT64 SIZEOF_LONG
 674 #elif SIZEOF_LONG_LONG > 8
 675 # define int64 long long
 676 # define SIZEOF_INT64 SIZEOF_LONG_LONG
 677 #else
 678 /* As long as it gets... */
 679 # define int64 off_t
 680 # define SIZEOF_INT64 SIZEOF_OFF_T
 681 #endif
 682
 683 #define HT_KEY32 0
 684 #define HT_KEY64 1
 685
 686 struct hashtable {
 687         void *nodes;
 688         int32 size, entries;
 689         uint32 node_size;
 690         short key64;
 691 };
 692
 693 struct ht_int32_node {
 694         void *data;
 695         int32 key;
 696 };
 697
 698 struct ht_int64_node {
 699         void *data;
 700         int64 key;
 701 };
 702
 703 #define HT_NODE(tbl, bkts, i) ((void*)((char*)(bkts) + (i)*(tbl)->node_size))
 704 #define HT_KEY(node, k64) ((k64)? ((struct ht_int64_node*)(node))->key \
 705                          : (int64)((struct ht_int32_node*)(node))->key)
 706
 707 #ifndef MIN
 708 #define MIN(a,b) ((a)<(b)?(a):(b))
 709 #endif
 710
 711 #ifndef MAX
 712 #define MAX(a,b) ((a)>(b)?(a):(b))
 713 #endif
 714
 715 #ifndef MAXHOSTNAMELEN
 716 #define MAXHOSTNAMELEN 256
 717 #endif
 718
 719 #define SUM_LENGTH 16
 720 #define SHORT_SUM_LENGTH 2
 721 #define BLOCKSUM_BIAS 10
 722
 723 #ifndef MAXPATHLEN
 724 #define MAXPATHLEN 1024
 725 #endif
 726
 727 /* We want a roomy line buffer that can hold more than MAXPATHLEN,
 728  * and significantly more than an overly short MAXPATHLEN. */
 729 #if MAXPATHLEN < 4096
 730 #define BIGPATHBUFLEN (4096+1024)
 731 #else
 732 #define BIGPATHBUFLEN (MAXPATHLEN+1024)
 733 #endif
 734
 735 #ifndef NAME_MAX
 736 #define NAME_MAX 255
 737 #endif
 738
 739 #ifndef SIZE_MAX
 740 #define SIZE_MAX ((size_t)-1)
 741 #endif
 742
 743 #ifndef INADDR_NONE
 744 #define INADDR_NONE 0xffffffff
 745 #endif
 746
 747 #ifndef IN_LOOPBACKNET
 748 #define IN_LOOPBACKNET 127
 749 #endif
 750
 751 #if HAVE_UNIXWARE_ACLS|HAVE_SOLARIS_ACLS|HAVE_HPUX_ACLS
 752 #define ACLS_NEED_MASK 1
 753 #endif
 754
 755 #if defined HAVE_FALLOCATE || HAVE_SYS_FALLOCATE
 756 #ifdef HAVE_LINUX_FALLOC_H
 757 #include <linux/falloc.h>
 758 #endif
 759 #ifdef FALLOC_FL_KEEP_SIZE
 760 #define SUPPORT_PREALLOCATION 1
 761 #elif defined HAVE_FTRUNCATE
 762 #define SUPPORT_PREALLOCATION 1
 763 #define PREALLOCATE_NEEDS_TRUNCATE 1
 764 #endif
 765 #else /* !fallocate */
 766 #if defined HAVE_EFFICIENT_POSIX_FALLOCATE && defined HAVE_FTRUNCATE
 767 #define SUPPORT_PREALLOCATION 1
 768 #define PREALLOCATE_NEEDS_TRUNCATE 1
 769 #endif
 770 #endif
 771
 772 #if SIZEOF_CHARP == 4
 773 # define PTRS_ARE_32 1
 774 # define PTR_EXTRA_CNT 1
 775 #elif SIZEOF_CHARP == 8
 776 # define PTRS_ARE_64 1
 777 # define PTR_EXTRA_CNT EXTRA64_CNT
 778 #else
 779 # error Character pointers are not 4 or 8 bytes.
 780 #endif
 781
 782 #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
 783 #define USE_FLEXIBLE_ARRAY 1
 784 #define SIZE_T_FMT_MOD "z" /* printf supports %zd */
 785 #define SIZE_T_FMT_CAST size_t
 786 #else
 787 #define SIZE_T_FMT_MOD "l" /* printf supports %ld */
 788 #define SIZE_T_FMT_CAST long
 789 #endif
 790
 791 union file_extras {
 792         int32 num;
 793         uint32 unum;
 794 #ifdef PTRS_ARE_32
 795         const char* ptr;
 796 #endif
 797 };
 798
 799 union file_extras64 {
 800         int64 num;
 801 #ifdef PTRS_ARE_64
 802         const char* ptr;
 803 #endif
 804 };
 805
 806 struct file_struct {
 807         const char *dirname;    /* The dir info inside the transfer */
 808         time_t modtime;         /* When the item was last modified */
 809         uint32 len32;           /* Lowest 32 bits of the file's length */
 810         uint16 mode;            /* The item's type and permissions */
 811         uint16 flags;           /* The FLAG_* bits for this item */
 812 #ifdef USE_FLEXIBLE_ARRAY
 813         const char basename[];  /* The basename (AKA filename) follows */
 814 #else
 815         const char basename[1]; /* A kluge that should work like a flexible array */
 816 #endif
 817 };
 818
 819 extern int file_extra_cnt;
 820 extern int inc_recurse;
 821 extern int atimes_ndx;
 822 extern int crtimes_ndx;
 823 extern int pathname_ndx;
 824 extern int depth_ndx;
 825 extern int uid_ndx;
 826 extern int gid_ndx;
 827 extern int acls_ndx;
 828 extern int xattrs_ndx;
 829 extern int file_sum_extra_cnt;
 830
 831 #ifdef USE_FLEXIBLE_ARRAY
 832 #define FILE_STRUCT_LEN (sizeof (struct file_struct))
 833 #else
 834 #define FILE_STRUCT_LEN (offsetof(struct file_struct, basename))
 835 #endif
 836 #define EXTRA_LEN (sizeof (union file_extras))
 837 #define DEV_EXTRA_CNT 2
 838 #define DIRNODE_EXTRA_CNT 3
 839 #define EXTRA64_CNT ((sizeof (union file_extras64) + EXTRA_LEN - 1) / EXTRA_LEN)
 840 #define SUM_EXTRA_CNT file_sum_extra_cnt
 841
 842 #define REQ_EXTRA(f,ndx) ((union file_extras*)(f) - (ndx))
 843 #define OPT_EXTRA(f,bump) ((union file_extras*)(f) - file_extra_cnt - 1 - (bump))
 844
 845 /* These are guaranteed to be allocated first in the array so that they
 846  * are aligned for direct int64-pointer access. */
 847 #define REQ_EXTRA64(f,ndx) ((union file_extras64*)REQ_EXTRA(f,ndx))
 848
 849 #define NSEC_BUMP(f) ((f)->flags & FLAG_MOD_NSEC ? 1 : 0)
 850 #define LEN64_BUMP(f) ((f)->flags & FLAG_LENGTH64 ? 1 : 0)
 851 #define START_BUMP(f) (NSEC_BUMP(f) + LEN64_BUMP(f))
 852 #define HLINK_BUMP(f) ((f)->flags & (FLAG_HLINKED|FLAG_HLINK_DONE) ? inc_recurse+1 : 0)
 853 #define ACL_BUMP(f) (acls_ndx ? 1 : 0)
 854
 855 /* The length applies to all items. */
 856 #if SIZEOF_INT64 < 8
 857 #define F_LENGTH(f) ((int64)(f)->len32)
 858 #else
 859 #define F_HIGH_LEN(f) (OPT_EXTRA(f, NSEC_BUMP(f))->unum)
 860 #define F_LENGTH(f) ((int64)(f)->len32 + ((f)->flags & FLAG_LENGTH64 ? (int64)F_HIGH_LEN(f) << 32 : 0))
 861 #endif
 862
 863 #define F_MOD_NSEC(f) OPT_EXTRA(f, 0)->unum
 864 #define F_MOD_NSEC_or_0(f) ((f)->flags & FLAG_MOD_NSEC ? F_MOD_NSEC(f) : 0)
 865
 866 /* If there is a symlink string, it is always right after the basename */
 867 #define F_SYMLINK(f) ((f)->basename + strlen((f)->basename) + 1)
 868
 869 /* The sending side always has this available: */
 870 #ifdef PTRS_ARE_32
 871 #define F_PATHNAME(f) REQ_EXTRA(f, pathname_ndx)->ptr
 872 #else
 873 #define F_PATHNAME(f) REQ_EXTRA64(f, pathname_ndx)->ptr
 874 #endif
 875
 876 /* The receiving side always has this available: */
 877 #define F_DEPTH(f) REQ_EXTRA(f, depth_ndx)->num
 878
 879 /* When the associated option is on, all entries will have these present: */
 880 #define F_OWNER(f) REQ_EXTRA(f, uid_ndx)->unum
 881 #define F_GROUP(f) REQ_EXTRA(f, gid_ndx)->unum
 882 #define F_ACL(f) REQ_EXTRA(f, acls_ndx)->num
 883 #define F_XATTR(f) REQ_EXTRA(f, xattrs_ndx)->num
 884 #define F_NDX(f) REQ_EXTRA(f, unsort_ndx)->num
 885 #define F_ATIME(f) REQ_EXTRA64(f, atimes_ndx)->num
 886 #define F_CRTIME(f) REQ_EXTRA64(f, crtimes_ndx)->num
 887
 888 /* These items are per-entry optional: */
 889 #define F_HL_GNUM(f) OPT_EXTRA(f, START_BUMP(f))->num /* non-dirs */
 890 #define F_HL_PREV(f) OPT_EXTRA(f, START_BUMP(f)+inc_recurse)->num /* non-dirs */
 891 #define F_DIR_NODE_P(f) (&OPT_EXTRA(f, START_BUMP(f) \
 892                                 + DIRNODE_EXTRA_CNT - 1)->num) /* sender dirs */
 893 #define F_DIR_RELNAMES_P(f) (&OPT_EXTRA(f, START_BUMP(f) + DIRNODE_EXTRA_CNT \
 894                                 + PTR_EXTRA_CNT - 1)->num) /* sender dirs */
 895 #define F_DIR_DEFACL(f) OPT_EXTRA(f, START_BUMP(f))->unum /* receiver dirs */
 896 #define F_DIR_DEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + ACL_BUMP(f) \
 897                                 + DEV_EXTRA_CNT - 1)->unum) /* receiver dirs */
 898
 899 /* This optional item might follow an F_HL_*() item. */
 900 #define F_RDEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) + DEV_EXTRA_CNT - 1)->unum)
 901
 902 /* The sum is only present on regular files. */
 903 #define F_SUM(f) ((char*)OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) \
 904                                     + SUM_EXTRA_CNT - 1))
 905
 906 /* Some utility defines: */
 907 #define F_IS_ACTIVE(f) (f)->basename[0]
 908 #define F_IS_HLINKED(f) ((f)->flags & FLAG_HLINKED)
 909
 910 #define F_HLINK_NOT_FIRST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_FIRST)
 911 #define F_HLINK_NOT_LAST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_LAST)
 912
 913 /* These access the F_DIR_DEV_P() and F_RDEV_P() values: */
 914 #define DEV_MAJOR(a) (a)[0]
 915 #define DEV_MINOR(a) (a)[1]
 916
 917 /* These access the F_DIRS_NODE_P() values: */
 918 #define DIR_PARENT(a) (a)[0]
 919 #define DIR_FIRST_CHILD(a) (a)[1]
 920 #define DIR_NEXT_SIBLING(a) (a)[2]
 921
 922 #define IS_MISSING_FILE(statbuf) ((statbuf).st_mode == 0)
 923
 924 /*
 925  * Start the flist array at FLIST_START entries and grow it
 926  * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
 927  */
 928 #define FLIST_START             (32)
 929 #define FLIST_START_LARGE       (32 * 1024)
 930 #define FLIST_LINEAR            (FLIST_START_LARGE * 512)
 931
 932 /*
 933  * Extent size for allocation pools: A minimum size of 128KB
 934  * is needed to mmap them so that freeing will release the
 935  * space to the OS.
 936  *
 937  * Larger sizes reduce leftover fragments and speed free calls
 938  * (when they happen). Smaller sizes increase the chance of
 939  * freed allocations freeing whole extents.
 940  */
 941 #define NORMAL_EXTENT   (256 * 1024)
 942 #define SMALL_EXTENT    (128 * 1024)
 943
 944 #define FLIST_TEMP      (1<<1)
 945
 946 struct file_list {
 947         struct file_list *next, *prev;
 948         struct file_struct **files, **sorted;
 949         alloc_pool_t file_pool;
 950         void *pool_boundary;
 951         int used, malloced;
 952         int low, high;  /* 0-relative index values excluding empties */
 953         int ndx_start;  /* the start offset for inc_recurse mode */
 954         int flist_num;  /* 1-relative file_list number or 0 */
 955         int parent_ndx; /* dir_flist index of parent directory */
 956         int in_progress, to_redo;
 957 };
 958
 959 #define SUMFLG_SAME_OFFSET      (1<<0)
 960
 961 struct sum_buf {
 962         OFF_T offset;           /**< offset in file of this chunk */
 963         int32 len;              /**< length of chunk of file */
 964         uint32 sum1;            /**< simple checksum */
 965         int32 chain;            /**< next hash-table collision */
 966         short flags;            /**< flag bits */
 967         char sum2[SUM_LENGTH];  /**< checksum  */
 968 };
 969
 970 struct sum_struct {
 971         OFF_T flength;          /**< total file length */
 972         struct sum_buf *sums;   /**< points to info for each chunk */
 973         int32 count;            /**< how many chunks */
 974         int32 blength;          /**< block_length */
 975         int32 remainder;        /**< flength % block_length */
 976         int s2length;           /**< sum2_length */
 977 };
 978
 979 struct map_struct {
 980         OFF_T file_size;        /* File size (from stat)                */
 981         OFF_T p_offset;         /* Window start                         */
 982         OFF_T p_fd_offset;      /* offset of cursor in fd ala lseek     */
 983         char *p;                /* Window pointer                       */
 984         int32 p_size;           /* Largest window size we allocated     */
 985         int32 p_len;            /* Latest (rounded) window size         */
 986         int32 def_window_size;  /* Default window size                  */
 987         int fd;                 /* File Descriptor                      */
 988         int status;             /* first errno from read errors         */
 989 };
 990
 991 #define NAME_IS_FILE            (0)    /* filter name as a file */
 992 #define NAME_IS_DIR             (1<<0) /* filter name as a dir */
 993 #define NAME_IS_XATTR           (1<<2) /* filter name as an xattr */
 994
 995 #define FILTRULE_WILD           (1<<0) /* pattern has '*', '[', and/or '?' */
 996 #define FILTRULE_WILD2          (1<<1) /* pattern has '**' */
 997 #define FILTRULE_WILD2_PREFIX   (1<<2) /* pattern starts with "**" */
 998 #define FILTRULE_WILD3_SUFFIX   (1<<3) /* pattern ends with "***" */
 999 #define FILTRULE_ABS_PATH       (1<<4) /* path-match on absolute path */
1000 #define FILTRULE_INCLUDE        (1<<5) /* this is an include, not an exclude */
1001 #define FILTRULE_DIRECTORY      (1<<6) /* this matches only directories */
1002 #define FILTRULE_WORD_SPLIT     (1<<7) /* split rules on whitespace */
1003 #define FILTRULE_NO_INHERIT     (1<<8) /* don't inherit these rules */
1004 #define FILTRULE_NO_PREFIXES    (1<<9) /* parse no prefixes from patterns */
1005 #define FILTRULE_MERGE_FILE     (1<<10)/* specifies a file to merge */
1006 #define FILTRULE_PERDIR_MERGE   (1<<11)/* merge-file is searched per-dir */
1007 #define FILTRULE_EXCLUDE_SELF   (1<<12)/* merge-file name should be excluded */
1008 #define FILTRULE_FINISH_SETUP   (1<<13)/* per-dir merge file needs setup */
1009 #define FILTRULE_NEGATE         (1<<14)/* rule matches when pattern does not */
1010 #define FILTRULE_CVS_IGNORE     (1<<15)/* rule was -C or :C */
1011 #define FILTRULE_SENDER_SIDE    (1<<16)/* rule applies to the sending side */
1012 #define FILTRULE_RECEIVER_SIDE  (1<<17)/* rule applies to the receiving side */
1013 #define FILTRULE_CLEAR_LIST     (1<<18)/* this item is the "!" token */
1014 #define FILTRULE_PERISHABLE     (1<<19)/* perishable if parent dir goes away */
1015 #define FILTRULE_XATTR          (1<<20)/* rule only applies to xattr names */
1016
1017 #define FILTRULES_SIDES (FILTRULE_SENDER_SIDE | FILTRULE_RECEIVER_SIDE)
1018
1019 typedef struct filter_struct {
1020         struct filter_struct *next;
1021         char *pattern;
1022         uint32 rflags;
1023         union {
1024                 int slash_cnt;
1025                 struct filter_list_struct *mergelist;
1026         } u;
1027         uchar elide;
1028 } filter_rule;
1029
1030 typedef struct filter_list_struct {
1031         filter_rule *head;
1032         filter_rule *tail;
1033         char *debug_type;
1034 } filter_rule_list;
1035
1036 struct stats {
1037         int64 total_size;
1038         int64 total_transferred_size;
1039         int64 total_written;
1040         int64 total_read;
1041         int64 literal_data;
1042         int64 matched_data;
1043         int64 flist_buildtime;
1044         int64 flist_xfertime;
1045         int64 flist_size;
1046         int num_files, num_dirs, num_symlinks, num_devices, num_specials;
1047         int created_files, created_dirs, created_symlinks, created_devices, created_specials;
1048         int deleted_files, deleted_dirs, deleted_symlinks, deleted_devices, deleted_specials;
1049         int xferred_files;
1050 };
1051
1052 struct chmod_mode_struct;
1053
1054 struct flist_ndx_item {
1055         struct flist_ndx_item *next;
1056         int ndx;
1057 };
1058
1059 typedef struct {
1060         struct flist_ndx_item *head, *tail;
1061 } flist_ndx_list;
1062
1063 #define EMPTY_ITEM_LIST {NULL, 0, 0}
1064
1065 typedef struct {
1066         void *items;
1067         size_t count;
1068         size_t malloced;
1069 } item_list;
1070
1071 #define EXPAND_ITEM_LIST(lp, type, incr) \
1072         (type*)expand_item_list(lp, sizeof (type), #type, incr)
1073
1074 #define EMPTY_XBUF {NULL, 0, 0, 0}
1075
1076 typedef struct {
1077         char *buf;
1078         size_t pos;  /* pos = read pos in the buf */
1079         size_t len;  /* len = chars following pos */
1080         size_t size; /* size = total space in buf */
1081 } xbuf;
1082
1083 #define INIT_XBUF(xb, str, ln, sz) (xb).buf = (str), (xb).len = (ln), (xb).size = (sz), (xb).pos = 0
1084 #define INIT_XBUF_STRLEN(xb, str) (xb).buf = (str), (xb).len = strlen((xb).buf), (xb).size = (size_t)-1, (xb).pos = 0
1085 /* This one is used to make an output xbuf based on a char[] buffer: */
1086 #define INIT_CONST_XBUF(xb, bf) (xb).buf = (bf), (xb).size = sizeof (bf), (xb).len = (xb).pos = 0
1087
1088 #define ICB_EXPAND_OUT (1<<0)
1089 #define ICB_INCLUDE_BAD (1<<1)
1090 #define ICB_INCLUDE_INCOMPLETE (1<<2)
1091 #define ICB_CIRCULAR_OUT (1<<3)
1092 #define ICB_INIT (1<<4)
1093
1094 #define IOBUF_KEEP_BUFS 0
1095 #define IOBUF_FREE_BUFS 1
1096
1097 #define MPLX_SWITCHING IOBUF_KEEP_BUFS
1098 #define MPLX_ALL_DONE IOBUF_FREE_BUFS
1099 #define MPLX_TO_BUFFERED 2
1100
1101 #define RL_EOL_NULLS (1<<0)
1102 #define RL_DUMP_COMMENTS (1<<1)
1103 #define RL_CONVERT (1<<2)
1104
1105 typedef struct {
1106         char name_type;
1107 #ifdef USE_FLEXIBLE_ARRAY
1108         char fname[]; /* has variable size */
1109 #else
1110         char fname[1]; /* A kluge that should work like a flexible array */
1111 #endif
1112 } relnamecache;
1113
1114 #ifdef USE_FLEXIBLE_ARRAY
1115 #define RELNAMECACHE_LEN (sizeof (relnamecache))
1116 #else
1117 #define RELNAMECACHE_LEN (offsetof(relnamecache, fname))
1118 #endif
1119
1120 #include "byteorder.h"
1121 #include "lib/mdigest.h"
1122 #include "lib/wildmatch.h"
1123 #include "lib/permstring.h"
1124 #include "lib/addrinfo.h"
1125
1126 #ifndef __GNUC__
1127 #define __attribute__(x)
1128 #else
1129 # if __GNUC__ <= 2
1130 # define NORETURN
1131 # endif
1132 #endif
1133
1134 #define UNUSED(x) x __attribute__((__unused__))
1135 #ifndef NORETURN
1136 #define NORETURN __attribute__((__noreturn__))
1137 #endif
1138
1139 typedef struct {
1140     STRUCT_STAT st;
1141     time_t crtime;
1142 #ifdef SUPPORT_ACLS
1143     struct rsync_acl *acc_acl; /* access ACL */
1144     struct rsync_acl *def_acl; /* default ACL */
1145 #endif
1146 #ifdef SUPPORT_XATTRS
1147     item_list *xattr;
1148 #endif
1149 } stat_x;
1150
1151 #define ACL_READY(sx) ((sx).acc_acl != NULL)
1152 #define XATTR_READY(sx) ((sx).xattr != NULL)
1153
1154 #define CLVL_NOT_SPECIFIED INT_MIN
1155
1156 #define CPRES_AUTO (-1)
1157 #define CPRES_NONE 0
1158 #define CPRES_ZLIB 1
1159 #define CPRES_ZLIBX 2
1160 #define CPRES_LZ4 3
1161 #define CPRES_ZSTD 4
1162
1163 #define NSTR_CHECKSUM 0
1164 #define NSTR_COMPRESS 1
1165
1166 struct name_num_item {
1167         int num, flags;
1168         const char *name;
1169         struct name_num_item *main_nni;
1170 };
1171
1172 struct name_num_obj {
1173         const char *type;
1174         struct name_num_item *negotiated_nni;
1175         uchar *saw;
1176         int saw_len;
1177         struct name_num_item *list;
1178 };
1179
1180 #ifdef EXTERNAL_ZLIB
1181 #define read_buf read_buf_
1182 #endif
1183
1184 #ifndef __cplusplus
1185 #include "proto.h"
1186 #endif
1187
1188 #ifndef SUPPORT_XATTRS
1189 #define x_stat(fn,fst,xst) do_stat(fn,fst)
1190 #define x_lstat(fn,fst,xst) do_lstat(fn,fst)
1191 #define x_fstat(fd,fst,xst) do_fstat(fd,fst)
1192 #endif
1193
1194 /* We have replacement versions of these if they're missing. */
1195 #ifndef HAVE_ASPRINTF
1196 int asprintf(char **ptr, const char *format, ...);
1197 #endif
1198
1199 #ifndef HAVE_VASPRINTF
1200 int vasprintf(char **ptr, const char *format, va_list ap);
1201 #endif
1202
1203 #if !defined HAVE_VSNPRINTF || !defined HAVE_C99_VSNPRINTF
1204 #define vsnprintf rsync_vsnprintf
1205 int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
1206 #endif
1207
1208 #if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF
1209 #define snprintf rsync_snprintf
1210 int snprintf(char *str, size_t count, const char *fmt,...);
1211 #endif
1212
1213 #ifndef HAVE_STRERROR
1214 extern char *sys_errlist[];
1215 #define strerror(i) sys_errlist[i]
1216 #endif
1217
1218 #ifndef HAVE_STRCHR
1219 # define strchr                 index
1220 # define strrchr                rindex
1221 #endif
1222
1223 #ifndef HAVE_ERRNO_DECL
1224 extern int errno;
1225 #endif
1226
1227 #ifdef HAVE_READLINK
1228 #define SUPPORT_LINKS 1
1229 #if !defined NO_SYMLINK_XATTRS && !defined NO_SYMLINK_USER_XATTRS
1230 #define do_readlink(path, buf, bufsiz) readlink(path, buf, bufsiz)
1231 #endif
1232 #endif
1233 #ifdef HAVE_LINK
1234 #define SUPPORT_HARD_LINKS 1
1235 #endif
1236
1237 #ifdef HAVE_SIGACTION
1238 #define SIGACTION(n,h) sigact.sa_handler=(h), sigaction((n),&sigact,NULL)
1239 #define signal(n,h) we_need_to_call_SIGACTION_not_signal(n,h)
1240 #else
1241 #define SIGACTION(n,h) signal(n,h)
1242 #endif
1243
1244 #ifndef EWOULDBLOCK
1245 #define EWOULDBLOCK EAGAIN
1246 #endif
1247
1248 #ifndef STDIN_FILENO
1249 #define STDIN_FILENO 0
1250 #endif
1251
1252 #ifndef STDOUT_FILENO
1253 #define STDOUT_FILENO 1
1254 #endif
1255
1256 #ifndef STDERR_FILENO
1257 #define STDERR_FILENO 2
1258 #endif
1259
1260 #ifndef S_IRUSR
1261 #define S_IRUSR 0400
1262 #endif
1263
1264 #ifndef S_IWUSR
1265 #define S_IWUSR 0200
1266 #endif
1267
1268 #ifndef ACCESSPERMS
1269 #define ACCESSPERMS 0777
1270 #endif
1271
1272 #ifndef S_ISVTX
1273 #define S_ISVTX 0
1274 #endif
1275
1276 #define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
1277
1278 #ifndef _S_IFMT
1279 #define _S_IFMT        0170000
1280 #endif
1281
1282 #ifndef _S_IFLNK
1283 #define _S_IFLNK  0120000
1284 #endif
1285
1286 #ifndef S_ISLNK
1287 #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
1288 #endif
1289
1290 #ifndef S_ISBLK
1291 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
1292 #endif
1293
1294 #ifndef S_ISCHR
1295 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
1296 #endif
1297
1298 #ifndef S_ISSOCK
1299 #ifdef _S_IFSOCK
1300 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
1301 #else
1302 #define S_ISSOCK(mode) (0)
1303 #endif
1304 #endif
1305
1306 #ifndef S_ISFIFO
1307 #ifdef _S_IFIFO
1308 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
1309 #else
1310 #define S_ISFIFO(mode) (0)
1311 #endif
1312 #endif
1313
1314 #ifndef S_ISDIR
1315 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
1316 #endif
1317
1318 #ifndef S_ISREG
1319 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
1320 #endif
1321
1322 /* work out what fcntl flag to use for non-blocking */
1323 #ifdef O_NONBLOCK
1324 # define NONBLOCK_FLAG O_NONBLOCK
1325 #elif defined SYSV
1326 # define NONBLOCK_FLAG O_NDELAY
1327 #else
1328 # define NONBLOCK_FLAG FNDELAY
1329 #endif
1330
1331 #ifndef INADDR_LOOPBACK
1332 #define INADDR_LOOPBACK 0x7f000001
1333 #endif
1334
1335 #ifndef INADDR_NONE
1336 #define INADDR_NONE 0xffffffff
1337 #endif
1338
1339 #define IS_SPECIAL(mode) (S_ISSOCK(mode) || S_ISFIFO(mode))
1340 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode))
1341
1342 /* Initial mask on permissions given to temporary files.  Mask off setuid
1343      bits and group access because of potential race-condition security
1344      holes, and mask other access because mode 707 is bizarre */
1345 #define INITACCESSPERMS 0700
1346
1347 /* handler for null strings in printf format */
1348 #define NS(s) ((s)?(s):"<NULL>")
1349
1350 extern char *do_calloc;
1351
1352 /* Convenient wrappers for malloc and realloc.  Use them. */
1353 #define new(type) ((type*)my_alloc(NULL, sizeof (type), 1, __FILE__, __LINE__))
1354 #define new0(type) ((type*)my_alloc(do_calloc, sizeof (type), 1, __FILE__, __LINE__))
1355 #define realloc_buf(ptr, num) my_alloc((ptr), (num), 1, __FILE__, __LINE__)
1356
1357 #define new_array(type, num) ((type*)my_alloc(NULL, (num), sizeof (type), __FILE__, __LINE__))
1358 #define new_array0(type, num) ((type*)my_alloc(do_calloc, (num), sizeof (type), __FILE__, __LINE__))
1359 #define realloc_array(ptr, type, num) ((type*)my_alloc((ptr), (num), sizeof (type), __FILE__, __LINE__))
1360
1361 #undef strdup
1362 #define strdup(s) my_strdup(s, __FILE__, __LINE__)
1363
1364 #define out_of_memory(msg) _out_of_memory(msg, __FILE__, __LINE__)
1365 #define overflow_exit(msg) _overflow_exit(msg, __FILE__, __LINE__)
1366
1367 /* use magic gcc attributes to catch format errors */
1368  void rprintf(enum logcode , const char *, ...)
1369      __attribute__((format (printf, 2, 3)))
1370 ;
1371
1372 /* This is just like rprintf, but it also tries to print some
1373  * representation of the error code.  Normally errcode = errno. */
1374 void rsyserr(enum logcode, int, const char *, ...)
1375      __attribute__((format (printf, 3, 4)))
1376      ;
1377
1378 /* Make sure that the O_BINARY flag is defined. */
1379 #ifndef O_BINARY
1380 #define O_BINARY 0
1381 #endif
1382
1383 #ifndef HAVE_STRLCPY
1384 size_t strlcpy(char *d, const char *s, size_t bufsize);
1385 #endif
1386
1387 #ifndef HAVE_STRLCAT
1388 size_t strlcat(char *d, const char *s, size_t bufsize);
1389 #endif
1390
1391 #ifndef WEXITSTATUS
1392 #define WEXITSTATUS(stat)       ((int)(((stat)>>8)&0xFF))
1393 #endif
1394 #ifndef WIFEXITED
1395 #define WIFEXITED(stat)         ((int)((stat)&0xFF) == 0)
1396 #endif
1397
1398 #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
1399
1400 #ifdef HAVE_GETEUID
1401 #define MY_UID() geteuid()
1402 #else
1403 #define MY_UID() getuid()
1404 #endif
1405
1406 #ifdef HAVE_GETEGID
1407 #define MY_GID() getegid()
1408 #else
1409 #define MY_GID() getgid()
1410 #endif
1411
1412 #ifdef FORCE_FD_ZERO_MEMSET
1413 #undef FD_ZERO
1414 #define FD_ZERO(fdsetp) memset(fdsetp, 0, sizeof (fd_set))
1415 #endif
1416
1417 extern short info_levels[], debug_levels[];
1418
1419 #define INFO_GTE(flag, lvl) (info_levels[INFO_##flag] >= (lvl))
1420 #define INFO_EQ(flag, lvl) (info_levels[INFO_##flag] == (lvl))
1421 #define DEBUG_GTE(flag, lvl) (debug_levels[DEBUG_##flag] >= (lvl))
1422 #define DEBUG_EQ(flag, lvl) (debug_levels[DEBUG_##flag] == (lvl))
1423
1424 #define INFO_BACKUP 0
1425 #define INFO_COPY (INFO_BACKUP+1)
1426 #define INFO_DEL (INFO_COPY+1)
1427 #define INFO_FLIST (INFO_DEL+1)
1428 #define INFO_MISC (INFO_FLIST+1)
1429 #define INFO_MOUNT (INFO_MISC+1)
1430 #define INFO_NAME (INFO_MOUNT+1)
1431 #define INFO_NONREG (INFO_NAME+1)
1432 #define INFO_PROGRESS (INFO_NONREG+1)
1433 #define INFO_REMOVE (INFO_PROGRESS+1)
1434 #define INFO_SKIP (INFO_REMOVE+1)
1435 #define INFO_STATS (INFO_SKIP+1)
1436 #define INFO_SYMSAFE (INFO_STATS+1)
1437
1438 #define COUNT_INFO (INFO_SYMSAFE+1)
1439
1440 #define DEBUG_ACL 0
1441 #define DEBUG_BACKUP (DEBUG_ACL+1)
1442 #define DEBUG_BIND (DEBUG_BACKUP+1)
1443 #define DEBUG_CHDIR (DEBUG_BIND+1)
1444 #define DEBUG_CONNECT (DEBUG_CHDIR+1)
1445 #define DEBUG_CMD (DEBUG_CONNECT+1)
1446 #define DEBUG_DEL (DEBUG_CMD+1)
1447 #define DEBUG_DELTASUM (DEBUG_DEL+1)
1448 #define DEBUG_DUP (DEBUG_DELTASUM+1)
1449 #define DEBUG_EXIT (DEBUG_DUP+1)
1450 #define DEBUG_FILTER (DEBUG_EXIT+1)
1451 #define DEBUG_FLIST (DEBUG_FILTER+1)
1452 #define DEBUG_FUZZY (DEBUG_FLIST+1)
1453 #define DEBUG_GENR (DEBUG_FUZZY+1)
1454 #define DEBUG_HASH (DEBUG_GENR+1)
1455 #define DEBUG_HLINK (DEBUG_HASH+1)
1456 #define DEBUG_ICONV (DEBUG_HLINK+1)
1457 #define DEBUG_IO (DEBUG_ICONV+1)
1458 #define DEBUG_NSTR (DEBUG_IO+1)
1459 #define DEBUG_OWN (DEBUG_NSTR+1)
1460 #define DEBUG_PROTO (DEBUG_OWN+1)
1461 #define DEBUG_RECV (DEBUG_PROTO+1)
1462 #define DEBUG_SEND (DEBUG_RECV+1)
1463 #define DEBUG_TIME (DEBUG_SEND+1)
1464
1465 #define COUNT_DEBUG (DEBUG_TIME+1)
1466
1467 #ifndef HAVE_INET_NTOP
1468 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
1469 #endif
1470
1471 #ifndef HAVE_INET_PTON
1472 int inet_pton(int af, const char *src, void *dst);
1473 #endif
1474
1475 #ifndef HAVE_GETPASS
1476 char *getpass(const char *prompt);
1477 #endif
1478
1479 #ifdef MAINTAINER_MODE
1480 const char *get_panic_action(void);
1481 #endif
1482
1483 #define NOISY_DEATH(msg) do { \
1484     fprintf(stderr, "%s in %s at line %d\n", msg, __FILE__, __LINE__); \
1485     exit_cleanup(RERR_UNSUPPORTED); \
1486 } while (0)
1487
1488 #ifdef HAVE_MALLINFO2
1489 #define MEM_ALLOC_INFO mallinfo2
1490 #elif defined HAVE_MALLINFO
1491 #define MEM_ALLOC_INFO mallinfo
1492 #endif