rsync.h

   1 /*
   2  * Copyright (C) 1996, 2000 Andrew Tridgell
   3  * Copyright (C) 1996 Paul Mackerras
   4  * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
   5  * Copyright (C) 2003-2008 Wayne Davison
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, visit the http://fsf.org website.
  19  */
  20
  21 #define False 0
  22 #define True 1
  23
  24 #define BLOCK_SIZE 700
  25 #define RSYNC_RSH_ENV "RSYNC_RSH"
  26 #define RSYNC_RSH_IO_ENV "RSYNC_RSH_IO"
  27
  28 #define RSYNC_NAME "rsync"
  29 /* RSYNCD_SYSCONF is now set in config.h */
  30 #define RSYNCD_USERCONF "rsyncd.conf"
  31
  32 #define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
  33 #define URL_PREFIX "rsync://"
  34
  35 #define SYMLINK_PREFIX "/rsyncd-munged/"  /* This MUST have a trailing slash! */
  36 #define SYMLINK_PREFIX_LEN ((int)sizeof SYMLINK_PREFIX - 1)
  37
  38 #define BACKUP_SUFFIX "~"
  39
  40 /* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
  41    incompatible with older versions :-( */
  42 #define CHAR_OFFSET 0
  43
  44 /* These flags are only used during the flist transfer. */
  45
  46 #define XMIT_TOP_DIR (1<<0)
  47 #define XMIT_SAME_MODE (1<<1)
  48 #define XMIT_SAME_RDEV_pre28 (1<<2)     /* protocols 20 - 27  */
  49 #define XMIT_EXTENDED_FLAGS (1<<2)      /* protocols 28 - now */
  50 #define XMIT_SAME_UID (1<<3)
  51 #define XMIT_SAME_GID (1<<4)
  52 #define XMIT_SAME_NAME (1<<5)
  53 #define XMIT_LONG_NAME (1<<6)
  54 #define XMIT_SAME_TIME (1<<7)
  55 #define XMIT_SAME_RDEV_MAJOR (1<<8)     /* protocols 28 - now (devices only) */
  56 #define XMIT_NO_CONTENT_DIR (1<<8)      /* protocols 30 - now (dirs only) */
  57 #define XMIT_HLINKED (1<<9)             /* protocols 28 - now */
  58 #define XMIT_SAME_DEV_pre30 (1<<10)     /* protocols 28 - 29  */
  59 #define XMIT_USER_NAME_FOLLOWS (1<<10)  /* protocols 30 - now */
  60 #define XMIT_RDEV_MINOR_8_pre30 (1<<11) /* protocols 28 - 29  */
  61 #define XMIT_GROUP_NAME_FOLLOWS (1<<11) /* protocols 30 - now */
  62 #define XMIT_HLINK_FIRST (1<<12)        /* protocols 30 - now (HLINKED files only) */
  63 #define XMIT_IO_ERROR_ENDLIST (1<<12)   /* protocols 31 - now (w/XMIT_EXTENDED_FLAGS) */
  64 #define XMIT_MOD_NSEC (1<<13)           /* protocols 31 - now */
  65
  66 /* These flags are used in the live flist data. */
  67
  68 #define FLAG_TOP_DIR (1<<0)     /* sender/receiver/generator */
  69 #define FLAG_FILE_SENT (1<<1)   /* sender/receiver/generator */
  70 #define FLAG_DIR_CREATED (1<<1) /* generator */
  71 #define FLAG_CONTENT_DIR (1<<2) /* sender/receiver/generator */
  72 #define FLAG_MOUNT_DIR (1<<3)   /* sender/generator (dirs only) */
  73 #define FLAG_SKIP_HLINK (1<<3)  /* receiver/generator (w/FLAG_HLINKED) */
  74 #define FLAG_DUPLICATE (1<<4)   /* sender */
  75 #define FLAG_MISSING_DIR (1<<4) /* generator */
  76 #define FLAG_HLINKED (1<<5)     /* receiver/generator (checked on all types) */
  77 #define FLAG_HLINK_FIRST (1<<6) /* receiver/generator (w/FLAG_HLINKED) */
  78 #define FLAG_IMPLIED_DIR (1<<6) /* sender/receiver/generator (dirs only) */
  79 #define FLAG_HLINK_LAST (1<<7)  /* receiver/generator */
  80 #define FLAG_HLINK_DONE (1<<8)  /* receiver/generator (checked on all types) */
  81 #define FLAG_LENGTH64 (1<<9)    /* sender/receiver/generator */
  82 #define FLAG_SKIP_GROUP (1<<10) /* receiver/generator */
  83 #define FLAG_TIME_FAILED (1<<11)/* generator */
  84 #define FLAG_MOD_NSEC (1<<12)   /* sender/receiver/generator */
  85
  86 /* These flags are passed to functions but not stored. */
  87
  88 #define FLAG_DIVERT_DIRS (1<<16)/* sender */
  89
  90 #define BITS_SET(val,bits) (((val) & (bits)) == (bits))
  91 #define BITS_SETnUNSET(val,onbits,offbits) (((val) & ((onbits)|(offbits))) == (onbits))
  92 #define BITS_EQUAL(b1,b2,mask) (((unsigned)(b1) & (unsigned)(mask)) \
  93                              == ((unsigned)(b2) & (unsigned)(mask)))
  94
  95 /* update this if you make incompatible changes */
  96 #define PROTOCOL_VERSION 31
  97
  98 /* This is used when working on a new protocol version in CVS, and should
  99  * be a new non-zero value for each CVS change that affects the protocol.
 100  * It must ALWAYS be 0 when the protocol goes final (and NEVER before)! */
 101 #define SUBPROTOCOL_VERSION 12
 102
 103 /* We refuse to interoperate with versions that are not in this range.
 104  * Note that we assume we'll work with later versions: the onus is on
 105  * people writing them to make sure that they don't send us anything
 106  * we won't understand.
 107  *
 108  * Interoperation with old but supported protocol versions
 109  * should cause a warning to be printed.  At a future date
 110  * the old protocol will become the minimum and
 111  * compatibility code removed.
 112  *
 113  * There are two possible explanations for the limit at
 114  * MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
 115  * do not interoperate with us, and (more likely) so that we can
 116  * detect an attempt to connect rsync to a non-rsync server, which is
 117  * unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
 118  * MAX_PROTOCOL_VERSION. */
 119
 120 #define MIN_PROTOCOL_VERSION 20
 121 #define OLD_PROTOCOL_VERSION 25
 122 #define MAX_PROTOCOL_VERSION 40
 123
 124 #define MIN_FILECNT_LOOKAHEAD 1000
 125 #define MAX_FILECNT_LOOKAHEAD 10000
 126
 127 #define RSYNC_PORT 873
 128
 129 #define SPARSE_WRITE_SIZE (1024)
 130 #define WRITE_SIZE (32*1024)
 131 #define CHUNK_SIZE (32*1024)
 132 #define MAX_MAP_SIZE (256*1024)
 133 #define IO_BUFFER_SIZE (32*1024)
 134 #define MAX_BLOCK_SIZE ((int32)1 << 17)
 135
 136 /* For compatibility with older rsyncs */
 137 #define OLD_MAX_BLOCK_SIZE ((int32)1 << 29)
 138
 139 #define ROUND_UP_1024(siz) ((siz) & (1024-1) ? ((siz) | (1024-1)) + 1 : (siz))
 140
 141 #define IOERR_GENERAL   (1<<0) /* For backward compatibility, this must == 1 */
 142 #define IOERR_VANISHED  (1<<1)
 143 #define IOERR_DEL_LIMIT (1<<2)
 144
 145 #define MAX_ARGS 1000
 146 #define MAX_BASIS_DIRS 20
 147 #define MAX_SERVER_ARGS (MAX_BASIS_DIRS*2 + 100)
 148
 149 #define MPLEX_BASE 7
 150
 151 #define NO_FILTERS      0
 152 #define SERVER_FILTERS  1
 153 #define ALL_FILTERS     2
 154
 155 #define XFLG_FATAL_ERRORS       (1<<0)
 156 #define XFLG_OLD_PREFIXES       (1<<1)
 157 #define XFLG_ANCHORED2ABS       (1<<2) /* leading slash indicates absolute */
 158 #define XFLG_ABS_IF_SLASH       (1<<3) /* leading or interior slash is absolute */
 159 #define XFLG_DIR2WILD3          (1<<4) /* dir/ match gets trailing *** added */
 160
 161 #define ATTRS_REPORT            (1<<0)
 162 #define ATTRS_SKIP_MTIME        (1<<1)
 163
 164 #define FULL_FLUSH      1
 165 #define NORMAL_FLUSH    0
 166
 167 #define PDIR_CREATE     1
 168 #define PDIR_DELETE     0
 169
 170 /* Note: 0x00 - 0x7F are used for basis_dir[] indexes! */
 171 #define FNAMECMP_BASIS_DIR_LOW  0x00 /* Must remain 0! */
 172 #define FNAMECMP_BASIS_DIR_HIGH 0x7F
 173 #define FNAMECMP_FNAME          0x80
 174 #define FNAMECMP_PARTIAL_DIR    0x81
 175 #define FNAMECMP_BACKUP         0x82
 176 #define FNAMECMP_FUZZY          0x83
 177
 178 /* For use by the itemize_changes code */
 179 #define ITEM_REPORT_ATIME (1<<0)
 180 #define ITEM_REPORT_CHANGE (1<<1)
 181 #define ITEM_REPORT_SIZE (1<<2)     /* regular files only */
 182 #define ITEM_REPORT_TIMEFAIL (1<<2) /* symlinks only */
 183 #define ITEM_REPORT_TIME (1<<3)
 184 #define ITEM_REPORT_PERMS (1<<4)
 185 #define ITEM_REPORT_OWNER (1<<5)
 186 #define ITEM_REPORT_GROUP (1<<6)
 187 #define ITEM_REPORT_ACL (1<<7)
 188 #define ITEM_REPORT_XATTR (1<<8)
 189 #define ITEM_BASIS_TYPE_FOLLOWS (1<<11)
 190 #define ITEM_XNAME_FOLLOWS (1<<12)
 191 #define ITEM_IS_NEW (1<<13)
 192 #define ITEM_LOCAL_CHANGE (1<<14)
 193 #define ITEM_TRANSFER (1<<15)
 194 /* These are outside the range of the transmitted flags. */
 195 #define ITEM_MISSING_DATA (1<<16)          /* used by log_formatted() */
 196 #define ITEM_DELETED (1<<17)               /* used by log_formatted() */
 197 #define ITEM_MATCHED (1<<18)               /* used by itemize() */
 198
 199 #define SIGNIFICANT_ITEM_FLAGS (~(\
 200         ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE))
 201
 202 #define CFN_KEEP_DOT_DIRS (1<<0)
 203 #define CFN_KEEP_TRAILING_SLASH (1<<1)
 204 #define CFN_DROP_TRAILING_DOT_DIR (1<<2)
 205 #define CFN_COLLAPSE_DOT_DOT_DIRS (1<<3)
 206
 207 #define SP_DEFAULT 0
 208 #define SP_KEEP_DOT_DIRS (1<<0)
 209
 210 #define CD_NORMAL 0
 211 #define CD_SKIP_CHDIR 1
 212
 213 /* Log-message categories.  FLOG only goes to the log file, not the client;
 214  * FCLIENT is the opposite. */
 215 enum logcode {
 216     FNONE=0, /* never sent */
 217     FERROR_XFER=1, FINFO=2, /* sent over socket for any protocol */
 218     FERROR=3, FWARNING=4, /* sent over socket for protocols >= 30 */
 219     FERROR_SOCKET=5, FLOG=6, /* only sent via receiver -> generator pipe */
 220     FERROR_UTF8=8, /* only sent via receiver -> generator pipe */
 221     FCLIENT=7 /* never transmitted (e.g. server converts to FINFO) */
 222 };
 223
 224 /* Messages types that are sent over the message channel.  The logcode
 225  * values must all be present here with identical numbers. */
 226 enum msgcode {
 227         MSG_DATA=0,     /* raw data on the multiplexed stream */
 228         MSG_ERROR_XFER=FERROR_XFER, MSG_INFO=FINFO, /* remote logging */
 229         MSG_ERROR=FERROR, MSG_WARNING=FWARNING, /* protocol-30 remote logging */
 230         MSG_ERROR_SOCKET=FERROR_SOCKET, /* sibling logging */
 231         MSG_ERROR_UTF8=FERROR_UTF8, /* sibling logging */
 232         MSG_LOG=FLOG, MSG_CLIENT=FCLIENT, /* sibling logging */
 233         MSG_REDO=9,     /* reprocess indicated flist index */
 234         MSG_STATS=10,   /* message has stats data for generator */
 235         MSG_IO_ERROR=22,/* the sending side had an I/O error */
 236         MSG_IO_TIMEOUT=33,/* tell client about a daemon's timeout value */
 237         MSG_NOOP=42,    /* a do-nothing message (legacy protocol-30 only) */
 238         MSG_ERROR_EXIT=86, /* synchronize an error exit (siblings and protocol >= 31) */
 239         MSG_SUCCESS=100,/* successfully updated indicated flist index */
 240         MSG_DELETED=101,/* successfully deleted a file on receiving side */
 241         MSG_NO_SEND=102,/* sender failed to open a file we wanted */
 242 };
 243
 244 #define NDX_DONE -1
 245 #define NDX_FLIST_EOF -2
 246 #define NDX_DEL_STATS -3
 247 #define NDX_FLIST_OFFSET -101
 248
 249 /* For calling delete_item() and delete_dir_contents(). */
 250 #define DEL_NO_UID_WRITE        (1<<0) /* file/dir has our uid w/o write perm */
 251 #define DEL_RECURSE             (1<<1) /* if dir, delete all contents */
 252 #define DEL_DIR_IS_EMPTY        (1<<2) /* internal delete_FUNCTIONS use only */
 253 #define DEL_FOR_FILE            (1<<3) /* making room for a replacement file */
 254 #define DEL_FOR_DIR             (1<<4) /* making room for a replacement dir */
 255 #define DEL_FOR_SYMLINK         (1<<5) /* making room for a replacement symlink */
 256 #define DEL_FOR_DEVICE          (1<<6) /* making room for a replacement device */
 257 #define DEL_FOR_SPECIAL         (1<<7) /* making room for a replacement special */
 258 #define DEL_FOR_BACKUP          (1<<8) /* the delete is for a backup operation */
 259
 260 #define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
 261
 262 enum delret {
 263         DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
 264 };
 265
 266 /* Defines for make_path() */
 267 #define MKP_DROP_NAME           (1<<0) /* drop trailing filename or trailing slash */
 268 #define MKP_SKIP_SLASH          (1<<1) /* skip one or more leading slashes */
 269
 270 /* Defines for maybe_send_keepalive() */
 271 #define MSK_ALLOW_FLUSH         (1<<0)
 272 #define MSK_ACTIVE_RECEIVER     (1<<1)
 273
 274 #include "errcode.h"
 275
 276 #include "config.h"
 277
 278 /* The default RSYNC_RSH is always set in config.h. */
 279
 280 #include <stdio.h>
 281 #ifdef HAVE_SYS_TYPES_H
 282 # include <sys/types.h>
 283 #endif
 284 #ifdef HAVE_SYS_STAT_H
 285 # include <sys/stat.h>
 286 #endif
 287 #ifdef STDC_HEADERS
 288 # include <stdlib.h>
 289 # include <stddef.h>
 290 #else
 291 # ifdef HAVE_STDLIB_H
 292 #  include <stdlib.h>
 293 # endif
 294 #endif
 295 #ifdef HAVE_STRING_H
 296 # if !defined STDC_HEADERS && defined HAVE_MEMORY_H
 297 #  include <memory.h>
 298 # endif
 299 # include <string.h>
 300 #endif
 301 #ifdef HAVE_STRINGS_H
 302 # include <strings.h>
 303 #endif
 304 #ifdef HAVE_INTTYPES_H
 305 # include <inttypes.h>
 306 #endif
 307 #ifdef HAVE_STDINT_H
 308 # include <stdint.h>
 309 #endif
 310 #ifdef HAVE_UNISTD_H
 311 # include <unistd.h>
 312 #endif
 313
 314 #ifdef HAVE_SYS_PARAM_H
 315 #include <sys/param.h>
 316 #endif
 317
 318 #if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H)
 319 #include <malloc.h>
 320 #endif
 321
 322 #ifdef HAVE_SYS_SOCKET_H
 323 #include <sys/socket.h>
 324 #endif
 325
 326 #ifdef TIME_WITH_SYS_TIME
 327 #include <sys/time.h>
 328 #include <time.h>
 329 #else
 330 #ifdef HAVE_SYS_TIME_H
 331 #include <sys/time.h>
 332 #else
 333 #include <time.h>
 334 #endif
 335 #endif
 336
 337 #ifdef HAVE_FCNTL_H
 338 #include <fcntl.h>
 339 #else
 340 #ifdef HAVE_SYS_FCNTL_H
 341 #include <sys/fcntl.h>
 342 #endif
 343 #endif
 344
 345 #ifdef HAVE_SYS_IOCTL_H
 346 #include <sys/ioctl.h>
 347 #endif
 348
 349 #ifdef HAVE_SYS_FILIO_H
 350 #include <sys/filio.h>
 351 #endif
 352
 353 #include <signal.h>
 354 #ifdef HAVE_SYS_WAIT_H
 355 #include <sys/wait.h>
 356 #endif
 357 #ifdef HAVE_CTYPE_H
 358 #include <ctype.h>
 359 #endif
 360 #ifdef HAVE_GRP_H
 361 #include <grp.h>
 362 #endif
 363 #include <errno.h>
 364
 365 #ifdef HAVE_UTIME_H
 366 #include <utime.h>
 367 #endif
 368
 369 #if defined HAVE_UTIMENSAT || defined HAVE_LUTIMES
 370 #define CAN_SET_SYMLINK_TIMES 1
 371 #endif
 372
 373 #ifdef HAVE_SYS_SELECT_H
 374 #include <sys/select.h>
 375 #endif
 376
 377 #ifdef HAVE_SYS_MODE_H
 378 /* apparently AIX needs this for S_ISLNK */
 379 #ifndef S_ISLNK
 380 #include <sys/mode.h>
 381 #endif
 382 #endif
 383
 384 /* these are needed for the uid/gid mapping code */
 385 #include <pwd.h>
 386 #include <grp.h>
 387
 388 #include <stdarg.h>
 389 #include <netinet/in.h>
 390 #include <arpa/inet.h>
 391 #ifdef HAVE_NETDB_H
 392 #include <netdb.h>
 393 #endif
 394 #include <syslog.h>
 395 #include <sys/file.h>
 396
 397 #ifdef HAVE_DIRENT_H
 398 # include <dirent.h>
 399 #else
 400 # define dirent direct
 401 # ifdef HAVE_SYS_NDIR_H
 402 #  include <sys/ndir.h>
 403 # endif
 404 # ifdef HAVE_SYS_DIR_H
 405 #  include <sys/dir.h>
 406 # endif
 407 # ifdef HAVE_NDIR_H
 408 #  include <ndir.h>
 409 # endif
 410 #endif
 411
 412 #ifdef MAJOR_IN_MKDEV
 413 #include <sys/mkdev.h>
 414 # if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
 415 #  define makedev mkdev
 416 # endif
 417 #elif defined MAJOR_IN_SYSMACROS
 418 #include <sys/sysmacros.h>
 419 #endif
 420
 421 #ifdef MAKEDEV_TAKES_3_ARGS
 422 #define MAKEDEV(devmajor,devminor) makedev(0,devmajor,devminor)
 423 #else
 424 #define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor)
 425 #endif
 426
 427 #ifdef HAVE_COMPAT_H
 428 #include <compat.h>
 429 #endif
 430
 431 #ifdef HAVE_LIMITS_H
 432 # include <limits.h>
 433 #endif
 434
 435 #if defined USE_ICONV_OPEN && defined HAVE_ICONV_H
 436 #include <iconv.h>
 437 #ifndef ICONV_CONST
 438 #define ICONV_CONST
 439 #endif
 440 #else
 441 #ifdef ICONV_CONST
 442 #undef ICONV_CONST
 443 #endif
 444 #ifdef ICONV_OPTION
 445 #undef ICONV_OPTION
 446 #endif
 447 #ifdef iconv_t
 448 #undef iconv_t
 449 #endif
 450 #define iconv_t int
 451 #endif
 452
 453 #include <assert.h>
 454
 455 #include "lib/pool_alloc.h"
 456
 457 #ifndef HAVE_ID_T
 458 typedef unsigned int id_t;
 459 #endif
 460 #ifndef HAVE_PID_T
 461 typedef int pid_t;
 462 #endif
 463 #ifndef HAVE_MODE_T
 464 typedef unsigned int mode_t;
 465 #endif
 466 #ifndef HAVE_OFF_T
 467 typedef long off_t;
 468 #undef SIZEOF_OFF_T
 469 #define SIZEOF_OFF_T SIZEOF_LONG
 470 #endif
 471 #ifndef HAVE_SIZE_T
 472 typedef unsigned int size_t;
 473 #endif
 474
 475 #define BOOL int
 476
 477 #ifndef uchar
 478 #define uchar unsigned char
 479 #endif
 480
 481 #ifdef SIGNED_CHAR_OK
 482 #define schar signed char
 483 #else
 484 #define schar char
 485 #endif
 486
 487 #ifndef int16
 488 #if SIZEOF_INT16_T == 2
 489 # define int16 int16_t
 490 #else
 491 # define int16 short
 492 #endif
 493 #endif
 494
 495 #ifndef uint16
 496 #if SIZEOF_UINT16_T == 2
 497 # define uint16 uint16_t
 498 #else
 499 # define uint16 unsigned int16
 500 #endif
 501 #endif
 502
 503 /* Find a variable that is either exactly 32-bits or longer.
 504  * If some code depends on 32-bit truncation, it will need to
 505  * take special action in a "#if SIZEOF_INT32 > 4" section. */
 506 #ifndef int32
 507 #if SIZEOF_INT32_T == 4
 508 # define int32 int32_t
 509 # define SIZEOF_INT32 4
 510 #elif SIZEOF_INT == 4
 511 # define int32 int
 512 # define SIZEOF_INT32 4
 513 #elif SIZEOF_LONG == 4
 514 # define int32 long
 515 # define SIZEOF_INT32 4
 516 #elif SIZEOF_SHORT == 4
 517 # define int32 short
 518 # define SIZEOF_INT32 4
 519 #elif SIZEOF_INT > 4
 520 # define int32 int
 521 # define SIZEOF_INT32 SIZEOF_INT
 522 #elif SIZEOF_LONG > 4
 523 # define int32 long
 524 # define SIZEOF_INT32 SIZEOF_LONG
 525 #else
 526 # error Could not find a 32-bit integer variable
 527 #endif
 528 #else
 529 # define SIZEOF_INT32 4
 530 #endif
 531
 532 #ifndef uint32
 533 #if SIZEOF_UINT32_T == 4
 534 # define uint32 uint32_t
 535 #else
 536 # define uint32 unsigned int32
 537 #endif
 538 #endif
 539
 540 #if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64
 541 #define OFF_T off_t
 542 #define STRUCT_STAT struct stat
 543 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF_T
 544 #else
 545 #define OFF_T off64_t
 546 #define STRUCT_STAT struct stat64
 547 #define USE_STAT64_FUNCS 1
 548 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF64_T
 549 #endif
 550
 551 /* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF
 552  * that's the maximum size the file system can handle and there is no
 553  * 64-bit type available.  The rsync source must therefore take steps
 554  * to ensure that any code that really requires a 64-bit integer has
 555  * it (e.g. the checksum code uses two 32-bit integers for its 64-bit
 556  * counter). */
 557 #if SIZEOF_INT64_T == 8
 558 # define int64 int64_t
 559 # define SIZEOF_INT64 8
 560 #elif SIZEOF_LONG == 8
 561 # define int64 long
 562 # define SIZEOF_INT64 8
 563 #elif SIZEOF_INT == 8
 564 # define int64 int
 565 # define SIZEOF_INT64 8
 566 #elif SIZEOF_LONG_LONG == 8
 567 # define int64 long long
 568 # define SIZEOF_INT64 8
 569 #elif SIZEOF_OFF64_T == 8
 570 # define int64 off64_t
 571 # define SIZEOF_INT64 8
 572 #elif SIZEOF_OFF_T == 8
 573 # define int64 off_t
 574 # define SIZEOF_INT64 8
 575 #elif SIZEOF_INT > 8
 576 # define int64 int
 577 # define SIZEOF_INT64 SIZEOF_INT
 578 #elif SIZEOF_LONG > 8
 579 # define int64 long
 580 # define SIZEOF_INT64 SIZEOF_LONG
 581 #elif SIZEOF_LONG_LONG > 8
 582 # define int64 long long
 583 # define SIZEOF_INT64 SIZEOF_LONG_LONG
 584 #else
 585 /* As long as it gets... */
 586 # define int64 off_t
 587 # define SIZEOF_INT64 SIZEOF_OFF_T
 588 #endif
 589
 590 struct hashtable {
 591         void *nodes;
 592         int32 size, entries;
 593         uint32 node_size;
 594         short key64;
 595 };
 596
 597 struct ht_int32_node {
 598         void *data;
 599         int32 key;
 600 };
 601
 602 struct ht_int64_node {
 603         void *data;
 604         int64 key;
 605 };
 606
 607 #define HT_NODE(tbl, bkts, i) ((void*)((char*)(bkts) + (i)*(tbl)->node_size))
 608 #define HT_KEY(node, k64) ((k64)? ((struct ht_int64_node*)(node))->key \
 609                          : (int64)((struct ht_int32_node*)(node))->key)
 610
 611 #ifndef MIN
 612 #define MIN(a,b) ((a)<(b)?(a):(b))
 613 #endif
 614
 615 #ifndef MAX
 616 #define MAX(a,b) ((a)>(b)?(a):(b))
 617 #endif
 618
 619 #ifndef MAXHOSTNAMELEN
 620 #define MAXHOSTNAMELEN 256
 621 #endif
 622
 623 #define SUM_LENGTH 16
 624 #define SHORT_SUM_LENGTH 2
 625 #define BLOCKSUM_BIAS 10
 626
 627 #ifndef MAXPATHLEN
 628 #define MAXPATHLEN 1024
 629 #endif
 630
 631 /* We want a roomy line buffer that can hold more than MAXPATHLEN,
 632  * and significantly more than an overly short MAXPATHLEN. */
 633 #if MAXPATHLEN < 4096
 634 #define BIGPATHBUFLEN (4096+1024)
 635 #else
 636 #define BIGPATHBUFLEN (MAXPATHLEN+1024)
 637 #endif
 638
 639 #ifndef NAME_MAX
 640 #define NAME_MAX 255
 641 #endif
 642
 643 #ifndef INADDR_NONE
 644 #define INADDR_NONE 0xffffffff
 645 #endif
 646
 647 #ifndef IN_LOOPBACKNET
 648 #define IN_LOOPBACKNET 127
 649 #endif
 650
 651 #if HAVE_UNIXWARE_ACLS|HAVE_SOLARIS_ACLS|HAVE_HPUX_ACLS
 652 #define ACLS_NEED_MASK 1
 653 #endif
 654
 655 union file_extras {
 656         int32 num;
 657         uint32 unum;
 658 };
 659
 660 struct file_struct {
 661         const char *dirname;    /* The dir info inside the transfer */
 662         time_t modtime;         /* When the item was last modified */
 663         uint32 len32;           /* Lowest 32 bits of the file's length */
 664         uint16 mode;            /* The item's type and permissions */
 665         uint16 flags;           /* The FLAG_* bits for this item */
 666         const char basename[1]; /* The basename (AKA filename) follows */
 667 };
 668
 669 extern int file_extra_cnt;
 670 extern int inc_recurse;
 671 extern int uid_ndx;
 672 extern int gid_ndx;
 673 extern int acls_ndx;
 674 extern int xattrs_ndx;
 675
 676 #define FILE_STRUCT_LEN (offsetof(struct file_struct, basename))
 677 #define EXTRA_LEN (sizeof (union file_extras))
 678 #define PTR_EXTRA_CNT ((sizeof (char *) + EXTRA_LEN - 1) / EXTRA_LEN)
 679 #define DEV_EXTRA_CNT 2
 680 #define DIRNODE_EXTRA_CNT 3
 681 #define SUM_EXTRA_CNT ((MAX_DIGEST_LEN + EXTRA_LEN - 1) / EXTRA_LEN)
 682
 683 #define REQ_EXTRA(f,ndx) ((union file_extras*)(f) - (ndx))
 684 #define OPT_EXTRA(f,bump) ((union file_extras*)(f) - file_extra_cnt - 1 - (bump))
 685
 686 #define NSEC_BUMP(f) ((f)->flags & FLAG_MOD_NSEC ? 1 : 0)
 687 #define LEN64_BUMP(f) ((f)->flags & FLAG_LENGTH64 ? 1 : 0)
 688 #define START_BUMP(f) (NSEC_BUMP(f) + LEN64_BUMP(f))
 689 #define HLINK_BUMP(f) ((f)->flags & (FLAG_HLINKED|FLAG_HLINK_DONE) ? inc_recurse+1 : 0)
 690 #define ACL_BUMP(f) (acls_ndx ? 1 : 0)
 691
 692 /* The length applies to all items. */
 693 #if SIZEOF_INT64 < 8
 694 #define F_LENGTH(f) ((int64)(f)->len32)
 695 #else
 696 #define F_LENGTH(f) ((int64)(f)->len32 + ((f)->flags & FLAG_LENGTH64 \
 697                    ? (int64)OPT_EXTRA(f, NSEC_BUMP(f))->unum << 32 : 0))
 698 #endif
 699
 700 #define F_MOD_NSEC(f) ((f)->flags & FLAG_MOD_NSEC ? OPT_EXTRA(f, 0)->unum : 0)
 701
 702 /* If there is a symlink string, it is always right after the basename */
 703 #define F_SYMLINK(f) ((f)->basename + strlen((f)->basename) + 1)
 704
 705 /* The sending side always has this available: */
 706 #define F_PATHNAME(f) (*(const char**)REQ_EXTRA(f, PTR_EXTRA_CNT))
 707
 708 /* The receiving side always has this available: */
 709 #define F_DEPTH(f) REQ_EXTRA(f, 1)->num
 710
 711 /* When the associated option is on, all entries will have these present: */
 712 #define F_OWNER(f) REQ_EXTRA(f, uid_ndx)->unum
 713 #define F_GROUP(f) REQ_EXTRA(f, gid_ndx)->unum
 714 #define F_ACL(f) REQ_EXTRA(f, acls_ndx)->num
 715 #define F_XATTR(f) REQ_EXTRA(f, xattrs_ndx)->num
 716 #define F_NDX(f) REQ_EXTRA(f, unsort_ndx)->num
 717
 718 /* These items are per-entry optional: */
 719 #define F_HL_GNUM(f) OPT_EXTRA(f, START_BUMP(f))->num /* non-dirs */
 720 #define F_HL_PREV(f) OPT_EXTRA(f, START_BUMP(f)+inc_recurse)->num /* non-dirs */
 721 #define F_DIR_NODE_P(f) (&OPT_EXTRA(f, START_BUMP(f) \
 722                                 + DIRNODE_EXTRA_CNT - 1)->num) /* sender dirs */
 723 #define F_DIR_RELNAMES_P(f) (&OPT_EXTRA(f, START_BUMP(f) + DIRNODE_EXTRA_CNT \
 724                                 + PTR_EXTRA_CNT - 1)->num) /* sender dirs */
 725 #define F_DIR_DEFACL(f) OPT_EXTRA(f, START_BUMP(f))->unum /* receiver dirs */
 726 #define F_DIR_DEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + ACL_BUMP(f) \
 727                                 + DEV_EXTRA_CNT - 1)->unum) /* receiver dirs */
 728
 729 /* This optional item might follow an F_HL_*() item. */
 730 #define F_RDEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) + DEV_EXTRA_CNT - 1)->unum)
 731
 732 /* The sum is only present on regular files. */
 733 #define F_SUM(f) ((char*)OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) \
 734                                     + SUM_EXTRA_CNT - 1))
 735
 736 /* Some utility defines: */
 737 #define F_IS_ACTIVE(f) (f)->basename[0]
 738 #define F_IS_HLINKED(f) ((f)->flags & FLAG_HLINKED)
 739
 740 #define F_HLINK_NOT_FIRST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_FIRST)
 741 #define F_HLINK_NOT_LAST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_LAST)
 742
 743 /* These access the F_DIR_DEV_P() and F_RDEV_P() values: */
 744 #define DEV_MAJOR(a) (a)[0]
 745 #define DEV_MINOR(a) (a)[1]
 746
 747 /* These access the F_DIRS_NODE_P() values: */
 748 #define DIR_PARENT(a) (a)[0]
 749 #define DIR_FIRST_CHILD(a) (a)[1]
 750 #define DIR_NEXT_SIBLING(a) (a)[2]
 751
 752 /*
 753  * Start the flist array at FLIST_START entries and grow it
 754  * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
 755  */
 756 #define FLIST_START     (32 * 1024)
 757 #define FLIST_LINEAR    (FLIST_START * 512)
 758
 759 /*
 760  * Extent size for allocation pools: A minimum size of 128KB
 761  * is needed to mmap them so that freeing will release the
 762  * space to the OS.
 763  *
 764  * Larger sizes reduce leftover fragments and speed free calls
 765  * (when they happen). Smaller sizes increase the chance of
 766  * freed allocations freeing whole extents.
 767  */
 768 #define NORMAL_EXTENT   (256 * 1024)
 769 #define SMALL_EXTENT    (128 * 1024)
 770
 771 #define FLIST_TEMP      (1<<1)
 772
 773 struct file_list {
 774         struct file_list *next, *prev;
 775         struct file_struct **files, **sorted;
 776         alloc_pool_t file_pool;
 777         void *pool_boundary;
 778         int used, malloced;
 779         int low, high;  /* 0-relative index values excluding empties */
 780         int ndx_start;  /* the start offset for inc_recurse mode */
 781         int flist_num;  /* 1-relative file_list number or 0 */
 782         int parent_ndx; /* dir_flist index of parent directory */
 783         int in_progress, to_redo;
 784 };
 785
 786 #define SUMFLG_SAME_OFFSET      (1<<0)
 787
 788 struct sum_buf {
 789         OFF_T offset;           /**< offset in file of this chunk */
 790         int32 len;              /**< length of chunk of file */
 791         uint32 sum1;            /**< simple checksum */
 792         int32 chain;            /**< next hash-table collision */
 793         short flags;            /**< flag bits */
 794         char sum2[SUM_LENGTH];  /**< checksum  */
 795 };
 796
 797 struct sum_struct {
 798         OFF_T flength;          /**< total file length */
 799         struct sum_buf *sums;   /**< points to info for each chunk */
 800         int32 count;            /**< how many chunks */
 801         int32 blength;          /**< block_length */
 802         int32 remainder;        /**< flength % block_length */
 803         int s2length;           /**< sum2_length */
 804 };
 805
 806 struct map_struct {
 807         OFF_T file_size;        /* File size (from stat)                */
 808         OFF_T p_offset;         /* Window start                         */
 809         OFF_T p_fd_offset;      /* offset of cursor in fd ala lseek     */
 810         char *p;                /* Window pointer                       */
 811         int32 p_size;           /* Largest window size we allocated     */
 812         int32 p_len;            /* Latest (rounded) window size         */
 813         int32 def_window_size;  /* Default window size                  */
 814         int fd;                 /* File Descriptor                      */
 815         int status;             /* first errno from read errors         */
 816 };
 817
 818 #define FILTRULE_WILD           (1<<0) /* pattern has '*', '[', and/or '?' */
 819 #define FILTRULE_WILD2          (1<<1) /* pattern has '**' */
 820 #define FILTRULE_WILD2_PREFIX   (1<<2) /* pattern starts with "**" */
 821 #define FILTRULE_WILD3_SUFFIX   (1<<3) /* pattern ends with "***" */
 822 #define FILTRULE_ABS_PATH       (1<<4) /* path-match on absolute path */
 823 #define FILTRULE_INCLUDE        (1<<5) /* this is an include, not an exclude */
 824 #define FILTRULE_DIRECTORY      (1<<6) /* this matches only directories */
 825 #define FILTRULE_WORD_SPLIT     (1<<7) /* split rules on whitespace */
 826 #define FILTRULE_NO_INHERIT     (1<<8) /* don't inherit these rules */
 827 #define FILTRULE_NO_PREFIXES    (1<<9) /* parse no prefixes from patterns */
 828 #define FILTRULE_MERGE_FILE     (1<<10)/* specifies a file to merge */
 829 #define FILTRULE_PERDIR_MERGE   (1<<11)/* merge-file is searched per-dir */
 830 #define FILTRULE_EXCLUDE_SELF   (1<<12)/* merge-file name should be excluded */
 831 #define FILTRULE_FINISH_SETUP   (1<<13)/* per-dir merge file needs setup */
 832 #define FILTRULE_NEGATE         (1<<14)/* rule matches when pattern does not */
 833 #define FILTRULE_CVS_IGNORE     (1<<15)/* rule was -C or :C */
 834 #define FILTRULE_SENDER_SIDE    (1<<16)/* rule applies to the sending side */
 835 #define FILTRULE_RECEIVER_SIDE  (1<<17)/* rule applies to the receiving side */
 836 #define FILTRULE_CLEAR_LIST     (1<<18)/* this item is the "!" token */
 837 #define FILTRULE_PERISHABLE     (1<<19)/* perishable if parent dir goes away */
 838
 839 #define FILTRULES_SIDES (FILTRULE_SENDER_SIDE | FILTRULE_RECEIVER_SIDE)
 840
 841 typedef struct filter_struct {
 842         struct filter_struct *next;
 843         char *pattern;
 844         uint32 rflags;
 845         union {
 846                 int slash_cnt;
 847                 struct filter_list_struct *mergelist;
 848         } u;
 849 } filter_rule;
 850
 851 typedef struct filter_list_struct {
 852         filter_rule *head;
 853         filter_rule *tail;
 854         filter_rule *parent_dirscan_head;
 855         char *debug_type;
 856 } filter_rule_list;
 857
 858 struct stats {
 859         int64 total_size;
 860         int64 total_transferred_size;
 861         int64 total_written;
 862         int64 total_read;
 863         int64 literal_data;
 864         int64 matched_data;
 865         int64 flist_buildtime;
 866         int64 flist_xfertime;
 867         int64 flist_size;
 868         int num_files, num_dirs, num_symlinks, num_devices, num_specials;
 869         int created_files, created_dirs, created_symlinks, created_devices, created_specials;
 870         int deleted_files, deleted_dirs, deleted_symlinks, deleted_devices, deleted_specials;
 871         int xferred_files;
 872 };
 873
 874 struct chmod_mode_struct;
 875
 876 struct flist_ndx_item {
 877         struct flist_ndx_item *next;
 878         int ndx;
 879 };
 880
 881 typedef struct {
 882         struct flist_ndx_item *head, *tail;
 883 } flist_ndx_list;
 884
 885 #define EMPTY_ITEM_LIST {NULL, 0, 0}
 886
 887 typedef struct {
 888         void *items;
 889         size_t count;
 890         size_t malloced;
 891 } item_list;
 892
 893 #define EXPAND_ITEM_LIST(lp, type, incr) \
 894         (type*)expand_item_list(lp, sizeof (type), #type, incr)
 895
 896 #define EMPTY_XBUF {NULL, 0, 0, 0}
 897
 898 typedef struct {
 899         char *buf;
 900         size_t pos;  /* pos = read pos in the buf */
 901         size_t len;  /* len = chars following pos */
 902         size_t size; /* size = total space in buf */
 903 } xbuf;
 904
 905 #define INIT_XBUF(xb, str, ln, sz) (xb).buf = (str), (xb).len = (ln), (xb).size = (sz), (xb).pos = 0
 906 #define INIT_XBUF_STRLEN(xb, str) (xb).buf = (str), (xb).len = strlen((xb).buf), (xb).size = (size_t)-1, (xb).pos = 0
 907 /* This one is used to make an output xbuf based on a char[] buffer: */
 908 #define INIT_CONST_XBUF(xb, bf) (xb).buf = (bf), (xb).size = sizeof (bf), (xb).len = (xb).pos = 0
 909
 910 #define ICB_EXPAND_OUT (1<<0)
 911 #define ICB_INCLUDE_BAD (1<<1)
 912 #define ICB_INCLUDE_INCOMPLETE (1<<2)
 913 #define ICB_CIRCULAR_OUT (1<<3)
 914 #define ICB_INIT (1<<4)
 915
 916 #define IOBUF_KEEP_BUFS 0
 917 #define IOBUF_FREE_BUFS 1
 918
 919 #define MPLX_SWITCHING IOBUF_KEEP_BUFS
 920 #define MPLX_ALL_DONE IOBUF_FREE_BUFS
 921 #define MPLX_TO_BUFFERED 2
 922
 923 #define RL_EOL_NULLS (1<<0)
 924 #define RL_DUMP_COMMENTS (1<<1)
 925 #define RL_CONVERT (1<<2)
 926
 927 typedef struct {
 928         char name_type;
 929         char fname[1]; /* has variable size */
 930 } relnamecache;
 931
 932 #include "byteorder.h"
 933 #include "lib/mdigest.h"
 934 #include "lib/wildmatch.h"
 935 #include "lib/permstring.h"
 936 #include "lib/addrinfo.h"
 937
 938 #ifndef __GNUC__
 939 #define __attribute__(x)
 940 #else
 941 # if __GNUC__ <= 2
 942 # define NORETURN
 943 # endif
 944 #endif
 945
 946 #define UNUSED(x) x __attribute__((__unused__))
 947 #ifndef NORETURN
 948 #define NORETURN __attribute__((__noreturn__))
 949 #endif
 950
 951 typedef struct {
 952     STRUCT_STAT st;
 953 #ifdef SUPPORT_ACLS
 954     struct rsync_acl *acc_acl; /* access ACL */
 955     struct rsync_acl *def_acl; /* default ACL */
 956 #endif
 957 #ifdef SUPPORT_XATTRS
 958     item_list *xattr;
 959 #endif
 960 } stat_x;
 961
 962 #define ACL_READY(sx) ((sx).acc_acl != NULL)
 963 #define XATTR_READY(sx) ((sx).xattr != NULL)
 964
 965 #include "proto.h"
 966
 967 #ifndef SUPPORT_XATTRS
 968 #define x_stat(fn,fst,xst) do_stat(fn,fst)
 969 #define x_lstat(fn,fst,xst) do_lstat(fn,fst)
 970 #define x_fstat(fd,fst,xst) do_fstat(fd,fst)
 971 #endif
 972
 973 /* We have replacement versions of these if they're missing. */
 974 #ifndef HAVE_ASPRINTF
 975 int asprintf(char **ptr, const char *format, ...);
 976 #endif
 977
 978 #ifndef HAVE_VASPRINTF
 979 int vasprintf(char **ptr, const char *format, va_list ap);
 980 #endif
 981
 982 #if !defined HAVE_VSNPRINTF || !defined HAVE_C99_VSNPRINTF
 983 #define vsnprintf rsync_vsnprintf
 984 int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
 985 #endif
 986
 987 #if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF
 988 #define snprintf rsync_snprintf
 989 int snprintf(char *str, size_t count, const char *fmt,...);
 990 #endif
 991
 992
 993 #ifndef HAVE_STRERROR
 994 extern char *sys_errlist[];
 995 #define strerror(i) sys_errlist[i]
 996 #endif
 997
 998 #ifndef HAVE_STRCHR
 999 # define strchr                 index
1000 # define strrchr                rindex
1001 #endif
1002
1003 #ifndef HAVE_ERRNO_DECL
1004 extern int errno;
1005 #endif
1006
1007 #ifdef HAVE_READLINK
1008 #define SUPPORT_LINKS 1
1009 #ifndef NO_SYMLINK_XATTRS
1010 #define do_readlink(path, buf, bufsiz) readlink(path, buf, bufsiz)
1011 #endif
1012 #endif
1013 #ifdef HAVE_LINK
1014 #define SUPPORT_HARD_LINKS 1
1015 #endif
1016
1017 #ifdef HAVE_SIGACTION
1018 #define SIGACTION(n,h) sigact.sa_handler=(h), sigaction((n),&sigact,NULL)
1019 #define signal(n,h) we_need_to_call_SIGACTION_not_signal(n,h)
1020 #else
1021 #define SIGACTION(n,h) signal(n,h)
1022 #endif
1023
1024 #ifndef EWOULDBLOCK
1025 #define EWOULDBLOCK EAGAIN
1026 #endif
1027
1028 #ifndef STDIN_FILENO
1029 #define STDIN_FILENO 0
1030 #endif
1031
1032 #ifndef STDOUT_FILENO
1033 #define STDOUT_FILENO 1
1034 #endif
1035
1036 #ifndef STDERR_FILENO
1037 #define STDERR_FILENO 2
1038 #endif
1039
1040 #ifndef S_IRUSR
1041 #define S_IRUSR 0400
1042 #endif
1043
1044 #ifndef S_IWUSR
1045 #define S_IWUSR 0200
1046 #endif
1047
1048 #ifndef ACCESSPERMS
1049 #define ACCESSPERMS 0777
1050 #endif
1051
1052 #ifndef S_ISVTX
1053 #define S_ISVTX 0
1054 #endif
1055
1056 #define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
1057
1058 #ifndef _S_IFMT
1059 #define _S_IFMT        0170000
1060 #endif
1061
1062 #ifndef _S_IFLNK
1063 #define _S_IFLNK  0120000
1064 #endif
1065
1066 #ifndef S_ISLNK
1067 #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
1068 #endif
1069
1070 #ifndef S_ISBLK
1071 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
1072 #endif
1073
1074 #ifndef S_ISCHR
1075 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
1076 #endif
1077
1078 #ifndef S_ISSOCK
1079 #ifdef _S_IFSOCK
1080 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
1081 #else
1082 #define S_ISSOCK(mode) (0)
1083 #endif
1084 #endif
1085
1086 #ifndef S_ISFIFO
1087 #ifdef _S_IFIFO
1088 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
1089 #else
1090 #define S_ISFIFO(mode) (0)
1091 #endif
1092 #endif
1093
1094 #ifndef S_ISDIR
1095 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
1096 #endif
1097
1098 #ifndef S_ISREG
1099 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
1100 #endif
1101
1102 /* work out what fcntl flag to use for non-blocking */
1103 #ifdef O_NONBLOCK
1104 # define NONBLOCK_FLAG O_NONBLOCK
1105 #elif defined SYSV
1106 # define NONBLOCK_FLAG O_NDELAY
1107 #else
1108 # define NONBLOCK_FLAG FNDELAY
1109 #endif
1110
1111 #ifndef INADDR_LOOPBACK
1112 #define INADDR_LOOPBACK 0x7f000001
1113 #endif
1114
1115 #ifndef INADDR_NONE
1116 #define INADDR_NONE 0xffffffff
1117 #endif
1118
1119 #define IS_SPECIAL(mode) (S_ISSOCK(mode) || S_ISFIFO(mode))
1120 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode))
1121
1122 #define PRESERVE_FILE_TIMES     (1<<0)
1123 #define PRESERVE_DIR_TIMES      (1<<1)
1124 #define PRESERVE_LINK_TIMES     (1<<2)
1125
1126 /* Initial mask on permissions given to temporary files.  Mask off setuid
1127      bits and group access because of potential race-condition security
1128      holes, and mask other access because mode 707 is bizarre */
1129 #define INITACCESSPERMS 0700
1130
1131 /* handler for null strings in printf format */
1132 #define NS(s) ((s)?(s):"<NULL>")
1133
1134 /* Convenient wrappers for malloc and realloc.  Use them. */
1135 #define new(type) ((type*)malloc(sizeof (type)))
1136 #define new0(type) ((type*)calloc(1, sizeof (type)))
1137 #define new_array(type, num) ((type*)_new_array((num), sizeof (type), 0))
1138 #define new_array0(type, num) ((type*)_new_array((num), sizeof (type), 1))
1139 #define realloc_array(ptr, type, num) ((type*)_realloc_array((ptr), sizeof(type), (num)))
1140
1141 /* use magic gcc attributes to catch format errors */
1142  void rprintf(enum logcode , const char *, ...)
1143      __attribute__((format (printf, 2, 3)))
1144 ;
1145
1146 /* This is just like rprintf, but it also tries to print some
1147  * representation of the error code.  Normally errcode = errno. */
1148 void rsyserr(enum logcode, int, const char *, ...)
1149      __attribute__((format (printf, 3, 4)))
1150      ;
1151
1152 /* Make sure that the O_BINARY flag is defined. */
1153 #ifndef O_BINARY
1154 #define O_BINARY 0
1155 #endif
1156
1157 #ifndef HAVE_STRLCPY
1158 size_t strlcpy(char *d, const char *s, size_t bufsize);
1159 #endif
1160
1161 #ifndef HAVE_STRLCAT
1162 size_t strlcat(char *d, const char *s, size_t bufsize);
1163 #endif
1164
1165 #ifndef WEXITSTATUS
1166 #define WEXITSTATUS(stat)       ((int)(((stat)>>8)&0xFF))
1167 #endif
1168 #ifndef WIFEXITED
1169 #define WIFEXITED(stat)         ((int)((stat)&0xFF) == 0)
1170 #endif
1171
1172 #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
1173
1174 #ifdef HAVE_GETEUID
1175 #define MY_UID() geteuid()
1176 #else
1177 #define MY_UID() getuid()
1178 #endif
1179
1180 #ifdef HAVE_GETEGID
1181 #define MY_GID() getegid()
1182 #else
1183 #define MY_GID() getgid()
1184 #endif
1185
1186 #ifdef FORCE_FD_ZERO_MEMSET
1187 #undef FD_ZERO
1188 #define FD_ZERO(fdsetp) memset(fdsetp, 0, sizeof (fd_set))
1189 #endif
1190
1191 extern short info_levels[], debug_levels[];
1192
1193 #define INFO_GTE(flag, lvl) (info_levels[INFO_##flag] >= (lvl))
1194 #define INFO_EQ(flag, lvl) (info_levels[INFO_##flag] == (lvl))
1195 #define DEBUG_GTE(flag, lvl) (debug_levels[DEBUG_##flag] >= (lvl))
1196 #define DEBUG_EQ(flag, lvl) (debug_levels[DEBUG_##flag] == (lvl))
1197
1198 #define INFO_BACKUP 0
1199 #define INFO_COPY (INFO_BACKUP+1)
1200 #define INFO_DEL (INFO_COPY+1)
1201 #define INFO_FLIST (INFO_DEL+1)
1202 #define INFO_MISC (INFO_FLIST+1)
1203 #define INFO_MOUNT (INFO_MISC+1)
1204 #define INFO_NAME (INFO_MOUNT+1)
1205 #define INFO_PROGRESS (INFO_NAME+1)
1206 #define INFO_REMOVE (INFO_PROGRESS+1)
1207 #define INFO_SKIP (INFO_REMOVE+1)
1208 #define INFO_STATS (INFO_SKIP+1)
1209 #define INFO_SYMSAFE (INFO_STATS+1)
1210
1211 #define COUNT_INFO (INFO_SYMSAFE+1)
1212
1213 #define DEBUG_ACL 0
1214 #define DEBUG_BACKUP (DEBUG_ACL+1)
1215 #define DEBUG_BIND (DEBUG_BACKUP+1)
1216 #define DEBUG_CHDIR (DEBUG_BIND+1)
1217 #define DEBUG_CONNECT (DEBUG_CHDIR+1)
1218 #define DEBUG_CMD (DEBUG_CONNECT+1)
1219 #define DEBUG_DEL (DEBUG_CMD+1)
1220 #define DEBUG_DELTASUM (DEBUG_DEL+1)
1221 #define DEBUG_DUP (DEBUG_DELTASUM+1)
1222 #define DEBUG_EXIT (DEBUG_DUP+1)
1223 #define DEBUG_FILTER (DEBUG_EXIT+1)
1224 #define DEBUG_FLIST (DEBUG_FILTER+1)
1225 #define DEBUG_FUZZY (DEBUG_FLIST+1)
1226 #define DEBUG_GENR (DEBUG_FUZZY+1)
1227 #define DEBUG_HASH (DEBUG_GENR+1)
1228 #define DEBUG_HLINK (DEBUG_HASH+1)
1229 #define DEBUG_ICONV (DEBUG_HLINK+1)
1230 #define DEBUG_IO (DEBUG_ICONV+1)
1231 #define DEBUG_OWN (DEBUG_IO+1)
1232 #define DEBUG_PROTO (DEBUG_OWN+1)
1233 #define DEBUG_RECV (DEBUG_PROTO+1)
1234 #define DEBUG_SEND (DEBUG_RECV+1)
1235 #define DEBUG_TIME (DEBUG_SEND+1)
1236
1237 #define COUNT_DEBUG (DEBUG_TIME+1)
1238
1239 #ifndef HAVE_INET_NTOP
1240 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
1241 #endif
1242
1243 #ifndef HAVE_INET_PTON
1244 int inet_pton(int af, const char *src, void *dst);
1245 #endif
1246
1247 #ifdef MAINTAINER_MODE
1248 const char *get_panic_action(void);
1249 #endif