rsync.h

   1 /*
   2    Copyright (C) by Andrew Tridgell 1996, 2000
   3    Copyright (C) Paul Mackerras 1996
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #define False 0
  21 #define True 1
  22
  23 #define BLOCK_SIZE 700
  24 #define RSYNC_RSH_ENV "RSYNC_RSH"
  25
  26 #define RSYNC_NAME "rsync"
  27 #define RSYNCD_CONF "/etc/rsyncd.conf"
  28
  29 #define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
  30 #define URL_PREFIX "rsync://"
  31
  32 #define BACKUP_SUFFIX "~"
  33
  34 /* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
  35    incompatible with older versions :-( */
  36 #define CHAR_OFFSET 0
  37
  38
  39 #define FLAG_DELETE (1<<0)
  40 #define SAME_MODE (1<<1)
  41 #define SAME_RDEV (1<<2)
  42 #define SAME_UID (1<<3)
  43 #define SAME_GID (1<<4)
  44 #define SAME_DIR (1<<5)
  45 #define SAME_NAME SAME_DIR
  46 #define LONG_NAME (1<<6)
  47 #define SAME_TIME (1<<7)
  48
  49 /* update this if you make incompatible changes */
  50 #define PROTOCOL_VERSION 24
  51 #define MIN_PROTOCOL_VERSION 15
  52 #define MAX_PROTOCOL_VERSION 30
  53
  54 #define RSYNC_PORT 873
  55
  56 #define SPARSE_WRITE_SIZE (1024)
  57 #define WRITE_SIZE (32*1024)
  58 #define CHUNK_SIZE (32*1024)
  59 #define MAX_MAP_SIZE (256*1024)
  60 #define IO_BUFFER_SIZE (4092)
  61
  62 #define MAX_ARGS 1000
  63
  64 #define MPLEX_BASE 7
  65
  66 enum logcode {FNONE=0, FERROR=1, FINFO=2, FLOG=3 };
  67
  68 #include "errcode.h"
  69
  70 #include "config.h"
  71
  72 #if HAVE_REMSH
  73 #define RSYNC_RSH "remsh"
  74 #else
  75 #define RSYNC_RSH "rsh"
  76 #endif
  77
  78 #include <sys/types.h>
  79
  80 #ifdef HAVE_GETOPT_LONG
  81 #include <getopt.h>
  82 #else
  83 #include "lib/getopt.h"
  84 #endif
  85
  86 #ifdef HAVE_UNISTD_H
  87 #include <unistd.h>
  88 #endif
  89 #include <stdio.h>
  90 #include <stddef.h>
  91
  92 #ifdef HAVE_SYS_PARAM_H
  93 #include <sys/param.h>
  94 #endif
  95
  96 #ifdef HAVE_STDLIB_H
  97 #include <stdlib.h>
  98 #endif
  99
 100 #ifdef HAVE_SYS_SOCKET_H
 101 #include <sys/socket.h>
 102 #endif
 103
 104 #ifdef HAVE_STRING_H
 105 #include <string.h>
 106 #endif
 107
 108 #ifdef HAVE_MALLOC_H
 109 #include <malloc.h>
 110 #endif
 111
 112 #ifdef TIME_WITH_SYS_TIME
 113 #include <sys/time.h>
 114 #include <time.h>
 115 #else
 116 #ifdef HAVE_SYS_TIME_H
 117 #include <sys/time.h>
 118 #else
 119 #include <time.h>
 120 #endif
 121 #endif
 122
 123 #ifdef HAVE_FCNTL_H
 124 #include <fcntl.h>
 125 #else
 126 #ifdef HAVE_SYS_FCNTL_H
 127 #include <sys/fcntl.h>
 128 #endif
 129 #endif
 130
 131 #include <sys/stat.h>
 132
 133 #ifdef HAVE_SYS_IOCTL_H
 134 #include <sys/ioctl.h>
 135 #endif
 136
 137 #ifdef HAVE_SYS_FILIO_H
 138 #include <sys/filio.h>
 139 #endif
 140
 141 #include <signal.h>
 142 #ifdef HAVE_SYS_WAIT_H
 143 #include <sys/wait.h>
 144 #endif
 145 #ifdef HAVE_CTYPE_H
 146 #include <ctype.h>
 147 #endif
 148 #ifdef HAVE_GRP_H
 149 #include <grp.h>
 150 #endif
 151 #include <errno.h>
 152
 153 #ifdef HAVE_UTIME_H
 154 #include <utime.h>
 155 #endif
 156
 157 #ifdef HAVE_SYS_SELECT_H
 158 #include <sys/select.h>
 159 #endif
 160
 161 #ifdef HAVE_SYS_MODE_H
 162 /* apparently AIX needs this for S_ISLNK */
 163 #ifndef S_ISLNK
 164 #include <sys/mode.h>
 165 #endif
 166 #endif
 167
 168 #ifdef HAVE_FNMATCH
 169 #include <fnmatch.h>
 170 #else
 171 #include "lib/fnmatch.h"
 172 #endif
 173
 174 #ifdef HAVE_GLOB_H
 175 #include <glob.h>
 176 #endif
 177
 178 /* these are needed for the uid/gid mapping code */
 179 #include <pwd.h>
 180 #include <grp.h>
 181
 182 #include <stdarg.h>
 183 #include <netinet/in.h>
 184 #include <arpa/inet.h>
 185 #include <netdb.h>
 186 #include <syslog.h>
 187 #include <sys/file.h>
 188
 189 #if HAVE_DIRENT_H
 190 # include <dirent.h>
 191 #else
 192 # define dirent direct
 193 # if HAVE_SYS_NDIR_H
 194 #  include <sys/ndir.h>
 195 # endif
 196 # if HAVE_SYS_DIR_H
 197 #  include <sys/dir.h>
 198 # endif
 199 # if HAVE_NDIR_H
 200 #  include <ndir.h>
 201 # endif
 202 #endif
 203
 204 #ifdef HAVE_COMPAT_H
 205 #include <compat.h>
 206 #endif
 207
 208
 209 #define BOOL int
 210
 211 #ifndef uchar
 212 #define uchar unsigned char
 213 #endif
 214
 215 #if HAVE_UNSIGNED_CHAR
 216 #define schar signed char
 217 #else
 218 #define schar char
 219 #endif
 220
 221 #ifndef int32
 222 #if (SIZEOF_INT == 4)
 223 #define int32 int
 224 #elif (SIZEOF_LONG == 4)
 225 #define int32 long
 226 #elif (SIZEOF_SHORT == 4)
 227 #define int32 short
 228 #else
 229 /* I hope this works */
 230 #define int32 int
 231 #define LARGE_INT32
 232 #endif
 233 #endif
 234
 235 #ifndef uint32
 236 #define uint32 unsigned int32
 237 #endif
 238
 239 #if HAVE_OFF64_T
 240 #define OFF_T off64_t
 241 #define STRUCT_STAT struct stat64
 242 #else
 243 #define OFF_T off_t
 244 #define STRUCT_STAT struct stat
 245 #endif
 246
 247 #if HAVE_OFF64_T
 248 #define int64 off64_t
 249 #elif (SIZEOF_LONG == 8)
 250 #define int64 long
 251 #elif (SIZEOF_INT == 8)
 252 #define int64 int
 253 #elif HAVE_LONGLONG
 254 #define int64 long long
 255 #else
 256 #define int64 off_t
 257 #define NO_INT64
 258 #endif
 259
 260 #if HAVE_SHORT_INO_T
 261 #define INO_T uint32
 262 #else
 263 #define INO_T ino_t
 264 #endif
 265
 266 #ifndef MIN
 267 #define MIN(a,b) ((a)<(b)?(a):(b))
 268 #endif
 269
 270 #ifndef MAX
 271 #define MAX(a,b) ((a)>(b)?(a):(b))
 272 #endif
 273
 274 #ifndef MAXHOSTNAMELEN
 275 #define MAXHOSTNAMELEN 256
 276 #endif
 277
 278 /* the length of the md4 checksum */
 279 #define MD4_SUM_LENGTH 16
 280 #define SUM_LENGTH 16
 281
 282 #ifndef MAXPATHLEN
 283 #define MAXPATHLEN 1024
 284 #endif
 285
 286 #ifndef INADDR_NONE
 287 #define INADDR_NONE 0xffffffff
 288 #endif
 289
 290 struct file_struct {
 291         unsigned flags;
 292         time_t modtime;
 293         OFF_T length;
 294         mode_t mode;
 295         INO_T inode;
 296         dev_t dev;
 297         dev_t rdev;
 298         uid_t uid;
 299         gid_t gid;
 300         char *basename;
 301         char *dirname;
 302         char *basedir;
 303         char *link;
 304         char *sum;
 305 };
 306
 307
 308 #define ARENA_SIZE      (32 * 1024)
 309
 310 struct string_area {
 311         char *base;
 312         char *end;
 313         char *current;
 314         struct string_area *next;
 315 };
 316
 317 struct file_list {
 318         int count;
 319         int malloced;
 320         struct file_struct **files;
 321         struct string_area *string_area;
 322 };
 323
 324 struct sum_buf {
 325         OFF_T offset;           /* offset in file of this chunk */
 326         int len;                /* length of chunk of file */
 327         int i;                  /* index of this chunk */
 328         uint32 sum1;            /* simple checksum */
 329         char sum2[SUM_LENGTH];  /* checksum  */
 330 };
 331
 332 struct sum_struct {
 333   OFF_T flength;                /* total file length */
 334   int count;                    /* how many chunks */
 335   int remainder;                /* flength % block_length */
 336   int n;                        /* block_length */
 337   struct sum_buf *sums;         /* points to info for each chunk */
 338 };
 339
 340 struct map_struct {
 341         char *p;
 342         int fd,p_size,p_len;
 343         OFF_T file_size, p_offset, p_fd_offset;
 344 };
 345
 346 struct exclude_struct {
 347         char *pattern;
 348         int regular_exp;
 349         int fnmatch_flags;
 350         int include;
 351         int directory;
 352         int local;
 353 };
 354
 355 struct stats {
 356         int64 total_size;
 357         int64 total_transferred_size;
 358         int64 total_written;
 359         int64 total_read;
 360         int64 literal_data;
 361         int64 matched_data;
 362         int flist_size;
 363         int num_files;
 364         int num_transferred_files;
 365 };
 366
 367
 368 /* we need this function because of the silly way in which duplicate
 369    entries are handled in the file lists - we can't change this
 370    without breaking existing versions */
 371 static inline int flist_up(struct file_list *flist, int i)
 372 {
 373         while (!flist->files[i]->basename) i++;
 374         return i;
 375 }
 376
 377 #include "byteorder.h"
 378 #include "version.h"
 379 #include "proto.h"
 380 #include "lib/mdfour.h"
 381
 382 #if !HAVE_STRERROR
 383 extern char *sys_errlist[];
 384 #define strerror(i) sys_errlist[i]
 385 #endif
 386
 387 #ifndef HAVE_STRCHR
 388 # define strchr                 index
 389 # define strrchr                rindex
 390 #endif
 391
 392 #ifndef HAVE_ERRNO_DECL
 393 extern int errno;
 394 #endif
 395
 396 #define SUPPORT_LINKS HAVE_READLINK
 397 #define SUPPORT_HARD_LINKS HAVE_LINK
 398
 399 #ifndef HAVE_LCHOWN
 400 #define lchown chown
 401 #endif
 402
 403 #define SIGNAL_CAST (RETSIGTYPE (*)())
 404
 405 #ifndef EWOULDBLOCK
 406 #define EWOULDBLOCK EAGAIN
 407 #endif
 408
 409 #ifndef STDIN_FILENO
 410 #define STDIN_FILENO 0
 411 #endif
 412
 413 #ifndef STDOUT_FILENO
 414 #define STDOUT_FILENO 1
 415 #endif
 416
 417 #ifndef STDERR_FILENO
 418 #define STDERR_FILENO 2
 419 #endif
 420
 421 #ifndef S_IWUSR
 422 #define S_IWUSR 0200
 423 #endif
 424
 425 #ifndef _S_IFMT
 426 #define _S_IFMT        0170000
 427 #endif
 428
 429 #ifndef _S_IFLNK
 430 #define _S_IFLNK  0120000
 431 #endif
 432
 433 #ifndef S_ISLNK
 434 #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
 435 #endif
 436
 437 #ifndef S_ISBLK
 438 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
 439 #endif
 440
 441 #ifndef S_ISCHR
 442 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
 443 #endif
 444
 445 #ifndef S_ISSOCK
 446 #ifdef _S_IFSOCK
 447 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
 448 #else
 449 #define S_ISSOCK(mode) (0)
 450 #endif
 451 #endif
 452
 453 #ifndef S_ISFIFO
 454 #ifdef _S_IFIFO
 455 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
 456 #else
 457 #define S_ISFIFO(mode) (0)
 458 #endif
 459 #endif
 460
 461 #ifndef S_ISDIR
 462 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
 463 #endif
 464
 465 #ifndef S_ISREG
 466 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
 467 #endif
 468
 469 /* work out what fcntl flag to use for non-blocking */
 470 #ifdef O_NONBLOCK
 471 # define NONBLOCK_FLAG O_NONBLOCK
 472 #elif defined(SYSV)
 473 # define NONBLOCK_FLAG O_NDELAY
 474 #else
 475 # define NONBLOCK_FLAG FNDELAY
 476 #endif
 477
 478
 479 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) || S_ISFIFO(mode))
 480
 481 #ifndef ACCESSPERMS
 482 #define ACCESSPERMS 0777
 483 #endif
 484 /* Initial mask on permissions given to temporary files.  Mask off setuid
 485      bits and group access because of potential race-condition security
 486      holes, and mask other access because mode 707 is bizarre */
 487 #define INITACCESSPERMS 0700
 488
 489 /* handler for null strings in printf format */
 490 #define NS(s) ((s)?(s):"<NULL>")
 491
 492 /* use magic gcc attributes to catch format errors */
 493  void rprintf(enum logcode , const char *, ...)
 494 #ifdef __GNUC__
 495      __attribute__ ((format (printf, 2, 3)))
 496 #endif
 497 ;
 498
 499 /* This is just like rprintf, but it also tries to print some
 500  * representation of the error code.  Normally errcode = errno. */
 501 void rsyserr(enum logcode, int, const char *, ...)
 502 #ifdef __GNUC__
 503      __attribute__ ((format (printf, 3, 4)))
 504 #endif
 505      ;
 506
 507 #ifdef REPLACE_INET_NTOA
 508 #define inet_ntoa rep_inet_ntoa
 509 #endif
 510
 511
 512 #ifndef HAVE_STRLCPY
 513 size_t strlcpy(char *d, const char *s, size_t bufsize);
 514 #endif
 515
 516 #ifndef HAVE_STRLCAT
 517 size_t strlcat(char *d, const char *s, size_t bufsize);
 518 #endif
 519
 520 #ifndef WEXITSTATUS
 521 #define WEXITSTATUS(stat)       ((int)(((stat)>>8)&0xFF))
 522 #endif
 523
 524 #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)