rsync.h

   1 /*
   2    Copyright (C) Andrew Tridgell 1996
   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 BLOCK_SIZE 700
  21 #define RSYNC_RSH_ENV "RSYNC_RSH"
  22
  23 #define RSYNC_NAME "rsync"
  24 #define RSYNCD_CONF "/etc/rsyncd.conf"
  25
  26 #define BACKUP_SUFFIX "~"
  27
  28 /* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
  29    imcompatible with older versions :-( */
  30 #define CHAR_OFFSET 0
  31
  32
  33 #define FLAG_DELETE (1<<0)
  34 #define SAME_MODE (1<<1)
  35 #define SAME_RDEV (1<<2)
  36 #define SAME_UID (1<<3)
  37 #define SAME_GID (1<<4)
  38 #define SAME_DIR (1<<5)
  39 #define SAME_NAME SAME_DIR
  40 #define LONG_NAME (1<<6)
  41 #define SAME_TIME (1<<7)
  42
  43 /* update this if you make incompatible changes */
  44 #define PROTOCOL_VERSION 19
  45 #define MIN_PROTOCOL_VERSION 11
  46 #define MAX_PROTOCOL_VERSION 30
  47
  48 #define RSYNC_PORT 873
  49
  50 #define SPARSE_WRITE_SIZE (1024)
  51 #define WRITE_SIZE (32*1024)
  52 #define CHUNK_SIZE (32*1024)
  53 #define MAX_MAP_SIZE (1*1024*1024)
  54 #define IO_BUFFER_SIZE (4092)
  55 #define MAX_READ_BUFFER (1024*1024)
  56
  57 #define MAX_ARGS 1000
  58
  59 #define MPLEX_BASE 7
  60 #define FERROR 1
  61 #define FINFO 2
  62
  63 #include "config.h"
  64
  65 #if HAVE_REMSH
  66 #define RSYNC_RSH "remsh"
  67 #else
  68 #define RSYNC_RSH "rsh"
  69 #endif
  70
  71 #include <sys/types.h>
  72 #ifdef HAVE_UNISTD_H
  73 #include <unistd.h>
  74 #endif
  75 #include <stdio.h>
  76 #include <stddef.h>
  77
  78 #ifdef HAVE_SYS_PARAM_H
  79 #include <sys/param.h>
  80 #endif
  81
  82 #ifdef HAVE_STDLIB_H
  83 #include <stdlib.h>
  84 #endif
  85
  86 #ifdef HAVE_SYS_SOCKET_H
  87 #include <sys/socket.h>
  88 #endif
  89
  90 #ifdef HAVE_STRING_H
  91 #include <string.h>
  92 #endif
  93
  94 #ifdef HAVE_MALLOC_H
  95 #include <malloc.h>
  96 #endif
  97
  98 #ifdef TIME_WITH_SYS_TIME
  99 #include <sys/time.h>
 100 #include <time.h>
 101 #else
 102 #ifdef HAVE_SYS_TIME_H
 103 #include <sys/time.h>
 104 #else
 105 #include <time.h>
 106 #endif
 107 #endif
 108
 109 #ifdef HAVE_FCNTL_H
 110 #include <fcntl.h>
 111 #else
 112 #ifdef HAVE_SYS_FCNTL_H
 113 #include <sys/fcntl.h>
 114 #endif
 115 #endif
 116
 117 #include <sys/stat.h>
 118
 119 #ifdef HAVE_SYS_IOCTL_H
 120 #include <sys/ioctl.h>
 121 #endif
 122
 123 #ifdef HAVE_SYS_FILIO_H
 124 #include <sys/filio.h>
 125 #endif
 126
 127 #include <signal.h>
 128 #ifdef HAVE_SYS_WAIT_H
 129 #include <sys/wait.h>
 130 #endif
 131 #ifdef HAVE_CTYPE_H
 132 #include <ctype.h>
 133 #endif
 134 #ifdef HAVE_GRP_H
 135 #include <grp.h>
 136 #endif
 137 #include <errno.h>
 138
 139 #if defined(HAVE_MMAP) && defined(HAVE_MUNMAP)
 140 #include <sys/mman.h>
 141 #define USE_MMAP 1
 142 #endif
 143
 144 #ifdef HAVE_UTIME_H
 145 #include <utime.h>
 146 #endif
 147
 148 #ifdef HAVE_SYS_SELECT_H
 149 #include <sys/select.h>
 150 #endif
 151
 152 #ifdef HAVE_SYS_MODE_H
 153 /* apparently AIX needs this for S_ISLNK */
 154 #ifndef S_ISLNK
 155 #include <sys/mode.h>
 156 #endif
 157 #endif
 158
 159 #ifdef HAVE_FNMATCH
 160 #include <fnmatch.h>
 161 #else
 162 #include "lib/fnmatch.h"
 163 #endif
 164
 165 #ifdef HAVE_GETOPT_LONG
 166 #include <getopt.h>
 167 #else
 168 #include "lib/getopt.h"
 169 #endif
 170
 171 #ifdef HAVE_GLOB
 172 #include <glob.h>
 173 #endif
 174
 175 /* these are needed for the uid/gid mapping code */
 176 #include <pwd.h>
 177 #include <grp.h>
 178
 179 #include <stdarg.h>
 180 #include <netinet/in.h>
 181 #include <arpa/inet.h>
 182 #include <netdb.h>
 183 #include <syslog.h>
 184 #include <sys/file.h>
 185
 186 #if HAVE_DIRENT_H
 187 # include <dirent.h>
 188 #else
 189 # define dirent direct
 190 # if HAVE_SYS_NDIR_H
 191 #  include <sys/ndir.h>
 192 # endif
 193 # if HAVE_SYS_DIR_H
 194 #  include <sys/dir.h>
 195 # endif
 196 # if HAVE_NDIR_H
 197 #  include <ndir.h>
 198 # endif
 199 #endif
 200
 201 #ifdef HAVE_COMPAT_H
 202 #include <compat.h>
 203 #endif
 204
 205
 206 #ifndef S_IFLNK
 207 #define S_IFLNK  0120000
 208 #endif
 209
 210 #ifndef S_ISLNK
 211 #define S_ISLNK(mode) (((mode) & S_IFLNK) == S_IFLNK)
 212 #endif
 213
 214 #define BOOL int
 215
 216 #ifndef uchar
 217 #define uchar unsigned char
 218 #endif
 219
 220 #if HAVE_UNSIGNED_CHAR
 221 #define schar signed char
 222 #else
 223 #define schar char
 224 #endif
 225
 226 #ifndef int32
 227 #if (SIZEOF_INT == 4)
 228 #define int32 int
 229 #elif (SIZEOF_LONG == 4)
 230 #define int32 long
 231 #elif (SIZEOF_SHORT == 4)
 232 #define int32 short
 233 #endif
 234 #endif
 235
 236 #ifndef uint32
 237 #define uint32 unsigned int32
 238 #endif
 239
 240 #if HAVE_OFF64_T
 241 #define OFF_T off64_t
 242 #define STRUCT_STAT struct stat64
 243 #else
 244 #define OFF_T off_t
 245 #define STRUCT_STAT struct stat
 246 #endif
 247
 248 #if HAVE_OFF64_T
 249 #define int64 off64_t
 250 #elif (SIZEOF_LONG == 8)
 251 #define int64 long
 252 #elif (SIZEOF_INT == 8)
 253 #define int64 int
 254 #elif HAVE_LONGLONG
 255 #define int64 long long
 256 #else
 257 #define int64 off_t
 258 #define NO_INT64
 259 #endif
 260
 261 #ifndef MIN
 262 #define MIN(a,b) ((a)<(b)?(a):(b))
 263 #endif
 264
 265 #ifndef MAX
 266 #define MAX(a,b) ((a)>(b)?(a):(b))
 267 #endif
 268
 269 /* the length of the md4 checksum */
 270 #define MD4_SUM_LENGTH 16
 271 #define SUM_LENGTH 16
 272
 273 #ifndef MAXPATHLEN
 274 #define MAXPATHLEN 1024
 275 #endif
 276
 277 #ifndef INADDR_NONE
 278 #define INADDR_NONE 0xffffffff
 279 #endif
 280
 281 struct file_struct {
 282         unsigned flags;
 283         time_t modtime;
 284         OFF_T length;
 285         mode_t mode;
 286         ino_t inode;
 287         dev_t dev;
 288         dev_t rdev;
 289         uid_t uid;
 290         gid_t gid;
 291         char *basename;
 292         char *dirname;
 293         char *basedir;
 294         char *link;
 295         char *sum;
 296 };
 297
 298 struct file_list {
 299         int count;
 300         int malloced;
 301         struct file_struct **files;
 302 };
 303
 304 struct sum_buf {
 305   OFF_T offset;                 /* offset in file of this chunk */
 306   int len;                      /* length of chunk of file */
 307   int i;                        /* index of this chunk */
 308   uint32 sum1;                  /* simple checksum */
 309   char sum2[SUM_LENGTH];        /* checksum  */
 310 };
 311
 312 struct sum_struct {
 313   OFF_T flength;                /* total file length */
 314   int count;                    /* how many chunks */
 315   int remainder;                /* flength % block_length */
 316   int n;                        /* block_length */
 317   struct sum_buf *sums;         /* points to info for each chunk */
 318 };
 319
 320 struct map_struct {
 321         char *map,*p;
 322         int fd,p_size,p_len;
 323         OFF_T size, p_offset;
 324 };
 325
 326 struct exclude_struct {
 327         char *orig;
 328         char *pattern;
 329         int regular_exp;
 330         int include;
 331         int directory;
 332         int local;
 333 };
 334
 335 struct stats {
 336         int64 total_size;
 337         int64 total_transferred_size;
 338         int64 total_written;
 339         int64 total_read;
 340         int64 literal_data;
 341         int64 matched_data;
 342         int flist_size;
 343         int num_files;
 344         int num_transferred_files;
 345 };
 346
 347
 348 /* we need this function because of the silly way in which duplicate
 349    entries are handled in the file lists - we can't change this
 350    without breaking existing versions */
 351 static inline int flist_up(struct file_list *flist, int i)
 352 {
 353         while (!flist->files[i]->basename) i++;
 354         return i;
 355 }
 356
 357 #include "byteorder.h"
 358 #include "version.h"
 359 #include "proto.h"
 360 #include "md4.h"
 361
 362 #if !HAVE_STRERROR
 363 extern char *sys_errlist[];
 364 #define strerror(i) sys_errlist[i]
 365 #endif
 366
 367 #ifndef HAVE_STRCHR
 368 # define strchr                 index
 369 # define strrchr                rindex
 370 #endif
 371
 372 #ifndef HAVE_ERRNO_DECL
 373 extern int errno;
 374 #endif
 375
 376 #define SUPPORT_LINKS HAVE_READLINK
 377 #define SUPPORT_HARD_LINKS HAVE_LINK
 378
 379 #ifndef HAVE_LCHOWN
 380 #define lchown chown
 381 #endif
 382
 383 #define SIGNAL_CAST (RETSIGTYPE (*)())
 384
 385 #ifndef EWOULDBLOCK
 386 #define EWOULDBLOCK EAGAIN
 387 #endif
 388
 389 #ifndef STDIN_FILENO
 390 #define STDIN_FILENO 0
 391 #endif
 392
 393 #ifndef STDOUT_FILENO
 394 #define STDOUT_FILENO 1
 395 #endif
 396
 397 #ifndef STDERR_FILENO
 398 #define STDERR_FILENO 2
 399 #endif
 400
 401 #ifndef S_IWUSR
 402 #define S_IWUSR 0200
 403 #endif
 404
 405 #ifndef S_ISBLK
 406 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
 407 #endif
 408
 409 #ifndef S_ISCHR
 410 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
 411 #endif
 412
 413 #ifndef S_ISSOCK
 414 #ifdef _S_IFSOCK
 415 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
 416 #else
 417 #define S_ISSOCK(mode) (0)
 418 #endif
 419 #endif
 420
 421 #ifndef S_ISFIFO
 422 #ifdef _S_IFIFO
 423 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
 424 #else
 425 #define S_ISFIFO(mode) (0)
 426 #endif
 427 #endif
 428
 429 #ifndef S_ISDIR
 430 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
 431 #endif
 432
 433 #ifndef S_ISREG
 434 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
 435 #endif
 436
 437
 438 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) || S_ISFIFO(mode))
 439
 440 #ifndef ACCESSPERMS
 441 #define ACCESSPERMS 0777
 442 #endif