2 Copyright (C) by Andrew Tridgell 1996, 2000
3 Copyright (C) Paul Mackerras 1996
4 Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #define BLOCK_SIZE 700
26 #define RSYNC_RSH_ENV "RSYNC_RSH"
28 #define RSYNC_NAME "rsync"
29 #define RSYNCD_SYSCONF "/etc/rsyncd.conf"
30 #define RSYNCD_USERCONF "rsyncd.conf"
32 #define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
33 #define URL_PREFIX "rsync://"
35 #define BACKUP_SUFFIX "~"
37 /* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
38 incompatible with older versions :-( */
42 #define FLAG_DELETE (1<<0)
43 #define SAME_MODE (1<<1)
44 #define SAME_RDEV (1<<2)
45 #define SAME_UID (1<<3)
46 #define SAME_GID (1<<4)
47 #define SAME_DIR (1<<5)
48 #define SAME_NAME SAME_DIR
49 #define LONG_NAME (1<<6)
50 #define SAME_TIME (1<<7)
52 /* update this if you make incompatible changes */
53 #define PROTOCOL_VERSION 26
55 /* We refuse to interoperate with versions that are not in this range.
56 * Note that we assume we'll work with later versions: the onus is on
57 * people writing them to make sure that they don't send us anything
58 * we won't understand.
60 * There are two possible explanations for the limit at thirty: either
61 * to allow new major-rev versions that do not interoperate with us,
62 * and (more likely) so that we can detect an attempt to connect rsync
63 * to a non-rsync server, which is unlikely to begin by sending a byte
64 * between 15 and 30. */
65 #define MIN_PROTOCOL_VERSION 15
66 #define MAX_PROTOCOL_VERSION 30
68 #define RSYNC_PORT 873
70 #define SPARSE_WRITE_SIZE (1024)
71 #define WRITE_SIZE (32*1024)
72 #define CHUNK_SIZE (32*1024)
73 #define MAX_MAP_SIZE (256*1024)
74 #define IO_BUFFER_SIZE (4092)
80 /* Log values. I *think* what these mean is: FLOG goes to the server
81 * logfile; FERROR and FINFO try to end up on the client, with
82 * different levels of filtering. */
83 enum logcode {FNONE=0, FERROR=1, FINFO=2, FLOG=3 };
89 /* The default RSYNC_RSH is always set in config.h, either to "remsh",
90 * "rsh", or otherwise something specified by the user. HAVE_REMSH
91 * controls parameter munging for HP/UX, etc. */
93 #include <sys/types.h>
101 #ifdef HAVE_SYS_PARAM_H
102 #include <sys/param.h>
109 #ifdef HAVE_SYS_SOCKET_H
110 #include <sys/socket.h>
121 #ifdef TIME_WITH_SYS_TIME
122 #include <sys/time.h>
125 #ifdef HAVE_SYS_TIME_H
126 #include <sys/time.h>
135 #ifdef HAVE_SYS_FCNTL_H
136 #include <sys/fcntl.h>
140 #include <sys/stat.h>
142 #ifdef HAVE_SYS_IOCTL_H
143 #include <sys/ioctl.h>
146 #ifdef HAVE_SYS_FILIO_H
147 #include <sys/filio.h>
151 #ifdef HAVE_SYS_WAIT_H
152 #include <sys/wait.h>
166 #ifdef HAVE_SYS_SELECT_H
167 #include <sys/select.h>
170 #ifdef HAVE_SYS_MODE_H
171 /* apparently AIX needs this for S_ISLNK */
173 #include <sys/mode.h>
180 #include "lib/fnmatch.h"
191 /* these are needed for the uid/gid mapping code */
196 #include <netinet/in.h>
197 #include <arpa/inet.h>
200 #include <sys/file.h>
205 # define dirent direct
207 # include <sys/ndir.h>
210 # include <sys/dir.h>
227 #define uchar unsigned char
230 #if HAVE_UNSIGNED_CHAR
231 #define schar signed char
237 #if (SIZEOF_INT == 4)
239 #elif (SIZEOF_LONG == 4)
241 #elif (SIZEOF_SHORT == 4)
244 /* I hope this works */
251 #define uint32 unsigned int32
255 #define OFF_T off64_t
256 #define STRUCT_STAT struct stat64
259 #define STRUCT_STAT struct stat
263 #define int64 off64_t
264 #elif (SIZEOF_LONG == 8)
266 #elif (SIZEOF_INT == 8)
269 #define int64 long long
271 /* As long as it gets... */
276 /* Starting from protocol version 26, we always use 64-bit
277 * ino_t and dev_t internally, even if this platform does not
278 * allow files to have 64-bit inums. That's because the
279 * receiver needs to find duplicate (dev,ino) tuples to detect
280 * hardlinks, and it might have files coming from a platform
281 * that has 64-bit inums.
283 * The only exception is if we're on a platform with no 64-bit type at
286 * Because we use read_longint() to get these off the wire, if you
287 * transfer devices or hardlinks with dev or inum > 2**32 to a machine
288 * with no 64-bit types then you will get an overflow error. Probably
289 * not many people have that combination of machines, and you can
290 * avoid it by not preserving hardlinks or not transferring device
291 * nodes. It's not clear that any other behaviour is better.
293 * Note that if you transfer devices from a 64-bit-devt machine (say,
294 * Solaris) to a 32-bit-devt machine (say, Linux-2.2/x86) then the
295 * device numbers will be truncated. But it's a kind of silly thing
298 * FIXME: In future, we should probable split the device number into
299 * major/minor, and transfer the two parts as 32-bit ints. That gives
300 * you somewhat more of a chance that they'll come from a big machine
301 * to a little one in a useful way.
303 * FIXME: Really we need an unsigned type, and we perhaps ought to
304 * cope with platforms on which this is an unsigned int or even a
307 #define INO64_T int64
308 #define DEV64_T int64
311 #define MIN(a,b) ((a)<(b)?(a):(b))
315 #define MAX(a,b) ((a)>(b)?(a):(b))
318 #ifndef MAXHOSTNAMELEN
319 #define MAXHOSTNAMELEN 256
322 /* the length of the md4 checksum */
323 #define MD4_SUM_LENGTH 16
324 #define SUM_LENGTH 16
327 #define MAXPATHLEN 1024
331 #define INADDR_NONE 0xffffffff
341 /** Device this file lives upon */
344 /** If this is a device node, the device number. */
356 #define ARENA_SIZE (32 * 1024)
362 struct string_area *next;
368 struct file_struct **files;
369 struct string_area *string_area;
373 OFF_T offset; /**< offset in file of this chunk */
374 int len; /**< length of chunk of file */
375 int i; /**< index of this chunk */
376 uint32 sum1; /**< simple checksum */
377 char sum2[SUM_LENGTH]; /**< checksum */
381 OFF_T flength; /**< total file length */
382 size_t count; /**< how many chunks */
383 size_t remainder; /**< flength % block_length */
384 size_t n; /**< block_length */
385 struct sum_buf *sums; /**< points to info for each chunk */
391 OFF_T file_size, p_offset, p_fd_offset;
394 struct exclude_struct {
405 int64 total_transferred_size;
412 int num_transferred_files;
416 /* we need this function because of the silly way in which duplicate
417 entries are handled in the file lists - we can't change this
418 without breaking existing versions */
419 static inline int flist_up(struct file_list *flist, int i)
421 while (!flist->files[i]->basename) i++;
425 #include "byteorder.h"
426 #include "lib/mdfour.h"
427 #include "lib/permstring.h"
428 #include "lib/addrinfo.h"
432 /* We have replacement versions of these if they're missing. */
433 #ifndef HAVE_ASPRINTF
434 int asprintf(char **ptr, const char *format, ...);
437 #ifndef HAVE_VASPRINTF
438 int vasprintf(char **ptr, const char *format, va_list ap);
441 #if !defined(HAVE_VSNPRINTF) && !defined(HAVE_C99_VSNPRINTF)
442 int vsnprintf (char *str, size_t count, const char *fmt, va_list args);
445 #if !defined(HAVE_SNPRINTF) && !defined(HAVE_C99_VSNPRINTF)
446 int snprintf(char *str,size_t count,const char *fmt,...);
451 extern char *sys_errlist[];
452 #define strerror(i) sys_errlist[i]
456 # define strchr index
457 # define strrchr rindex
460 #ifndef HAVE_ERRNO_DECL
464 #define SUPPORT_LINKS HAVE_READLINK
465 #define SUPPORT_HARD_LINKS HAVE_LINK
467 /* This could be bad on systems which have no lchown and where chown
468 * follows symbollic links. On such systems it might be better not to
469 * try to chown symlinks at all. */
474 #define SIGNAL_CAST (RETSIGTYPE (*)())
477 #define EWOULDBLOCK EAGAIN
481 #define STDIN_FILENO 0
484 #ifndef STDOUT_FILENO
485 #define STDOUT_FILENO 1
488 #ifndef STDERR_FILENO
489 #define STDERR_FILENO 2
497 #define _S_IFMT 0170000
501 #define _S_IFLNK 0120000
505 #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
509 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
513 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
518 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
520 #define S_ISSOCK(mode) (0)
526 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
528 #define S_ISFIFO(mode) (0)
533 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
537 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
540 /* work out what fcntl flag to use for non-blocking */
542 # define NONBLOCK_FLAG O_NONBLOCK
544 # define NONBLOCK_FLAG O_NDELAY
546 # define NONBLOCK_FLAG FNDELAY
549 #ifndef INADDR_LOOPBACK
550 #define INADDR_LOOPBACK 0x7f000001
554 #define INADDR_NONE 0xffffffff
557 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) || S_ISFIFO(mode))
560 #define ACCESSPERMS 0777
562 /* Initial mask on permissions given to temporary files. Mask off setuid
563 bits and group access because of potential race-condition security
564 holes, and mask other access because mode 707 is bizarre */
565 #define INITACCESSPERMS 0700
567 /* handler for null strings in printf format */
568 #define NS(s) ((s)?(s):"<NULL>")
570 #if !defined(__GNUC__) || defined(APPLE)
571 /* Apparently the OS X port of gcc gags on __attribute__.
573 * <http://www.opensource.apple.com/bugs/X/gcc/2512150.html> */
574 #define __attribute__(x)
579 /* use magic gcc attributes to catch format errors */
580 void rprintf(enum logcode , const char *, ...)
581 __attribute__((format (printf, 2, 3)))
584 /* This is just like rprintf, but it also tries to print some
585 * representation of the error code. Normally errcode = errno. */
586 void rsyserr(enum logcode, int, const char *, ...)
587 __attribute__((format (printf, 3, 4)))
590 #ifdef REPLACE_INET_NTOA
591 #define inet_ntoa rep_inet_ntoa
596 size_t strlcpy(char *d, const char *s, size_t bufsize);
600 size_t strlcat(char *d, const char *s, size_t bufsize);
604 #define WEXITSTATUS(stat) ((int)(((stat)>>8)&0xFF))
607 #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
612 #ifndef HAVE_INET_NTOP
614 inet_ntop(int af, const void *src, char *dst, size_t size);
615 #endif /* !HAVE_INET_NTOP */
617 #ifndef HAVE_INET_PTON
618 int isc_net_pton(int af, const char *src, void *dst);
621 #ifdef MAINTAINER_MODE
622 const char *get_panic_action(void);
625 #define UNUSED(x) x __attribute__((__unused__))
627 const char *io_write_phase, *io_read_phase;