/*
- Copyright (C) Andrew Tridgell 1996
+ Copyright (C) by Andrew Tridgell 1996, 2000
Copyright (C) Paul Mackerras 1996
+ Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+
+#define False 0
+#define True 1
+
#define BLOCK_SIZE 700
#define RSYNC_RSH_ENV "RSYNC_RSH"
+#define RSYNC_RSH_IO_ENV "RSYNC_RSH_IO"
#define RSYNC_NAME "rsync"
+#define RSYNCD_SYSCONF "/etc/rsyncd.conf"
+#define RSYNCD_USERCONF "rsyncd.conf"
+
+#define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
+#define URL_PREFIX "rsync://"
+
#define BACKUP_SUFFIX "~"
/* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
- imcompatible with older versions :-( */
+ incompatible with older versions :-( */
#define CHAR_OFFSET 0
+/* These flags are only used during the flist transfer. */
-#define FILE_VALID 1
-#define SAME_MODE (1<<1)
-#define SAME_RDEV (1<<2)
-#define SAME_UID (1<<3)
-#define SAME_GID (1<<4)
-#define SAME_DIR (1<<5)
-#define SAME_NAME SAME_DIR
-#define LONG_NAME (1<<6)
-#define SAME_TIME (1<<7)
+#define XMIT_TOP_DIR (1<<0)
+#define XMIT_SAME_MODE (1<<1)
+#define XMIT_EXTENDED_FLAGS (1<<2)
+#define XMIT_SAME_RDEV_pre28 XMIT_EXTENDED_FLAGS /* Only in protocols < 28 */
+#define XMIT_SAME_UID (1<<3)
+#define XMIT_SAME_GID (1<<4)
+#define XMIT_SAME_NAME (1<<5)
+#define XMIT_LONG_NAME (1<<6)
+#define XMIT_SAME_TIME (1<<7)
+#define XMIT_SAME_HIGH_RDEV (1<<8)
+#define XMIT_HAS_IDEV_DATA (1<<9)
+#define XMIT_SAME_DEV (1<<10)
-/* update this if you make incompatible changes */
-#define PROTOCOL_VERSION 14
-#define MIN_PROTOCOL_VERSION 10
-#define MAX_PROTOCOL_VERSION 20
+/* These flags are used in the live flist data. */
+
+#define FLAG_TOP_DIR (1<<0)
+#define FLAG_HLINK_EOL (1<<1) /* generator only */
+#define FLAG_MOUNT_POINT (1<<2) /* sender only */
-#define SPARSE_WRITE_SIZE (4*1024)
+/* update this if you make incompatible changes */
+#define PROTOCOL_VERSION 28
+
+/* We refuse to interoperate with versions that are not in this range.
+ * Note that we assume we'll work with later versions: the onus is on
+ * people writing them to make sure that they don't send us anything
+ * we won't understand.
+ *
+ * Interoperation with old but supported protocol versions
+ * should cause a warning to be printed. At a future date
+ * the old protocol will become the minimum and
+ * compatibility code removed.
+ *
+ * There are two possible explanations for the limit at
+ * MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
+ * do not interoperate with us, and (more likely) so that we can
+ * detect an attempt to connect rsync to a non-rsync server, which is
+ * unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
+ * MAX_PROTOCOL_VERSION. */
+
+#define MIN_PROTOCOL_VERSION 19
+#define OLD_PROTOCOL_VERSION 20
+#define MAX_PROTOCOL_VERSION 40
+
+#define RSYNC_PORT 873
+
+#define SPARSE_WRITE_SIZE (1024)
#define WRITE_SIZE (32*1024)
#define CHUNK_SIZE (32*1024)
-#define MAX_MAP_SIZE (4*1024*1024)
+#define MAX_MAP_SIZE (256*1024)
+#define IO_BUFFER_SIZE (4092)
+
+#define IOERR_GENERAL (1<<0) /* For backward compatibility, this must == 1 */
+#define IOERR_VANISHED (1<<1)
+
+#define MAX_ARGS 1000
+
+#define MPLEX_BASE 7
+
+#define NO_EXCLUDES 0
+#define SERVER_EXCLUDES 1
+#define ALL_EXCLUDES 2
+
+#define MISSING_OK 0
+#define MISSING_FATAL 1
-#define BLOCKING_TIMEOUT 10
+#define ADD_INCLUDE 1
+#define ADD_EXCLUDE 0
-#define FERROR stderr
-#define FINFO (am_server?stderr:stdout)
+#define FULL_FLUSH 1
+#define NORMAL_FLUSH 0
+
+
+/* Log-message categories. FLOG is only used on the daemon side to
+ * output messages to the log file. */
+enum logcode { FERROR=1, FINFO=2, FLOG=3 };
+
+/* Messages types that are sent over the message channel. The logcode
+ * values must all be present here with identical numbers. */
+enum msgcode {
+ MSG_DATA=0, /* raw data on the multiplexed stream */
+ MSG_ERROR=FERROR, MSG_INFO=FINFO, MSG_LOG=FLOG, /* remote logging */
+ MSG_REDO=4, /* reprocess indicated flist index */
+ MSG_DONE=5, /* current phase is done */
+};
+
+#include "errcode.h"
#include "config.h"
-#if HAVE_REMSH
-#define RSYNC_RSH "remsh"
-#else
-#define RSYNC_RSH "rsh"
-#endif
+/* The default RSYNC_RSH is always set in config.h. */
#include <sys/types.h>
+
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdio.h>
+#include <stddef.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#include <stdlib.h>
#endif
+#if defined(HAVE_MALLOC_H) && (defined(HAVE_MALLINFO) || !defined(HAVE_STDLIB_H))
+#include <malloc.h>
+#endif
+
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#include <string.h>
#endif
-#ifdef HAVE_COMPAT_H
-#include <compat.h>
-#endif
-
-#ifdef HAVE_MALLOC_H
-#include <malloc.h>
-#endif
-
#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#endif
#include <errno.h>
-#ifdef HAVE_MMAP
-#include <sys/mman.h>
-#endif
-
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif
#endif
#endif
-#ifdef HAVE_FNMATCH
-#include <fnmatch.h>
-#else
-#include "lib/fnmatch.h"
+#ifdef HAVE_GLOB_H
+#include <glob.h>
#endif
-#ifdef HAVE_GETOPT_LONG
-#include <getopt.h>
+/* these are needed for the uid/gid mapping code */
+#include <pwd.h>
+#include <grp.h>
+
+#include <stdarg.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <syslog.h>
+#include <sys/file.h>
+
+#if HAVE_DIRENT_H
+# include <dirent.h>
#else
-#include "lib/getopt.h"
+# define dirent direct
+# if HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif
+# if HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif
+# if HAVE_NDIR_H
+# include <ndir.h>
+# endif
#endif
-#ifndef S_IFLNK
-#define S_IFLNK 0120000
+#ifdef HAVE_COMPAT_H
+#include <compat.h>
#endif
-#ifndef S_ISLNK
-#define S_ISLNK(mode) (((mode) & S_IFLNK) == S_IFLNK)
-#endif
+#include <assert.h>
+
+#include "lib/pool_alloc.h"
+
+#define BOOL int
#ifndef uchar
#define uchar unsigned char
#endif
+#if HAVE_UNSIGNED_CHAR
+#define schar signed char
+#else
+#define schar char
+#endif
+
#ifndef int32
#if (SIZEOF_INT == 4)
#define int32 int
#define int32 long
#elif (SIZEOF_SHORT == 4)
#define int32 short
+#else
+/* I hope this works */
+#define int32 int
+#define LARGE_INT32
#endif
#endif
#define uint32 unsigned int32
#endif
+#if HAVE_OFF64_T
+#define OFF_T off64_t
+#define STRUCT_STAT struct stat64
+#else
+#define OFF_T off_t
+#define STRUCT_STAT struct stat
+#endif
+
+#if HAVE_OFF64_T
+#define int64 off64_t
+#elif (SIZEOF_LONG == 8)
+#define int64 long
+#elif (SIZEOF_INT == 8)
+#define int64 int
+#elif HAVE_LONGLONG
+#define int64 long long
+#else
+/* As long as it gets... */
+#define int64 off_t
+#define NO_INT64
+#endif
+
+#if (SIZEOF_LONG == 8)
+#define uint64 unsigned long
+#elif (SIZEOF_INT == 8)
+#define uint64 unsigned int
+#elif HAVE_LONGLONG
+#define uint64 unsigned long long
+#else
+/* As long as it gets... */
+#define uint64 unsigned off_t
+#endif
+
+/* Starting from protocol version 26, we always use 64-bit
+ * ino_t and dev_t internally, even if this platform does not
+ * allow files to have 64-bit inums. That's because the
+ * receiver needs to find duplicate (dev,ino) tuples to detect
+ * hardlinks, and it might have files coming from a platform
+ * that has 64-bit inums.
+ *
+ * The only exception is if we're on a platform with no 64-bit type at
+ * all.
+ *
+ * Because we use read_longint() to get these off the wire, if you
+ * transfer devices or hardlinks with dev or inum > 2**32 to a machine
+ * with no 64-bit types then you will get an overflow error. Probably
+ * not many people have that combination of machines, and you can
+ * avoid it by not preserving hardlinks or not transferring device
+ * nodes. It's not clear that any other behaviour is better.
+ *
+ * Note that if you transfer devices from a 64-bit-devt machine (say,
+ * Solaris) to a 32-bit-devt machine (say, Linux-2.2/x86) then the
+ * device numbers will be truncated. But it's a kind of silly thing
+ * to do anyhow.
+ *
+ * FIXME: In future, we should probable split the device number into
+ * major/minor, and transfer the two parts as 32-bit ints. That gives
+ * you somewhat more of a chance that they'll come from a big machine
+ * to a little one in a useful way.
+ *
+ * FIXME: Really we need an unsigned type, and we perhaps ought to
+ * cope with platforms on which this is an unsigned int or even a
+ * struct. Later.
+ */
+#define INO64_T uint64
+#define DEV64_T uint64
#ifndef MIN
#define MIN(a,b) ((a)<(b)?(a):(b))
#define MAX(a,b) ((a)>(b)?(a):(b))
#endif
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 256
+#endif
+
/* the length of the md4 checksum */
#define MD4_SUM_LENGTH 16
#define SUM_LENGTH 16
+#define SHORT_SUM_LENGTH 2
+#define BLOCKSUM_BIAS 10
#ifndef MAXPATHLEN
#define MAXPATHLEN 1024
#endif
+#ifndef NAME_MAX
+#define NAME_MAX 255
+#endif
+
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xffffffff
+#endif
+
+#ifndef IN_LOOPBACKNET
+#define IN_LOOPBACKNET 127
+#endif
+
+#define GID_NONE (gid_t) -1
+
+#define HL_CHECK_MASTER 0
+#define HL_SKIP 1
+
+struct hlink {
+ int hlindex;
+ struct file_struct *next;
+};
+
+struct idev {
+ INO64_T inode;
+ DEV64_T dev;
+};
+
+#define F_DEV link_u.idev->dev
+#define F_INODE link_u.idev->inode
+
+#define F_HLINDEX link_u.links->hlindex
+#define F_NEXT link_u.links->next
+
struct file_struct {
- time_t modtime;
- off_t length;
- mode_t mode;
- ino_t inode;
- dev_t dev;
- dev_t rdev;
- uid_t uid;
- gid_t gid;
- char *name;
- char *dir;
- char *link;
- char sum[MD4_SUM_LENGTH];
+ time_t modtime;
+ OFF_T length;
+ mode_t mode;
+ union {
+ DEV64_T rdev; /* The device number, if this is a device */
+ char *sum; /* Only a normal file can have a checksum */
+ char *link; /* Holds symlink string, if a symlink */
+ } u;
+ union {
+ struct idev *idev;
+ struct hlink *links;
+ } link_u;
+ char *basename;
+ char *dirname;
+ char *basedir;
+ uid_t uid;
+ gid_t gid;
+ uchar flags; /* this item MUST remain last */
};
+/*
+ * Start the flist array at FLIST_START entries and grow it
+ * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
+ */
+#define FLIST_START (32 * 1024)
+#define FLIST_LINEAR (FLIST_START * 512)
+/*
+ * Extent size for allocation pools A minimum size of 128KB
+ * is needed to mmap them so that freeing will release the
+ * space to the OS.
+ *
+ * Larger sizes reduce leftover fragments and speed free calls
+ * (when they happen) Smaller sizes increase the chance of
+ * freed allocations freeing whole extents.
+ */
+
+#define FILE_EXTENT (256 * 1024)
+#define HLINK_EXTENT (128 * 1024)
+
+#define WITH_HLINK 1
+#define WITHOUT_HLINK 0
+
struct file_list {
- int count;
- int malloced;
- struct file_struct *files;
+ int count;
+ int malloced;
+ alloc_pool_t file_pool;
+ alloc_pool_t hlink_pool;
+ struct file_struct **files;
};
struct sum_buf {
- off_t offset; /* offset in file of this chunk */
- int len; /* length of chunk of file */
- int i; /* index of this chunk */
- uint32 sum1; /* simple checksum */
- char sum2[SUM_LENGTH]; /* checksum */
+ OFF_T offset; /**< offset in file of this chunk */
+ unsigned int len; /**< length of chunk of file */
+ int i; /**< index of this chunk */
+ uint32 sum1; /**< simple checksum */
+ char sum2[SUM_LENGTH]; /**< checksum */
};
struct sum_struct {
- off_t flength; /* total file length */
- int count; /* how many chunks */
- int remainder; /* flength % block_length */
- int n; /* block_length */
- struct sum_buf *sums; /* points to info for each chunk */
+ OFF_T flength; /**< total file length */
+ size_t count; /**< how many chunks */
+ unsigned int blength; /**< block_length */
+ unsigned int remainder; /**< flength % block_length */
+ int s2length; /**< sum2_length */
+ struct sum_buf *sums; /**< points to info for each chunk */
};
struct map_struct {
- char *map,*p;
- int fd,size,p_size,p_offset,p_len;
+ char *p; /* Window pointer */
+ int fd; /* File Descriptor */
+ int p_size; /* Window size at allocation */
+ int p_len; /* Window size after fill */
+ /* p_size and p_len could be
+ * consolodated by using a local
+ * variable in map_ptr() */
+ int status; /* first errno from read errors */
+ OFF_T file_size; /* File size (from stat) */
+ OFF_T p_offset; /* Window start */
+ OFF_T p_fd_offset; /* offset of cursor in fd ala lseek */
};
+#define MATCHFLG_WILD (1<<0) /* pattern has '*', '[', and/or '?' */
+#define MATCHFLG_WILD2 (1<<1) /* pattern has '**' */
+#define MATCHFLG_WILD2_PREFIX (1<<2) /* pattern starts with '**' */
+#define MATCHFLG_ABS_PATH (1<<3) /* path-match on absolute path */
+struct exclude_struct {
+ char *pattern;
+ int match_flags;
+ int include;
+ int directory;
+ int slash_cnt;
+};
+
+struct stats {
+ int64 total_size;
+ int64 total_transferred_size;
+ int64 total_written;
+ int64 total_read;
+ int64 literal_data;
+ int64 matched_data;
+ int flist_size;
+ int num_files;
+ int num_transferred_files;
+ int current_file_index;
+};
+
+
+/* we need this function because of the silly way in which duplicate
+ entries are handled in the file lists - we can't change this
+ without breaking existing versions */
+static inline int flist_up(struct file_list *flist, int i)
+{
+ while (!flist->files[i]->basename) i++;
+ return i;
+}
+
#include "byteorder.h"
-#include "version.h"
+#include "lib/mdfour.h"
+#include "lib/wildmatch.h"
+#include "lib/permstring.h"
+#include "lib/addrinfo.h"
+
#include "proto.h"
-#include "md4.h"
+
+/* We have replacement versions of these if they're missing. */
+#ifndef HAVE_ASPRINTF
+int asprintf(char **ptr, const char *format, ...);
+#endif
+
+#ifndef HAVE_VASPRINTF
+int vasprintf(char **ptr, const char *format, va_list ap);
+#endif
+
+#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
+#define vsnprintf rsync_vsnprintf
+int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
+#endif
+
+#if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
+#define snprintf rsync_snprintf
+int snprintf(char *str,size_t count,const char *fmt,...);
+#endif
+
#if !HAVE_STRERROR
extern char *sys_errlist[];
# define strrchr rindex
#endif
-#if HAVE_DIRENT_H
-# include <dirent.h>
-#else
-# define dirent direct
-# if HAVE_SYS_NDIR_H
-# include <sys/ndir.h>
-# endif
-# if HAVE_SYS_DIR_H
-# include <sys/dir.h>
-# endif
-# if HAVE_NDIR_H
-# include <ndir.h>
-# endif
-#endif
-
#ifndef HAVE_ERRNO_DECL
extern int errno;
#endif
-#ifndef HAVE_BCOPY
-#define bcopy(src,dest,n) memcpy(dest,src,n)
-#endif
-
-#ifndef HAVE_BZERO
-#define bzero(buf,n) memset(buf,0,n)
-#endif
-
#define SUPPORT_LINKS HAVE_READLINK
#define SUPPORT_HARD_LINKS HAVE_LINK
-#if !SUPPORT_LINKS
-#define lstat stat
-#endif
-
+/* This could be bad on systems which have no lchown and where chown
+ * follows symbollic links. On such systems it might be better not to
+ * try to chown symlinks at all. */
#ifndef HAVE_LCHOWN
#define lchown chown
#endif
#define S_IWUSR 0200
#endif
-#define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode))
+#ifndef ACCESSPERMS
+#define ACCESSPERMS 0777
+#endif
+
+#ifndef S_ISVTX
+#define S_ISVTX 0
+#endif
+
+#define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
+
+#ifndef _S_IFMT
+#define _S_IFMT 0170000
+#endif
+
+#ifndef _S_IFLNK
+#define _S_IFLNK 0120000
+#endif
+
+#ifndef S_ISLNK
+#define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
+#endif
+
+#ifndef S_ISBLK
+#define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
+#endif
+
+#ifndef S_ISCHR
+#define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
+#endif
+
+#ifndef S_ISSOCK
+#ifdef _S_IFSOCK
+#define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
+#else
+#define S_ISSOCK(mode) (0)
+#endif
+#endif
+
+#ifndef S_ISFIFO
+#ifdef _S_IFIFO
+#define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
+#else
+#define S_ISFIFO(mode) (0)
+#endif
+#endif
+
+#ifndef S_ISDIR
+#define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
+#endif
+
+#ifndef S_ISREG
+#define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
+#endif
+
+/* work out what fcntl flag to use for non-blocking */
+#ifdef O_NONBLOCK
+# define NONBLOCK_FLAG O_NONBLOCK
+#elif defined(SYSV)
+# define NONBLOCK_FLAG O_NDELAY
+#else
+# define NONBLOCK_FLAG FNDELAY
+#endif
+
+#ifndef INADDR_LOOPBACK
+#define INADDR_LOOPBACK 0x7f000001
+#endif
+
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xffffffff
+#endif
+
+#define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) || S_ISFIFO(mode))
+
+/* Initial mask on permissions given to temporary files. Mask off setuid
+ bits and group access because of potential race-condition security
+ holes, and mask other access because mode 707 is bizarre */
+#define INITACCESSPERMS 0700
+
+/* handler for null strings in printf format */
+#define NS(s) ((s)?(s):"<NULL>")
+
+#if !defined(__GNUC__) || defined(APPLE)
+/* Apparently the OS X port of gcc gags on __attribute__.
+ *
+ * <http://www.opensource.apple.com/bugs/X/gcc/2512150.html> */
+#define __attribute__(x)
+
+#endif
+
+/* Convenient wrappers for malloc and realloc. Use them. */
+#define new(type) ((type *)malloc(sizeof(type)))
+#define new_array(type, num) ((type *)_new_array(sizeof(type), (num)))
+#define realloc_array(ptr, type, num) ((type *)_realloc_array((ptr), sizeof(type), (num)))
+
+/* use magic gcc attributes to catch format errors */
+ void rprintf(enum logcode , const char *, ...)
+ __attribute__((format (printf, 2, 3)))
+;
+
+/* This is just like rprintf, but it also tries to print some
+ * representation of the error code. Normally errcode = errno. */
+void rsyserr(enum logcode, int, const char *, ...)
+ __attribute__((format (printf, 3, 4)))
+ ;
+
+#ifdef REPLACE_INET_NTOA
+#define inet_ntoa rep_inet_ntoa
+#endif
+
+/* Make sure that the O_BINARY flag is defined. */
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+#ifndef HAVE_STRLCPY
+size_t strlcpy(char *d, const char *s, size_t bufsize);
+#endif
+
+#ifndef HAVE_STRLCAT
+size_t strlcat(char *d, const char *s, size_t bufsize);
+#endif
+
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(stat) ((int)(((stat)>>8)&0xFF))
+#endif
+
+#define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
+
+#ifdef HAVE_GETEUID
+#define MY_UID() geteuid()
+#else
+#define MY_UID() getuid()
+#endif
+
+#ifdef HAVE_GETEGID
+#define MY_GID() getegid()
+#else
+#define MY_GID() getgid()
+#endif
+
+extern int verbose;
+
+#ifndef HAVE_INET_NTOP
+const char *
+inet_ntop(int af, const void *src, char *dst, size_t size);
+#endif /* !HAVE_INET_NTOP */
+
+#ifndef HAVE_INET_PTON
+int inet_pton(int af, const char *src, void *dst);
+#endif
+
+#ifdef MAINTAINER_MODE
+const char *get_panic_action(void);
+#endif
+
+#define UNUSED(x) x __attribute__((__unused__))
+extern const char *io_write_phase, *io_read_phase;
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff