X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/11a5a3c704fd75325450ddae3fb2cb01f19b7111..fcb69e5cdcfdfd0bdcea2127e5f4c9133a2282b9:/rsync.h diff --git a/rsync.h b/rsync.h index dc2988a3..689965d6 100644 --- a/rsync.h +++ b/rsync.h @@ -1,6 +1,7 @@ /* - Copyright (C) Andrew Tridgell 1996 + Copyright (C) by Andrew Tridgell 1996, 2000 Copyright (C) Paul Mackerras 1996 + Copyright (C) 2001, 2002 by Martin Pool 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 @@ -17,16 +18,23 @@ 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_NAME "rsync" #define RSYNCD_CONF "/etc/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 @@ -41,8 +49,19 @@ #define SAME_TIME (1<<7) /* update this if you make incompatible changes */ -#define PROTOCOL_VERSION 19 -#define MIN_PROTOCOL_VERSION 11 +#define PROTOCOL_VERSION 26 + +/* 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. + * + * There are two possible explanations for the limit at thirty: 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 15 and 30. */ +#define MIN_PROTOCOL_VERSION 15 #define MAX_PROTOCOL_VERSION 30 #define RSYNC_PORT 873 @@ -50,33 +69,28 @@ #define SPARSE_WRITE_SIZE (1024) #define WRITE_SIZE (32*1024) #define CHUNK_SIZE (32*1024) -#define MAX_MAP_SIZE (1*1024*1024) +#define MAX_MAP_SIZE (256*1024) #define IO_BUFFER_SIZE (4092) -#define MAX_READ_BUFFER (1024*1024) #define MAX_ARGS 1000 #define MPLEX_BASE 7 -#define FERROR 1 -#define FINFO 2 -#define FLOG 3 + +/* Log values. I *think* what these mean is: FLOG goes to the server + * logfile; FERROR and FINFO try to end up on the client, with + * different levels of filtering. */ +enum logcode {FNONE=0, FERROR=1, FINFO=2, FLOG=3 }; + +#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, either to "remsh", + * "rsh", or otherwise something specified by the user. HAVE_REMSH + * controls parameter munging for HP/UX, etc. */ #include -#ifdef HAVE_GETOPT_LONG -#include -#else -#include "lib/getopt.h" -#endif - #ifdef HAVE_UNISTD_H #include #endif @@ -144,11 +158,6 @@ #endif #include -#if defined(HAVE_MMAP) && defined(HAVE_MUNMAP) -#include -#define USE_MMAP 1 -#endif - #ifdef HAVE_UTIME_H #include #endif @@ -174,6 +183,10 @@ #include #endif +#ifdef HAVE_MALLOC_H +# include +#endif + /* these are needed for the uid/gid mapping code */ #include #include @@ -204,6 +217,8 @@ #include #endif +#include + #define BOOL int @@ -224,6 +239,10 @@ #define int32 long #elif (SIZEOF_SHORT == 4) #define int32 short +#else +/* I hope this works */ +#define int32 int +#define LARGE_INT32 #endif #endif @@ -248,15 +267,44 @@ #elif HAVE_LONGLONG #define int64 long long #else +/* As long as it gets... */ #define int64 off_t #define NO_INT64 #endif -#if HAVE_SHORT_INO_T -#define INO_T uint32 -#else -#define INO_T ino_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 int64 +#define DEV64_T int64 #ifndef MIN #define MIN(a,b) ((a)<(b)?(a):(b)) @@ -266,6 +314,10 @@ #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 @@ -283,9 +335,13 @@ struct file_struct { time_t modtime; OFF_T length; mode_t mode; - INO_T inode; - dev_t dev; - dev_t rdev; + + INO64_T inode; + /** Device this file lives upon */ + DEV64_T dev; + + /** If this is a device node, the device number. */ + DEV64_T rdev; uid_t uid; gid_t gid; char *basename; @@ -295,10 +351,21 @@ struct file_struct { char *sum; }; + +#define ARENA_SIZE (32 * 1024) + +struct string_area { + char *base; + char *end; + char *current; + struct string_area *next; +}; + struct file_list { int count; int malloced; struct file_struct **files; + struct string_area *string_area; }; struct sum_buf { @@ -310,23 +377,23 @@ struct sum_buf { }; 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 */ + size_t remainder; /* flength % block_length */ + size_t n; /* block_length */ + struct sum_buf *sums; /* points to info for each chunk */ }; struct map_struct { - char *map,*p; + char *p; int fd,p_size,p_len; - OFF_T size, p_offset; + OFF_T file_size, p_offset, p_fd_offset; }; struct exclude_struct { - char *orig; char *pattern; int regular_exp; + int fnmatch_flags; int include; int directory; int local; @@ -355,9 +422,29 @@ static inline int flist_up(struct file_list *flist, int i) } #include "byteorder.h" -#include "version.h" +#include "lib/mdfour.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) +int vsnprintf (char *str, size_t count, const char *fmt, va_list args); +#endif + +#if !defined(HAVE_SNPRINTF) && !defined(HAVE_C99_VSNPRINTF) +int snprintf(char *str,size_t count,const char *fmt,...); +#endif + #if !HAVE_STRERROR extern char *sys_errlist[]; @@ -376,6 +463,9 @@ extern int errno; #define SUPPORT_LINKS HAVE_READLINK #define SUPPORT_HARD_LINKS HAVE_LINK +/* 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 @@ -446,9 +536,85 @@ extern int errno; #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)) #ifndef ACCESSPERMS #define ACCESSPERMS 0777 #endif +/* 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):"") + +#if !defined(__GNUC__) || defined(APPLE) +/* Apparently the OS X port of gcc gags on __attribute__. + * + * */ +#define __attribute__(x) + +#endif + + +/* 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 + + +#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__) + + +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 isc_net_pton(int af, const char *src, void *dst); +#endif + +#define UNUSED(x) x __attribute__((__unused__))