X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/7561c3e132027283a4bb2b647271a61370bbcb85..7f2a1f651e6db7483bcb3d2678dcb60cc4e54582:/NEWS diff --git a/NEWS b/NEWS index 2b9e9e68..b7ad4ffc 100644 --- a/NEWS +++ b/NEWS @@ -1,236 +1,303 @@ -NEWS for rsync 2.6.2 (30 Apr 2004) -Protocol: 28 (unchanged) -Changes since 2.6.1: +NEWS for rsync 2.6.4 (UNRELEASED) +Protocol: 29 (changed) +Changes since 2.6.3: - BUG FIXES: - - - Fixed a major bug in the sorting of the filenames when --relative - is used for some sources (just sources such as "/" and "/*" were - affected). This fix ensures that we ask for the right file-list - item when requesting changes from the sender. + OUTPUT CHANGES: - - Rsync now checks the return value of the close() function to - better report disk-full problems on an NFS file system. + - When rsync deletes a directory and outputs a verbose message about + it, it now appends a trailing slash to the name instead of (only + sometimes) outputting a preceding "directory " string. - - Restored the old daemon-server behavior of logging error messages - rather than returning them to the user. (A better long-term fix - will be sought in the future.) + - The --stats output will contain file-list time-statistics if both + sides are 2.6.4, or if the local side is 2.6.4 and the files are + being pushed (since the stats come from the sending side). + (Requires protocol 29 for a pull.) - - An obscure uninitialized-variable bug was fixed in the uid/gid - code. (This bug probably had no ill effects.) - - BUILD CHANGES: - - - Got rid of the configure check for sys/sysctl.h (it wasn't used - and was causing a problem on some systems). Also improved the - broken-largefile-locking test to try to avoid failure due to an - NFS build-dir. - - - Fixed a compile problem on systems that don't define - AI_NUMERICHOST. + - The "%o" (operation) log format now has a third value (besides "send" + and "recv"): "del." (with trailing dot to make it 4 chars). This + changes the way deletions are logged in the daemon's log file. + + BUG FIXES: - - Fixed a compile problem in the popt source for compilers that - don't support __attribute__. + - Restore the list-clearing behavior of "!" in a .cvsignore file (2.6.3 + was only treating it as a special token in an rsync include/exclude + file). - DEVELOPER RELATED: + - The combination of --verbose and --dry-run now mentions the full list + of changes that would be output without --dry-run. - - Improved the testsuite's "merge" test to work on OSF1. + - Avoid a mkdir warning when removing a directory in the destination + that already exists in the --backup-dir. - - Two new diffs were added to the patches dir. + - An OS that has a binary mode for its files (such as cygwin) needed + setmode(fd, O_BINARY) called on the temp-file we opened with + mkstemp(). (Fix derived from the cygwin's 2.6.3 rsync package.) - -NEWS for rsync 2.6.1 (26 Apr 2004) -Protocol: 28 (changed) -Changes since 2.6.0: + - Fixed a potential hang when verbosity is high, the client side is + the sender, and the file-list is large. - SECURITY FIXES: + - We now check if the OS doesn't support using mknod() for creating + FIFOs and sockets, and compile-in using mkfifo() and socket() when + necessary. - - Paths sent to an rsync daemon are more thoroughly sanitized when - chroot is not used. If you're running a non-read-only rsync - daemon with chroot disabled, *please upgrade*, ESPECIALLY if the - user privs you run rsync under is anything above "nobody". + - Fixed an off-by-one error in the handling of --max-delete=N. - ENHANCEMENTS: + - One place in the code wasn't checking if fork() failed. - - Lower memory use, more optimal transfer of data over the socket, - and lower CPU usage (see the INTERNAL section for details). + - The "ignore nonreadable" daemon parameter used to erroneously affect + symlinks that pointed to a non-existent file. This has been fixed. - - The RSYNC_PROXY environment variable can now contain a - "USER:PASS@" prefix before the "HOST:PORT" information. - (Bardur Arantsson) + - If the OS does not have lchown() and a chown() of a symlink will + affect the referent of a symlink (as it should), we no longer try + to set the user and group of a symlink. - - The --progress output now mentions how far along in the transfer - we are, including both a count of files transferred and a - percentage of the total file-count that we've processed. It also - shows better current-rate-of-transfer and remaining-transfer-time - values. + - The generator now properly runs the hard-link loop and the dir-time + rewriting loop after we're sure that the redo phase is complete. - - Documentation changes now attempt to describe some often mis- - understood features more clearly. + - When --backup was specified with --partial-dir=DIR (where DIR is a + relative path), the backup code was erroneously trying to backup a + file that was put into the partial-dir. - BUG FIXES: + - One call to flush_write_file() was not being checked for an error. - - When -x (--one-file-system) is combined with -L (--copy-links) or - --copy-unsafe-links, no symlinked files are skipped, even if the - referent file is on a different filesystem. - - - The --link-dest code now works properly for a non-root user when - (1) the UIDs of the source and destination differ and -o was - specified, or (2) when the group of the source can't be used on - the destination and -g was specified. - - - Fixed a bug in the handling of -H (hard-links) that might cause - the expanded PATH/NAME value of the current item to get - overwritten (due to an expanded-name caching bug). - - - We now reset the "new data has been sent" flag at the start of - each file we send. This makes sure that an interrupted transfer - with the --partial option set doesn't keep a shorter temp file - than the current basis file when no new data has been transfered - over the wire for that file. - - - Fixed a byte-order problem in --batch-mode on big-endian machines. - (Jay Fenlason) - - - When using --cvs-exclude, the exclude items we get from a - per-directory's .cvsignore file once again only affect that one - directory (not all following directories too). The items are also - now properly word-split and parsed without any +/- prefix parsing. - - - When specifying the USER@HOST: prefix for a file, the USER part - can now contain an '@', if needed (i.e. the last '@' is used to - find the HOST, not the first). - - - Fixed some bugs in the handling of group IDs for non-root users: - (1) It properly handles a group that the sender didn't have a name - for (it would previously skip changing the group on any files in - that group). (2) If --numeric-ids is used, rsync no longer - attempts to set groups that the user doesn't have the permission - to set. - - - Fixed the "refuse options" setting in the rsyncd.conf file. - - - Improved the -x (--one-file-system) flag's handling of any mount- - point directories we encounter. It is both more optimal (in that - it no longer does a useless scan of the contents of the mount- - point dirs) and also fixes a bug where a remapped mount of the - original filesystem could get discovered in a subdir we should be - ignoring. - - - Rsync no longer discards a double-slash at the start of a filename - when trying to open the file. It also no longer constructs names - that start with a double slash (unless the user supplied them). - - - Path-specifying options to a daemon should now work the same with - or without chroot turned on. Previously, such a option (such as - --link-dest) would get its absolute path munged into a relative - one if chroot was not on, making that setting fairly useless. - Rsync now transforms the path into one that is based on the - module's base dir when chroot is not enabled. - - - Fixed a compatibility problem interacting with older rsync - versions that might send us an empty --suffix value without - telling us that --backup-dir was specified. - - - The "hosts allow" option for a daemon-over-remote-shell process - now has improved support for IPv6 addresses and a fix for systems - that have a length field in their socket structs. - - - Fixed the ability to request an empty backup --suffix when sending - files to an rsync daemon. + - The --no-relative option was not being sent from the client to a + server sender. - INTERNAL: + - If an rsync daemon specified "dont compress = ..." for a file and the + client tried to specify --compress, the libz code was not handling a + compression level of 0 properly. This could cause a transfer failure + if the block-size for a file was large enough (e.g. rsync might have + exited with an error for large files). - - Most of the I/O is now buffered, which results in a pretty large - speedup when running under MS Windows. (Craig Barratt) + - Fixed a bug that would sometimes surface when using --compress and + sending a file with a block-size larger than 64K (either manually + specified, or computed due to the file being really large). Prior + versions of rsync would sometimes fail to decompress the data + properly, and thus the transferred file would fail its verification. - - Optimizations to the name-handling/comparing code have made some - significant reductions in user-CPU time for large file sets. + - If a daemon can't open the specified log file (i.e. syslog is not + being used), die without crashing. We also output an error about + the failure on stderr (which will only be seen if --no-detach was + specified). - - Some cleanup of the variable types make the code more consistent. + - A local transfer no longer duplicates all its include/exclude options + (since the forked process already has a copy of the exclude list, + there's no need to send them a set of duplicates). - - Reduced memory requirements of hard link preservation. - (J.W. Schultz) + - When --progress is specified, the output of items that the generator + is creating (e.g. dirs, symlinks) is now integrated into the progress + output without overlapping it. (Requires protocol 29.) - - Implemented a new algorithm for hard-link handling that speeds up - the code significantly. (J.W. Schultz and Wayne Davison) + ENHANCEMENTS: - - The --hard-link option now uses the first existing file in the - group of linked files as the basis for the transfer. This - prevents the sub-optimal transfer of a file's data when a new - hardlink is added on the sending side and it sorts alphabetically - earlier in the list than the files that are already present on the - receiving side. + - Rsync now supports popt's option aliases, which means that you can + use /etc/popt and/or ~/.popt to create your own option aliases. + + - Added the --delete-during (--del) option which will delete files + from the receiving side incrementally as each directory in the + transfer is being processed. This makes it more efficient than the + default, before-the-transfer behavior, which is now available as + --delete-before (and is still the default --delete-WHEN option that + will be chosen if --delete or --delete-excluded is specified without + a --delete-WHEN choice). All the --del* options infer --delete, so + an rsync daemon that refuses "delete" will still refuse to allow any + file-deleting options. + + - All the --delete-WHEN options are now more memory efficient: + Previously an entire duplicate set of file-list objects was created + on the receiving side for the entire destination hierarchy. The new + algorithm only creates one directory of objects at a time (for files + inside the transfer). + + - Added support for specifying multiple --compare-dest or --link-dest + options, but only of a single type. (Promoted from the patches dir + and enhanced.) + + - Added the --max-size option. (Promoted from the patches dir.) + + - The daemon-mode options were separated from the normal rsync options + so that they can't be mixed together. This makes it impossible to + start a daemon that had improper default option values that could + cause problems when a client connects (e.g. a hang or an abort). + + - The --bwlimit option may now be used in combination with --daemon + to specify both a default value for the daemon side and a value + that cannot be exceeded by a user-specified --bwlimit option. + + - Added the "port" parameter to the rsyncd.conf file. (Promoted from + the patches dir.) Also added "address". A command-line option + will take precedence over a config-file option, as expected. + + - In _exit_cleanup(): when we are exiting with a partially-received + file, we now flush any data in the write-cache before closing the + partial file. + + - The --inplace support was enhanced to work with --compare-dest and + --link-dest. (Requires protocol 29.) + + - Added the --dirs (-d) option for an easier way to copy directories + without recursion. + + - Added the --list-only option, which is mainly a way for the client to + put the server into listing mode without needing to resort to any + internal option kluges (e.g. the age-old use of "-r --exclude="/*/*" + for a non-recursive listing). This option is used automatically + (behind the scenes) when a modern rsync speaks to a modern daemon, + but may also be specified manually if you want to force the use of + the --list-only option over a remote-shell connection. + + - Added the --omit-dir-times (-O) option, which will avoid updating + the modified time for directories when --times was specified. This + option will avoid an extra pass through the file-list at the end of + the transfer (to tweak all the directory times), which can result in + an appreciable speedup for a really large transfer. (Promoted from + the patches dir.) + + - Added the --filter (-f) option and its helper option, -F. Filter + rules are an extension to the existing include/exclude handling + that also supports nested filter files as well as per-directory + filter files (like .cvsignore, but with full filter-rule parsing). + This new option was chosen in order to ensure that all existing + include/exclude processing remained 100% compatible with older + versions. Protocol 29 is needed for full filter-rule support, but + backward-compatible rules work with earlier protocol versions. + (Promoted from the patches dir and enhanced.) + + - Added the --delay-updates option that puts all updated files into + a temporary directory (by default ".~tmp~", but settable via the + --partial-dir=DIR option) until the end of the transfer. This + makes the updates a little more atomic for a large transfer. + + - If rsync is put into the background, any output from --progress is + reduced. + + - Documented the "max verbosity" setting for rsyncd.conf. (This + setting was added a couple releases ago, but left undocumented.) + + - The sender and the generator now double-check the file-list index + they are given, and refuse to try to do a file transfer on a + non-file index (since that would indicate that something had gone + very wrong). + + - Added the --itemize-changes (-i) option, which is a way to output a + more detailed list of what files changed in any way and how they + changed. The effect is the same as specifying a --log-format of + "%i %n%L" (see the rsyncd.conf manpage). Works with --dry-run too. + + - Added the --fuzzy option, which attempts to find a basis file for a + file that is being created from scratch. The current algorithm + only looks in the destination directory for the created file, but + it does attempt to find a match based on size/mod-time (in case the + file was renamed with no other changes) as well as based on a fuzzy + name-matching algorithm. This option requires protocol 29 because + it needs the new file-sorting order. (Promoted from patches dir + and enhanced.) + + - Added the --remove-sent-files option, which lets you move files + between systems. + + - When building under windows, the default for --daemon is now to + avoid detaching, requiring the new --detach option to force rsync + to detach. + + - Improved the option descriptions in the --help text. + + SUPPORT FILES: + + - Added atomic-rsync to the support dir: a perl script that will + transfer some files using rsync, and then move the updated files into + place all at once at the end of the transfer. Only works when + pulling, and uses --link-dest and a parallel hierarchy of files to + effect its update. + + - Added mnt-excl to the support dir: a perl script that takes the + /proc/mounts file and translates it into a set of excludes that will + exclude all mount points (even mapped mounts to the same disk). The + excludes are made relative to the specified source dir and properly + anchored. + + - Added savetransfer.c to the support dir: a C program that can make + a copy of all the data that flows over the wire. This lets you test + for data corruption (by saving the data on both the sending side and + the receiving side) or provides a way to help debug a protocol error. + + - Added rrsync to the support dir: this is my version of Joe Smith's + restricted rsync perl script. This helps to ensure that only certain + rsync commands can be run by an ssh invocation. - - Dropped support for protocol versions less than 20 (2.3.0 released - 15 Mar 1999) and activated warnings for protocols less than 25 - (2.5.0 released 23 Aug 2001). (Wayne Davison and J.W. Schultz, - severally) + INTERNAL: - - More optimal data transmission for --hard-links (protocol 28). + - Added better checking of the checksum-header values that come over + the socket. - - More optimal data transmission for --checksum (protocol 28). + - Merged a variety of file-deleting functions into a single function so + that it is easier to maintain. - - Less memory is used when --checksum is specified. + - Improved the type of some variables (particularly blocksize vars) for + consistency and proper size. - - Less memory is used in the file list (a per-file savings). + - Got rid of the uint64 type (which we didn't need). - - The generator is now better about not modifying the file list - during the transfer in order to avoid a copy-on-write memory - bifurcation (on systems where fork() uses shared memory). - Previously, rsync's shared memory would slowly become unshared, - resulting in real memory usage nearly doubling on the receiving - side by the end of the transfer. Now, as long as permissions - are being preserved, the shared memory should remain that way - for the entire transfer. + - Use a slightly more compatible set of core #include directives. - - Changed hardlink info and file_struct + strings to use allocation - pools. This reduces memory use for large file-sets and permits - freeing memory to the OS. (J.W. Schultz) + - Defined int32 in a way that ensures that the build dies if we can't + find a variable with at least 32 bits. - - The 2 pipes used between the receiver and generator processes - (which are forked on the same machine) were reduced to 1 pipe and - the protocol improved so that (1) it is now impossible to have the - "redo" pipe fill up and hang rsync, and (2) trailing messages from - the receiver don't get lost on their way through the generator - over to the sender (which mainly affected hard-link messages and - verbose --stats output). + - The daemon's "read only" config item now sets an internal read_only + variable that makes extra sure that no write/delete calls on the + read-only side can succeed. - - Improved the internal uid/gid code to be more portable and a - little more optimized. + PROTOCOL DIFFERENCES FOR VERSION 29: - - The device numbers sent when using --devices are now sent as - separate major/minor values with 32-bit accuracy (protocol 28). - Previously, the copied devices were sent as a single 32-bit - number. This will make inter-operation of 64-bit binaries more - compatible with their 32-bit brethren (with both ends of the - connection are using protocol 28). Note that optimizations in the - binary protocol for sending the device numbers often results in - fewer bytes being used than before, even though more precision is - now available. + - A 16-bit flag-word is transmitted after every file-list index. This + indicates what is changing between the sender and the receiver. The + generator now transmits an index and a flag-word to indicate when + dirs and symlinks have changed (instead of producing a message), + which makes the outputting of the information more consistent and + less prone to screen corruption (because either the receiver or the + sender is now outputting all the file-change info). - - Some cleanup of the exclude/include structures and its code made - things clearer (internally), simpler, and more efficient. + - If --inplace is specified, the generator flags any transfer that is + using an alternate basis file so that the sender can use the entire + file in the rsync algorithm (unlike a normal --inplace update). - - The reading & writing of the file-list in batch-mode is now - handled by the same code that sends & receives the list over the - wire. This makes it much easier to maintain. (Note that the - batch code is still considered to be experimental.) + - The sending of exclude names is done using filter-rule syntax. This + means that all names have a prefixed rule indicator, even excludes + (which used to be sent as a bare pattern, when possible). The -C + option will include the per-dir .cvsignore merge file in the list of + filter rules so it is positioned correctly (unlike in some older + transfer scenarios). - BUILD CHANGES: + - Rsync sorts the filename list in a different way: it sorts the subdir + names after the non-subdir names for each dir's contents, and it + always puts a dir's contents immediately after the dir's name in the + list. (Previously an item named "foo.txt" would sort in between + directory "foo/" and "foo/bar".) - - The configure script now accepts --with-rsyncd-conf=PATH to - override the default value of the /etc/rsyncd.conf file. + - When talking to a protocol 29 rsync daemon, a list-only request + is able to note this before the options are sent over the wire and + the new --list-only option is included in the options. - - Fixed configure bug when running "./configure --disable-ipv6". + - When the --stats bytes are sent over the wire (or stored in a batch), + they now include two elapsed-time values: one for how long it took to + build the file-list, and one for how long it took to send it over the + wire (each expressed in thousandths of a second). - - Fixed compilation problem on Tru64 Unix (having to do with - sockaddr.sa_len and sockaddr.sin_len). + - When --delete-excluded is specified with some filter excludes, a + client sender will now initiate a send of the filter rules to the + receiver (older protocols used to omit the sending of excludes in + this situation since there were no receiver-specific rules that + survived --delete-excluded back then). Note that, as with all the + filter-list sending, only items that are significant to the other + side will actually be sent over the wire, so the filter-rule list + is often empty in this scenario. - DEVELOPER RELATED: + - A protocol-29 batch file includes a bit for the setting of the --dirs + option. Also, the shell script created by --write-batch will use the + --filter option instead of --exclude-from to capture any filter rules. - - Fixed "make test" bug when build dir is not the source dir. + BUILD CHANGES: - - Added a couple extra diffs in the "patches" dir, removed the ones - that got applied, and rebuilt the rest. + - Handle an operating system that use mkdev() in place of makedev(). + - Improved configure to better handle cross-compiling.