# OLDNEWS   [plain text]

NEWS for rsync 2.6.8 (22 Apr 2006)
Protocol: 29 (unchanged)
Changes since 2.6.7:

BUG FIXES:

- Fixed a bug in the exclude code where an anchored exclude without any
wildcards fails to match an absolute source arg, but only when --relative
is in effect.

- Improved the I/O code for the generator to fix a potential hang when the
receiver gets an EOF on the socket but the generator's select() call
never indicates that the socket is writable for it to be notified about
the EOF.  (This can happen when using stunnel).

- Fixed a problem with the file-reading code where a failed read (such as

- Fixed a logging bug where the "log file" directive was not being honored
in a single-use daemon (one spawned by a remote-shell connection or by
init).

- If rsync cannot honor the --delete option, we output an error and exit
instead of silently ignoring the option.

- Fixed a bug in the --link-dest code that prevented special files (such as

- The ability to hard-link symlinks and special files is now determined at
configure time instead of at runtime.  This fixes a bug with --link-dest

ENHANCEMENTS:

- In daemon mode, if rsync fails to bind to the requested port, the
error(s) returned by socket() and/or bind() are now logged.

- When we output a fatal error, we now output the version of rsync in the
message.

- Improved the documentation for the --owner and --group options.

- The rsyncstats script in "support" has an improved line-parsing regex
that is easier to read and also makes it to parse syslog-generated lines.

- A new script in "support": file-attr-restore, can be used to restore the
attributes of a file-set (the permissions, ownership, and group info)
taken from the cached output of a "find ARG... -ls" command.

DEVELOPER RELATED:

- Removed the unused function write_int_named(), the unused variable
io_read_phase, and the rarely used variable io_write_phase.  This also
elides the confusing 'phase "unknown"' part of one error message.

- Removed two unused configure checks and two related (also unused)
compatibility functions.

- The xattrs.diff patch received a security fix that prevents a potential
buffer overflow in the receive_xattr() code.

- The acls.diff patch has been improved quite a bit, with more to come.

- A new patch was added: log-file.diff.  This contains an early version of
a future option, --log-file=FILE, that will allow any rsync to log its
actions to a file (something that only a daemon supports at present).

NEWS for rsync 2.6.7 (11 Mar 2006)
Protocol: 29 (unchanged)
Changes since 2.6.6:

OUTPUT CHANGES:

- The letter 'D' in the itemized output was being used for both devices
(character or block) as well as other special files (such as fifos and
named sockets).  This has changed to separate non-device special files
"--specials" option, below.

- The way rsync escapes unreadable characters has changed.  First, rsync
now has support for recognizing valid multibyte character sequences in
your current locale, allowing it to escape fewer characters than before
for a locale such as UTF-8.  Second, it now uses an escape idiom of
"\#123", which is the literal string "\#" followed by exactly 3 octal
digits.  Rsync no longer doubles a backslash character in a filename
(e.g. it used to output "foo\\bar" when copying "foo\bar") -- now it only
escapes a backslash that is followed by a hash-sign and 3 digits (0-9)
the --8-bit-output (-8) option, mentioned below.

Script writers: the local rsync is the one that outputs escaped names,
so if you need to support unescaping of filenames for older rsyncs, I'd
suggest that you parse the output of "rsync --version" and only use the
old unescaping rules for 2.6.5 and 2.6.6.

BUG FIXES:

- Fixed a really old bug that caused --checksum (-c) to checksum all the
files encountered during the delete scan (ouch).

- Fixed a potential hang in a remote generator:  when the receiver gets a
the generator does not try to send any of the terminating error messages
to the client (avoiding a potential hang in some setups).

- If the sender gets an early EOF reading a source file, we propagate this
error to the receiver so that it can discard the file and try requesting
it again (which is the existing behavior for other kinds of read errors).

- If a device-file/special-file changes permissions, rsync now updates the
permissions without recreating the file.

- If the user specifies a remote-host for both the source and destination,
we now output a syntax error rather than trying to open the destination
hostspec as a filename.

- When --inplace creates a new destination file, rsync now creates it with
permissions 0600 instead of 0000 -- this makes restarting possible when
the transfer gets interrupted in the middle of sending a new file.

- Reject the combination of --inplace and --sparse since the sparse-output
algorithm doesn't work when overwriting existing data.

- Fixed the directory name in the error that is output when pop_dir()
fails.

- Really fixed the parsing of a "!" entry in .cvsignore files this time.

- If the generator gets a stat() error on a file, output it (this used to
require at least -vv for the error to be seen).

- If waitpid() fails or the child rsync didn't exit cleanly, we now handle
the exit status properly and generate a better error.

- Fixed some glitches in the double-verbose output when using --copy-dest,
--link-dest, or --compare-dest.  Also improved how the verbose output
"dest" file, and copied files (via --copy-dest).

- Fixed the matching of the dont-compress items (e.g. *.gz) against files
that have a path component containing a slash.

- If code reading a filter/exclude file an EINTR error, rsync now clears
the error flag on the file handle so it can keep on reading.

- If --relative is active, the sending side cleans up trailing "/" or "/."
suffixes to avoid triggering a bug in older rsync versions.  Also, we now
reject a ".." dir if it would be sent as a relative dir.

- If a non-directory is in the way of a directory and rsync is run with
--dry-run and --delete, rsync no longer complains about not being able
to opendir() the not-yet present directory.

- When --list-only is used and a non-existent local destination dir was
also specified as a destination, rsync no longer generates a warning
about being unable to create the missing directory.

- Fixed some problems with --relative --no-implied-dirs when the
destination directory did not yet exist:  we can now create a symlink or
device when it is the first thing in the missing dir, and --fuzzy no
longer complains about being unable to open the missing dir.

- Fixed a bug where the --copy-links option would not affect implied

- Got rid of the need for --force to be used in some circumstances with
--delete-after (making it consistent with --delete-before/-during).

- Rsync now ignores the SIGXFSZ signal, just in case your OS sends this
when a file is too large (rsync handles the write error).

- Fixed a bug in the Proxy-Authorization header's base64-encoded value: it
was not properly padded with trailing '=' chars.  This only affects a
user that need to use a password-authenticated proxy for an outgoing
daemon-rsync connection.

- If we're transferring an empty directory to a new name, rsync no longer
forces S_IWUSR if it wasn't already set, nor does it accidentally leave
it set.

- Fixed a bug in the debug output (-vvvvv) that could mention the wrong
checksum for the current file offset.

- Rsync no longer allows a single directory to be copied over a non-
directory destination arg.

ENHANCEMENTS:

- Added the --append option that makes rsync append data onto files that
are longer on the source than the destination (this includes new files).

- Added the --min-size=SIZE option to exclude small files from the
transfer.

- Added the --compress-level option to allow you to set how aggressive
rsync's compression should be (this option implies --compress).

- Enhanced the parsing of the SIZE value for --min-size and --max-size to
allow easy entry of multiples of 1000 (instead of just multiples of 1024)
and off-by-one values too (e.g. --max-size=8mb-1).

- Added the --8-bit-output (-8) option, which tells rsync to avoid escaping
high-bit characters that it thinks are unreadable in the current locale.

- The new option --human-readable (-h) changes the output of --progress,
--stats, and the end-of-run summary to be easier to read.  If repeated,
the units become powers of 1024 instead of powers of 1000.  (The old
meaning of -h, as a shorthand for --help, still works as long as you
just use it on its own, as in "rsync -h".)

- If lutimes() and/or lchmod() are around, use them to allow the

- Added two config items to the rsyncd.conf parsing:  "pre-xfer exec" and
"post-xfer exec".  These allow a command to be specified on a per-module
basis that will be run before and/or after a daemon-mode transfer.  (See
the man page for a list of the environment variables that are set with

- When using the --relative option, you can now insert a dot dir in
the source path to indicate where the replication of the source dirs
should start.  For example, if you specify a source path of
rsync://host/module/foo/bar/./baz/dir with -R, rsync will now only
replicate the "baz/dir" part of the source path (note: a trailing
dot dir is unaffected unless it also has a trailing slash).

- Added some new --no-FOO options that make it easier to override unwanted
implied or default options.  For example, "-a --no-o" (aka "--archive
--no-owner") can be used to turn off the preservation of file ownership
that is implied by -a.

- Added the --chmod=MODE option that allows the destination permissions to
be changed from the source permissions.  E.g. --chmod=g+w,o-rwx

- Added the "incoming chmod" and "outgoing chmod" daemon options that allow
a module to specify what permissions changes should be applied to all
files copied to and from the daemon.

- Allow the --temp-dir option to be specified when starting a daemon, which
sets the default temporary directory for incoming files.

- If --delete is combined with --dirs without --recursive, rsync will now
delete in any directory whose content is being synchronized.

- If --backup is combined with --delete without --backup-dir (and without
--delete-excluded), we add a "protect" filter-rule to ensure that files
with the backup suffix are not deleted.

- The file-count stats that are output by --progress were improved to
better indicate what the numbers mean.  For instance, the output:
"(xfer#5, to-check=8383/9999)" indicates that this was the fifth file
to be transferred, and we still need to check 8383 more files out of
a total of 9999.

- The include/exclude code now allows a dir/*** directive (with 3 trailing
stars) to match both the dir itself as well as all the content below the
dir (dir/** would not match the dir).

- Added the --prune-empty-dirs (-m) option that makes the receiving rsync
discard empty chains of directories from the file-list.  This makes it
easier to selectively copy files from a source hierarchy and end up with
just the directories needed to hold the resulting files.

- If the --itemize-changes (-i) option is repeated, rsync now includes
unchanged files in the itemized output (similar to -vv, but without all
the other verbose messages that can get in the way).  Of course, the
client must be version 2.6.7 for this to work, but the remote rsync only
needs to be 2.6.7 if you're pushing files.

- Added the --specials option to tell rsync to copy non-device special
files (which rsync now attempts even as a normal user).  The --devices
option now requests the copying of just devices (character and block).
The -D option still requests both (e.g. --devices and --specials), -a
still implies -D, and non-root users still get a silent downgrade that
omits device copying.

- Added the --super option to make the receiver always attempt super-user
activities.  This is useful for systems that allow things such as devices
to be created or ownership to be set without being UID 0, and is also
useful for someone who wants to ensure that errors will be output if the
receiving rsync isn't being run as root.

- Added the --sockopts option for those few who want to customize the TCP
options used to contact a daemon rsync.

- Added a way for the --temp-dir option to be combined with a partial-dir
setting that lets rsync avoid non-atomic updates (for those times when
--temp-dir is not being used because space is tight).

- A new support script, files-to-excludes, will transform a list of files
into a set of include/exclude directives that will copy those files.

- A new option, --executability (-E) can be used to preserve just the
execute bit on files, for those times when using the --perms option is
not desired.

- The daemon now logs each connection and also each module-list request

- New log-format options: %M (modtime), %U (uid), %G (gid), and %B
(permission bits, e.g. "rwxr-xrwt").

- The --dry-run option no longer forces the enabling of --verbose.

- The --remove-sent-files option now does a better job of incrementally
removing the sent files on the sending side (older versions tended to
clump up all the removals at the end).

- A daemon now supersedes its minimal SIGCHLD handler with the standard
PID-remembering version after forking.  This ensures that the generator
can get the child-exit status from the receiver.

- Use of the --bwlimit option no longer interferes with the remote rsync
sending error messages about invalid/refused options.

- Rsync no longer returns a usage error when used with one local source arg
and no destination: this now implies the --list-only option, just like
the comparable situation with a remote source arg.

- Various documentation improvements, including: a better synopsis, some
improved examples, a better discussion of the presence and absence of
--perms (including how it interacts with the new --executability and
--chmod options), an extended discussion of --temp-dir, an improved
discussion of --partial-dir, a better description of rsync's pattern
matching characters, an improved --no-implied-dirs section, and the
documenting of what the --stats option outputs.

- Various new and updated diffs in the patches dir, including: acls.diff,
xattrs.diff, atimes.diff, detect-renamed.diff, and slp.diff.

INTERNAL:

- We now use sigaction() and sigprocmask() if possible, and fall back on
signal() if not.  Using sigprocmask() ensures that rsync enables all the
signals that it needs, just in case it was started in a masked state.

- Some buffer sizes were expanded a bit, particularly on systems where
MAXPATHLEN is overly small (e.g. cygwin).

- If io_printf() tries to format more data than fits in the buffer, exit
with an error instead of transmitting a truncated buffer.

- If a va_copy macro is defined, lib/snprintf.c will use it when defining
the VA_COPY macro.

- Reduced the amount of stack memory needed for each level of directory
recursion by nearly MAXPATHLEN bytes.

- The wildmatch function was extended to allow an array of strings to be
supplied as the string to match.  This allows the exclude code to do less
string copying.

- Got rid of the safe_fname() function (and all the myriad calls) and
replaced it with a new function in the log.c code that filters all the
output going to the terminal.

- Unified the f_name() and the f_name_to() functions.

- Improved the hash-table code the sender uses to handle checksums to make
it use slightly less memory and run just a little faster.

DEVELOPER RELATED:

- The diffs in the patches dir now require "patch -p1 <DIFF" instead of
the previous -p0.  Also, the version included in the release tar now
affect generated files (e.g. configure, rsync.1, proto.h, etc.), so
it is no longer necessary to run autoconf and/or yodl unless you're
applying a patch that was checked out from CVS.

- Several diffs in the patches dir now use the proper --enable-FOO
configure option instead of --with-FOO to turn on the inclusion of
the newly patched feature.

- There is a new script, "prepare-source" than can be used to update the
various generated files (proto.h, configure, etc.) even before configure
has created the Makefile (this is mainly useful when patching the source
with a patch that doesn't affect generated files).

- The testsuite now sets HOME so that it won't be affected by a file such
as ~/.popt.

NEWS for rsync 2.6.6 (28 Jul 2005)
Protocol: 29 (unchanged)
Changes since 2.6.5:

SECURITY FIXES:

- The zlib code was upgraded to version 1.2.3 in order to make it more
secure.  While the widely-publicized security problem in zlib 1.2.2 did
not affect rsync, another security problem surfaced that affects rsync's
zlib 1.1.4.

BUG FIXES:

- The setting of flist->high in clean_flist() was wrong for an empty list.
This could cause flist_find() to crash in certain rare circumstances
(e.g. if just the right directory setup was around when --fuzzy was

- The outputting of hard-linked files when verbosity was > 1 was not right:
(1) Without -i it would output the name of each hard-linked file as
though it had been changed; it now outputs a "is hard linked" message for
the file. (2) With -i it would output all dots for the unchanged
attributes of a hard-link; it now changes those dots to spaces, as is
done for other totally unchanged items.

- When backing up a changed symlink or device, get rid of any old backup
item so that we don't get an "already exists" error.

- A couple places that were comparing a local and a remote modification-
time were not honoring the --modify-window option.

- Fixed a bug where the 'p' (permissions) itemized-changes flag might get
set too often (if some non-significant mode bits differed).

- Fixed a really old, minor bug that could cause rsync to warn about being
unable to mkdir() a path that ends in "/." because it just created the
directory (required --relative, --no-implied-dirs, a source path that
ended in either a trailing slash or a trailing "/.", and a non-existing

ENHANCEMENTS:

- Made the "max verbosity" setting in the rsyncd.conf file settable on a
per-module basis (which now matches the documentation).

- The support/rrsync script has been upgraded to verify the args of options
that take args (instead of rejecting any such options).  The script was
also changed to try to be more secure and to fix a problem in the parsing
of a pull operation that has multiple sources.

- Improved the documentation that explains the difference between a
normal daemon transfer and a daemon-over remote-shell transfer.

- Some of the diffs supplied in the patches dir were fixed and/or
improved.

BUILD CHANGES:

- Made configure define NOBODY_USER (currently hard-wired to "nobody") and
NOBODY_GROUP (set to either "nobody" or "nogroup" depending on what we
find in the /etc/group file).

- Added a test to the test suite, itemized.test, that tests the output of
-i (log-format w/%i) and some double-verbose messages.

NEWS for rsync 2.6.5 (1 Jun 2005)
Protocol: 29 (unchanged)
Changes since 2.6.4:

OUTPUT CHANGES:

- Non-printable chars in filenames are now output using backslash-
escaped characters rather than '?'s.  Any non-printable character is
output using 3 digits of octal (e.g. "\n" -> "\012"), and a backslash
is now output as "\\".  Rsync also uses your locale setting, which
can make it treat fewer high-bit characters as non-printable.

- If rsync received an empty file-list when pulling files, it would
output a "nothing to do" message and exit with a 0 (success) exit
status, even if the remote rsync returned an error (it did not do
this under the same conditions when pushing files).  This was changed
to make the pulling behavior the same as the pushing behavior:  we
now do the normal end-of-run outputting (depending on options) and
exit with the appropriate exit status.

BUG FIXES:

- A crash bug was fixed when a daemon had its "path" set to "/", did
not have chroot enabled, and used some anchored excludes in the
rsyncd.conf file.

- Fixed a bug in the transfer of a single file when -H is specified
(rsync would either infinite loop or perhaps crash).

- Fixed a case where the generator might try (and fail) to tweak the
write-permissions of a read-only directory in list-only mode (this
only caused an annoying warning message).

- If --compare-dest or --link-dest uses a locally-copied file as the
basis for an updated version, log this better when --verbose or -i
is in effect.

- Fixed the accidental disabling of --backup during the --delete-after
processing.

- Restored the ability to use the --address option in client mode (in
addition to its use in daemon mode).

- Make sure that some temporary progress information from the delete
processing does not get left on the screen when it is followed by a
newline.

- When --existing skips a directory with extra verbosity, refer to it
as a "directory", not a "file".

- When transferring a single file to a different-named file, any
generator messages that are source-file related no longer refer to
the file by the destination filename.

- Fixed a bug where hard-linking a group of files might fail if the
generator hasn't created a needed destination directory yet.

- Fixed a bug where a hard-linked group of files that is newly-linked
to a file in a --link-dest dir doesn't link the files from the rest
of the cluster.

- When deleting files with the --one-file-system (-x) option set, rsync
no longer tries to remove files from inside a mount-point on the
receiving side.  Also, we don't complain about being unable to remove
the mount-point dir.

- Fixed a compatibility problem when using --cvs-ignore (-C) and
sending files to an older rsync without using --delete.

- Make sure that a "- !" or "+ !" include/exclude pattern does not
trigger the list-clearing action that is reserved for "!".

- Avoid a timeout in the generator when the sender/receiver aren't
handling the generator's checksum output quickly enough.

- Fixed the omission of some directories in the delete processing when
--relative (-R) was combined with a source path that had a trailing
slash.

- Fixed a case where rsync would erroneously delete some files and then
re-transfer them when the options --relative (-R) and --recursive
(-r) were both enabled (along with --delete) and a source path had a
trailing slash.

- Make sure that --max-size doesn't affect a device or a symlink.

- Make sure that a system with a really small MAXPATHLEN does not cause
messages.  (This mainly affected Cygwin.)

- If a source pathname ends with a filename of "..", treat it as if
"../" had been specified (so that we don't copy files to the parent
dir of the destination).

- If --delete is combined with a file-listing rsync command (i.e. no
transfer is happening), avoid outputting a warning that we couldn't
delete anything.

- If --stats is specified with --delete-after, ensure that all the
"deleting" messages are output before the statistics.

- Improved one "if" in the deletion code that was only checking errno
for ENOTEMPTY when it should have also been checking for EEXIST (for
compatibility with OS variations).

ENHANCEMENTS:

of --write-batch=FILE) to create a batch file without doing any
actual updating of the destination.  This allows you to divert all
the file-updating data away from a slow data link (as long as you
are pushing the data to the remote server when creating the batch).

- When the generator is taking a long time to fill up its output buffer
(e.g. if the transferred files are few, small, or missing), it now
periodically flushes the output buffer so that the sender/receiver
can get started on the files sooner rather than later.

- Improved the keep-alive code to handle a long silence between the
sender and the receiver that can occur when the sender is receiving
the checksum data for a large file.

- Improved the auth-errors that are logged by the daemon to include
some information on why the authorization failed:  wrong user,
password mismatch, etc.  (The client-visible message is unchanged!)

- Improved the client's handling of an "@ERROR" from a daemon so that
it does not complain about an unexpectedly closed socket (since we
really did expect the socket to close).

- If the daemon can't open the log-file specified in rsyncd.conf, fall
back to using syslog and log an appropriate warning.  This is better
than what was typically a totally silent (and fatal) failure (since a
daemon is not usually run with the --no-detach option that was
necessary to see the error on stderr).

- The man pages now consistently refer to an rsync daemon as a "daemon"
instead of a "server" (to distinguish it from the server process in a
non-daemon transfer).

- Made a small change to the rrsync script (restricted rsync -- in the
support dir) to make a read-only server reject all --remove-* options
when sending files (to future-proof it against the possibility of
other similar options being added at some point).

INTERNAL:

- Rsync now calls setlocale(LC_CTYPE, "").  This enables isprint() to
better discern which filename characters need to be escaped in
messages (which should result in fewer escaped characters in some
locales).

- Improved the naming of the log-file open/reopen/close functions.

- Removed some protocol-compatibility code that was only needed to help
someone running a pre-release of 2.6.4.

BUILD CHANGES:

- Added configure option "--disable-locale" to disable any use of
setlocale() in the binary.

- Fixed a bug in the SUPPORT{,_HARD}_LINKS #defines which prevented

- Only #define HAVE_REMSH if it is going to be set to 1.

- Configure now disables the use of mkstemp() under HP-UX (since they
refuse to fix its broken handling of large files).

- Configure now explicitly checks for the lseek64() function so that
the code can use HAVE_LSEEK64 instead of inferring lseek64()'s
presence based on the presence of the off64_t type.

- Configure no longer mentions the change in the default remote-shell
(from rsh to ssh) that occurred for the 2.6.0 release.

- Some minor enhancements to the test scripts.

- Added a few new *.diff files to the patches dir, including a patch
that enables the optional copying of extended attributes.

NEWS for rsync 2.6.4 (30 March 2005)
Protocol: 29 (changed)
Changes since 2.6.3:

OUTPUT CHANGES:

- 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.

- 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.)

- The "%o" (operation) log-format escape 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.

- When the --log-format option is combined with --verbose, rsync now
avoids outputting the name of the file twice in most circumstances.
As long as the --log-format item does not refer to any post-transfer
items (such as %b or %c), the --log-format message is output prior to
the transfer, so --verbose is now the equivalent of a --log-format of
'%n%L' (which outputs the name and any link info).  If the log output
must occur after the transfer to be complete, the only time the name
is also output prior to the transfer is when --progress was specified
(so that the name will precede the progress stats, and the full
--log-format output will come after).

- Non-printable characters in filenames are replaced with a '?' to
avoid corrupting the screen or generating empty lines in the output.

BUG FIXES:

- 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).

- The combination of --verbose and --dry-run now mentions the full list
of changes that would be output without --dry-run.

- Avoid a mkdir warning when removing a directory in the destination
that already exists in the --backup-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 cygwin's 2.6.3 rsync package.)

- Fixed a potential hang when verbosity is high, the client side is
the sender, and the file-list is large.

- Fixed a potential protocol-corrupting bug where the generator could
merge a message from the receiver into the middle of a multiplexed
packet of data if only part of that data had been written out to the
socket when the message from the generator arrived.

- We now check if the OS doesn't support using mknod() for creating
FIFOs and sockets, and compile-in some compatibility code using
mkfifo() and socket() when necessary.

- Fixed an off-by-one error in the handling of --max-delete=N.  Also,
if the --max-delete limit is exceeded during a run, we now output a
code (25).

- One place in the code wasn't checking if fork() failed.

- The "ignore nonreadable" daemon parameter used to erroneously affect

- 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 generator now properly runs the hard-link loop and the dir-time
rewriting loop after we're sure that the redo phase is complete.

- 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.

- If a file gets resent in a single transfer and the --backup option is
enabled along with --inplace, rsync no longer performs a duplicate
backup (it used to overwrite the first backup with the failed file).

- One call to flush_write_file() was not being checked for an error.

- The --no-relative option was not being sent from the client to a
server sender.

- 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).

- 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.

- 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) and exit with a new error code (6).

- 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).

- The output of the items that are being updated by the generator (dirs,
symlinks, devices) is now intermingled in the proper order with the
output from the items that the receiver is updating (regular files)
when pulling.  This misordering was particularly bad when --progress
was specified.  (Requires protocol 29.)

- When --timeout is specified, lulls that occur in the transfer while
the generator is doing work that does not generate socket traffic
(looking for changed files, deleting files, doing directory-time
touch-ups, etc.) will cause a new keep-alive packet to be sent that
should keep the transfer going as long as the generator continues to
make progress.  (Requires protocol 29.)

- The stat size of a device is not added to the total file size of the
items in the transfer (the size might be undefined on some OSes).

- Fixed a problem with refused-option messages sometimes not making it
back to the client side when a remote --files-from was in effect and

- The --compare-dest option was not updating a file that differed in
(the preserved) attributes from the version in the compare-dest DIR.

- When rsync is copying files into a write-protected directory, fixed
the change-report output for the directory so that we don't report
an identical directory as changed.

ENHANCEMENTS:

- 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 also 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 (including the new --remove-sent-files option).

- All the --delete-WHEN options are now more memory efficient:
Previously an 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, --copy-dest, or
--link-dest options, but only of a single type. (Promoted from the
patches dir and enhanced.) (Requires protocol 29.)

- Added the --max-size option. (Promoted from the patches dir.)

- The daemon-mode options are now separated from the normal rsync
options so that they can't be mixed together.  This makes it
impossible to start a daemon that has improper default option values
(which could cause problems when a client connects, such as hanging
or crashing).

- 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
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,
--link-dest, and (the new) --copy-dest options. (Requires protocol
29.)

- Added the --dirs (-d) option for an easier way to copy directories
without recursion.  Any directories that are encountered are created
on the destination.  Specifying a directory with a trailing slash
copies its immediate contents to the destination.

- The --files-from option now implies --dirs (-d).

- 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 may provide
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.)

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 and in what way.  The effect
is the same as specifying a --log-format of "%i %n%L" (see both the
rsync and rsyncd.conf manpages).  Works with --dry-run too.

- Added the --fuzzy (-y) 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.) (Requires protocol 29.)

- Added the --remove-sent-files option, which lets you move files
between systems.

- The hostname in HOST:PATH or HOST::PATH may now be an IPv6 literal
enclosed in '[' and ']' (e.g. "[::1]").  (We already allowed IPv6
literals in the rsync://HOST:PORT/PATH format.)

- When rsync recurses to build the file list, it no longer keeps open
one or more directory handles from the dir's parent dirs.

- When building under windows, the default for --daemon is now to
avoid detaching, requiring the new --detach option to force rsync
to detach.

- The --dry-run option can now be combined with either --write-batch or
--read-batch, allowing you to run a do-nothing test command to see
what would happen without --dry-run.

- 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

- The log-format % escapes can now have a numeric field width in
between the % and the escape letter (e.g. "%-40n %08p").

- 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) and provides one way to debug a protocol error.

- Added rrsync to the support dir: this is an updated 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.

INTERNAL:

the socket.

- Merged a variety of file-deleting functions into a single function so
that it is easier to maintain.

- Improved the type of some variables (particularly blocksize vars) for
consistency and proper size.

- Got rid of the uint64 type (which we didn't need).

- Use a slightly more compatible set of core #include directives.

- Defined int32 in a way that ensures that the build dies if we can't
find a variable with at least 32 bits.

PROTOCOL DIFFERENCES FOR VERSION 29:

- 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
which makes the outputting of the information more consistent and
less prone to screen corruption (because the local receiver/sender is
now outputting all the file-change info messages).

- If a file is being hard-linked, the ITEM_XNAME_FOLLOWS bit is enabled
in the flag-word and the name of the file that was linked immediately
follows in vstring format (see below).

- If a file is being transferred with an alternate-basis file, the
ITEM_BASIS_TYPE_FOLLOWS bit is enabled in the flag-word and a single
byte follows, indicating what type of basis file was chosen.  If that
indicates that a fuzzy-match was selected, the ITEM_XNAME_FOLLOWS bit
is set in the flag-word and the name of the match in vstring format
follows the basis byte.  A vstring is a variable length string that
has its size written prior to the string, and no terminating null.
If the string is from 1-127 bytes, the length is a single byte.  If
it is from 128-32767 bytes, the length is written as ((len >> 8) |
0x80) followed by (len % 0x100).

- 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).

- 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".)

- 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.

- 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).

- When --delete-excluded is specified with some filter rules (AKA
excludes), a client sender will now initiate a send of the 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
that is sent in this scenario is often empty.

- An index equal to the file-list count is sent as a keep-alive packet
from the generator to the sender, which then forwards it on to the
receiver.  This normally invalid index is only a valid keep-alive
packet if the 16-bit flag-word that follows it contains a single bit
(ITEM_IS_NEW, which is normally an illegal flag to appear alone).

- A protocol-29 batch file includes a bit for the setting of the --dirs
option and for the setting of the --compress option.  Also, the shell
script created by --write-batch will use the --filter option instead
of --exclude-from to capture any filter rules.

BUILD CHANGES:

- Handle an operating system that use mkdev() in place of makedev().

- Improved configure to better handle cross-compiling.

NEWS for rsync 2.6.3 (30 Sep 2004)
Protocol: 28 (unchanged)
Changes since 2.6.2:

SECURITY FIXES:

- A bug in the sanitize_path routine (which affects a non-chrooted
rsync daemon) could allow a user to craft a pathname that would get
transformed into an absolute path for certain options (but not for
file-transfer names).  If you're running an rsync daemon with chroot
rsync under is anything above "nobody".

OUTPUT CHANGES (ATTN: those using a script to parse the verbose output):

- Please note that the 2-line footer (output when verbose) now uses the
you are not parsing the numeric values out of this footer, a script
would be better off using the empty line prior to the footer as the
indicator that the verbose output is over.

- The output from the --stats option was similarly affected to change

- Rsync ensures that a filename that contains a newline gets mentioned
with each newline transformed into a question mark (which prevents a
filename from causing an empty line to be output).

- The "backed up ..." message that is output when at least 2 --verbose
options are specified is now the same both with and without the
--backup-dir option.

BUG FIXES:

- Fixed a crash bug that might appear when --delete was used and
multiple source directories were specified.

- Fixed a 32-bit truncation of the file length when generating the
checksums.

- The --backup code no longer attempts to create some directories
over and over again (generating warnings along the way).

- Fixed a bug in the reading of the secrets file (by the daemon) and
the password file (by the client):  the files no longer need to be
terminated by a newline for their content to be read in.

- If a file has a read error on the sending side or the reconstructed
data doesn't match the expected checksum (perhaps due to the basis
file changing during the transfer), the receiver will no longer
retain the resulting file unless the --partial option was specified.
(Note: for the read-error detection to work, neither side can be
older than 2.6.3 -- older receivers will always retain the file, and
error.)

- If a file gets resent in a single transfer and the --backup option
is enabled, rsync no longer performs a duplicate backup (it used to
overwrite the original file in the backup area).

- Files specified in the daemon's "exclude" or "exclude from" config
items are now excluded from being uploaded (assuming that the module

- Got rid of a potential hang in the receiver when near the end of a
phase.

- When using --backup without a --backup-dir, rsync no longer preserves
the modify time on directories.  This avoids confusing NFS.

- When --copy-links (-L) is specified, we now output a separate error
for a symlink that has no referent instead of claiming that a file
"vanished".

- The --copy-links (-L) option no longer has the side-effect of telling
option (mentioned below) for a way to specify that behavior.

- Error messages from the daemon server's option-parsing (such as
refused options) are now successfully transferred back to the client
(the server used to fail to send the message because the socket
wasn't in the right state for the message to get through).

- Most transfer errors that occur during a daemon transfer are now
returned to the user in addition to being logged (some messages are
intended to be daemon-only and are not affected by this).

- Fixed a bug in the daemon authentication code when using one of the
batch-processing options.

- We try to work around some buggy IPv6 implementations that fail to
implement IPV6_V6ONLY.  This should fix the "address in use" error
that some daemons get when running on an OS with a buggy IPv6
implementation.  Also, if the new code gets this error, we might
suggest that the user specify --ipv4 or --ipv6 (if we think it will
help).

- When the remote rsync dies, make a better effort to recover any error
messages it may have sent before dying (the local rsync used to just
die with a socket-write error).

- When using --delete and a --backup-dir that contains files that are
hard-linked to their destination equivalents, rsync now makes sure
that removed files really get removed (avoids a really weird rename()
behavior).

- Avoid a bogus run-time complaint about a lack of 64-bit integers when
the int64 type is defined as an off_t and it actually has 64-bits.

- Added a configure check for open64() without mkstemp64() so that we
can avoid using mkstemp() when such a combination is encountered.
This bypasses a problem writing out large temp files on OSes such as
AIX and HP-UX.

- Fixed an age-old crash problem with --read-batch on a local copy
(rsync was improperly assuming --whole-file for the local copy).

- When --dry-run (-n) is used and the destination directory does not
exist, rsync now produces a correct report of files that would be
sent instead of dying with a chdir() error.

- Fixed a bug that could cause a slow-to-connect rsync daemon to die
with an error instead of waiting for the connection to finish.

- Fixed an ssh interaction that could cause output to be lost when the
user chose to combine the output of rsync's stdout and stderr (e.g.
using the "2>&1").

- Fixed an option-parsing bug when --files-from got passed to a daemon.

ENHANCEMENTS:

- Added the --partial-dir=DIR option that lets you specify where to
(temporarily) put a partially transferred file (instead of over-
writing the destination file).  E.g.  --partial-dir=.rsync-partial
Also added support for the RSYNC_PARTIAL_DIR environment variable
that, when found, transforms a regular --partial option (such as
the convenient -P option) into one that also specifies a directory.

onto another partition on the receiving side and have rsync treat it
as matching a normal directory from the sender.

- Added the --inplace option that tells rsync to write each destination
file without using a temporary file.  The matching of existing data
in the destination file can be severely limited by this, but there
are also cases where this is more efficient (such as appending data).
Use only when needed (see the man page for more details).

- Added the "write only" option for the daemon's config file.

- Added long-option names for -4 and -6 (namely --ipv4 and --ipv6)
and documented all these options in the man page.

- Improved the handling of the --bwlimit option so that it's less
bursty, more accurate, and works properly over a larger range of
values.

- The rsync daemon-over-ssh code now looks for SSH_CONNECTION and

- Batch writing/reading has a brand-new implementation that is simpler,
fixes a few weird problems with the old code (such as no longer
sprinkling the batch files into different dirs or even onto different
systems), and is much less intrusive into the code (making it easier
to maintain for the future).  The new code generates just one data
file instead of three, which makes it possible to read the batch on
stdin via a remote shell.  Also, the old requirement of forcing the
same fixed checksum-seed for all batch processing has been removed.

- If an rsync daemon has a module set with "list = no" (which hides its
presence in the list of available modules), a user that fails to
authenticate gets the same "unknown module" error that they would get
if the module were actually unknown (while still logging the real
error to the daemon's log file).  This prevents fishing for module
names.

- The daemon's "refuse options" config item now allows you to match
option names using wildcards and/or the single-letter option names.

- Each transferred file now gets its permissions and modified-time
updated before the temp-file gets moved into place.  Previously, the
finished file would have a very brief window where its permissions
disallowed all group and world access.

- Added the ability to parse a literal IPv6 address in an "rsync:" URL
(e.g. rsync://[2001:638:500:101::21]:873/module/dir).

- The daemon's wildcard expanding code can now handle more than 1000
filenames (it's now limited by memory instead of having a hard-wired
limit).

INTERNAL:

- Some cleanup in the exclude code has saved some per-exclude memory
and made the code easier to maintain.

- Improved the argv-overflow checking for a remote command that has a
lot of args.

- Use rsyserr() in the various places that were still calling rprintf()
with strerror() as an arg.

- If an rsync daemon is listening on multiple sockets (to handle both
IPv4 and IPv6 to a single port), we now close all the unneeded file
handles after we accept a connection (we used to close just one of
them).

- Optimized the handling of larger block sizes (rsync used to slow to a
crawl if the block size got too large).

- Optimized away a loop in hash_search().

- Some improvements to the sanitize_path() and clean_fname() functions
makes them more efficient and produce better results (while still
being compatible with the file-name cleaning that gets done on both
sides when sending the file-list).

- Got rid of alloc_sanitize_path() after adding a destination-buffer
arg to sanitize_path() made it possible to put all the former's
functionality into the latter.

- The file-list that is output when at least 4 verbose options are
specified reports the uid value on the sender even when rsync is
not running as root (since we might be sending to a root receiver).

BUILD CHANGES:

- Added a "gen" target to rebuild most of the generated files,
including configure, config.h.in, the man pages, and proto.h.

- If "make proto" doesn't find some changes in the prototypes, the
proto.h file is left untouched (its time-stamp used to always be
updated).

- The variable $STRIP (that is optionally set by the install-strip target's rule) was changed to$INSTALL_STRIP because some systems
have \$STRIP already set in the environment.

- Fixed a build problem when SUPPORT_HARD_LINKS isn't defined.

- When cross-compiling, the gettimeofday() function is now assumed to
be a modern version that takes two-args (since we can't test it).

DEVELOPER RELATED:

- The scripts in the testsuite dir were cleaned up a bit and a few

- Some new diffs were added to the patches dir, and some accepted
ones were removed.

NEWS for rsync 2.6.2 (30 Apr 2004)
Protocol: 28 (unchanged)
Changes since 2.6.1:

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.

- Rsync now checks the return value of the close() function to
better report disk-full problems on an NFS file system.

- 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.)

- 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.

- Fixed a compile problem in the popt source for compilers that
don't support __attribute__.

DEVELOPER RELATED:

- Improved the testsuite's "merge" test to work on OSF1.

- Two new diffs were added to the patches dir.

NEWS for rsync 2.6.1 (26 Apr 2004)
Protocol: 28 (changed)
Changes since 2.6.0:

SECURITY FIXES:

- Paths sent to an rsync daemon are more thoroughly sanitized when
chroot is not used.  If you're running a non-read-only rsync
user privs you run rsync under is anything above "nobody".

ENHANCEMENTS:

- Lower memory use, more optimal transfer of data over the socket,
and lower CPU usage (see the INTERNAL section for details).

- The RSYNC_PROXY environment variable can now contain a
"USER:PASS@" prefix before the "HOST:PORT" information.
(Bardur Arantsson)

- 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.

- Documentation changes now attempt to describe some often mis-
understood features more clearly.

BUG FIXES:

- When -x (--one-file-system) is combined with -L (--copy-links) or
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 transferred
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

- 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.

- Fixed an option-parsing bug when --files-from was sent to a server
sender.

INTERNAL:

- Most of the I/O is now buffered, which results in a pretty large
speedup when running under MS Windows.  (Craig Barratt)

- Optimizations to the name-handling/comparing code have made some
significant reductions in user-CPU time for large file sets.

- Some cleanup of the variable types make the code more consistent.

- Reduced memory requirements of hard link preservation.
(J.W. Schultz)

- Implemented a new algorithm for hard-link handling that speeds up
the code significantly.  (J.W. Schultz and Wayne Davison)

- 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
earlier in the list than the files that are already present on the
receiving side.

- 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)

- More optimal data transmission for --hard-links (protocol 28).

- More optimal data transmission for --checksum (protocol 28).

- Less memory is used when --checksum is specified.

- Less memory is used in the file list (a per-file savings).

- 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.

- 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)

- 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).

- Improved the internal uid/gid code to be more portable and a
little more optimized.

- 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.

- Some cleanup of the exclude/include structures and its code made
things clearer (internally), simpler, and more efficient.

- 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.)

BUILD CHANGES:

- The configure script now accepts --with-rsyncd-conf=PATH to
override the default value of the /etc/rsyncd.conf file.

- Fixed configure bug when running "./configure --disable-ipv6".

- Fixed compilation problem on Tru64 Unix (having to do with

DEVELOPER RELATED:

- Fixed "make test" bug when build dir is not the source dir.

- Added a couple extra diffs in the "patches" dir, removed the ones
that got applied, and rebuilt the rest.

NEWS for rsync 2.6.0 (1 Jan 2004)
Protocol: 27 (changed)
Changes since 2.5.7:

ENHANCEMENTS:

* "ssh" is now the default remote shell for rsync.  If you want to
change this, configure like this:  "./configure --with-rsh=rsh".

* Added --files-from, --no-relative, --no-implied-dirs, and --from0.
Note that --from0 affects the line-ending character for all the
files read by the --*-from options. (Wayne Davison)

* Length of csum2 is now per-file starting with protocol version
27. (J.W. Schultz)

* Per-file dynamic block size is now sqrt(file length).  The
per-file checksum size is determined according to an algorithm
provided by Donovan Baarda which reduces the probability of rsync
algorithm corrupting data and falling back using the whole md4
checksums. (J.W. Schultz, Donovan Baarda)

* The --stats option no longer includes the (debug) malloc summary
unless the verbose option was specified at least twice.

* Added a new error/warning code for when files vanish from the
sending side.  Made vanished source files not interfere with the
file-deletion pass when --delete-after was specified.

* Various trailing-info sections are now preceded by a newline.

BUG FIXES:

* Fixed several exclude/include matching bugs when using wild-cards.
This has a several user-visible effects, all of which make the
matching more consistent and intuitive.  This should hopefully not
cause anyone problems since it makes the matching work more like
what people are expecting. (Wayne Davison)

- A pattern with a "**" no longer causes a "*" to match slashes.
For example, with "/*/foo/**", "foo" must be 2 levels deep.
[If your string has BOTH "*" and "**" wildcards, changing the
"*" wildcards to "**" will provide the old behavior in all
versions.]

- "**/foo" now matches at the base of the transfer (like /foo
does).  [Use "/**/foo" to get the old behavior in all versions.]

- A non-anchored wildcard term floats to match beyond the base of
the transfer.  E.g. "CVS/R*" matches at the end of the path,
just like the non-wildcard term "CVS/Root" does. [Use "/CVS/R*"
to get the old behavior in all versions.]

- Including a "**" in the match term causes it to be matched
against the entire path, not just the name portion, even if
there aren't any interior slashes in the term.  E.g. "foo**bar"
would exclude "/path/foo-bar" (just like before) as well as
"/foo-path/baz-bar" (unlike before).  [Use "foo*bar" to get the
old behavior in all versions.]

* The exclude list specified in the daemon's config file is now
properly applied to the pulled items no matter how deep the
user's file-args are in the source tree.  (Wayne Davison)

* For protocol version >= 27, mdfour_tail() is called when the
block size (including checksum_seed) is a multiple of 64.
Previously it was not called, giving the wrong MD4 checksum.
(Craig Barratt)

* For protocol version >= 27, a 64 bit bit counter is used in
mdfour.c as required by the RFC.  Previously only a 32 bit bit
counter was used, causing incorrect MD4 file checksums for
file sizes >= 512MB - 4.  (Craig Barratt)

* Fixed a crash bug when interacting with older rsync versions and
multiple files of the same name are destined for the same dir.
(Wayne Davison)

* Keep tmp names from overflowing MAXPATHLEN.

* Make --link-dest honor the absence of -p, -o, and -g.

* Made rsync treat a trailing slash in the destination in a more
consistent manner.

* Fixed file I/O error detection.  (John Van Essen)

* Fixed bogus "malformed address {hostname}" message in rsyncd log
when checking IP address against hostnames from "hosts allow"
and "hosts deny" parameters in config file.

* Print heap statistics when verbose >= 2 instead of when >= 1.

* Fixed a compression (-z) bug when syncing a mostly-matching file
that contains already-compressed data.  (Yasuoka Masahiko and
Wayne Davison)

* Fixed a bug in the --backup code that could cause deleted files
to not get backed up.

* When the backup code makes new directories, create them with mode
0700 instead of 0755 (since the directory permissions in the
backup tree are not yet copied from the main tree).

* Call setgroups() in a more portable manner.

* Improved file-related error messages to better indicate exactly
what pathname failed. (Wayne Davison)

* Fixed some bugs in the handling of --delete and --exclude when
using the --relative (-R) option. (Wayne Davison)

* Fixed bug that prevented regular files from replacing
special files and caused a directory in --link-dest or
--compare-dest to block the creation of a file with the
same path.  A directory still cannot be replaced by a
regular file unless --delete specified.  (J.W. Schultz)

* Detect and report when open or opendir succeed but read and
readdir fail caused by network filesystem issues and truncated
files.  (David Norwood, Michael Brown, J.W. Schultz)

* Added a fix that should give ssh time to restore the tty settings
if the user presses Ctrl-C at an ssh password prompt.

INTERNAL:

* Eliminated vestigial support for old versions that we stopped
supporting. (J.W. Schultz)

* Simplified some of the option-parsing code. (Wayne Davison)

* Some cleanup made to the exclude code, as well as some new

* Changed the protocol-version code so that it can interact at a
lower protocol level than the maximum supported by both sides.
Added an undocumented option, --protocol=N, to force the value
we advertise to the other side (primarily for testing purposes).
(Wayne Davison)

NEWS for rsync 2.5.7 (4 Dec 2003)
Protocol: 26 (unchanged)
Changes since 2.5.6:

SECURITY FIXES:

* Fix buffer handling bugs.  (Andrew Tridgell, Martin Pool, Paul
Russell, Andrea Barisani)

NEWS for rsync 2.5.6, aka "the dwd-between-jobs release" (26 Jan 2003)
Protocol: 26 (unchanged)
Changes since 2.5.5:

ENHANCEMENTS:

* The --delete-after option now implies --delete.  (Wayne Davison)

* The --suffix option can now be used with --backup-dir.  (Michael
Zimmerman)

* Combining "::" syntax with the --rsh/-e option now uses the
specified remote-shell as a transport to talk to a (newly-spawned)
server-daemon.  This allows someone to use daemon features, such
as modules, over a secure protocol, such as ssh.  (JD Paul)

* The rsync:// syntax for daemon connections is now accepted in the
destination field.

* If the file name given to --include-from or --exclude-from is "-",
rsync will read from standard input.  (J.W. Schultz)

* New option --link-dest which is like --compare-dest except that
unchanged files are hard-linked in to the destination directory.
(J.W. Schultz)

* Don't report an error if an excluded file disappears during an
rsync run.  (Eugene Chupriyanov and Bo Kersey)

* Added .svn to --cvs-exclude list to support subversion.  (Jon
Middleton)

* Properly support IPv6 addresses in the rsyncd.conf "hosts allow"
and "hosts deny" fields.  (Hideaki Yoshifuji)

* Changed exclude file handling to permit DOS or MAC style line
terminations.  (J.W. Schultz)

* Ignore errors from chmod when -p/-a/--preserve-perms is not set.
(Dave Dykstra)

BUG FIXES:

* Fix "forward name lookup failed" errors on AIX 4.3.3.  (John
L. Allen, Martin Pool)

* Generate each file's rolling-checksum data as we send it, not
in a separate (memory-eating) pass before hand.  This prevents
timeout errors on really large files. (Stefan Nehlsen)

* Fix compilation on Tru64.  (Albert Chin, Zoong Pham)

* Better handling of some client-server errors.  (Martin Pool)

* Fixed a crash that would occur when sending a list of files that
contains a duplicate name (if it sorts to the end of the file
list) and using --delete.  (Wayne Davison)

* Fixed the file-name duplicate-removal code when dealing with multiple
dups in a row. (Wayne Davison)

* Fixed a bug that caused rsync to lose the exit status of its child
processes and sometimes return an exit code of 0 instead of showing
an error.  (David R. Staples, Dave Dykstra)

* Fixed bug in --copy-unsafe-links that caused it to be completely
broken.  (Dave Dykstra)

* Prevent infinite recursion in cleanup code under certain circumstances.
(Sviatoslav Sviridov and Marc Espie)

* Fixed a bug that prevented rsync from creating intervening directories
when --relative-paths/-R is set.  (Craig Barratt)

* Prevent "Connection reset by peer" messages from Cygwin. (Randy O'Meara)

INTERNAL:

* Many code cleanups and improved internal documentation.  (Martin
Pool, Nelson Beebe)

* Portability fixes. (Dave Dykstra and Wayne Davison)

* More test cases.  (Martin Pool)

* Some test-case fixes.  (Brian Poole, Wayne Davison)

* Updated included popt to the latest vendor drop, version 1.6.4.
(Jos Backus)

means rsync should build on more platforms.  (Paul Green)

NEWS for rsync 2.5.5, aka Snowy River (2 Apr 2002)
Protocol: 26 (unchanged)
Changes since 2.5.4:

ENHANCEMENTS:

* With --progress, when a transfer is complete show the time taken;
otherwise show expected time to complete. (Cameron Simpson)

* Make "make install-strip" works properly, and "make install"
accepts a DESTDIR variable for help in building binary packages.
(Peter Breitenlohner, Greg Louis)

* If configured with --enable-maintainer-mode, then on receipt of
a fatal signal rsync will try to open an xterm running gdb,
similarly to Samba's "panic action" or GNOME's bug-buddy.
(Martin Pool)

BUG FIXES:

* Fix situation where failure to fork (e.g. because out of process
slots) would cause rsync to kill all processes owned by the
current user.  Yes, really!  (Paul Haas, Martin Pool)

* Fix test suite on Solaris.  (Jos Backus, Martin Pool)

* Fix minor memory leak in socket code.  (Dave Dykstra, Martin
Pool.)

* Fix --whole-file problem that caused it to be the default even
for remote connections.  (Martin Pool, Frank Schulz)

* Work around bug in Mac OS X mkdir(2), which cannot handle
trailing slashes.
<http://www.opensource.apple.com/bugs/X/BSD%20Kernel/2734739.html>
(Martin Pool)

* Improved network error handling.  (Greg A. Woods)

NEWS for rsync 2.5.4, aka "Imitation lizard skin" (13 Mar 2002)
Protocol: 26 (unchanged)
Changes since 2.5.3:

BUG FIXES:

* Additional fix for zlib double-free bug.  (Martin Pool, Andrew
Tridgell) (CVE CAN-2002-0059)

ENHANCEMENTS:

* Merge in changes from zlib 1.1.3 to zlib 1.1.4.  (Jos Backus)
(Note that rsync still uses a custom version of zlib; you can

* Additional test cases for --compress.  (Martin Pool)

NEWS for rsync 2.5.3, aka "Happy 26" (11 Mar 2002)
Protocol: 26 (unchanged)
Changes since 2.5.2:

SECURITY FIXES:

* Make sure that supplementary groups are removed from a server
process after changing uid and gid. (Ethan Benson) (Debian bug
#132272, CVE CAN-2002-0080)

BUG FIXES:

* Fix zlib double-free bug.  (Owen Taylor, Mark J Cox) (CVE
CAN-2002-0059)

* Fixed problem that in many cases caused the error message
unexpected read size of 0 in map_ptr
and resulted in the wrong data being copied.

* Fixed compilation errors on some systems caused by the use of
"unsigned int64" in rsync.h.

* Fixed problem on systems such as Sunos4 that do not support realloc
on a NULL pointer; error was "out of memory in flist_expand".

* Fix for rsync server processes hanging around after the client
unexpectedly disconnects.  (Colin Walters) (Debian bug #128632)

* Cope with BSD systems on which mkdir() will not accept a trailing
slash.

ENHANCEMENTS:

* Merge in changes from zlib 1.1.2 to zlib 1.1.3.  (Note that
rsync still uses a custom version of zlib; you can not just link
against a system library.  See zlib/README.rsync)

* Command to initiate connections is only shown with -vv, rather
than -v as in 2.5.2.  Output from plain -v is more similar to
what was historically used so as not to break scripts that try
to parse the output.

* Added --no-whole-file and --no-blocking-io options (Dave Dykstra)

and added documentation in the man page (Jos Backus)

* If the daemon is unable to fork a child to accept a connection,
print an error message.  (Colin Walters)

NEWS for rsync 2.5.2 (26 Jan 2002)
Protocol: 26 (changed)
Changes since 2.5.1:

SECURITY FIXES:

* Signedness security patch from Sebastian Krahmer
<krahmer@suse.de> -- in some cases we were not sufficiently

BUG FIXES:

* Fix possible string mangling in log files.

* Fix for setting local address of outgoing sockets.

* Better handling of hardlinks and devices on platforms with
64-bit dev_t or ino_t.

* Name resolution on machines supporting IPv6 is improved.

* Fix for device nodes.  (dann frazier)   (Debian #129135)

ENHANCEMENTS:

* With -v, rsync now shows the command used to initiate an ssh/rsh
connection.

* --statistics now shows memory heap usage on platforms that
support mallinfo().

* "The Ted T'so school of program optimization": make progress
visible and people will think it's faster.  (With --progress,
rsync will show you how many files it has seen as it builds the
file_list, giving some indication that it has not hung.)

* Improvements to batch mode support.  This is still experimental
but testing would be welcome.   (Jos Backus)

* New --ignore-existing option, patch previously distributed with
Vipul's Razor.  (Debian #124286)

NEWS for rsync 2.5.1 (3 Jan 2002)
Protocol: 25 (unchanged)
Changes since 2.5.0:

BUG FIXES:

* Fix for segfault in --daemon mode configuration parser.  (Paul
Mackerras)

* Correct string<->address parsing for both IPv4 and 6.
(YOSHIFUJI Hideaki, SUMIKAWA Munechika and Jun-ichiro "itojun"
Hagino)

* Various fixes for IPv6 support.  (Dave Dykstra)

* rsync.1 typo fix.  (Matt Kraai)

* Test suite typo fixes.  (Tom Schmidt)

* rsync.1 grammar and clarity improvements.  (Edward
Welbourne)

* Correction to ./configure tests for inet_ntop.  (Jeff Garzik)

ENHANCEMENTS:

* --progress and -P now show estimated data transfer rate (in a
multiple of bytes/s) and estimated time to completion.  (Rik
Faith)

* --no-detach option, required to run as a W32 service and also
useful when running on Unix under daemontools, AIX's SRC, or a
debugger.  (Max Bowsher, Jos Backus)

* Clearer error messages for some conditions.

NEWS for rsync 2.5.0 (30 Nov 2001)
Protocol: 25 (changed)
Changes since 2.4.6:

ANNOUNCEMENTS

* Martin Pool <mbp@samba.org> is now a co-maintainer.

NEW FEATURES

* Support for LSB-compliant packaging <http://www.linuxbase.org/>

* Shell wildcards are allowed in "auth users" lines.

* Merged UNC rsync+ patch to support creation of standalone patch
sets.  By Bert J. Dempsey and Debra Weiss, updated by Jos
Backus.  <http://www.ils.unc.edu/i2dsi/unc_rsync+.html>

* IPv6 support based on a patch from KAME.net, on systems
including modern versions of Linux, Solaris, and HP-UX.  Also
includes IPv6 compatibility functions for old OSs by the
Internet Software Consortium, Paul Vixie, the OpenSSH
portability project, and OpenBSD.

ENHANCEMENTS

* Include/exclude cluestick: with -vv, print out whether files are
included or excluded and why.

* Many error messages have more friendly explanations and more
details.

* Manual page improvements plus scanty protocol documentation.

* When running as --daemon in the background and using a "log
file" rsyncd.conf directive, close the log file every time it is
open when going to sleep on the socket.  This allows the log
file to get cleaned out by another process.

* Change to using libpopt rather than getopt for processing
options.	This makes the code cleaner and the behaviour more
consistent across platforms.  popt is included and built if not
installed on the platform.

* More details in --version, including note about whether 64-bit

* MD4 code may use less CPU cycles.

* Use mkstemp on systems where it is secure.  If we use mktemp,
explain that we do it in a secure way.

* --whole-file is the default when source and target are on the
local machine.

BUG FIXES:

* Fix for various bugs causing rsync to hang.

* Attempt to fix Large File Summit support on AIX.

* Attempt to fix error handling lockup bug.

* Give a non-0 exit code if *any* of the files we have been asked
to transfer fail to transfer.

* For log messages containing ridiculously long strings that might
overflow a buffer rsync no longer aborts, but rather prints an
ellipsis at the end of the string.  (Patch from Ed Santiago.)

PLATFORMS:

* Improved support for UNICOS (tested on Cray T3E and Cray SV1)

* autoconf2.52 (or later) is now required to rebuild the autoconf
scripts.  It is not required to simply build rsync.

* Platforms thought to work in this release:

Cray SV1 UNICOS 10.0.0.8 cc
Debian Linux 2.2 UltraSparc gcc
Debian Linux testing/unstable ARM gcc
FreeBSD 3.3-RELEASE i386 cc
FreeBSD 4.1.1-RELEASE i386 cc
FreeBSD 4.3-STABLE i386 cc
HP PA-RISC HP-UX 10.20 gcc
HP PA-RISC HP-UX 11.11 cc
IRIX 6.5 MIPS cc
IRIX 6.5 MIPS gcc
Mac OS X PPC (--disable-ipv6) cc
NetBSD 1.5 i386 gcc
NetBSD Current i386 cc
OpenBSD 2.5 Sparc gcc
OpenBSD 2.9 i386 cc
OpenBSD Current i386 cc
RedHat 6.2 i386 gcc
RedHat 6.2 i386 insure++
RedHat 7.0 i386 gcc
RedHat 7.1 i386 (Kernel 2.4.10) gcc
Slackware 8.0 i686 (Kernel 2.4.10)
Solaris 8 UltraSparc cc
Solaris 8 UltraSparc gcc
Solaris 8 i386 gcc
SuSE 7.1 i386 gcc2.95.2
SuSE 7.1 ppc gcc2.95.2
i386-pc-sco3.2v5.0.5 cc
i386-pc-sco3.2v5.0.5 gcc
powerpc-ibm-aix4.3.3.0 cc
i686-unknown-sysv5UnixWare7.1.0 gcc
i686-unknown-sysv5UnixWare7.1.0 cc

TESTING:

* The existing test.sh script by Phil Hands has been merged into a
test framework that works from both "make check" and the Samba
build farm.

Partial Protocol History
RELEASE DATE	VER.	DATE OF COMMIT*	PROTOCOL
06 Nov 2006	2.6.9			29
22 Apr 2006	2.6.8			29
11 Mar 2006	2.6.7			29
28 Jul 2005	2.6.6			29
01 Jun 2005	2.6.5			29
30 Mar 2005	2.6.4	17 Jan 2005	29
30 Sep 2004	2.6.3			28
30 Apr 2004	2.6.2			28
26 Apr 2004	2.6.1	08 Jan 2004	28
01 Jan 2004	2.6.0	10 Apr 2003	27 (MAX=40)
04 Dec 2003	2.5.7			26
26 Jan 2003	2.5.6			26
02 Apr 2002	2.5.5			26
13 Mar 2002	2.5.4			26
11 Mar 2002	2.5.3			26
26 Jan 2002	2.5.2	11 Jan 2002	26
03 Jan 2002	2.5.1			25
30 Nov 2001	2.5.0	23 Aug 2001	25
06 Sep 2000	2.4.6			24
19 Aug 2000	2.4.5			24
29 Jul 2000	2.4.4			24
09 Apr 2000	2.4.3			24
30 Mar 2000	2.4.2			24
30 Jan 2000	2.4.1	29 Jan 2000	24
29 Jan 2000	2.4.0	28 Jan 2000	23
25 Jan 2000	2.3.3	23 Jan 2000	22
08 Nov 1999	2.3.2	26 Jun 1999	21
06 Apr 1999	2.3.1			20
15 Mar 1999	2.3.0	15 Mar 1999	20
25 Nov 1998	2.2.1			19
03 Nov 1998	2.2.0			19
09 Sep 1998	2.1.1			19
20 Jul 1998	2.1.0			19
17 Jul 1998	2.0.19			19
18 Jun 1998	2.0.17			19
01 Jun 1998	2.0.16			19
27 May 1998	2.0.13	27 May 1998	19
26 May 1998	2.0.12			18
22 May 1998	2.0.11			18
18 May 1998	2.0.9	18 May 1998	18
17 May 1998	2.0.8			17
15 May 1998	2.0.1			17
14 May 1998	2.0.0			17
17 Apr 1998	1.7.4			17
13 Apr 1998	1.7.3			17
05 Apr 1998	1.7.2			17
26 Mar 1998	1.7.1			17
26 Mar 1998	1.7.0	26 Mar 1998	17 (MAX=30)
13 Jan 1998	1.6.9	13 Jan 1998	15 (MAX=20)

* DATE OF COMMIT is the date the protocol change was committed to CVS.