Preparing for release of 2.6.7

[rsync.git] / OLDNEWS

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
      combined with --link-dest).

    - 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
      destination dir to tickle the bug in a recent version).

  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.

\f
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
      the buffers in readfd_unbuffered() to be too small to receive normal
      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:

    - Added the --only-write-batch=FILE option that may be used (instead
      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
      rsync from being built without symlink or hard-link support.

    - 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.

\f
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
      warning about this at the end of the run and exit with a new error
      code (25).

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

    - The "ignore nonreadable" daemon parameter used to erroneously affect
      readable symlinks that pointed to a non-existent file.

    - 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 daemon was the receiver.

    - 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 the --copy-dest option, which works like --link-dest except
      that it locally copies identical files instead of hard-linking them.

    - 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
      the patches dir.)  Also added "address".  The command-line options
      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.)

    - 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 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
      read-only side can succeed.

    - 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:

    - Added better checking of the checksum-header values that come over
      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
      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 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.

\f
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
      disabled, *please upgrade*, ESPECIALLY if the user privs you run
      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
      term "sent" instead of "wrote" and "received" instead of "read".  If
      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
      "written" to "sent" and "read" to "received".

    - 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
      older senders don't tell the receiver that the file had a read
      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
      allows uploading at all) in addition to the old download exclusion.

    - 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
      the receiving side to follow symlinks.  See the --keep-dirlinks
      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").

  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.

    - Added --keep-dirlinks (-K), which allows you to symlink 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
      SSH2_CLIENT in addition to SSH_CLIENT to figure out the IP address.

    - Added the --checksum-seed=N option for advanced users.

    - 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
      new tests added.

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

\f
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.

\f
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
      daemon with chroot disabled, *please upgrade*, ESPECIALLY if the
      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
      --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 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
      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.

  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
      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.

    - 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
      sockaddr.sa_len and sockaddr.sin_len).

  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.

\f
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
      defines added to enhance readability. (Wayne Davison)

    * 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)

\f
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)

\f
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)

    * Updated config.guess and config.sub to latest versions; this
      means rsync should build on more platforms.  (Paul Green)

\f
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)

\f
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
      not just link against a system library.  See zlib/README.rsync)

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

\f
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)

    * Made the --write-batch and --read-batch options actually work
      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)

\f
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
      careful about reading integers from the network.

  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)

\f
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.

\f
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
      files, symlinks and hardlinks are supported.

    * 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.
\f
Partial Protocol History
        RELEASE DATE    VER.    DATE OF COMMIT* PROTOCOL
        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.