Annotation of embedaddon/rsync/NEWS.md, revision 1.1.1.1

1.1       misho       1: <a name="3.2.3"></a>
                      2: 
                      3: # NEWS for rsync 3.2.3 (6 Aug 2020)
                      4: 
                      5: ## Changes in this version:
                      6: 
                      7: ### BUG FIXES:
                      8: 
                      9:  - Fixed a bug in the xattr code that was freeing the wrong object when trying
                     10:    to cleanup the xattr list.
                     11: 
                     12:  - Fixed a bug in the xattr code that was not leaving room for the "rsync."
                     13:    prefix in some instances where it needed to be added.
                     14: 
                     15:  - Restored the ability to use `--bwlimit=0` to specify no bandwidth limit.  (It
                     16:    was accidentally broken in 3.2.2.)
                     17: 
                     18:  - Fix a bug when combining `--delete-missing-args` with `--no-implied-dirs` &
                     19:    `-R` where rsync might create the destination path of a missing arg.  The
                     20:    code also avoids some superfluous warnings for nested paths of removed args.
                     21: 
                     22:  - Fixed an issue where hard-linked devices could cause the rdev_major value to
                     23:    get out of sync between the sender and the receiver, which could cause a
                     24:    device to get created with the wrong major value in its major,minor pair.
                     25: 
                     26:  - Rsync now complains about a missing `--temp-dir` before starting any file
                     27:    transfers.
                     28: 
                     29:  - A completely empty source arg is now a fatal error.  This doesn't change
                     30:    the handling of implied dot-dir args such as "localhost:" and such.
                     31: 
                     32: ### ENHANCEMENTS:
                     33: 
                     34:  - Allow `--max-alloc=0` to specify no limit to the alloc sanity check.
                     35: 
                     36:  - Allow `--block-size=SIZE` to specify the size using units (e.g. "100K").
                     37: 
                     38:  - The name of the id-0 user & group are now sent to the receiver along with
                     39:    the other user/group names in the transfer (instead of assuming that both
                     40:    sides have the same id-0 names).
                     41: 
                     42:  - Added the `--stop-after=MINS` and `--stop-at=DATE_TIME` options (with the
                     43:    `--time-limit=MINS` option accepted as an alias for `--stop-after`).  This
                     44:    is an enhanced version of the time-limit patch from the patches repo.
                     45: 
                     46:  - Added the `name converter` daemon parameter to make it easier to convert
                     47:    user & group names inside a chrooted daemon module.  This is based on the
                     48:    nameconverter patch with some improvements, including a tweak to the request
                     49:    protocol (so if you used this patch in the past, be sure to update your
                     50:    converter script to use newlines instead of null chars).
                     51: 
                     52:  - Added `--crtimes` (`-N`) option for preserving the file's create time (I
                     53:    believe that this is macOS only at the moment).
                     54: 
                     55:  - Added `--mkpath` option to tell rsync that it should create a non-existing
                     56:    path component of the destination arg.
                     57: 
                     58:  - Added `--stderr=errors|all|client` to replace the `--msgs2stderr` and
                     59:    `--no-msgs2stderr` options (which are still accepted).  The default use of
                     60:    stderr was changed to be `--stderr=errors` where all the processes that have
                     61:    stderr available output directly to stderr, which should help error messages
                     62:    get to the user more quickly, especially when doing a push (which includes
                     63:    local copying).  This also allows rsync to exit quickly when a receiver
                     64:    failure occurs, since rsync doesn't need to try to keep the connection alive
                     65:    long enough for the fatal error to go from the receiver to the generator to
                     66:    the sender.  The old default can be requested via `--stderr=client`.  Also
                     67:    changed is that a non-default stderr mode is conveyed to the remote rsync
                     68:    (using the older option names) instead of requiring the user to use
                     69:    `--remote-option` (`-M`) to tell the remote rsync what to do.
                     70: 
                     71:  - Added the ability to specify "@netgroup" names to the `hosts allow` and
                     72:    `hosts deny` daemon parameters.  This is a finalized version of the
                     73:    netgroup-auth patch from the patches repo.
                     74: 
                     75:  - Rsync can now hard-link symlinks on FreeBSD due to it making ues of the
                     76:    linkat() function when it is available.
                     77: 
                     78:  - Output file+line info on out-of-memory & overflow errors while also avoiding
                     79:    the output of alternate build-dir path info that is not useful to the user.
                     80: 
                     81:  - Change configure to know that Cygwin supports Linux xattrs.
                     82: 
                     83:  - Improved the testsuite on FreeBSD & Cygwin.
                     84: 
                     85:  - Added some compatibility code for HPE NonStop platforms.
                     86: 
                     87:  - Improved the INSTALL.md info.
                     88: 
                     89:  - Added a few more suffixes to the default skip-compress list.
                     90: 
                     91:  - Improved configure's error handling to notify about several issues at once
                     92:    instead of one by one (for the newest optional features).
                     93: 
                     94: ### INTERNAL:
                     95: 
                     96:  - Use a simpler overflow check idiom in a few spots.
                     97: 
                     98:  - Use a C99 Flexible Array for a trailing variable-size filename in a struct
                     99:    (with a fallback to the old 1-char string kluge for older compilers).
                    100: 
                    101: ------------------------------------------------------------------------------
                    102: <a name="3.2.2"></a>
                    103: 
                    104: # NEWS for rsync 3.2.2 (4 Jul 2020)
                    105: 
                    106: ## Changes in this version:
                    107: 
                    108: ### BUG FIXES:
                    109: 
                    110:  - Avoid a crash when a daemon module enables `transfer logging` without
                    111:    setting a `log format` value.
                    112: 
                    113:  - Fixed installing rsync-ssl script from an alternate build dir.
                    114: 
                    115:  - Fixed the updating of configure.sh from an alternate build dir.
                    116: 
                    117:  - Apple requires the asm function name to begin with an underscore.
                    118: 
                    119:  - Avoid a test failure in the daemon test when `--atimes` is disabled.
                    120: 
                    121: ### ENHANCEMENTS:
                    122: 
                    123:  - Allow the server side to restrict checksum & compression choices via the
                    124:    same environment variables the client uses.  The env vars can be divided
                    125:    into "client list & server list" by the "`&`" char or the same list can
                    126:    apply to both.
                    127: 
                    128:  - Simplify how the negotiation environment variables apply when interacting
                    129:    with an older rsync and also when a list contains only invalid names.
                    130: 
                    131:  - Do not allow a negotiated checksum or compression choice of "none" unless
                    132:    the user authorized it via an environment variable or command-line option.
                    133: 
                    134:  - Added the `--max-alloc=SIZE` option to be able to override the memory
                    135:    allocator's sanity-check limit.  It defaults to 1G (as before) but the error
                    136:    message when exceeding it specifically mentions the new option so that you
                    137:    can differentiate an out-of-memory error from a failure of this limit.  It
                    138:    also allows you to specify the value via the RSYNC_MAX_ALLOC environment
                    139:    variable.
                    140: 
                    141:  - Add the "open atime" daemon parameter to allow a daemon to always enable or
                    142:    disable the use of O_NOATIME (the default is to let the user control it).
                    143: 
                    144:  - The default systemd config was changed to remove the `ProtectHome=on`
                    145:    setting since rsync is often used to serve files in /home and /root and this
                    146:    seemed a bit too strict.  Feel free to use `systemctl edit rsync` to add
                    147:    that restriction (or maybe `ProtectHome=read-only`), if you like.  See the
                    148:    3.2.0 NEWS for the other restrictions that were added compared to 3.1.3.
                    149: 
                    150:  - The memory allocation functions now automatically check for a failure and
                    151:    die when out of memory.  This eliminated some caller-side check-and-die
                    152:    code and added some missing sanity-checking of allocations.
                    153: 
                    154:  - Put optimizations into their own list in the `--version` output.
                    155: 
                    156:  - Improved the man page a bit more.
                    157: 
                    158: ### PACKAGING RELATED:
                    159: 
                    160:  - Prepared the checksum code for an upcoming xxHash release that provides new
                    161:    XXH3 (64-bit) & XXH128 (128-bit) checksum routines.  These will not be
                    162:    compiled into rsync until the xxhash v0.8.0 include files are installed on
                    163:    the build host, and that release is a few weeks away at the time this was
                    164:    written.  So, if it's now the future and you have packaged and installed
                    165:    xxhash-0.8.0-devel, a fresh rebuild of rsync 3.2.2 will give you the new
                    166:    checksum routines.  Just make sure that the new rsync package depends on
                    167:    xxhash >= 0.8.0.
                    168: 
                    169: ### DEVELOPER RELATED:
                    170: 
                    171:  - Moved the version number out of configure.ac into its own version.h file so
                    172:    that we don't need to reconfigure just because the version number changes.
                    173: 
                    174:  - Moved the daemon parameter list into daemon-parm.txt so that an awk script
                    175:    can create the interrelated structs and accessors that loadparm.c needs.
                    176: 
                    177: ------------------------------------------------------------------------------
                    178: <a name="3.2.1"></a>
                    179: 
                    180: # NEWS for rsync 3.2.1 (22 Jun 2020)
                    181: 
                    182: ## Changes in this version:
                    183: 
                    184: ### BUG FIXES:
                    185: 
                    186:  - Fixed a potential build issue with the MD5 assembly-language code by
                    187:    removing some non-portable directives.
                    188: 
                    189:  - Use the preprocessor with the asm file to ensure that if the code is
                    190:    unneeded, it doesn't get built.
                    191: 
                    192:  - Avoid the stack getting set to executable when including the asm code.
                    193: 
                    194:  - Some improvements in the SIMD configure testing to try to avoid build
                    195:    issues, such as avoiding a clang++ core dump when `-g` is combined with
                    196:    `-O2`.  Note that clang++ is quite buggy in this area, and it does still
                    197:    crash for some folks, so just use `--disable-simd` if you need to avoid
                    198:    their buggy compiler (since the configure test is apparently not finding
                    199:    all the compilers that will to crash and burn).
                    200: 
                    201:  - Fixed an issue in the md2man script when building from an alternate dir.
                    202: 
                    203:  - Disable `--atimes` on macOS (it apparently just ignores the atime change).
                    204: 
                    205: ### ENHANCEMENTS:
                    206: 
                    207:  - The use of `--backup-dir=STR` now implies `--backup`.
                    208: 
                    209:  - Added `--zl=NUM` as a short-hand for `--compress-level=NUM`.
                    210: 
                    211:  - Added `--early-input=FILE` option that allows the client to send some
                    212:    data to a daemon's (optional) "early exec" script on its stdin.
                    213: 
                    214:  - Mention atimes in the capabilities list that `--version` outputs.
                    215: 
                    216:  - Mention either "default protect-args" or "optional protect-args" in the
                    217:    `--version` capabilities depending on how rsync was configured.
                    218: 
                    219:  - Some info on optimizations is now elided from the `--version` capabilities
                    220:    since they aren't really user-facing capabilities.  You can still see the
                    221:    info (plus the status of a couple extra optimizations) by repeating the
                    222:    `--version` option (e.g. `-VV`).
                    223: 
                    224:  - Updated various URLs to be https instead of http.
                    225: 
                    226:  - Some documentation improvements.
                    227: 
                    228: ### PACKAGING RELATED:
                    229: 
                    230:  - If you had to use `--disable-simd` for 3.2.0, you might want to try removing
                    231:    that and see if it will succeed or auto-disable.  Some buggy clang++
                    232:    compilers are still not auto disabled, though.
                    233: 
                    234:  - The MD5 asm code is now under its own configure flag (not shared with the
                    235:    SIMD setting), so if you have any issues compiling it, re-run configure with
                    236:    `--disable-asm`.
                    237: 
                    238:  - Merged the OLDNEWS.md file into NEWS.md.
                    239: 
                    240: ------------------------------------------------------------------------------
                    241: <a name="3.2.0"></a>
                    242: 
                    243: # NEWS for rsync 3.2.0 (19 Jun 2020)
                    244: 
                    245: ## Changes in this version:
                    246: 
                    247: ### BUG FIXES:
                    248: 
                    249:  - Avoid a potential out-of-bounds read in daemon mode if argc can be made to
                    250:    become 0.
                    251: 
                    252:  - Fix the default list of skip-compress files for non-daemon transfers.
                    253: 
                    254:  - Fix xattr filter rules losing an 'x' attribute in a non-local transfer.
                    255: 
                    256:  - Avoid an error when a check for a potential fuzzy file happens to reference
                    257:    a directory.
                    258: 
                    259:  - Make the atomic-rsync helper script have a more consistent error-exit.
                    260: 
                    261:  - Make sure that a signal handler's use of exit_cleanup() calls `_exit()`
                    262:    instead of exit().
                    263: 
                    264:  - Various zlib fixes, including security fixes for CVE-2016-9843,
                    265:    CVE-2016-9842, CVE-2016-9841, and CVE-2016-9840.
                    266: 
                    267:  - Fixed an issue with `--remove-source-files` not removing a source symlink
                    268:    when combined with `--copy-links`.
                    269: 
                    270:  - Fixed a bug where the daemon would fail to write early fatal error messages
                    271:    to the client, such as refused or unknown command-line options.
                    272: 
                    273:  - Fixed the block-size validation logic when dealing with older protocols.
                    274: 
                    275:  - Some rrsync fixes and enhancements to handle the latest options.
                    276: 
                    277:  - Fixed a problem with the `--link-dest`|`--copy-dest` code when `--xattrs`
                    278:    was specified along with multiple alternate-destination directories (it
                    279:    could possibly choose a bad file match while trying to find a better xattr
                    280:    match).
                    281: 
                    282:  - Fixed a couple bugs in the handling of files with the `--sparse` option.
                    283: 
                    284:  - Fixed a bug in the writing of the batch.sh file (w/`--write-batch`) when the
                    285:    source & destination args were not last on the command-line.
                    286: 
                    287:  - Avoid a hang when an overabundance of messages clogs up all the I/O buffers.
                    288: 
                    289:  - Fixed a mismatch in the RSYNC_PID values put into the environment of
                    290:    `pre-xfer exec` and a `post-xfer exec`.
                    291: 
                    292:  - Fixed a crash in the `--iconv` code.
                    293: 
                    294:  - Fixed a rare crash in the popt_unalias() code.
                    295: 
                    296: ### ENHANCEMENTS:
                    297: 
                    298:  - The default systemd config was made stricter by default.  For instance,
                    299:    `ProtectHome=on` (which hides content in /root and /home/USER dirs),
                    300:    `ProtectSystem=full` (which makes /usr, /boot, & /etc dirs read-only), and
                    301:    `PrivateDevices=on` (which hides devices).  You can override any of these
                    302:    using the standard `systemctl edit rsync` and add one or more directives
                    303:    under a `[Service]` heading (and restart the rsync service).
                    304: 
                    305:  - Various checksum enhancements, including the optional use of openssl's MD4 &
                    306:    MD5 checksum algorithms, some x86-64 optimizations for the rolling checksum,
                    307:    some x86-64 optimizations for the (non-openssl) MD5 checksum, the addition
                    308:    of xxHash checksum support, and a negotiation heuristic that ensures that it
                    309:    is easier to add new checksum algorithms in the future.  The environment
                    310:    variable `RSYNC_CHECKSUM_LIST` can be used to customize the preference order
                    311:    of the negotiation, or use `--checksum-choice` (`--cc`) to force a choice.
                    312: 
                    313:  - Various compression enhancements, including the addition of zstd and lz4
                    314:    compression algorithms and a negotiation heuristic that picks the best
                    315:    compression option supported by both sides.  The environment variable
                    316:    `RSYNC_COMPRESS_LIST` can be used to customize the preference order of the
                    317:    negotiation, or use `--compress-choice` (`--zc`) to force a choice.
                    318: 
                    319:  - Added a `--debug=NSTR` option that outputs details of the new negotiation
                    320:    strings (for checksums and compression).  The first level just outputs the
                    321:    result of each negotiation on the client, level 2 outputs the values of the
                    322:    strings that were sent to and received from the server, and level 3 outputs
                    323:    all those values on the server side too (when the server was given the debug
                    324:    option).
                    325: 
                    326:  - The `--debug=OPTS` command-line option is no longer auto-forwarded to the
                    327:    remote rsync which allows for the client and server to have different levels
                    328:    of debug specified. This also allows for newer debug options to be
                    329:    specified, such as using `--debug=NSTR` to see the negotiated hash result,
                    330:    without having the command fail if the server version is too old to handle
                    331:    that debug item. Use `-M--debug=OPTS` to send the options to the remote side.
                    332: 
                    333:  - Added the `--atimes` option based on the long-standing patch (just with some
                    334:    fixes that the patch has been needing).
                    335: 
                    336:  - Added `--open-noatime` option to open files using `O_NOATIME`.
                    337: 
                    338:  - Added the `--write-devices` option based on the long-standing patch.
                    339: 
                    340:  - Added openssl & preliminary gnutls support to the rsync-ssl script, which is
                    341:    now installed by default.  This was unified with the old stunnel-rsync
                    342:    helper script to simplify packaging.  Note that the script accepts the use
                    343:    of `--type=gnutls` for gnutls testing, but does not look for gnutls-cli on
                    344:    the path yet.  The use of `--type=gnutls` will not work right until
                    345:    gnutls-cli no longer drops data.
                    346: 
                    347:  - Rsync was enhanced to set the `RSYNC_PORT` environment variable when running
                    348:    a daemon-over-rsh script. Its value is the user-specified port number (set
                    349:    via `--port` or an rsync:// URL) or 0 if the user didn't override the port.
                    350: 
                    351:  - Added the `proxy protocol` daemon parameter that allows your rsyncd to know
                    352:    the real remote IP when it is setup behind a proxy.
                    353: 
                    354:  - Added negated matching to the daemon's `refuse options` setting by using
                    355:    match strings that start with a `!` (such as `!compress*`).  This lets you
                    356:    refuse all options except for a particular approved list, for example.  It
                    357:    also lets rsync refuse certain options by default (such as `write-devices`)
                    358:    while allowing the config to override that, as desired.
                    359: 
                    360:  - Added the `early exec` daemon parameter that runs a script before the
                    361:    transfer parameters are known, allowing some early setup based on module
                    362:    name.
                    363: 
                    364:  - Added status output in response to a signal (via both SIGINFO & SIGVTALRM).
                    365: 
                    366:  - Added `--copy-as=USER` option to give some extra security to root-run rsync
                    367:    commands into/from untrusted directories (such as backups and restores).
                    368: 
                    369:  - When resuming the transfer of a file in the `--partial-dir`, rsync will now
                    370:    update that partial file in-place instead of creating yet another tmp file
                    371:    copy.  This requires both sender & receiver to be at least v3.2.0.
                    372: 
                    373:  - Added support for `RSYNC_SHELL` & `RSYNC_NO_XFER_EXEC` environment variables
                    374:    that affect the early, pre-xfer, and post-xfer exec rsync daemon parameters.
                    375: 
                    376:  - Optimize the `--fuzzy --fuzzy` heuristic to avoid the fuzzy directory scan
                    377:    until all other basis-file options are exhausted (such as `--link-dest`).
                    378: 
                    379:  - Have the daemon log include the normal-exit sent/received stats when the
                    380:    transfer exited with an error when possible (i.e. if it is the sender).
                    381: 
                    382:  - The daemon now locks its pid file (when configured to use one) so that it
                    383:    will not fail to start when the file exists but no daemon is running.
                    384: 
                    385:  - Various man page improvements, including some html representations (that
                    386:    aren't installed by default).
                    387: 
                    388:  - Made `-V` the short option for `--version` and improved its information.
                    389: 
                    390:  - Pass the `-4` or `-6` option to the ssh command, making it easier to type
                    391:    than `--rsh='ssh -4'` (or the `-6` equivalent).
                    392: 
                    393:  - Added example config for rsyncd SSL proxy configs to rsyncd.conf.
                    394: 
                    395:  - More errors messages now mention if the error is coming from the sender or
                    396:    the receiver.
                    397: 
                    398: ### PACKAGING RELATED:
                    399: 
                    400:  - Add installed bash script: /usr/bin/rsync-ssl
                    401: 
                    402:  - Add installed man page: /usr/man/man1/rsync-ssl.1
                    403: 
                    404:  - Tweak auxiliary doc file names, such as: README.md, INSTALL.md, & NEWS.md.
                    405: 
                    406:  - The rsync-ssl script wants to run openssl or stunnel4, so consider adding a
                    407:    dependency for one of those options (though it's probably fine to just let
                    408:    it complain about being unable to find the program and let the user decide
                    409:    if they want to install one or the other).
                    410: 
                    411:  - If you packaged rsync + rsync-ssl + rsync-ssl-daemon as separate packages,
                    412:    the rsync-ssl package is now gone (rsync-ssl should be considered to be
                    413:    mainstream now that Samba requires SSL for its rsync daemon).
                    414: 
                    415:  - Add _build_ dependency for liblz4-dev, libxxhash-dev, libzstd-dev, and
                    416:    libssl-dev.  These development libraries will give rsync extra compression
                    417:    algorithms, extra checksum algorithms, and allow use of openssl's crypto
                    418:    lib for (potentially) faster MD4/MD5 checksums.
                    419: 
                    420:  - Add _build_ dependency for g++ or clang++ on x86_64 systems to enable the
                    421:    SIMD checksum optimizations.
                    422: 
                    423:  - Add _build_ dependency for _either_ python3-cmarkcfm or python3-commonmark
                    424:    to allow for patching of man pages or building a git release.  This is not
                    425:    required for a release-tar build, since it comes with pre-built man pages.
                    426:    Note that cmarkcfm is faster than commonmark, but they generate the same
                    427:    data.  The commonmark dependency is easiest to install since it's native
                    428:    python, and can even be installed via `pip3 install --user commonmark` if
                    429:    you want to just install it for the build user.
                    430: 
                    431:  - Remove yodl _build_ dependency (if it was even listed before).
                    432: 
                    433: ### DEVELOPER RELATED:
                    434: 
                    435:  - Silenced some annoying warnings about major() & minor() by improving an
                    436:    autoconf include-file check.
                    437: 
                    438:  - Converted the man pages from yodl to markdown. They are now processed via a
                    439:    simple python3 script using the cmarkgfm **or** commonmark library.  This
                    440:    should make it easier to package rsync, since yodl is rather obscure.
                    441: 
                    442:  - Improved some configure checks to work better with strict C99 compilers.
                    443: 
                    444:  - Some perl building/packaging scripts were recoded into awk and python3.
                    445: 
                    446:  - Some defines in byteorder.h were changed into static inline functions that
                    447:    will help to ensure that the args don't get evaluated multiple times on
                    448:    "careful alignment" hosts.
                    449: 
                    450:  - Some code typos were fixed (as pointed out by a Fossies run).
                    451: 
                    452: ------------------------------------------------------------------------------
                    453: <a name="3.1.3"></a>
                    454: 
                    455: # NEWS for rsync 3.1.3 (28 Jan 2018)
                    456: 
                    457: ## Changes in this version:
                    458: 
                    459: ### SECURITY FIXES:
                    460: 
                    461:  - Fixed a buffer overrun in the protocol's handling of xattr names and ensure
                    462:    that the received name is null terminated.
                    463: 
                    464:  - Fix an issue with `--protect-args` where the user could specify the arg in the
                    465:    protected-arg list and short-circuit some of the arg-sanitizing code.
                    466: 
                    467: ### BUG FIXES:
                    468: 
                    469:  - Don't output about a new backup dir without appropriate info verbosity.
                    470: 
                    471:  - Fixed some issues with the sort functions in support/rsyncstats script.
                    472: 
                    473:  - Added a way to specify daemon config lists (e.g. users, groups, etc) that
                    474:    contain spaces (see `auth users` in the latest rsyncd.conf manpage).
                    475: 
                    476:  - If a backup fails (e.g. full disk) rsync exits with an error.
                    477: 
                    478:  - Fixed a problem with a doubled `--fuzzy` option combined with `--link-dest`.
                    479: 
                    480:  - Avoid invalid output in the summary if either the start or end time had an
                    481:    error.
                    482: 
                    483:  - We don't allow a popt alias to affect the `--daemon` or `--server` options.
                    484: 
                    485:  - Fix daemon exclude code to disallow attribute changes in addition to
                    486:    disallowing transfers.
                    487: 
                    488:  - Don't force nanoseconds to match if a non-transferred, non-checksummed file
                    489:    only passed the quick-check w/o comparing nanoseconds.
                    490: 
                    491: ### ENHANCEMENTS:
                    492: 
                    493:  - Added the ability for rsync to compare nanosecond times in its file-check
                    494:    comparisons, and added support nanosecond times on Mac OS X.
                    495: 
                    496:  - Added a short-option (`-@`) for `--modify-window`.
                    497: 
                    498:  - Added the `--checksum-choice=NAME[,NAME]` option to choose the checksum
                    499:    algorithms.
                    500: 
                    501:  - Added hashing of xattr names (with using `-X`) to improve the handling of
                    502:    files with large numbers of xattrs.
                    503: 
                    504:  - Added a way to filter xattr names using include/exclude/filter rules (see
                    505:    the `--xattrs` option in the manpage for details).
                    506: 
                    507:  - Added `daemon chroot|uid|gid` to the daemon config (in addition to the old
                    508:    chroot|uid|gid settings that affect the daemon's transfer process).
                    509: 
                    510:  - Added `syslog tag` to the daemon configuration.
                    511: 
                    512:  - Some manpage improvements.
                    513: 
                    514: ### DEVELOPER RELATED:
                    515: 
                    516:  - Tweak the `make` output when yodl isn't around to create the man pages.
                    517: 
                    518:  - Changed an obsolete autoconf compile macro.
                    519: 
                    520:  - Support newer yodl versions when converting man pages.
                    521: 
                    522: ------------------------------------------------------------------------------
                    523: <a name="3.1.2"></a>
                    524: 
                    525: # NEWS for rsync 3.1.2 (21 Dec 2015)
                    526: 
                    527: ## Changes in this version:
                    528: 
                    529: ### SECURITY FIXES:
                    530: 
                    531:  - Make sure that all transferred files use only path names from inside the
                    532:    transfer. This makes it impossible for a malicious sender to try to make the
                    533:    receiver use an unsafe destination path for a transferred file, such as a
                    534:    just-sent symlink.
                    535: 
                    536: ### BUG FIXES:
                    537: 
                    538:  - Change the checksum seed order in the per-block checksums. This prevents
                    539:    someone from trying to create checksum blocks that match in sum but not
                    540:    content.
                    541: 
                    542:  - Fixed a with the per-dir filter files (using `-FF`) that could trigger an
                    543:    assert failure.
                    544: 
                    545:  - Only skip `set_modtime()` on a transferred file if the time is exactly
                    546:    right.
                    547: 
                    548:  - Don't create an empty backup dir for a transferred file that doesn't exist
                    549:    yet.
                    550: 
                    551:  - Fixed a bug where `--link-dest` and `--xattrs` could cause rsync to exit if
                    552:    a filename had a matching dir of the same name in the alt-dest area.
                    553: 
                    554:  - Allow more than 32 group IDs per user in the daemon's gid=LIST config.
                    555: 
                    556:  - Fix the logging of %b & %c via `--log-file` (daemon logging was already
                    557:    correct, as was `--out-format='%b/%c'`).
                    558: 
                    559:  - Fix erroneous acceptance of `--info=5` & `--debug=5` (an empty flag name is
                    560:    not valid).
                    561: 
                    562: ### ENHANCEMENTS:
                    563: 
                    564:  - Added `(DRY RUN)` info to the `--debug=exit` output line.
                    565: 
                    566:  - Use usleep() for our msleep() function if it is available.
                    567: 
                    568:  - Added a few extra long-option names to rrsync script, which will make
                    569:    BackupPC happier.
                    570: 
                    571:  - Made configure choose to use Linux xattrs on NetBSD (rather than not
                    572:    supporting xattrs).
                    573: 
                    574:  - Added `-wo` (write-only) option to rrsync support script.
                    575: 
                    576:  - Misc. manpage tweaks.
                    577: 
                    578: ### DEVELOPER RELATED:
                    579: 
                    580:  - Fixed a bug with the Makefile's use of `INSTALL_STRIP`.
                    581: 
                    582:  - Improve a test in the suite that could get an erroneous timestamp error.
                    583: 
                    584:  - Tweaks for newer versions of git in the packaging tools.
                    585: 
                    586:  - Improved the m4 generation rules and some autoconf idioms.
                    587: 
                    588: ------------------------------------------------------------------------------
                    589: <a name="3.1.1"></a>
                    590: 
                    591: # NEWS for rsync 3.1.1 (22 Jun 2014)
                    592: 
                    593: ## Changes in this version:
                    594: 
                    595: ### BUG FIXES:
                    596: 
                    597:  - If the receiver gets bogus filenames from the sender (an unexpected leading
                    598:    slash or a `..` infix dir), exit with an error. This prevents a malicious
                    599:    sender from trying to inject filenames that would affect an area outside the
                    600:    destination directories.
                    601: 
                    602:  - Fixed a failure to remove the partial-transfer temp file when interrupted
                    603:    (and rsync is not saving the partial files).
                    604: 
                    605:  - Changed the chown/group/xattr-set order to avoid losing some security-
                    606:    related xattr info (that would get cleared by a chown).
                    607: 
                    608:  - Fixed a bug in the xattr-finding code that could make a non-root-run
                    609:    receiver not able to find some xattr numbers.
                    610: 
                    611:  - Fixed a bug in the early daemon protocol where a timeout failed to be
                    612:    honored (e.g. if the remote side fails to send us the initial protocol
                    613:    greeting).
                    614: 
                    615:  - Fixed unintended inclusion of commas in file numbers in the daemon log.
                    616: 
                    617:  - We once again send the 'f' sub-flag (of `-e`) to the server side so it knows
                    618:    that we can handle incremental-recursion directory errors properly in older
                    619:    protocols.
                    620: 
                    621:  - Fixed an issue with too-aggressive keep-alive messages causing a problem for
                    622:    older rsync versions early in the transfer.
                    623: 
                    624:  - Fixed an incorrect message about backup-directory-creation when using
                    625:    `--dry-run` and the backup dir is not an absolute path.
                    626: 
                    627:  - Fixed a bug where a failed deletion and/or a failed sender-side removal
                    628:    would not affect the exit code.
                    629: 
                    630:  - Fixed a bug that caused a failure when combining `--delete-missing-args`
                    631:    with `--xattrs` and/or `--acls`.
                    632: 
                    633:  - Fixed a strange `dir_depth` assertion error that was caused by empty-dir
                    634:    removals and/or duplicate files in the transfer.
                    635: 
                    636:  - Fixed a problem with `--info=progress2`'s output stats where rsync would
                    637:    only update the stats at the end of each file's transfer. It now uses the
                    638:    data that is flowing for the current file, making the stats more accurate
                    639:    and less jumpy.
                    640: 
                    641:  - Fixed an itemize bug that affected the combo of `--link-dest`, `-X`, and
                    642:    `-n`.
                    643: 
                    644:  - Fixed a problem with delete messages not appearing in the log file when the
                    645:    user didn't use `--verbose`.
                    646: 
                    647:  - Improve chunked xattr reading for OS X.
                    648: 
                    649:  - Removed an attempted hard-link xattr optimization that was causing a
                    650:    transfer failure. This removal is flagged in the compatibility code, so if a
                    651:    better fix can be discovered, we have a way to flip it on again.
                    652: 
                    653:  - Fixed a bug when the receiver is not configured to be able to hard link
                    654:    symlimks/devices/special-file items but the sender sent some of these items
                    655:    flagged as hard-linked.
                    656: 
                    657:  - We now generate a better error if the buffer overflows in `do_mknod()`.
                    658: 
                    659:  - Fixed a problem reading more than 16 ACLs on some OSes.
                    660: 
                    661:  - Fixed the reading of the secrets file to avoid an infinite wait when the
                    662:    username is missing.
                    663: 
                    664:  - Fixed a parsing problem in the `--usermap`/`--groupmap` options when using
                    665:    MIN-MAX numbers.
                    666: 
                    667:  - Switched Cygwin back to using socketpair `pipes` to try to speed it up.
                    668: 
                    669:  - Added knowledge of a few new options to rrsync.
                    670: 
                    671: ### ENHANCEMENTS:
                    672: 
                    673:  - Tweaked the temp-file naming when `--temp-dir=DIR` is used: the temp-file
                    674:    names will not get a '.' prepended.
                    675: 
                    676:  - Added support for a new-compression idiom that does not compress all the
                    677:    matching data in a transfer. This can help rsync to use less cpu when a
                    678:    transfer has a lot of matching data, and also makes rsync compatible with a
                    679:    non-bundled zlib. See the `--new-compress` and `--old-compress` options in
                    680:    the manpage.
                    681: 
                    682:  - Added the support/rsync-no-vanished wrapper script.
                    683: 
                    684:  - Made configure more prominently mention when we failed to find yodl (in case
                    685:    the user wants to be able to generate manpages from `*.yo` files).
                    686: 
                    687:  - Have manpage mention how a daemon's max-verbosity setting affects info and
                    688:    debug options. Also added more clarification on backslash removals for
                    689:    excludes that contain wildcards.
                    690: 
                    691:  - Have configure check if for the attr lib (for getxattr) for those systems
                    692:    that need to link against it explicitly.
                    693: 
                    694:  - Change the early dir-creation logic to only use that idiom in an
                    695:    inc-recursive copy that is preserving directory times. e.g. using
                    696:    `--omit-dir-times` will avoid these early directories being created.
                    697: 
                    698:  - Fix a bug in `cmp_time()` that would return a wrong result if the 2 times
                    699:    differed by an amount greater than what a `time_t` can hold.
                    700: 
                    701: ### DEVELOPER RELATED:
                    702: 
                    703:  - We now include an example systemd file (in packaging/systemd).
                    704: 
                    705:  - Tweaked configure to make sure that any intended use of the included popt
                    706:    and/or zlib code is put early in the CFLAGS.
                    707: 
                    708: ------------------------------------------------------------------------------
                    709: <a name="3.1.0"></a>
                    710: 
                    711: # NEWS for rsync 3.1.0 (28 Sep 2013)
                    712: 
                    713: ## Changes in this version:
                    714: 
                    715: ### PROTOCOL NUMBER:
                    716: 
                    717:  - The protocol number was changed to 31.
                    718: 
                    719: ### OUTPUT CHANGES:
                    720: 
                    721:  - Output numbers in 3-digit groups by default (e.g. 1,234,567). See the
                    722:    `--human-readable` option for a way to turn it off. See also the daemon's
                    723:    `log format` parameter and related command-line options (including
                    724:    `--out-format`) for a modifier that can be used to request digit-grouping or
                    725:    human-readable output in log escapes. (Note that log output is unchanged by
                    726:    default.)
                    727: 
                    728:  - The `--list-only` option is now affected by the `--human-readable` setting.
                    729:    It will display digit groupings by default, and unit suffixes if higher
                    730:    levels of readability are requested. Also, the column width for the size
                    731:    output has increased from 11 to 14 characters when human readability is
                    732:    enabled. Use `--no-h` to get the old-style output and column size.
                    733: 
                    734:  - The output of the `--progress` option has changed: the string `xfer` was
                    735:    shortened to `xfr`, and the string `to-check` was shortened to `to-chk`,
                    736:    both designed to make room for the (by default) wider display of file size
                    737:    numbers without making the total line-length longer. Also, when incremental
                    738:    recursion is enabled, the string `ir-chk` will be used instead of `to-chk`
                    739:    up until the incremental-recursion scan is done, letting you know that the
                    740:    value to check and the total value will still be increasing as new files are
                    741:    found.
                    742: 
                    743:  - Enhanced the `--stats` output: 1) to mention how many files were created
                    744:    (protocol >= 28), 2) to mention how many files were deleted (a new line for
                    745:    protocol 31, but only output when `--delete` is in effect), and 3) to follow
                    746:    the file-count, created-count, and deleted-count with a subcount list that
                    747:    shows the counts by type. The wording of the transferred count has also
                    748:    changed so that it is clearer that it is only a count of regular files.
                    749: 
                    750: ### BUG FIXES:
                    751: 
                    752:  - Fixed a bug in the iconv code when EINVAL or EILSEQ is returned with a full
                    753:    output buffer.
                    754: 
                    755:  - Fixed some rare bugs in `--iconv` processing that might cause a multibyte
                    756:    character to get translated incorrectly.
                    757: 
                    758:  - Fixed a bogus `vanished file` error if some files were specified with `./`
                    759:    prefixes and others were not.
                    760: 
                    761:  - Fixed a bug in `--sparse` where an extra gap could get inserted after a
                    762:    partial write.
                    763: 
                    764:  - Changed the way `--progress` overwrites its prior output in order to make it
                    765:    nearly impossible for the progress to get overwritten by an error.
                    766: 
                    767:  - Improved the propagation of abnormal-exit error messages. This should help
                    768:    the client side to receive errors from the server when it is exiting
                    769:    abnormally, and should also avoid dying with an `connection unexpectedly
                    770:    closed` exit when the closed connection is really expected.
                    771: 
                    772:  - The sender now checks each file it plans to remove to ensure that it hasn't
                    773:    changed from the first stat's info. This helps to avoid losing file data
                    774:    when the user is not using the option in a safe manner.
                    775: 
                    776:  - Fixed a data-duplication bug in the compress option that made compression
                    777:    less efficient. This improves protocol 31 onward, while behaving in a
                    778:    compatible (buggy) manner with older rsync protocols.
                    779: 
                    780:  - When creating a temp-file, rsync is now a bit smarter about it dot-char
                    781:    choices, which can fix a problem on OS X with names that start with `..`.
                    782: 
                    783:  - Rsync now sets a cleanup flag for `--inplace` and `--append` transfers that
                    784:    will flush the write buffer if the transfer aborts. This ensures that more
                    785:    received data gets written out to the disk on an aborted transfer (which is
                    786:    quite helpful on a slow, flaky connection).
                    787: 
                    788:  - The reads that `map_ptr()` now does are aligned on 1K boundaries. This helps
                    789:    some filesystems and/or files that don't like unaligned reads.
                    790: 
                    791:  - Fix an issue in the msleep() function if time jumps backwards.
                    792: 
                    793:  - Fix daemon-server module-name splitting bug where an arg would get split
                    794:    even if `--protect-args` was used.
                    795: 
                    796: ### ENHANCEMENTS:
                    797: 
                    798:  - Added the `--remote-option=OPT` (`-M OPT`) command-line option that is
                    799:    useful for things like sending a remote `--log-file=FILE` or `--fake-super`
                    800:    option.
                    801: 
                    802:  - Added the `--info=FLAGS` and `--debug=FLAGS` options to allow finer-grained
                    803:    control over what is output. Added an extra type of `--progress` output
                    804:    using `--info=progress2`.
                    805: 
                    806:  - The `--msgs2stderr` option can help with debugging rsync by allowing the
                    807:    debug messages to get output to stderr rather than travel via the socket
                    808:    protocol.
                    809: 
                    810:  - Added the `--delete-missing-args` and `--ignore-missing-args` options to
                    811:    either delete or ignore user-specified files on the receiver that are
                    812:    missing on the sender (normally the absence of user-specified files
                    813:    generates an error).
                    814: 
                    815:  - Added a `T` (terabyte) category to the `--human-readable` size suffixes.
                    816: 
                    817:  - Added the `--usermap`/`--groupmap`/`--chown` options for manipulating file
                    818:    ownership during the copy.
                    819: 
                    820:  - Added the `%C` escape to the log-output handling, which will output the MD5
                    821:    checksum of any transferred file, or all files if `--checksum` was specified
                    822:    (when protocol 30 or above is in effect).
                    823: 
                    824:  - Added the `reverse lookup` parameter to the rsync daemon config file to
                    825:    allow reverse-DNS lookups to be disabled.
                    826: 
                    827:  - Added a forward-DNS lookup for the daemon's hosts allow/deny config. Can be
                    828:    disabled via `forward lookup` parameter (defaults to enabled).
                    829: 
                    830:  - Added a way for more than one group to be specified in the daemon's config
                    831:    file, including a way to specify that you want all of the specified user's
                    832:    groups without having to name them. Also changed the daemon to complain
                    833:    about an inability to set explicitly-specified uid/gid values, even when not
                    834:    run by a super-user.
                    835: 
                    836:  - The daemon now tries to send the user the error messages from the pre-xfer
                    837:    exec script when it fails.
                    838: 
                    839:  - Improved the use of alt-dest options into an existing hierarchy of files: If
                    840:    a match is found in an alt-dir, it takes precedence over an existing file.
                    841:    (We'll need to wait for a future version before attribute-changes on
                    842:    otherwise unchanged files are safe when using an existing hierarchy.)
                    843: 
                    844:  - Added per-user authorization options and group-authorization support to the
                    845:    daemon's `auth users` parameter.
                    846: 
                    847:  - Added a way to reference environment variables in a daemon's config file
                    848:    (using %VAR% references).
                    849: 
                    850:  - When replacing a non-dir with a symlink/hard-link/device/special-file, the
                    851:    update should now be done in an atomic manner.
                    852: 
                    853:  - Avoid re-sending xattr info for hard-linked files w/the same xattrs
                    854:    (protocol 31).
                    855: 
                    856:  - The backup code was improved to use better logic maintaining the backup
                    857:    directory hierarchy. Also, when a file is being backed up, rsync tries to
                    858:    hard-link it into place so that the upcoming replacement of the destination
                    859:    file will be atomic (for the normal, non-inplace logic).
                    860: 
                    861:  - Added the ability to synchronize nano-second modified times.
                    862: 
                    863:  - Added a few more default suffixes for the `dont compress` settings.
                    864: 
                    865:  - Added the checking of the `RSYNC_PROTECT_ARGS` environment variable to allow
                    866:    the default for the `--protect-args` command-line option to be overridden.
                    867: 
                    868:  - Added the `--preallocate` command-line option.
                    869: 
                    870:  - Allow `--password-file=-` to read the password from stdin (filename `-`).
                    871: 
                    872:  - Rsync now comes packaged with an rsync-ssl helper script that can be used to
                    873:    contact a remote rsync daemon using a piped-stunnel command.  It also
                    874:    includes an stunnel config file to run the server side to support ssl daemon
                    875:    connections. See the packaging/lsb/rsync.spec file for one way to package
                    876:    the resulting files. (Suggestions for how to make this even easier to
                    877:    install & use are welcomed.)
                    878: 
                    879:  - Improved the speed of some `--inplace` updates when there are lots of
                    880:    identical checksum blocks that end up being unusable.
                    881: 
                    882:  - Added the `--outbuf=N|L|B` option for choosing the output buffering.
                    883: 
                    884:  - Repeating the `--fuzzy` option now causes the code to look for fuzzy matches
                    885:    inside alt-dest directories too.
                    886: 
                    887:  - The `--chmod` option now supports numeric modes, e.g. `--chmod=644,D755`
                    888: 
                    889:  - Added some Solaris xattr code.
                    890: 
                    891:  - Made an rsync daemon (the listening process) exit with a 0 status when it
                    892:    was signaled to die. This helps launchd.
                    893: 
                    894:  - Improved the `RSYNC_*` environment variables for the pre-xfer exec script:
                    895:    when a daemon is sent multiple request args, they are now joined into a
                    896:    single return value (separated by spaces) so that the `RSYNC_REQUEST`
                    897:    environment variable is accurate for any `pre-xfer exec`. The values in
                    898:    `RSYNC_ARG#` vars are no longer truncated at the `.` arg (prior to the
                    899:    request dirs/files), so that all the requested values are also listed
                    900:    (separately) in `RSYNC_ARG#` variables.
                    901: 
                    902: ### EXTRAS:
                    903: 
                    904:  - Added an `instant-rsyncd` script to the support directory, which makes it
                    905:    easy to configure a simple rsync daemon in the current directory.
                    906: 
                    907:  - Added the `mapfrom` and `mapto` scripts to the support directory, which
                    908:    makes it easier to do user/group mapping in a local transfer based on
                    909:    passwd/group files from another machine.
                    910: 
                    911:  - There's a new, improved version of the lsh script in the support dir: it's
                    912:    written in perl and supports `-u` without resorting to using sudo (when run
                    913:    as root). The old shell version is now named lsh.sh.
                    914: 
                    915:  - There is a helper script named rsync-slash-strip in the support directory
                    916:    for anyone that wants to change the way rsync handles args with trailing
                    917:    slashes. (e.g. arg/ would get stripped to arg while arg/. would turn into
                    918:    arg/).
                    919: 
                    920: ### INTERNAL:
                    921: 
                    922:  - The I/O code was rewritten to be simpler and do bigger buffered reads over
                    923:    the socket. The I/O between the receiver and the generator was changed to be
                    924:    standard multiplexed-I/O (like that over the socket).
                    925: 
                    926:  - The sender tries to use any dead time while the generator is looking for
                    927:    files to transfer in order to do sender-side directory scanning in a more
                    928:    parallel manner.
                    929: 
                    930:  - A daemon can now inform a client about a daemon-configured timeout value so
                    931:    that the client can assist in the keep-alive activity (protocol 31).
                    932: 
                    933:  - The filter code received some refactoring to make it more extendable, to
                    934:    read better, and do better sanity checking.
                    935: 
                    936:  - Really big numbers are now output using our own big-num routine rather than
                    937:    casting them to a double and using a %.0f conversion.
                    938: 
                    939:  - The `pool_alloc` library has received some minor improvements in alignment
                    940:    handling.
                    941: 
                    942:  - Added `init_stat_x()` function to avoid duplication of acl/xattr init code.
                    943: 
                    944:  - The included zlib was upgraded from 1.2.3 to 1.2.8.
                    945: 
                    946:  - Rsync can now be compiled to use an unmodified zlib library instead of the
                    947:    tweaked one that is included with rsync. This will eventually become the
                    948:    default, at which point we'll start the countdown to removing the included
                    949:    zlib. Until then, feel free to configure using:
                    950: 
                    951:    ./configure `--with-included-zlib=no`
                    952: 
                    953: ### DEVELOPER RELATED:
                    954: 
                    955:  - Added more conditional debug output.
                    956: 
                    957:  - Fixed some build issues for Android and Minix.
                    958: 
                    959: ------------------------------------------------------------------------------
                    960: <a name="3.0.9"></a>
                    961: 
                    962: # NEWS for rsync 3.0.9 (23 Sep 2011)
                    963: 
                    964: ## Changes in this version:
                    965: 
                    966: ### BUG FIXES:
                    967: 
                    968:  - Fix a crash bug in checksum scanning when `--inplace` is used.
                    969: 
                    970:  - Fix a hang if a hard-linked file cannot be opened by the sender (e.g.  if it
                    971:    has no read permission).
                    972: 
                    973:  - Fix preservation of a symlink's system xattrs (e.g. selinux) on Linux.
                    974: 
                    975:  - Fix a memory leak in the xattr code.
                    976: 
                    977:  - Fixed a bug with `--delete-excluded` when a filter merge file has a rule
                    978:    that specifies a receiver-only side restriction.
                    979: 
                    980:  - Fix a bug with the modifying of unwritable directories.
                    981: 
                    982:  - Fix `--fake-super`'s interaction with `--link-dest` same-file comparisons.
                    983: 
                    984:  - Fix the updating of the `curr_dir` buffer to avoid a duplicate slash.
                    985: 
                    986:  - Fix the directory permissions on an implied dot-dir when using `--relative`
                    987:    (e.g. /outside/path/././send/path).
                    988: 
                    989:  - Fixed some too-long sleeping instances when using `--bwlimit`.
                    990: 
                    991:  - Fixed when symlink ownership difference-checking gets compiled into
                    992:    `unchanged_attrs()`.
                    993: 
                    994:  - Improved the socket-error reporting when multiple protocols fail.
                    995: 
                    996:  - Fixed a case where a socket error could reference just-freed memory.
                    997: 
                    998:  - Failing to use a password file that was specified on the command-line is now
                    999:    a fatal error.
                   1000: 
                   1001:  - Fix the non-root updating of directories that don't have the read and/or
                   1002:    execute permission.
                   1003: 
                   1004:  - Make daemon-excluded file errors more error-like.
                   1005: 
                   1006:  - Fix a compilation issue on older C compilers (due to a misplaced var
                   1007:    declaration).
                   1008: 
                   1009:  - Make configure avoid finding socketpair on Cygwin.
                   1010: 
                   1011:  - Avoid trying to reference `SO_BROADCAST` if the OS doesn't support it.
                   1012: 
                   1013:  - Fix some issues with the post-processing of the man pages.
                   1014: 
                   1015:  - Fixed the user home-dir handling in the support/lsh script.
                   1016: 
                   1017:  - Some minor manpage improvements.
                   1018: 
                   1019: ------------------------------------------------------------------------------
                   1020: <a name="3.0.8"></a>
                   1021: 
                   1022: # NEWS for rsync 3.0.8 (26 Mar 2011)
                   1023: 
                   1024: ## Changes in this version:
                   1025: 
                   1026: ### BUG FIXES:
                   1027: 
                   1028:  - Fixed two buffer-overflow issues: one where a directory path that is exactly
                   1029:    MAXPATHLEN was not handled correctly, and one handling a `--backup-dir` that
                   1030:    is extra extra large.
                   1031: 
                   1032:  - Fixed a data-corruption issue when preserving hard-links without preserving
                   1033:    file ownership, and doing deletions either before or during the transfer
                   1034:    (CVE-2011-1097). This fixes some assert errors in the hard-linking code, and
                   1035:    some potential failed checksums (via `-c`) that should have matched.
                   1036: 
                   1037:  - Fixed a potential crash when an rsync daemon has a filter/exclude list and
                   1038:    the transfer is using ACLs or xattrs.
                   1039: 
                   1040:  - Fixed a hang if a really large file is being processed by an rsync that
                   1041:    can't handle 64-bit numbers. Rsync will now complain about the file being
                   1042:    too big and skip it.
                   1043: 
                   1044:  - For devices and special files, we now avoid gathering useless ACL and/or
                   1045:    xattr information for files that aren't being copied. (The un-copied files
                   1046:    are still put into the file list, but there's no need to gather data that is
                   1047:    not going to be used.) This ensures that if the user uses `--no-D`, that
                   1048:    rsync can't possibly complain about being unable to gather extended
                   1049:    information from special files that are in the file list (but not in the
                   1050:    transfer).
                   1051: 
                   1052:  - Properly handle requesting remote filenames that start with a dash. This
                   1053:    avoids a potential error where a filename could be interpreted as a (usually
                   1054:    invalid) option.
                   1055: 
                   1056:  - Fixed a bug in the comparing of upper-case letters in file suffixes for
                   1057:    `--skip-compress`.
                   1058: 
                   1059:  - If an rsync daemon has a module configured without a path setting, rsync
                   1060:    will now disallow access to that module.
                   1061: 
                   1062:  - If the destination arg is an empty string, it will be treated as a reference
                   1063:    to the current directory (as 2.x used to do).
                   1064: 
                   1065:  - If rsync was compiled with a newer time-setting function (such as lutimes),
                   1066:    rsync will fall-back to an older function (such as utimes) on a system where
                   1067:    the newer function is not around. This helps to make the rsync binary more
                   1068:    portable in mixed-OS-release situations.
                   1069: 
                   1070:  - Fixed a batch-file writing bug that would not write out the full set of
                   1071:    compatibility flags that the transfer was using. This fixes a potential
                   1072:    protocol problem for a batch file that contains a sender-side I/O error: it
                   1073:    would have been sent in a way that the batch-reader wasn't expecting.
                   1074: 
                   1075:  - Some improvements to the hard-linking code to ensure that device-number
                   1076:    hashing is working right, and to supply more information if the hard-link
                   1077:    code fails.
                   1078: 
                   1079:  - The `--inplace` code was improved to not search for an impossible checksum
                   1080:    position. The quadruple-verbose chunk[N] message will now mention when an
                   1081:    inplace chunk was handled by a seek rather than a read+write.
                   1082: 
                   1083:  - Improved ACL mask handling, e.g. for Solaris.
                   1084: 
                   1085:  - Fixed a bug that prevented `--numeric-ids` from disabling the translation of
                   1086:    user/group IDs for ACLs.
                   1087: 
                   1088:  - Fixed an issue where an xattr and/or ACL transfer that used an alt-dest
                   1089:    option (e.g. `--link-dest`) could output an error trying to itemize the
                   1090:    changes against the alt-dest directory's xattr/ACL info but was instead
                   1091:    trying to access the not-yet-existing new destination directory.
                   1092: 
                   1093:  - Improved xattr system-error messages to mention the full path to the file.
                   1094: 
                   1095:  - The `--link-dest` checking for identical symlinks now avoids considering
                   1096:    attribute differences that cannot be changed on the receiver.
                   1097: 
                   1098:  - Avoid trying to read/write xattrs on certain file types for certain OSes.
                   1099:    Improved configure to set `NO_SYMLINK_XATTRS`, `NO_DEVICE_XATTRS`, and/or
                   1100:    `NO_SPECIAL_XATTRS` defines in config.h.
                   1101: 
                   1102:  - Improved the unsafe-symlink errors messages.
                   1103: 
                   1104:  - Fixed a bug setting xattrs on new files that aren't user writable.
                   1105: 
                   1106:  - Avoid re-setting xattrs on a hard-linked file w/the same xattrs.
                   1107: 
                   1108:  - Fixed a bug with `--fake-super` when copying files and dirs that aren't user
                   1109:    writable.
                   1110: 
                   1111:  - Fixed a bug where a sparse file could have its last sparse block turned into
                   1112:    a real block when rsync sets the file size (requires ftruncate).
                   1113: 
                   1114:  - If a temp-file name is too long, rsync now avoids truncating the name in the
                   1115:    middle of adjacent high-bit characters. This prevents a potential filename
                   1116:    error if the filesystem doesn't allow a name to contain an invalid
                   1117:    multi-byte sequence.
                   1118: 
                   1119:  - If a muli-protocol socket connection fails (i.e., when contacting a daemon),
                   1120:    we now report all the failures, not just the last one. This avoids losing a
                   1121:    relevant error (e.g. an IPv4 connection-refused error) that happened before
                   1122:    the final error (e.g. an IPv6 protocol-not-supported error).
                   1123: 
                   1124:  - Generate a transfer error if we try to call chown with a `-1` for a uid or a
                   1125:    gid (which is not settable).
                   1126: 
                   1127:  - Fixed the working of `--force` when used with `--one-file-system`.
                   1128: 
                   1129:  - Fix the popt arg parsing so that an option that doesn't take an arg will
                   1130:    reject an attempt to supply one (can configure `--with-included-popt` if
                   1131:    your system's popt library doesn't yet have this fix).
                   1132: 
                   1133:  - A couple minor option tweaks to the support/rrsync script, and also some
                   1134:    regex changes that make vim highlighting happier.
                   1135: 
                   1136:  - Fixed some issues in the support/mnt-excl script.
                   1137: 
                   1138:  - Various manpage improvements.
                   1139: 
                   1140: ### ENHANCEMENTS:
                   1141: 
                   1142:  - Added `.hg/` to the default cvs excludes (see `-C` & `--cvs-exclude`).
                   1143: 
                   1144: ### DEVELOPER RELATED:
                   1145: 
                   1146:  - Use lchmod() whenever it is available (not just on symlinks).
                   1147: 
                   1148:  - A couple fixes to the `socketpair_tcp()` routine.
                   1149: 
                   1150:  - Updated the helper scripts in the packaging subdirectory.
                   1151: 
                   1152:  - Renamed configure.in to configure.ac.
                   1153: 
                   1154:  - Fixed configure's checking for iconv routines for newer OS X versions.
                   1155: 
                   1156:  - Fixed the testsuite/xattrs.test script on OS X.
                   1157: 
                   1158: ------------------------------------------------------------------------------
                   1159: <a name="3.0.7"></a>
                   1160: 
                   1161: # NEWS for rsync 3.0.7 (31 Dec 2009)
                   1162: 
                   1163: ## Changes in this version:
                   1164: 
                   1165: ### BUG FIXES:
                   1166: 
                   1167:  - Fixed a bogus free when using `--xattrs` with `--backup`.
                   1168: 
                   1169:  - Avoid an error when `--dry-run` was trying to stat a prior hard-link file
                   1170:    that hasn't really been created.
                   1171: 
                   1172:  - Fixed a problem with `--compress` (`-z`) where the receiving side could
                   1173:    return the error "inflate (token) returned -5".
                   1174: 
                   1175:  - Fixed a bug where `--delete-during` could delete in a directory before it
                   1176:    noticed that the sending side sent an I/O error for that directory (both
                   1177:    sides of the transfer must be at least 3.0.7).
                   1178: 
                   1179:  - Improved `--skip-compress`'s error handling of bad character-sets and got
                   1180:    rid of a lingering debug fprintf().
                   1181: 
                   1182:  - Fixed the daemon's conveyance of `io_error` value from the sender.
                   1183: 
                   1184:  - An rsync daemon use seteuid() (when available) if it used setuid().
                   1185: 
                   1186:  - Get the permissions right on a `--fake-super` transferred directory that
                   1187:    needs more owner permissions to emulate root behavior.
                   1188: 
                   1189:  - An absolute-path filter rule (i.e. with a '/' modifier) no longer loses its
                   1190:    modifier when sending the filter rules to the remote rsync.
                   1191: 
                   1192:  - Improved the "--delete does not work without -r or -d" message.
                   1193: 
                   1194:  - Improved rsync's handling of `--timeout` to avoid a weird timeout case where
                   1195:    the sender could timeout even though it has recently written data to the
                   1196:    socket (but hasn't read data recently, due to the writing).
                   1197: 
                   1198:  - Some misc manpage improvements.
                   1199: 
                   1200:  - Fixed the chmod-temp-dir testsuite on a system without /var/tmp.
                   1201: 
                   1202:  - Make sure that a timeout specified in the daemon's config is used as a
                   1203:    maximum timeout value when the user also specifies a timeout.
                   1204: 
                   1205:  - Improved the error-exit reporting when rsync gets an error trying to cleanup
                   1206:    after an error: the initial error is reported.
                   1207: 
                   1208:  - Improved configure's detection of IPv6 for Solaris and Cygwin.
                   1209: 
                   1210:  - The AIX sysacls routines will now return ENOSYS if ENOTSUP is missing.
                   1211: 
                   1212:  - Made our (only used if missing) getaddrinfo() routine use `inet_pton()`
                   1213:    (which we also provide) instead of `inet_aton()`.
                   1214: 
                   1215:  - The exit-related debug messages now mention the program's role so it is
                   1216:    clear who output what message.
                   1217: 
                   1218: ### DEVELOPER RELATED:
                   1219: 
                   1220:  - Got rid of type-punned compiler warnings output by newer gcc versions.
                   1221: 
                   1222:  - The Makefile now ensures that proto.h will be rebuilt if config.h changes.
                   1223: 
                   1224:  - The testsuite no longer uses `id -u`, so it works better on Solaris.
                   1225: 
                   1226: ------------------------------------------------------------------------------
                   1227: <a name="3.0.6"></a>
                   1228: 
                   1229: # NEWS for rsync 3.0.6 (8 May 2009)
                   1230: 
                   1231: ## Changes in this version:
                   1232: 
                   1233: ### BUG FIXES:
                   1234: 
                   1235:  - Fixed a `--read-batch` hang when rsync is reading a batch file that was
                   1236:    created from an incremental-recursion transfer.
                   1237: 
                   1238:  - Fixed the daemon's socket code to handle the simultaneous arrival of
                   1239:    multiple connections.
                   1240: 
                   1241:  - Fix `--safe-links`/`--copy-unsafe-links` to properly handle symlinks that
                   1242:    have consecutive slashes in the value.
                   1243: 
                   1244:  - Fixed the parsing of an `[IPv6_LITERAL_ADDR]` when a USER@ is prefixed.
                   1245: 
                   1246:  - The sender now skips a (bogus) symlink that has a 0-length value, which
                   1247:    avoids a transfer error in the receiver.
                   1248: 
                   1249:  - Fixed a case where the sender could die with a tag-0 error if there was an
                   1250:    I/O during the sending of the file list.
                   1251: 
                   1252:  - Fixed the rrsync script to avoid a server-side problem when `-e` is at the
                   1253:    start of the short options.
                   1254: 
                   1255:  - Fixed a problem where a vanished directory could turn into an exit code 23
                   1256:    instead of the proper exit code 24.
                   1257: 
                   1258:  - Fixed the `--iconv` conversion of symlinks when doing a local copy.
                   1259: 
                   1260:  - Fixed a problem where `--one-file-system` was not stopping deletions on the
                   1261:    receiving side when a mount-point directory did not match a directory in the
                   1262:    transfer.
                   1263: 
                   1264:  - Fixed the dropping of an ACL mask when no named ACL values were present.
                   1265: 
                   1266:  - Fixed an ACL/xattr corruption issue where the `--backup` option could cause
                   1267:    rsync to associate the wrong ACL/xattr information with received files.
                   1268: 
                   1269:  - Fixed the use of `--xattrs` with `--only-write-batch`.
                   1270: 
                   1271:  - Fixed the use of `--dry-run` with `--read-batch`.
                   1272: 
                   1273:  - Fixed configure's erroneous use of target.
                   1274: 
                   1275:  - Fixed configure's `--disable-debug` option.
                   1276: 
                   1277:  - Fixed a run-time issue for systems that can't find `iconv_open()` by adding
                   1278:    the `--disable-iconv-open` configure option.
                   1279: 
                   1280:  - Complain and die if the user tries to combine `--remove-source-files` (or
                   1281:    the deprecated `--remove-sent-files`) with `--read-batch`.
                   1282: 
                   1283:  - Fixed an failure transferring special files from Solaris to Linux.
                   1284: 
                   1285: ------------------------------------------------------------------------------
                   1286: <a name="3.0.5"></a>
                   1287: 
                   1288: # NEWS for rsync 3.0.5 (28 Dec 2008)
                   1289: 
                   1290: ## Changes in this version:
                   1291: 
                   1292: ### BUG FIXES:
                   1293: 
                   1294:  - Initialize xattr data in a couple spots in the hlink code, which avoids a
                   1295:    crash when the xattr pointer's memory happens to start out non-zero.  Also
                   1296:    fixed the itemizing of an alt-dest file's xattrs when hard-linking.
                   1297: 
                   1298:  - Don't send a bogus `-` option to an older server if there were no short
                   1299:    options specified.
                   1300: 
                   1301:  - Fixed skipping of unneeded updates in a batch file when incremental
                   1302:    recursion is active. Added a test for this. Made batch-mode handle `redo`
                   1303:    files properly (and without hanging).
                   1304: 
                   1305:  - Fix the %P logfile escape when the daemon logs from inside a chroot.
                   1306: 
                   1307:  - Fixed the use of `-s` (`--protect-args`) when used with a remote source or
                   1308:    destination that had an empty path (e.g. `host:`). Also fixed a problem when
                   1309:    `-s` was used when accessing a daemon via a remote-shell.
                   1310: 
                   1311:  - Fixed the use of a dot-dir path (e.g. foo/./bar) inside a `--files-from`
                   1312:    file when the root of the transfer isn't the current directory.
                   1313: 
                   1314:  - Fixed a bug with `-K --delete` removing symlinks to directories when
                   1315:    incremental recursion is active.
                   1316: 
                   1317:  - Fixed a hard to trigger hang when using `--remove-source-files`.
                   1318: 
                   1319:  - Got rid of an annoying delay when accessing a daemon via a remote-shell.
                   1320: 
                   1321:  - Properly ignore (superfluous) source args on a `--read-batch` command.
                   1322: 
                   1323:  - Improved the manpage's description of the `*` wildcard to remove the
                   1324:    confusing `non-empty` qualifier.
                   1325: 
                   1326:  - Fixed reverse lookups in the compatibility-library version of getnameinfo().
                   1327: 
                   1328:  - Fixed a bug when using `--sparse` on a sparse file that has over 2GB of
                   1329:    consecutive sparse data.
                   1330: 
                   1331:  - Avoid a hang when using at least 3 `--verbose` options on a transfer with a
                   1332:    client sender (which includes local copying).
                   1333: 
                   1334:  - Fixed a problem with `--delete-delay` reporting an error when it was ready
                   1335:    to remove a directory that was now gone.
                   1336: 
                   1337:  - Got rid of a bunch of `warn_unused_result` compiler warnings.
                   1338: 
                   1339:  - If an ftruncate() on a received file fails, it now causes a partial-
                   1340:    transfer warning.
                   1341: 
                   1342:  - Allow a path with a leading `//` to be preserved (CYGWIN only).
                   1343: 
                   1344: ### ENHANCEMENTS:
                   1345: 
                   1346:  - Made the support/atomic-rsync script able to perform a fully atomic update
                   1347:    of the copied hierarchy when the destination is setup using a particular
                   1348:    symlink idiom.
                   1349: 
                   1350: ------------------------------------------------------------------------------
                   1351: <a name="3.0.4"></a>
                   1352: 
                   1353: # NEWS for rsync 3.0.4 (6 Sep 2008)
                   1354: 
                   1355: ## Changes in this version:
                   1356: 
                   1357: ### BUG FIXES:
                   1358: 
                   1359:  - Fixed a bug in the hard-linking code where it would sometimes try to
                   1360:    allocate 0 bytes of memory (which fails on some OSes, such as AIX).
                   1361: 
                   1362:  - Fixed the hard-linking of files from a device that has a device number of 0
                   1363:    (which seems to be a common device number on NetBSD).
                   1364: 
                   1365:  - Fixed the handling of a `--partial-dir` that cannot be created. This
                   1366:    particularly impacts the `--delay-updates` option (since the files cannot be
                   1367:    delayed without a partial-dir), and was potentially destructive if the
                   1368:    `--remove-source-files` was also specified.
                   1369: 
                   1370:  - Fixed a couple issues in the `--fake-super` handling of xattrs when the
                   1371:    destination files have root-level attributes (e.g. selinux values) that a
                   1372:    non-root copy can't affect.
                   1373: 
                   1374:  - Improved the keep-alive check in the generator to fire consistently in
                   1375:    incremental-recursion mode when `--timeout` is enabled.
                   1376: 
                   1377:  - The `--iconv` option now converts the content of a symlink too, instead of
                   1378:    leaving it in the wrong character-set (requires 3.0.4 on both sides of the
                   1379:    transfer).
                   1380: 
                   1381:  - When using `--iconv`, if a filename fails to convert on the receiving side,
                   1382:    this no longer makes deletions in the root-dir of the transfer fail silently
                   1383:    (the user now gets a warning about deletions being disabled due to IO error
                   1384:    as long as `--ignore-errors` was not specified).
                   1385: 
                   1386:  - When using `--iconv`, if a server-side receiver can't convert a filename,
                   1387:    the error message sent back to the client no longer mangles the name with
                   1388:    the wrong charset conversion.
                   1389: 
                   1390:  - Fixed a potential alignment issue in the IRIX ACL code when allocating the
                   1391:    initial `struct acl` object. Also, cast mallocs to avoid warnings.
                   1392: 
                   1393:  - Changed some errors that were going to stdout to go to stderr.
                   1394: 
                   1395:  - Made `human_num()` and `human_dnum()` able to output a negative number
                   1396:    (rather than outputting a cryptic string of punctuation).
                   1397: 
                   1398: ### ENHANCEMENTS:
                   1399: 
                   1400:  - Rsync will avoid sending an `-e` option to the server if an older protocol
                   1401:    is requested (and thus the option would not be useful). This lets the user
                   1402:    specify the `--protocol=29` option to access an overly-restrictive server
                   1403:    that is rejecting the protocol-30 use of `-e` to the server.
                   1404: 
                   1405:  - Improved the message output for an `RERR_PARTIAL` exit.
                   1406: 
                   1407: ### DEVELOPER RELATED:
                   1408: 
                   1409:  - The Makefile will not halt for just a timestamp change on the Makefile or
                   1410:    the configure files, only for actual changes in content.
                   1411: 
                   1412:  - Changed some commands in the testsuite's xattrs.test that called `rsync`
                   1413:    instead of `$RSYNC`.
                   1414: 
                   1415:  - Enhanced the release scripts to be able to handle a branch release and to do
                   1416:    even more consistency checks on the files.
                   1417: 
                   1418: ------------------------------------------------------------------------------
                   1419: <a name="3.0.3"></a>
                   1420: 
                   1421: # NEWS for rsync 3.0.3 (29 Jun 2008)
                   1422: 
                   1423: ## Changes in this version:
                   1424: 
                   1425: ### BUG FIXES:
                   1426: 
                   1427:  - Fixed a wildcard matching problem in the daemon when a module has `use
                   1428:    chroot` enabled.
                   1429: 
                   1430:  - Fixed a crash bug in the hard-link code.
                   1431: 
                   1432:  - Fixed the sending of xattr directory information when the code finds a
                   1433:    `--link-dest` or `--copy-dest` directory with unchanged xattrs -- the
                   1434:    destination directory now gets these unchanged xattrs properly applied.
                   1435: 
                   1436:  - Fixed an xattr-sending glitch that could cause an `Internal abbrev` error.
                   1437: 
                   1438:  - Fixed the combination of `--xattrs` and `--backup`.
                   1439: 
                   1440:  - The generator no longer allows a '.' dir to be excluded by a daemon-exclude
                   1441:    rule.
                   1442: 
                   1443:  - Fixed deletion handling when copying a single, empty directory (with no
                   1444:    files) to a differently named, non-existent directory.
                   1445: 
                   1446:  - Fixed the conversion of spaces into dashes in the %M log escape.
                   1447: 
                   1448:  - Fixed several places in the code that were not returning the right errno
                   1449:    when a function failed.
                   1450: 
                   1451:  - Fixed the backing up of a device or special file into a backup dir.
                   1452: 
                   1453:  - Moved the setting of the socket options prior to the connect().
                   1454: 
                   1455:  - If rsync exits in the middle of a `--progress` output, it now outputs a
                   1456:    newline to help prevent the progress line from being overwritten.
                   1457: 
                   1458:  - Fixed a problem with how a destination path with a trailing slash or a
                   1459:    trailing dot-dir was compared against the daemon excludes.
                   1460: 
                   1461:  - Fixed the sending of large (size > 16GB) files when talking to an older
                   1462:    rsync (protocols < 30): we now use a compatible block size limit.
                   1463: 
                   1464:  - If a file's length is so huge that we overflow a checksum buffer count (i.e.
                   1465:    several hundred TB), warn the user and avoid sending an invalid checksum
                   1466:    struct over the wire.
                   1467: 
                   1468:  - If a source arg is excluded, `--relative` no longer adds the excluded arg's
                   1469:    implied dirs to the transfer. This fix also made the exclude check happen in
                   1470:    the better place in the sending code.
                   1471: 
                   1472:  - Use the `overflow_exit()` function for overflows, not `out_of_memory()`.
                   1473: 
                   1474:  - Improved the code to better handle a system that has only 32-bit file
                   1475:    offsets.
                   1476: 
                   1477: ### ENHANCEMENTS:
                   1478: 
                   1479:  - The rsyncd.conf manpage now consistently refers to the parameters in the
                   1480:    daemon config file as `parameters`.
                   1481: 
                   1482:  - The description of the `--inplace` option was improved.
                   1483: 
                   1484: ### EXTRAS:
                   1485: 
                   1486:  - Added a new script in the support directory, deny-rsync, which allows an
                   1487:    admin to (temporarily) replace the rsync command with a script that sends an
                   1488:    error message to the remote client via the rsync protocol.
                   1489: 
                   1490: ### DEVELOPER RELATED:
                   1491: 
                   1492:  - Fixed a testcase failure if the tests are run as root and made some
                   1493:    compatibility improvements.
                   1494: 
                   1495:  - Improved the daemon tests, including checking module comments, the listing
                   1496:    of files, and the ensuring that daemon excludes can't affect a dot-dir arg.
                   1497: 
                   1498:  - Improved some build rules for those that build in a separate directory from
                   1499:    the source, including better install rules for the man pages, and the fixing
                   1500:    of a proto.h-tstamp rule that could make the binaries get rebuild without
                   1501:    cause.
                   1502: 
                   1503:  - Improved the testsuite to work around a problem with some utilities (e.g. cp
                   1504:    -p & touch -r) rounding sub-second timestamps.
                   1505: 
                   1506:  - Ensure that the early patches don't cause any generated-file hunks to
                   1507:    bleed-over into patches that follow.
                   1508: 
                   1509: ------------------------------------------------------------------------------
                   1510: <a name="3.0.2"></a>
                   1511: 
                   1512: # NEWS for rsync 3.0.2 (8 Apr 2008)
                   1513: 
                   1514: ## Changes in this version:
                   1515: 
                   1516: ### BUG FIXES:
                   1517: 
                   1518:  - Fixed a potential buffer overflow in the xattr code.
                   1519: 
                   1520: ### ENHANCEMENTS:
                   1521: 
                   1522:  - None.
                   1523: 
                   1524: ### DEVELOPER RELATED:
                   1525: 
                   1526:  - The RPM spec file was improved to install more useful files.
                   1527: 
                   1528:  - A few developer-oriented scripts were moved from the support dir to the
                   1529:    packaging dir.
                   1530: 
                   1531: ------------------------------------------------------------------------------
                   1532: <a name="3.0.1"></a>
                   1533: 
                   1534: # NEWS for rsync 3.0.1 (3 Apr 2008)
                   1535: 
                   1536: ## Changes in this version:
                   1537: 
                   1538: ### NOTABLE CHANGES IN BEHAVIOR:
                   1539: 
                   1540:  - Added the 'c'-flag to the itemizing of non-regular files so that the
                   1541:    itemized output doesn't get hidden if there were no attribute changes, and
                   1542:    also so that the itemizing of a `--copy-links` run will distinguish between
                   1543:    copying an identical non-regular file and the creation of a revised version
                   1544:    with a new value (e.g. a changed symlink referent, a new device number,
                   1545:    etc.).
                   1546: 
                   1547: ### BUG FIXES:
                   1548: 
                   1549:  - Fixed a crash bug when a single-use rsync daemon (via remote shell) was run
                   1550:    without specifying a `--config=FILE` option.
                   1551: 
                   1552:  - Fixed a crash when backing up a directory that has a default ACL.
                   1553: 
                   1554:  - Fixed a bug in the handling of xattr values that could cause rsync to not
                   1555:    think that a file's extended attributes are up-to-date.
                   1556: 
                   1557:  - Fixed the working of `--fake-super` with `--link-dest` and `--xattrs`.
                   1558: 
                   1559:  - Fixed a hang when combining `--dry-run` with `--remove-source-files`.
                   1560: 
                   1561:  - Fixed a bug with `--iconv`'s handling of files that cannot be converted: a
                   1562:    failed name can no longer cause a transfer failure.
                   1563: 
                   1564:  - Fixed the building of the rounding.h file on systems that need custom
                   1565:    CPPFLAGS to be used. Also improved the error reporting if the building of
                   1566:    rounding.h fails.
                   1567: 
                   1568:  - Fixed the use of the `--protect-args` (`-s`) option when talking to a
                   1569:    daemon.
                   1570: 
                   1571:  - Fixed the `--ignore-existing` option's protection of files on the receiver
                   1572:    that are non-regular files on the sender (e.g. if a symlink or a dir on the
                   1573:    sender is trying to replace a file on the receiver). The reverse protection
                   1574:    (protecting a dir/symlink/device from being replaced by a file) was already
                   1575:    working.
                   1576: 
                   1577:  - Fixed an assert failure if `--hard-links` is combined with an option that
                   1578:    can skip a file in a set of hard-linked files (i.e. `--ignore-existing`,
                   1579:    `--append`, etc.), without skipping all the files in the set.
                   1580: 
                   1581:  - Avoid setting the modify time on a directory that already has the right
                   1582:    modify time set. This avoids tweaking the dir's ctime.
                   1583: 
                   1584:  - Improved the daemon-exclude handling to do a better job of applying the
                   1585:    exclude rules to path entries. It also sends the user an error just as if
                   1586:    the files were actually missing (instead of silently ignoring the user's
                   1587:    args), and avoids sending the user the filter-action messages for these
                   1588:    non-user-initiated rules.
                   1589: 
                   1590:  - Fixed some glitches with the dry-run code's missing-directory handling,
                   1591:    including a problem when combined with `--fuzzy`.
                   1592: 
                   1593:  - Fixed some glitches with the skipped-directory handling.
                   1594: 
                   1595:  - Fixed the 'T'-flag itemizing of symlinks when `--time` isn't preserved.
                   1596: 
                   1597:  - Fixed a glitch in the itemizing of permissions with the `-E` option.
                   1598: 
                   1599:  - The `--append` option's restricting of transfers to those that add data no
                   1600:    longer prevents the updating of non-content changes to otherwise up-to-date
                   1601:    files (i.e. those with the same content but differing permissions,
                   1602:    ownership, xattrs, etc.).
                   1603: 
                   1604:  - Don't allow `--fake-super` to be specified with `-XX` (double `--xattrs`)
                   1605:    because the options conflict. If a daemon has `fake super` enabled, it
                   1606:    automatically downgrades a `-XX` request to `-X`.
                   1607: 
                   1608:  - Fixed a couple bugs in the parsing of daemon-config excludes that could make
                   1609:    a floating exclude rule get treated as matching an absolute path.
                   1610: 
                   1611:  - A daemon doesn't try to auto-refuse the `iconv` option if iconv-support
                   1612:    wasn't compiled in to the daemon (avoiding a warning in the logs).
                   1613: 
                   1614:  - Fixed the inclusion of per-dir merge files from implied dirs.
                   1615: 
                   1616:  - Fixed the support/rrsync script to work with the latest options that rsync
                   1617:    sends (including its flag-specifying use of `-e` to the server).
                   1618: 
                   1619: ### ENHANCEMENTS:
                   1620: 
                   1621:  - Added the `--old-dirs` (`--old-d`) option to make it easier for a user to
                   1622:    ask for file-listings with older rsync versions (this is easier than having
                   1623:    to type `-r --exclude='/*/*'` manually).
                   1624: 
                   1625:  - When getting an error while asking an older rsync daemon for a file listing,
                   1626:    rsync will try to notice if the error is a rejection of the `--dirs` (`-d`)
                   1627:    option and let the user know how to work around the issue.
                   1628: 
                   1629:  - Added a few more `--no-OPTION` overrides.
                   1630: 
                   1631:  - Improved the documentation of the `--append` option.
                   1632: 
                   1633:  - Improved the documentation of the filter/exclude/include daemon parameters.
                   1634: 
                   1635: ### INTERNAL:
                   1636: 
                   1637:  - Fixed a couple minor bugs in the included popt library (ones which I sent to
                   1638:    the official popt project for inclusion in the 1.14 release).
                   1639: 
                   1640:  - Fixed a stat() call that should have been `do_stat()` so that the proper
                   1641:    normal/64-bit stat() function gets called. (Was in an area that should not
                   1642:    have caused problems, though.)
                   1643: 
                   1644:  - Changed the file-glob code to do a directory scan without using the `glob`
                   1645:    and `glob.h`. This lets us do the globbing with less memory churn, and also
                   1646:    avoid adding daemon-excluded items to the returned args.
                   1647: 
                   1648: ### DEVELOPER RELATED:
                   1649: 
                   1650:  - The configure script tries to get the user's compiler to not warn about
                   1651:    unused function parameters if the build is not including one or more of the
                   1652:    ACL/xattrs/iconv features.
                   1653: 
                   1654:  - The configure script now has better checks for figuring out if the included
                   1655:    popt code should be used or not.
                   1656: 
                   1657:  - Fixed two testsuite glitches: avoid a failure if someone's `cd` command
                   1658:    outputs the current directory when cd-ing to a relative path, and made the
                   1659:    itemized test query how rsync was built to determine if it should expect
                   1660:    hard-linked symlinks or not.
                   1661: 
                   1662:  - Updated the testsuite to verify that various bug fixes remain fixed.
                   1663: 
                   1664:  - The RPM spec file was updated to have: (1) comments for how to use the
                   1665:    rsync-patch tar file, and (2) an /etc/xinetd.d/rsync file.
                   1666: 
                   1667:  - Updated the build scripts to work with a revised FTP directory structure.
                   1668: 
                   1669: ------------------------------------------------------------------------------
                   1670: <a name="3.0.0"></a>
                   1671: 
                   1672: # NEWS for rsync 3.0.0 (1 Mar 2008)
                   1673: 
                   1674: ## Changes in this version:
                   1675: 
                   1676: ### PROTOCOL NUMBER:
                   1677: 
                   1678:  - The protocol number was changed to 30.
                   1679: 
                   1680: ### NOTABLE CHANGES IN BEHAVIOR:
                   1681: 
                   1682:  - The handling of implied directories when using `--relative` has changed to
                   1683:    send them as directories (e.g. no implied dir is ever sent as a symlink).
                   1684:    This avoids unexpected behavior and should not adversely affect most people.
                   1685:    If you're one of those rare individuals who relied upon having an implied
                   1686:    dir be duplicated as a symlink, you should specify the transfer of the
                   1687:    symlink and the transfer of the referent directory as separate args. (See
                   1688:    also `--keep-dirlinks` and `--no-implied-dirs`.) Also, exclude rules no
                   1689:    longer have a partial effect on implied dirs.
                   1690: 
                   1691:  - Requesting a remote file-listing without specifying `-r` (`--recursive`) now
                   1692:    sends the `-d` (`--dirs`) option to the remote rsync rather than sending
                   1693:    `-r` along with an extra exclude of `/*/*`. If the remote rsync does not
                   1694:    understand the `-d` option (i.e. it is 2.6.3 or older), you will need to
                   1695:    either turn off `-d` (`--no-d`), or specify `-r --exclude='/*/*'` manually.
                   1696: 
                   1697:  - In `--dry-run` mode, the last line of the verbose summary text is output
                   1698:    with a "(DRY RUN)" suffix to help remind you that no updates were made.
                   1699:    Similarly, `--only-write-batch` outputs `(BATCH ONLY)`.
                   1700: 
                   1701:  - A writable rsync daemon with `use chroot` disabled now defaults to a
                   1702:    symlink-munging behavior designed to make symlinks safer while also allowing
                   1703:    absolute symlinks to be stored and retrieved. This also has the effect of
                   1704:    making symlinks unusable while they're in the daemon's hierarchy. See the
                   1705:    daemon's `munge symlinks` parameter for details.
                   1706: 
                   1707:  - Starting up an extra copy of an rsync daemon will not clobber the pidfile
                   1708:    for the running daemon -- if the pidfile exists, the new daemon will exit
                   1709:    with an error. This means that your wrapper script that starts the rsync
                   1710:    daemon should be made to handle lock-breaking (if you want any automatic
                   1711:    breaking of locks to be done).
                   1712: 
                   1713: ### BUG FIXES:
                   1714: 
                   1715:  - A daemon with `use chroot = no` and excluded items listed in the daemon
                   1716:    config file now properly checks an absolute-path arg specified for these
                   1717:    options: `--compare-dest`, `--link-dest`, `--copy-dest`, `--partial-dir`,
                   1718:    `--backup-dir`, `--temp-dir`, and `--files-from`.
                   1719: 
                   1720:  - A daemon can now be told to disable all user- and group-name translation on
                   1721:    a per-module basis. This avoids a potential problem with a writable daemon
                   1722:    module that has `use chroot` enabled -- if precautions weren't taken, a user
                   1723:    could try to add a missing library and get rsync to use it. This makes rsync
                   1724:    safer by default, and more configurable when id-translation is not desired.
                   1725:    See the daemon's `numeric ids` parameter for full details.
                   1726: 
                   1727:  - A chroot daemon can now indicate which part of its path should affect the
                   1728:    chroot call, and which part should become an inside-chroot path for the
                   1729:    module. This allows you to have outside-the-transfer paths (such as for
                   1730:    libraries) even when you enable chroot protection. The idiom used in the
                   1731:    rsyncd.conf file is: `path = /chroot/dirs/./dirs/inside`
                   1732: 
                   1733:  - If a file's data arrived successfully on the receiving side but the rename
                   1734:    of the temporary file to the destination file failed AND the
                   1735:    `--remove-source-files` (or the deprecated `--remove-sent-files`) option was
                   1736:    specified, rsync no longer erroneously removes the associated source file.
                   1737: 
                   1738:  - Fixed the output of `-ii` when combined with one of the `--*-dest` options:
                   1739:    it now itemizes all the items, not just the changed ones.
                   1740: 
                   1741:  - Made the output of all file types consistent when using a `--*-dest` option.
                   1742:    Prior versions would output too many creation events for matching items.
                   1743: 
                   1744:  - The code that waits for a child pid now handles being interrupted by a
                   1745:    signal. This fixes a problem with the pre-xfer exec function not being able
                   1746:    to get the exit status from the script.
                   1747: 
                   1748:  - A negated filter rule (i.e. with a '!' modifier) no longer loses the
                   1749:    negation when sending the filter rules to the remote rsync.
                   1750: 
                   1751:  - Fixed a problem with the `--out-format` (aka `--log-format`) option %f: it
                   1752:    no longer outputs superfluous directory info for a non-daemon rsync.
                   1753: 
                   1754:  - Fixed a problem with `-vv` (double `--verbose`) and `--stats` when `pushing`
                   1755:    files (which includes local copies). Version 2.6.9 would complete the copy,
                   1756:    but exit with an error when the receiver output its memory stats.
                   1757: 
                   1758:  - If `--password-file` is used on a non-daemon transfer, rsync now complains
                   1759:    and exits. This should help users figure out that they can't use this option
                   1760:    to control a remote shell's password prompt.
                   1761: 
                   1762:  - Make sure that directory permissions of a newly-created destination
                   1763:    directory are handled right when `--perms` is left off.
                   1764: 
                   1765:  - The itemized output of a newly-created destination directory is now output
                   1766:    as a creation event, not a change event.
                   1767: 
                   1768:  - Improved `--hard-link` so that more corner cases are handled correctly when
                   1769:    combined with options such as `--link-dest` and/or `--ignore-existing`.
                   1770: 
                   1771:  - The `--append` option no longer updates a file that has the same size.
                   1772: 
                   1773:  - Fixed a bug when combining `--backup` and `--backup-dir` with `--inplace`:
                   1774:    any missing backup directories are now created.
                   1775: 
                   1776:  - Fixed a bug when using `--backup` and `--inplace` with `--whole-file` or
                   1777:    `--read-batch`: backup files are actually created now.
                   1778: 
                   1779:  - The daemon pidfile is checked and created sooner in the startup sequence.
                   1780: 
                   1781:  - If a daemon module's `path` value is not an absolute pathname, the code now
                   1782:    makes it absolute internally (making it work properly).
                   1783: 
                   1784:  - Ensure that a temporary file always has owner-write permission while we are
                   1785:    writing to it. This avoids problems with some network filesystems when
                   1786:    transferring read-only files.
                   1787: 
                   1788:  - Any errors output about password-file reading no longer cause an error at
                   1789:    the end of the run about a partial transfer.
                   1790: 
                   1791:  - The `--read-batch` option for protocol 30 now ensures that several more
                   1792:    options are set correctly for the current batch file: `--iconv`, `--acls`,
                   1793:    `--xattrs`, `--inplace`, `--append`, and `--append-verify`.
                   1794: 
                   1795:  - Using `--only-write-batch` to a daemon receiver now works properly (older
                   1796:    versions would update some files while writing the batch).
                   1797: 
                   1798:  - Avoid outputting a "file has vanished" message when the file is a broken
                   1799:    symlink and `--copy-unsafe-links` or `--copy-dirlinks` is used (the code
                   1800:    already handled this for `--copy-links`).
                   1801: 
                   1802:  - Fixed the combination of `--only-write-batch` and `--dry-run`.
                   1803: 
                   1804:  - Fixed rsync's ability to remove files that are not writable by the file's
                   1805:    owner when rsync is running as the same user.
                   1806: 
                   1807:  - When transferring large files, the sender's hashtable of checksums is kept
                   1808:    at a more reasonable state of fullness (no more than 80% full) so that the
                   1809:    scanning of the hashtable will not bog down as the number of blocks
                   1810:    increases.
                   1811: 
                   1812: ### ENHANCEMENTS:
                   1813: 
                   1814:  - A new incremental-recursion algorithm is now used when rsync is talking to
                   1815:    another 3.x version. This starts the transfer going more quickly (before all
                   1816:    the files have been found), and requires much less memory.  See the
                   1817:    `--recursive` option in the manpage for some restrictions.
                   1818: 
                   1819:  - Lowered memory use in the non-incremental-recursion algorithm for typical
                   1820:    option values (usually saving from 21-29 bytes per file).
                   1821: 
                   1822:  - The default `--delete` algorithm is now `--delete-during` when talking to a
                   1823:    3.x rsync. This is a faster scan than using `--delete-before` (which is the
                   1824:    default when talking to older rsync versions), and is compatible with the
                   1825:    new incremental recursion mode.
                   1826: 
                   1827:  - Rsync now allows multiple remote-source args to be specified rather than
                   1828:    having to rely on a special space-splitting side-effect of the remote-
                   1829:    shell. Additional remote args must specify the same host or an empty one
                   1830:    (e.g. empty: `:file1` or `::module/file2`). For example, this means that
                   1831:    local use of brace expansion now works: `rsync -av host:dir/{f1,f2} .`
                   1832: 
                   1833:  - Added the `--protect-args` (`-s`) option, that tells rsync to send most of
                   1834:    the command-line args at the start of the transfer rather than as args to
                   1835:    the remote-shell command. This protects them from space-splitting, and only
                   1836:    interprets basic wildcard special shell characters (`*?[`).
                   1837: 
                   1838:  - Added the `--delete-delay` option, which is a more efficient way to delete
                   1839:    files at the end of the transfer without needing a separate delete pass.
                   1840: 
                   1841:  - Added the `--acls` (`-A`) option to preserve Access Control Lists. This is
                   1842:    an improved version of the prior patch that was available, and it even
                   1843:    supports OS X ACLs. If you need to have backward compatibility with old,
                   1844:    ACL-patched versions of rsync, apply the acls.diff file from the patches
                   1845:    dir.
                   1846: 
                   1847:  - Added the `--xattrs` (`-X`) option to preserve extended attributes. This is
                   1848:    an improved version of the prior patch that was available, and it even
                   1849:    supports OS X xattrs (which includes their resource fork data). If you need
                   1850:    to have backward compatibility with old, xattr-patched versions of rsync,
                   1851:    apply the xattrs.diff file from the patches dir.
                   1852: 
                   1853:  - Added the `--fake-super` option that allows a non-super user to preserve all
                   1854:    attributes of a file by using a special extended-attribute idiom.  It even
                   1855:    supports the storing of foreign ACL data on your backup server.  There is
                   1856:    also an analogous `fake super` parameter for an rsync daemon.
                   1857: 
                   1858:  - Added the `--iconv` option, which allows rsync to convert filenames from one
                   1859:    character-set to another during the transfer. The default is to make this
                   1860:    feature available as long as your system has `iconv_open()`.  If compilation
                   1861:    fails, specify `--disable-iconv` to configure, and then rebuild. If you want
                   1862:    rsync to perform character-set conversions by default, you can specify
                   1863:    `--enable-iconv=CONVERT_STRING` with the default value for the `--iconv`
                   1864:    option that you wish to use. For example, `--enable-iconv=.` is a good
                   1865:    choice. See the rsync manpage for an explanation of the `--iconv` option's
                   1866:    settings.
                   1867: 
                   1868:  - A new daemon config parameter, `charset`, lets you control the character-
                   1869:    set that is used during an `--iconv` transfer to/from a daemon module. You
                   1870:    can also set your daemon to refuse `no-iconv` if you want to force the
                   1871:    client to use an `--iconv` transfer (requiring an rsync 3.x client).
                   1872: 
                   1873:  - Added the `--skip-compress=LIST` option to override the default list of file
                   1874:    suffixes that will not be compressed when using `--compress` (`-z`).
                   1875: 
                   1876:  - The daemon's default for `dont compress` was extended to include: `*.7z`
                   1877:    `*.mp[34]` `*.mov` `*.avi` `*.ogg` `*.jpg` `*.jpeg` and the name-matching routine was also
                   1878:    optimized to run more quickly.
                   1879: 
                   1880:  - The `--max-delete` option now outputs a warning if it skipped any file
                   1881:    deletions, including a count of how many deletions were skipped. (Older
                   1882:    versions just silently stopped deleting things.)
                   1883: 
                   1884:  - You may specify `--max-delete=0` to a 3.0.0 client to request that it warn
                   1885:    about extraneous files without deleting anything. If you're not sure what
                   1886:    version the client is, you can use the less-obvious `--max-delete=-1`, as
                   1887:    both old and new versions will treat that as the same request (though older
                   1888:    versions don't warn).
                   1889: 
                   1890:  - The `--hard-link` option now uses less memory on both the sending and
                   1891:    receiving side for all protocol versions. For protocol 30, the use of a
                   1892:    hashtable on the sending side allows us to more efficiently convey to the
                   1893:    receiver what files are linked together. This reduces the amount of data
                   1894:    sent over the socket by a considerable margin (rather than adding more
                   1895:    data), and limits the in-memory storage of the device+inode information to
                   1896:    just the sending side for the new protocol 30, or to the receiving side when
                   1897:    speaking an older protocol (note that older rsync versions kept the
                   1898:    device+inode information on both sides).
                   1899: 
                   1900:  - The filter rules now support a perishable (`p`) modifier that marks rules
                   1901:    that should not have an effect in a directory that is being deleted. e.g.
                   1902:    `-f '-p .svn/'` would only affect `live` .svn directories.
                   1903: 
                   1904:  - Rsync checks all the alternate-destination args for validity (e.g.
                   1905:    `--link-dest`). This lets the user know when they specified a directory that
                   1906:    does not exist.
                   1907: 
                   1908:  - If we get an ENOSYS error setting the time on a symlink, we don't complain
                   1909:    about it anymore (for those systems that even support the setting of the
                   1910:    modify-time on a symlink).
                   1911: 
                   1912:  - Protocol 30 now uses MD5 checksums instead of MD4.
                   1913: 
                   1914:  - Changed the `--append` option to not checksum the existing data in the
                   1915:    destination file, which speeds up file appending.
                   1916: 
                   1917:  - Added the `--append-verify` option, which works like the older `--append`
                   1918:    option (verifying the existing data in the destination file). For
                   1919:    compatibility with older rsync versions, any use of `--append` that is
                   1920:    talking protocol 29 or older will revert to the `--append-verify` method.
                   1921: 
                   1922:  - Added the `--contimeout=SECONDS` option that lets the user specify a
                   1923:    connection timeout for rsync daemon access.
                   1924: 
                   1925:  - Documented and extended the support for the `RSYNC_CONNECT_PROG` variable
                   1926:    that can be used to enhance the client side of a daemon connection.
                   1927: 
                   1928:  - Improved the dashes and double-quotes in the nroff manpage output.
                   1929: 
                   1930:  - Rsync now supports a lot more `--no-OPTION` override options.
                   1931: 
                   1932: ### INTERNAL:
                   1933: 
                   1934:  - The file-list sorting algorithm now uses a sort that keeps any same-named
                   1935:    items in the same order as they were specified. This allows rsync to always
                   1936:    ensure that the first of the duplicates is the one that will be included in
                   1937:    the copy. The new sort is also faster than the glibc version of qsort() and
                   1938:    mergesort().
                   1939: 
                   1940:  - Rsync now supports the transfer of 64-bit timestamps (`time_t` values).
                   1941: 
                   1942:  - Made the file-deletion code use a little less stack when recursing through a
                   1943:    directory hierarchy of extraneous files.
                   1944: 
                   1945:  - Fixed a build problem with older (2.x) versions of gcc.
                   1946: 
                   1947:  - Added some isType() functions that make dealing with signed characters
                   1948:    easier without forcing variables via casts.
                   1949: 
                   1950:  - Changed strcat/strcpy/sprintf function calls to use safer versions.
                   1951: 
                   1952:  - Upgraded the included popt version to 1.10.2 and improved its use of
                   1953:    string-handling functions.
                   1954: 
                   1955:  - Added missing prototypes for compatibility functions from the lib dir.
                   1956: 
                   1957:  - Configure determines if iconv() has a const arg, allowing us to avoid a
                   1958:    compiler warning.
                   1959: 
                   1960:  - Made the sending of some numbers more efficient for protocol 30.
                   1961: 
                   1962:  - Make sure that a daemon process doesn't mind if the client was weird and
                   1963:    omitted the `--server` option.
                   1964: 
                   1965:  - There are more internal logging categories available in protocol 30 than the
                   1966:    age-old FINFO and FERROR, including `FERROR_XFER` and FWARN. These new
                   1967:    categories allow some errors and warnings to go to stderr without causing an
                   1968:    erroneous end-of-run warning about some files not being able to be
                   1969:    transferred.
                   1970: 
                   1971:  - Improved the use of `const` on pointers.
                   1972: 
                   1973:  - Improved J.W.'s `pool_alloc` routines to add a way of incrementally freeing
                   1974:    older sections of a pool's memory.
                   1975: 
                   1976:  - The getaddrinfo.c compatibility code in the `lib` dir was replaced with some
                   1977:    new code (derived from samba, derived from PostgreSQL) that has a better
                   1978:    license than the old code.
                   1979: 
                   1980: ### DEVELOPER RELATED:
                   1981: 
                   1982:  - Rsync is now licensed under the GPLv3 or later.
                   1983: 
                   1984:  - Rsync is now being maintained in a `git` repository instead of CVS (though
                   1985:    the old CVS repository still exists for historical access).  Several
                   1986:    maintenance scripts were updated to work with git.
                   1987: 
                   1988:  - Generated files are no longer committed into the source repository. The
                   1989:    autoconf and autoheader commands are now automatically run during the normal
                   1990:    use of `configure` and `make`. The latest dev versions of all generated
                   1991:    files can also be copied from the samba.org web site (see the prepare-source
                   1992:    script's fetch option).
                   1993: 
                   1994:  - The `patches` directory of diff files is now built from branches in the
                   1995:    rsync git repository (branch patch/FOO creates file patches/FOO.diff).  This
                   1996:    directory is now distributed in a separate separate tar file named
                   1997:    rsync-patches-VERSION.tar.gz instead of the main rsync-VERSION.tar.gz.
                   1998: 
                   1999:  - The proto.h file is now built using a simple perl script rather than a
                   2000:    complex awk script, which proved to be more widely compatible.
                   2001: 
                   2002:  - When running the tests, we now put our per-test temp dirs into a sub-
                   2003:    directory named testtmp (which is created, if missing). This allows someone
                   2004:    to symlink the testtmp directory to another filesystem (which is useful if
                   2005:    the build dir's filesystem does not support ACLs and xattrs, but another
                   2006:    filesystem does).
                   2007: 
                   2008:  - Rsync now has a way of handling protocol-version changes during the
                   2009:    development of a new protocol version. This causes any out-of-sync versions
                   2010:    to speak an older protocol rather than fail in a cryptic manner.  This
                   2011:    addition makes it safer to deploy a pre-release version that may interact
                   2012:    with the public. This new exchange of sub-version info does not interfere
                   2013:    with the `{MIN,MAX}_PROTOCOL_VERSION` checking algorithm (which does not
                   2014:    have enough range to allow the main protocol number to be incremented for
                   2015:    every minor tweak in that happens during development).
                   2016: 
                   2017:  - The csprotocol.txt file was updated to mention the daemon protocol change in
                   2018:    the 3.0.0 release.
                   2019: 
                   2020: ------------------------------------------------------------------------------
                   2021: <a name="2.6.9"></a>
                   2022: 
                   2023: # NEWS for rsync 2.6.9 (6 Nov 2006)
                   2024: 
                   2025: ## Changes in this version:
                   2026: 
                   2027: ### BUG FIXES:
                   2028: 
                   2029:  - If rsync is interrupted via a handled signal (such as SIGINT), it will once
                   2030:    again clean-up its temp file from the destination dir.
                   2031: 
                   2032:  - Fixed an overzealous sanitizing bug in the handling of the `--link-dest`,
                   2033:    `--copy-dest`, and `--compare-dest` options to a daemon without chroot: if
                   2034:    the copy's destination dir is deeper than the top of the module's path,
                   2035:    these options now accept a safe number of parent-dir (../) references (since
                   2036:    these options are relative to the destination dir). The old code incorrectly
                   2037:    chopped off all `../` prefixes for these options, no matter how deep the
                   2038:    destination directory was in the module's hierarchy.
                   2039: 
                   2040:  - Fixed a bug where a deferred info/error/log message could get sent directly
                   2041:    to the sender instead of being handled by rwrite() in the generator. This
                   2042:    fixes an `unexpected tag 3` fatal error, and should also fix a potential
                   2043:    problem where a deferred info/error message from the receiver might bypass
                   2044:    the log file and get sent only to the client process. (These problems could
                   2045:    only affect an rsync daemon that was receiving files.)
                   2046: 
                   2047:  - Fixed a bug when `--inplace` was combined with a `--*-dest` option and we
                   2048:    update a file's data using an alternate basis file. The code now notices
                   2049:    that it needs to copy the matching data from the basis file instead of
                   2050:    (wrongly) assuming that it was already present in the file.
                   2051: 
                   2052:  - Fixed a bug where using `--dry-run` with a `--*-dest` option with a path
                   2053:    relative to a directory that does not yet exist: the affected option gets
                   2054:    its proper path value so that the output of the dry-run is right.
                   2055: 
                   2056:  - Fixed a bug in the %f logfile escape when receiving files: the destination
                   2057:    path is now included in the output (e.g. you can now tell when a user
                   2058:    specifies a subdir inside a module).
                   2059: 
                   2060:  - If the receiving side fails to create a directory, it will now skip trying
                   2061:    to update everything that is inside that directory.
                   2062: 
                   2063:  - If `--link-dest` is specified with `--checksum` but without `--times`, rsync
                   2064:    will now allow a hard-link to be created to a matching link-dest file even
                   2065:    when the file's modify-time doesn't match the server's file.
                   2066: 
                   2067:  - The daemon now calls more timezone-using functions prior to doing a chroot.
                   2068:    This should help some C libraries to generate proper timestamps from inside
                   2069:    a chrooted daemon (and to not try to access /etc/timezone over and over
                   2070:    again).
                   2071: 
                   2072:  - Fixed a bug in the handling of an absolute `--partial-dir=ABS_PATH` option:
                   2073:    it now deletes an alternate basis file from the partial-dir that was used to
                   2074:    successfully update a destination file.
                   2075: 
                   2076:  - Fixed a bug in the handling of `--delete-excluded` when using a per-dir
                   2077:    merge file: the merge file is now honored on the receiving side, and only
                   2078:    its unqualified include/exclude commands are ignored (just as is done for
                   2079:    global include/excludes).
                   2080: 
                   2081:  - Fixed a recent bug where `--delete` was not working when transferring from
                   2082:    the root (/) of the filesystem with `--relative` enabled.
                   2083: 
                   2084:  - Fixed a recent bug where an `--exclude='*'` could affect the root (/) of the
                   2085:    filesystem with `--relative` enabled.
                   2086: 
                   2087:  - When `--inplace` creates a file, it is now created with owner read/write
                   2088:    permissions (0600) instead of no permissions at all. This avoids a problem
                   2089:    continuing a transfer that was interrupted (since `--inplace` will not
                   2090:    update a file that has no write permissions).
                   2091: 
                   2092:  - If either `--remove-source-files` or `--remove-sent-files` is enabled and we
                   2093:    are unable to remove the source file, rsync now outputs an error.
                   2094: 
                   2095:  - Fixed a bug in the daemon's `incoming chmod` rule: newly-created directories
                   2096:    no longer get the 'F' (file) rules applied to them.
                   2097: 
                   2098:  - Fixed an infinite loop bug when a filter rule was rejected due to being
                   2099:    overly long.
                   2100: 
                   2101:  - When the server receives a `--partial-dir` option from the client, it no
                   2102:    longer runs the client-side code that adds an assumed filter rule (since the
                   2103:    client will be sending us the rules in the usual manner, and they may have
                   2104:    chosen to override the auto-added rule).
                   2105: 
                   2106: ### ENHANCEMENTS:
                   2107: 
                   2108:  - Added the `--log-file=FILE` and `--log-file-format=FORMAT` options. These
                   2109:    can be used to tell any rsync to output what it is doing to a log file.
                   2110:    They work with a client rsync, a non-daemon server rsync (see the man page
                   2111:    for instructions), and also allows the overriding of rsyncd.conf settings
                   2112:    when starting a daemon.
                   2113: 
                   2114:  - The `--log-format` option was renamed to be `--out-format` to avoid
                   2115:    confusing it with affecting the log-file output. (The old option remains as
                   2116:    an alias for the new to preserve backward compatibility.)
                   2117: 
                   2118:  - Made `log file` and `syslog facility` settable on a per-module basis in the
                   2119:    daemon's config file.
                   2120: 
                   2121:  - Added the `--remove-source-files` option as a replacement for the (now
                   2122:    deprecated) `--remove-sent-files` option. This new option removes all
                   2123:    non-dirs from the source directories, even if the file was already
                   2124:    up-to-date. This fixes a problem where interrupting an rsync that was using
                   2125:    `--remove-sent-files` and restarting it could leave behind a file that the
                   2126:    earlier rsync synchronized, but didn't get to remove.  (The deprecated
                   2127:    `--remove-sent-files` is still understood for now, and still behaves in the
                   2128:    same way as before.)
                   2129: 
                   2130:  - Added the option `--no-motd` to suppress the message-of-the-day output from
                   2131:    a daemon when doing a copy. (See the manpage for a caveat.)
                   2132: 
                   2133:  - Added a new environment variable to the pre-/post-xfer exec commands (in the
                   2134:    daemon's config file): `RSYNC_PID`. This value will be the same in both the
                   2135:    pre- and post-xfer commands, so it can be used as a unique ID if the
                   2136:    pre-xfer command wants to cache some arg/request info for the post-xfer
                   2137:    command.
                   2138: 
                   2139: ### INTERNAL:
                   2140: 
                   2141:  - Did a code audit using IBM's code-checker program and made several changes,
                   2142:    including: replacing most of the strcpy() and sprintf() calls with
                   2143:    strlcpy(), snprintf(), and memcpy(), adding a 0-value to an enum that had
                   2144:    been intermingling a literal 0 with the defined enum values, silencing some
                   2145:    uninitialized memory checks, marking some functions with a `noreturn`
                   2146:    attribute, and changing an `if` that could never succeed on some platforms
                   2147:    into a pre-processor directive that conditionally compiles the code.
                   2148: 
                   2149:  - Fixed a potential bug in `f_name_cmp()` when both the args are a top-level
                   2150:    `.` dir (which doesn't happen in normal operations).
                   2151: 
                   2152:  - Changed `exit_cleanup()` so that it can never return instead of exit.  The
                   2153:    old code might return if it found the `exit_cleanup()` function was being
                   2154:    called recursively. The new code is segmented so that any recursive calls
                   2155:    move on to the next step of the exit-processing.
                   2156: 
                   2157:  - The macro WIFEXITED(stat) will now be defined if the OS didn't already
                   2158:    define it.
                   2159: 
                   2160: ### DEVELOPER RELATED:
                   2161: 
                   2162:  - The acls.diff and xattrs.diff patches have received a bunch of work to make
                   2163:    them much closer to being acceptable in the main distribution.  The xattrs
                   2164:    patch also has some preliminary Mac OS X and FreeBSD compatibility code that
                   2165:    various system types to exchange extended file-attributes.
                   2166: 
                   2167:  - A new diff in the patches dir, fake-root.diff, allows rsync to maintain a
                   2168:    backup hierarchy with full owner, group, and device info without actually
                   2169:    running as root. It does this using a special extended attribute, so it
                   2170:    depends on xattrs.diff (which depends on acls.diff).
                   2171: 
                   2172:  - The rsync.yo and rsyncd.conf.yo files have been updated to work better with
                   2173:    the latest yodl 2.x releases.
                   2174: 
                   2175:  - Updated config.guess and config.sub to their 2006-07-02 versions.
                   2176: 
                   2177:  - Updated various files to include the latest FSF address and to have
                   2178:    consistent opening comments.
                   2179: 
                   2180: ------------------------------------------------------------------------------
                   2181: <a name="2.6.8"></a>
                   2182: 
                   2183: # NEWS for rsync 2.6.8 (22 Apr 2006)
                   2184: 
                   2185: ## Changes in this version:
                   2186: 
                   2187: ### BUG FIXES:
                   2188: 
                   2189:  - Fixed a bug in the exclude code where an anchored exclude without any
                   2190:    wildcards fails to match an absolute source arg, but only when `--relative`
                   2191:    is in effect.
                   2192: 
                   2193:  - Improved the I/O code for the generator to fix a potential hang when the
                   2194:    receiver gets an EOF on the socket but the generator's select() call never
                   2195:    indicates that the socket is writable for it to be notified about the EOF.
                   2196:    (This can happen when using stunnel).
                   2197: 
                   2198:  - Fixed a problem with the file-reading code where a failed read (such as that
                   2199:    caused by a bad sector) would not advance the file's read-position beyond
                   2200:    the failed read's data.
                   2201: 
                   2202:  - Fixed a logging bug where the `log file` directive was not being honored in
                   2203:    a single-use daemon (one spawned by a remote-shell connection or by init).
                   2204: 
                   2205:  - If rsync cannot honor the `--delete` option, we output an error and exit
                   2206:    instead of silently ignoring the option.
                   2207: 
                   2208:  - Fixed a bug in the `--link-dest` code that prevented special files (such as
                   2209:    fifos) from being linked.
                   2210: 
                   2211:  - The ability to hard-link symlinks and special files is now determined at
                   2212:    configure time instead of at runtime. This fixes a bug with `--link-dest`
                   2213:    creating a hard-link to a symlink's referent on a BSD system.
                   2214: 
                   2215: ### ENHANCEMENTS:
                   2216: 
                   2217:  - In daemon mode, if rsync fails to bind to the requested port, the error(s)
                   2218:    returned by socket() and/or bind() are now logged.
                   2219: 
                   2220:  - When we output a fatal error, we now output the version of rsync in the
                   2221:    message.
                   2222: 
                   2223:  - Improved the documentation for the `--owner` and `--group` options.
                   2224: 
                   2225:  - The rsyncstats script in `support` has an improved line-parsing regex that
                   2226:    is easier to read and also makes it to parse syslog-generated lines.
                   2227: 
                   2228:  - A new script in `support`: file-attr-restore, can be used to restore the
                   2229:    attributes of a file-set (the permissions, ownership, and group info) taken
                   2230:    from the cached output of a `find ARG... -ls` command.
                   2231: 
                   2232: ### DEVELOPER RELATED:
                   2233: 
                   2234:  - Removed the unused function `write_int_named()`, the unused variable
                   2235:    `io_read_phase`, and the rarely used variable `io_write_phase`. This also
                   2236:    elides the confusing 'phase "unknown"' part of one error message.
                   2237: 
                   2238:  - Removed two unused configure checks and two related (also unused)
                   2239:    compatibility functions.
                   2240: 
                   2241:  - The xattrs.diff patch received a security fix that prevents a potential
                   2242:    buffer overflow in the `receive_xattr()` code.
                   2243: 
                   2244:  - The acls.diff patch has been improved quite a bit, with more to come.
                   2245: 
                   2246:  - A new patch was added: log-file.diff. This contains an early version of a
                   2247:    future option, `--log-file=FILE`, that will allow any rsync to log its
                   2248:    actions to a file (something that only a daemon supports at present).
                   2249: 
                   2250: ------------------------------------------------------------------------------
                   2251: <a name="2.6.7"></a>
                   2252: 
                   2253: # NEWS for rsync 2.6.7 (11 Mar 2006)
                   2254: 
                   2255: ## Changes in this version:
                   2256: 
                   2257: ### OUTPUT CHANGES:
                   2258: 
                   2259:  - The letter 'D' in the itemized output was being used for both devices
                   2260:    (character or block) as well as other special files (such as fifos and named
                   2261:    sockets). This has changed to separate non-device special files under the
                   2262:    'S' designation (e.g. `cS+++++++ path/fifo`). See also the `--specials`
                   2263:    option, below.
                   2264: 
                   2265:  - The way rsync escapes unreadable characters has changed. First, rsync now
                   2266:    has support for recognizing valid multibyte character sequences in your
                   2267:    current locale, allowing it to escape fewer characters than before for a
                   2268:    locale such as UTF-8. Second, it now uses an escape idiom of `\#123`, which
                   2269:    is the literal string `\#` followed by exactly 3 octal digits. Rsync no
                   2270:    longer doubles a backslash character in a filename (e.g. it used to output
                   2271:    `foo\\bar` when copying `foo\bar`) -- now it only escapes a backslash that
                   2272:    is followed by a hash-sign and 3 digits (0-9) (e.g. it will output
                   2273:    `foo\#134#789` when copying `foo\#789`). See also the `--8-bit-output`
                   2274:    (`-8`) option, mentioned below.
                   2275: 
                   2276:    Script writers: the local rsync is the one that outputs escaped names, so if
                   2277:    you need to support unescaping of filenames for older rsyncs, I'd suggest
                   2278:    that you parse the output of `rsync --version` and only use the old
                   2279:    unescaping rules for 2.6.5 and 2.6.6.
                   2280: 
                   2281: ### BUG FIXES:
                   2282: 
                   2283:  - Fixed a really old bug that caused `--checksum` (`-c`) to checksum all the
                   2284:    files encountered during the delete scan (ouch).
                   2285: 
                   2286:  - Fixed a potential hang in a remote generator: when the receiver gets a
                   2287:    read-error on the socket, it now signals the generator about this so that
                   2288:    the generator does not try to send any of the terminating error messages to
                   2289:    the client (avoiding a potential hang in some setups).
                   2290: 
                   2291:  - Made hard-links work with symlinks and devices again.
                   2292: 
                   2293:  - If the sender gets an early EOF reading a source file, we propagate this
                   2294:    error to the receiver so that it can discard the file and try requesting it
                   2295:    again (which is the existing behavior for other kinds of read errors).
                   2296: 
                   2297:  - If a device-file/special-file changes permissions, rsync now updates the
                   2298:    permissions without recreating the file.
                   2299: 
                   2300:  - If the user specifies a remote-host for both the source and destination, we
                   2301:    now output a syntax error rather than trying to open the destination
                   2302:    hostspec as a filename.
                   2303: 
                   2304:  - When `--inplace` creates a new destination file, rsync now creates it with
                   2305:    permissions 0600 instead of 0000 -- this makes restarting possible when the
                   2306:    transfer gets interrupted in the middle of sending a new file.
                   2307: 
                   2308:  - Reject the combination of `--inplace` and `--sparse` since the sparse-output
                   2309:    algorithm doesn't work when overwriting existing data.
                   2310: 
                   2311:  - Fixed the directory name in the error that is output when `pop_dir()` fails.
                   2312: 
                   2313:  - Really fixed the parsing of a `!` entry in .cvsignore files this time.
                   2314: 
                   2315:  - If the generator gets a stat() error on a file, output it (this used to
                   2316:    require at least `-vv` for the error to be seen).
                   2317: 
                   2318:  - If waitpid() fails or the child rsync didn't exit cleanly, we now handle the
                   2319:    exit status properly and generate a better error.
                   2320: 
                   2321:  - Fixed some glitches in the double-verbose output when using `--copy-dest`,
                   2322:    `--link-dest`, or `--compare-dest`. Also improved how the verbose output
                   2323:    handles hard-links (within the transfer) that had an up-to-date alternate
                   2324:    `dest` file, and copied files (via `--copy-dest`).
                   2325: 
                   2326:  - Fixed the matching of the dont-compress items (e.g. `*.gz`) against files
                   2327:    that have a path component containing a slash.
                   2328: 
                   2329:  - If the code reading a filter/exclude file gets an EINTR error, rsync now
                   2330:    clears the error flag on the file handle so it can keep on reading.
                   2331: 
                   2332:  - If `--relative` is active, the sending side cleans up trailing `/` or `/.`
                   2333:    suffixes to avoid triggering a bug in older rsync versions. Also, we now
                   2334:    reject a `..` dir if it would be sent as a relative dir.
                   2335: 
                   2336:  - If a non-directory is in the way of a directory and rsync is run with
                   2337:    `--dry-run` and `--delete`, rsync no longer complains about not being able
                   2338:    to opendir() the not-yet present directory.
                   2339: 
                   2340:  - When `--list-only` is used and a non-existent local destination dir was also
                   2341:    specified as a destination, rsync no longer generates a warning about being
                   2342:    unable to create the missing directory.
                   2343: 
                   2344:  - Fixed some problems with `--relative --no-implied-dirs` when the destination
                   2345:    directory did not yet exist: we can now create a symlink or device when it
                   2346:    is the first thing in the missing dir, and `--fuzzy` no longer complains
                   2347:    about being unable to open the missing dir.
                   2348: 
                   2349:  - Fixed a bug where the `--copy-links` option would not affect implied
                   2350:    directories without `--copy-unsafe-links` (see `--relative`).
                   2351: 
                   2352:  - Got rid of the need for `--force` to be used in some circumstances with
                   2353:    `--delete-after` (making it consistent with
                   2354:    `--delete-before`/`--delete-during`).
                   2355: 
                   2356:  - Rsync now ignores the SIGXFSZ signal, just in case your OS sends this when a
                   2357:    file is too large (rsync handles the write error).
                   2358: 
                   2359:  - Fixed a bug in the Proxy-Authorization header's base64-encoded value: it was
                   2360:    not properly padded with trailing '=' chars. This only affects a user that
                   2361:    need to use a password-authenticated proxy for an outgoing daemon-rsync
                   2362:    connection.
                   2363: 
                   2364:  - If we're transferring an empty directory to a new name, rsync no longer
                   2365:    forces `S_IWUSR` if it wasn't already set, nor does it accidentally leave it
                   2366:    set.
                   2367: 
                   2368:  - Fixed a bug in the debug output (`-vvvvv`) that could mention the wrong
                   2369:    checksum for the current file offset.
                   2370: 
                   2371:  - Rsync no longer allows a single directory to be copied over a non-directory
                   2372:    destination arg.
                   2373: 
                   2374: ### ENHANCEMENTS:
                   2375: 
                   2376:  - Added the `--append` option that makes rsync append data onto files that are
                   2377:    longer on the source than the destination (this includes new files).
                   2378: 
                   2379:  - Added the `--min-size=SIZE` option to exclude small files from the transfer.
                   2380: 
                   2381:  - Added the `--compress-level` option to allow you to set how aggressive
                   2382:    rsync's compression should be (this option implies `--compress`).
                   2383: 
                   2384:  - Enhanced the parsing of the SIZE value for `--min-size` and `--max-size` to
                   2385:    allow easy entry of multiples of 1000 (instead of just multiples of 1024)
                   2386:    and off-by-one values too (e.g. `--max-size=8mb-1`).
                   2387: 
                   2388:  - Added the `--8-bit-output` (`-8`) option, which tells rsync to avoid
                   2389:    escaping high-bit characters that it thinks are unreadable in the current
                   2390:    locale.
                   2391: 
                   2392:  - The new option `--human-readable` (`-h`) changes the output of `--progress`,
                   2393:    `--stats`, and the end-of-run summary to be easier to read. If repeated, the
                   2394:    units become powers of 1024 instead of powers of 1000. (The old meaning of
                   2395:    `-h`, as a shorthand for `--help`, still works as long as you just use it on
                   2396:    its own, as in `rsync -h`.)
                   2397: 
                   2398:  - If lutimes() and/or lchmod() are around, use them to allow the preservation
                   2399:    of attributes on symlinks.
                   2400: 
                   2401:  - The `--link-dest` option now affects symlinks and devices (when possible).
                   2402: 
                   2403:  - Added two config items to the rsyncd.conf parsing: `pre-xfer exec` and
                   2404:    `post-xfer exec`. These allow a command to be specified on a per-module
                   2405:    basis that will be run before and/or after a daemon-mode transfer. (See the
                   2406:    man page for a list of the environment variables that are set with
                   2407:    information about the transfer.)
                   2408: 
                   2409:  - When using the `--relative` option, you can now insert a dot dir in the
                   2410:    source path to indicate where the replication of the source dirs should
                   2411:    start. For example, if you specify a source path of
                   2412:    rsync://host/module/foo/bar/./baz/dir with `-R`, rsync will now only
                   2413:    replicate the `baz/dir` part of the source path (note: a trailing dot dir is
                   2414:    unaffected unless it also has a trailing slash).
                   2415: 
                   2416:  - Added some new `--no-FOO` options that make it easier to override unwanted
                   2417:    implied or default options. For example, `-a --no-o` (aka `--archive
                   2418:    --no-owner`) can be used to turn off the preservation of file ownership that
                   2419:    is implied by `-a`.
                   2420: 
                   2421:  - Added the `--chmod=MODE` option that allows the destination permissions to
                   2422:    be changed from the source permissions. E.g. `--chmod=g+w,o-rwx`
                   2423: 
                   2424:  - Added the `incoming chmod` and `outgoing chmod` daemon options that allow a
                   2425:    module to specify what permissions changes should be applied to all files
                   2426:    copied to and from the daemon.
                   2427: 
                   2428:  - Allow the `--temp-dir` option to be specified when starting a daemon, which
                   2429:    sets the default temporary directory for incoming files.
                   2430: 
                   2431:  - If `--delete` is combined with `--dirs` without `--recursive`, rsync will
                   2432:    now delete in any directory whose content is being synchronized.
                   2433: 
                   2434:  - If `--backup` is combined with `--delete` without `--backup-dir` (and
                   2435:    without `--delete-excluded`), we add a `protect` filter-rule to ensure that
                   2436:    files with the backup suffix are not deleted.
                   2437: 
                   2438:  - The file-count stats that are output by `--progress` were improved to better
                   2439:    indicate what the numbers mean. For instance, the output: `(xfer#5,
                   2440:    to-check=8383/9999)` indicates that this was the fifth file to be
                   2441:    transferred, and we still need to check 8383 more files out of a total of
                   2442:    9999.
                   2443: 
                   2444:  - The include/exclude code now allows a `dir/***` directive (with 3 trailing
                   2445:    stars) to match both the dir itself as well as all the content below the dir
                   2446:    (`dir/**` would not match the dir).
                   2447: 
                   2448:  - Added the `--prune-empty-dirs` (`-m`) option that makes the receiving rsync
                   2449:    discard empty chains of directories from the file-list. This makes it easier
                   2450:    to selectively copy files from a source hierarchy and end up with just the
                   2451:    directories needed to hold the resulting files.
                   2452: 
                   2453:  - If the `--itemize-changes` (`-i`) option is repeated, rsync now includes
                   2454:    unchanged files in the itemized output (similar to `-vv`, but without all
                   2455:    the other verbose messages that can get in the way). Of course, the client
                   2456:    must be version 2.6.7 for this to work, but the remote rsync only needs to
                   2457:    be 2.6.7 if you're pushing files.
                   2458: 
                   2459:  - Added the `--specials` option to tell rsync to copy non-device special files
                   2460:    (which rsync now attempts even as a normal user). The `--devices` option now
                   2461:    requests the copying of just devices (character and block).  The `-D` option
                   2462:    still requests both (e.g. `--devices` and `--specials`), `-a` still implies
                   2463:    `-D`, and non-root users still get a silent downgrade that omits device
                   2464:    copying.
                   2465: 
                   2466:  - Added the `--super` option to make the receiver always attempt super-user
                   2467:    activities. This is useful for systems that allow things such as devices to
                   2468:    be created or ownership to be set without being UID 0, and is also useful
                   2469:    for someone who wants to ensure that errors will be output if the receiving
                   2470:    rsync isn't being run as root.
                   2471: 
                   2472:  - Added the `--sockopts` option for those few who want to customize the TCP
                   2473:    options used to contact a daemon rsync.
                   2474: 
                   2475:  - Added a way for the `--temp-dir` option to be combined with a partial-dir
                   2476:    setting that lets rsync avoid non-atomic updates (for those times when
                   2477:    `--temp-dir` is not being used because space is tight).
                   2478: 
                   2479:  - A new support script, files-to-excludes, will transform a list of files into
                   2480:    a set of include/exclude directives that will copy those files.
                   2481: 
                   2482:  - A new option, `--executability` (`-E`) can be used to preserve just the
                   2483:    execute bit on files, for those times when using the `--perms` option is not
                   2484:    desired.
                   2485: 
                   2486:  - The daemon now logs each connection and also each module-list request that
                   2487:    it receives.
                   2488: 
                   2489:  - New log-format options: %M (modtime), %U (uid), %G (gid), and %B (permission
                   2490:    bits, e.g. `rwxr-xrwt`).
                   2491: 
                   2492:  - The `--dry-run` option no longer forces the enabling of `--verbose`.
                   2493: 
                   2494:  - The `--remove-sent-files` option now does a better job of incrementally
                   2495:    removing the sent files on the sending side (older versions tended to clump
                   2496:    up all the removals at the end).
                   2497: 
                   2498:  - A daemon now supersedes its minimal SIGCHLD handler with the standard
                   2499:    PID-remembering version after forking. This ensures that the generator can
                   2500:    get the child-exit status from the receiver.
                   2501: 
                   2502:  - Use of the `--bwlimit` option no longer interferes with the remote rsync
                   2503:    sending error messages about invalid/refused options.
                   2504: 
                   2505:  - Rsync no longer returns a usage error when used with one local source arg
                   2506:    and no destination: this now implies the `--list-only` option, just like the
                   2507:    comparable situation with a remote source arg.
                   2508: 
                   2509:  - Added the `--copy-dirlinks` option, a more limited version of
                   2510:    `--copy-links`.
                   2511: 
                   2512:  - Various documentation improvements, including: a better synopsis, some
                   2513:    improved examples, a better discussion of the presence and absence of
                   2514:    `--perms` (including how it interacts with the new `--executability` and
                   2515:    `--chmod` options), an extended discussion of `--temp-dir`, an improved
                   2516:    discussion of `--partial-dir`, a better description of rsync's pattern
                   2517:    matching characters, an improved `--no-implied-dirs` section, and the
                   2518:    documenting of what the `--stats` option outputs.
                   2519: 
                   2520:  - Various new and updated diffs in the patches dir, including: acls.diff,
                   2521:    xattrs.diff, atimes.diff, detect-renamed.diff, and slp.diff.
                   2522: 
                   2523: ### INTERNAL:
                   2524: 
                   2525:  - We now use sigaction() and sigprocmask() if possible, and fall back on
                   2526:    signal() if not. Using sigprocmask() ensures that rsync enables all the
                   2527:    signals that it needs, just in case it was started in a masked state.
                   2528: 
                   2529:  - Some buffer sizes were expanded a bit, particularly on systems where
                   2530:    MAXPATHLEN is overly small (e.g. Cygwin).
                   2531: 
                   2532:  - If `io_printf()` tries to format more data than fits in the buffer, exit
                   2533:    with an error instead of transmitting a truncated buffer.
                   2534: 
                   2535:  - If a `va_copy` macro is defined, lib/snprintf.c will use it when defining
                   2536:    the `VA_COPY` macro.
                   2537: 
                   2538:  - Reduced the amount of stack memory needed for each level of directory
                   2539:    recursion by nearly MAXPATHLEN bytes.
                   2540: 
                   2541:  - The wildmatch function was extended to allow an array of strings to be
                   2542:    supplied as the string to match. This allows the exclude code to do less
                   2543:    string copying.
                   2544: 
                   2545:  - Got rid of the `safe_fname()` function (and all the myriad calls) and
                   2546:    replaced it with a new function in the log.c code that filters all the
                   2547:    output going to the terminal.
                   2548: 
                   2549:  - Unified the `f_name()` and the `f_name_to()` functions.
                   2550: 
                   2551:  - Improved the hash-table code the sender uses to handle checksums to make it
                   2552:    use slightly less memory and run just a little faster.
                   2553: 
                   2554: ### DEVELOPER RELATED:
                   2555: 
                   2556:  - The diffs in the patches dir now require `patch -p1 <DIFF` instead of the
                   2557:    previous `-p0`. Also, the version included in the release tar now affect
                   2558:    generated files (e.g. configure, rsync.1, proto.h, etc.), so it is no longer
                   2559:    necessary to run autoconf and/or yodl unless you're applying a patch that
                   2560:    was checked out from CVS.
                   2561: 
                   2562:  - Several diffs in the patches dir now use the proper `--enable-FOO` configure
                   2563:    option instead of `--with-FOO` to turn on the inclusion of the newly patched
                   2564:    feature.
                   2565: 
                   2566:  - There is a new script, `prepare-source` than can be used to update the
                   2567:    various generated files (proto.h, configure, etc.) even before configure has
                   2568:    created the Makefile (this is mainly useful when patching the source with a
                   2569:    patch that doesn't affect generated files).
                   2570: 
                   2571:  - The testsuite now sets HOME so that it won't be affected by a file such as
                   2572:    ~/.popt.
                   2573: 
                   2574: ------------------------------------------------------------------------------
                   2575: <a name="2.6.6"></a>
                   2576: 
                   2577: # NEWS for rsync 2.6.6 (28 Jul 2005)
                   2578: 
                   2579: ## Changes in this version:
                   2580: 
                   2581: ### SECURITY FIXES:
                   2582: 
                   2583:  - The zlib code was upgraded to version 1.2.3 in order to make it more secure.
                   2584:    While the widely-publicized security problem in zlib 1.2.2 did not affect
                   2585:    rsync, another security problem surfaced that affects rsync's zlib 1.1.4.
                   2586: 
                   2587: ### BUG FIXES:
                   2588: 
                   2589:  - The setting of `flist->high` in `clean_flist()` was wrong for an empty list.
                   2590:    This could cause `flist_find()` to crash in certain rare circumstances (e.g.
                   2591:    if just the right directory setup was around when `--fuzzy` was combined
                   2592:    with `--link-dest`).
                   2593: 
                   2594:  - The outputting of hard-linked files when verbosity was > 1 was not right:
                   2595:    (1) Without `-i` it would output the name of each hard-linked file as though
                   2596:    it had been changed; it now outputs a `is hard linked` message for the file.
                   2597:    (2) With `-i` it would output all dots for the unchanged attributes of a
                   2598:    hard-link; it now changes those dots to spaces, as is done for other totally
                   2599:    unchanged items.
                   2600: 
                   2601:  - When backing up a changed symlink or device, get rid of any old backup item
                   2602:    so that we don't get an `already exists` error.
                   2603: 
                   2604:  - A couple places that were comparing a local and a remote modification-time
                   2605:    were not honoring the `--modify-window` option.
                   2606: 
                   2607:  - Fixed a bug where the 'p' (permissions) itemized-changes flag might get set
                   2608:    too often (if some non-significant mode bits differed).
                   2609: 
                   2610:  - Fixed a really old, minor bug that could cause rsync to warn about being
                   2611:    unable to mkdir() a path that ends in `/.` because it just created the
                   2612:    directory (required `--relative`, `--no-implied-dirs`, a source path that
                   2613:    ended in either a trailing slash or a trailing `/.`, and a non-existing
                   2614:    destination dir to tickle the bug in a recent version).
                   2615: 
                   2616: ### ENHANCEMENTS:
                   2617: 
                   2618:  - Made the `max verbosity` setting in the rsyncd.conf file settable on a
                   2619:    per-module basis (which now matches the documentation).
                   2620: 
                   2621:  - The support/rrsync script has been upgraded to verify the args of options
                   2622:    that take args (instead of rejecting any such options). The script was also
                   2623:    changed to try to be more secure and to fix a problem in the parsing of a
                   2624:    pull operation that has multiple sources.
                   2625: 
                   2626:  - Improved the documentation that explains the difference between a normal
                   2627:    daemon transfer and a daemon-over remote-shell transfer.
                   2628: 
                   2629:  - Some of the diffs supplied in the patches dir were fixed and/or improved.
                   2630: 
                   2631: ### BUILD CHANGES:
                   2632: 
                   2633:  - Made configure define `NOBODY_USER` (currently hard-wired to `nobody`) and
                   2634:    `NOBODY_GROUP` (set to either `nobody` or `nogroup` depending on what we
                   2635:    find in the /etc/group file).
                   2636: 
                   2637:  - Added a test to the test suite, itemized.test, that tests the output of `-i`
                   2638:    (log-format w/%i) and some double-verbose messages.
                   2639: 
                   2640: ------------------------------------------------------------------------------
                   2641: <a name="2.6.5"></a>
                   2642: 
                   2643: # NEWS for rsync 2.6.5 (1 Jun 2005)
                   2644: 
                   2645: ## Changes in this version:
                   2646: 
                   2647: ### OUTPUT CHANGES:
                   2648: 
                   2649:  - Non-printable chars in filenames are now output using backslash-escaped
                   2650:    characters rather than '?'s. Any non-printable character is output using 3
                   2651:    digits of octal (e.g. `\n` -> `\012`), and a backslash is now output as
                   2652:    `\\`. Rsync also uses your locale setting, which can make it treat fewer
                   2653:    high-bit characters as non-printable.
                   2654: 
                   2655:  - If rsync received an empty file-list when pulling files, it would output a
                   2656:    `nothing to do` message and exit with a 0 (success) exit status, even if the
                   2657:    remote rsync returned an error (it did not do this under the same conditions
                   2658:    when pushing files). This was changed to make the pulling behavior the same
                   2659:    as the pushing behavior: we now do the normal end-of-run outputting
                   2660:    (depending on options) and exit with the appropriate exit status.
                   2661: 
                   2662: ### BUG FIXES:
                   2663: 
                   2664:  - A crash bug was fixed when a daemon had its `path` set to `/`, did not have
                   2665:    chroot enabled, and used some anchored excludes in the rsyncd.conf file.
                   2666: 
                   2667:  - Fixed a bug in the transfer of a single file when `-H` is specified (rsync
                   2668:    would either infinite loop or perhaps crash).
                   2669: 
                   2670:  - Fixed a case where the generator might try (and fail) to tweak the
                   2671:    write-permissions of a read-only directory in list-only mode (this only
                   2672:    caused an annoying warning message).
                   2673: 
                   2674:  - If `--compare-dest` or `--link-dest` uses a locally-copied file as the basis
                   2675:    for an updated version, log this better when `--verbose` or `-i` is in
                   2676:    effect.
                   2677: 
                   2678:  - Fixed the accidental disabling of `--backup` during the `--delete-after`
                   2679:    processing.
                   2680: 
                   2681:  - Restored the ability to use the `--address` option in client mode (in
                   2682:    addition to its use in daemon mode).
                   2683: 
                   2684:  - Make sure that some temporary progress information from the delete
                   2685:    processing does not get left on the screen when it is followed by a newline.
                   2686: 
                   2687:  - When `--existing` skips a directory with extra verbosity, refer to it as a
                   2688:    `directory`, not a `file`.
                   2689: 
                   2690:  - When transferring a single file to a different-named file, any generator
                   2691:    messages that are source-file related no longer refer to the file by the
                   2692:    destination filename.
                   2693: 
                   2694:  - Fixed a bug where hard-linking a group of files might fail if the generator
                   2695:    hasn't created a needed destination directory yet.
                   2696: 
                   2697:  - Fixed a bug where a hard-linked group of files that is newly-linked to a
                   2698:    file in a `--link-dest` dir doesn't link the files from the rest of the
                   2699:    cluster.
                   2700: 
                   2701:  - When deleting files with the `--one-file-system` (`-x`) option set, rsync no
                   2702:    longer tries to remove files from inside a mount-point on the receiving
                   2703:    side. Also, we don't complain about being unable to remove the mount-point
                   2704:    dir.
                   2705: 
                   2706:  - Fixed a compatibility problem when using `--cvs-ignore` (`-C`) and sending
                   2707:    files to an older rsync without using `--delete`.
                   2708: 
                   2709:  - Make sure that a `- !` or `+ !` include/exclude pattern does not trigger the
                   2710:    list-clearing action that is reserved for `!`.
                   2711: 
                   2712:  - Avoid a timeout in the generator when the sender/receiver aren't handling
                   2713:    the generator's checksum output quickly enough.
                   2714: 
                   2715:  - Fixed the omission of some directories in the delete processing when
                   2716:    `--relative` (`-R`) was combined with a source path that had a trailing
                   2717:    slash.
                   2718: 
                   2719:  - Fixed a case where rsync would erroneously delete some files and then
                   2720:    re-transfer them when the options `--relative` (`-R`) and `--recursive`
                   2721:    (`-r`) were both enabled (along with `--delete`) and a source path had a
                   2722:    trailing slash.
                   2723: 
                   2724:  - Make sure that `--max-size` doesn't affect a device or a symlink.
                   2725: 
                   2726:  - Make sure that a system with a really small MAXPATHLEN does not cause the
                   2727:    buffers in `readfd_unbuffered()` to be too small to receive normal messages.
                   2728:    (This mainly affected Cygwin.)
                   2729: 
                   2730:  - If a source pathname ends with a filename of `..`, treat it as if `../` had
                   2731:    been specified (so that we don't copy files to the parent dir of the
                   2732:    destination).
                   2733: 
                   2734:  - If `--delete` is combined with a file-listing rsync command (i.e. no
                   2735:    transfer is happening), avoid outputting a warning that we couldn't delete
                   2736:    anything.
                   2737: 
                   2738:  - If `--stats` is specified with `--delete-after`, ensure that all the
                   2739:    `deleting` messages are output before the statistics.
                   2740: 
                   2741:  - Improved one `if` in the deletion code that was only checking errno for
                   2742:    ENOTEMPTY when it should have also been checking for EEXIST (for
                   2743:    compatibility with OS variations).
                   2744: 
                   2745: ### ENHANCEMENTS:
                   2746: 
                   2747:  - Added the `--only-write-batch=FILE` option that may be used (instead of
                   2748:    `--write-batch=FILE`) to create a batch file without doing any actual
                   2749:    updating of the destination. This allows you to divert all the file-updating
                   2750:    data away from a slow data link (as long as you are pushing the data to the
                   2751:    remote server when creating the batch).
                   2752: 
                   2753:  - When the generator is taking a long time to fill up its output buffer (e.g.
                   2754:    if the transferred files are few, small, or missing), it now periodically
                   2755:    flushes the output buffer so that the sender/receiver can get started on the
                   2756:    files sooner rather than later.
                   2757: 
                   2758:  - Improved the keep-alive code to handle a long silence between the sender and
                   2759:    the receiver that can occur when the sender is receiving the checksum data
                   2760:    for a large file.
                   2761: 
                   2762:  - Improved the auth-errors that are logged by the daemon to include some
                   2763:    information on why the authorization failed: wrong user, password mismatch,
                   2764:    etc. (The client-visible message is unchanged!)
                   2765: 
                   2766:  - Improved the client's handling of an `@ERROR` from a daemon so that it does
                   2767:    not complain about an unexpectedly closed socket (since we really did expect
                   2768:    the socket to close).
                   2769: 
                   2770:  - If the daemon can't open the log-file specified in rsyncd.conf, fall back to
                   2771:    using syslog and log an appropriate warning. This is better than what was
                   2772:    typically a totally silent (and fatal) failure (since a daemon is not
                   2773:    usually run with the `--no-detach` option that was necessary to see the
                   2774:    error on stderr).
                   2775: 
                   2776:  - The man pages now consistently refer to an rsync daemon as a `daemon`
                   2777:    instead of a `server` (to distinguish it from the server process in a
                   2778:    non-daemon transfer).
                   2779: 
                   2780:  - Made a small change to the rrsync script (restricted rsync -- in the support
                   2781:    dir) to make a read-only server reject all `--remove-*` options when sending
                   2782:    files (to future-proof it against the possibility of other similar options
                   2783:    being added at some point).
                   2784: 
                   2785: ### INTERNAL:
                   2786: 
                   2787:  - Rsync now calls `setlocale(LC_CTYPE, "")`. This enables isprint() to better
                   2788:    discern which filename characters need to be escaped in messages (which
                   2789:    should result in fewer escaped characters in some locales).
                   2790: 
                   2791:  - Improved the naming of the log-file open/reopen/close functions.
                   2792: 
                   2793:  - Removed some protocol-compatibility code that was only needed to help
                   2794:    someone running a pre-release of 2.6.4.
                   2795: 
                   2796: ### BUILD CHANGES:
                   2797: 
                   2798:  - Added configure option `--disable-locale` to disable any use of setlocale()
                   2799:    in the binary.
                   2800: 
                   2801:  - Fixed a bug in the `SUPPORT{,_HARD}_LINKS` #defines which prevented rsync
                   2802:    from being built without symlink or hard-link support.
                   2803: 
                   2804:  - Only #define `HAVE_REMSH` if it is going to be set to 1.
                   2805: 
                   2806:  - Configure now disables the use of mkstemp() under HP-UX (since they refuse
                   2807:    to fix its broken handling of large files).
                   2808: 
                   2809:  - Configure now explicitly checks for the lseek64() function so that the code
                   2810:    can use `HAVE_LSEEK64` instead of inferring lseek64()'s presence based on
                   2811:    the presence of the `off64_t` type.
                   2812: 
                   2813:  - Configure no longer mentions the change in the default remote-shell (from
                   2814:    rsh to ssh) that occurred for the 2.6.0 release.
                   2815: 
                   2816:  - Some minor enhancements to the test scripts.
                   2817: 
                   2818:  - Added a few new `*.diff` files to the patches dir, including a patch that
                   2819:    enables the optional copying of extended attributes.
                   2820: 
                   2821: ------------------------------------------------------------------------------
                   2822: <a name="2.6.4"></a>
                   2823: 
                   2824: # NEWS for rsync 2.6.4 (30 March 2005)
                   2825: 
                   2826: ## Changes in this version:
                   2827: 
                   2828: ### PROTOCOL NUMBER:
                   2829: 
                   2830:  - The protocol number was changed to 29.
                   2831: 
                   2832: ### OUTPUT CHANGES:
                   2833: 
                   2834:  - When rsync deletes a directory and outputs a verbose message about it, it
                   2835:    now appends a trailing slash to the name instead of (only sometimes)
                   2836:    outputting a preceding "directory " string.
                   2837: 
                   2838:  - The `--stats` output will contain file-list time-statistics if both sides
                   2839:    are 2.6.4, or if the local side is 2.6.4 and the files are being pushed
                   2840:    (since the stats come from the sending side).  (Requires protocol 29 for a
                   2841:    pull.)
                   2842: 
                   2843:  - The `%o` (operation) log-format escape now has a third value (besides `send`
                   2844:    and `recv`): `del.` (with trailing dot to make it 4 chars).  This changes
                   2845:    the way deletions are logged in the daemon's log file.
                   2846: 
                   2847:  - When the `--log-format` option is combined with `--verbose`, rsync now
                   2848:    avoids outputting the name of the file twice in most circumstances.  As long
                   2849:    as the `--log-format` item does not refer to any post-transfer items (such
                   2850:    as %b or %c), the `--log-format` message is output prior to the transfer, so
                   2851:    `--verbose` is now the equivalent of a `--log-format` of '%n%L' (which
                   2852:    outputs the name and any link info). If the log output must occur after the
                   2853:    transfer to be complete, the only time the name is also output prior to the
                   2854:    transfer is when `--progress` was specified (so that the name will precede
                   2855:    the progress stats, and the full `--log-format` output will come after).
                   2856: 
                   2857:  - Non-printable characters in filenames are replaced with a '?' to avoid
                   2858:    corrupting the screen or generating empty lines in the output.
                   2859: 
                   2860: ### BUG FIXES:
                   2861: 
                   2862:  - Restore the list-clearing behavior of `!` in a .cvsignore file (2.6.3 was
                   2863:    only treating it as a special token in an rsync include/exclude file).
                   2864: 
                   2865:  - The combination of `--verbose` and `--dry-run` now mentions the full list of
                   2866:    changes that would be output without `--dry-run`.
                   2867: 
                   2868:  - Avoid a mkdir warning when removing a directory in the destination that
                   2869:    already exists in the `--backup-dir`.
                   2870: 
                   2871:  - An OS that has a binary mode for its files (such as Cygwin) needed
                   2872:    `setmode(fd, O_BINARY)` called on the temp-file we opened with mkstemp().
                   2873:    (Fix derived from Cygwin's 2.6.3 rsync package.)
                   2874: 
                   2875:  - Fixed a potential hang when verbosity is high, the client side is the
                   2876:    sender, and the file-list is large.
                   2877: 
                   2878:  - Fixed a potential protocol-corrupting bug where the generator could merge a
                   2879:    message from the receiver into the middle of a multiplexed packet of data if
                   2880:    only part of that data had been written out to the socket when the message
                   2881:    from the generator arrived.
                   2882: 
                   2883:  - We now check if the OS doesn't support using mknod() for creating FIFOs and
                   2884:    sockets, and compile-in some compatibility code using mkfifo() and socket()
                   2885:    when necessary.
                   2886: 
                   2887:  - Fixed an off-by-one error in the handling of `--max-delete=N`. Also, if the
                   2888:    `--max-delete` limit is exceeded during a run, we now output a warning about
                   2889:    this at the end of the run and exit with a new error code (25).
                   2890: 
                   2891:  - One place in the code wasn't checking if fork() failed.
                   2892: 
                   2893:  - The `ignore nonreadable` daemon parameter used to erroneously affect
                   2894:    readable symlinks that pointed to a non-existent file.
                   2895: 
                   2896:  - If the OS does not have lchown() and a chown() of a symlink will affect the
                   2897:    referent of a symlink (as it should), we no longer try to set the user and
                   2898:    group of a symlink.
                   2899: 
                   2900:  - The generator now properly runs the hard-link loop and the dir-time
                   2901:    rewriting loop after we're sure that the redo phase is complete.
                   2902: 
                   2903:  - When `--backup` was specified with `--partial-dir=DIR`, where DIR is a
                   2904:    relative path, the backup code was erroneously trying to backup a file that
                   2905:    was put into the partial-dir.
                   2906: 
                   2907:  - If a file gets resent in a single transfer and the `--backup` option is
                   2908:    enabled along with `--inplace`, rsync no longer performs a duplicate backup
                   2909:    (it used to overwrite the first backup with the failed file).
                   2910: 
                   2911:  - One call to `flush_write_file()` was not being checked for an error.
                   2912: 
                   2913:  - The `--no-relative` option was not being sent from the client to a server
                   2914:    sender.
                   2915: 
                   2916:  - If an rsync daemon specified `dont compress = ...` for a file and the client
                   2917:    tried to specify `--compress`, the libz code was not handling a compression
                   2918:    level of 0 properly. This could cause a transfer failure if the block-size
                   2919:    for a file was large enough (e.g. rsync might have exited with an error for
                   2920:    large files).
                   2921: 
                   2922:  - Fixed a bug that would sometimes surface when using `--compress` and sending
                   2923:    a file with a block-size larger than 64K (either manually specified, or
                   2924:    computed due to the file being really large). Prior versions of rsync would
                   2925:    sometimes fail to decompress the data properly, and thus the transferred
                   2926:    file would fail its verification.
                   2927: 
                   2928:  - If a daemon can't open the specified log file (i.e. syslog is not being
                   2929:    used), die without crashing. We also output an error about the failure on
                   2930:    stderr (which will only be seen if `--no-detach` was specified) and exit
                   2931:    with a new error code (6).
                   2932: 
                   2933:  - A local transfer no longer duplicates all its include/exclude options (since
                   2934:    the forked process already has a copy of the exclude list, there's no need
                   2935:    to send them a set of duplicates).
                   2936: 
                   2937:  - The output of the items that are being updated by the generator (dirs,
                   2938:    symlinks, devices) is now intermingled in the proper order with the output
                   2939:    from the items that the receiver is updating (regular files) when pulling.
                   2940:    This misordering was particularly bad when `--progress` was specified.
                   2941:    (Requires protocol 29.)
                   2942: 
                   2943:  - When `--timeout` is specified, lulls that occur in the transfer while the
                   2944:    generator is doing work that does not generate socket traffic (looking for
                   2945:    changed files, deleting files, doing directory-time touch-ups, etc.) will
                   2946:    cause a new keep-alive packet to be sent that should keep the transfer going
                   2947:    as long as the generator continues to make progress. (Requires protocol 29.)
                   2948: 
                   2949:  - The stat size of a device is not added to the total file size of the items
                   2950:    in the transfer (the size might be undefined on some OSes).
                   2951: 
                   2952:  - Fixed a problem with refused-option messages sometimes not making it back to
                   2953:    the client side when a remote `--files-from` was in effect and the daemon
                   2954:    was the receiver.
                   2955: 
                   2956:  - The `--compare-dest` option was not updating a file that differed in (the
                   2957:    preserved) attributes from the version in the compare-dest DIR.
                   2958: 
                   2959:  - When rsync is copying files into a write-protected directory, fixed the
                   2960:    change-report output for the directory so that we don't report an identical
                   2961:    directory as changed.
                   2962: 
                   2963: ### ENHANCEMENTS:
                   2964: 
                   2965:  - Rsync now supports popt's option aliases, which means that you can use
                   2966:    /etc/popt and/or ~/.popt to create your own option aliases.
                   2967: 
                   2968:  - Added the `--delete-during` (`--del`) option which will delete files from
                   2969:    the receiving side incrementally as each directory in the transfer is being
                   2970:    processed. This makes it more efficient than the default,
                   2971:    before-the-transfer behavior, which is now also available as
                   2972:    `--delete-before` (and is still the default `--delete-WHEN` option that will
                   2973:    be chosen if `--delete` or `--delete-excluded` is specified without a
                   2974:    `--delete-WHEN` choice). All the `--del*` options infer `--delete`, so an
                   2975:    rsync daemon that refuses `delete` will still refuse to allow any
                   2976:    file-deleting options (including the new `--remove-sent-files` option).
                   2977: 
                   2978:  - All the `--delete-WHEN` options are now more memory efficient: Previously an
                   2979:    duplicate set of file-list objects was created on the receiving side for the
                   2980:    entire destination hierarchy. The new algorithm only creates one directory
                   2981:    of objects at a time (for files inside the transfer).
                   2982: 
                   2983:  - Added the `--copy-dest` option, which works like `--link-dest` except that
                   2984:    it locally copies identical files instead of hard-linking them.
                   2985: 
                   2986:  - Added support for specifying multiple `--compare-dest`, `--copy-dest`, or
                   2987:    `--link-dest` options, but only of a single type. (Promoted from the patches
                   2988:    dir and enhanced.) (Requires protocol 29.)
                   2989: 
                   2990:  - Added the `--max-size` option. (Promoted from the patches dir.)
                   2991: 
                   2992:  - The daemon-mode options are now separated from the normal rsync options so
                   2993:    that they can't be mixed together. This makes it impossible to start a
                   2994:    daemon that has improper default option values (which could cause problems
                   2995:    when a client connects, such as hanging or crashing).
                   2996: 
                   2997:  - The `--bwlimit` option may now be used in combination with `--daemon` to
                   2998:    specify both a default value for the daemon side and a value that cannot be
                   2999:    exceeded by a user-specified `--bwlimit` option.
                   3000: 
                   3001:  - Added the `port` parameter to the rsyncd.conf file. (Promoted from the
                   3002:    patches dir.) Also added `address`. The command-line options take precedence
                   3003:    over a config-file option, as expected.
                   3004: 
                   3005:  - In `_exit_cleanup()`: when we are exiting with a partially-received file, we
                   3006:    now flush any data in the write-cache before closing the partial file.
                   3007: 
                   3008:  - The `--inplace` support was enhanced to work with `--compare-dest`,
                   3009:    `--link-dest`, and (the new) `--copy-dest` options. (Requires protocol 29.)
                   3010: 
                   3011:  - Added the `--dirs` (`-d`) option for an easier way to copy directories
                   3012:    without recursion. Any directories that are encountered are created on the
                   3013:    destination. Specifying a directory with a trailing slash copies its
                   3014:    immediate contents to the destination.
                   3015: 
                   3016:  - The `--files-from` option now implies `--dirs` (`-d`).
                   3017: 
                   3018:  - Added the `--list-only` option, which is mainly a way for the client to put
                   3019:    the server into listing mode without needing to resort to any internal
                   3020:    option kluges (e.g. the age-old use of `-r --exclude='/*/*'` for a
                   3021:    non-recursive listing). This option is used automatically (behind the
                   3022:    scenes) when a modern rsync speaks to a modern daemon, but may also be
                   3023:    specified manually if you want to force the use of the `--list-only` option
                   3024:    over a remote-shell connection.
                   3025: 
                   3026:  - Added the `--omit-dir-times` (`-O`) option, which will avoid updating the
                   3027:    modified time for directories when `--times` was specified. This option will
                   3028:    avoid an extra pass through the file-list at the end of the transfer (to
                   3029:    tweak all the directory times), which may provide an appreciable speedup for
                   3030:    a really large transfer. (Promoted from the patches dir.)
                   3031: 
                   3032:  - Added the `--filter` (`-f`) option and its helper option, `-F`. Filter rules
                   3033:    are an extension to the existing include/exclude handling that also supports
                   3034:    nested filter files as well as per-directory filter files (like .cvsignore,
                   3035:    but with full filter-rule parsing).  This new option was chosen in order to
                   3036:    ensure that all existing include/exclude processing remained 100% compatible
                   3037:    with older versions. Protocol 29 is needed for full filter-rule support, but
                   3038:    backward-compatible rules work with earlier protocol versions.  (Promoted
                   3039:    from the patches dir and enhanced.)
                   3040: 
                   3041:  - Added the `--delay-updates` option that puts all updated files into a
                   3042:    temporary directory (by default `.~tmp~`, but settable via the
                   3043:    `--partial-dir=DIR` option) until the end of the transfer. This makes the
                   3044:    updates a little more atomic for a large transfer.
                   3045: 
                   3046:  - If rsync is put into the background, any output from `--progress` is
                   3047:    reduced.
                   3048: 
                   3049:  - Documented the `max verbosity` setting for rsyncd.conf. (This setting was
                   3050:    added a couple releases ago, but left undocumented.)
                   3051: 
                   3052:  - The sender and the generator now double-check the file-list index they are
                   3053:    given, and refuse to try to do a file transfer on a non-file index (since
                   3054:    that would indicate that something had gone very wrong).
                   3055: 
                   3056:  - Added the `--itemize-changes` (`-i`) option, which is a way to output a more
                   3057:    detailed list of what files changed and in what way. The effect is the same
                   3058:    as specifying a `--log-format` of `%i %n%L` (see both the rsync and
                   3059:    rsyncd.conf manpages). Works with `--dry-run` too.
                   3060: 
                   3061:  - Added the `--fuzzy` (`-y`) option, which attempts to find a basis file for a
                   3062:    file that is being created from scratch. The current algorithm only looks in
                   3063:    the destination directory for the created file, but it does attempt to find
                   3064:    a match based on size/mod-time (in case the file was renamed with no other
                   3065:    changes) as well as based on a fuzzy name-matching algorithm. This option
                   3066:    requires protocol 29 because it needs the new file-sorting order. (Promoted
                   3067:    from patches dir and enhanced.) (Requires protocol 29.)
                   3068: 
                   3069:  - Added the `--remove-sent-files` option, which lets you move files between
                   3070:    systems.
                   3071: 
                   3072:  - The hostname in HOST:PATH or HOST::PATH may now be an IPv6 literal enclosed
                   3073:    in '[' and ']' (e.g. `[::1]`). (We already allowed IPv6 literals in the
                   3074:    rsync://HOST:PORT/PATH format.)
                   3075: 
                   3076:  - When rsync recurses to build the file list, it no longer keeps open one or
                   3077:    more directory handles from the dir's parent dirs.
                   3078: 
                   3079:  - When building under windows, the default for `--daemon` is now to avoid
                   3080:    detaching, requiring the new `--detach` option to force rsync to detach.
                   3081: 
                   3082:  - The `--dry-run` option can now be combined with either `--write-batch` or
                   3083:    `--read-batch`, allowing you to run a do-nothing test command to see what
                   3084:    would happen without `--dry-run`.
                   3085: 
                   3086:  - The daemon's `read only` config item now sets an internal `read_only`
                   3087:    variable that makes extra sure that no write/delete calls on the read-only
                   3088:    side can succeed.
                   3089: 
                   3090:  - The log-format % escapes can now have a numeric field width in between the %
                   3091:    and the escape letter (e.g. `%-40n %08p`).
                   3092: 
                   3093:  - Improved the option descriptions in the `--help` text.
                   3094: 
                   3095: ### SUPPORT FILES:
                   3096: 
                   3097:  - Added atomic-rsync to the support dir: a perl script that will transfer some
                   3098:    files using rsync, and then move the updated files into place all at once at
                   3099:    the end of the transfer. Only works when pulling, and uses `--link-dest` and
                   3100:    a parallel hierarchy of files to effect its update.
                   3101: 
                   3102:  - Added mnt-excl to the support dir: a perl script that takes the /proc/mounts
                   3103:    file and translates it into a set of excludes that will exclude all mount
                   3104:    points (even mapped mounts to the same disk). The excludes are made relative
                   3105:    to the specified source dir and properly anchored.
                   3106: 
                   3107:  - Added savetransfer.c to the support dir: a C program that can make a copy of
                   3108:    all the data that flows over the wire. This lets you test for data
                   3109:    corruption (by saving the data on both the sending side and the receiving
                   3110:    side) and provides one way to debug a protocol error.
                   3111: 
                   3112:  - Added rrsync to the support dir: this is an updated version of Joe Smith's
                   3113:    restricted rsync perl script. This helps to ensure that only certain rsync
                   3114:    commands can be run by an ssh invocation.
                   3115: 
                   3116: ### INTERNAL:
                   3117: 
                   3118:  - Added better checking of the checksum-header values that come over the
                   3119:    socket.
                   3120: 
                   3121:  - Merged a variety of file-deleting functions into a single function so that
                   3122:    it is easier to maintain.
                   3123: 
                   3124:  - Improved the type of some variables (particularly blocksize vars) for
                   3125:    consistency and proper size.
                   3126: 
                   3127:  - Got rid of the uint64 type (which we didn't need).
                   3128: 
                   3129:  - Use a slightly more compatible set of core #include directives.
                   3130: 
                   3131:  - Defined int32 in a way that ensures that the build dies if we can't find a
                   3132:    variable with at least 32 bits.
                   3133: 
                   3134: ### PROTOCOL DIFFERENCES FOR VERSION 29:
                   3135: 
                   3136:  - A 16-bit flag-word is transmitted after every file-list index. This
                   3137:    indicates what is changing between the sender and the receiver. The
                   3138:    generator now transmits an index and a flag-word to indicate when dirs and
                   3139:    symlinks have changed (instead of producing a message), which makes the
                   3140:    outputting of the information more consistent and less prone to screen
                   3141:    corruption (because the local receiver/sender is now outputting all the
                   3142:    file-change info messages).
                   3143: 
                   3144:  - If a file is being hard-linked, the `ITEM_XNAME_FOLLOWS` bit is enabled in
                   3145:    the flag-word and the name of the file that was linked immediately follows
                   3146:    in vstring format (see below).
                   3147: 
                   3148:  - If a file is being transferred with an alternate-basis file, the
                   3149:    `ITEM_BASIS_TYPE_FOLLOWS` bit is enabled in the flag-word and a single byte
                   3150:    follows, indicating what type of basis file was chosen. If that indicates
                   3151:    that a fuzzy-match was selected, the `ITEM_XNAME_FOLLOWS` bit is set in the
                   3152:    flag-word and the name of the match in vstring format follows the basis
                   3153:    byte. A vstring is a variable length string that has its size written prior
                   3154:    to the string, and no terminating null.  If the string is from 1-127 bytes,
                   3155:    the length is a single byte. If it is from 128-32767 bytes, the length is
                   3156:    written as ((len >> 8) | 0x80) followed by (len % 0x100).
                   3157: 
                   3158:  - The sending of exclude names is done using filter-rule syntax. This means
                   3159:    that all names have a prefixed rule indicator, even excludes (which used to
                   3160:    be sent as a bare pattern, when possible). The `-C` option will include the
                   3161:    per-dir .cvsignore merge file in the list of filter rules so it is
                   3162:    positioned correctly (unlike in some older transfer scenarios).
                   3163: 
                   3164:  - Rsync sorts the filename list in a different way: it sorts the subdir names
                   3165:    after the non-subdir names for each dir's contents, and it always puts a
                   3166:    dir's contents immediately after the dir's name in the list. (Previously an
                   3167:    item named `foo.txt` would sort in between directory `foo/` and `foo/bar`.)
                   3168: 
                   3169:  - When talking to a protocol 29 rsync daemon, a list-only request is able to
                   3170:    note this before the options are sent over the wire and the new
                   3171:    `--list-only` option is included in the options.
                   3172: 
                   3173:  - When the `--stats` bytes are sent over the wire (or stored in a batch), they
                   3174:    now include two elapsed-time values: one for how long it took to build the
                   3175:    file-list, and one for how long it took to send it over the wire (each
                   3176:    expressed in thousandths of a second).
                   3177: 
                   3178:  - When `--delete-excluded` is specified with some filter rules (AKA excludes),
                   3179:    a client sender will now initiate a send of the rules to the receiver (older
                   3180:    protocols used to omit the sending of excludes in this situation since there
                   3181:    were no receiver-specific rules that survived `--delete-excluded` back
                   3182:    then). Note that, as with all the filter-list sending, only items that are
                   3183:    significant to the other side will actually be sent over the wire, so the
                   3184:    filter-rule list that is sent in this scenario is often empty.
                   3185: 
                   3186:  - An index equal to the file-list count is sent as a keep-alive packet from
                   3187:    the generator to the sender, which then forwards it on to the receiver. This
                   3188:    normally invalid index is only a valid keep-alive packet if the 16-bit
                   3189:    flag-word that follows it contains a single bit (`ITEM_IS_NEW`, which is
                   3190:    normally an illegal flag to appear alone).
                   3191: 
                   3192:  - A protocol-29 batch file includes a bit for the setting of the `--dirs`
                   3193:    option and for the setting of the `--compress` option. Also, the shell
                   3194:    script created by `--write-batch` will use the `--filter` option instead of
                   3195:    `--exclude-from` to capture any filter rules.
                   3196: 
                   3197: ### BUILD CHANGES:
                   3198: 
                   3199:  - Handle an operating system that use mkdev() in place of makedev().
                   3200: 
                   3201:  - Improved configure to better handle cross-compiling.
                   3202: 
                   3203: ------------------------------------------------------------------------------
                   3204: <a name="2.6.3"></a>
                   3205: 
                   3206: # NEWS for rsync 2.6.3 (30 Sep 2004)
                   3207: 
                   3208: ## Changes in this version:
                   3209: 
                   3210: ### SECURITY FIXES:
                   3211: 
                   3212:  - A bug in the `sanitize_path` routine (which affects a non-chrooted rsync
                   3213:    daemon) could allow a user to craft a pathname that would get transformed
                   3214:    into an absolute path for certain options (but not for file-transfer names).
                   3215:    If you're running an rsync daemon with chroot disabled, **please upgrade**,
                   3216:    ESPECIALLY if the user privs you run rsync under is anything above `nobody`.
                   3217: 
                   3218:    OUTPUT CHANGES (ATTN: those using a script to parse the verbose output):
                   3219: 
                   3220:  - Please note that the 2-line footer (output when verbose) now uses the term
                   3221:    `sent` instead of `wrote` and `received` instead of `read`. If you are not
                   3222:    parsing the numeric values out of this footer, a script would be better off
                   3223:    using the empty line prior to the footer as the indicator that the verbose
                   3224:    output is over.
                   3225: 
                   3226:  - The output from the `--stats` option was similarly affected to change
                   3227:    `written` to `sent` and `read` to `received`.
                   3228: 
                   3229:  - Rsync ensures that a filename that contains a newline gets mentioned with
                   3230:    each newline transformed into a question mark (which prevents a filename
                   3231:    from causing an empty line to be output).
                   3232: 
                   3233:  - The `backed up ...` message that is output when at least 2 `--verbose`
                   3234:    options are specified is now the same both with and without the
                   3235:    `--backup-dir` option.
                   3236: 
                   3237: ### BUG FIXES:
                   3238: 
                   3239:  - Fixed a crash bug that might appear when `--delete` was used and multiple
                   3240:    source directories were specified.
                   3241: 
                   3242:  - Fixed a 32-bit truncation of the file length when generating the checksums.
                   3243: 
                   3244:  - The `--backup` code no longer attempts to create some directories over and
                   3245:    over again (generating warnings along the way).
                   3246: 
                   3247:  - Fixed a bug in the reading of the secrets file (by the daemon) and the
                   3248:    password file (by the client): the files no longer need to be terminated by
                   3249:    a newline for their content to be read in.
                   3250: 
                   3251:  - If a file has a read error on the sending side or the reconstructed data
                   3252:    doesn't match the expected checksum (perhaps due to the basis file changing
                   3253:    during the transfer), the receiver will no longer retain the resulting file
                   3254:    unless the `--partial` option was specified.  (Note: for the read-error
                   3255:    detection to work, neither side can be older than 2.6.3 -- older receivers
                   3256:    will always retain the file, and older senders don't tell the receiver that
                   3257:    the file had a read error.)
                   3258: 
                   3259:  - If a file gets resent in a single transfer and the `--backup` option is
                   3260:    enabled, rsync no longer performs a duplicate backup (it used to overwrite
                   3261:    the original file in the backup area).
                   3262: 
                   3263:  - Files specified in the daemon's `exclude` or `exclude from` config items are
                   3264:    now excluded from being uploaded (assuming that the module allows uploading
                   3265:    at all) in addition to the old download exclusion.
                   3266: 
                   3267:  - Got rid of a potential hang in the receiver when near the end of a phase.
                   3268: 
                   3269:  - When using `--backup` without a `--backup-dir`, rsync no longer preserves
                   3270:    the modify time on directories. This avoids confusing NFS.
                   3271: 
                   3272:  - When `--copy-links` (`-L`) is specified, we now output a separate error for
                   3273:    a symlink that has no referent instead of claiming that a file `vanished`.
                   3274: 
                   3275:  - The `--copy-links` (`-L`) option no longer has the side-effect of telling
                   3276:    the receiving side to follow symlinks. See the `--keep-dirlinks` option
                   3277:    (mentioned below) for a way to specify that behavior.
                   3278: 
                   3279:  - Error messages from the daemon server's option-parsing (such as refused
                   3280:    options) are now successfully transferred back to the client (the server
                   3281:    used to fail to send the message because the socket wasn't in the right
                   3282:    state for the message to get through).
                   3283: 
                   3284:  - Most transfer errors that occur during a daemon transfer are now returned to
                   3285:    the user in addition to being logged (some messages are intended to be
                   3286:    daemon-only and are not affected by this).
                   3287: 
                   3288:  - Fixed a bug in the daemon authentication code when using one of the
                   3289:    batch-processing options.
                   3290: 
                   3291:  - We try to work around some buggy IPv6 implementations that fail to implement
                   3292:    `IPV6_V6ONLY`. This should fix the `address in use` error that some daemons
                   3293:    get when running on an OS with a buggy IPv6 implementation. Also, if the new
                   3294:    code gets this error, we might suggest that the user specify `--ipv4` or
                   3295:    `--ipv6` (if we think it will help).
                   3296: 
                   3297:  - When the remote rsync dies, make a better effort to recover any error
                   3298:    messages it may have sent before dying (the local rsync used to just die
                   3299:    with a socket-write error).
                   3300: 
                   3301:  - When using `--delete` and a `--backup-dir` that contains files that are
                   3302:    hard-linked to their destination equivalents, rsync now makes sure that
                   3303:    removed files really get removed (avoids a really weird rename() behavior).
                   3304: 
                   3305:  - Avoid a bogus run-time complaint about a lack of 64-bit integers when the
                   3306:    int64 type is defined as an `off_t` and it actually has 64-bits.
                   3307: 
                   3308:  - Added a configure check for open64() without mkstemp64() so that we can
                   3309:    avoid using mkstemp() when such a combination is encountered.  This bypasses
                   3310:    a problem writing out large temp files on OSes such as AIX and HP-UX.
                   3311: 
                   3312:  - Fixed an age-old crash problem with `--read-batch` on a local copy (rsync
                   3313:    was improperly assuming `--whole-file` for the local copy).
                   3314: 
                   3315:  - When `--dry-run` (`-n`) is used and the destination directory does not
                   3316:    exist, rsync now produces a correct report of files that would be sent
                   3317:    instead of dying with a chdir() error.
                   3318: 
                   3319:  - Fixed a bug that could cause a slow-to-connect rsync daemon to die with an
                   3320:    error instead of waiting for the connection to finish.
                   3321: 
                   3322:  - Fixed an ssh interaction that could cause output to be lost when the user
                   3323:    chose to combine the output of rsync's stdout and stderr (e.g.  using the
                   3324:    `2>&1`).
                   3325: 
                   3326:  - Fixed an option-parsing bug when `--files-from` got passed to a daemon.
                   3327: 
                   3328: ### ENHANCEMENTS:
                   3329: 
                   3330:  - Added the `--partial-dir=DIR` option that lets you specify where to
                   3331:    (temporarily) put a partially transferred file (instead of overwriting the
                   3332:    destination file). E.g. `--partial-dir=.rsync-partial` Also added support
                   3333:    for the `RSYNC_PARTIAL_DIR` environment variable that, when found,
                   3334:    transforms a regular `--partial` option (such as the convenient `-P` option)
                   3335:    into one that also specifies a directory.
                   3336: 
                   3337:  - Added `--keep-dirlinks` (`-K`), which allows you to symlink a directory onto
                   3338:    another partition on the receiving side and have rsync treat it as matching
                   3339:    a normal directory from the sender.
                   3340: 
                   3341:  - Added the `--inplace` option that tells rsync to write each destination file
                   3342:    without using a temporary file. The matching of existing data in the
                   3343:    destination file can be severely limited by this, but there are also cases
                   3344:    where this is more efficient (such as appending data).  Use only when needed
                   3345:    (see the man page for more details).
                   3346: 
                   3347:  - Added the `write only` option for the daemon's config file.
                   3348: 
                   3349:  - Added long-option names for `-4` and `-6` (namely `--ipv4` and `--ipv6`) and
                   3350:    documented all these options in the man page.
                   3351: 
                   3352:  - Improved the handling of the `--bwlimit` option so that it's less bursty,
                   3353:    more accurate, and works properly over a larger range of values.
                   3354: 
                   3355:  - The rsync daemon-over-ssh code now looks for `SSH_CONNECTION` and
                   3356:    `SSH2_CLIENT` in addition to `SSH_CLIENT` to figure out the IP address.
                   3357: 
                   3358:  - Added the `--checksum-seed=N` option for advanced users.
                   3359: 
                   3360:  - Batch writing/reading has a brand-new implementation that is simpler, fixes
                   3361:    a few weird problems with the old code (such as no longer sprinkling the
                   3362:    batch files into different dirs or even onto different systems), and is much
                   3363:    less intrusive into the code (making it easier to maintain for the future).
                   3364:    The new code generates just one data file instead of three, which makes it
                   3365:    possible to read the batch on stdin via a remote shell. Also, the old
                   3366:    requirement of forcing the same fixed checksum-seed for all batch processing
                   3367:    has been removed.
                   3368: 
                   3369:  - If an rsync daemon has a module set with `list = no` (which hides its
                   3370:    presence in the list of available modules), a user that fails to
                   3371:    authenticate gets the same `unknown module` error that they would get if the
                   3372:    module were actually unknown (while still logging the real error to the
                   3373:    daemon's log file). This prevents fishing for module names.
                   3374: 
                   3375:  - The daemon's `refuse options` config item now allows you to match option
                   3376:    names using wildcards and/or the single-letter option names.
                   3377: 
                   3378:  - Each transferred file now gets its permissions and modified-time updated
                   3379:    before the temp-file gets moved into place. Previously, the finished file
                   3380:    would have a very brief window where its permissions disallowed all group
                   3381:    and world access.
                   3382: 
                   3383:  - Added the ability to parse a literal IPv6 address in an `rsync:` URL (e.g.
                   3384:    rsync://[2001:638:500:101::21]:873/module/dir).
                   3385: 
                   3386:  - The daemon's wildcard expanding code can now handle more than 1000 filenames
                   3387:    (it's now limited by memory instead of having a hard-wired limit).
                   3388: 
                   3389: ### INTERNAL:
                   3390: 
                   3391:  - Some cleanup in the exclude code has saved some per-exclude memory and made
                   3392:    the code easier to maintain.
                   3393: 
                   3394:  - Improved the argv-overflow checking for a remote command that has a lot of
                   3395:    args.
                   3396: 
                   3397:  - Use rsyserr() in the various places that were still calling rprintf() with
                   3398:    strerror() as an arg.
                   3399: 
                   3400:  - If an rsync daemon is listening on multiple sockets (to handle both IPv4 and
                   3401:    IPv6 to a single port), we now close all the unneeded file handles after we
                   3402:    accept a connection (we used to close just one of them).
                   3403: 
                   3404:  - Optimized the handling of larger block sizes (rsync used to slow to a crawl
                   3405:    if the block size got too large).
                   3406: 
                   3407:  - Optimized away a loop in `hash_search()`.
                   3408: 
                   3409:  - Some improvements to the `sanitize_path()` and `clean_fname()` functions
                   3410:    makes them more efficient and produce better results (while still being
                   3411:    compatible with the file-name cleaning that gets done on both sides when
                   3412:    sending the file-list).
                   3413: 
                   3414:  - Got rid of `alloc_sanitize_path()` after adding a destination-buffer arg to
                   3415:    `sanitize_path()` made it possible to put all the former's functionality
                   3416:    into the latter.
                   3417: 
                   3418:  - The file-list that is output when at least 4 verbose options are specified
                   3419:    reports the uid value on the sender even when rsync is not running as root
                   3420:    (since we might be sending to a root receiver).
                   3421: 
                   3422: ### BUILD CHANGES:
                   3423: 
                   3424:  - Added a `gen` target to rebuild most of the generated files, including
                   3425:    configure, config.h.in, the man pages, and proto.h.
                   3426: 
                   3427:  - If `make proto` doesn't find some changes in the prototypes, the proto.h
                   3428:    file is left untouched (its time-stamp used to always be updated).
                   3429: 
                   3430:  - The variable `$STRIP` (that is optionally set by the install-strip target's
                   3431:    rule) was changed to `$INSTALL_STRIP` because some systems have `$STRIP`
                   3432:    already set in the environment.
                   3433: 
                   3434:  - Fixed a build problem when `SUPPORT_HARD_LINKS` isn't defined.
                   3435: 
                   3436:  - When cross-compiling, the gettimeofday() function is now assumed to be a
                   3437:    modern version that takes two-args (since we can't test it).
                   3438: 
                   3439: ### DEVELOPER RELATED:
                   3440: 
                   3441:  - The scripts in the testsuite dir were cleaned up a bit and a few new tests
                   3442:    added.
                   3443: 
                   3444:  - Some new diffs were added to the patches dir, and some accepted ones were
                   3445:    removed.
                   3446: 
                   3447: ------------------------------------------------------------------------------
                   3448: <a name="2.6.2"></a>
                   3449: 
                   3450: # NEWS for rsync 2.6.2 (30 Apr 2004)
                   3451: 
                   3452: ## Changes in this version:
                   3453: 
                   3454: ### BUG FIXES:
                   3455: 
                   3456:  - Fixed a major bug in the sorting of the filenames when `--relative` is used
                   3457:    for some sources (just sources such as `/` and `/*` were affected). This fix
                   3458:    ensures that we ask for the right file-list item when requesting changes
                   3459:    from the sender.
                   3460: 
                   3461:  - Rsync now checks the return value of the close() function to better report
                   3462:    disk-full problems on an NFS file system.
                   3463: 
                   3464:  - Restored the old daemon-server behavior of logging error messages rather
                   3465:    than returning them to the user. (A better long-term fix will be sought in
                   3466:    the future.)
                   3467: 
                   3468:  - An obscure uninitialized-variable bug was fixed in the uid/gid code. (This
                   3469:    bug probably had no ill effects.)
                   3470: 
                   3471: ### BUILD CHANGES:
                   3472: 
                   3473:  - Got rid of the configure check for sys/sysctl.h (it wasn't used and was
                   3474:    causing a problem on some systems). Also improved the
                   3475:    broken-largefile-locking test to try to avoid failure due to an NFS
                   3476:    build-dir.
                   3477: 
                   3478:  - Fixed a compile problem on systems that don't define `AI_NUMERICHOST`.
                   3479: 
                   3480:  - Fixed a compile problem in the popt source for compilers that don't support
                   3481:    `__attribute__`.
                   3482: 
                   3483: ### DEVELOPER RELATED:
                   3484: 
                   3485:  - Improved the testsuite's `merge` test to work on OSF1.
                   3486: 
                   3487:  - Two new diffs were added to the patches dir.
                   3488: 
                   3489: ------------------------------------------------------------------------------
                   3490: <a name="2.6.1"></a>
                   3491: 
                   3492: # NEWS for rsync 2.6.1 (26 Apr 2004)
                   3493: 
                   3494: ## Changes in this version:
                   3495: 
                   3496: ### PROTOCOL NUMBER:
                   3497: 
                   3498:  - The protocol number was changed to 28.
                   3499: 
                   3500: ### SECURITY FIXES:
                   3501: 
                   3502:  - Paths sent to an rsync daemon are more thoroughly sanitized when chroot is
                   3503:    not used. If you're running a non-read-only rsync daemon with chroot
                   3504:    disabled, **please upgrade**, ESPECIALLY if the user privs you run rsync
                   3505:    under is anything above `nobody`.
                   3506: 
                   3507: ### ENHANCEMENTS:
                   3508: 
                   3509:  - Lower memory use, more optimal transfer of data over the socket, and lower
                   3510:    CPU usage (see the INTERNAL section for details).
                   3511: 
                   3512:  - The `RSYNC_PROXY` environment variable can now contain a `USER:PASS@` prefix
                   3513:    before the `HOST:PORT` information.  (Bardur Arantsson)
                   3514: 
                   3515:  - The `--progress` output now mentions how far along in the transfer we are,
                   3516:    including both a count of files transferred and a percentage of the total
                   3517:    file-count that we've processed. It also shows better
                   3518:    current-rate-of-transfer and remaining-transfer-time values.
                   3519: 
                   3520:  - Documentation changes now attempt to describe some often misunderstood
                   3521:    features more clearly.
                   3522: 
                   3523: ### BUG FIXES:
                   3524: 
                   3525:  - When `-x` (`--one-file-system`) is combined with `-L` (`--copy-links`) or
                   3526:    `--copy-unsafe-links,` no symlinked files are skipped, even if the referent
                   3527:    file is on a different filesystem.
                   3528: 
                   3529:  - The `--link-dest` code now works properly for a non-root user when (1) the
                   3530:    UIDs of the source and destination differ and `-o` was specified, or (2)
                   3531:    when the group of the source can't be used on the destination and `-g` was
                   3532:    specified.
                   3533: 
                   3534:  - Fixed a bug in the handling of `-H` (hard-links) that might cause the
                   3535:    expanded PATH/NAME value of the current item to get overwritten (due to an
                   3536:    expanded-name caching bug).
                   3537: 
                   3538:  - We now reset the `new data has been sent` flag at the start of each file we
                   3539:    send. This makes sure that an interrupted transfer with the `--partial`
                   3540:    option set doesn't keep a shorter temp file than the current basis file when
                   3541:    no new data has been transferred over the wire for that file.
                   3542: 
                   3543:  - Fixed a byte-order problem in `--batch-mode` on big-endian machines.  (Jay
                   3544:    Fenlason)
                   3545: 
                   3546:  - When using `--cvs-exclude`, the exclude items we get from a per-directory's
                   3547:    .cvsignore file once again only affect that one directory (not all following
                   3548:    directories too). The items are also now properly word-split and parsed
                   3549:    without any +/- prefix parsing.
                   3550: 
                   3551:  - When specifying the USER@HOST: prefix for a file, the USER part can now
                   3552:    contain an '@', if needed (i.e. the last '@' is used to find the HOST, not
                   3553:    the first).
                   3554: 
                   3555:  - Fixed some bugs in the handling of group IDs for non-root users: (1) It
                   3556:    properly handles a group that the sender didn't have a name for (it would
                   3557:    previously skip changing the group on any files in that group). (2) If
                   3558:    `--numeric-ids` is used, rsync no longer attempts to set groups that the
                   3559:    user doesn't have the permission to set.
                   3560: 
                   3561:  - Fixed the `refuse options` setting in the rsyncd.conf file.
                   3562: 
                   3563:  - Improved the `-x` (`--one-file-system`) flag's handling of any mount-point
                   3564:    directories we encounter. It is both more optimal (in that it no longer does
                   3565:    a useless scan of the contents of the mount-point dirs) and also fixes a
                   3566:    bug where a remapped mount of the original filesystem could get discovered
                   3567:    in a subdir we should be ignoring.
                   3568: 
                   3569:  - Rsync no longer discards a double-slash at the start of a filename when
                   3570:    trying to open the file. It also no longer constructs names that start with
                   3571:    a double slash (unless the user supplied them).
                   3572: 
                   3573:  - Path-specifying options to a daemon should now work the same with or without
                   3574:    chroot turned on. Previously, such a option (such as `--link-dest`) would
                   3575:    get its absolute path munged into a relative one if chroot was not on,
                   3576:    making that setting fairly useless.  Rsync now transforms the path into one
                   3577:    that is based on the module's base dir when chroot is not enabled.
                   3578: 
                   3579:  - Fixed a compatibility problem interacting with older rsync versions that
                   3580:    might send us an empty `--suffix` value without telling us that
                   3581:    `--backup-dir` was specified.
                   3582: 
                   3583:  - The `hosts allow` option for a daemon-over-remote-shell process now has
                   3584:    improved support for IPv6 addresses and a fix for systems that have a length
                   3585:    field in their socket structs.
                   3586: 
                   3587:  - Fixed the ability to request an empty backup `--suffix` when sending files
                   3588:    to an rsync daemon.
                   3589: 
                   3590:  - Fixed an option-parsing bug when `--files-from` was sent to a server sender.
                   3591: 
                   3592: ### INTERNAL:
                   3593: 
                   3594:  - Most of the I/O is now buffered, which results in a pretty large speedup
                   3595:    when running under MS Windows. (Craig Barratt)
                   3596: 
                   3597:  - Optimizations to the name-handling/comparing code have made some significant
                   3598:    reductions in user-CPU time for large file sets.
                   3599: 
                   3600:  - Some cleanup of the variable types make the code more consistent.
                   3601: 
                   3602:  - Reduced memory requirements of hard link preservation.  (J.W. Schultz)
                   3603: 
                   3604:  - Implemented a new algorithm for hard-link handling that speeds up the code
                   3605:    significantly. (J.W. Schultz and Wayne Davison)
                   3606: 
                   3607:  - The `--hard-link` option now uses the first existing file in the group of
                   3608:    linked files as the basis for the transfer. This prevents the sub-optimal
                   3609:    transfer of a file's data when a new hardlink is added on the sending side
                   3610:    and it sorts alphabetically earlier in the list than the files that are
                   3611:    already present on the receiving side.
                   3612: 
                   3613:  - Dropped support for protocol versions less than 20 (2.3.0 released 15 Mar
                   3614:    1999) and activated warnings for protocols less than 25 (2.5.0 released 23
                   3615:    Aug 2001). (Wayne Davison and J.W. Schultz, severally)
                   3616: 
                   3617:  - More optimal data transmission for `--hard-links` (protocol 28).
                   3618: 
                   3619:  - More optimal data transmission for `--checksum` (protocol 28).
                   3620: 
                   3621:  - Less memory is used when `--checksum` is specified.
                   3622: 
                   3623:  - Less memory is used in the file list (a per-file savings).
                   3624: 
                   3625:  - The generator is now better about not modifying the file list during the
                   3626:    transfer in order to avoid a copy-on-write memory bifurcation (on systems
                   3627:    where fork() uses shared memory).  Previously, rsync's shared memory would
                   3628:    slowly become unshared, resulting in real memory usage nearly doubling on
                   3629:    the receiving side by the end of the transfer. Now, as long as permissions
                   3630:    are being preserved, the shared memory should remain that way for the entire
                   3631:    transfer.
                   3632: 
                   3633:  - Changed hardlink info and `file_struct` + strings to use allocation pools.
                   3634:    This reduces memory use for large file-sets and permits freeing memory to
                   3635:    the OS. (J.W. Schultz)
                   3636: 
                   3637:  - The 2 pipes used between the receiver and generator processes (which are
                   3638:    forked on the same machine) were reduced to 1 pipe and the protocol improved
                   3639:    so that (1) it is now impossible to have the `redo` pipe fill up and hang
                   3640:    rsync, and (2) trailing messages from the receiver don't get lost on their
                   3641:    way through the generator over to the sender (which mainly affected
                   3642:    hard-link messages and verbose `--stats` output).
                   3643: 
                   3644:  - Improved the internal uid/gid code to be more portable and a little more
                   3645:    optimized.
                   3646: 
                   3647:  - The device numbers sent when using `--devices` are now sent as separate
                   3648:    major/minor values with 32-bit accuracy (protocol 28).  Previously, the
                   3649:    copied devices were sent as a single 32-bit number. This will make
                   3650:    inter-operation of 64-bit binaries more compatible with their 32-bit
                   3651:    brethren (with both ends of the connection are using protocol 28). Note that
                   3652:    optimizations in the binary protocol for sending the device numbers often
                   3653:    results in fewer bytes being used than before, even though more precision is
                   3654:    now available.
                   3655: 
                   3656:  - Some cleanup of the exclude/include structures and its code made things
                   3657:    clearer (internally), simpler, and more efficient.
                   3658: 
                   3659:  - The reading & writing of the file-list in batch-mode is now handled by the
                   3660:    same code that sends & receives the list over the wire. This makes it much
                   3661:    easier to maintain. (Note that the batch code is still considered to be
                   3662:    experimental.)
                   3663: 
                   3664: ### BUILD CHANGES:
                   3665: 
                   3666:  - The configure script now accepts `--with-rsyncd-conf=PATH` to override the
                   3667:    default value of the /etc/rsyncd.conf file.
                   3668: 
                   3669:  - Fixed configure bug when running `./configure --disable-ipv6`.
                   3670: 
                   3671:  - Fixed compilation problem on Tru64 Unix (having to do with `sockaddr.sa_len`
                   3672:    and `sockaddr.sin_len`).
                   3673: 
                   3674: ### DEVELOPER RELATED:
                   3675: 
                   3676:  - Fixed `make test` bug when build dir is not the source dir.
                   3677: 
                   3678:  - Added a couple extra diffs in the `patches` dir, removed the ones that got
                   3679:    applied, and rebuilt the rest.
                   3680: 
                   3681: ------------------------------------------------------------------------------
                   3682: <a name="2.6.0"></a>
                   3683: 
                   3684: # NEWS for rsync 2.6.0 (1 Jan 2004)
                   3685: 
                   3686: ## Changes in this version:
                   3687: 
                   3688: ### PROTOCOL NUMBER:
                   3689: 
                   3690:  - The protocol number was changed to 27.  The maximum accepted protocol number
                   3691:    was increased from 30 to 40.
                   3692: 
                   3693: ### ENHANCEMENTS:
                   3694: 
                   3695:  - `ssh` is now the default remote shell for rsync. If you want to change this,
                   3696:    configure like this: `./configure --with-rsh=rsh`.
                   3697: 
                   3698:  - Added `--files-from`, `--no-relative`, `--no-implied-dirs`, and `--from0`.
                   3699:    Note that `--from0` affects the line-ending character for all the files read
                   3700:    by the `--*-from` options. (Wayne Davison)
                   3701: 
                   3702:  - Length of csum2 is now per-file starting with protocol version
                   3703:    27. (J.W. Schultz)
                   3704: 
                   3705:  - Per-file dynamic block size is now sqrt(file length). The per-file checksum
                   3706:    size is determined according to an algorithm provided by Donovan Baarda
                   3707:    which reduces the probability of rsync algorithm corrupting data and falling
                   3708:    back using the whole md4 checksums. (J.W. Schultz, Donovan Baarda)
                   3709: 
                   3710:  - The `--stats` option no longer includes the (debug) malloc summary unless
                   3711:    the verbose option was specified at least twice.
                   3712: 
                   3713:  - Added a new error/warning code for when files vanish from the sending side.
                   3714:    Made vanished source files not interfere with the file-deletion pass when
                   3715:    `--delete-after` was specified.
                   3716: 
                   3717:  - Various trailing-info sections are now preceded by a newline.
                   3718: 
                   3719: ### BUG FIXES:
                   3720: 
                   3721:  - Fixed several exclude/include matching bugs when using wild-cards.  This has
                   3722:    a several user-visible effects, all of which make the matching more
                   3723:    consistent and intuitive. This should hopefully not cause anyone problems
                   3724:    since it makes the matching work more like what people are expecting. (Wayne
                   3725:    Davison)
                   3726: 
                   3727:  - A pattern with a `**` no longer causes a `*` to match slashes.  For example,
                   3728:    with `/*/foo/**`, `foo` must be 2 levels deep.  [If your string has BOTH `*`
                   3729:    and `**` wildcards, changing the `*` wildcards to `**` will provide the old
                   3730:    behavior in all versions.]
                   3731: 
                   3732:  - `**/foo` now matches at the base of the transfer (like /foo does). [Use
                   3733:    `/**/foo` to get the old behavior in all versions.]
                   3734: 
                   3735:  - A non-anchored wildcard term floats to match beyond the base of the
                   3736:    transfer. E.g. `CVS/R*` matches at the end of the path, just like the
                   3737:    non-wildcard term `CVS/Root` does. [Use `/CVS/R*` to get the old behavior in
                   3738:    all versions.]
                   3739: 
                   3740:  - Including a `**` in the match term causes it to be matched against the
                   3741:    entire path, not just the name portion, even if there aren't any interior
                   3742:    slashes in the term. E.g. `foo**bar` would exclude `/path/foo-bar` (just
                   3743:    like before) as well as `/foo-path/baz-bar` (unlike before). [Use `foo*bar`
                   3744:    to get the old behavior in all versions.]
                   3745: 
                   3746:  - The exclude list specified in the daemon's config file is now properly
                   3747:    applied to the pulled items no matter how deep the user's file-args are in
                   3748:    the source tree. (Wayne Davison)
                   3749: 
                   3750:  - For protocol version >= 27, `mdfour_tail()` is called when the block size
                   3751:    (including `checksum_seed`) is a multiple of 64.  Previously it was not
                   3752:    called, giving the wrong MD4 checksum.  (Craig Barratt)
                   3753: 
                   3754:  - For protocol version >= 27, a 64 bit bit counter is used in mdfour.c as
                   3755:    required by the RFC. Previously only a 32 bit bit counter was used, causing
                   3756:    incorrect MD4 file checksums for file sizes >= 512MB - 4. (Craig Barratt)
                   3757: 
                   3758:  - Fixed a crash bug when interacting with older rsync versions and multiple
                   3759:    files of the same name are destined for the same dir.  (Wayne Davison)
                   3760: 
                   3761:  - Keep tmp names from overflowing MAXPATHLEN.
                   3762: 
                   3763:  - Make `--link-dest` honor the absence of `-p`, `-o`, and `-g`.
                   3764: 
                   3765:  - Made rsync treat a trailing slash in the destination in a more consistent
                   3766:    manner.
                   3767: 
                   3768:  - Fixed file I/O error detection. (John Van Essen)
                   3769: 
                   3770:  - Fixed bogus `malformed address {hostname}` message in rsyncd log when
                   3771:    checking IP address against hostnames from `hosts allow` and `hosts deny`
                   3772:    parameters in config file.
                   3773: 
                   3774:  - Print heap statistics when verbose >= 2 instead of when >= 1.
                   3775: 
                   3776:  - Fixed a compression (`-z`) bug when syncing a mostly-matching file that
                   3777:    contains already-compressed data. (Yasuoka Masahiko and Wayne Davison)
                   3778: 
                   3779:  - Fixed a bug in the `--backup` code that could cause deleted files to not get
                   3780:    backed up.
                   3781: 
                   3782:  - When the backup code makes new directories, create them with mode 0700
                   3783:    instead of 0755 (since the directory permissions in the backup tree are not
                   3784:    yet copied from the main tree).
                   3785: 
                   3786:  - Call setgroups() in a more portable manner.
                   3787: 
                   3788:  - Improved file-related error messages to better indicate exactly what
                   3789:    pathname failed. (Wayne Davison)
                   3790: 
                   3791:  - Fixed some bugs in the handling of `--delete` and `--exclude` when using the
                   3792:    `--relative` (`-R`) option. (Wayne Davison)
                   3793: 
                   3794:  - Fixed bug that prevented regular files from replacing special files and
                   3795:    caused a directory in `--link-dest` or `--compare-dest` to block the
                   3796:    creation of a file with the same path. A directory still cannot be replaced
                   3797:    by a regular file unless `--delete` specified. (J.W. Schultz)
                   3798: 
                   3799:  - Detect and report when open or opendir succeed but read and readdir fail
                   3800:    caused by network filesystem issues and truncated files. (David Norwood,
                   3801:    Michael Brown, J.W. Schultz)
                   3802: 
                   3803:  - Added a fix that should give ssh time to restore the tty settings if the
                   3804:    user presses Ctrl-C at an ssh password prompt.
                   3805: 
                   3806: ### INTERNAL:
                   3807: 
                   3808:  - Eliminated vestigial support for old versions that we stopped supporting.
                   3809:    (J.W. Schultz)
                   3810: 
                   3811:  - Simplified some of the option-parsing code. (Wayne Davison)
                   3812: 
                   3813:  - Some cleanup made to the exclude code, as well as some new defines added to
                   3814:    enhance readability. (Wayne Davison)
                   3815: 
                   3816:  - Changed the protocol-version code so that it can interact at a lower
                   3817:    protocol level than the maximum supported by both sides.  Added an
                   3818:    undocumented option, `--protocol=N`, to force the value we advertise to the
                   3819:    other side (primarily for testing purposes).  (Wayne Davison)
                   3820: 
                   3821: ------------------------------------------------------------------------------
                   3822: <a name="2.5.7"></a>
                   3823: 
                   3824: # NEWS for rsync 2.5.7 (4 Dec 2003)
                   3825: 
                   3826: ## Changes in this version:
                   3827: 
                   3828: ### SECURITY FIXES:
                   3829: 
                   3830:  - Fix buffer handling bugs. (Andrew Tridgell, Martin Pool, Paul Russell,
                   3831:    Andrea Barisani)
                   3832: 
                   3833: ------------------------------------------------------------------------------
                   3834: <a name="2.5.6"></a>
                   3835: 
                   3836: # NEWS for rsync 2.5.6, aka "the dwd-between-jobs release" (26 Jan 2003)
                   3837: 
                   3838: ## Changes in this version:
                   3839: 
                   3840: ### ENHANCEMENTS:
                   3841: 
                   3842:  - The `--delete-after` option now implies `--delete`. (Wayne Davison)
                   3843: 
                   3844:  - The `--suffix` option can now be used with `--backup-dir`. (Michael
                   3845:    Zimmerman)
                   3846: 
                   3847:  - Combining `::` syntax with the `--rsh`/`-e` option now uses the specified
                   3848:    remote-shell as a transport to talk to a (newly-spawned) server-daemon. This
                   3849:    allows someone to use daemon features, such as modules, over a secure
                   3850:    protocol, such as ssh. (JD Paul)
                   3851: 
                   3852:  - The rsync:// syntax for daemon connections is now accepted in the
                   3853:    destination field.
                   3854: 
                   3855:  - If the file name given to `--include-from` or `--exclude-from` is `-`, rsync
                   3856:    will read from standard input. (J.W. Schultz)
                   3857: 
                   3858:  - New option `--link-dest` which is like `--compare-dest` except that
                   3859:    unchanged files are hard-linked in to the destination directory.  (J.W.
                   3860:    Schultz)
                   3861: 
                   3862:  - Don't report an error if an excluded file disappears during an rsync run.
                   3863:    (Eugene Chupriyanov and Bo Kersey)
                   3864: 
                   3865:  - Added .svn to `--cvs-exclude` list to support subversion. (Jon Middleton)
                   3866: 
                   3867:  - Properly support IPv6 addresses in the rsyncd.conf `hosts allow` and `hosts
                   3868:    deny` fields. (Hideaki Yoshifuji)
                   3869: 
                   3870:  - Changed exclude file handling to permit DOS or MAC style line terminations.
                   3871:    (J.W. Schultz)
                   3872: 
                   3873:  - Ignore errors from chmod when `-p`/`-a`/`--preserve-perms` is not set.
                   3874:    (Dave Dykstra)
                   3875: 
                   3876: ### BUG FIXES:
                   3877: 
                   3878:  - Fix `forward name lookup failed` errors on AIX 4.3.3. (John L. Allen, Martin
                   3879:    Pool)
                   3880: 
                   3881:  - Generate each file's rolling-checksum data as we send it, not in a separate
                   3882:    (memory-eating) pass before hand. This prevents timeout errors on really
                   3883:    large files. (Stefan Nehlsen)
                   3884: 
                   3885:  - Fix compilation on Tru64. (Albert Chin, Zoong Pham)
                   3886: 
                   3887:  - Better handling of some client-server errors. (Martin Pool)
                   3888: 
                   3889:  - Fixed a crash that would occur when sending a list of files that contains a
                   3890:    duplicate name (if it sorts to the end of the file list) and using
                   3891:    `--delete`. (Wayne Davison)
                   3892: 
                   3893:  - Fixed the file-name duplicate-removal code when dealing with multiple dups
                   3894:    in a row. (Wayne Davison)
                   3895: 
                   3896:  - Fixed a bug that caused rsync to lose the exit status of its child processes
                   3897:    and sometimes return an exit code of 0 instead of showing an error. (David
                   3898:    R. Staples, Dave Dykstra)
                   3899: 
                   3900:  - Fixed bug in `--copy-unsafe-links` that caused it to be completely broken.
                   3901:    (Dave Dykstra)
                   3902: 
                   3903:  - Prevent infinite recursion in cleanup code under certain circumstances.
                   3904:    (Sviatoslav Sviridov and Marc Espie)
                   3905: 
                   3906:  - Fixed a bug that prevented rsync from creating intervening directories when
                   3907:    `--relative-paths`/`-R` is set. (Craig Barratt)
                   3908: 
                   3909:  - Prevent `Connection reset by peer` messages from Cygwin. (Randy O'Meara)
                   3910: 
                   3911: ### INTERNAL:
                   3912: 
                   3913:  - Many code cleanups and improved internal documentation. (Martin Pool, Nelson
                   3914:    Beebe)
                   3915: 
                   3916:  - Portability fixes. (Dave Dykstra and Wayne Davison)
                   3917: 
                   3918:  - More test cases. (Martin Pool)
                   3919: 
                   3920:  - Some test-case fixes. (Brian Poole, Wayne Davison)
                   3921: 
                   3922:  - Updated included popt to the latest vendor drop, version 1.6.4.  (Jos
                   3923:    Backus)
                   3924: 
                   3925:  - Updated config.guess and config.sub to latest versions; this means rsync
                   3926:    should build on more platforms. (Paul Green)
                   3927: 
                   3928: ------------------------------------------------------------------------------
                   3929: <a name="2.5.5"></a>
                   3930: 
                   3931: # NEWS for rsync 2.5.5, aka Snowy River (2 Apr 2002)
                   3932: 
                   3933: ## Changes in this version:
                   3934: 
                   3935: ### ENHANCEMENTS:
                   3936: 
                   3937:  - With `--progress`, when a transfer is complete show the time taken;
                   3938:    otherwise show expected time to complete. (Cameron Simpson)
                   3939: 
                   3940:  - Make `make install-strip` works properly, and `make install` accepts a
                   3941:    DESTDIR variable for help in building binary packages.  (Peter
                   3942:    Breitenlohner, Greg Louis)
                   3943: 
                   3944:  - If configured with `--enable-maintainer-mode`, then on receipt of a fatal
                   3945:    signal rsync will try to open an xterm running gdb, similarly to Samba's
                   3946:    `panic action` or GNOME's bug-buddy.  (Martin Pool)
                   3947: 
                   3948: ### BUG FIXES:
                   3949: 
                   3950:  - Fix situation where failure to fork (e.g. because out of process slots)
                   3951:    would cause rsync to kill all processes owned by the current user. Yes,
                   3952:    really! (Paul Haas, Martin Pool)
                   3953: 
                   3954:  - Fix test suite on Solaris. (Jos Backus, Martin Pool)
                   3955: 
                   3956:  - Fix minor memory leak in socket code. (Dave Dykstra, Martin Pool.)
                   3957: 
                   3958:  - Fix `--whole-file` problem that caused it to be the default even for remote
                   3959:    connections. (Martin Pool, Frank Schulz)
                   3960: 
                   3961:  - Work around bug in Mac OS X mkdir(2), which cannot handle trailing slashes.
                   3962:    <http://www.opensource.apple.com/bugs/X/BSD%20Kernel/2734739.html> (Martin
                   3963:    Pool)
                   3964: 
                   3965:  - Improved network error handling. (Greg A. Woods)
                   3966: 
                   3967: ------------------------------------------------------------------------------
                   3968: <a name="2.5.4"></a>
                   3969: 
                   3970: # NEWS for rsync 2.5.4, aka "Imitation lizard skin" (13 Mar 2002)
                   3971: 
                   3972: ## Changes in this version:
                   3973: 
                   3974: ### BUG FIXES:
                   3975: 
                   3976:  - Additional fix for zlib double-free bug. (Martin Pool, Andrew Tridgell) (CVE
                   3977:    CAN-2002-0059)
                   3978: 
                   3979: ### ENHANCEMENTS:
                   3980: 
                   3981:  - Merge in changes from zlib 1.1.3 to zlib 1.1.4. (Jos Backus) (Note that
                   3982:    rsync still uses a custom version of zlib; you can not just link against a
                   3983:    system library. See zlib/README.rsync)
                   3984: 
                   3985:  - Additional test cases for `--compress`. (Martin Pool)
                   3986: 
                   3987: ------------------------------------------------------------------------------
                   3988: <a name="2.5.3"></a>
                   3989: 
                   3990: # NEWS for rsync 2.5.3, aka "Happy 26" (11 Mar 2002)
                   3991: 
                   3992: ## Changes in this version:
                   3993: 
                   3994: ### SECURITY FIXES:
                   3995: 
                   3996:  - Make sure that supplementary groups are removed from a server
                   3997:    process after changing uid and gid. (Ethan Benson) (Debian bug
                   3998:    #132272, CVE CAN-2002-0080)
                   3999: 
                   4000: ### BUG FIXES:
                   4001: 
                   4002:  - Fix zlib double-free bug. (Owen Taylor, Mark J Cox) (CVE CAN-2002-0059)
                   4003: 
                   4004:  - Fixed problem that in many cases caused the error message unexpected read
                   4005:    size of 0 in `map_ptr` and resulted in the wrong data being copied.
                   4006: 
                   4007:  - Fixed compilation errors on some systems caused by the use of `unsigned
                   4008:    int64` in rsync.h.
                   4009: 
                   4010:  - Fixed problem on systems such as Sunos4 that do not support realloc on a
                   4011:    NULL pointer; error was 'out of memory in "flist_expand"'.
                   4012: 
                   4013:  - Fix for rsync server processes hanging around after the client unexpectedly
                   4014:    disconnects. (Colin Walters) (Debian bug #128632)
                   4015: 
                   4016:  - Cope with BSD systems on which mkdir() will not accept a trailing slash.
                   4017: 
                   4018: ### ENHANCEMENTS:
                   4019: 
                   4020:  - Merge in changes from zlib 1.1.2 to zlib 1.1.3. (Note that rsync still uses
                   4021:    a custom version of zlib; you can not just link against a system library.
                   4022:    See zlib/README.rsync)
                   4023: 
                   4024:  - Command to initiate connections is only shown with `-vv`, rather than `-v`
                   4025:    as in 2.5.2. Output from plain `-v` is more similar to what was historically
                   4026:    used so as not to break scripts that try to parse the output.
                   4027: 
                   4028:  - Added `--no-whole-file` and `--no-blocking-io` options (Dave Dykstra)
                   4029: 
                   4030:  - Made the `--write-batch` and `--read-batch` options actually work and added
                   4031:    documentation in the man page (Jos Backus)
                   4032: 
                   4033:  - If the daemon is unable to fork a child to accept a connection, print an
                   4034:    error message. (Colin Walters)
                   4035: 
                   4036: ------------------------------------------------------------------------------
                   4037: <a name="2.5.2"></a>
                   4038: 
                   4039: # NEWS for rsync 2.5.2 (26 Jan 2002)
                   4040: 
                   4041: ## Changes in this version:
                   4042: 
                   4043: ### SECURITY FIXES:
                   4044: 
                   4045:  - Signedness security patch from Sebastian Krahmer <krahmer@suse.de> -- in
                   4046:    some cases we were not sufficiently careful about reading integers from the
                   4047:    network.
                   4048: 
                   4049: ### PROTOCOL NUMBER:
                   4050: 
                   4051:  - The protocol number was changed to 26.
                   4052: 
                   4053: ### BUG FIXES:
                   4054: 
                   4055:  - Fix possible string mangling in log files.
                   4056: 
                   4057:  - Fix for setting local address of outgoing sockets.
                   4058: 
                   4059:  - Better handling of hardlinks and devices on platforms with 64-bit `dev_t` or
                   4060:    `ino_t`.
                   4061: 
                   4062:  - Name resolution on machines supporting IPv6 is improved.
                   4063: 
                   4064:  - Fix for device nodes. (dann frazier) (Debian #129135)
                   4065: 
                   4066: ### ENHANCEMENTS:
                   4067: 
                   4068:  - With `-v`, rsync now shows the command used to initiate an ssh/rsh
                   4069:    connection.
                   4070: 
                   4071:  - `--statistics` now shows memory heap usage on platforms that support
                   4072:    mallinfo().
                   4073: 
                   4074:  - "The Ted T'so school of program optimization": make progress visible and
                   4075:    people will think it's faster. (With `--progress`, rsync will show you how
                   4076:    many files it has seen as it builds the `file_list`, giving some indication
                   4077:    that it has not hung.)
                   4078: 
                   4079:  - Improvements to batch mode support. This is still experimental but testing
                   4080:    would be welcome. (Jos Backus)
                   4081: 
                   4082:  - New `--ignore-existing` option, patch previously distributed with Vipul's
                   4083:    Razor. (Debian #124286)
                   4084: 
                   4085: ------------------------------------------------------------------------------
                   4086: <a name="2.5.1"></a>
                   4087: 
                   4088: # NEWS for rsync 2.5.1 (3 Jan 2002)
                   4089: 
                   4090: ## Changes in this version:
                   4091: 
                   4092: ### BUG FIXES:
                   4093: 
                   4094:  - Fix for segfault in `--daemon` mode configuration parser. (Paul Mackerras)
                   4095: 
                   4096:  - Correct `string<->address` parsing for both IPv4 and 6.  (YOSHIFUJI Hideaki,
                   4097:    SUMIKAWA Munechika and Jun-ichiro `itojun` Hagino)
                   4098: 
                   4099:  - Various fixes for IPv6 support. (Dave Dykstra)
                   4100: 
                   4101:  - rsync.1 typo fix. (Matt Kraai)
                   4102: 
                   4103:  - Test suite typo fixes. (Tom Schmidt)
                   4104: 
                   4105:  - rsync.1 grammar and clarity improvements. (Edward Welbourne)
                   4106: 
                   4107:  - Correction to ./configure tests for `inet_ntop`. (Jeff Garzik)
                   4108: 
                   4109: ### ENHANCEMENTS:
                   4110: 
                   4111:  - `--progress` and `-P` now show estimated data transfer rate (in a multiple
                   4112:    of bytes/s) and estimated time to completion. (Rik Faith)
                   4113: 
                   4114:  - `--no-detach` option, required to run as a W32 service and also useful when
                   4115:    running on Unix under daemontools, AIX's SRC, or a debugger. (Max Bowsher,
                   4116:    Jos Backus)
                   4117: 
                   4118:  - Clearer error messages for some conditions.
                   4119: 
                   4120: ------------------------------------------------------------------------------
                   4121: <a name="2.5.0"></a>
                   4122: 
                   4123: # NEWS for rsync 2.5.0 (30 Nov 2001)
                   4124: 
                   4125: ## Changes in this version:
                   4126: 
                   4127: ### PROTOCOL NUMBER:
                   4128: 
                   4129:  - The protocol number was changed to 25.
                   4130: 
                   4131: ### ANNOUNCEMENTS:
                   4132: 
                   4133:  - Martin Pool <mbp@samba.org> is now a co-maintainer.
                   4134: 
                   4135: ### NEW FEATURES:
                   4136: 
                   4137:  - Support for LSB-compliant packaging <http://www.linuxbase.org/>
                   4138: 
                   4139:  - Shell wildcards are allowed in `auth users` lines.
                   4140: 
                   4141:  - Merged UNC rsync+ patch to support creation of standalone patch sets. By
                   4142:    Bert J. Dempsey and Debra Weiss, updated by Jos Backus.
                   4143:    <http://www.ils.unc.edu/i2dsi/unc_rsync+.html>
                   4144: 
                   4145:  - IPv6 support based on a patch from KAME.net, on systems including modern
                   4146:    versions of Linux, Solaris, and HP-UX. Also includes IPv6 compatibility
                   4147:    functions for old OSs by the Internet Software Consortium, Paul Vixie, the
                   4148:    OpenSSH portability project, and OpenBSD.
                   4149: 
                   4150: ### ENHANCEMENTS:
                   4151: 
                   4152:  - Include/exclude cluestick: with `-vv`, print out whether files are included
                   4153:    or excluded and why.
                   4154: 
                   4155:  - Many error messages have more friendly explanations and more details.
                   4156: 
                   4157:  - Manual page improvements plus scanty protocol documentation.
                   4158: 
                   4159:  - When running as `--daemon` in the background and using a `log file`
                   4160:    rsyncd.conf directive, close the log file every time it is open when going
                   4161:    to sleep on the socket. This allows the log file to get cleaned out by
                   4162:    another process.
                   4163: 
                   4164:  - Change to using libpopt rather than getopt for processing options. This
                   4165:    makes the code cleaner and the behaviour more consistent across platforms.
                   4166:    popt is included and built if not installed on the platform.
                   4167: 
                   4168:  - More details in `--version`, including note about whether 64-bit files,
                   4169:    symlinks and hardlinks are supported.
                   4170: 
                   4171:  - MD4 code may use less CPU cycles.
                   4172: 
                   4173:  - Use mkstemp on systems where it is secure. If we use mktemp, explain that we
                   4174:    do it in a secure way.
                   4175: 
                   4176:  - `--whole-file` is the default when source and target are on the local
                   4177:    machine.
                   4178: 
                   4179: ### BUG FIXES:
                   4180: 
                   4181:  - Fix for various bugs causing rsync to hang.
                   4182: 
                   4183:  - Attempt to fix Large File Summit support on AIX.
                   4184: 
                   4185:  - Attempt to fix error handling lockup bug.
                   4186: 
                   4187:  - Give a non-0 exit code if **any** of the files we have been asked to
                   4188:    transfer fail to transfer.
                   4189: 
                   4190:  - For log messages containing ridiculously long strings that might overflow a
                   4191:    buffer rsync no longer aborts, but rather prints an ellipsis at the end of
                   4192:    the string. (Patch from Ed Santiago.)
                   4193: 
                   4194: ### PLATFORMS:
                   4195: 
                   4196:  - Improved support for UNICOS (tested on Cray T3E and Cray SV1)
                   4197: 
                   4198:  - autoconf2.52 (or later) is now required to rebuild the autoconf scripts. It
                   4199:    is not required to simply build rsync.
                   4200: 
                   4201:  - Platforms thought to work in this release:
                   4202: 
                   4203:    - Cray SV1 UNICOS 10.0.0.8 cc
                   4204:    - Debian Linux 2.2 UltraSparc gcc
                   4205:    - Debian Linux testing/unstable ARM gcc
                   4206:    - FreeBSD 3.3-RELEASE i386 cc
                   4207:    - FreeBSD 4.1.1-RELEASE i386 cc
                   4208:    - FreeBSD 4.3-STABLE i386 cc
                   4209:    - HP PA-RISC HP-UX 10.20 gcc
                   4210:    - HP PA-RISC HP-UX 11.11 cc
                   4211:    - IRIX 6.5 MIPS cc
                   4212:    - IRIX 6.5 MIPS gcc
                   4213:    - Mac OS X PPC (--disable-ipv6) cc
                   4214:    - NetBSD 1.5 i386 gcc
                   4215:    - NetBSD Current i386 cc
                   4216:    - OpenBSD 2.5 Sparc gcc
                   4217:    - OpenBSD 2.9 i386 cc
                   4218:    - OpenBSD Current i386 cc
                   4219:    - RedHat 6.2 i386 gcc
                   4220:    - RedHat 6.2 i386 insure++
                   4221:    - RedHat 7.0 i386 gcc
                   4222:    - RedHat 7.1 i386 (Kernel 2.4.10) gcc
                   4223:    - Slackware 8.0 i686 (Kernel 2.4.10)
                   4224:    - Solaris 8 UltraSparc cc
                   4225:    - Solaris 8 UltraSparc gcc
                   4226:    - Solaris 8 i386 gcc
                   4227:    - SuSE 7.1 i386 gcc2.95.2
                   4228:    - SuSE 7.1 ppc gcc2.95.2
                   4229:    - i386-pc-sco3.2v5.0.5 cc
                   4230:    - i386-pc-sco3.2v5.0.5 gcc
                   4231:    - powerpc-ibm-aix4.3.3.0 cc
                   4232:    - i686-unknown-sysv5UnixWare7.1.0 gcc
                   4233:    - i686-unknown-sysv5UnixWare7.1.0 cc
                   4234: 
                   4235: ### TESTING:
                   4236: 
                   4237:  - The existing test.sh script by Phil Hands has been merged into a
                   4238:    test framework that works from both `make check` and the Samba
                   4239:    build farm.
                   4240: 
                   4241: ------------------------------------------------------------------------------
                   4242: 
                   4243: ## Partial Protocol History
                   4244: 
                   4245: | RELEASE DATE | VER.   | DATE OF COMMIT\* | PROTOCOL    |
                   4246: |--------------|--------|------------------|-------------|
                   4247: | 06 Aug 2020  | 3.2.3  |                  | 31          |
                   4248: | 04 Jul 2020  | 3.2.2  |                  | 31          |
                   4249: | 22 Jun 2020  | 3.2.1  |                  | 31          |
                   4250: | 19 Jun 2020  | 3.2.0  |                  | 31          |
                   4251: | 28 Jan 2018  | 3.1.3  |                  | 31          |
                   4252: | 21 Dec 2015  | 3.1.2  |                  | 31          |
                   4253: | 22 Jun 2014  | 3.1.1  |                  | 31          |
                   4254: | 28 Sep 2013  | 3.1.0  | 31 Aug 2008      | 31          |
                   4255: | 23 Sep 2011  | 3.0.9  |                  | 30          |
                   4256: | 26 Mar 2011  | 3.0.8  |                  | 30          |
                   4257: | 31 Dec 2009  | 3.0.7  |                  | 30          |
                   4258: | 08 May 2009  | 3.0.6  |                  | 30          |
                   4259: | 28 Dec 2008  | 3.0.5  |                  | 30          |
                   4260: | 06 Sep 2008  | 3.0.4  |                  | 30          |
                   4261: | 29 Jun 2008  | 3.0.3  |                  | 30          |
                   4262: | 08 Apr 2008  | 3.0.2  |                  | 30          |
                   4263: | 03 Apr 2008  | 3.0.1  |                  | 30          |
                   4264: | 01 Mar 2008  | 3.0.0  | 11 Nov 2006      | 30          |
                   4265: | 06 Nov 2006  | 2.6.9  |                  | 29          |
                   4266: | 22 Apr 2006  | 2.6.8  |                  | 29          |
                   4267: | 11 Mar 2006  | 2.6.7  |                  | 29          |
                   4268: | 28 Jul 2005  | 2.6.6  |                  | 29          |
                   4269: | 01 Jun 2005  | 2.6.5  |                  | 29          |
                   4270: | 30 Mar 2005  | 2.6.4  | 17 Jan 2005      | 29          |
                   4271: | 30 Sep 2004  | 2.6.3  |                  | 28          |
                   4272: | 30 Apr 2004  | 2.6.2  |                  | 28          |
                   4273: | 26 Apr 2004  | 2.6.1  | 08 Jan 2004      | 28          |
                   4274: | 01 Jan 2004  | 2.6.0  | 10 Apr 2003      | 27 (MAX=40) |
                   4275: | 04 Dec 2003  | 2.5.7  |                  | 26          |
                   4276: | 26 Jan 2003  | 2.5.6  |                  | 26          |
                   4277: | 02 Apr 2002  | 2.5.5  |                  | 26          |
                   4278: | 13 Mar 2002  | 2.5.4  |                  | 26          |
                   4279: | 11 Mar 2002  | 2.5.3  |                  | 26          |
                   4280: | 26 Jan 2002  | 2.5.2  | 11 Jan 2002      | 26          |
                   4281: | 03 Jan 2002  | 2.5.1  |                  | 25          |
                   4282: | 30 Nov 2001  | 2.5.0  | 23 Aug 2001      | 25          |
                   4283: | 06 Sep 2000  | 2.4.6  |                  | 24          |
                   4284: | 19 Aug 2000  | 2.4.5  |                  | 24          |
                   4285: | 29 Jul 2000  | 2.4.4  |                  | 24          |
                   4286: | 09 Apr 2000  | 2.4.3  |                  | 24          |
                   4287: | 30 Mar 2000  | 2.4.2  |                  | 24          |
                   4288: | 30 Jan 2000  | 2.4.1  | 29 Jan 2000      | 24          |
                   4289: | 29 Jan 2000  | 2.4.0  | 28 Jan 2000      | 23          |
                   4290: | 25 Jan 2000  | 2.3.3  | 23 Jan 2000      | 22          |
                   4291: | 08 Nov 1999  | 2.3.2  | 26 Jun 1999      | 21          |
                   4292: | 06 Apr 1999  | 2.3.1  |                  | 20          |
                   4293: | 15 Mar 1999  | 2.3.0  | 15 Mar 1999      | 20          |
                   4294: | 25 Nov 1998  | 2.2.1  |                  | 19          |
                   4295: | 03 Nov 1998  | 2.2.0  |                  | 19          |
                   4296: | 09 Sep 1998  | 2.1.1  |                  | 19          |
                   4297: | 20 Jul 1998  | 2.1.0  |                  | 19          |
                   4298: | 17 Jul 1998  | 2.0.19 |                  | 19          |
                   4299: | 18 Jun 1998  | 2.0.17 |                  | 19          |
                   4300: | 01 Jun 1998  | 2.0.16 |                  | 19          |
                   4301: | 27 May 1998  | 2.0.13 | 27 May 1998      | 19          |
                   4302: | 26 May 1998  | 2.0.12 |                  | 18          |
                   4303: | 22 May 1998  | 2.0.11 |                  | 18          |
                   4304: | 18 May 1998  | 2.0.9  | 18 May 1998      | 18          |
                   4305: | 17 May 1998  | 2.0.8  |                  | 17          |
                   4306: | 15 May 1998  | 2.0.1  |                  | 17          |
                   4307: | 14 May 1998  | 2.0.0  |                  | 17          |
                   4308: | 17 Apr 1998  | 1.7.4  |                  | 17          |
                   4309: | 13 Apr 1998  | 1.7.3  |                  | 17          |
                   4310: | 05 Apr 1998  | 1.7.2  |                  | 17          |
                   4311: | 26 Mar 1998  | 1.7.1  |                  | 17          |
                   4312: | 26 Mar 1998  | 1.7.0  | 26 Mar 1998      | 17 (MAX=30) |
                   4313: | 13 Jan 1998  | 1.6.9  | 13 Jan 1998      | 15 (MAX=20) |
                   4314: 
                   4315: \* DATE OF COMMIT is the date the protocol change was committed to version
                   4316: control.

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