1 # NEWS for rsync 3.2.0 (UNRELEASED)
3 Protocol: 31 (unchanged)
5 ## Changes since 3.1.3:
9 - Avoid a potential out-of-bounds read in daemon mode if argc can be made to
12 - Fix the default list of skip-compress files for non-daemon transfers.
14 - Fix xattr filter rules losing an 'x' attribute in a non-local transfer.
16 - Avoid an error when a check for a potential fuzzy file happens to reference
19 - Make the atomic-rsync helper script have a more consistent error-exit.
21 - Make sure that a signal handler calls `_exit()` instead of exit().
23 - Various zlib fixes, including security fixes for CVE-2016-9843,
24 CVE-2016-9842, CVE-2016-9841, and CVE-2016-9840.
26 - Fixed an issue with `--remove-source-files` not removing a source symlink
27 when combined with `--copy-links`.
29 - Fixed a bug where the daemon would fail to write early fatal error messages
30 to the client, such as refused or unknown command-line options.
32 - Fixed the block-size validation logic when dealing with older protocols.
34 - Some rrsync fixes and enhancements to handle the latest options.
36 - Fixed a crash in the `--iconv` code.
38 - Fixed a problem with the `--link-dest`|`--copy-dest` code when `--xattrs`
39 was specified along with multiple alternate-destination directories (it
40 could possibly choose a bad file match while trying to find a better xattr
43 - Fixed a couple bugs in the handling of files with the `--sparse` option.
45 - Fixed a bug in the writing of the batch.sh file (w/--write-batch) when the
46 source & destination args were not last on the command-line.
48 - Avoid a hang when an overabundance of messages clogs up all the I/O buffers.
50 - Fixed a mismatch in the RSYNC_PID values when running both a `pre-xfer exec`
51 and a `post-xfer exec`.
55 - Various checksum enhancements, including the optional use of openssl's MD4 &
56 MD5 checksum algorithms, some x86-64 optimizations for the rolling checksum,
57 some x86-64 optimizations for the (non-openssl) MD5 checksum, the addition
58 of xxhash checksum support, and a negotiation heuristic that ensures that it
59 is easier to add new checksum algorithms in the future. Currently the
60 x86-64 optimizations require the use of the `--enable-simd` flag to
61 configure, but they will probably be enabled by default in the near future.
62 The environment variable `RSYNC_CHECKSUM_LIST` can be used to customize the
63 preference order of the negotiation.
65 - Various compression enhancements, including the addition of zstd and lz4
66 compression algorithms and a negotiation heuristic that picks the best
67 compression option supported by both sides. The environment variable
68 `RSYNC_COMPRESS_LIST` can be used to customize the preference order of the
69 heuristic when speaking to another rsync 3.2.0 version.
71 - Added a --debug=NSTR option that outputs details of the new negotiation
72 strings (for checksums and compression). The first level just outputs the
73 result of each negotiation on the client, level 2 outputs the values of the
74 strings that were sent to and received from the server, and level 3 outputs
75 all those values on the server side too.
77 - The --debug=OPTS command-line option is no longer auto-forwarded to the
78 remote rsync which allows for the client and server to have different levels
79 of debug specified. This also allows for newer debug options to be
80 specified, such as using --debug=NSTR to see the negotiated hash result,
81 without having the command fail if the server version is too old to handle
82 that debug item. Use -M--debug=OPTS to send the options to the remote side.
84 - Added the `--atimes` option based on the long-standing patch (just with some
85 fixes that the patch has been needing).
87 - Added `--open-noatime` option to open files using `O_NOATIME`.
89 - Added the `--write-devices` option based on the long-standing patch.
91 - Added openssl support to the rsync-ssl script via a (lib installed) helper
92 script, ssl-rsh. Both bash scripts are now installed by default, removing
93 the install-ssl-client make target. Rsync was also enhanced to set the
94 `RSYNC_PORT` environment variable when running a daemon-over-rsh script. Its
95 value is the user-specified port number (set via `--port` or an rsync://
96 URL) or 0 if the user didn't override the port.
98 - Added the `haproxy header` daemon parameter that allows your rsyncd to know
99 the real remote IP when it is being proxied.
101 - Added negated matching to the daemon's `refuse options` setting by using
102 match strings that start with a `!` (such as `!compress*`).
104 - Added the `early exec` daemon parameter that runs a script before the
105 transfer parameters are known, allowing some early setup based on module
108 - Added status output in response to a signal (via both SIGINFO & SIGVTALRM).
110 - Added a `--copy-as=USER` option to give some extra security to root-run
111 rsync commands into/from untrusted directories (such as backups and
114 - When resuming the transfer of a file in the `--partial-dir`, rsync will now
115 update that partial file in-place instead of creating yet another tmp file
116 copy. This requires both sender & receiver to be at least v3.2.0.
118 - Added support for `RSYNC_SHELL` & `RSYNC_NO_XFER_EXEC` environment variables
119 that affect the pre-xfer exec and post-xfer exec rsync daemon options.
121 - Optimize the `--fuzzy` `--fuzzy` heuristic to avoid the fuzzy directory scan
122 until all other basis-file options are exhausted (such as `--link-dest`).
124 - Have a daemon that is logging include the normal-exit sent/received stats
125 even when the transfer exited with an error.
127 - The daemon now locks its pid file (when configured to use one) so that it
128 will not fail to start when the file exists and it is unlocked.
130 - Various man page improvements.
132 - Made -V the short option for --version.
134 ### DEVELOPER RELATED:
136 - Silenced some annoying warnings about major()|minor() due to the autoconf
137 include-file check not being smart enough.
139 - Converted the man pages from yodl to markdown. They are now processed via a
140 simple python3 script using the cmarkgfm OR commonmark library. This should
141 make it easier for packaging rsync, since yodl has gotten obscure.
143 - Improved some configure checks to work better with strict C99 compilers.
145 - The `--debug=FOO` options are no longer auto-forwarded to the server side,
146 allowing more control over what is output & the ability to request debug
147 data from divergent rsync versions.
149 - Some perl scripts were recoded into awk and python3.
151 - Some defines in byteorder.h were changed into static inline functions that
152 will help to ensure that the args don't get evaluated multiple times on
153 `careful alignment` hosts.
155 - Some code typos were fixed (as pointed out by a Fossies run).
157 ------------------------------------------------------------------------------