- Add the zlibx (external-code compatible) compression name.
- Re-enable zlib support with the external library so it can be
tried as a fallback if zlibx isn't available.
- Add --compress-choice=STR (aka -zz=STR) option.
- Make --cc=STR an alias for --checksum-choice=STR.
- Hook up the new compression negotiation logic.
Additionally restructures build switches and defines from SSE2 to SIMD,
to allow potential reuse should patches become available with SIMD
instructions for other processor architectures.
(Some minor tweaks of Jorrit's patch to avoid requiring GNU make and to
avoid C++ comments in .c files.)
- Add checksum negotiation to the protocol so that we can easily add new
checksum algorithms and each will be used when both sides support it.
- Increase the size of the compat_flags value in the protocol from a
byte to an int.
Requires compilation using GCC C++ front end, build scripts have been
modified accordingly. C++ is only used when the optimization is enabled
(g++ as compiler, x86-64 build target, --enable-sse2 is passed to
configure).
(Wayne made a few tweaks, including making it disabled by default.)
If both sides support the "V" compatibility flag, we send the file-list
flags as a varint instead of a 1-or-2 byte value. This upgrades the
number of reserved flag bits from 1 to 17 with very few extra bytes in
typical file-list data.
I replaced git-set-file-times with an improved version that I wrote
recently (in python3). A new script uses it to figure out the
last-modified year for each *.[ch] file and updates its copyright.
It also puts the latest year into the latest-year.h file for the
output of --version.
This is a fleshed out version of the old one in the patches repo with
documentation & proper handling of the implied --inplace option for a
daemon's option-rufusing considerations. I ommitted the -w short option
as I would hate for someone to turn this on accidentally.
This can be used by a root-run rsync to try to make reading or writing
files safer in a situation where you can't run the whole rsync command
as a non-root user.
In parse_arguments when --protect-args is encountered the function exits
early. The caller is expected to check protect_args, and recall
parse_arguments setting protect_args to 2. This patch prevents the
client from resetting protect_args during the second pass of
parse_arguments. This prevents parse_arguments returning early the
second time before it's able to sanitize the arguments it received.
The new code tries to punch holes in the destination file using newer
Linux fallocate features. It also supports a --whole-file + --sparse +
--inplace copy on any filesystem by truncating the destination file.
This patch adds the ability to specify --modify-window=-1 (aka -@-1) to
ask rsync to compare files with the full nanosecond timestamps. The
default is still -@0 for the moment, which ignores nanoseconds in time
comparisons. Changing the default to -1 would cause a copy from ext4 to
ext3 to constantly compare as different, or a copy there and back again
to do a full copy as it zeroed all the nanosecond times. Such a change
might be too much of a functional difference for things like backup
solutions to handle without a warning period. The current plan is to
support nanosecond comparisons for those that want them, and possibly
change the default window value from 0 to -1 at some point in the
future.
I added a compatibility flag for protocol 31 that will let both sides
know if they should be using the xattr optimization that attempted to
avoid sending xattr info for hardlinked files. Since this optimization
was causing some issues, this compatibility flag will ensure that both
sides know if they should be trying to use the optimization or not.
Adding new-style compression that only compresses the literal data that
is sent over the wire and not also matching file data that was not sent.
This new-style compression is compatible with external zlib instances,
and will eventually become the default (once enough time has passed that
all servers support the --new-compress and --old-compress options).
NOTE: if you build rsync with an external zlib (i.e. if you specified
configure --with-included-zlib=no) you will ONLY get support for the
--new-compress option! A client will treat -z as uncompressed (with a
warning) and a server will exit with an error (unless -zz was used).
