feat: per-attribute preservation flags -p/-t/-o/-g with --no-* negations (protocol 2.22.0)

Split FastSync's single use_metadata bundle into four independent rsync-parity attributes: preserve_perms, preserve_times, preserve_owner, preserve_group. use_metadata is now a derived transport bit (config_derived_use_metadata).

CLI: real -p/--perms, -t/--times, -o/--owner, -g/--group plus --no-perms/--no-times/--no-owner/--no-group (short and long) and --no-preserve; -a is now rsync -rlptgoD; --preserve = -pt; -A implies -p; -X does not; --chmod implies -p; --usermap/--groupmap/--chown imply owner/group per side; --incremental/--delta still auto-preserve unless negated.

Receiver: per-attribute FileAttrPolicy gating for files, dirs (modes applied at end of transfer), symlinks and specials; rsync -E read-bit rule; new files get source_mode & ~umask sanitized (no group/other write); per-side identity resolution; deferred directory metadata; batch dir-metadata replay; daemon modules without 'client owner = yes' no longer refuse plain -a but force super off (no ownership) with a warning.

Wire: PROTOCOL_VERSION 2.21.0 -> 2.22.0 (four appended config bools, golden 653 / 95530566005420798). FileMetadata/chunk/batch framing unchanged. Docs/CHANGELOG/CMake updated to 2.22.0.

This commit is contained in:

TapTap

2026-09-15 19:32:02 +02:00

parent b3f7cad4db

commit 34970b961c

35 changed files with 2523 additions and 485 deletions

									
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				@@ -16,7 +16,7 @@ Ask the user or determine from context:

				- **Minor** (x.Y.0) — new features, backward compatible

				- **Patch** (x.y.Z) — bug fixes, no protocol changes

				Current version: `PROTOCOL_VERSION "2.21.0"` in `src/shared/config.h`

				Current version: `PROTOCOL_VERSION "2.22.0"` in `src/shared/config.h`

				### Step 2: Check Protocol Version