TapTap
34970b961c
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.
39 lines
1.8 KiB
C
39 lines
1.8 KiB
C
#ifndef FILE_ATTR_H
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#define FILE_ATTR_H
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#include "config.h"
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#include <stdbool.h>
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#include <sys/stat.h>
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/*
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* Per-attribute receiver policy for applying a transmitted FileMetadata. This
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* is the split-out replacement for the former single use_metadata bundle: each
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* flag is applied independently, matching rsync's -p/-t/-o/-g/-E/-U semantics.
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* `use_metadata` remains the transport/presence gate (whether the metadata frame
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* travelled at all); this struct decides which attributes are ACTUALLY applied.
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*
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* It lives in its own header (rather than metadata.h) because xattr.h's
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* fake_super_restore_fd() takes one and metadata.h <-> file_types.h form an
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* include cycle that must not be entered from xattr.h.
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*
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* The mode leg is: perms wins over executability; an exec-bits-only change is
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* made only when perms is off; when neither is set the receiver deliberately
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* sets no source mode. file.c then substitutes the pre-existing destination
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* mode for a brand-new destination with metadata it uses the sanitized
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* source-mode-&-umask base (S_IWGRP|S_IWOTH cleared), and the fixed 0644
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* default only when no metadata is available at all, so a no--p overwrite
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* does not lose the destination's perms.
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*/
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typedef struct FileAttrPolicy {
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bool perms; /* config->preserve_perms: apply the source mode bits */
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bool times; /* config->preserve_times: apply the source mtime */
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bool atimes; /* config->preserve_atimes (-U): apply the source atime */
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bool executability; /* config->use_executability (-E): exec-bits-only mode */
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} FileAttrPolicy;
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/* Build the per-attribute policy from a connection's Config. A NULL config
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* yields the all-off policy (no attribute application). */
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FileAttrPolicy file_attr_policy_from_config(const Config* config);
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#endif
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