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fix(identity): rsync ownership parity for numeric-ids, dirs, maps, fake-super (#286, #294)

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- #286: --numeric-ids is a mapping modifier only; it no longer activates
  chown by itself (identity_active_enabled/owner/group predicates), and
  --fake-super stores the resolved mapping instead of real-chowning.
- #286: apply owner/group to directories via the deferred directory
  metadata path; capture+transmit+apply directory xattrs/ACLs (-aX/-aA),
  including default ACLs, in STATUS_MKDIR/STATUS_DIR_TIMES.
- #294: --usermap/--groupmap support inclusive ranges, '*', empty FROM
  (unnamed ids), and receiver-side TO name resolution; --chown mixing with
  a same-side map is rejected like rsync.
- Protocol 2.22.0 -> 2.23.0 (map wire entry gains from_hi + to_name;
  dir frames gain a bounded xattr block).
This commit is contained in:
TapTap
2026-09-15 22:10:02 +02:00
parent 23552e823d
commit 6144c7fc7f
26 changed files with 1115 additions and 376 deletions
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src/client/usage.c
+9 -7
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@@ -190,17 +190,19 @@ void print_usage(void) {
printf(" within the confined receive root. Never elevates\n");
printf(" privileges and never bypasses confinement; ownership\n");
printf(" is still applied only with -o/--owner, -g/--group, or an\n");
printf(" explicit identity flag (--numeric-ids/--chown/--usermap/\n");
printf(" --groupmap/--copy-as)\n");
printf(" explicit identity flag (--chown/--usermap/--groupmap/\n");
printf(" --copy-as); --numeric-ids only changes how ids map\n");
printf(" --no-super Forbid those super-user activities even when the\n");
printf(" receiver is running as root\n");
printf(" --chmod <changes> Modify transferred permissions (rsync syntax)\n");
printf(" --numeric-ids Do not map uid/gid by name: use the source numeric\n");
printf(" ids directly when applying ownership\n");
printf(" --numeric-ids Map uid/gid by id instead of by name (a modifier, not\n");
printf(" an ownership request: combine with -o/-g or a map)\n");
printf(" --usermap=MAP Map usernames when applying ownership: comma-separated\n");
printf(" FROM:TO rules, first match wins. FROM/TO are names\n");
printf(" (resolved on the source machine), * (match any /\n");
printf(" current user), or @N numeric ids. e.g. *:nobody\n");
printf(" FROM:TO rules, first match wins. FROM is a name (from\n");
printf(" the source), an id, an inclusive LOW-HIGH range, *\n");
printf(" (any id), or empty (ids with no name). TO is an id, *\n");
printf(" (current user), or a name resolved on the receiver.\n");
printf(" e.g. 0-99:nobody,*:normal (cannot mix with --chown)\n");
printf(" --groupmap=MAP Map group names when applying ownership (same syntax)\n");
printf(" --chown=USER:GROUP Override the ownership of transferred files. Forms:\n");
printf(" USER:GROUP, USER (owner only), :GROUP (group only); a\n");