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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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tests/integration/test_features.py
+104 -15
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@@ -4510,9 +4510,11 @@ class TestIdentityMapping:
clean_dir(dest)
with open(os.path.join(source, "f.txt"), "wb") as f:
f.write(b"mapped")
# #294: --chown cannot be mixed with --usermap/--groupmap on the same
# side, so the maps travel together and --chown is exercised separately.
result, _ = run_client(
source, dest,
flags=["--preserve", "--usermap=@1000:@1001", "--groupmap=@100:@101", "--chown=@2000:@2001"],
flags=["--preserve", "--usermap=@1000:@1001", "--groupmap=@100:@101"],
port=shared_server.port)
assert result.returncode == 0, \
f"exit {result.returncode}: {(result.stderr or '')[:200]}"
@@ -4520,8 +4522,14 @@ class TestIdentityMapping:
with open(os.path.join(received, "f.txt"), "rb") as f:
assert f.read() == b"mapped"
result, _ = run_client(source, dest, flags=["--preserve", "--chown=@2000:@2001"],
port=shared_server.port)
assert result.returncode == 0, \
f"chown exit {result.returncode}: {(result.stderr or '')[:200]}"
@pytest.mark.skipif(os.geteuid() != 0, reason="only root can change ownership")
def test_numeric_ids_applies_ownership_as_root(self, shared_server):
def test_numeric_ids_alone_does_not_apply_ownership_as_root(self, shared_server):
# #286.1: --numeric-ids is a mapping modifier, not an ownership request.
source = os.path.join(TEST_DATA_DIR, "identity_root_source")
dest = os.path.join(TEST_DATA_DIR, "identity_root_dest")
clean_dir(source)
@@ -4539,8 +4547,8 @@ class TestIdentityMapping:
dst_file = os.path.join(received, "f.txt")
assert os.path.exists(dst_file)
st = os.stat(dst_file)
assert st.st_uid == 12345 and st.st_gid == 12346, \
f"owner not applied: uid={st.st_uid} gid={st.st_gid}"
assert st.st_uid != 12345, \
f"--numeric-ids alone must not chown: uid={st.st_uid} gid={st.st_gid}"
@pytest.mark.skipif(os.geteuid() != 0, reason="only root can change ownership")
def test_chown_overrides_ownership_as_root(self, shared_server):
@@ -4627,21 +4635,21 @@ class TestSuperPrivilege:
f"--super alone must not apply ownership (uid={st.st_uid} gid={st.st_gid})"
@pytest.mark.skipif(os.geteuid() != 0, reason="only root can change ownership")
def test_super_with_numeric_ids_applies_ownership_as_root(self, shared_server):
"""Control: an explicit identity policy is what enables ownership, so
--numeric-ids --super still applies the raw ids as root (the very
ownership --no-super suppresses)."""
def test_super_with_owner_numeric_ids_applies_ownership_as_root(self, shared_server):
"""Control: an explicit ownership request is what enables ownership, so
-a --numeric-ids --super applies the raw ids as root (the very ownership
--no-super suppresses). --numeric-ids itself is only the modifier."""
source, dest = self._seed("supernumeric")
os.chown(os.path.join(source, "f.txt"), 12345, 12346)
result, _ = run_client(source, dest,
flags=["--preserve", "--numeric-ids", "--super"],
flags=["-a", "--numeric-ids", "--super"],
port=shared_server.port)
assert result.returncode == 0, \
f"exit {result.returncode}: {(result.stderr or '')[:300]}"
received = get_dest_received_dir(dest, source)
st = os.stat(os.path.join(received, "f.txt"))
assert (st.st_uid, st.st_gid) == (12345, 12346), \
f"--numeric-ids --super should apply raw ids: uid={st.st_uid} gid={st.st_gid}"
f"-a --numeric-ids --super should apply raw ids: uid={st.st_uid} gid={st.st_gid}"
@pytest.mark.ci
@pytest.mark.skipif(os.geteuid() != 0, reason="only root can change ownership")
@@ -5453,6 +5461,79 @@ class TestExtendedAttributes:
assert len(fields) == 5
assert fields[0] == str(uid), f"reserved uid field {fields[0]} != source uid {uid}"
@pytest.mark.ci
def test_fake_super_records_resolved_chown_without_real_chown(self, shared_server):
"""#294: --fake-super must NOT real-chown the recorded owner; it records
the RESOLVED ownership (here a --chown mapping) in the reserved xattr."""
source, dest = self._source_and_dest("fakesuper_chown")
f = os.path.join(source, "data.txt")
with open(f, "wb") as fh:
fh.write(b"fake-super chown\n")
if not _xattr_supported(f):
pytest.skip("filesystem does not support xattrs")
result, _ = run_client(source, dest,
flags=["--fake-super", "--chown=@33333:@44444"],
port=shared_server.port)
assert result.returncode == 0, \
f"--fake-super --chown sync failed: {(result.stderr or result.stdout)[:300]}"
dst = os.path.join(get_dest_received_dir(dest, source), "data.txt")
record = os.getxattr(dst, "user.fastsync.stat").decode().split(":")
assert record[0] == "33333", f"recorded owner {record[0]} != resolved 33333"
assert record[1] == "44444", f"recorded group {record[1]} != resolved 44444"
st = os.stat(dst)
assert st.st_uid != 33333, "--fake-super must not real-chown the recorded owner"
@pytest.mark.ci
def test_directory_xattrs_preserved(self, shared_server):
"""#286.3: -aX must preserve user.* xattrs on DIRECTORIES, not just files."""
source, dest = self._source_and_dest("dirxattr")
os.makedirs(os.path.join(source, "sub"))
if not _xattr_supported(source):
pytest.skip("filesystem does not support user xattrs")
os.setxattr(source, "user.rootdir", b"r")
os.setxattr(os.path.join(source, "sub"), "user.subdir", b"s")
with open(os.path.join(source, "sub", "f.txt"), "wb") as fh:
fh.write(b"x\n")
result, _ = run_client(source, dest, flags=["-aX"], port=shared_server.port)
assert result.returncode == 0, \
f"-aX dir sync failed: {(result.stderr or result.stdout)[:300]}"
received = get_dest_received_dir(dest, source)
assert os.getxattr(received, "user.rootdir") == b"r"
assert os.getxattr(os.path.join(received, "sub"), "user.subdir") == b"s"
@pytest.mark.ci
def test_directory_default_acl_preserved(self, shared_server):
"""#286.3: -aA must preserve a directory's default POSIX ACL (the
system.posix_acl_default xattr), which regular-file ACLs do not cover."""
source, dest = self._source_and_dest("diracl")
sub = os.path.join(source, "sub")
os.makedirs(sub)
# A child is needed because FastSync deliberately does not materialize
# empty directories; the implicit parent is created by the child write.
with open(os.path.join(sub, "f.txt"), "wb") as fh:
fh.write(b"acl dir\n")
if not _xattr_supported(sub):
pytest.skip("filesystem does not support xattrs")
if shutil.which("setfacl") is None:
pytest.skip("setfacl is not available")
acl = subprocess.run(["setfacl", "-m", "d:u::rwx,d:g::rx,d:o::---", sub],
capture_output=True, text=True)
if acl.returncode != 0:
pytest.skip(f"cannot set a default ACL: {acl.stderr.strip()}")
try:
before = os.getxattr(sub, "system.posix_acl_default")
except OSError as e:
pytest.skip(f"no default ACL xattr: {e}")
result, _ = run_client(source, dest, flags=["-aA"], port=shared_server.port)
assert result.returncode == 0, \
f"-aA dir sync failed: {(result.stderr or result.stdout)[:300]}"
received = get_dest_received_dir(dest, source)
assert os.getxattr(os.path.join(received, "sub"),
"system.posix_acl_default") == before
class TestConnectivityClientOptions:
"""Phase 5 connectivity launch options (--outbuf, --blocking-io).
@@ -5878,8 +5959,8 @@ class TestCopyAs:
@pytest.mark.ci
@pytest.mark.skipif(os.geteuid() != 0, reason="requires a root receiver to chown")
def test_root_copy_as_with_fake_super_keeps_target_owner(self, shared_server):
"""--fake-super must not let the recorded source owner override the
--copy-as forced owner (copy-as is authoritative)."""
"""#294: --fake-super records the RESOLVED copy-as ownership without
real-chowning; the recorded source owner can never override copy-as."""
source = os.path.join(TEST_DATA_DIR, "copyas_fakesuper_src")
dest = os.path.join(TEST_DATA_DIR, "copyas_fakesuper_dst")
clean_dir(source)
@@ -5887,6 +5968,8 @@ class TestCopyAs:
src_file = os.path.join(source, "mixed.txt")
with open(src_file, "wb") as fh:
fh.write(b"copy-as wins over fake-super\n")
if not _xattr_supported(src_file):
pytest.skip("filesystem does not support user xattrs")
os.chown(src_file, 12345, 12346)
result, _ = run_client(source, dest,
@@ -5897,7 +5980,13 @@ class TestCopyAs:
f"{(result.stderr or result.stdout)[:400]}"
)
received = get_dest_received_dir(dest, source)
st = os.lstat(os.path.join(received, "mixed.txt"))
assert (st.st_uid, st.st_gid) == (65534, 65534), (
f"--fake-super overrode --copy-as: uid={st.st_uid} gid={st.st_gid}"
dst = os.path.join(received, "mixed.txt")
record = os.getxattr(dst, "user.fastsync.stat").decode().split(":")
assert (record[0], record[1]) == ("65534", "65534"), (
f"fake-super must record the resolved copy-as ownership: {record[:2]}"
)
st = os.lstat(dst)
assert (st.st_uid, st.st_gid) != (12345, 12346), (
f"--fake-super must not real-chown the recorded source owner: "
f"uid={st.st_uid} gid={st.st_gid}"
)