borg/src/borg/testsuite/platform_linux.py

125 lines
4.0 KiB
Python

import os
import tempfile
from ..platform import acl_get, acl_set
from .platform import skipif_not_linux, skipif_fakeroot_detected, skipif_acls_not_working, skipif_no_ubel_user
# set module-level skips
pytestmark = [skipif_not_linux, skipif_fakeroot_detected]
ACCESS_ACL = """\
user::rw-
user:root:rw-:0
user:9999:r--:9999
group::r--
group:root:r--:0
group:9999:r--:9999
mask::rw-
other::r--\
""".encode(
"ascii"
)
DEFAULT_ACL = """\
user::rw-
user:root:r--:0
user:8888:r--:8888
group::r--
group:root:r--:0
group:8888:r--:8888
mask::rw-
other::r--\
""".encode(
"ascii"
)
def get_acl(path, numeric_ids=False):
item = {}
acl_get(path, item, os.stat(path), numeric_ids=numeric_ids)
return item
def set_acl(path, access=None, default=None, numeric_ids=False):
item = {"acl_access": access, "acl_default": default}
acl_set(path, item, numeric_ids=numeric_ids)
@skipif_acls_not_working
def test_access_acl():
file = tempfile.NamedTemporaryFile()
assert get_acl(file.name) == {}
set_acl(
file.name,
access=b"user::rw-\ngroup::r--\nmask::rw-\nother::---\nuser:root:rw-:9999\ngroup:root:rw-:9999\n",
numeric_ids=False,
)
assert b"user:root:rw-:0" in get_acl(file.name)["acl_access"]
assert b"group:root:rw-:0" in get_acl(file.name)["acl_access"]
assert b"user:0:rw-:0" in get_acl(file.name, numeric_ids=True)["acl_access"]
file2 = tempfile.NamedTemporaryFile()
set_acl(
file2.name,
access=b"user::rw-\ngroup::r--\nmask::rw-\nother::---\nuser:root:rw-:9999\ngroup:root:rw-:9999\n",
numeric_ids=True,
)
assert b"user:9999:rw-:9999" in get_acl(file2.name)["acl_access"]
assert b"group:9999:rw-:9999" in get_acl(file2.name)["acl_access"]
@skipif_acls_not_working
def test_default_acl():
tmpdir = tempfile.mkdtemp()
assert get_acl(tmpdir) == {}
set_acl(tmpdir, access=ACCESS_ACL, default=DEFAULT_ACL)
assert get_acl(tmpdir)["acl_access"] == ACCESS_ACL
assert get_acl(tmpdir)["acl_default"] == DEFAULT_ACL
@skipif_acls_not_working
@skipif_no_ubel_user
def test_non_ascii_acl():
# Testing non-ascii ACL processing to see whether our code is robust.
# I have no idea whether non-ascii ACLs are allowed by the standard,
# but in practice they seem to be out there and must not make our code explode.
file = tempfile.NamedTemporaryFile()
assert get_acl(file.name) == {}
nothing_special = b"user::rw-\ngroup::r--\nmask::rw-\nother::---\n"
# TODO: can this be tested without having an existing system user übel with uid 666 gid 666?
user_entry = "user:übel:rw-:666".encode()
user_entry_numeric = b"user:666:rw-:666"
group_entry = "group:übel:rw-:666".encode()
group_entry_numeric = b"group:666:rw-:666"
acl = b"\n".join([nothing_special, user_entry, group_entry])
set_acl(file.name, access=acl, numeric_ids=False)
acl_access = get_acl(file.name, numeric_ids=False)["acl_access"]
assert user_entry in acl_access
assert group_entry in acl_access
acl_access_numeric = get_acl(file.name, numeric_ids=True)["acl_access"]
assert user_entry_numeric in acl_access_numeric
assert group_entry_numeric in acl_access_numeric
file2 = tempfile.NamedTemporaryFile()
set_acl(file2.name, access=acl, numeric_ids=True)
acl_access = get_acl(file2.name, numeric_ids=False)["acl_access"]
assert user_entry in acl_access
assert group_entry in acl_access
acl_access_numeric = get_acl(file.name, numeric_ids=True)["acl_access"]
assert user_entry_numeric in acl_access_numeric
assert group_entry_numeric in acl_access_numeric
def test_utils():
from ..platform.linux import acl_use_local_uid_gid
assert acl_use_local_uid_gid(b"user:nonexistent1234:rw-:1234") == b"user:1234:rw-"
assert acl_use_local_uid_gid(b"group:nonexistent1234:rw-:1234") == b"group:1234:rw-"
assert acl_use_local_uid_gid(b"user:root:rw-:0") == b"user:0:rw-"
assert acl_use_local_uid_gid(b"group:root:rw-:0") == b"group:0:rw-"