def test_restore_restricted_user_group():
if is_superuser() or detect_fakeroot():
return
tmpdir = tempfile.mkdtemp(prefix='bup-tmetadata-')
try:
path = tmpdir + '/foo'
os.mkdir(path)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
WVPASSEQ(m.apply_to_path(path), None)
orig_uid = m.uid
m.uid = 0;
m.apply_to_path(path, restore_numeric_ids=True)
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith('lchown: '))
clear_errors()
m.uid = orig_uid
m.gid = 0;
m.apply_to_path(path, restore_numeric_ids=True)
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith('lchown: ') or os.stat(path).st_gid == m.gid)
clear_errors()
finally:
subprocess.call(['rm', '-rf', tmpdir])
def test_apply_to_path_restricted_access(tmpdir):
if is_superuser() or detect_fakeroot():
return
if sys.platform.startswith('cygwin'):
return # chmod 000 isn't effective.
try:
parent = tmpdir + b'/foo'
path = parent + b'/bar'
os.mkdir(parent)
os.mkdir(path)
clear_errors()
if metadata.xattr:
try:
metadata.xattr.set(path, b'user.buptest', b'bup')
except:
print("failed to set test xattr")
# ignore any failures here - maybe FS cannot do it
pass
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(parent, 0o000)
m.apply_to_path(path)
print(b'saved_errors:', helpers.saved_errors, file=sys.stderr)
expected_errors = ['utime: ']
if m.linux_attr and _linux_attr_supported(tmpdir):
expected_errors.append('Linux chattr: ')
if metadata.xattr and m.linux_xattr:
expected_errors.append("xattr.set ")
WVPASS(len(helpers.saved_errors) == len(expected_errors))
for i in range(len(expected_errors)):
assert str(helpers.saved_errors[i]).startswith(expected_errors[i])
finally:
clear_errors()
def test_apply_to_path_restricted_access():
if is_superuser() or detect_fakeroot():
return
if sys.platform.startswith('cygwin'):
return # chmod 000 isn't effective.
with no_lingering_errors(), test_tempdir('bup-tmetadata-') as tmpdir:
parent = tmpdir + '/foo'
path = parent + '/bar'
os.mkdir(parent)
os.mkdir(path)
clear_errors()
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(parent, 000)
m.apply_to_path(path)
print >> sys.stderr, 'saved_errors:', helpers.saved_errors
expected_errors = ['utime: ']
if m.linux_attr and _linux_attr_supported(tmpdir):
expected_errors.append('Linux chattr: ')
if metadata.xattr and m.linux_xattr:
expected_errors.append("xattr.set '")
WVPASS(len(helpers.saved_errors) == len(expected_errors))
for i in xrange(len(expected_errors)):
WVPASS(str(helpers.saved_errors[i]).startswith(expected_errors[i]))
clear_errors()
def test_restore_restricted_user_group():
if is_superuser() or detect_fakeroot():
return
tmpdir = tempfile.mkdtemp(prefix='bup-tmetadata-')
try:
path = tmpdir + '/foo'
os.mkdir(path)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
WVPASSEQ(m.apply_to_path(path), None)
orig_uid = m.uid
m.uid = 0;
m.apply_to_path(path, restore_numeric_ids=True)
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith('lchown: '))
clear_errors()
m.uid = orig_uid
m.gid = 0;
m.apply_to_path(path, restore_numeric_ids=True)
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith('lchown: ') or os.stat(path).st_gid == m.gid)
clear_errors()
finally:
subprocess.call(['rm', '-rf', tmpdir])
def test_handling_of_incorrect_existing_linux_xattrs():
if not is_superuser() or detect_fakeroot():
WVMSG('skipping test -- not superuser')
return
setup_testfs()
for f in glob.glob('testfs/*'):
ex('rm', '-rf', f)
path = 'testfs/foo'
open(path, 'w').close()
xattr.set(path, 'foo', 'bar', namespace=xattr.NS_USER)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
xattr.set(path, 'baz', 'bax', namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(xattr.list(path), ['user.foo'])
WVPASSEQ(xattr.get(path, 'user.foo'), 'bar')
xattr.set(path, 'foo', 'baz', namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(xattr.list(path), ['user.foo'])
WVPASSEQ(xattr.get(path, 'user.foo'), 'bar')
xattr.remove(path, 'foo', namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(xattr.list(path), ['user.foo'])
WVPASSEQ(xattr.get(path, 'user.foo'), 'bar')
os.chdir(start_dir)
cleanup_testfs()
def test_apply_to_path_restricted_access():
initial_failures = wvfailure_count()
if is_superuser() or detect_fakeroot():
return
if sys.platform.startswith('cygwin'):
return # chmod 000 isn't effective.
tmpdir = tempfile.mkdtemp(dir=bup_tmp, prefix='bup-tmetadata-')
parent = tmpdir + '/foo'
path = parent + '/bar'
os.mkdir(parent)
os.mkdir(path)
clear_errors()
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(parent, 000)
m.apply_to_path(path)
print >> sys.stderr, helpers.saved_errors
expected_errors = ['utime: ']
if m.linux_attr and _linux_attr_supported(tmpdir):
expected_errors.append('Linux chattr: ')
if metadata.xattr and m.linux_xattr:
expected_errors.append("xattr.set '")
WVPASS(len(helpers.saved_errors) == len(expected_errors))
for i in xrange(len(expected_errors)):
WVPASS(str(helpers.saved_errors[i]).startswith(expected_errors[i]))
clear_errors()
if wvfailure_count() == initial_failures:
subprocess.call(['chmod', '-R', 'u+rwX', tmpdir])
subprocess.call(['rm', '-rf', tmpdir])
def test_handling_of_incorrect_existing_linux_xattrs():
if not is_superuser() or detect_fakeroot():
WVMSG("skipping test -- not superuser")
return
setup_testfs()
for f in glob.glob("testfs/*"):
ex("rm", "-rf", f)
path = "testfs/foo"
open(path, "w").close()
xattr.set(path, "foo", "bar", namespace=xattr.NS_USER)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
xattr.set(path, "baz", "bax", namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(xattr.list(path), ["user.foo"])
WVPASSEQ(xattr.get(path, "user.foo"), "bar")
xattr.set(path, "foo", "baz", namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(xattr.list(path), ["user.foo"])
WVPASSEQ(xattr.get(path, "user.foo"), "bar")
xattr.remove(path, "foo", namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(xattr.list(path), ["user.foo"])
WVPASSEQ(xattr.get(path, "user.foo"), "bar")
os.chdir(start_dir)
cleanup_testfs()
def test_apply_to_path_restricted_access():
if is_superuser() or detect_fakeroot():
return
if sys.platform.startswith("cygwin"):
return # chmod 000 isn't effective.
tmpdir = tempfile.mkdtemp(prefix="bup-tmetadata-")
try:
parent = tmpdir + "/foo"
path = parent + "/bar"
os.mkdir(parent)
os.mkdir(path)
clear_errors()
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(parent, 000)
m.apply_to_path(path)
print >>sys.stderr, helpers.saved_errors
expected_errors = ["utime: "]
if m.linux_attr and _linux_attr_supported(tmpdir):
expected_errors.append("Linux chattr: ")
if metadata.xattr and m.linux_xattr:
expected_errors.append("xattr.set: ")
WVPASS(len(helpers.saved_errors) == len(expected_errors))
for i in xrange(len(expected_errors)):
WVPASS(str(helpers.saved_errors[i]).startswith(expected_errors[i]))
clear_errors()
finally:
subprocess.call(["chmod", "-R", "u+rwX", tmpdir])
subprocess.call(["rm", "-rf", tmpdir])
def test_handling_of_incorrect_existing_linux_xattrs():
if not is_superuser() or detect_fakeroot():
WVMSG('skipping test -- not superuser')
return
setup_testfs()
for f in glob.glob('testfs/*'):
ex('rm', '-rf', f)
path = 'testfs/foo'
open(path, 'w').close()
xattr.set(path, 'foo', 'bar', namespace=xattr.NS_USER)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
xattr.set(path, 'baz', 'bax', namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(xattr.list(path), ['user.foo'])
WVPASSEQ(xattr.get(path, 'user.foo'), 'bar')
xattr.set(path, 'foo', 'baz', namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(xattr.list(path), ['user.foo'])
WVPASSEQ(xattr.get(path, 'user.foo'), 'bar')
xattr.remove(path, 'foo', namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(xattr.list(path), ['user.foo'])
WVPASSEQ(xattr.get(path, 'user.foo'), 'bar')
os.chdir(start_dir)
cleanup_testfs()
def test_apply_to_path_restricted_access():
initial_failures = wvfailure_count()
if is_superuser() or detect_fakeroot():
return
if sys.platform.startswith('cygwin'):
return # chmod 000 isn't effective.
tmpdir = tempfile.mkdtemp(dir=bup_tmp, prefix='bup-tmetadata-')
parent = tmpdir + '/foo'
path = parent + '/bar'
os.mkdir(parent)
os.mkdir(path)
clear_errors()
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(parent, 000)
m.apply_to_path(path)
print >> sys.stderr, helpers.saved_errors
expected_errors = ['utime: ']
if m.linux_attr and _linux_attr_supported(tmpdir):
expected_errors.append('Linux chattr: ')
if metadata.xattr and m.linux_xattr:
expected_errors.append('xattr.set: ')
WVPASS(len(helpers.saved_errors) == len(expected_errors))
for i in xrange(len(expected_errors)):
WVPASS(str(helpers.saved_errors[i]).startswith(expected_errors[i]))
clear_errors()
if wvfailure_count() == initial_failures:
subprocess.call(['chmod', '-R', 'u+rwX', tmpdir])
subprocess.call(['rm', '-rf', tmpdir])
def test_handling_of_incorrect_existing_linux_xattrs():
if not is_superuser() or detect_fakeroot():
pytest.skip('skipping test -- not superuser')
return
if not setup_testfs():
pytest.skip('unable to load loop module; skipping dependent tests')
return
for f in glob.glob(b'testfs/*'):
ex(b'rm', b'-rf', f)
path = b'testfs/foo'
open(path, 'w').close()
xattr.set(path, b'foo', b'bar', namespace=xattr.NS_USER)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
xattr.set(path, b'baz', b'bax', namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(remove_selinux(xattr.list(path)), [b'user.foo'])
WVPASSEQ(xattr.get(path, b'user.foo'), b'bar')
xattr.set(path, b'foo', b'baz', namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(remove_selinux(xattr.list(path)), [b'user.foo'])
WVPASSEQ(xattr.get(path, b'user.foo'), b'bar')
xattr.remove(path, b'foo', namespace=xattr.NS_USER)
m.apply_to_path(path, restore_numeric_ids=False)
WVPASSEQ(remove_selinux(xattr.list(path)), [b'user.foo'])
WVPASSEQ(xattr.get(path, b'user.foo'), b'bar')
cleanup_testfs()
def test_from_path_error(tmpdir):
if is_superuser() or detect_fakeroot():
return
path = tmpdir + b'/foo'
os.mkdir(path)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(path, 0o000)
metadata.from_path(path, archive_path=path, save_symlinks=True)
if metadata.get_linux_file_attr:
print('saved_errors:', helpers.saved_errors, file=sys.stderr)
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith('read Linux attr'))
clear_errors()
def test_from_path_error():
if is_superuser() or detect_fakeroot():
return
with no_lingering_errors(), test_tempdir('bup-tmetadata-') as tmpdir:
path = tmpdir + '/foo'
os.mkdir(path)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(path, 000)
metadata.from_path(path, archive_path=path, save_symlinks=True)
if metadata.get_linux_file_attr:
print >> sys.stderr, 'saved_errors:', helpers.saved_errors
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith('read Linux attr'))
clear_errors()
def test_apply_to_path_restricted_access():
if is_superuser() or detect_fakeroot():
return
tmpdir = tempfile.mkdtemp(prefix='bup-tmetadata-')
try:
path = tmpdir + '/foo'
os.mkdir(path)
clear_errors()
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(tmpdir, 000)
m.apply_to_path(path)
errmsg = _first_err()
WVPASS(errmsg.startswith('utime: '))
clear_errors()
finally:
subprocess.call(['rm', '-rf', tmpdir])
def test_from_path_error():
if is_superuser() or detect_fakeroot():
return
tmpdir = tempfile.mkdtemp(prefix='bup-tmetadata-')
try:
path = tmpdir + '/foo'
os.mkdir(path)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(path, 000)
metadata.from_path(path, archive_path=path, save_symlinks=True)
if metadata.get_linux_file_attr:
errmsg = _first_err()
WVPASS(errmsg.startswith('read Linux attr'))
clear_errors()
finally:
subprocess.call(['rm', '-rf', tmpdir])
def test_apply_to_path_restricted_access():
if is_superuser() or detect_fakeroot():
return
tmpdir = tempfile.mkdtemp(prefix='bup-tmetadata-')
try:
path = tmpdir + '/foo'
os.mkdir(path)
clear_errors()
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(tmpdir, 000)
m.apply_to_path(path)
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith('utime: '))
clear_errors()
finally:
subprocess.call(['rm', '-rf', tmpdir])
def test_from_path_error():
if is_superuser() or detect_fakeroot():
return
tmpdir = tempfile.mkdtemp(prefix='bup-tmetadata-')
try:
path = tmpdir + '/foo'
os.mkdir(path)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(path, 000)
metadata.from_path(path, archive_path=path, save_symlinks=True)
if metadata.get_linux_file_attr:
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith('read Linux attr'))
clear_errors()
finally:
subprocess.call(['rm', '-rf', tmpdir])
def test_from_path_error():
if is_superuser() or detect_fakeroot():
return
tmpdir = tempfile.mkdtemp(prefix="bup-tmetadata-")
try:
path = tmpdir + "/foo"
os.mkdir(path)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(path, 000)
metadata.from_path(path, archive_path=path, save_symlinks=True)
if metadata.get_linux_file_attr:
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith("read Linux attr"))
clear_errors()
finally:
subprocess.call(["chmod", "-R", "u+rwX", tmpdir])
subprocess.call(["rm", "-rf", tmpdir])
def test_from_path_error():
initial_failures = wvfailure_count()
if is_superuser() or detect_fakeroot():
return
tmpdir = tempfile.mkdtemp(dir=bup_tmp, prefix='bup-tmetadata-')
path = tmpdir + '/foo'
os.mkdir(path)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(path, 000)
metadata.from_path(path, archive_path=path, save_symlinks=True)
if metadata.get_linux_file_attr:
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith('read Linux attr'))
clear_errors()
if wvfailure_count() == initial_failures:
subprocess.call(['chmod', '-R', 'u+rwX', tmpdir])
subprocess.call(['rm', '-rf', tmpdir])
def test_from_path_error():
initial_failures = wvfailure_count()
if is_superuser() or detect_fakeroot():
return
tmpdir = tempfile.mkdtemp(dir=bup_tmp, prefix='bup-tmetadata-')
path = tmpdir + '/foo'
os.mkdir(path)
m = metadata.from_path(path, archive_path=path, save_symlinks=True)
WVPASSEQ(m.path, path)
os.chmod(path, 000)
metadata.from_path(path, archive_path=path, save_symlinks=True)
if metadata.get_linux_file_attr:
print >> sys.stderr, 'saved_errors:', helpers.saved_errors
WVPASS(len(helpers.saved_errors) == 1)
errmsg = _first_err()
WVPASS(errmsg.startswith('read Linux attr'))
clear_errors()
if wvfailure_count() == initial_failures:
subprocess.call(['chmod', '-R', 'u+rwX', tmpdir])
subprocess.call(['rm', '-rf', tmpdir])
else:
raise
else:
try:
utime(path, (self.atime, self.mtime))
except OSError, e:
if e.errno == errno.EACCES:
raise ApplyError("utime: %s" % e)
else:
raise
# Implement tar/rsync-like semantics; see bup-restore(1).
# FIXME: should we consider caching user/group name <-> id
# mappings, getgroups(), etc.?
uid = gid = -1 # By default, do nothing.
if is_superuser():
uid = self.uid
gid = self.gid
if not restore_numeric_ids:
if self.uid != 0 and self.user:
entry = pwd_from_name(self.user)
if entry:
uid = entry.pw_uid
if self.gid != 0 and self.group:
entry = grp_from_name(self.group)
if entry:
gid = entry.gr_gid
else: # not superuser - only consider changing the group/gid
user_gids = os.getgroups()
if self.gid in user_gids:
gid = self.gid
def _apply_common_rec(self, path, restore_numeric_ids=False):
if not self.mode:
raise ApplyError('no metadata - cannot apply to ' + path_msg(path))
# FIXME: S_ISDOOR, S_IFMPB, S_IFCMP, S_IFNWK, ... see stat(2).
# EACCES errors at this stage are fatal for the current path.
if lutime and stat.S_ISLNK(self.mode):
try:
lutime(path, (self.atime, self.mtime))
except OSError as e:
if e.errno == errno.EACCES:
raise ApplyError('lutime: %s' % e)
else:
raise
else:
try:
utime(path, (self.atime, self.mtime))
except OSError as e:
if e.errno == errno.EACCES:
raise ApplyError('utime: %s' % e)
else:
raise
uid = gid = -1 # By default, do nothing.
if is_superuser():
if self.uid is not None:
uid = self.uid
if self.gid is not None:
gid = self.gid
if not restore_numeric_ids:
if self.uid != 0 and self.user:
entry = pwd_from_name(self.user)
if entry:
uid = entry.pw_uid
if self.gid != 0 and self.group:
entry = grp_from_name(self.group)
if entry:
gid = entry.gr_gid
else: # not superuser - only consider changing the group/gid
user_gids = os.getgroups()
if self.gid in user_gids:
gid = self.gid
if not restore_numeric_ids and self.gid != 0:
# The grp might not exist on the local system.
grps = filter(None, [grp_from_gid(x) for x in user_gids])
if self.group in [x.gr_name for x in grps]:
g = grp_from_name(self.group)
if g:
gid = g.gr_gid
if uid != -1 or gid != -1:
try:
os.lchown(path, uid, gid)
except OSError as e:
if e.errno == errno.EPERM:
add_error('lchown: %s' % e)
elif sys.platform.startswith('cygwin') \
and e.errno == errno.EINVAL:
add_error('lchown: unknown uid/gid (%d/%d) for %s'
% (uid, gid, path_msg(path)))
else:
raise
if _have_lchmod:
try:
os.lchmod(path, stat.S_IMODE(self.mode))
except OSError as e:
# - "Function not implemented"
# - "Operation not supported" might be generated by glibc
if e.errno in (errno.ENOSYS, errno.EOPNOTSUPP):
pass
else:
raise
elif not stat.S_ISLNK(self.mode):
os.chmod(path, stat.S_IMODE(self.mode))
if e.errno == errno.EACCES:
raise ApplyError('utime: %s' % e)
else:
raise
# Don't try to restore owner unless we're root, and even
# if asked, don't try to restore the owner or group if
# it doesn't exist in the system db.
uid = self.uid
gid = self.gid
if not restore_numeric_ids:
if not self.owner:
uid = -1
add_error('ignoring missing owner for "%s"\n' % path)
else:
if not is_superuser():
uid = -1 # Not root; assume we can't change owner.
else:
try:
uid = pwd.getpwnam(self.owner)[2]
except KeyError:
uid = -1
fmt = 'ignoring unknown owner %s for "%s"\n'
add_error(fmt % (self.owner, path))
if not self.group:
gid = -1
add_error('ignoring missing group for "%s"\n' % path)
else:
try:
gid = grp.getgrnam(self.group)[2]
except KeyError:
if e.errno == errno.EACCES:
raise ApplyError("utime: %s" % e)
else:
raise
# Don't try to restore owner unless we're root, and even
# if asked, don't try to restore the owner or group if
# it doesn't exist in the system db.
uid = self.uid
gid = self.gid
if not restore_numeric_ids:
if not self.owner:
uid = -1
add_error('ignoring missing owner for "%s"\n' % path)
else:
if not is_superuser():
uid = -1 # Not root; assume we can't change owner.
else:
try:
uid = pwd.getpwnam(self.owner)[2]
except KeyError:
uid = -1
fmt = 'ignoring unknown owner %s for "%s"\n'
add_error(fmt % (self.owner, path))
if not self.group:
gid = -1
add_error('ignoring missing group for "%s"\n' % path)
else:
try:
gid = grp.getgrnam(self.group)[2]
except KeyError:
else:
raise
else:
try:
utime(path, (self.atime, self.mtime))
except OSError, e:
if e.errno == errno.EACCES:
raise ApplyError('utime: %s' % e)
else:
raise
# Implement tar/rsync-like semantics; see bup-restore(1).
# FIXME: should we consider caching user/group name <-> id
# mappings, getgroups(), etc.?
uid = gid = -1 # By default, do nothing.
if is_superuser():
uid = self.uid
gid = self.gid
if not restore_numeric_ids:
if self.uid != 0 and self.user:
entry = pwd_from_name(self.user)
if entry:
uid = entry.pw_uid
if self.gid != 0 and self.group:
entry = grp_from_name(self.group)
if entry:
gid = entry.gr_gid
else: # not superuser - only consider changing the group/gid
user_gids = os.getgroups()
if self.gid in user_gids:
gid = self.gid
def _apply_common_rec(self, path, restore_numeric_ids=False):
if not self.mode:
raise ApplyError('no metadata - cannot apply to ' + path)
# FIXME: S_ISDOOR, S_IFMPB, S_IFCMP, S_IFNWK, ... see stat(2).
# EACCES errors at this stage are fatal for the current path.
if lutime and stat.S_ISLNK(self.mode):
try:
lutime(path, (self.atime, self.mtime))
except OSError as e:
if e.errno == errno.EACCES:
raise ApplyError('lutime: %s' % e)
else:
raise
else:
try:
utime(path, (self.atime, self.mtime))
except OSError as e:
if e.errno == errno.EACCES:
raise ApplyError('utime: %s' % e)
else:
raise
uid = gid = -1 # By default, do nothing.
if is_superuser():
uid = self.uid
gid = self.gid
if not restore_numeric_ids:
if self.uid != 0 and self.user:
entry = pwd_from_name(self.user)
if entry:
uid = entry.pw_uid
if self.gid != 0 and self.group:
entry = grp_from_name(self.group)
if entry:
gid = entry.gr_gid
else: # not superuser - only consider changing the group/gid
user_gids = os.getgroups()
if self.gid in user_gids:
gid = self.gid
if not restore_numeric_ids and self.gid != 0:
# The grp might not exist on the local system.
grps = filter(None, [grp_from_gid(x) for x in user_gids])
if self.group in [x.gr_name for x in grps]:
g = grp_from_name(self.group)
if g:
gid = g.gr_gid
if uid != -1 or gid != -1:
try:
os.lchown(path, uid, gid)
except OSError as e:
if e.errno == errno.EPERM:
add_error('lchown: %s' % e)
elif sys.platform.startswith('cygwin') \
and e.errno == errno.EINVAL:
add_error('lchown: unknown uid/gid (%d/%d) for %s'
% (uid, gid, path))
else:
raise
if _have_lchmod:
try:
os.lchmod(path, stat.S_IMODE(self.mode))
except errno.ENOSYS: # Function not implemented
pass
elif not stat.S_ISLNK(self.mode):
os.chmod(path, stat.S_IMODE(self.mode))