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#!/usr/bin/env python
# vim: expandtab
#
# Utility code for dealing with POSIX extended attributes
#
# Copyright (C) Matthieu Patou <mat@matws.net> 2009 - 2010
# Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2012
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from samba.dcerpc import xattr
import os
import samba.xattr_native
import shutil
def copytree_with_xattrs(source, target):
"""Copy a tree but preserve extended attributes.
:param source: Source tree path
:param target: Target path
"""
shutil.copytree(source, target)
copyxattrs(target, source)
def copyxattrs(dir, refdir):
"""Copy extended attributes from a reference dir to a destination dir
Both dir are supposed to hold the same files
:param dir: Destination dir
:param refdir: Reference directory"""
for root, dirs, files in os.walk(dir, topdown=True):
for name in files:
subdir = root[len(dir):]
ref = os.path.join(refdir, subdir, name)
statsinfo = os.stat(ref)
tgt = os.path.join(root, name)
try:
os.chown(tgt, statsinfo.st_uid, statsinfo.st_gid)
# Get the xattr attributes if any
try:
attribute = samba.xattr_native.wrap_getxattr(ref,
xattr.XATTR_NTACL_NAME)
samba.xattr_native.wrap_setxattr(tgt,
xattr.XATTR_NTACL_NAME,
attribute)
except Exception:
pass
# FIXME:Catch a specific exception
attribute = samba.xattr_native.wrap_getxattr(ref,
"system.posix_acl_access")
samba.xattr_native.wrap_setxattr(tgt,
"system.posix_acl_access",
attribute)
except Exception:
# FIXME: Catch a specific exception
continue
for name in dirs:
subdir = root[len(dir):]
ref = os.path.join(refdir, subdir, name)
statsinfo = os.stat(ref)
tgt = os.path.join(root, name)
try:
os.chown(os.path.join(root, name), statsinfo.st_uid,
statsinfo.st_gid)
try:
attribute = samba.xattr_native.wrap_getxattr(ref,
xattr.XATTR_NTACL_NAME)
samba.xattr_native.wrap_setxattr(tgt,
xattr.XATTR_NTACL_NAME,
attribute)
except Exception:
pass # FIXME: Catch a specific exception
attribute = samba.xattr_native.wrap_getxattr(ref,
"system.posix_acl_access")
samba.xattr_native.wrap_setxattr(tgt,
"system.posix_acl_access",
attribute)
except Exception:
continue
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