utils.py 文件源码

def apply_mapping_in_image(uid, gid, rootfs_tree, g):
    """
    Apply mapping of new ownership
    """
    if uid:
        uid_opts = get_mapping_opts(uid)
    if gid:
        gid_opts = get_mapping_opts(gid)

    for member in rootfs_tree:
        old_uid = rootfs_tree[member]['uid']
        old_gid = rootfs_tree[member]['gid']

        new_uid = get_map_id(old_uid, uid_opts) if uid else -1
        new_gid = get_map_id(old_gid, gid_opts) if gid else -1
        if new_uid != -1 or new_gid != -1:
            g.lchown(new_uid, new_gid, os.path.join('/', member))