Method chown

Lib/tarfile.py:2759–2791

Set owner of targetpath according to tarinfo. If numeric_owner is True, use .gid/.uid instead of .gname/.uname. If numeric_owner is False, fall back to .gid/.uid when the search based on name fails.

(self, tarinfo, targetpath, numeric_owner)

                                 extraction_root=extraction_root)

    def chown(self, tarinfo, targetpath, numeric_owner):
        """Set owner of targetpath according to tarinfo. If numeric_owner
           is True, use .gid/.uid instead of .gname/.uname. If numeric_owner
           is False, fall back to .gid/.uid when the search based on name
           fails.
        """
        if hasattr(os, "geteuid") and os.geteuid() == 0:
            # We have to be root to do so.
            g = tarinfo.gid
            u = tarinfo.uid
            if not numeric_owner:
                try:
                    if grp and tarinfo.gname:
                        g = grp.getgrnam(tarinfo.gname)[2]
                except KeyError:
                    pass
                try:
                    if pwd and tarinfo.uname:
                        u = pwd.getpwnam(tarinfo.uname)[2]
                except KeyError:
                    pass
            if g is None:
                g = -1
            if u is None:
                u = -1
            try:
                if tarinfo.issym() and hasattr(os, "lchown"):
                    os.lchown(targetpath, u, g)
                else:
                    os.chown(targetpath, u, g)
            except (OSError, OverflowError) as e:
                # OverflowError can be raised if an ID doesn't fit in 'id_t'
                raise ExtractError("could not change owner") from e

    def chmod(self, tarinfo, targetpath):
        """Set file permissions of targetpath according to tarinfo.