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samba-mirror/python/samba/mdb_util.py
Tim Beale b161b3a891 mdb_util: Better error message if lmdb-utils not installed
mdb_copy() was dutifully checking the PATH for the mdb_copy executable,
then, if it didn't find it, blindly proceeding anyway and trying to run
a non-existent executable. This resulted in a cryptic error:

  ERROR(<type 'exceptions.OSError'>): uncaught exception - [Errno 2] No
    such file or directory

Add in an extra check that we actually find the executable and raise a
better human-readable exception if we don't.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>

Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Fri Nov  9 21:07:47 CET 2018 on sn-devel-144
2018-11-09 21:07:47 +01:00

45 lines
1.5 KiB
Python

# Unix SMB/CIFS implementation.
# mdb util helpers
#
# Copyright (C) Andrew Bartlett <abartlet@samba.org> 2018
#
# 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/>.
import samba
import subprocess
import os
from samba.netcmd import CommandError
def mdb_copy(file1, file2):
"""Copy mdb file using mdb_copy utility and rename it
"""
# Find the location of the mdb_copy tool
dirs = os.getenv('PATH').split(os.pathsep)
found = False
for d in dirs:
toolpath = os.path.join(d, "mdb_copy")
if os.path.exists(toolpath):
found = True
break
if not found:
raise CommandError("mdb_copy not found. "
"You may need to install the lmdb-utils package")
mdb_copy_cmd = [toolpath, "-n", file1, "%s.copy.mdb" % file1]
status = subprocess.check_call(mdb_copy_cmd, close_fds=True, shell=False)
os.rename("%s.copy.mdb" % file1, file2)