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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import json
import os
import subprocess
import sys
def main():
if (len(sys.argv) != 2):
sys.exit('Invalid parameter. Usage: {0} <mapping>\n'.format(
sys.argv[0]))
cstm_error = ''
try:
cstm_error = 'Could not open config (~/.cmount.json)'
with open(os.path.expanduser('~/.cmount.json')) as fp:
config_dict = json.load(fp)
cstm_error = 'Invalid / nonexistent mapping: {0}'.format(sys.argv[1])
data = config_dict[sys.argv[1]]
if data.get('type') == 'lvm':
if not isinstance(data.get('pv_sources'), dict):
cstm_error = 'Invalid config for lvm-type'
raise Exception()
cstm_error = 'umount error'
subprocess.check_call(['/bin/umount',
data['device']])
cstm_error = 'lvchange error'
subprocess.check_call(['/sbin/lvchange',
'-a',
'n',
data['device']])
cstm_error = 'vgexport error'
subprocess.check_call(['/sbin/vgexport',
data['device'].split('/')[2]])
cstm_error = 'pv_sources error'
for mapper_name in data['pv_sources'].values():
subprocess.check_call(['/sbin/cryptsetup',
'luksClose',
mapper_name])
else:
subprocess.check_call(['/bin/umount',
'/dev/mapper/' + data['mapper_name']])
subprocess.check_call(['/sbin/cryptsetup',
'luksClose',
data['mapper_name']])
if data.get('type') == 'efile':
cstm_error = 'Unable to destroy loop device'
loop_device = subprocess.check_output(['/usr/sbin/losetup',
'--associated',
data['device']])
loop_device = loop_device.split(':')[0]
subprocess.check_call(['/usr/sbin/losetup',
'-d',
loop_device])
except subprocess.CalledProcessError as e:
print('Execution error: {0}\n'.format(e), file=sys.stderr, flush=True)
except Exception:
print('Error: {0}\n'.format(cstm_error), file=sys.stderr, flush=True)
if __name__ == '__main__':
main()
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