From 7a754f722de1e44865573335b990658b3ff004cc Mon Sep 17 00:00:00 2001
From: Simeon Simeonov
Date: Tue, 12 Sep 2017 22:00:48 +0200
Subject: LVM support added

---
 cmount.py  | 52 +++++++++++++++++++++++++++++++++++++---------------
 cumount.py | 46 ++++++++++++++++++++++++++++++++--------------
 2 files changed, 69 insertions(+), 29 deletions(-)

diff --git a/cmount.py b/cmount.py
index 587c02f..f980dc9 100755
--- a/cmount.py
+++ b/cmount.py
@@ -20,21 +20,43 @@ def main():
             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') == 'efile':
-            cstm_error = 'Unable to create loop device'
-            data['device'] = subprocess.check_output(['/usr/sbin/losetup',
-                                                      '--find',
-                                                      '--show',
-                                                      data['device']]).strip()
-        cstm_error = 'system() error'
-        subprocess.check_call(['/sbin/cryptsetup',
-                               'luksOpen',
-                               data['device'],
-                               data['mapper_name']])
-        arguments = ['/bin/mount', '/dev/mapper/' + data['mapper_name']]
-        if data.get('target'):
-            arguments.append(data['target'])
-        subprocess.check_call(arguments)
+        if data.get('type') == 'lvm':
+            if not isinstance(data.get('pv_sources'), dict):
+                cstm_error = 'Invalid config for lvm-type'
+                raise Exception()
+            cstm_error = 'pv_sources error'
+            for device, mapper_name in data['pv_sources'].items():
+                subprocess.check_call(['/sbin/cryptsetup',
+                                       'luksOpen',
+                                       device,
+                                       mapper_name])
+            cstm_error = 'lvchange error'
+            subprocess.check_call(['/sbin/lvchange',
+                                   '-a',
+                                   'y',
+                                   data['device']])
+            cstm_error = 'mount error'
+            arguments = ['/bin/mount', data['device']]
+            if data.get('target'):
+                arguments.append(data['target'])
+            subprocess.check_call(arguments)
+        else:
+            if data.get('type') == 'efile':
+                cstm_error = 'Unable to create loop device'
+                data['device'] = subprocess.check_output(
+                    ['/usr/sbin/losetup',
+                     '--find',
+                     '--show',
+                     data['device']]).strip()
+            cstm_error = 'system() error'
+            subprocess.check_call(['/sbin/cryptsetup',
+                                   'luksOpen',
+                                   data['device'],
+                                   data['mapper_name']])
+            arguments = ['/bin/mount', '/dev/mapper/' + data['mapper_name']]
+            if data.get('target'):
+                arguments.append(data['target'])
+            subprocess.check_call(arguments)
     except subprocess.CalledProcessError as e:
         sys.stderr.write('Execution error: {0}\n'.format(e))
         sys.stderr.flush()
diff --git a/cumount.py b/cumount.py
index 16aa2f3..e2fb32f 100755
--- a/cumount.py
+++ b/cumount.py
@@ -20,20 +20,38 @@ def main():
             config_dict = json.load(fp)
         cstm_error = 'Invalid / nonexistent mapping: {0}'.format(sys.argv[1])
         data = config_dict[sys.argv[1]]
-        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])
+        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 = '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:
         sys.stderr.write('Execution error: {0}\n'.format(e))
         sys.stderr.flush()
-- 
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