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310 lines
8.7 KiB
Python
Executable file
310 lines
8.7 KiB
Python
Executable file
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2012, Red Hat, inc
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# Written by Seth Vidal
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# based on the mount modules from salt and puppet
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = '''
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---
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module: mount
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short_description: Control active and configured mount points
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description:
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- This module controls active and configured mount points in C(/etc/fstab).
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version_added: "0.6"
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options:
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name:
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description:
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- "path to the mount point, eg: C(/mnt/files)"
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required: true
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default: null
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aliases: []
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src:
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description:
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- device to be mounted on I(name).
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required: true
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default: null
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fstype:
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description:
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- file-system type
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required: true
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default: null
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opts:
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description:
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- mount options (see fstab(8))
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required: false
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default: null
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dump:
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description:
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- dump (see fstab(8))
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required: false
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default: null
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passno:
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description:
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- passno (see fstab(8))
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required: false
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default: null
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state:
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description:
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- If C(mounted) or C(unmounted), the device will be actively mounted or unmounted
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as well as just configured in I(fstab). C(absent) and C(present) only deal with
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I(fstab).
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required: true
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choices: [ "present", "absent", "mounted", "unmounted" ]
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default: null
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examples:
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- code: mount name=/mnt/dvd src=/dev/sr0 fstype=iso9660 opts=ro
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description: "Mount DVD read-only"
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notes: []
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requirements: []
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author: Seth Vidal
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'''
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def write_fstab(lines, dest):
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fs_w = open(dest, 'w')
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for l in lines:
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fs_w.write(l)
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fs_w.flush()
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fs_w.close()
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def set_mount(**kwargs):
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""" set/change a mount point location in fstab """
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# kwargs: name, src, fstype, opts, dump, passno, state, fstab=/etc/fstab
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args = dict(
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opts = 'defaults',
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dump = '0',
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passno = '0',
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fstab = '/etc/fstab'
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)
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args.update(kwargs)
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new_line = '%(src)s %(name)s %(fstype)s %(opts)s %(dump)s %(passno)s\n'
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to_write = []
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exists = False
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changed = False
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for line in open(args['fstab'], 'r').readlines():
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if not line.strip():
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to_write.append(line)
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continue
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if line.strip().startswith('#'):
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to_write.append(line)
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continue
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if len(line.split()) != 6:
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# not sure what this is or why it is here
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# but it is not our fault so leave it be
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to_write.append(line)
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continue
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ld = {}
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ld['src'], ld['name'], ld['fstype'], ld['opts'], ld['dump'], ld['passno'] = line.split()
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if ld['name'] != args['name']:
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to_write.append(line)
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continue
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# it exists - now see if what we have is different
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exists = True
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for t in ('src', 'fstype','opts', 'dump', 'passno'):
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if ld[t] != args[t]:
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changed = True
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ld[t] = args[t]
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if changed:
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to_write.append(new_line % ld)
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else:
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to_write.append(line)
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if not exists:
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to_write.append(new_line % args)
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changed = True
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if changed:
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write_fstab(to_write, args['fstab'])
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return (args['name'], changed)
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def unset_mount(**kwargs):
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""" remove a mount point from fstab """
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# kwargs: name, src, fstype, opts, dump, passno, state, fstab=/etc/fstab
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args = dict(
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opts = 'default',
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dump = '0',
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passno = '0',
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fstab = '/etc/fstab'
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)
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args.update(kwargs)
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to_write = []
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changed = False
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for line in open(args['fstab'], 'r').readlines():
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if not line.strip():
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to_write.append(line)
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continue
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if line.strip().startswith('#'):
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to_write.append(line)
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continue
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if len(line.split()) != 6:
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# not sure what this is or why it is here
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# but it is not our fault so leave it be
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to_write.append(line)
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continue
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ld = {}
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ld['src'], ld['name'], ld['fstype'], ld['opts'], ld['dump'], ld['passno'] = line.split()
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if ld['name'] != args['name']:
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to_write.append(line)
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continue
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# if we got here we found a match - continue and mark changed
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changed = True
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if changed:
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write_fstab(to_write, args['fstab'])
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return (args['name'], changed)
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def mount(**kwargs):
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""" mount up a path or remount if needed """
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name = kwargs['name']
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if os.path.ismount(name):
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cmd = [ '/bin/mount', '-o', 'remount', name ]
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else:
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cmd = [ '/bin/mount', name ]
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call = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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out, err = call.communicate()
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if call.returncode == 0:
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return 0, ''
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else:
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return call.returncode, out+err
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def umount(**kwargs):
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""" unmount a path """
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name = kwargs['name']
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cmd = ['/bin/umount', name]
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call = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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out, err = call.communicate()
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if call.returncode == 0:
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return 0, ''
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else:
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return call.returncode, out+err
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def main():
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module = AnsibleModule(
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argument_spec = dict(
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state = dict(required=True, choices=['present', 'absent', 'mounted', 'unmounted']),
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name = dict(required=True),
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opts = dict(default=None),
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passno = dict(default=None),
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dump = dict(default=None),
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src = dict(required=True),
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fstype = dict(required=True),
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fstab = dict(default=None)
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)
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)
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changed = False
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rc = 0
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args = {
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'name': module.params['name'],
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'src': module.params['src'],
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'fstype': module.params['fstype']
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}
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if module.params['passno'] is not None:
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args['passno'] = module.params['passno']
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if module.params['opts'] is not None:
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args['opts'] = module.params['opts']
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if module.params['dump'] is not None:
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args['dump'] = module.params['dump']
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if module.params['fstab'] is not None:
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args['fstab'] = module.params['fstab']
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# absent == remove from fstab and unmounted
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# unmounted == do not change fstab state, but unmount
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# present == add to fstab, do not change mount state
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# mounted == add to fstab if not there and make sure it is mounted, if it has changed in fstab then remount it
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state = module.params['state']
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name = module.params['name']
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if state == 'absent':
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name, changed = unset_mount(**args)
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if changed:
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if os.path.ismount(name):
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res,msg = umount(**args)
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if res:
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module.fail_json(msg="Error unmounting %s: %s" % (name, msg))
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if os.path.exists(name):
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try:
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os.rmdir(name)
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except (OSError, IOError), e:
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module.fail_json(msg="Error rmdir %s: %s" % (name, str(e)))
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module.exit_json(changed=changed, **args)
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if state == 'unmounted':
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if os.path.ismount(name):
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res,msg = umount(**args)
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if res:
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module.fail_json(msg="Error unmounting %s: %s" % (name, msg))
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changed = True
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module.exit_json(changed=changed, **args)
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if state in ['mounted', 'present']:
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name, changed = set_mount(**args)
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if state == 'mounted':
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if not os.path.exists(name):
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try:
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os.makedirs(name)
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except (OSError, IOError), e:
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module.fail_json(msg="Error making dir %s: %s" % (name, str(e)))
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res = 0
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if os.path.ismount(name):
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if changed:
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res,msg = mount(**args)
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else:
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changed = True
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res,msg = mount(**args)
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if res:
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module.fail_json(msg="Error mounting %s: %s" % (name, msg))
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module.exit_json(changed=changed, **args)
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module.fail_json(msg='Unexpected position reached')
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sys.exit(0)
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# this is magic, see lib/ansible/module_common.py
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#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
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main()
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