1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
#!/usr/bin/python
# (c) 2012, Red Hat, inc
# Written by Seth Vidal
# based on the mount modules from salt and puppet
#
# This file is part of Ansible
#
# Ansible 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.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
# mount module - mount fs and define in fstab
# usage:
#
# mount name=mountpoint, src=device_to_be_mounted fstype=fstype
# opts=mount_opts, dump=0 passno=0 state=[present|absent|mounted|unmounted]
#
# absent == remove from fstab and unmounted
# present == add to fstab, do not change mount state
# mounted == add to fstab if not there and make sure it is mounted
# unmounted == do not change fstab state, but unmount
def write_fstab(lines, dest):
fs_w = open(dest, 'w')
for l in lines:
fs_w.write(l)
fs_w.flush()
fs_w.close()
def set_mount(**kwargs):
""" set/change a mount point location in fstab """
# kwargs: name, src, fstype, opts, dump, passno, state, fstab=/etc/fstab
args = dict(
opts = 'defaults',
dump = '0',
passno = '0',
fstab = '/etc/fstab'
)
args.update(kwargs)
new_line = '%(src)s %(name)s %(fstype)s %(opts)s %(dump)s %(passno)s\n'
to_write = []
exists = False
changed = False
for line in open(args['fstab'], 'r').readlines():
if not line.strip():
to_write.append(line)
continue
if line.strip().startswith('#'):
to_write.append(line)
continue
if len(line.split()) != 6:
# not sure what this is or why it is here
# but it is not our fault so leave it be
to_write.append(line)
continue
ld = {}
ld['src'], ld['name'], ld['fstype'], ld['opts'], ld['dump'], ld['passno'] = line.split()
if ld['name'] != args['name']:
to_write.append(line)
continue
# it exists - now see if what we have is different
exists = True
for t in ('src', 'fstype','opts', 'dump', 'passno'):
if ld[t] != args[t]:
changed = True
ld[t] = args[t]
if changed:
to_write.append(new_line % ld)
else:
to_write.append(line)
if not exists:
to_write.append(new_line % args)
changed = True
if changed:
write_fstab(to_write, args['fstab'])
return (args['name'], changed)
def unset_mount(**kwargs):
""" remove a mount point from fstab """
# kwargs: name, src, fstype, opts, dump, passno, state, fstab=/etc/fstab
args = dict(
opts = 'default',
dump = '0',
passno = '0',
fstab = '/etc/fstab'
)
args.update(kwargs)
to_write = []
changed = False
for line in open(args['fstab'], 'r').readlines():
if not line.strip():
to_write.append(line)
continue
if line.strip().startswith('#'):
to_write.append(line)
continue
if len(line.split()) != 6:
# not sure what this is or why it is here
# but it is not our fault so leave it be
to_write.append(line)
continue
ld = {}
ld['src'], ld['name'], ld['fstype'], ld['opts'], ld['dump'], ld['passno'] = line.split()
if ld['name'] != args['name']:
to_write.append(line)
continue
# if we got here we found a match - continue and mark changed
changed = True
if changed:
write_fstab(to_write, args['fstab'])
return (args['name'], changed)
def mount(**kwargs):
""" mount up a path or remount if needed """
name = kwargs['name']
if os.path.ismount(name):
cmd = ['/bin/mount', '-o', 'remount', name]
else:
cmd = ['/bin/mount', name ]
call = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = call.communicate()
if call.returncode == 0:
return 0, ''
else:
return call.returncode, out+err
def umount(**kwargs):
""" unmount a path """
name = kwargs['name']
cmd = ['/bin/umount', name]
call = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = call.communicate()
if call.returncode == 0:
return 0, ''
else:
return call.returncode, out+err
def main():
module = AnsibleModule(
argument_spec = dict(
state = dict(required=True, choices=['present', 'absent', 'mounted', 'unmounted']),
name = dict(required=True),
opts = dict(default=None),
passno = dict(default=None),
dump = dict(default=None),
src = dict(required=True),
fstype = dict(required=True),
fstab = dict(default=None)
)
)
changed = False
rc = 0
args = {
'name': module.params['name'],
'src': module.params['src'],
'fstype': module.params['fstype']
}
if module.params['passno'] is not None:
args['passno'] = module.params['passno']
if module.params['opts'] is not None:
args['opts'] = module.params['opts']
if module.params['dump'] is not None:
args['dump'] = module.params['dump']
if module.params['fstab'] is not None:
args['fstab'] = module.params['fstab']
# absent == remove from fstab and unmounted
# unmounted == do not change fstab state, but unmount
# present == add to fstab, do not change mount state
# mounted == add to fstab if not there and make sure it is mounted, if it has changed in fstab then remount it
state = module.params['state']
name = module.params['name']
if state == 'absent':
name, changed = unset_mount(**args)
if changed:
if os.path.ismount(name):
res,msg = umount(**args)
if res:
fail_json(msg="Error unmounting %s: %s" % (name, msg))
if os.path.exists(name):
try:
os.rmdir(name)
except (OSError, IOError), e:
fail_json(msg="Error rmdir %s: %s" % (name, str(e)))
module.exit_json(changed=changed, **args)
if state == 'unmounted':
if os.path.ismount(name):
res,msg = umount(**args)
if res:
fail_json(msg="Error unmounting %s: %s" % (name, msg))
changed = True
module.exit_json(changed=changed, **args)
if state in ['mounted', 'present']:
name, changed = set_mount(**args)
if state == 'mounted':
if not os.path.exists(name):
try:
os.makedirs(name)
except (OSError, IOError), e:
fail_json(msg="Error making dir %s: %s" % (name, str(e)))
res = 0
if os.path.ismount(name):
if changed:
res,msg = mount(**args)
else:
changed = True
res,msg = mount(**args)
if res:
fail_json(msg="Error mounting %s: %s" % (name, msg))
module.exit_json(changed=changed, **args)
module.fail_json(msg='Unexpected position reached')
sys.exit(0)
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()
|
