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Standardizing the mount module

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pull/669/head
Nikhil Singh 13 years ago
parent 3a2df329af
commit 483f7fd625
1 changed files with 105 additions and 136 deletions
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241
library/mount
Unescape Escape View File

@ -19,18 +19,6 @@
# You should have received a copy of the GNU General Public License # You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>. # along with Ansible. If not, see <http://www.gnu.org/licenses/>.
try:
import json
except ImportError:
import simplejson as json
import os
import os.path
import shlex
import subprocess
import sys
import syslog
#mount module - mount fs and define in fstab #mount module - mount fs and define in fstab
#usage: #usage:
# mount name=mountpoint, src=device_to_be_mounted fstype=fstype opts=mount_opts, dump=0 passno=0 state=[present|absent|mounted|unmounted] # mount name=mountpoint, src=device_to_be_mounted fstype=fstype opts=mount_opts, dump=0 passno=0 state=[present|absent|mounted|unmounted]
@ -39,14 +27,6 @@ import syslog
# mounted == add to fstab if not there and make sure it is mounted # mounted == add to fstab if not there and make sure it is mounted
# unmounted == do not change fstab state, but unmount # unmounted == do not change fstab state, but unmount
def exit_json(rc=0, **kwargs):
print json.dumps(kwargs)
sys.exit(rc)
def fail_json(**kwargs):
kwargs['failed'] = True
exit_json(rc=1, **kwargs)
def write_fstab(lines, dest): def write_fstab(lines, dest):
fs_w = open(dest, 'w') fs_w = open(dest, 'w')
@ -59,10 +39,12 @@ def write_fstab(lines, dest):
def set_mount(**kwargs): def set_mount(**kwargs):
"set/change a mount point location in fstab" "set/change a mount point location in fstab"
# kwargs: name, src, fstype, opts, dump, passno, state, fstab=/etc/fstab # kwargs: name, src, fstype, opts, dump, passno, state, fstab=/etc/fstab
args = { 'opts':'defaults', args = {
'dump':'0', 'opts': 'defaults',
'passno':'0', 'dump': '0',
'fstab':'/etc/fstab' } 'passno': '0',
'fstab': '/etc/fstab'
}
args.update(kwargs) args.update(kwargs)
new_line = '%(src)s %(name)s %(fstype)s %(opts)s %(dump)s %(passno)s\n' new_line = '%(src)s %(name)s %(fstype)s %(opts)s %(dump)s %(passno)s\n'
@ -116,10 +98,12 @@ def set_mount(**kwargs):
def unset_mount(**kwargs): def unset_mount(**kwargs):
"remove a mount point from fstab" "remove a mount point from fstab"
# kwargs: name, src, fstype, opts, dump, passno, state, fstab=/etc/fstab # kwargs: name, src, fstype, opts, dump, passno, state, fstab=/etc/fstab
args = { 'opts':'default', args = {
'dump':'0', 'opts': 'default',
'passno':'0', 'dump': '0',
'fstab':'/etc/fstab' } 'passno': '0',
'fstab': '/etc/fstab'
}
args.update(kwargs) args.update(kwargs)
to_write = [] to_write = []
@ -166,10 +150,11 @@ def mount(**kwargs):
if call.returncode == 0: if call.returncode == 0:
return 0, '' return 0, ''
else: else:
return call.rc, out+err return call.returncode, out+err
def umount(**kwargs): def umount(**kwargs):
"unmount a path" "unmount a path"
name = kwargs['name']
cmd = ['/bin/umount', name] cmd = ['/bin/umount', name]
call = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE) call = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
@ -177,117 +162,101 @@ def umount(**kwargs):
if call.returncode == 0: if call.returncode == 0:
return 0, '' return 0, ''
else: else:
return call.rc, out+err return call.returncode, out+err
argfile = sys.argv[1] def main():
args = open(argfile, 'r').read() module = AnsibleModule(
items = shlex.split(args) argument_spec = dict(
syslog.openlog('ansible-%s' % os.path.basename(__file__)) state = dict(required=True, choices=['present', 'absent', 'mounted', 'unmounted']),
syslog.syslog(syslog.LOG_NOTICE, 'Invoked with %s' % args) name = dict(required=True),
opts = dict(default=None),
if not len(items): passno = dict(default=None),
fail_json(msg='the module requires arguments -a') dump = dict(default=None),
sys.exit(1) src = dict(required=True),
fstype = dict(required=True),
params = {} fstab = dict(default=None)
for x in items: )
(k, v) = x.split("=",1) )
params[k] = v
changed = False
state = params.get('state',None) rc = 0
name = params.get('name', None) args = {
opts = params.get('opts', None) 'name': module.params['name'],
passno = params.get('passno', None) 'src': module.params['src'],
dump = params.get('dump', None) 'fstype': module.params['fstype']
src = params.get('src', None) }
fstype = params.get('fstype', None) if module.params['passno'] is not None:
fstab = params.get('fstab', None) args['passno'] = module.params['passno']
if module.params['opts'] is not None:
args['opts'] = module.params['opts']
if state not in [ 'present', 'absent', 'mounted', 'unmounted' ]: if module.params['dump'] is not None:
fail_json(msg='invalid state') args['dump'] = module.params['dump']
if module.params['fstab'] is not None:
if not name: args['fstab'] = module.params['fstab']
fail_json(msg='no name option given')
if not src: # absent == remove from fstab and unmounted
fail_json(msg='no src option given') # unmounted == do not change fstab state, but unmount
# present == add to fstab, do not change mount state
if not fstype: # mounted == add to fstab if not there and make sure it is mounted, if it has changed in fstab then remount it
fail_json(msg='no fstype option given')
state = module.params['state']
name = module.params['name']
changed = False if state == 'absent':
rc = 0 name, changed = unset_mount(**args)
args = {'name':name, if changed:
'src':src, if os.path.ismount(name):
'fstype':fstype } res,msg = umount(**args)
if passno is not None: if res:
args['passno'] = passno fail_json(msg="Error unmounting %s: %s" % (name, msg))
if opts is not None:
args['opts'] = opts if os.path.exists(name):
if dump is not None: try:
args['dump'] = dump os.rmdir(name)
if fstab is not None: except (OSError, IOError), e:
args['fstab'] = fstab fail_json(msg="Error rmdir %s: %s" % (name, str(e)))
module.exit_json(changed=changed, **args)
# absent == remove from fstab and unmounted
# unmounted == do not change fstab state, but unmount
# present == add to fstab, do not change mount state if state == 'unmounted':
# mounted == add to fstab if not there and make sure it is mounted, if it has changed in fstab then remount it
if state == 'absent':
name, changed = unset_mount(**args)
if changed:
if os.path.ismount(name): if os.path.ismount(name):
res,msg = umount(**args) res,msg = umount(**args)
if res: if res:
fail_json(msg="Error unmounting %s: %s" % (name, msg)) fail_json(msg="Error unmounting %s: %s" % (name, msg))
changed = True
if os.path.exists(name):
try:
os.rmdir(name)
except (OSError, IOError), e:
fail_json(msg="Error rmdir %s: %s" % (name, str(e)))
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
exit_json(changed=changed, **args)
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): if state in ['mounted', 'present']:
try: name, changed = set_mount(**args)
os.makedirs(name) if state == 'mounted':
except (OSError, IOError), e: if not os.path.exists(name):
fail_json(msg="Error making dir %s: %s" % (name, str(e))) try:
os.makedirs(name)
res = 0 except (OSError, IOError), e:
if os.path.ismount(name): fail_json(msg="Error making dir %s: %s" % (name, str(e)))
if changed:
res = 0
if os.path.ismount(name):
if changed:
res,msg = mount(**args)
else:
changed = True
res,msg = mount(**args) res,msg = mount(**args)
else:
changed = True if res:
res,msg = mount(**args) fail_json(msg="Error mounting %s: %s" % (name, msg))
if res:
fail_json(msg="Error mounting %s: %s" % (name, msg)) module.exit_json(changed=changed, **args)
module.fail_json(msg='Unexpected position reached')
exit_json(changed=changed, **args) sys.exit(0)
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
fail_json(msg='Unexpected position reached') main()
sys.exit(0)

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