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# Storage Management Providers
#
# Copyright (c) 2013, Red Hat, Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# The views and conclusions contained in the software and documentation are
# those of the authors and should not be interpreted as representing official
# policies, either expressed or implied, of the FreeBSD Project.
#
# Authors: Jan Synacek <jsynacek@redhat.com>
#
"""
Mounting management functions.
"""
from lmi.scripts.common.errors import LmiFailed
from lmi.scripts.common import get_logger
LOG = get_logger(__name__)
from lmi.scripts.storage import common
_OPTS = ['AllowExecution',
'AllowMandatoryLock',
'AllowSUID',
'AllowUserMount',
'AllowWrite',
'Auto',
'Dump',
'FileSystemCheckOrder',
'InterpretDevices',
'OtherOptions',
'Silent',
'SynchronousDirectoryUpdates',
'SynchronousIO',
'UpdateAccessTimes',
'UpdateDirectoryAccessTimes',
'UpdateFullAccessTimes',
'UpdateRelativeAccessTimes']
def build_opts_str(mnt):
"""
Build option strings from an LMI_MountedFileSystem instance.
:type mnt: an LMIInstance of LMI_MountedFileSystem
:rtype: tuple of option strings
"""
opts = []
otheropts = []
setting = mnt.associators(ResultClass='LMI_MountedFileSystemSetting')[0]
for k, v in setting.properties_dict().iteritems():
if v is None: continue
if k == 'OtherOptions':
otheropts = v
elif k in _OPTS:
opts.append(k + ':' + unicode(v))
return (', '.join(sorted(opts)), ', '.join(sorted(otheropts)))
def get_setting_from_opts(ns, options, other_options):
"""
Create a setting instance from option strings.
:type options: string of comma-separated options
:type other_options: string of comma-separated options
:rtype: an instance of LMI_MountedFileSystemSetting
"""
cap = ns.LMI_MountedFileSystemCapabilities.first_instance()
(ret, outparams, _err) = cap.CreateSetting()
if ret != 0:
raise LmiFailed('Could not create setting')
setting = outparams['setting'].to_instance()
if other_options is not None:
setting.OtherOptions = other_options.split(',')
if options is None:
return setting
for opt_pair in options.split(','):
opts = map(lambda o: o.strip(), opt_pair.split(':'))
# bail out if the option is not in 'Option:Value' format
# or if the Option is not in supported options
if len(opts) != 2 or opts[0] not in _OPTS:
raise LmiFailed('Invalid option: %s' % opt_pair)
# ignore OtherOptions, there is a separate cmdline option for it
if opts[0] == 'OtherOptions':
continue
# insist on using a number with FileSystemCheckOrder
if opts[0] == 'FileSystemCheckOrder':
if not opts[1].isdigit():
raise LmiFailed('Value of FileSystemCheckOrder must be a number')
opts[1] = int(opts[1])
else:
# otherwise check for true/false possibilities
opts[1] = opts[1].lower()
if opts[1] not in ['t', 'true', 'f', 'false']:
raise LmiFailed('Invalid option value: %s' % opts[1])
# sanitize the boolean option values
if opts[1] in ['t', 'true']:
opts[1] = True
else:
opts[1] = False
setattr(setting, opts[0], opts[1])
return setting
def get_mounts(ns):
"""
Return all instances of LMI_MountedFileSystem.
:rtype: list of LMI_MountedFileSystem
"""
return ns.LMI_MountedFileSystem.instances()
def mount_create(ns, device, mountpoint, fs_type=None, options=None, other_options=None):
"""
Create a mounted filesystem.
:type device: string
:param device: device path
:type mountpoint: string
:param mountpoint: path where device should be mounted
:type fs_type: string
:param fs_type: filesystem type
:type options: string
:param options: comma-separated string of mount options
:type other_options: string
:param other_options: comma-separated string of filesystem specific mount options
"""
fs_setting = ns.LMI_FileSystemSetting.first_instance({'InstanceID':'LMI:LMI_FileSystemSetting:'+device})
if fs_setting is None:
raise LmiFailed('Wrong device: %s' % device)
filesystem = fs_setting.associators()[0]
if fs_type is None:
fs_type = filesystem.FileSystemType
service = ns.LMI_MountConfigurationService.first_instance()
setting = get_setting_from_opts(ns, options, other_options)
setting.push()
# TODO for now
# Mode 32768 == only mount (don't create any persistent info)
(ret, _outparams, _err) = service.SyncCreateMount(Goal=setting.path,
FileSystemType=fs_type,
Mode=32768,
FileSystem=filesystem.path,
MountPoint=mountpoint,
FileSystemSpec=device)
msg = '%s on %s' % (device, mountpoint)
if ret != 0:
errname = service.SyncCreateMount.CreateMountValues.value_name(ret)
raise LmiFailed('Cannot create mount: %s: %s.' % (
msg, errname))
LOG().info('Successfully created mount: %s', msg)
def mount_delete(ns, target):
"""
Unmount filesystem.
:type target: string
:param target: device path or mountpoint
"""
mnt = ns.LMI_MountedFileSystem.first_instance({'FileSystemSpec':target}) or \
ns.LMI_MountedFileSystem.first_instance({'MountPointPath':target})
if mnt is None:
raise LmiFailed('Target is not mounted: %s.' % target)
service = ns.LMI_MountConfigurationService.first_instance()
# TODO for now
# Mode 32769 == only unmount (don't remove any persistent info)
(ret, _outparams, _err) = service.SyncDeleteMount(Mount=mnt, Mode=32769)
if ret != 0:
raise LmiFailed('Cannot delete mount: %s.' % target)
LOG().info('Successfully deleted mount: %s', target)
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