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# Authors: # Rob Crittenden <rcritten@redhat.com> # Pavel Zuna <pzuna@redhat.com> # # Copyright (C) 2008 Red Hat # see file 'COPYING' for use and warranty information # # This program 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. # # This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
Automount
Stores automount(8) configuration for autofs(8) in IPA.
The base of an automount configuration is the configuration file auto.master. This is also the base location in IPA. Multiple auto.master configurations can be stored in separate locations. A location is implementation-specific with the default being a location named 'default'. For example, you can have locations by geographic region, by floor, by type, etc.
Automount has three basic object types: locations, maps and keys.
A location defines a set of maps anchored in auto.master. This allows you to store multiple automount configurations. A location in itself isn't very interesting, it is just a point to start a new automount map.
A map is roughly equivalent to a discrete automount file and provides storage for keys.
A key is a mount point associated with a map.
When a new location is created, two maps are automatically created for it: auto.master and auto.direct. auto.master is the root map for all automount maps for the location. auto.direct is the default map for direct mounts and is mounted on /-.
An automount map may contain a submount key. This key defines a mount location within the map that references another map. This can be done either using automountmap-add-indirect --parentmap or manually with automountkey-add and setting info to "-type=autofs :<mapname>".
EXAMPLES:
Locations:
Create a named location, "Baltimore": ipa automountlocation-add baltimore
Display the new location: ipa automountlocation-show baltimore
Find available locations: ipa automountlocation-find
Remove a named automount location: ipa automountlocation-del baltimore
Show what the automount maps would look like if they were in the filesystem: ipa automountlocation-tofiles baltimore
Import an existing configuration into a location: ipa automountlocation-import baltimore /etc/auto.master
The import will fail if any duplicate entries are found. For continuous operation where errors are ignored, use the --continue option.
Maps:
Create a new map, "auto.share": ipa automountmap-add baltimore auto.share
Display the new map: ipa automountmap-show baltimore auto.share
Find maps in the location baltimore: ipa automountmap-find baltimore
Create an indirect map with auto.share as a submount: ipa automountmap-add-indirect baltimore --parentmap=auto.share --mount=sub auto.man
This is equivalent to:
ipa automountmap-add-indirect baltimore --mount=/man auto.man ipa automountkey-add baltimore auto.man --key=sub --info="-fstype=autofs ldap:auto.share"
Remove the auto.share map: ipa automountmap-del baltimore auto.share
Keys:
Create a new key for the auto.share map in location baltimore. This ties the map we previously created to auto.master: ipa automountkey-add baltimore auto.master --key=/share --info=auto.share
Create a new key for our auto.share map, an NFS mount for man pages: ipa automountkey-add baltimore auto.share --key=man --info="-ro,soft,rsize=8192,wsize=8192 ipa.example.com:/shared/man"
Find all keys for the auto.share map: ipa automountkey-find baltimore auto.share
Find all direct automount keys: ipa automountkey-find baltimore --key=/-
Remove the man key from the auto.share map: ipa automountkey-del baltimore auto.share --key=man """)
""" Developer notes:
RFC 2707bis http://www.padl.com/~lukeh/rfc2307bis.txt
A few notes on automount: - The default parent when adding an indirect map is auto.master - This uses the short format for automount maps instead of the URL format. Support for ldap as a map source in nsswitch.conf was added in autofs version 4.1.3-197. Any version prior to that is not expected to work. - An indirect key should not begin with /
As an example, the following automount files:
auto.master: /- auto.direct /mnt auto.mnt
auto.mnt: stuff -ro,soft,rsize=8192,wsize=8192 nfs.example.com:/vol/archive/stuff
are equivalent to the following LDAP entries:
# auto.master, automount, example.com dn: automountmapname=auto.master,cn=automount,dc=example,dc=com objectClass: automountMap objectClass: top automountMapName: auto.master
# auto.direct, automount, example.com dn: automountmapname=auto.direct,cn=automount,dc=example,dc=com objectClass: automountMap objectClass: top automountMapName: auto.direct
# /-, auto.master, automount, example.com dn: automountkey=/-,automountmapname=auto.master,cn=automount,dc=example,dc=co m objectClass: automount objectClass: top automountKey: /- automountInformation: auto.direct
# auto.mnt, automount, example.com dn: automountmapname=auto.mnt,cn=automount,dc=example,dc=com objectClass: automountMap objectClass: top automountMapName: auto.mnt
# /mnt, auto.master, automount, example.com dn: automountkey=/mnt,automountmapname=auto.master,cn=automount,dc=example,dc= com objectClass: automount objectClass: top automountKey: /mnt automountInformation: auto.mnt
# stuff, auto.mnt, automount, example.com dn: automountkey=stuff,automountmapname=auto.mnt,cn=automount,dc=example,dc=com objectClass: automount objectClass: top automountKey: stuff automountInformation: -ro,soft,rsize=8192,wsize=8192 nfs.example.com:/vol/arch ive/stuff
"""
""" Location container for automount maps. """
Str('cn', cli_name='location', label=_('Location'), doc=_('Automount location name.'), primary_key=True, ), )
# create auto.master for the new location
# add additional pre-created maps and keys # IMPORTANT: add pre-created maps/keys to DEFAULT_MAPS/DEFAULT_KEYS # so that they do not cause conflicts during import operation keys[-1], u'auto.direct', key=DIRECT_MAP_KEY )
'%(count)d automount location matched', '%(count)d automount locations matched', 0 )
# maps, truncated # TODO: handle truncated results # ?use ldap.find_entries instead of automountkey_find?
# TODO: handle truncated results, same as above
# Collect all the keys for the orphaned maps
orphanmaps=orphanmaps, orphankeys=orphankeys))
textui.print_plain( '%s\t%s' % ( m['automountkey'][0], m['automountinformation'][0] ) ) else: '%s\t/etc/%s' % ( m['automountkey'][0], m['automountinformation'][0] ) ) continue '%s\t%s' % ( k['automountkey'][0], k['automountinformation'][0] ) )
'%s\t%s' % ( k[0]['automountkey'][0], k[0]['automountinformation'][0] ) )
Str('masterfile', label=_('Master file'), doc=_('Automount master file.'), ), )
Flag('continue?', cli_name='continue', doc=_('Continuous operation mode. Errors are reported but the process continues.'), ), )
except IOError, e: if e.errno == 2: raise errors.NotFound( reason=_('File %(file)s not found') % {'file': filename} ) else: raise
""" The basic idea is to read the master file and create all the maps we need, then read each map file and add all the keys for the map. """
continue result['skipped'].append([m,args[1]]) continue continue continue
# Add a new key to the auto.master map for the new map file args[0], u'auto.master', automountkey=unicode(am[0]), automountinformation=unicode(' '.join(am[1:]))) # ignore conflict when the key was pre-created by the framework elif options.get('continue', False): result['duplicatekeys'].append(am[0]) pass else: raise errors.DuplicateEntry( message=_('key %(key)s already exists') % dict( key=am[0])) # Add the new map # ignore conflict when the map was pre-created by the framework elif options.get('continue', False): result['duplicatemaps'].append(am[0]) pass else: raise errors.DuplicateEntry( message=_('map %(map)s already exists') % dict( map=am[1])) except errors.DuplicateEntry: # This means the same map is used on several mount points. pass
# Now iterate over the map files and add the keys. To handle # continuation lines I'll make a pass through it to skip comments # etc and also to combine lines. continue result['skipped'].append([m, maps[m]]) continue if x.endswith("\\"): cont = cont + x[:-1] + ' ' else: lines.append(cont + x) cont='' am = x.split(None) key = unicode(am[0].replace('"','')) try: api.Command['automountkey_add']( args[0], unicode(m), automountkey=key, automountinformation=unicode(' '.join(am[1:]))) result['keys'].append([key,m]) except errors.DuplicateEntry, e: if options.get('continue', False): result['duplicatekeys'].append(am[0]) pass else: raise e
maps = result['result']['maps'] keys = result['result']['keys'] duplicatemaps = result['result']['duplicatemaps'] duplicatekeys = result['result']['duplicatekeys'] skipped = result['result']['skipped']
textui.print_plain('Imported maps:') for m in maps: textui.print_plain( 'Added %s' % m ) textui.print_plain('')
textui.print_plain('Imported keys:') for k in keys: textui.print_plain( 'Added %s to %s' % ( k[0], k[1] ) ) textui.print_plain('')
if len(skipped) > 0: textui.print_plain('Ignored keys:') for k in skipped: textui.print_plain( 'Ignored %s to %s' % ( k[0], k[1] ) )
if options.get('continue', False) and len(duplicatemaps) > 0: textui.print_plain('') textui.print_plain('Duplicate maps skipped:') for m in duplicatemaps: textui.print_plain( 'Skipped %s' % m )
if options.get('continue', False) and len(duplicatekeys) > 0: textui.print_plain('') textui.print_plain('Duplicate keys skipped:') for k in duplicatekeys: textui.print_plain( 'Skipped %s' % k )
""" Automount map object. """
IA5Str('automountmapname', cli_name='map', label=_('Map'), doc=_('Automount map name.'), primary_key=True, ), Str('description?', cli_name='desc', label=_('Description'), ), )
# delete optional parental connection (direct maps may not have this) 'automountinformation', keys[0], 'automount', base_dn=self.obj.container_dn ) ldap.delete_entry(dn_)
'%(count)d automount map matched', '%(count)d automount maps matched', 0 )
'automountkey', 'automountinformation', 'description' ]
IA5Str('automountkey', cli_name='key', label=_('Key'), doc=_('Automount key name.'), flags=('req_update',), ), IA5Str('automountinformation', cli_name='info', label=_('Mount information'), ), Str('description', label=_('description'), primary_key=True, required=False, flags=['no_create', 'no_update', 'no_search', 'no_output'], exclude='webui', ), )
# all commands except for create send pk in keys, too # create cannot due to validation in frontend.py except KeyError: raise ValueError('Not enough keys and pkey not in kwargs') else:
self.primary_key.name, pkey, parent_dn ) # If we're doing an add then just return the dn we created, there # is no need to check for it. # We had an older mechanism where description consisted of # 'automountkey automountinformation' so we could support multiple # direct maps. This made showing keys nearly impossible since it # required automountinfo to show, which if you had you didn't need # to look at the key. We still support existing entries but now # only create this type of dn when the key is /- # # First we look with the information given, then try to search for # the right entry. dn, ['*'], normalize=self.normalize_dn ) (kwargs['automountkey'], kwargs['automountinformation']) else: sfilter = '(automountkey=%s)' % kwargs['automountkey'] basedn, _ldap.SCOPE_ONELEVEL) if len(entries) > 1: raise errors.NotFound(reason=_('More than one entry with key %(key)s found, use --info to select specific entry.') % dict(key=pkey)) if truncated: raise errors.LimitsExceeded() dn = entries[0][0]
pkey = keys[-1] key = pkey.split(self.rdn_separator)[0] info = self.rdn_separator.join(pkey.split(self.rdn_separator)[1:]) raise errors.NotFound( reason=self.object_not_found_msg % { 'key': key, 'info': info, } )
message=self.already_exists_msg % { 'key': key, 'info': info, } ) else: message=self.key_already_exists_msg % { 'key': key, } )
else:
return
Str('key', cli_name='mount', label=_('Mount point'), ), Str('parentmap?', cli_name='parentmap', label=_('Parent map'), doc=_('Name of parent automount map (default: auto.master).'), default=u'auto.master', autofill=True, ), )
raise errors.ValidationError(name='mount', error=_('mount point is relative to parent map, ' 'cannot begin with /'))
# Ensure the referenced map exists # Add a submount key location, parentmap, automountkey=key, automountinformation='-fstype=autofs ldap:%s' % map) else: # adding to auto.master # Ensure auto.master exists keys[0], u'auto.master', automountkey=key, automountinformation=keys[1]) except Exception: # The key exists, drop the map self.api.Command['automountmap_del'](*keys) raise
IA5Str('automountkey', cli_name='key', label=_('Key'), doc=_('Automount key name.'), ), IA5Str('automountinformation?', cli_name='info', label=_('Mount information'), ), ) # TODO: hide for now - remove in future major release flags=['no_option', 'no_output']) else:
options.get('automountinformation', None)),) options['automountkey'], options.get('automountinformation', None))
IA5Str('newautomountinformation?', cli_name='newinfo', label=_('New mount information'), ), )
# handle RDN changes
# automountinformation attribute of existing LDAP object needs # to be retrieved so that RDN can be generated dn = self.obj.get_dn(*keys, **options) (dn_, entry_attrs_) = ldap.get_entry(dn, ['automountinformation']) new_info = entry_attrs_.get('automountinformation', [])[0]
# automounkey attribute cannot be overwritten so that get_dn() # still works right
'%(count)d automount key matched', '%(count)d automount keys matched', 0 )
IA5Str('automountkey', cli_name='key', label=_('Key'), doc=_('Automount key name.'), ), IA5Str('automountinformation?', cli_name='info', label=_('Mount information'), ), )
options.get('automountinformation', None)), ) options['automountkey'], options.get('automountinformation', None))
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