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nexedi
slapos.core
Commits
4e5c2e86
Commit
4e5c2e86
authored
Sep 05, 2018
by
Rafael Monnerat
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slapos.core: Include new plugin for adjust /dev/* permission for kvm
parent
5098540e
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slapos/manager/devperm.py
slapos/manager/devperm.py
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slapos/manager/devperm.py
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4e5c2e86
# coding: utf-8
import
json
import
logging
import
os
import
pwd
import
grp
from
.interface
import
IManager
from
itertools
import
ifilter
from
zope
import
interface
logger
=
logging
.
getLogger
(
__name__
)
def
which
(
exename
):
for
path
in
os
.
environ
[
"PATH"
].
split
(
os
.
pathsep
):
full_path
=
os
.
path
.
join
(
path
,
exename
)
if
os
.
path
.
exists
(
full_path
):
return
full_path
return
None
class
Manager
(
object
):
interface
.
implements
(
IManager
)
disk_device_filename
=
'.slapos-disk-permission'
def
__init__
(
self
,
config
):
"""Manager needs to know config for its functioning.
"""
self
.
config
=
config
def
format
(
self
,
computer
):
"""Method called at `slapos node format` phase.
:param computer: slapos.format.Computer, currently formatted computer
"""
def
formatTearDown
(
self
,
computer
):
"""Method called after `slapos node format` phase.
:param computer: slapos.format.Computer, formatted computer
"""
def
software
(
self
,
software
):
"""Method called at `slapos node software` phase.
:param software: slapos.grid.SlapObject.Software, currently processed software
"""
def
softwareTearDown
(
self
,
software
):
"""Method called after `slapos node software` phase.
:param computer: slapos.grid.SlapObject.Software, processed software
"""
def
instance
(
self
,
partition
):
"""Method called at `slapos node instance` phase.
:param partition: slapos.grid.SlapObject.Partition, currently processed partition
"""
self
.
instanceTearDown
(
partition
)
def
instanceTearDown
(
self
,
partition
):
"""Method called after `slapos node instance` phase.
:param partition: slapos.grid.SlapObject.Partition, processed partition
"""
disk_dev_path
=
os
.
path
.
join
(
partition
.
instance_path
,
self
.
disk_device_filename
)
if
not
os
.
path
.
exists
(
disk_dev_path
):
return
# Read it
with
open
(
disk_dev_path
)
as
f
:
try
:
disk_list
=
json
.
load
(
f
)
except
:
logger
.
warning
(
'Bad disk configuration file'
,
exc_info
=
True
)
return
for
entry
in
disk_list
:
disk
=
entry
.
get
(
"disk"
,
None
)
if
disk
is
None
:
logger
.
warning
(
"Disk is None: %s "
%
disk_list
,
exc_info
=
True
)
continue
if
not
str
(
disk
).
startswith
(
"/dev/"
):
logger
.
warning
(
"Bad disk definition: %s "
%
disk_list
,
exc_info
=
True
)
continue
if
len
(
disk
[
len
(
"/dev/"
):])
>
6
:
logger
.
warning
(
"Bad disk definition: %s "
%
disk_list
,
exc_info
=
True
)
continue
if
not
os
.
path
.
exists
(
disk
):
logger
.
warning
(
"Disk don't exist: %s "
%
disk_list
,
exc_info
=
True
)
continue
uid
=
os
.
stat
(
partition
.
instance_path
).
st_uid
if
os
.
stat
(
disk
).
st_uid
==
uid
:
continue
logger
.
warning
(
"Transfer ownership of %s to %s"
%
(
disk
,
pwd
.
getpwuid
(
uid
).
pw_name
))
os
.
chown
(
disk
,
uid
,
grp
.
getgrnam
(
"disk"
).
gr_gid
)
def
report
(
self
,
partition
):
"""Method called at `slapos node report` phase.
:param partition: slapos.grid.SlapObject.Partition, currently processed partition
"""
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