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
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# vmsquash-tar.py
#
# Copyright 2015 Neil Williams <codehelp@debian.org>
#
# 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/>.
import os
import sys
import shutil
import cliapp
import logging
import tempfile
from vmdebootstrap.base import runcmd
from vmdebootstrap.filesystem import Filesystem
__version__ = '0.1'
__desc__ = "Helper to make a squashfs from a tarball."
# pylint: disable=missing-docstring
class VmSquash(cliapp.Application):
def __init__(
self, progname=None,
version=__version__, description=__desc__, epilog=None):
super(VmSquash, self).__init__(
progname, version,
description, epilog)
self.rootdir = None
self.filesystem = Filesystem()
def add_settings(self):
self.settings.boolean(['verbose'], 'report what is going on')
self.settings.string(['squash'], 'directory for squashfs ',
'and boot files', metavar='DIRECTORY')
self.settings.string(['roottype'], 'specify file system type for /', default='ext4')
self.settings.string(['tarball'], "tarball of the filesystem",
metavar='FILE')
def message(self, msg):
logging.info(msg)
if self.settings['verbose']:
print msg
def process_args(self, args):
"""
Unpack a tarball of the disk's contents,
shell out to runcmd since it more easily handles rootdir.
Then run the vmdebootstrap Filesystem squash_rootfs.
"""
# unpacking tarballs containing device nodes needs root
if os.geteuid() != 0:
sys.exit("You need to have root privileges to run this script.")
self.filesystem.define_settings(self.settings)
rootdir = tempfile.mkdtemp()
logging.debug('mkdir %s', rootdir)
self.message('Unpacking tarball of disk contents')
self.filesystem.devices['rootdir'] = rootdir
runcmd(['tar', '-xf', self.settings['tarball'], '-C', rootdir])
# set rootdir in self.devices
self.devices = {
'rootdir': rootdir,
}
self.filesystem.squash_rootfs()
shutil.rmtree(rootdir)
def main():
VmSquash(version=__version__).run()
return 0
if __name__ == '__main__':
main()
sys.exit()
|
