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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
#!/usr/bin/env python -tt
# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
#
# Copyright (c) 2016 Intel, Inc.
#
# 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; version 2 of the License
#
# 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, write to the Free Software Foundation, Inc., 59
# Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# DESCRIPTION
# This module provides parser for kickstart format
#
# AUTHORS
# Ed Bartosh <ed.bartosh> (at] linux.intel.com>
"""Kickstart parser module."""
import os
import shlex
from argparse import ArgumentParser, ArgumentError, ArgumentTypeError
from wic import msger
from wic.partition import Partition
from wic.utils.misc import find_canned
class KickStartError(Exception):
"""Custom exception."""
pass
class KickStartParser(ArgumentParser):
"""
This class overwrites error method to throw exception
instead of producing usage message(default argparse behavior).
"""
def error(self, message):
raise ArgumentError(None, message)
def sizetype(arg):
"""
Custom type for ArgumentParser
Converts size string in <num>[K|k|M|G] format into the integer value
"""
if arg.isdigit():
return int(arg) * 1024L
if not arg[:-1].isdigit():
raise ArgumentTypeError("Invalid size: %r" % arg)
size = int(arg[:-1])
if arg.endswith("k") or arg.endswith("K"):
return size
if arg.endswith("M"):
return size * 1024L
if arg.endswith("G"):
return size * 1024L * 1024L
raise ArgumentTypeError("Invalid size: %r" % arg)
def overheadtype(arg):
"""
Custom type for ArgumentParser
Converts overhead string to float and checks if it's bigger than 1.0
"""
try:
result = float(arg)
except ValueError:
raise ArgumentTypeError("Invalid value: %r" % arg)
if result < 1.0:
raise ArgumentTypeError("Overhead factor should be > 1.0" % arg)
return result
def cannedpathtype(arg):
"""
Custom type for ArgumentParser
Tries to find file in the list of canned wks paths
"""
scripts_path = os.path.abspath(os.path.dirname(__file__) + '../../..')
result = find_canned(scripts_path, arg)
if not result:
raise ArgumentTypeError("file not found: %s" % arg)
return result
class KickStart(object):
""""Kickstart parser implementation."""
def __init__(self, confpath):
self.partitions = []
self.bootloader = None
self.lineno = 0
self.partnum = 0
parser = KickStartParser()
subparsers = parser.add_subparsers()
part = subparsers.add_parser('part')
part.add_argument('mountpoint')
part.add_argument('--active', action='store_true')
part.add_argument('--align', type=int)
part.add_argument("--extra-space", type=sizetype, default=10*1024L)
part.add_argument('--fsoptions', dest='fsopts')
part.add_argument('--fstype')
part.add_argument('--label')
part.add_argument('--no-table')
part.add_argument('--ondisk', '--ondrive', dest='disk')
part.add_argument("--overhead-factor", type=overheadtype, default=1.3)
part.add_argument('--part-type')
part.add_argument('--rootfs-dir')
part.add_argument('--size', type=sizetype, default=0)
part.add_argument('--source')
part.add_argument('--sourceparams')
part.add_argument('--use-uuid', action='store_true')
part.add_argument('--uuid')
bootloader = subparsers.add_parser('bootloader')
bootloader.add_argument('--append')
bootloader.add_argument('--configfile')
bootloader.add_argument('--ptable', choices=('msdos', 'gpt'),
default='msdos')
bootloader.add_argument('--timeout', type=int)
bootloader.add_argument('--source')
include = subparsers.add_parser('include')
include.add_argument('path', type=cannedpathtype)
self._parse(parser, confpath)
if not self.bootloader:
msger.warning('bootloader config not specified, using defaults')
self.bootloader = bootloader.parse_args([])
def _parse(self, parser, confpath):
"""
Parse file in .wks format using provided parser.
"""
with open(confpath) as conf:
lineno = 0
for line in conf:
line = line.strip()
lineno += 1
if line and line[0] != '#':
try:
parsed = parser.parse_args(shlex.split(line))
except ArgumentError as err:
raise KickStartError('%s:%d: %s' % \
(confpath, lineno, err))
if line.startswith('part'):
self.partnum += 1
self.partitions.append(Partition(parsed, self.partnum))
elif line.startswith('include'):
self._parse(parser, parsed.path)
elif line.startswith('bootloader'):
if not self.bootloader:
self.bootloader = parsed
else:
err = "%s:%d: more than one bootloader specified" \
% (confpath, lineno)
raise KickStartError(err)
|
