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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
#!/usr/bin/env python3
#
# Copyright (C) 2017 Codethink Limited
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
#
# Authors:
# Jonathan Maw <jonathan.maw@codethink.co.uk>
"""Dpkg build element
A :mod:`BuildElement <buildstream.buildelement>` implementation for using
dpkg elements
Default Configuration
~~~~~~~~~~~~~~~~~~~~~
The dpkg default configuration:
.. literalinclude:: ../../../buildstream/plugins/elements/dpkg_build.yaml
:language: yaml
Public data
~~~~~~~~~~~
This plugin writes to an element's public data.
split-rules
-----------
This plugin overwrites the element's split-rules with a list of its own
creation, creating a split domain for every package that it detected.
e.g.
.. code:: yaml
public:
split-rules:
foo:
- /sbin/foo
- /usr/bin/bar
bar:
- /etc/quux
dpkg-data
---------
control
'''''''
The control file will be written as raw text into the control field.
e.g.
.. code:: yaml
public:
dpkg-data:
foo:
control: |
Source: foo
Section: blah
Build-depends: bar (>= 1337), baz
...
name
''''
The name of the plugin will be written to the name field.
e.g.
.. code:: yaml
public:
dpkg-data:
foo:
name: foobar
package-scripts
---------------
preinstall, postinstall, prerm and postrm scripts may be written to the
package if they are detected. They are written as raw text. e.g.
.. code:: yaml
public:
package-scripts:
foo:
preinstall: |
#!/usr/bin/bash
/sbin/ldconfig
bar:
postinstall: |
#!/usr/bin/bash
/usr/share/fonts/generate_fonts.sh
"""
import filecmp
import os
import re
from buildstream import BuildElement, utils
# Element implementation for the 'dpkg' kind.
class DpkgElement(BuildElement):
def _get_packages(self, sandbox):
controlfile = os.path.join("debian", "control")
controlpath = os.path.join(
sandbox.get_directory(),
self.get_variable('build-root').lstrip(os.sep),
controlfile
)
with open(controlpath) as f:
return re.findall(r"Package:\s*(.+)\n", f.read())
def assemble(self, sandbox):
# Replace %{packages} if no variable was set
packages = self._get_packages(sandbox)
self.commands = dict([
(group, [
c.replace("<PACKAGES>", " ".join(packages)) for c in commands
])
for group, commands in self.commands.items()
])
collectdir = super().assemble(sandbox)
bad_overlaps = set()
new_split_rules = {}
new_dpkg_data = {}
new_package_scripts = {}
for package in packages:
package_path = os.path.join(sandbox.get_directory(),
self.get_variable('build-root').lstrip(os.sep),
'debian', package)
# Exclude DEBIAN files because they're pulled in as public metadata
contents = [x for x in utils.list_relative_paths(package_path)
if x != "." and not x.startswith("DEBIAN")]
new_split_rules[package] = contents
# Check for any overlapping files that are different.
# Since we're storing all these files together, we need to warn
# because clobbering is bad!
for content_file in contents:
for split_package, split_contents in new_split_rules.items():
for split_file in split_contents:
content_file_path = os.path.join(package_path,
content_file.lstrip(os.sep))
split_file_path = os.path.join(os.path.dirname(package_path),
split_package,
split_file.lstrip(os.sep))
if (content_file == split_file and
os.path.isfile(content_file_path) and
not filecmp.cmp(content_file_path, split_file_path)):
bad_overlaps.add(content_file)
# Store /DEBIAN metadata for each package.
# DEBIAN/control goes into bst.dpkg-data.<package>.control
controlpath = os.path.join(package_path, "DEBIAN", "control")
if not os.path.exists(controlpath):
self.error("{}: package {} doesn't have a DEBIAN/control in {}!"
.format(self.name, package, package_path))
with open(controlpath, "r") as f:
controldata = f.read()
new_dpkg_data[package] = {"control": controldata, "name": package}
# DEBIAN/{pre,post}{inst,rm} scripts go into bst.package-scripts.<package>.<script>
scriptfiles = ["preinst", "postinst", "prerm", "postrm"]
for s in scriptfiles:
path = os.path.join(package_path, "DEBIAN", s)
if os.path.exists(path):
if package not in new_package_scripts:
new_package_scripts[package] = {}
with open(path, "r") as f:
data = f.read()
new_package_scripts[package][s] = data
bstdata = self.get_public_data("bst")
bstdata["split-rules"] = new_split_rules
bstdata["dpkg-data"] = new_dpkg_data
if new_package_scripts:
bstdata["package-scripts"] = new_package_scripts
self.set_public_data("bst", bstdata)
if bad_overlaps:
self.warn("Destructive overlaps found in some files!", "\n".join(bad_overlaps))
return collectdir
# Plugin entry point
def setup():
return DpkgElement
|