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1#!/usr/bin/env python
2#
3# Copyright (C) 2008 The Android Open Source Project
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#      http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17"""
18Given a target-files zipfile, produces an image zipfile suitable for
19use with 'fastboot update'.
20
21Usage:  img_from_target_files [flags] input_target_files output_image_zip
22
23  -b  (--board_config)  <file>
24      Deprecated.
25
26  -z  (--bootable_zip)
27      Include only the bootable images (eg 'boot' and 'recovery') in
28      the output.
29
30"""
31
32import sys
33
34if sys.hexversion < 0x02040000:
35  print >> sys.stderr, "Python 2.4 or newer is required."
36  sys.exit(1)
37
38import errno
39import os
40import re
41import shutil
42import subprocess
43import tempfile
44import zipfile
45
46# missing in Python 2.4 and before
47if not hasattr(os, "SEEK_SET"):
48  os.SEEK_SET = 0
49
50import build_image
51import common
52
53OPTIONS = common.OPTIONS
54
55def AddUserdata(output_zip):
56  """Create an empty userdata image and store it in output_zip."""
57
58  print "creating userdata.img..."
59
60  # The name of the directory it is making an image out of matters to
61  # mkyaffs2image.  So we create a temp dir, and within it we create an
62  # empty dir named "data", and build the image from that.
63  temp_dir = tempfile.mkdtemp()
64  user_dir = os.path.join(temp_dir, "data")
65  os.mkdir(user_dir)
66  img = tempfile.NamedTemporaryFile()
67
68  image_props = build_image.ImagePropFromGlobalDict(OPTIONS.info_dict,
69                                                    "data")
70  fstab = OPTIONS.info_dict["fstab"]
71  if fstab:
72    image_props["fs_type" ] = fstab["/data"].fs_type
73  succ = build_image.BuildImage(user_dir, image_props, img.name)
74  assert succ, "build userdata.img image failed"
75
76  common.CheckSize(img.name, "userdata.img", OPTIONS.info_dict)
77  output_zip.write(img.name, "userdata.img")
78  img.close()
79  os.rmdir(user_dir)
80  os.rmdir(temp_dir)
81
82
83def AddCache(output_zip):
84  """Create an empty cache image and store it in output_zip."""
85
86  image_props = build_image.ImagePropFromGlobalDict(OPTIONS.info_dict,
87                                                    "cache")
88  # The build system has to explicitly request for cache.img.
89  if "fs_type" not in image_props:
90    return
91
92  print "creating cache.img..."
93
94  # The name of the directory it is making an image out of matters to
95  # mkyaffs2image.  So we create a temp dir, and within it we create an
96  # empty dir named "cache", and build the image from that.
97  temp_dir = tempfile.mkdtemp()
98  user_dir = os.path.join(temp_dir, "cache")
99  os.mkdir(user_dir)
100  img = tempfile.NamedTemporaryFile()
101
102  fstab = OPTIONS.info_dict["fstab"]
103  if fstab:
104    image_props["fs_type" ] = fstab["/cache"].fs_type
105  succ = build_image.BuildImage(user_dir, image_props, img.name)
106  assert succ, "build cache.img image failed"
107
108  common.CheckSize(img.name, "cache.img", OPTIONS.info_dict)
109  output_zip.write(img.name, "cache.img")
110  img.close()
111  os.rmdir(user_dir)
112  os.rmdir(temp_dir)
113
114
115def AddSystem(output_zip):
116  """Turn the contents of SYSTEM into a system image and store it in
117  output_zip."""
118
119  print "creating system.img..."
120
121  img = tempfile.NamedTemporaryFile()
122
123  # The name of the directory it is making an image out of matters to
124  # mkyaffs2image.  It wants "system" but we have a directory named
125  # "SYSTEM", so create a symlink.
126  try:
127    os.symlink(os.path.join(OPTIONS.input_tmp, "SYSTEM"),
128               os.path.join(OPTIONS.input_tmp, "system"))
129  except OSError, e:
130      # bogus error on my mac version?
131      #   File "./build/tools/releasetools/img_from_target_files", line 86, in AddSystem
132      #     os.path.join(OPTIONS.input_tmp, "system"))
133      # OSError: [Errno 17] File exists
134    if (e.errno == errno.EEXIST):
135      pass
136
137  image_props = build_image.ImagePropFromGlobalDict(OPTIONS.info_dict,
138                                                    "system")
139  fstab = OPTIONS.info_dict["fstab"]
140  if fstab:
141    image_props["fs_type" ] = fstab["/system"].fs_type
142  succ = build_image.BuildImage(os.path.join(OPTIONS.input_tmp, "system"),
143                                image_props, img.name)
144  assert succ, "build system.img image failed"
145
146  img.seek(os.SEEK_SET, 0)
147  data = img.read()
148  img.close()
149
150  common.CheckSize(data, "system.img", OPTIONS.info_dict)
151  common.ZipWriteStr(output_zip, "system.img", data)
152
153
154def CopyInfo(output_zip):
155  """Copy the android-info.txt file from the input to the output."""
156  output_zip.write(os.path.join(OPTIONS.input_tmp, "OTA", "android-info.txt"),
157                   "android-info.txt")
158
159
160def main(argv):
161  bootable_only = [False]
162
163  def option_handler(o, a):
164    if o in ("-b", "--board_config"):
165      pass       # deprecated
166    if o in ("-z", "--bootable_zip"):
167      bootable_only[0] = True
168    else:
169      return False
170    return True
171
172  args = common.ParseOptions(argv, __doc__,
173                             extra_opts="b:z",
174                             extra_long_opts=["board_config=",
175                                              "bootable_zip"],
176                             extra_option_handler=option_handler)
177
178  bootable_only = bootable_only[0]
179
180  if len(args) != 2:
181    common.Usage(__doc__)
182    sys.exit(1)
183
184  OPTIONS.input_tmp, input_zip = common.UnzipTemp(args[0])
185  OPTIONS.info_dict = common.LoadInfoDict(input_zip)
186
187  output_zip = zipfile.ZipFile(args[1], "w", compression=zipfile.ZIP_DEFLATED)
188
189  common.GetBootableImage(
190      "boot.img", "boot.img", OPTIONS.input_tmp, "BOOT").AddToZip(output_zip)
191  common.GetBootableImage(
192      "recovery.img", "recovery.img", OPTIONS.input_tmp,
193      "RECOVERY").AddToZip(output_zip)
194
195  if not bootable_only:
196    AddSystem(output_zip)
197    AddUserdata(output_zip)
198    AddCache(output_zip)
199    CopyInfo(output_zip)
200
201  print "cleaning up..."
202  output_zip.close()
203  shutil.rmtree(OPTIONS.input_tmp)
204
205  print "done."
206
207
208if __name__ == '__main__':
209  try:
210    common.CloseInheritedPipes()
211    main(sys.argv[1:])
212  except common.ExternalError, e:
213    print
214    print "   ERROR: %s" % (e,)
215    print
216    sys.exit(1)
217