img_from_target_files.py revision 8b72aefb5a8ed4da28c6f83854e8babf53b9cb53 
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  -z  (--bootable_zip)
24      Include only the bootable images (eg 'boot' and 'recovery') in
25      the output.
26
27"""
28
29import sys
30
31if sys.hexversion < 0x02070000:
32  print >> sys.stderr, "Python 2.7 or newer is required."
33  sys.exit(1)
34
35import os
36import shutil
37import zipfile
38
39import common
40
41OPTIONS = common.OPTIONS
42
43
44def CopyInfo(output_zip):
45  """Copy the android-info.txt file from the input to the output."""
46  output_zip.write(os.path.join(OPTIONS.input_tmp, "OTA", "android-info.txt"),
47                   "android-info.txt")
48
49
50def main(argv):
51  bootable_only = [False]
52
53  def option_handler(o, _):
54    if o in ("-z", "--bootable_zip"):
55      bootable_only[0] = True
56    else:
57      return False
58    return True
59
60  args = common.ParseOptions(argv, __doc__,
61                             extra_opts="z",
62                             extra_long_opts=["bootable_zip"],
63                             extra_option_handler=option_handler)
64
65  bootable_only = bootable_only[0]
66
67  if len(args) != 2:
68    common.Usage(__doc__)
69    sys.exit(1)
70
71  OPTIONS.input_tmp, input_zip = common.UnzipTemp(args[0])
72  output_zip = zipfile.ZipFile(args[1], "w", compression=zipfile.ZIP_DEFLATED)
73  CopyInfo(output_zip)
74
75  try:
76    done = False
77    images_path = os.path.join(OPTIONS.input_tmp, "IMAGES")
78    if os.path.exists(images_path):
79      # If this is a new target-files, it already contains the images,
80      # and all we have to do is copy them to the output zip.
81      images = os.listdir(images_path)
82      if images:
83        for image in images:
84          if bootable_only and image not in ("boot.img", "recovery.img"):
85            continue
86          if not image.endswith(".img"):
87            continue
88          common.ZipWrite(
89              output_zip, os.path.join(images_path, image), image)
90        done = True
91
92    if not done:
93      # We have an old target-files that doesn't already contain the
94      # images, so build them.
95      import add_img_to_target_files
96
97      OPTIONS.info_dict = common.LoadInfoDict(input_zip)
98
99      # If this image was originally labelled with SELinux contexts,
100      # make sure we also apply the labels in our new image. During
101      # building, the "file_contexts" is in the out/ directory tree,
102      # but for repacking from target-files.zip it's in the root
103      # directory of the ramdisk.
104      if "selinux_fc" in OPTIONS.info_dict:
105        OPTIONS.info_dict["selinux_fc"] = os.path.join(
106            OPTIONS.input_tmp, "BOOT", "RAMDISK", "file_contexts")
107
108      boot_image = common.GetBootableImage(
109          "boot.img", "boot.img", OPTIONS.input_tmp, "BOOT")
110      if boot_image:
111        boot_image.AddToZip(output_zip)
112      recovery_image = common.GetBootableImage(
113          "recovery.img", "recovery.img", OPTIONS.input_tmp, "RECOVERY")
114      if recovery_image:
115        recovery_image.AddToZip(output_zip)
116
117      def banner(s):
118        print "\n\n++++ " + s + " ++++\n\n"
119
120      if not bootable_only:
121        banner("AddSystem")
122        add_img_to_target_files.AddSystem(output_zip, prefix="")
123        try:
124          input_zip.getinfo("VENDOR/")
125          banner("AddVendor")
126          add_img_to_target_files.AddVendor(output_zip, prefix="")
127        except KeyError:
128          pass   # no vendor partition for this device
129        banner("AddUserdata")
130        add_img_to_target_files.AddUserdata(output_zip, prefix="")
131        banner("AddCache")
132        add_img_to_target_files.AddCache(output_zip, prefix="")
133
134  finally:
135    print "cleaning up..."
136    # http://b/18015246
137    # See common.py for context.  zipfile also refers to ZIP64_LIMIT during
138    # close() when it writes out the central directory.
139    saved_zip64_limit = zipfile.ZIP64_LIMIT
140    zipfile.ZIP64_LIMIT = (1 << 32) - 1
141    output_zip.close()
142    zipfile.ZIP64_LIMIT = saved_zip64_limit
143    shutil.rmtree(OPTIONS.input_tmp)
144
145  print "done."
146
147
148if __name__ == '__main__':
149  try:
150    common.CloseInheritedPipes()
151    main(sys.argv[1:])
152  except common.ExternalError as e:
153    print
154    print "   ERROR: %s" % (e,)
155    print
156    sys.exit(1)
157