Make releasetools pylint clean.
This caught a few bugs/syntax errors (a few character classes were not
escaped properly in regex patterns, some indentation was illegal,
etc).
Change-Id: I50637607524e68c4fb9cad7167f58a46b8d26b2c
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
new file mode 100755
index 0000000..26fbaf0
--- /dev/null
+++ b/tools/releasetools/ota_from_target_files.py
@@ -0,0 +1,1602 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2008 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Given a target-files zipfile, produces an OTA package that installs
+that build. An incremental OTA is produced if -i is given, otherwise
+a full OTA is produced.
+
+Usage: ota_from_target_files [flags] input_target_files output_ota_package
+
+ --board_config <file>
+ Deprecated.
+
+ -k (--package_key) <key> Key to use to sign the package (default is
+ the value of default_system_dev_certificate from the input
+ target-files's META/misc_info.txt, or
+ "build/target/product/security/testkey" if that value is not
+ specified).
+
+ For incremental OTAs, the default value is based on the source
+ target-file, not the target build.
+
+ -i (--incremental_from) <file>
+ Generate an incremental OTA using the given target-files zip as
+ the starting build.
+
+ -v (--verify)
+ Remount and verify the checksums of the files written to the
+ system and vendor (if used) partitions. Incremental builds only.
+
+ -o (--oem_settings) <file>
+ Use the file to specify the expected OEM-specific properties
+ on the OEM partition of the intended device.
+
+ -w (--wipe_user_data)
+ Generate an OTA package that will wipe the user data partition
+ when installed.
+
+ -n (--no_prereq)
+ Omit the timestamp prereq check normally included at the top of
+ the build scripts (used for developer OTA packages which
+ legitimately need to go back and forth).
+
+ -e (--extra_script) <file>
+ Insert the contents of file at the end of the update script.
+
+ -a (--aslr_mode) <on|off>
+ Specify whether to turn on ASLR for the package (on by default).
+
+ -2 (--two_step)
+ Generate a 'two-step' OTA package, where recovery is updated
+ first, so that any changes made to the system partition are done
+ using the new recovery (new kernel, etc.).
+
+ --block
+ Generate a block-based OTA if possible. Will fall back to a
+ file-based OTA if the target_files is older and doesn't support
+ block-based OTAs.
+
+ -b (--binary) <file>
+ Use the given binary as the update-binary in the output package,
+ instead of the binary in the build's target_files. Use for
+ development only.
+
+ -t (--worker_threads) <int>
+ Specifies the number of worker-threads that will be used when
+ generating patches for incremental updates (defaults to 3).
+
+"""
+
+import sys
+
+if sys.hexversion < 0x02070000:
+ print >> sys.stderr, "Python 2.7 or newer is required."
+ sys.exit(1)
+
+import copy
+import multiprocessing
+import os
+import tempfile
+import zipfile
+
+import common
+import edify_generator
+import sparse_img
+
+OPTIONS = common.OPTIONS
+OPTIONS.package_key = None
+OPTIONS.incremental_source = None
+OPTIONS.verify = False
+OPTIONS.require_verbatim = set()
+OPTIONS.prohibit_verbatim = set(("system/build.prop",))
+OPTIONS.patch_threshold = 0.95
+OPTIONS.wipe_user_data = False
+OPTIONS.omit_prereq = False
+OPTIONS.extra_script = None
+OPTIONS.aslr_mode = True
+OPTIONS.worker_threads = multiprocessing.cpu_count() // 2
+if OPTIONS.worker_threads == 0:
+ OPTIONS.worker_threads = 1
+OPTIONS.two_step = False
+OPTIONS.no_signing = False
+OPTIONS.block_based = False
+OPTIONS.updater_binary = None
+OPTIONS.oem_source = None
+OPTIONS.fallback_to_full = True
+
+def MostPopularKey(d, default):
+ """Given a dict, return the key corresponding to the largest
+ value. Returns 'default' if the dict is empty."""
+ x = [(v, k) for (k, v) in d.iteritems()]
+ if not x:
+ return default
+ x.sort()
+ return x[-1][1]
+
+
+def IsSymlink(info):
+ """Return true if the zipfile.ZipInfo object passed in represents a
+ symlink."""
+ return (info.external_attr >> 16) == 0o120777
+
+def IsRegular(info):
+ """Return true if the zipfile.ZipInfo object passed in represents a
+ symlink."""
+ return (info.external_attr >> 28) == 0o10
+
+def ClosestFileMatch(src, tgtfiles, existing):
+ """Returns the closest file match between a source file and list
+ of potential matches. The exact filename match is preferred,
+ then the sha1 is searched for, and finally a file with the same
+ basename is evaluated. Rename support in the updater-binary is
+ required for the latter checks to be used."""
+
+ result = tgtfiles.get("path:" + src.name)
+ if result is not None:
+ return result
+
+ if not OPTIONS.target_info_dict.get("update_rename_support", False):
+ return None
+
+ if src.size < 1000:
+ return None
+
+ result = tgtfiles.get("sha1:" + src.sha1)
+ if result is not None and existing.get(result.name) is None:
+ return result
+ result = tgtfiles.get("file:" + src.name.split("/")[-1])
+ if result is not None and existing.get(result.name) is None:
+ return result
+ return None
+
+class ItemSet(object):
+ def __init__(self, partition, fs_config):
+ self.partition = partition
+ self.fs_config = fs_config
+ self.ITEMS = {}
+
+ def Get(self, name, is_dir=False):
+ if name not in self.ITEMS:
+ self.ITEMS[name] = Item(self, name, is_dir=is_dir)
+ return self.ITEMS[name]
+
+ def GetMetadata(self, input_zip):
+ # The target_files contains a record of what the uid,
+ # gid, and mode are supposed to be.
+ output = input_zip.read(self.fs_config)
+
+ for line in output.split("\n"):
+ if not line:
+ continue
+ columns = line.split()
+ name, uid, gid, mode = columns[:4]
+ selabel = None
+ capabilities = None
+
+ # After the first 4 columns, there are a series of key=value
+ # pairs. Extract out the fields we care about.
+ for element in columns[4:]:
+ key, value = element.split("=")
+ if key == "selabel":
+ selabel = value
+ if key == "capabilities":
+ capabilities = value
+
+ i = self.ITEMS.get(name, None)
+ if i is not None:
+ i.uid = int(uid)
+ i.gid = int(gid)
+ i.mode = int(mode, 8)
+ i.selabel = selabel
+ i.capabilities = capabilities
+ if i.is_dir:
+ i.children.sort(key=lambda i: i.name)
+
+ # set metadata for the files generated by this script.
+ i = self.ITEMS.get("system/recovery-from-boot.p", None)
+ if i:
+ i.uid, i.gid, i.mode, i.selabel, i.capabilities = 0, 0, 0o644, None, None
+ i = self.ITEMS.get("system/etc/install-recovery.sh", None)
+ if i:
+ i.uid, i.gid, i.mode, i.selabel, i.capabilities = 0, 0, 0o544, None, None
+
+
+class Item(object):
+ """Items represent the metadata (user, group, mode) of files and
+ directories in the system image."""
+ def __init__(self, itemset, name, is_dir=False):
+ self.itemset = itemset
+ self.name = name
+ self.uid = None
+ self.gid = None
+ self.mode = None
+ self.selabel = None
+ self.capabilities = None
+ self.is_dir = is_dir
+ self.descendants = None
+ self.best_subtree = None
+
+ if name:
+ self.parent = itemset.Get(os.path.dirname(name), is_dir=True)
+ self.parent.children.append(self)
+ else:
+ self.parent = None
+ if self.is_dir:
+ self.children = []
+
+ def Dump(self, indent=0):
+ if self.uid is not None:
+ print "%s%s %d %d %o" % (
+ " " * indent, self.name, self.uid, self.gid, self.mode)
+ else:
+ print "%s%s %s %s %s" % (
+ " " * indent, self.name, self.uid, self.gid, self.mode)
+ if self.is_dir:
+ print "%s%s" % (" "*indent, self.descendants)
+ print "%s%s" % (" "*indent, self.best_subtree)
+ for i in self.children:
+ i.Dump(indent=indent+1)
+
+ def CountChildMetadata(self):
+ """Count up the (uid, gid, mode, selabel, capabilities) tuples for
+ all children and determine the best strategy for using set_perm_recursive
+ and set_perm to correctly chown/chmod all the files to their desired
+ values. Recursively calls itself for all descendants.
+
+ Returns a dict of {(uid, gid, dmode, fmode, selabel, capabilities): count}
+ counting up all descendants of this node. (dmode or fmode may be None.)
+ Also sets the best_subtree of each directory Item to the (uid, gid, dmode,
+ fmode, selabel, capabilities) tuple that will match the most descendants of
+ that Item.
+ """
+
+ assert self.is_dir
+ key = (self.uid, self.gid, self.mode, None, self.selabel,
+ self.capabilities)
+ self.descendants = {key: 1}
+ d = self.descendants
+ for i in self.children:
+ if i.is_dir:
+ for k, v in i.CountChildMetadata().iteritems():
+ d[k] = d.get(k, 0) + v
+ else:
+ k = (i.uid, i.gid, None, i.mode, i.selabel, i.capabilities)
+ d[k] = d.get(k, 0) + 1
+
+ # Find the (uid, gid, dmode, fmode, selabel, capabilities)
+ # tuple that matches the most descendants.
+
+ # First, find the (uid, gid) pair that matches the most
+ # descendants.
+ ug = {}
+ for (uid, gid, _, _, _, _), count in d.iteritems():
+ ug[(uid, gid)] = ug.get((uid, gid), 0) + count
+ ug = MostPopularKey(ug, (0, 0))
+
+ # Now find the dmode, fmode, selabel, and capabilities that match
+ # the most descendants with that (uid, gid), and choose those.
+ best_dmode = (0, 0o755)
+ best_fmode = (0, 0o644)
+ best_selabel = (0, None)
+ best_capabilities = (0, None)
+ for k, count in d.iteritems():
+ if k[:2] != ug:
+ continue
+ if k[2] is not None and count >= best_dmode[0]:
+ best_dmode = (count, k[2])
+ if k[3] is not None and count >= best_fmode[0]:
+ best_fmode = (count, k[3])
+ if k[4] is not None and count >= best_selabel[0]:
+ best_selabel = (count, k[4])
+ if k[5] is not None and count >= best_capabilities[0]:
+ best_capabilities = (count, k[5])
+ self.best_subtree = ug + (
+ best_dmode[1], best_fmode[1], best_selabel[1], best_capabilities[1])
+
+ return d
+
+ def SetPermissions(self, script):
+ """Append set_perm/set_perm_recursive commands to 'script' to
+ set all permissions, users, and groups for the tree of files
+ rooted at 'self'."""
+
+ self.CountChildMetadata()
+
+ def recurse(item, current):
+ # current is the (uid, gid, dmode, fmode, selabel, capabilities) tuple
+ # that the current item (and all its children) have already been set to.
+ # We only need to issue set_perm/set_perm_recursive commands if we're
+ # supposed to be something different.
+ if item.is_dir:
+ if current != item.best_subtree:
+ script.SetPermissionsRecursive("/"+item.name, *item.best_subtree)
+ current = item.best_subtree
+
+ if item.uid != current[0] or item.gid != current[1] or \
+ item.mode != current[2] or item.selabel != current[4] or \
+ item.capabilities != current[5]:
+ script.SetPermissions("/"+item.name, item.uid, item.gid,
+ item.mode, item.selabel, item.capabilities)
+
+ for i in item.children:
+ recurse(i, current)
+ else:
+ if item.uid != current[0] or item.gid != current[1] or \
+ item.mode != current[3] or item.selabel != current[4] or \
+ item.capabilities != current[5]:
+ script.SetPermissions("/"+item.name, item.uid, item.gid,
+ item.mode, item.selabel, item.capabilities)
+
+ recurse(self, (-1, -1, -1, -1, None, None))
+
+
+def CopyPartitionFiles(itemset, input_zip, output_zip=None, substitute=None):
+ """Copies files for the partition in the input zip to the output
+ zip. Populates the Item class with their metadata, and returns a
+ list of symlinks. output_zip may be None, in which case the copy is
+ skipped (but the other side effects still happen). substitute is an
+ optional dict of {output filename: contents} to be output instead of
+ certain input files.
+ """
+
+ symlinks = []
+
+ partition = itemset.partition
+
+ for info in input_zip.infolist():
+ prefix = partition.upper() + "/"
+ if info.filename.startswith(prefix):
+ basefilename = info.filename[len(prefix):]
+ if IsSymlink(info):
+ symlinks.append((input_zip.read(info.filename),
+ "/" + partition + "/" + basefilename))
+ else:
+ info2 = copy.copy(info)
+ fn = info2.filename = partition + "/" + basefilename
+ if substitute and fn in substitute and substitute[fn] is None:
+ continue
+ if output_zip is not None:
+ if substitute and fn in substitute:
+ data = substitute[fn]
+ else:
+ data = input_zip.read(info.filename)
+ output_zip.writestr(info2, data)
+ if fn.endswith("/"):
+ itemset.Get(fn[:-1], is_dir=True)
+ else:
+ itemset.Get(fn)
+
+ symlinks.sort()
+ return symlinks
+
+
+def SignOutput(temp_zip_name, output_zip_name):
+ key_passwords = common.GetKeyPasswords([OPTIONS.package_key])
+ pw = key_passwords[OPTIONS.package_key]
+
+ common.SignFile(temp_zip_name, output_zip_name, OPTIONS.package_key, pw,
+ whole_file=True)
+
+
+def AppendAssertions(script, info_dict, oem_dict=None):
+ oem_props = info_dict.get("oem_fingerprint_properties")
+ if oem_props is None or len(oem_props) == 0:
+ device = GetBuildProp("ro.product.device", info_dict)
+ script.AssertDevice(device)
+ else:
+ if oem_dict is None:
+ raise common.ExternalError(
+ "No OEM file provided to answer expected assertions")
+ for prop in oem_props.split():
+ if oem_dict.get(prop) is None:
+ raise common.ExternalError(
+ "The OEM file is missing the property %s" % prop)
+ script.AssertOemProperty(prop, oem_dict.get(prop))
+
+
+def HasRecoveryPatch(target_files_zip):
+ try:
+ target_files_zip.getinfo("SYSTEM/recovery-from-boot.p")
+ return True
+ except KeyError:
+ return False
+
+def HasVendorPartition(target_files_zip):
+ try:
+ target_files_zip.getinfo("VENDOR/")
+ return True
+ except KeyError:
+ return False
+
+def GetOemProperty(name, oem_props, oem_dict, info_dict):
+ if oem_props is not None and name in oem_props:
+ return oem_dict[name]
+ return GetBuildProp(name, info_dict)
+
+
+def CalculateFingerprint(oem_props, oem_dict, info_dict):
+ if oem_props is None:
+ return GetBuildProp("ro.build.fingerprint", info_dict)
+ return "%s/%s/%s:%s" % (
+ GetOemProperty("ro.product.brand", oem_props, oem_dict, info_dict),
+ GetOemProperty("ro.product.name", oem_props, oem_dict, info_dict),
+ GetOemProperty("ro.product.device", oem_props, oem_dict, info_dict),
+ GetBuildProp("ro.build.thumbprint", info_dict))
+
+
+def GetImage(which, tmpdir, info_dict):
+ # Return an image object (suitable for passing to BlockImageDiff)
+ # for the 'which' partition (most be "system" or "vendor"). If a
+ # prebuilt image and file map are found in tmpdir they are used,
+ # otherwise they are reconstructed from the individual files.
+
+ assert which in ("system", "vendor")
+
+ path = os.path.join(tmpdir, "IMAGES", which + ".img")
+ mappath = os.path.join(tmpdir, "IMAGES", which + ".map")
+ if os.path.exists(path) and os.path.exists(mappath):
+ print "using %s.img from target-files" % (which,)
+ # This is a 'new' target-files, which already has the image in it.
+
+ else:
+ print "building %s.img from target-files" % (which,)
+
+ # This is an 'old' target-files, which does not contain images
+ # already built. Build them.
+
+ mappath = tempfile.mkstemp()[1]
+ OPTIONS.tempfiles.append(mappath)
+
+ import add_img_to_target_files
+ if which == "system":
+ path = add_img_to_target_files.BuildSystem(
+ tmpdir, info_dict, block_list=mappath)
+ elif which == "vendor":
+ path = add_img_to_target_files.BuildVendor(
+ tmpdir, info_dict, block_list=mappath)
+
+ return sparse_img.SparseImage(path, mappath)
+
+
+def WriteFullOTAPackage(input_zip, output_zip):
+ # TODO: how to determine this? We don't know what version it will
+ # be installed on top of. For now, we expect the API just won't
+ # change very often.
+ script = edify_generator.EdifyGenerator(3, OPTIONS.info_dict)
+
+ oem_props = OPTIONS.info_dict.get("oem_fingerprint_properties")
+ recovery_mount_options = OPTIONS.info_dict.get("recovery_mount_options")
+ oem_dict = None
+ if oem_props is not None and len(oem_props) > 0:
+ if OPTIONS.oem_source is None:
+ raise common.ExternalError("OEM source required for this build")
+ script.Mount("/oem", recovery_mount_options)
+ oem_dict = common.LoadDictionaryFromLines(
+ open(OPTIONS.oem_source).readlines())
+
+ metadata = {
+ "post-build": CalculateFingerprint(oem_props, oem_dict,
+ OPTIONS.info_dict),
+ "pre-device": GetOemProperty("ro.product.device", oem_props, oem_dict,
+ OPTIONS.info_dict),
+ "post-timestamp": GetBuildProp("ro.build.date.utc", OPTIONS.info_dict),
+ }
+
+ device_specific = common.DeviceSpecificParams(
+ input_zip=input_zip,
+ input_version=OPTIONS.info_dict["recovery_api_version"],
+ output_zip=output_zip,
+ script=script,
+ input_tmp=OPTIONS.input_tmp,
+ metadata=metadata,
+ info_dict=OPTIONS.info_dict)
+
+ has_recovery_patch = HasRecoveryPatch(input_zip)
+ block_based = OPTIONS.block_based and has_recovery_patch
+
+ if not OPTIONS.omit_prereq:
+ ts = GetBuildProp("ro.build.date.utc", OPTIONS.info_dict)
+ ts_text = GetBuildProp("ro.build.date", OPTIONS.info_dict)
+ script.AssertOlderBuild(ts, ts_text)
+
+ AppendAssertions(script, OPTIONS.info_dict, oem_dict)
+ device_specific.FullOTA_Assertions()
+
+ # Two-step package strategy (in chronological order, which is *not*
+ # the order in which the generated script has things):
+ #
+ # if stage is not "2/3" or "3/3":
+ # write recovery image to boot partition
+ # set stage to "2/3"
+ # reboot to boot partition and restart recovery
+ # else if stage is "2/3":
+ # write recovery image to recovery partition
+ # set stage to "3/3"
+ # reboot to recovery partition and restart recovery
+ # else:
+ # (stage must be "3/3")
+ # set stage to ""
+ # do normal full package installation:
+ # wipe and install system, boot image, etc.
+ # set up system to update recovery partition on first boot
+ # complete script normally
+ # (allow recovery to mark itself finished and reboot)
+
+ recovery_img = common.GetBootableImage("recovery.img", "recovery.img",
+ OPTIONS.input_tmp, "RECOVERY")
+ if OPTIONS.two_step:
+ if not OPTIONS.info_dict.get("multistage_support", None):
+ assert False, "two-step packages not supported by this build"
+ fs = OPTIONS.info_dict["fstab"]["/misc"]
+ assert fs.fs_type.upper() == "EMMC", \
+ "two-step packages only supported on devices with EMMC /misc partitions"
+ bcb_dev = {"bcb_dev": fs.device}
+ common.ZipWriteStr(output_zip, "recovery.img", recovery_img.data)
+ script.AppendExtra("""
+if get_stage("%(bcb_dev)s") == "2/3" then
+""" % bcb_dev)
+ script.WriteRawImage("/recovery", "recovery.img")
+ script.AppendExtra("""
+set_stage("%(bcb_dev)s", "3/3");
+reboot_now("%(bcb_dev)s", "recovery");
+else if get_stage("%(bcb_dev)s") == "3/3" then
+""" % bcb_dev)
+
+ device_specific.FullOTA_InstallBegin()
+
+ system_progress = 0.75
+
+ if OPTIONS.wipe_user_data:
+ system_progress -= 0.1
+ if HasVendorPartition(input_zip):
+ system_progress -= 0.1
+
+ if "selinux_fc" in OPTIONS.info_dict:
+ WritePolicyConfig(OPTIONS.info_dict["selinux_fc"], output_zip)
+
+ recovery_mount_options = OPTIONS.info_dict.get("recovery_mount_options")
+
+ system_items = ItemSet("system", "META/filesystem_config.txt")
+ script.ShowProgress(system_progress, 0)
+
+ if block_based:
+ # Full OTA is done as an "incremental" against an empty source
+ # image. This has the effect of writing new data from the package
+ # to the entire partition, but lets us reuse the updater code that
+ # writes incrementals to do it.
+ system_tgt = GetImage("system", OPTIONS.input_tmp, OPTIONS.info_dict)
+ system_tgt.ResetFileMap()
+ system_diff = common.BlockDifference("system", system_tgt, src=None)
+ system_diff.WriteScript(script, output_zip)
+ else:
+ script.FormatPartition("/system")
+ script.Mount("/system", recovery_mount_options)
+ if not has_recovery_patch:
+ script.UnpackPackageDir("recovery", "/system")
+ script.UnpackPackageDir("system", "/system")
+
+ symlinks = CopyPartitionFiles(system_items, input_zip, output_zip)
+ script.MakeSymlinks(symlinks)
+
+ boot_img = common.GetBootableImage("boot.img", "boot.img",
+ OPTIONS.input_tmp, "BOOT")
+
+ if not block_based:
+ def output_sink(fn, data):
+ common.ZipWriteStr(output_zip, "recovery/" + fn, data)
+ system_items.Get("system/" + fn)
+
+ common.MakeRecoveryPatch(OPTIONS.input_tmp, output_sink,
+ recovery_img, boot_img)
+
+ system_items.GetMetadata(input_zip)
+ system_items.Get("system").SetPermissions(script)
+
+ if HasVendorPartition(input_zip):
+ vendor_items = ItemSet("vendor", "META/vendor_filesystem_config.txt")
+ script.ShowProgress(0.1, 0)
+
+ if block_based:
+ vendor_tgt = GetImage("vendor", OPTIONS.input_tmp, OPTIONS.info_dict)
+ vendor_tgt.ResetFileMap()
+ vendor_diff = common.BlockDifference("vendor", vendor_tgt)
+ vendor_diff.WriteScript(script, output_zip)
+ else:
+ script.FormatPartition("/vendor")
+ script.Mount("/vendor", recovery_mount_options)
+ script.UnpackPackageDir("vendor", "/vendor")
+
+ symlinks = CopyPartitionFiles(vendor_items, input_zip, output_zip)
+ script.MakeSymlinks(symlinks)
+
+ vendor_items.GetMetadata(input_zip)
+ vendor_items.Get("vendor").SetPermissions(script)
+
+ common.CheckSize(boot_img.data, "boot.img", OPTIONS.info_dict)
+ common.ZipWriteStr(output_zip, "boot.img", boot_img.data)
+
+ script.ShowProgress(0.05, 5)
+ script.WriteRawImage("/boot", "boot.img")
+
+ script.ShowProgress(0.2, 10)
+ device_specific.FullOTA_InstallEnd()
+
+ if OPTIONS.extra_script is not None:
+ script.AppendExtra(OPTIONS.extra_script)
+
+ script.UnmountAll()
+
+ if OPTIONS.wipe_user_data:
+ script.ShowProgress(0.1, 10)
+ script.FormatPartition("/data")
+
+ if OPTIONS.two_step:
+ script.AppendExtra("""
+set_stage("%(bcb_dev)s", "");
+""" % bcb_dev)
+ script.AppendExtra("else\n")
+ script.WriteRawImage("/boot", "recovery.img")
+ script.AppendExtra("""
+set_stage("%(bcb_dev)s", "2/3");
+reboot_now("%(bcb_dev)s", "");
+endif;
+endif;
+""" % bcb_dev)
+ script.AddToZip(input_zip, output_zip, input_path=OPTIONS.updater_binary)
+ WriteMetadata(metadata, output_zip)
+
+
+def WritePolicyConfig(file_name, output_zip):
+ common.ZipWrite(output_zip, file_name, os.path.basename(file_name))
+
+
+def WriteMetadata(metadata, output_zip):
+ common.ZipWriteStr(output_zip, "META-INF/com/android/metadata",
+ "".join(["%s=%s\n" % kv
+ for kv in sorted(metadata.iteritems())]))
+
+
+def LoadPartitionFiles(z, partition):
+ """Load all the files from the given partition in a given target-files
+ ZipFile, and return a dict of {filename: File object}."""
+ out = {}
+ prefix = partition.upper() + "/"
+ for info in z.infolist():
+ if info.filename.startswith(prefix) and not IsSymlink(info):
+ basefilename = info.filename[len(prefix):]
+ fn = partition + "/" + basefilename
+ data = z.read(info.filename)
+ out[fn] = common.File(fn, data)
+ return out
+
+
+def GetBuildProp(prop, info_dict):
+ """Return the fingerprint of the build of a given target-files info_dict."""
+ try:
+ return info_dict.get("build.prop", {})[prop]
+ except KeyError:
+ raise common.ExternalError("couldn't find %s in build.prop" % (prop,))
+
+
+def AddToKnownPaths(filename, known_paths):
+ if filename[-1] == "/":
+ return
+ dirs = filename.split("/")[:-1]
+ while len(dirs) > 0:
+ path = "/".join(dirs)
+ if path in known_paths:
+ break
+ known_paths.add(path)
+ dirs.pop()
+
+
+def WriteBlockIncrementalOTAPackage(target_zip, source_zip, output_zip):
+ source_version = OPTIONS.source_info_dict["recovery_api_version"]
+ target_version = OPTIONS.target_info_dict["recovery_api_version"]
+
+ if source_version == 0:
+ print ("WARNING: generating edify script for a source that "
+ "can't install it.")
+ script = edify_generator.EdifyGenerator(source_version,
+ OPTIONS.target_info_dict)
+
+ metadata = {
+ "pre-device": GetBuildProp("ro.product.device",
+ OPTIONS.source_info_dict),
+ "post-timestamp": GetBuildProp("ro.build.date.utc",
+ OPTIONS.target_info_dict),
+ }
+
+ device_specific = common.DeviceSpecificParams(
+ source_zip=source_zip,
+ source_version=source_version,
+ target_zip=target_zip,
+ target_version=target_version,
+ output_zip=output_zip,
+ script=script,
+ metadata=metadata,
+ info_dict=OPTIONS.info_dict)
+
+ source_fp = GetBuildProp("ro.build.fingerprint", OPTIONS.source_info_dict)
+ target_fp = GetBuildProp("ro.build.fingerprint", OPTIONS.target_info_dict)
+ metadata["pre-build"] = source_fp
+ metadata["post-build"] = target_fp
+
+ source_boot = common.GetBootableImage(
+ "/tmp/boot.img", "boot.img", OPTIONS.source_tmp, "BOOT",
+ OPTIONS.source_info_dict)
+ target_boot = common.GetBootableImage(
+ "/tmp/boot.img", "boot.img", OPTIONS.target_tmp, "BOOT")
+ updating_boot = (not OPTIONS.two_step and
+ (source_boot.data != target_boot.data))
+
+ target_recovery = common.GetBootableImage(
+ "/tmp/recovery.img", "recovery.img", OPTIONS.target_tmp, "RECOVERY")
+
+ system_src = GetImage("system", OPTIONS.source_tmp, OPTIONS.source_info_dict)
+ system_tgt = GetImage("system", OPTIONS.target_tmp, OPTIONS.target_info_dict)
+
+ blockimgdiff_version = 1
+ if OPTIONS.info_dict:
+ blockimgdiff_version = max(
+ int(i) for i in
+ OPTIONS.info_dict.get("blockimgdiff_versions", "1").split(","))
+
+ system_diff = common.BlockDifference("system", system_tgt, system_src,
+ check_first_block=True,
+ version=blockimgdiff_version)
+
+ if HasVendorPartition(target_zip):
+ if not HasVendorPartition(source_zip):
+ raise RuntimeError("can't generate incremental that adds /vendor")
+ vendor_src = GetImage("vendor", OPTIONS.source_tmp,
+ OPTIONS.source_info_dict)
+ vendor_tgt = GetImage("vendor", OPTIONS.target_tmp,
+ OPTIONS.target_info_dict)
+ vendor_diff = common.BlockDifference("vendor", vendor_tgt, vendor_src,
+ check_first_block=True,
+ version=blockimgdiff_version)
+ else:
+ vendor_diff = None
+
+ oem_props = OPTIONS.target_info_dict.get("oem_fingerprint_properties")
+ recovery_mount_options = OPTIONS.target_info_dict.get(
+ "recovery_mount_options")
+ oem_dict = None
+ if oem_props is not None and len(oem_props) > 0:
+ if OPTIONS.oem_source is None:
+ raise common.ExternalError("OEM source required for this build")
+ script.Mount("/oem", recovery_mount_options)
+ oem_dict = common.LoadDictionaryFromLines(
+ open(OPTIONS.oem_source).readlines())
+
+ AppendAssertions(script, OPTIONS.target_info_dict, oem_dict)
+ device_specific.IncrementalOTA_Assertions()
+
+ # Two-step incremental package strategy (in chronological order,
+ # which is *not* the order in which the generated script has
+ # things):
+ #
+ # if stage is not "2/3" or "3/3":
+ # do verification on current system
+ # write recovery image to boot partition
+ # set stage to "2/3"
+ # reboot to boot partition and restart recovery
+ # else if stage is "2/3":
+ # write recovery image to recovery partition
+ # set stage to "3/3"
+ # reboot to recovery partition and restart recovery
+ # else:
+ # (stage must be "3/3")
+ # perform update:
+ # patch system files, etc.
+ # force full install of new boot image
+ # set up system to update recovery partition on first boot
+ # complete script normally
+ # (allow recovery to mark itself finished and reboot)
+
+ if OPTIONS.two_step:
+ if not OPTIONS.info_dict.get("multistage_support", None):
+ assert False, "two-step packages not supported by this build"
+ fs = OPTIONS.info_dict["fstab"]["/misc"]
+ assert fs.fs_type.upper() == "EMMC", \
+ "two-step packages only supported on devices with EMMC /misc partitions"
+ bcb_dev = {"bcb_dev": fs.device}
+ common.ZipWriteStr(output_zip, "recovery.img", target_recovery.data)
+ script.AppendExtra("""
+if get_stage("%(bcb_dev)s") == "2/3" then
+""" % bcb_dev)
+ script.AppendExtra("sleep(20);\n")
+ script.WriteRawImage("/recovery", "recovery.img")
+ script.AppendExtra("""
+set_stage("%(bcb_dev)s", "3/3");
+reboot_now("%(bcb_dev)s", "recovery");
+else if get_stage("%(bcb_dev)s") != "3/3" then
+""" % bcb_dev)
+
+ script.Print("Verifying current system...")
+
+ device_specific.IncrementalOTA_VerifyBegin()
+
+ if oem_props is None:
+ # When blockimgdiff version is less than 3 (non-resumable block-based OTA),
+ # patching on a device that's already on the target build will damage the
+ # system. Because operations like move don't check the block state, they
+ # always apply the changes unconditionally.
+ if blockimgdiff_version <= 2:
+ script.AssertSomeFingerprint(source_fp)
+ else:
+ script.AssertSomeFingerprint(source_fp, target_fp)
+ else:
+ if blockimgdiff_version <= 2:
+ script.AssertSomeThumbprint(
+ GetBuildProp("ro.build.thumbprint", OPTIONS.source_info_dict))
+ else:
+ script.AssertSomeThumbprint(
+ GetBuildProp("ro.build.thumbprint", OPTIONS.target_info_dict),
+ GetBuildProp("ro.build.thumbprint", OPTIONS.source_info_dict))
+
+ if updating_boot:
+ boot_type, boot_device = common.GetTypeAndDevice("/boot", OPTIONS.info_dict)
+ d = common.Difference(target_boot, source_boot)
+ _, _, d = d.ComputePatch()
+ if d is None:
+ include_full_boot = True
+ common.ZipWriteStr(output_zip, "boot.img", target_boot.data)
+ else:
+ include_full_boot = False
+
+ print "boot target: %d source: %d diff: %d" % (
+ target_boot.size, source_boot.size, len(d))
+
+ common.ZipWriteStr(output_zip, "patch/boot.img.p", d)
+
+ script.PatchCheck("%s:%s:%d:%s:%d:%s" %
+ (boot_type, boot_device,
+ source_boot.size, source_boot.sha1,
+ target_boot.size, target_boot.sha1))
+
+ device_specific.IncrementalOTA_VerifyEnd()
+
+ if OPTIONS.two_step:
+ script.WriteRawImage("/boot", "recovery.img")
+ script.AppendExtra("""
+set_stage("%(bcb_dev)s", "2/3");
+reboot_now("%(bcb_dev)s", "");
+else
+""" % bcb_dev)
+
+ # Verify the existing partitions.
+ system_diff.WriteVerifyScript(script)
+ if vendor_diff:
+ vendor_diff.WriteVerifyScript(script)
+
+ script.Comment("---- start making changes here ----")
+
+ device_specific.IncrementalOTA_InstallBegin()
+
+ system_diff.WriteScript(script, output_zip,
+ progress=0.8 if vendor_diff else 0.9)
+ if vendor_diff:
+ vendor_diff.WriteScript(script, output_zip, progress=0.1)
+
+ if OPTIONS.two_step:
+ common.ZipWriteStr(output_zip, "boot.img", target_boot.data)
+ script.WriteRawImage("/boot", "boot.img")
+ print "writing full boot image (forced by two-step mode)"
+
+ if not OPTIONS.two_step:
+ if updating_boot:
+ if include_full_boot:
+ print "boot image changed; including full."
+ script.Print("Installing boot image...")
+ script.WriteRawImage("/boot", "boot.img")
+ else:
+ # Produce the boot image by applying a patch to the current
+ # contents of the boot partition, and write it back to the
+ # partition.
+ print "boot image changed; including patch."
+ script.Print("Patching boot image...")
+ script.ShowProgress(0.1, 10)
+ script.ApplyPatch("%s:%s:%d:%s:%d:%s"
+ % (boot_type, boot_device,
+ source_boot.size, source_boot.sha1,
+ target_boot.size, target_boot.sha1),
+ "-",
+ target_boot.size, target_boot.sha1,
+ source_boot.sha1, "patch/boot.img.p")
+ else:
+ print "boot image unchanged; skipping."
+
+ # Do device-specific installation (eg, write radio image).
+ device_specific.IncrementalOTA_InstallEnd()
+
+ if OPTIONS.extra_script is not None:
+ script.AppendExtra(OPTIONS.extra_script)
+
+ if OPTIONS.wipe_user_data:
+ script.Print("Erasing user data...")
+ script.FormatPartition("/data")
+
+ if OPTIONS.two_step:
+ script.AppendExtra("""
+set_stage("%(bcb_dev)s", "");
+endif;
+endif;
+""" % bcb_dev)
+
+ script.SetProgress(1)
+ script.AddToZip(target_zip, output_zip, input_path=OPTIONS.updater_binary)
+ WriteMetadata(metadata, output_zip)
+
+
+class FileDifference(object):
+ def __init__(self, partition, source_zip, target_zip, output_zip):
+ self.deferred_patch_list = None
+ print "Loading target..."
+ self.target_data = target_data = LoadPartitionFiles(target_zip, partition)
+ print "Loading source..."
+ self.source_data = source_data = LoadPartitionFiles(source_zip, partition)
+
+ self.verbatim_targets = verbatim_targets = []
+ self.patch_list = patch_list = []
+ diffs = []
+ self.renames = renames = {}
+ known_paths = set()
+ largest_source_size = 0
+
+ matching_file_cache = {}
+ for fn, sf in source_data.items():
+ assert fn == sf.name
+ matching_file_cache["path:" + fn] = sf
+ if fn in target_data.keys():
+ AddToKnownPaths(fn, known_paths)
+ # Only allow eligibility for filename/sha matching
+ # if there isn't a perfect path match.
+ if target_data.get(sf.name) is None:
+ matching_file_cache["file:" + fn.split("/")[-1]] = sf
+ matching_file_cache["sha:" + sf.sha1] = sf
+
+ for fn in sorted(target_data.keys()):
+ tf = target_data[fn]
+ assert fn == tf.name
+ sf = ClosestFileMatch(tf, matching_file_cache, renames)
+ if sf is not None and sf.name != tf.name:
+ print "File has moved from " + sf.name + " to " + tf.name
+ renames[sf.name] = tf
+
+ if sf is None or fn in OPTIONS.require_verbatim:
+ # This file should be included verbatim
+ if fn in OPTIONS.prohibit_verbatim:
+ raise common.ExternalError("\"%s\" must be sent verbatim" % (fn,))
+ print "send", fn, "verbatim"
+ tf.AddToZip(output_zip)
+ verbatim_targets.append((fn, tf.size, tf.sha1))
+ if fn in target_data.keys():
+ AddToKnownPaths(fn, known_paths)
+ elif tf.sha1 != sf.sha1:
+ # File is different; consider sending as a patch
+ diffs.append(common.Difference(tf, sf))
+ else:
+ # Target file data identical to source (may still be renamed)
+ pass
+
+ common.ComputeDifferences(diffs)
+
+ for diff in diffs:
+ tf, sf, d = diff.GetPatch()
+ path = "/".join(tf.name.split("/")[:-1])
+ if d is None or len(d) > tf.size * OPTIONS.patch_threshold or \
+ path not in known_paths:
+ # patch is almost as big as the file; don't bother patching
+ # or a patch + rename cannot take place due to the target
+ # directory not existing
+ tf.AddToZip(output_zip)
+ verbatim_targets.append((tf.name, tf.size, tf.sha1))
+ if sf.name in renames:
+ del renames[sf.name]
+ AddToKnownPaths(tf.name, known_paths)
+ else:
+ common.ZipWriteStr(output_zip, "patch/" + sf.name + ".p", d)
+ patch_list.append((tf, sf, tf.size, common.sha1(d).hexdigest()))
+ largest_source_size = max(largest_source_size, sf.size)
+
+ self.largest_source_size = largest_source_size
+
+ def EmitVerification(self, script):
+ so_far = 0
+ for tf, sf, _, _ in self.patch_list:
+ if tf.name != sf.name:
+ script.SkipNextActionIfTargetExists(tf.name, tf.sha1)
+ script.PatchCheck("/"+sf.name, tf.sha1, sf.sha1)
+ so_far += sf.size
+ return so_far
+
+ def EmitExplicitTargetVerification(self, script):
+ for fn, _, sha1 in self.verbatim_targets:
+ if fn[-1] != "/":
+ script.FileCheck("/"+fn, sha1)
+ for tf, _, _, _ in self.patch_list:
+ script.FileCheck(tf.name, tf.sha1)
+
+ def RemoveUnneededFiles(self, script, extras=()):
+ script.DeleteFiles(
+ ["/" + i[0] for i in self.verbatim_targets] +
+ ["/" + i for i in sorted(self.source_data)
+ if i not in self.target_data and i not in self.renames] +
+ list(extras))
+
+ def TotalPatchSize(self):
+ return sum(i[1].size for i in self.patch_list)
+
+ def EmitPatches(self, script, total_patch_size, so_far):
+ self.deferred_patch_list = deferred_patch_list = []
+ for item in self.patch_list:
+ tf, sf, _, _ = item
+ if tf.name == "system/build.prop":
+ deferred_patch_list.append(item)
+ continue
+ if sf.name != tf.name:
+ script.SkipNextActionIfTargetExists(tf.name, tf.sha1)
+ script.ApplyPatch("/" + sf.name, "-", tf.size, tf.sha1, sf.sha1,
+ "patch/" + sf.name + ".p")
+ so_far += tf.size
+ script.SetProgress(so_far / total_patch_size)
+ return so_far
+
+ def EmitDeferredPatches(self, script):
+ for item in self.deferred_patch_list:
+ tf, sf, _, _ = item
+ script.ApplyPatch("/"+sf.name, "-", tf.size, tf.sha1, sf.sha1,
+ "patch/" + sf.name + ".p")
+ script.SetPermissions("/system/build.prop", 0, 0, 0o644, None, None)
+
+ def EmitRenames(self, script):
+ if len(self.renames) > 0:
+ script.Print("Renaming files...")
+ for src, tgt in self.renames.iteritems():
+ print "Renaming " + src + " to " + tgt.name
+ script.RenameFile(src, tgt.name)
+
+
+def WriteIncrementalOTAPackage(target_zip, source_zip, output_zip):
+ target_has_recovery_patch = HasRecoveryPatch(target_zip)
+ source_has_recovery_patch = HasRecoveryPatch(source_zip)
+
+ if (OPTIONS.block_based and
+ target_has_recovery_patch and
+ source_has_recovery_patch):
+ return WriteBlockIncrementalOTAPackage(target_zip, source_zip, output_zip)
+
+ source_version = OPTIONS.source_info_dict["recovery_api_version"]
+ target_version = OPTIONS.target_info_dict["recovery_api_version"]
+
+ if source_version == 0:
+ print ("WARNING: generating edify script for a source that "
+ "can't install it.")
+ script = edify_generator.EdifyGenerator(source_version,
+ OPTIONS.target_info_dict)
+
+ oem_props = OPTIONS.info_dict.get("oem_fingerprint_properties")
+ recovery_mount_options = OPTIONS.info_dict.get("recovery_mount_options")
+ oem_dict = None
+ if oem_props is not None and len(oem_props) > 0:
+ if OPTIONS.oem_source is None:
+ raise common.ExternalError("OEM source required for this build")
+ script.Mount("/oem", recovery_mount_options)
+ oem_dict = common.LoadDictionaryFromLines(
+ open(OPTIONS.oem_source).readlines())
+
+ metadata = {
+ "pre-device": GetOemProperty("ro.product.device", oem_props, oem_dict,
+ OPTIONS.source_info_dict),
+ "post-timestamp": GetBuildProp("ro.build.date.utc",
+ OPTIONS.target_info_dict),
+ }
+
+ device_specific = common.DeviceSpecificParams(
+ source_zip=source_zip,
+ source_version=source_version,
+ target_zip=target_zip,
+ target_version=target_version,
+ output_zip=output_zip,
+ script=script,
+ metadata=metadata,
+ info_dict=OPTIONS.info_dict)
+
+ system_diff = FileDifference("system", source_zip, target_zip, output_zip)
+ script.Mount("/system", recovery_mount_options)
+ if HasVendorPartition(target_zip):
+ vendor_diff = FileDifference("vendor", source_zip, target_zip, output_zip)
+ script.Mount("/vendor", recovery_mount_options)
+ else:
+ vendor_diff = None
+
+ target_fp = CalculateFingerprint(oem_props, oem_dict,
+ OPTIONS.target_info_dict)
+ source_fp = CalculateFingerprint(oem_props, oem_dict,
+ OPTIONS.source_info_dict)
+
+ if oem_props is None:
+ script.AssertSomeFingerprint(source_fp, target_fp)
+ else:
+ script.AssertSomeThumbprint(
+ GetBuildProp("ro.build.thumbprint", OPTIONS.target_info_dict),
+ GetBuildProp("ro.build.thumbprint", OPTIONS.source_info_dict))
+
+ metadata["pre-build"] = source_fp
+ metadata["post-build"] = target_fp
+
+ source_boot = common.GetBootableImage(
+ "/tmp/boot.img", "boot.img", OPTIONS.source_tmp, "BOOT",
+ OPTIONS.source_info_dict)
+ target_boot = common.GetBootableImage(
+ "/tmp/boot.img", "boot.img", OPTIONS.target_tmp, "BOOT")
+ updating_boot = (not OPTIONS.two_step and
+ (source_boot.data != target_boot.data))
+
+ source_recovery = common.GetBootableImage(
+ "/tmp/recovery.img", "recovery.img", OPTIONS.source_tmp, "RECOVERY",
+ OPTIONS.source_info_dict)
+ target_recovery = common.GetBootableImage(
+ "/tmp/recovery.img", "recovery.img", OPTIONS.target_tmp, "RECOVERY")
+ updating_recovery = (source_recovery.data != target_recovery.data)
+
+ # Here's how we divide up the progress bar:
+ # 0.1 for verifying the start state (PatchCheck calls)
+ # 0.8 for applying patches (ApplyPatch calls)
+ # 0.1 for unpacking verbatim files, symlinking, and doing the
+ # device-specific commands.
+
+ AppendAssertions(script, OPTIONS.target_info_dict, oem_dict)
+ device_specific.IncrementalOTA_Assertions()
+
+ # Two-step incremental package strategy (in chronological order,
+ # which is *not* the order in which the generated script has
+ # things):
+ #
+ # if stage is not "2/3" or "3/3":
+ # do verification on current system
+ # write recovery image to boot partition
+ # set stage to "2/3"
+ # reboot to boot partition and restart recovery
+ # else if stage is "2/3":
+ # write recovery image to recovery partition
+ # set stage to "3/3"
+ # reboot to recovery partition and restart recovery
+ # else:
+ # (stage must be "3/3")
+ # perform update:
+ # patch system files, etc.
+ # force full install of new boot image
+ # set up system to update recovery partition on first boot
+ # complete script normally
+ # (allow recovery to mark itself finished and reboot)
+
+ if OPTIONS.two_step:
+ if not OPTIONS.info_dict.get("multistage_support", None):
+ assert False, "two-step packages not supported by this build"
+ fs = OPTIONS.info_dict["fstab"]["/misc"]
+ assert fs.fs_type.upper() == "EMMC", \
+ "two-step packages only supported on devices with EMMC /misc partitions"
+ bcb_dev = {"bcb_dev": fs.device}
+ common.ZipWriteStr(output_zip, "recovery.img", target_recovery.data)
+ script.AppendExtra("""
+if get_stage("%(bcb_dev)s") == "2/3" then
+""" % bcb_dev)
+ script.AppendExtra("sleep(20);\n")
+ script.WriteRawImage("/recovery", "recovery.img")
+ script.AppendExtra("""
+set_stage("%(bcb_dev)s", "3/3");
+reboot_now("%(bcb_dev)s", "recovery");
+else if get_stage("%(bcb_dev)s") != "3/3" then
+""" % bcb_dev)
+
+ script.Print("Verifying current system...")
+
+ device_specific.IncrementalOTA_VerifyBegin()
+
+ script.ShowProgress(0.1, 0)
+ so_far = system_diff.EmitVerification(script)
+ if vendor_diff:
+ so_far += vendor_diff.EmitVerification(script)
+
+ if updating_boot:
+ d = common.Difference(target_boot, source_boot)
+ _, _, d = d.ComputePatch()
+ print "boot target: %d source: %d diff: %d" % (
+ target_boot.size, source_boot.size, len(d))
+
+ common.ZipWriteStr(output_zip, "patch/boot.img.p", d)
+
+ boot_type, boot_device = common.GetTypeAndDevice("/boot", OPTIONS.info_dict)
+
+ script.PatchCheck("%s:%s:%d:%s:%d:%s" %
+ (boot_type, boot_device,
+ source_boot.size, source_boot.sha1,
+ target_boot.size, target_boot.sha1))
+ so_far += source_boot.size
+
+ size = []
+ if system_diff.patch_list:
+ size.append(system_diff.largest_source_size)
+ if vendor_diff:
+ if vendor_diff.patch_list:
+ size.append(vendor_diff.largest_source_size)
+ if size or updating_recovery or updating_boot:
+ script.CacheFreeSpaceCheck(max(size))
+
+ device_specific.IncrementalOTA_VerifyEnd()
+
+ if OPTIONS.two_step:
+ script.WriteRawImage("/boot", "recovery.img")
+ script.AppendExtra("""
+set_stage("%(bcb_dev)s", "2/3");
+reboot_now("%(bcb_dev)s", "");
+else
+""" % bcb_dev)
+
+ script.Comment("---- start making changes here ----")
+
+ device_specific.IncrementalOTA_InstallBegin()
+
+ if OPTIONS.two_step:
+ common.ZipWriteStr(output_zip, "boot.img", target_boot.data)
+ script.WriteRawImage("/boot", "boot.img")
+ print "writing full boot image (forced by two-step mode)"
+
+ script.Print("Removing unneeded files...")
+ system_diff.RemoveUnneededFiles(script, ("/system/recovery.img",))
+ if vendor_diff:
+ vendor_diff.RemoveUnneededFiles(script)
+
+ script.ShowProgress(0.8, 0)
+ total_patch_size = 1.0 + system_diff.TotalPatchSize()
+ if vendor_diff:
+ total_patch_size += vendor_diff.TotalPatchSize()
+ if updating_boot:
+ total_patch_size += target_boot.size
+
+ script.Print("Patching system files...")
+ so_far = system_diff.EmitPatches(script, total_patch_size, 0)
+ if vendor_diff:
+ script.Print("Patching vendor files...")
+ so_far = vendor_diff.EmitPatches(script, total_patch_size, so_far)
+
+ if not OPTIONS.two_step:
+ if updating_boot:
+ # Produce the boot image by applying a patch to the current
+ # contents of the boot partition, and write it back to the
+ # partition.
+ script.Print("Patching boot image...")
+ script.ApplyPatch("%s:%s:%d:%s:%d:%s"
+ % (boot_type, boot_device,
+ source_boot.size, source_boot.sha1,
+ target_boot.size, target_boot.sha1),
+ "-",
+ target_boot.size, target_boot.sha1,
+ source_boot.sha1, "patch/boot.img.p")
+ so_far += target_boot.size
+ script.SetProgress(so_far / total_patch_size)
+ print "boot image changed; including."
+ else:
+ print "boot image unchanged; skipping."
+
+ system_items = ItemSet("system", "META/filesystem_config.txt")
+ if vendor_diff:
+ vendor_items = ItemSet("vendor", "META/vendor_filesystem_config.txt")
+
+ if updating_recovery:
+ # Recovery is generated as a patch using both the boot image
+ # (which contains the same linux kernel as recovery) and the file
+ # /system/etc/recovery-resource.dat (which contains all the images
+ # used in the recovery UI) as sources. This lets us minimize the
+ # size of the patch, which must be included in every OTA package.
+ #
+ # For older builds where recovery-resource.dat is not present, we
+ # use only the boot image as the source.
+
+ if not target_has_recovery_patch:
+ def output_sink(fn, data):
+ common.ZipWriteStr(output_zip, "recovery/" + fn, data)
+ system_items.Get("system/" + fn)
+
+ common.MakeRecoveryPatch(OPTIONS.target_tmp, output_sink,
+ target_recovery, target_boot)
+ script.DeleteFiles(["/system/recovery-from-boot.p",
+ "/system/etc/install-recovery.sh"])
+ print "recovery image changed; including as patch from boot."
+ else:
+ print "recovery image unchanged; skipping."
+
+ script.ShowProgress(0.1, 10)
+
+ target_symlinks = CopyPartitionFiles(system_items, target_zip, None)
+ if vendor_diff:
+ target_symlinks.extend(CopyPartitionFiles(vendor_items, target_zip, None))
+
+ temp_script = script.MakeTemporary()
+ system_items.GetMetadata(target_zip)
+ system_items.Get("system").SetPermissions(temp_script)
+ if vendor_diff:
+ vendor_items.GetMetadata(target_zip)
+ vendor_items.Get("vendor").SetPermissions(temp_script)
+
+ # Note that this call will mess up the trees of Items, so make sure
+ # we're done with them.
+ source_symlinks = CopyPartitionFiles(system_items, source_zip, None)
+ if vendor_diff:
+ source_symlinks.extend(CopyPartitionFiles(vendor_items, source_zip, None))
+
+ target_symlinks_d = dict([(i[1], i[0]) for i in target_symlinks])
+ source_symlinks_d = dict([(i[1], i[0]) for i in source_symlinks])
+
+ # Delete all the symlinks in source that aren't in target. This
+ # needs to happen before verbatim files are unpacked, in case a
+ # symlink in the source is replaced by a real file in the target.
+ to_delete = []
+ for dest, link in source_symlinks:
+ if link not in target_symlinks_d:
+ to_delete.append(link)
+ script.DeleteFiles(to_delete)
+
+ if system_diff.verbatim_targets:
+ script.Print("Unpacking new system files...")
+ script.UnpackPackageDir("system", "/system")
+ if vendor_diff and vendor_diff.verbatim_targets:
+ script.Print("Unpacking new vendor files...")
+ script.UnpackPackageDir("vendor", "/vendor")
+
+ if updating_recovery and not target_has_recovery_patch:
+ script.Print("Unpacking new recovery...")
+ script.UnpackPackageDir("recovery", "/system")
+
+ system_diff.EmitRenames(script)
+ if vendor_diff:
+ vendor_diff.EmitRenames(script)
+
+ script.Print("Symlinks and permissions...")
+
+ # Create all the symlinks that don't already exist, or point to
+ # somewhere different than what we want. Delete each symlink before
+ # creating it, since the 'symlink' command won't overwrite.
+ to_create = []
+ for dest, link in target_symlinks:
+ if link in source_symlinks_d:
+ if dest != source_symlinks_d[link]:
+ to_create.append((dest, link))
+ else:
+ to_create.append((dest, link))
+ script.DeleteFiles([i[1] for i in to_create])
+ script.MakeSymlinks(to_create)
+
+ # Now that the symlinks are created, we can set all the
+ # permissions.
+ script.AppendScript(temp_script)
+
+ # Do device-specific installation (eg, write radio image).
+ device_specific.IncrementalOTA_InstallEnd()
+
+ if OPTIONS.extra_script is not None:
+ script.AppendExtra(OPTIONS.extra_script)
+
+ # Patch the build.prop file last, so if something fails but the
+ # device can still come up, it appears to be the old build and will
+ # get set the OTA package again to retry.
+ script.Print("Patching remaining system files...")
+ system_diff.EmitDeferredPatches(script)
+
+ if OPTIONS.wipe_user_data:
+ script.Print("Erasing user data...")
+ script.FormatPartition("/data")
+
+ if OPTIONS.two_step:
+ script.AppendExtra("""
+set_stage("%(bcb_dev)s", "");
+endif;
+endif;
+""" % bcb_dev)
+
+ if OPTIONS.verify and system_diff:
+ script.Print("Remounting and verifying system partition files...")
+ script.Unmount("/system")
+ script.Mount("/system")
+ system_diff.EmitExplicitTargetVerification(script)
+
+ if OPTIONS.verify and vendor_diff:
+ script.Print("Remounting and verifying vendor partition files...")
+ script.Unmount("/vendor")
+ script.Mount("/vendor")
+ vendor_diff.EmitExplicitTargetVerification(script)
+ script.AddToZip(target_zip, output_zip, input_path=OPTIONS.updater_binary)
+
+ WriteMetadata(metadata, output_zip)
+
+
+def main(argv):
+
+ def option_handler(o, a):
+ if o == "--board_config":
+ pass # deprecated
+ elif o in ("-k", "--package_key"):
+ OPTIONS.package_key = a
+ elif o in ("-i", "--incremental_from"):
+ OPTIONS.incremental_source = a
+ elif o in ("-w", "--wipe_user_data"):
+ OPTIONS.wipe_user_data = True
+ elif o in ("-n", "--no_prereq"):
+ OPTIONS.omit_prereq = True
+ elif o in ("-o", "--oem_settings"):
+ OPTIONS.oem_source = a
+ elif o in ("-e", "--extra_script"):
+ OPTIONS.extra_script = a
+ elif o in ("-a", "--aslr_mode"):
+ if a in ("on", "On", "true", "True", "yes", "Yes"):
+ OPTIONS.aslr_mode = True
+ else:
+ OPTIONS.aslr_mode = False
+ elif o in ("-t", "--worker_threads"):
+ if a.isdigit():
+ OPTIONS.worker_threads = int(a)
+ else:
+ raise ValueError("Cannot parse value %r for option %r - only "
+ "integers are allowed." % (a, o))
+ elif o in ("-2", "--two_step"):
+ OPTIONS.two_step = True
+ elif o == "--no_signing":
+ OPTIONS.no_signing = True
+ elif o == "--verify":
+ OPTIONS.verify = True
+ elif o == "--block":
+ OPTIONS.block_based = True
+ elif o in ("-b", "--binary"):
+ OPTIONS.updater_binary = a
+ elif o in ("--no_fallback_to_full",):
+ OPTIONS.fallback_to_full = False
+ else:
+ return False
+ return True
+
+ args = common.ParseOptions(argv, __doc__,
+ extra_opts="b:k:i:d:wne:t:a:2o:",
+ extra_long_opts=[
+ "board_config=",
+ "package_key=",
+ "incremental_from=",
+ "wipe_user_data",
+ "no_prereq",
+ "extra_script=",
+ "worker_threads=",
+ "aslr_mode=",
+ "two_step",
+ "no_signing",
+ "block",
+ "binary=",
+ "oem_settings=",
+ "verify",
+ "no_fallback_to_full",
+ ], extra_option_handler=option_handler)
+
+ if len(args) != 2:
+ common.Usage(__doc__)
+ sys.exit(1)
+
+ if OPTIONS.extra_script is not None:
+ OPTIONS.extra_script = open(OPTIONS.extra_script).read()
+
+ print "unzipping target target-files..."
+ OPTIONS.input_tmp, input_zip = common.UnzipTemp(args[0])
+
+ OPTIONS.target_tmp = OPTIONS.input_tmp
+ OPTIONS.info_dict = common.LoadInfoDict(input_zip)
+
+ # If this image was originally labelled with SELinux contexts, make sure we
+ # also apply the labels in our new image. During building, the "file_contexts"
+ # is in the out/ directory tree, but for repacking from target-files.zip it's
+ # in the root directory of the ramdisk.
+ if "selinux_fc" in OPTIONS.info_dict:
+ OPTIONS.info_dict["selinux_fc"] = os.path.join(
+ OPTIONS.input_tmp, "BOOT", "RAMDISK", "file_contexts")
+
+ if OPTIONS.verbose:
+ print "--- target info ---"
+ common.DumpInfoDict(OPTIONS.info_dict)
+
+ # If the caller explicitly specified the device-specific extensions
+ # path via -s/--device_specific, use that. Otherwise, use
+ # META/releasetools.py if it is present in the target target_files.
+ # Otherwise, take the path of the file from 'tool_extensions' in the
+ # info dict and look for that in the local filesystem, relative to
+ # the current directory.
+
+ if OPTIONS.device_specific is None:
+ from_input = os.path.join(OPTIONS.input_tmp, "META", "releasetools.py")
+ if os.path.exists(from_input):
+ print "(using device-specific extensions from target_files)"
+ OPTIONS.device_specific = from_input
+ else:
+ OPTIONS.device_specific = OPTIONS.info_dict.get("tool_extensions", None)
+
+ if OPTIONS.device_specific is not None:
+ OPTIONS.device_specific = os.path.abspath(OPTIONS.device_specific)
+
+ while True:
+
+ if OPTIONS.no_signing:
+ if os.path.exists(args[1]):
+ os.unlink(args[1])
+ output_zip = zipfile.ZipFile(args[1], "w",
+ compression=zipfile.ZIP_DEFLATED)
+ else:
+ temp_zip_file = tempfile.NamedTemporaryFile()
+ output_zip = zipfile.ZipFile(temp_zip_file, "w",
+ compression=zipfile.ZIP_DEFLATED)
+
+ if OPTIONS.incremental_source is None:
+ WriteFullOTAPackage(input_zip, output_zip)
+ if OPTIONS.package_key is None:
+ OPTIONS.package_key = OPTIONS.info_dict.get(
+ "default_system_dev_certificate",
+ "build/target/product/security/testkey")
+ break
+
+ else:
+ print "unzipping source target-files..."
+ OPTIONS.source_tmp, source_zip = common.UnzipTemp(
+ OPTIONS.incremental_source)
+ OPTIONS.target_info_dict = OPTIONS.info_dict
+ OPTIONS.source_info_dict = common.LoadInfoDict(source_zip)
+ if "selinux_fc" in OPTIONS.source_info_dict:
+ OPTIONS.source_info_dict["selinux_fc"] = os.path.join(
+ OPTIONS.source_tmp, "BOOT", "RAMDISK", "file_contexts")
+ if OPTIONS.package_key is None:
+ OPTIONS.package_key = OPTIONS.source_info_dict.get(
+ "default_system_dev_certificate",
+ "build/target/product/security/testkey")
+ if OPTIONS.verbose:
+ print "--- source info ---"
+ common.DumpInfoDict(OPTIONS.source_info_dict)
+ try:
+ WriteIncrementalOTAPackage(input_zip, source_zip, output_zip)
+ break
+ except ValueError:
+ if not OPTIONS.fallback_to_full:
+ raise
+ print "--- failed to build incremental; falling back to full ---"
+ OPTIONS.incremental_source = None
+ output_zip.close()
+
+ output_zip.close()
+
+ if not OPTIONS.no_signing:
+ SignOutput(temp_zip_file.name, args[1])
+ temp_zip_file.close()
+
+ print "done."
+
+
+if __name__ == '__main__':
+ try:
+ common.CloseInheritedPipes()
+ main(sys.argv[1:])
+ except common.ExternalError as e:
+ print
+ print " ERROR: %s" % (e,)
+ print
+ sys.exit(1)
+ finally:
+ common.Cleanup()