Allow properties to be derived from partition-specific properties
This change allows ro.product.[brand|device|manufacturer|model|name] and
ro.build.fingerprint to be derived at boot time (and in the OTA
generation scripts) from partition-specific properties.
Test: booted system image, verified properties
Test: booted recovery image, verified properties
Test: unpacked OTA package, verified build fingerprint
Bug: 120123525
Change-Id: Iadd230a0577f35c7c37b0f911e91a5c2863ed1fe
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index 3fbcbcf..4336cb3 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -259,6 +259,12 @@
device: The device name, which could come from OEM dicts if applicable.
"""
+ _RO_PRODUCT_RESOLVE_PROPS = ["ro.product.brand", "ro.product.device",
+ "ro.product.manufacturer", "ro.product.model",
+ "ro.product.name"]
+ _RO_PRODUCT_PROPS_DEFAULT_SOURCE_ORDER = ["product", "product_services",
+ "odm", "vendor", "system"]
+
def __init__(self, info_dict, oem_dicts):
"""Initializes a BuildInfo instance with the given dicts.
@@ -325,11 +331,43 @@
def GetBuildProp(self, prop):
"""Returns the inquired build property."""
+ if prop in BuildInfo._RO_PRODUCT_RESOLVE_PROPS:
+ return self._ResolveRoProductBuildProp(prop)
+
try:
return self.info_dict.get("build.prop", {})[prop]
except KeyError:
raise common.ExternalError("couldn't find %s in build.prop" % (prop,))
+ def _ResolveRoProductBuildProp(self, prop):
+ """Resolves the inquired ro.product.* build property"""
+ prop_val = self.info_dict.get("build.prop", {}).get(prop)
+ if prop_val:
+ return prop_val
+
+ source_order_val = self.info_dict.get("build.prop", {}).get(
+ "ro.product.property_source_order")
+ if source_order_val:
+ source_order = source_order_val.split(",")
+ else:
+ source_order = BuildInfo._RO_PRODUCT_PROPS_DEFAULT_SOURCE_ORDER
+
+ # Check that all sources in ro.product.property_source_order are valid
+ if any([x not in BuildInfo._RO_PRODUCT_PROPS_DEFAULT_SOURCE_ORDER
+ for x in source_order]):
+ raise common.ExternalError(
+ "Invalid ro.product.property_source_order '{}'".format(source_order))
+
+ for source in source_order:
+ source_prop = prop.replace("ro.product", "ro.product.{}".format(source),
+ 1)
+ prop_val = self.info_dict.get("{}.build.prop".format(source), {}).get(
+ source_prop)
+ if prop_val:
+ return prop_val
+
+ raise common.ExternalError("couldn't resolve {}".format(prop))
+
def GetVendorBuildProp(self, prop):
"""Returns the inquired vendor build property."""
try:
@@ -345,7 +383,18 @@
def CalculateFingerprint(self):
if self.oem_props is None:
- return self.GetBuildProp("ro.build.fingerprint")
+ try:
+ return self.GetBuildProp("ro.build.fingerprint")
+ except common.ExternalError:
+ return "{}/{}/{}:{}/{}/{}:{}/{}".format(
+ self.GetBuildProp("ro.product.brand"),
+ self.GetBuildProp("ro.product.name"),
+ self.GetBuildProp("ro.product.device"),
+ self.GetBuildProp("ro.build.version.release"),
+ self.GetBuildProp("ro.build.id"),
+ self.GetBuildProp("ro.build.version.incremental"),
+ self.GetBuildProp("ro.build.type"),
+ self.GetBuildProp("ro.build.tags"))
return "%s/%s/%s:%s" % (
self.GetOemProperty("ro.product.brand"),
self.GetOemProperty("ro.product.name"),