Add vendor_available to various libs.
These libs are required by the default implementation of the keymaster
hidl hal.
By setting vendor_available, the following may become true:
* a prebuilt library from this release may be used at runtime by
in a later releasse (by vendor code compiled against this release).
so this library shouldn't depend on runtime state that may change
in the future.
* this library may be loaded twice into a single process (potentially
an old version and a newer version). The symbols will be isolated
using linker namespaces, but this may break assumptions about 1
library in 1 process (your singletons will run twice).
Background:
This means that these modules may be built and installed twice --
once for the system partition and once for the vendor partition. The
system version will build just like today, and will be used by the
framework components on /system. The vendor version will build
against a reduced set of exports and libraries -- similar to, but
separate from, the NDK. This means that all your dependencies must
also mark vendor_available.
At runtime, /system binaries will load libraries from /system/lib*,
while /vendor binaries will load libraries from /vendor/lib*. There
are some exceptions in both directions -- bionic(libc,etc) and liblog
are always loaded from /system. And SP-HALs (OpenGL, etc) may load
/vendor code into /system processes, but the dependencies of those
libraries will load from /vendor until it reaches a library that's
always on /system. In the SP-HAL case, if both framework and vendor
libraries depend on a library of the same name, both versions will be
loaded, but they will be isolated from each other.
It's possible to compile differently -- reducing your source files,
exporting different include directories, etc. For details see:
https://android-review.googlesource.com/368372
None of this is enabled unless the device opts into the system/vendor
split with BOARD_VNDK_VERSION := current.
Test: works with BOARD_VNDK_VERSION := current
Bug: 37467707
Change-Id: I037b384d7591b79e8768a73b98f93fe4e8db5e7e
diff --git a/Android.bp b/Android.bp
index 2eb9fd5..654b076 100644
--- a/Android.bp
+++ b/Android.bp
@@ -16,6 +16,7 @@
// AndroidKeymaster implementation, e.g. one running in TrustZone.
cc_library_shared {
name: "libkeymaster_messages",
+ vendor_available: true,
srcs: [
"android_keymaster_messages.cpp",
"android_keymaster_utils.cpp",
@@ -45,6 +46,7 @@
// the function-based keymaster HAL API to the message-based AndroidKeymaster API.
cc_library_shared {
name: "libkeymaster1",
+ vendor_available: true,
srcs: [
"aes_key.cpp",
"aes_operation.cpp",
@@ -108,6 +110,7 @@
// not support the request.
cc_library_shared {
name: "libsoftkeymasterdevice",
+ vendor_available: true,
srcs: [
"ec_keymaster0_key.cpp",
"ec_keymaster1_key.cpp",
