commit 32150288f88b2a1a6e7268b24cd8b2646b1af5d6
author Steven Moreland <smoreland@google.com> Fri Nov 12 22:54:53 2021 +0000
committer Andrei Homescu <ahomescu@google.com> Fri Jul 01 05:50:52 2022 +0000
tree 4dab826b41b4fec3fb19ed9d4aa2be1364d300f0
parent ffa3aaac5513bc2ef6c7d3f88db9976f86275f88

libbinder: build option to disable the kernel IPC, part 1/2

Add a new BINDER_WITH_KERNEL_IPC macro to enable all code that
uses IPCThreadState or ProcessState. This macro is defined for
Android libbinder but left out for non-Android builds.

Bug: 224644083
Test: m
Change-Id: I622757fcc0f9885dbf271c0ffa84c54938d50774

libs/binder/Debug.cpp

diff --git a/libs/binder/Debug.cpp b/libs/binder/Debug.cpp
index e4ac4b4..c6e4fb3 100644
--- a/libs/binder/Debug.cpp
+++ b/libs/binder/Debug.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "Debug.h"
+#include "BuildFlags.h"
 
 #include <binder/ProcessState.h>
 
@@ -301,6 +302,11 @@
 }
 
 ssize_t getBinderKernelReferences(size_t count, uintptr_t* buf) {
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return 0;
+    }
+
     sp<ProcessState> proc = ProcessState::selfOrNull();
     if (proc.get() == nullptr) {
         return 0;