diff options
Diffstat (limited to 'libs/binder/RpcSession.cpp')
-rw-r--r-- | libs/binder/RpcSession.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libs/binder/RpcSession.cpp b/libs/binder/RpcSession.cpp index 90ce4d6d3f..254b99c29a 100644 --- a/libs/binder/RpcSession.cpp +++ b/libs/binder/RpcSession.cpp @@ -87,6 +87,12 @@ bool RpcSession::setProtocolVersion(uint32_t version) { } std::lock_guard<std::mutex> _l(mMutex); + if (mProtocolVersion && version > *mProtocolVersion) { + ALOGE("Cannot upgrade explicitly capped protocol version %u to newer version %u", + *mProtocolVersion, version); + return false; + } + mProtocolVersion = version; return true; } |