From 4e975bb488bb3947703e95cb33a4838adda680f7 Mon Sep 17 00:00:00 2001
From: Amith Yamasani <yamasani@google.com>
Date: Wed, 4 May 2011 14:49:28 -0700
Subject: [PATCH] Multi-user - 1st major checkin

Switching activity stacks
Cache ContentProvider per user
Long-press power to switch users (on phone)

Added ServiceMap for separating services by user
Launch PendingIntents on the correct user's uid
Fix task switching from Recents list
AppWidgetService is mostly working.

Commands added to pm and am to allow creating and switching profiles.

Change-Id: I15810e8cfbe50a04bd3323a7ef5a8ff4230870ed
---
 include/binder/IPCThreadState.h | 2 ++
 libs/binder/IPCThreadState.cpp  | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/include/binder/IPCThreadState.h b/include/binder/IPCThreadState.h
index 3378d9725..691ba2fa1 100644
--- a/include/binder/IPCThreadState.h
+++ b/include/binder/IPCThreadState.h
@@ -41,6 +41,7 @@ public:
 
             int                 getCallingPid();
             int                 getCallingUid();
+            int                 getOrigCallingUid();
 
             void                setStrictModePolicy(int32_t policy);
             int32_t             getStrictModePolicy() const;
@@ -116,6 +117,7 @@ private:
             status_t            mLastError;
             pid_t               mCallingPid;
             uid_t               mCallingUid;
+            uid_t               mOrigCallingUid;
             int32_t             mStrictModePolicy;
             int32_t             mLastTransactionBinderFlags;
 };
diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index 629b89926..b578a6ce9 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -371,6 +371,11 @@ int IPCThreadState::getCallingUid()
     return mCallingUid;
 }
 
+int IPCThreadState::getOrigCallingUid()
+{
+    return mOrigCallingUid;
+}
+
 int64_t IPCThreadState::clearCallingIdentity()
 {
     int64_t token = ((int64_t)mCallingUid<<32) | mCallingPid;
@@ -641,6 +646,7 @@ IPCThreadState::IPCThreadState()
 {
     pthread_setspecific(gTLS, this);
     clearCaller();
+    mOrigCallingUid = mCallingUid;
     mIn.setDataCapacity(256);
     mOut.setDataCapacity(256);
 }
@@ -987,6 +993,7 @@ status_t IPCThreadState::executeCommand(int32_t cmd)
             
             mCallingPid = tr.sender_pid;
             mCallingUid = tr.sender_euid;
+            mOrigCallingUid = tr.sender_euid;
             
             int curPrio = getpriority(PRIO_PROCESS, mMyThreadId);
             if (gDisableBackgroundScheduling) {
@@ -1045,6 +1052,7 @@ status_t IPCThreadState::executeCommand(int32_t cmd)
             
             mCallingPid = origPid;
             mCallingUid = origUid;
+            mOrigCallingUid = origUid;
 
             IF_LOG_TRANSACTIONS() {
                 TextOutput::Bundle _b(alog);