commit fc8d8850ab5164c26386210db2e3fe1bc286b40d
author Yifan Hong <elsk@google.com> Wed Jul 26 10:47:14 2017 -0700
committer Yifan Hong <elsk@google.com> Wed Aug 02 17:01:24 2017 -0700
tree 3bf312a583d430c9f6395e7690765aa707e6cf23
parent 3f68cca4d606454b7b3c5104ff01414630f5cae3

Use getpwnam()/getgrnam() instead of AID_* macros (libgui)

AID_* values are defined in libcutils private headers and hence
is not exported. Use getpwnam() instead to get these values.

Test: device boots
Bug: 63135587
Change-Id: I417d0472df2170ab190c1c1622117df58292125c
Merged-In: I417d0472df2170ab190c1c1622117df58292125c

libs/gui/BufferQueueConsumer.cpp

diff --git a/libs/gui/BufferQueueConsumer.cpp b/libs/gui/BufferQueueConsumer.cpp
index ee4c58c..17ff249 100644
--- a/libs/gui/BufferQueueConsumer.cpp
+++ b/libs/gui/BufferQueueConsumer.cpp
@@ -15,6 +15,8 @@
  */
 
 #include <inttypes.h>
+#include <pwd.h>
+#include <sys/types.h>
 
 #define LOG_TAG "BufferQueueConsumer"
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
@@ -34,7 +36,6 @@
 
 #include <binder/IPCThreadState.h>
 #include <binder/PermissionCache.h>
-#include <private/android_filesystem_config.h>
 
 namespace android {
 
@@ -734,12 +735,18 @@
 }
 
 void BufferQueueConsumer::dumpState(String8& result, const char* prefix) const {
+    struct passwd* pwd = getpwnam("shell");
+    uid_t shellUid = pwd ? pwd->pw_uid : 0;
+    if (!shellUid) {
+        BQ_LOGE("Cannot get AID_SHELL");
+        return;
+    }
+
     const IPCThreadState* ipc = IPCThreadState::self();
     const pid_t pid = ipc->getCallingPid();
     const uid_t uid = ipc->getCallingUid();
-    if ((uid != AID_SHELL)
-            && !PermissionCache::checkPermission(String16(
-            "android.permission.DUMP"), pid, uid)) {
+    if ((uid != shellUid) &&
+        !PermissionCache::checkPermission(String16("android.permission.DUMP"), pid, uid)) {
         result.appendFormat("Permission Denial: can't dump BufferQueueConsumer "
                 "from pid=%d, uid=%d\n", pid, uid);
         android_errorWriteWithInfoLog(0x534e4554, "27046057",