1 files changed, 49 insertions, 0 deletions
diff --git a/core/java/android/os/Process.java b/core/java/android/os/Process.java
index 9b29fb1dfaac..46140a4ab399 100644
--- a/core/java/android/os/Process.java
+++ b/core/java/android/os/Process.java
@@ -34,8 +34,12 @@ import dalvik.system.VMRuntime;
 
 import libcore.io.IoUtils;
 
+import java.io.BufferedReader;
 import java.io.FileDescriptor;
+import java.io.FileReader;
+import java.io.IOException;
 import java.util.Map;
+import java.util.StringTokenizer;
 import java.util.concurrent.TimeoutException;
 
 /**
@@ -208,6 +212,12 @@ public class Process {
     public static final int SE_UID = 1068;
 
     /**
+     * Defines the UID/GID for the iorapd.
+     * @hide
+     */
+    public static final int IORAPD_UID = 1071;
+
+    /**
      * Defines the UID/GID for the NetworkStack app.
      * @hide
      */
@@ -1397,4 +1407,43 @@ public class Process {
     }
 
     private static native int nativePidFdOpen(int pid, int flags) throws ErrnoException;
+
+    /**
+     * Checks if a process corresponding to a specific pid owns any file locks.
+     * @param pid The process ID for which we want to know the existence of file locks.
+     * @return true If the process holds any file locks, false otherwise.
+     * @throws IOException if /proc/locks can't be accessed.
+     *
+     * @hide
+     */
+    public static boolean hasFileLocks(int pid) throws Exception {
+        BufferedReader br = null;
+
+        try {
+            br = new BufferedReader(new FileReader("/proc/locks"));
+            String line;
+
+            while ((line = br.readLine()) != null) {
+                StringTokenizer st = new StringTokenizer(line);
+
+                for (int i = 0; i < 5 && st.hasMoreTokens(); i++) {
+                    String str = st.nextToken();
+                    try {
+                        if (i == 4 && Integer.parseInt(str) == pid) {
+                            return true;
+                        }
+                    } catch (NumberFormatException nfe) {
+                        throw new Exception("Exception parsing /proc/locks at \" "
+                                + line +  " \", token #" + i);
+                    }
+                }
+            }
+
+            return false;
+        } finally {
+            if (br != null) {
+                br.close();
+            }
+        }
+    }
 }