Fix permissions problems of incidentd.

Test: manual
Change-Id: I4ee0d1f2349ee1a25a422cabf1b5b87c612710d2
diff --git a/cmds/incidentd/src/FdBuffer.cpp b/cmds/incidentd/src/FdBuffer.cpp
index 30dd339..0fff4e6 100644
--- a/cmds/incidentd/src/FdBuffer.cpp
+++ b/cmds/incidentd/src/FdBuffer.cpp
@@ -63,12 +63,14 @@
 
         int64_t remainingTime = (mStartTime + timeout) - uptimeMillis();
         if (remainingTime <= 0) {
+            if (DEBUG) ALOGD("timed out due to long read");
             mTimedOut = true;
             break;
         }
 
         int count = poll(&pfds, 1, remainingTime);
         if (count == 0) {
+            if (DEBUG) ALOGD("timed out due to block calling poll");
             mTimedOut = true;
             break;
         } else if (count < 0) {
@@ -129,6 +131,7 @@
 
         int64_t remainingTime = (mStartTime + timeoutMs) - uptimeMillis();
         if (remainingTime <= 0) {
+            if (DEBUG) ALOGD("timed out due to long read");
             mTimedOut = true;
             break;
         }
@@ -136,6 +139,7 @@
         // wait for any pfds to be ready to perform IO
         int count = poll(pfds, 3, remainingTime);
         if (count == 0) {
+            if (DEBUG) ALOGD("timed out due to block calling poll");
             mTimedOut = true;
             break;
         } else if (count < 0) {