Bug 739121: Nonblocking IO handling error in RIL.cpp, r=qdot

ipc/ril/Ril.cpp

@@ -278,6 +278,15 @@ RilClient::OnFileCanReadWithoutBlocking(int fd)
             mIncoming = new RilRawData();
             ssize_t ret = read(fd, mIncoming->mData, RilRawData::MAX_DATA_SIZE);
             if (ret <= 0) {
+                if (ret == -1) {
+                    if (errno == EINTR) {
+                        continue; // retry system call when interrupted
+                    }
+                    else if (errno == EAGAIN || errno == EWOULDBLOCK) {
+                        return; // no data available: return and re-poll
+                    }
+                    // else fall through to error handling on other errno's
+                }
                 LOG("Cannot read from network, error %d\n", ret);
                 // At this point, assume that we can't actually access
                 // the socket anymore, and start a reconnect loop.