libsysutils: New C++ system convenience library

        This library contains re-usable classes for common
    system level daemons. Initial consumers of this library
    are 'nexus' and 'vold2'

Signed-off-by: San Mehat <san@google.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/libsysutils/src/NetlinkListener.cpp b/libsysutils/src/NetlinkListener.cpp
new file mode 100644
index 0000000..d871341
--- /dev/null
+++ b/libsysutils/src/NetlinkListener.cpp
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <errno.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#define LOG_TAG "NetlinkListener"
+#include <cutils/log.h>
+
+#include <sysutils/NetlinkListener.h>
+#include <sysutils/NetlinkEvent.h>
+
+NetlinkListener::NetlinkListener(int socket) :
+                            SocketListener(socket, false) {
+}
+
+bool NetlinkListener::onDataAvailable(int socket)
+{
+    LOGD("NetlinkListener::onDataAvailable()");
+
+    int count;
+
+    if ((count = recv(socket, mBuffer, sizeof(mBuffer), 0)) < 0) {
+        LOGE("recv failed (%s)", strerror(errno));
+        return false;
+    }
+
+    NetlinkEvent *evt = new NetlinkEvent();
+    if (!evt->decode(mBuffer, count)) {
+        LOGE("Error decoding NetlinkEvent");
+        goto out;
+    }
+
+    LOGD("Ignoring '%s' netlink event", evt->getSubsystem());
+
+out:
+    delete evt;
+    return true;
+}