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>
diff --git a/libsysutils/src/NetlinkEvent.cpp b/libsysutils/src/NetlinkEvent.cpp
new file mode 100644
index 0000000..69cd3e7
--- /dev/null
+++ b/libsysutils/src/NetlinkEvent.cpp
@@ -0,0 +1,93 @@
+/*
+ * 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 <stdlib.h>
+
+#define LOG_TAG "NetlinkEvent"
+#include <cutils/log.h>
+
+#include <sysutils/NetlinkEvent.h>
+
+const int NetlinkEvent::NlActionUnknown = 0;
+const int NetlinkEvent::NlActionAdd = 1;
+const int NetlinkEvent::NlActionRemove = 2;
+const int NetlinkEvent::NlActionChange = 3;
+
+NetlinkEvent::NetlinkEvent() {
+ mAction = NlActionUnknown;
+}
+
+NetlinkEvent::~NetlinkEvent() {
+ int i;
+ if (mPath)
+ free(mPath);
+ if (mSubsystem)
+ free(mSubsystem);
+ for (i = 0; i < NL_PARAMS_MAX; i++) {
+ if (!mParams[i])
+ break;
+ free(mParams[i]);
+ }
+}
+
+bool NetlinkEvent::decode(char *buffer, int size) {
+ char *s = buffer;
+ char *end;
+ int param_idx = 0;
+ int i;
+ int first = 1;
+
+ end = s + size;
+ while (s < end) {
+ if (first) {
+ char *p;
+ for (p = s; *p != '@'; p++);
+ p++;
+ mPath = strdup(p);
+ first = 0;
+ } else {
+ if (!strncmp(s, "ACTION=", strlen("ACTION="))) {
+ char *a = s + strlen("ACTION=");
+ if (!strcmp(a, "add"))
+ mAction = NlActionAdd;
+ else if (!strcmp(a, "remove"))
+ mAction = NlActionRemove;
+ else if (!strcmp(a, "change"))
+ mAction = NlActionChange;
+ } else if (!strncmp(s, "SEQNUM=", strlen("SEQNUM=")))
+ mSeq = atoi(s + strlen("SEQNUM="));
+ else if (!strncmp(s, "SUBSYSTEM=", strlen("SUBSYSTEM=")))
+ mSubsystem = strdup(s + strlen("SUBSYSTEM="));
+ else
+ mParams[param_idx++] = strdup(s);
+ }
+ s+= strlen(s) + 1;
+ }
+ return true;
+}
+
+const char *NetlinkEvent::findParam(const char *paramName) {
+ int i;
+
+ for (i = 0; i < NL_PARAMS_MAX; i++) {
+ if (!mParams[i])
+ break;
+ if (!strncmp(mParams[i], paramName, strlen(paramName)))
+ return &mParams[i][strlen(paramName) + 1];
+ }
+
+ LOGE("NetlinkEvent::FindParam(): Parameter '%s' not found", paramName);
+ return NULL;
+}