Add an lshal command.
lshal lists services registered to the binderized
IServiceManager and all services available to the
passthrough IServiceManager as *.so libraries. It
also dumps the reference count for each service.
Bug: 34712252
Test: adb shell lshal
Change-Id: I9436a033cf736b8a8c307a2e87549c9db6379f3f
diff --git a/cmds/lshal/Android.bp b/cmds/lshal/Android.bp
new file mode 100644
index 0000000..dd8104d
--- /dev/null
+++ b/cmds/lshal/Android.bp
@@ -0,0 +1,26 @@
+// Copyright (C) 2016 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.
+
+cc_binary {
+ name: "lshal",
+ shared_libs: [
+ "libutils",
+ "libhidlbase",
+ "android.hidl.manager@1.0",
+ "libhidltransport",
+ ],
+ srcs: [
+ "lshal.cpp"
+ ],
+}
diff --git a/cmds/lshal/lshal.cpp b/cmds/lshal/lshal.cpp
new file mode 100644
index 0000000..bc8bf39
--- /dev/null
+++ b/cmds/lshal/lshal.cpp
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2016 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 <getopt.h>
+
+#include <map>
+#include <iomanip>
+#include <iostream>
+#include <sstream>
+
+#include <android/hidl/manager/1.0/IServiceManager.h>
+#include <hidl/ServiceManagement.h>
+
+template <typename A, typename B, typename C, typename D>
+void printColumn(std::stringstream &stream,
+ const A &a, const B &b, const C &c, const D &d) {
+ using namespace ::std;
+ stream << left
+ << setw(70) << a << "\t"
+ << setw(20) << b << "\t"
+ << setw(10) << c << "\t"
+ << setw(5) << d << "\t"
+ << endl;
+}
+
+int dump() {
+ using namespace ::std;
+ using namespace ::android::hardware;
+ using namespace ::android::hidl::manager::V1_0;
+
+ std::map<std::string, ::android::sp<IServiceManager>> mapping = {
+ {"hwbinder", defaultServiceManager()},
+ {"passthrough", getPassthroughServiceManager()}
+ };
+
+ std::stringstream stream;
+
+ stream << "All services:" << endl;
+ stream << left;
+ printColumn(stream, "Interface", "Instance", "Transport", "Ref");
+
+ for (const auto &pair : mapping) {
+ const std::string &mode = pair.first;
+ const ::android::sp<IServiceManager> &manager = pair.second;
+
+ if (manager == nullptr) {
+ cerr << "Failed to get IServiceManager for " << mode << "!" << endl;
+ continue;
+ }
+
+ auto ret = manager->debugDump([&](const auto ®istered) {
+ for (const auto &info : registered) {
+ printColumn(stream,
+ info.interfaceName,
+ info.instanceName.empty() ? "N/A" : info.instanceName,
+ mode,
+ info.refCount == 0 ? "N/A" : std::to_string(info.refCount - 1));
+ }
+ });
+ if (!ret.isOk()) {
+ cerr << "Failed to list services for " << mode << ": "
+ << ret.description() << endl;
+ }
+ }
+ cout << stream.rdbuf();
+ return 0;
+}
+
+int usage() {
+ using namespace ::std;
+ cerr
+ << "usage: lshal" << endl
+ << " To dump all hals." << endl
+ << "or:" << endl
+ << " lshal [-h|--help]" << endl
+ << " -h, --help: show this help information." << endl;
+ return -1;
+}
+
+int main(int argc, char **argv) {
+ static struct option longOptions[] = {
+ {"help", no_argument, 0, 'h' },
+ { 0, 0, 0, 0 }
+ };
+
+ int optionIndex;
+ int c;
+ optind = 1;
+ for (;;) {
+ // using getopt_long in case we want to add other options in the future
+ c = getopt_long(argc, argv, "h", longOptions, &optionIndex);
+ if (c == -1) {
+ break;
+ }
+ switch (c) {
+ case 'h': // falls through
+ default: // see unrecognized options
+ return usage();
+ }
+ }
+ return dump();
+
+}