[HICN-534] Major rework on libtransport organization

Change-Id: I361b83a18b4fd59be136d5f0817fc28e17e89884
Signed-off-by: Mauro Sardara <msardara@cisco.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/libtransport/src/utils/daemonizator.cc b/libtransport/src/utils/daemonizator.cc
new file mode 100644
index 000000000..c51a68d14
--- /dev/null
+++ b/libtransport/src/utils/daemonizator.cc
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * 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.
+ */
+
+#ifndef _WIN32
+#include <hicn/transport/errors/runtime_exception.h>
+#include <hicn/transport/utils/daemonizator.h>
+#include <hicn/transport/utils/log.h>
+
+#include <sys/stat.h>
+#include <unistd.h>
+
+namespace utils {
+
+void Daemonizator::daemonize(bool close_fds) {
+  pid_t process_id = 0;
+  pid_t sid = 0;
+
+  // Create child process
+  process_id = fork();
+
+  // Indication of fork() failure
+  if (process_id < 0) {
+    throw errors::RuntimeException("Fork failed.");
+  }
+
+  // PARENT PROCESS. Need to kill it.
+  if (process_id > 0) {
+    TRANSPORT_LOGE("Process id of child process %d", process_id);
+    // return success in exit status
+    exit(EXIT_SUCCESS);
+  }
+
+  // unmask the file mode
+  umask(0);
+
+  // set new session
+  sid = setsid();
+  if (sid < 0) {
+    // Return failure
+    exit(EXIT_FAILURE);
+  }
+
+  // Change the current working directory to root.
+  int ret = chdir("/");
+
+  if (ret < 0) {
+    throw errors::RuntimeException("Error changing working directory to root");
+  }
+
+  // Close stdin. Redirect stdout and stderr to file if possible
+
+  if (close_fds) {
+    close(STDOUT_FILENO);
+    close(STDERR_FILENO);
+  }
+
+  close(STDIN_FILENO);
+
+  // Really start application
+}
+
+}  // namespace utils
+
+#endif