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authorMauro Sardara <msardara@cisco.com>2020-02-21 11:52:28 +0100
committerMauro Sardara <msardara@cisco.com>2020-02-26 13:19:16 +0100
commitf4433f28b509a9f67ca85d79000ccf9c2f4b7a24 (patch)
tree0f754bc9d8222f3ace11849165753acd85be3b38 /libtransport/src/utils/daemonizator.cc
parent0e7669445b6be1163189521eabed7dd0124043c8 (diff)
[HICN-534] Major rework on libtransport organization
Change-Id: I361b83a18b4fd59be136d5f0817fc28e17e89884 Signed-off-by: Mauro Sardara <msardara@cisco.com>
Diffstat (limited to 'libtransport/src/utils/daemonizator.cc')
-rw-r--r--libtransport/src/utils/daemonizator.cc76
1 files changed, 76 insertions, 0 deletions
diff --git a/libtransport/src/utils/daemonizator.cc b/libtransport/src/utils/daemonizator.cc
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+++ b/libtransport/src/utils/daemonizator.cc
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+/*
+ * 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