blob: 2bb6dd0573b3d0be3eaaba2c2f993f6367caabbb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/*
* Copyright (c) 2017 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.
*/
#include "icnet_utils_daemonizator.h"
#include "icnet_errors_runtime_exception.h"
#include <cstdlib>
#include <unistd.h>
#include <iostream>
#include <sys/stat.h>
namespace icnet {
namespace utils {
void Daemonizator::daemonize() {
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) {
std::cout << "Process id of child process " << process_id << std::endl;
// 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. stdout and stderr
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
// Really start application
}
}
}
|
