blob: 14ca34ebaf6f0567c35c3d07b863617268c7c4d9 (
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
|
/* Copyright (C) 2021 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/*!
* \brief Functions for POSIX process handling.
*/
#pragma once
#include <stdbool.h>
#include <unistd.h>
/*!
* \brief Check if PID file exists and create it if possible.
*
* \retval 0 if failed.
* \retval Current PID.
*/
unsigned long pid_check_and_create(void);
/*!
* \brief Remove PID file.
*
* \warning PID file content won't be checked.
*/
void pid_cleanup(void);
/*!
* \brief Return true if the PID is running.
*
* \param pid Process ID.
*
* \retval 1 if running.
* \retval 0 if not running (or error).
*/
bool pid_running(pid_t pid);
/*!
* \brief Update process privileges to new UID/GID.
*
* \param uid New user ID.
* \param gid New group ID.
*
* \retval KNOT_EOK on success.
* \retval KNOT_ERROR if UID or GID change failed.
*/
int proc_update_privileges(int uid, int gid);
|
