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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* Copyright (C) 2018 - David Oberhollenzer
*
* 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/>.
*/
#ifndef INIT_H
#define INIT_H
#include <linux/reboot.h>
#include <sys/signalfd.h>
#include <sys/reboot.h>
#include <signal.h>
#include "service.h"
#include "telinit.h"
#include "util.h"
#define RUNSVCBIN SCRIPTDIR "/runsvc"
enum {
STATUS_OK = 0,
STATUS_FAIL,
STATUS_WAIT,
STATUS_STARTED,
};
/********** runsvc.c **********/
/*
Invoke the runsvc command to execute the comands of a service.
Returns the pid of the child process containing the runsvc instance.
*/
pid_t runsvc(service_t *svc);
/*
Start a service using runsvc, but wait until the child process
terminats and return its exit status.
*/
int runsvc_wait(service_t *svc);
/********** status.c **********/
/*
Print a status message. Type is either STATUS_OK, STATUS_FAIL,
STATUS_WAIT or STATUS_STARTED.
A new-line is appended to the mssage, UNLESS type is STATUS_WAIT.
If update is true, print a carriage return first to overwrite the
current line (e.g. after a STATUS_WAIT message).
*/
void print_status(const char *msg, int type, bool update);
/********** svclist.c **********/
/*
Returns true if the list of running services contains
single shot processes.
*/
bool svclist_have_singleshot(void);
/* Add a service to the list of running services */
void svclist_add(service_t *svc);
/*
Remove a service, identifierd by PID, from the list of
running services.
Returns the service identified by the PID or NULL if there
is no such service.
*/
service_t *svclist_remove(pid_t pid);
/********** signal_<platform>.c **********/
/*
Setup signal handling. Returns -1 on error, a file descriptor on
success.
The returned file descriptor can be polled and becomes readable
when a signal arrives. Reading from it returns a signalfd_siginfo
structure.
The returned file descriptor has the close on exec flag set.
The kernel is also told to send us SIGINT signals if a user presses
the local equivalent of CTRL+ALT+DEL.
*/
int sigsetup(void);
/*
Undo everything that sigsetup() changed about signal handling and
restore the default.
*/
void sigreset(void);
#endif /* INIT_H */
|
