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1/*
2 * initreq.h Interface to talk to init through /dev/initctl.
3 *
4 * Copyright (C) 1995-2004 Miquel van Smoorenburg
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * Version: @(#)initreq.h 1.28 31-Mar-2004 MvS
12 *
13 */
14#ifndef _INITREQ_H
15#define _INITREQ_H
16
17#include <sys/param.h>
18
19#if defined(__FreeBSD_kernel__)
20# define INIT_FIFO "/etc/.initctl"
21#else
22# define INIT_FIFO "/dev/initctl"
23#endif
24
25#define INIT_MAGIC 0x03091969
26#define INIT_CMD_START 0
27#define INIT_CMD_RUNLVL 1
28#define INIT_CMD_POWERFAIL 2
29#define INIT_CMD_POWERFAILNOW 3
30#define INIT_CMD_POWEROK 4
31#define INIT_CMD_BSD 5
32#define INIT_CMD_SETENV 6
33#define INIT_CMD_UNSETENV 7
34
35#define INIT_CMD_CHANGECONS 12345
36
37#ifdef MAXHOSTNAMELEN
38# define INITRQ_HLEN MAXHOSTNAMELEN
39#else
40# define INITRQ_HLEN 64
41#endif
42
43/*
44 * This is what BSD 4.4 uses when talking to init.
45 * Linux doesn't use this right now.
46 */
47struct init_request_bsd {
48 char gen_id[8]; /* Beats me.. telnetd uses "fe" */
49 char tty_id[16]; /* Tty name minus /dev/tty */
50 char host[INITRQ_HLEN]; /* Hostname */
51 char term_type[16]; /* Terminal type */
52 int signal; /* Signal to send */
53 int pid; /* Process to send to */
54 char exec_name[128]; /* Program to execute */
55 char reserved[128]; /* For future expansion. */
56};
57
58
59/*
60 * Because of legacy interfaces, "runlevel" and "sleeptime"
61 * aren't in a seperate struct in the union.
62 *
63 * The weird sizes are because init expects the whole
64 * struct to be 384 bytes.
65 */
66struct init_request {
67 int magic; /* Magic number */
68 int cmd; /* What kind of request */
69 int runlevel; /* Runlevel to change to */
70 int sleeptime; /* Time between TERM and KILL */
71 union {
72 struct init_request_bsd bsd;
73 char data[368];
74 } i;
75};
76
77#endif