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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
0b7964b8 12 */
f330408d 13
7a3c343c 14#pragma once
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15
16#include <sys/param.h>
17
18#if defined(__FreeBSD_kernel__)
19# define INIT_FIFO "/etc/.initctl"
20#else
21# define INIT_FIFO "/dev/initctl"
22#endif
23
24#define INIT_MAGIC 0x03091969
25#define INIT_CMD_START 0
26#define INIT_CMD_RUNLVL 1
27#define INIT_CMD_POWERFAIL 2
28#define INIT_CMD_POWERFAILNOW 3
29#define INIT_CMD_POWEROK 4
30#define INIT_CMD_BSD 5
31#define INIT_CMD_SETENV 6
32#define INIT_CMD_UNSETENV 7
33
34#define INIT_CMD_CHANGECONS 12345
35
36#ifdef MAXHOSTNAMELEN
37# define INITRQ_HLEN MAXHOSTNAMELEN
38#else
39# define INITRQ_HLEN 64
40#endif
41
42/*
43 * This is what BSD 4.4 uses when talking to init.
44 * Linux doesn't use this right now.
45 */
46struct init_request_bsd {
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47 char gen_id[8]; /* Beats me.. telnetd uses "fe" */
48 char tty_id[16]; /* Tty name minus /dev/tty */
49 char host[INITRQ_HLEN]; /* Hostname */
50 char term_type[16]; /* Terminal type */
51 int signal; /* Signal to send */
52 int pid; /* Process to send to */
53 char exec_name[128]; /* Program to execute */
54 char reserved[128]; /* For future expansion. */
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55};
56
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57/*
58 * Because of legacy interfaces, "runlevel" and "sleeptime"
96d4ce01 59 * aren't in a separate struct in the union.
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60 *
61 * The weird sizes are because init expects the whole
62 * struct to be 384 bytes.
63 */
64struct init_request {
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65 int magic; /* Magic number */
66 int cmd; /* What kind of request */
67 int runlevel; /* Runlevel to change to */
68 int sleeptime; /* Time between TERM and KILL */
69 union {
70 struct init_request_bsd bsd;
71 char data[368];
72 } i;
0b7964b8 73};