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[sysvinit.git] / src / initreq.h
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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 program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 *
20 * Version: @(#)initreq.h 1.28 31-Mar-2004 MvS
21 *
22 */
23#ifndef _INITREQ_H
24#define _INITREQ_H
25
26#include <sys/param.h>
27
28#if defined(__FreeBSD_kernel__)
29# define INIT_FIFO "/etc/.initctl"
30#else
31# define INIT_FIFO "/dev/initctl"
32#endif
33
34#define INIT_MAGIC 0x03091969
35#define INIT_CMD_START 0
36#define INIT_CMD_RUNLVL 1
37#define INIT_CMD_POWERFAIL 2
38#define INIT_CMD_POWERFAILNOW 3
39#define INIT_CMD_POWEROK 4
40#define INIT_CMD_BSD 5
41#define INIT_CMD_SETENV 6
42#define INIT_CMD_UNSETENV 7
43
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44#ifdef MAXHOSTNAMELEN
45# define INITRQ_HLEN MAXHOSTNAMELEN
46#else
47# define INITRQ_HLEN 64
48#endif
49
50/*
51 * This is what BSD 4.4 uses when talking to init.
52 * Linux doesn't use this right now.
53 */
54struct init_request_bsd {
55 char gen_id[8]; /* Beats me.. telnetd uses "fe" */
56 char tty_id[16]; /* Tty name minus /dev/tty */
57 char host[INITRQ_HLEN]; /* Hostname */
58 char term_type[16]; /* Terminal type */
59 int signal; /* Signal to send */
60 int pid; /* Process to send to */
61 char exec_name[128]; /* Program to execute */
62 char reserved[128]; /* For future expansion. */
63};
64
65
66/*
67 * Because of legacy interfaces, "runlevel" and "sleeptime"
68 * aren't in a seperate struct in the union.
69 *
70 * The weird sizes are because init expects the whole
71 * struct to be 384 bytes.
72 */
73struct init_request {
74 int magic; /* Magic number */
75 int cmd; /* What kind of request */
76 int runlevel; /* Runlevel to change to */
77 int sleeptime; /* Time between TERM and KILL */
78 union {
79 struct init_request_bsd bsd;
80 char data[368];
81 } i;
82};
83
84#endif