Make it possible to specify the initctl path as a compile time define INIT_FIFO.
[sysvinit.git] / src / initreq.h
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 #ifndef INIT_FIFO
29 # if defined(__FreeBSD_kernel__)
30 # define INIT_FIFO "/etc/.initctl"
31 # else
32 # define INIT_FIFO "/dev/initctl"
33 # endif
34 #endif
35
36 #define INIT_MAGIC 0x03091969
37 #define INIT_CMD_START 0
38 #define INIT_CMD_RUNLVL 1
39 #define INIT_CMD_POWERFAIL 2
40 #define INIT_CMD_POWERFAILNOW 3
41 #define INIT_CMD_POWEROK 4
42 #define INIT_CMD_BSD 5
43 #define INIT_CMD_SETENV 6
44 #define INIT_CMD_UNSETENV 7
45
46 #ifdef MAXHOSTNAMELEN
47 # define INITRQ_HLEN MAXHOSTNAMELEN
48 #else
49 # define INITRQ_HLEN 64
50 #endif
51
52 /*
53 * This is what BSD 4.4 uses when talking to init.
54 * Linux doesn't use this right now.
55 */
56 struct init_request_bsd {
57 char gen_id[8]; /* Beats me.. telnetd uses "fe" */
58 char tty_id[16]; /* Tty name minus /dev/tty */
59 char host[INITRQ_HLEN]; /* Hostname */
60 char term_type[16]; /* Terminal type */
61 int signal; /* Signal to send */
62 int pid; /* Process to send to */
63 char exec_name[128]; /* Program to execute */
64 char reserved[128]; /* For future expansion. */
65 };
66
67
68 /*
69 * Because of legacy interfaces, "runlevel" and "sleeptime"
70 * aren't in a seperate struct in the union.
71 *
72 * The weird sizes are because init expects the whole
73 * struct to be 384 bytes.
74 */
75 struct init_request {
76 int magic; /* Magic number */
77 int cmd; /* What kind of request */
78 int runlevel; /* Runlevel to change to */
79 int sleeptime; /* Time between TERM and KILL */
80 union {
81 struct init_request_bsd bsd;
82 char data[368];
83 } i;
84 };
85
86 #endif