sysv: implement /dev/initctl compatibility

[elogind.git] / initreq.h

diff --git a/initreq.h b/initreq.h
new file mode 100644 (file)
index 0000000..6f6547b
--- /dev/null
+++ b/initreq.h
@@ -0,0 +1,77 @@
+/*
+ * initreq.h   Interface to talk to init through /dev/initctl.
+ *
+ *             Copyright (C) 1995-2004 Miquel van Smoorenburg
+ *
+ *             This library is free software; you can redistribute it and/or
+ *             modify it under the terms of the GNU Lesser General Public
+ *             License as published by the Free Software Foundation; either
+ *             version 2 of the License, or (at your option) any later version.
+ *
+ * Version:     @(#)initreq.h  1.28  31-Mar-2004 MvS
+ *
+ */
+#ifndef _INITREQ_H
+#define _INITREQ_H
+
+#include <sys/param.h>
+
+#if defined(__FreeBSD_kernel__)
+#  define INIT_FIFO  "/etc/.initctl"
+#else
+#  define INIT_FIFO  "/dev/initctl"
+#endif
+
+#define INIT_MAGIC 0x03091969
+#define INIT_CMD_START         0
+#define INIT_CMD_RUNLVL                1
+#define INIT_CMD_POWERFAIL     2
+#define INIT_CMD_POWERFAILNOW  3
+#define INIT_CMD_POWEROK       4
+#define INIT_CMD_BSD           5
+#define INIT_CMD_SETENV                6
+#define INIT_CMD_UNSETENV      7
+
+#define INIT_CMD_CHANGECONS    12345
+
+#ifdef MAXHOSTNAMELEN
+#  define INITRQ_HLEN  MAXHOSTNAMELEN
+#else
+#  define INITRQ_HLEN  64
+#endif
+
+/*
+ *     This is what BSD 4.4 uses when talking to init.
+ *     Linux doesn't use this right now.
+ */
+struct init_request_bsd {
+       char    gen_id[8];              /* Beats me.. telnetd uses "fe" */
+       char    tty_id[16];             /* Tty name minus /dev/tty      */
+       char    host[INITRQ_HLEN];      /* Hostname                     */
+       char    term_type[16];          /* Terminal type                */
+       int     signal;                 /* Signal to send               */
+       int     pid;                    /* Process to send to           */
+       char    exec_name[128];         /* Program to execute           */
+       char    reserved[128];          /* For future expansion.        */
+};
+
+
+/*
+ *     Because of legacy interfaces, "runlevel" and "sleeptime"
+ *     aren't in a seperate struct in the union.
+ *
+ *     The weird sizes are because init expects the whole
+ *     struct to be 384 bytes.
+ */
+struct init_request {
+       int     magic;                  /* Magic number                 */
+       int     cmd;                    /* What kind of request         */
+       int     runlevel;               /* Runlevel to change to        */
+       int     sleeptime;              /* Time between TERM and KILL   */
+       union {
+               struct init_request_bsd bsd;
+               char                    data[368];
+       } i;
+};
+
+#endif