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#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include <unistd.h>
#include "runit.h"
#include "strerr.h"
#include "sig.h"
#include "open.h"
#include "error.h"
#define USAGE " 0|6"
#define FATAL "init: fatal: "
/* #define WARNING "init: warning: " */
const char *progname;
void usage(void) { strerr_die4x(1, "usage: ", progname, USAGE, "\n"); }
void runit_halt () {
if (open_trunc(STOPIT) == -1)
strerr_die4sys(111, FATAL, "unable to create ", STOPIT, ": ");
if (chmod(STOPIT, 0100) == -1)
strerr_die4sys(111, FATAL, "unable to chmod ", STOPIT, ": ");
if (chmod(REBOOT, 0) == -1)
if (errno != error_noent)
strerr_die4sys(111, FATAL, "unable to chmod ", REBOOT, ": ");
kill(1, sig_cont);
_exit(0);
}
void runit_reboot () {
if (open_trunc(STOPIT) == -1)
strerr_die4sys(111, FATAL, "unable to create ", STOPIT, ": ");
if (chmod(STOPIT, 0100) == -1)
strerr_die4sys(111, FATAL, "unable to chmod ", STOPIT, ": ");
if (open_trunc(REBOOT) == -1)
strerr_die4sys(111, FATAL, "unable to create ", REBOOT, ": ");
if (chmod(REBOOT, 0100) == -1)
strerr_die4sys(111, FATAL, "unable to chmod ", REBOOT, ": ");
kill(1, sig_cont);
_exit(0);
}
int main (int argc, const char * const *argv, char * const *envp) {
const char *prog[2];
progname =*argv++;
if (getpid() == 1) {
prog[1] =0;
prog[0] ="runit";
/* kernel is starting init, runit does the job. */
execve(RUNIT, (char *const *)prog, envp);
/* serious error */
strerr_die4sys(111, FATAL, "unable to start ", prog[0], ": ");
}
if (! *argv || ! **argv) usage();
switch (**argv) {
case '0':
runit_halt();
break;
case '6':
runit_reboot();
break;
case '-':
if ((*argv)[1] == 'V')
strerr_warn1("$Id$\n", 0);
default:
usage();
}
/* not reached */
_exit(0);
}
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