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#include <sys/reboot.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <utmp.h>
extern char *__progname;
typedef enum {NOOP, HALT, REBOOT, POWEROFF} action_type;
#ifndef OUR_WTMP
#define OUR_WTMP "/var/log/wtmp"
#endif
#ifndef OUR_UTMP
#define OUR_UTMP "/run/utmp"
#endif
void write_wtmp(int boot) {
int fd;
if ((fd = open(OUR_WTMP, O_WRONLY|O_APPEND)) < 0)
return;
struct utmp utmp = {0};
struct utsname uname_buf;
struct timeval tv;
gettimeofday(&tv, 0);
utmp.ut_tv.tv_sec = tv.tv_sec;
utmp.ut_tv.tv_usec = tv.tv_usec;
utmp.ut_type = boot ? BOOT_TIME : RUN_LVL;
strncpy(utmp.ut_name, boot ? "reboot" : "shutdown", sizeof utmp.ut_name);
strncpy(utmp.ut_id , "~~", sizeof utmp.ut_id);
strncpy(utmp.ut_line, boot ? "~" : "~~", sizeof utmp.ut_line);
if (uname(&uname_buf) == 0)
strncpy(utmp.ut_host, uname_buf.release, sizeof utmp.ut_host);
write(fd, (char *)&utmp, sizeof utmp);
close(fd);
if (boot) {
if ((fd = open(OUR_UTMP, O_WRONLY|O_APPEND)) < 0)
return;
write(fd, (char *)&utmp, sizeof utmp);
close(fd);
}
}
int main(int argc, char *argv[]) {
int do_sync = 1;
int do_force = 0;
int do_wtmp = 1;
int opt;
action_type action = NOOP;
if (strcmp(__progname, "halt") == 0)
action = HALT;
else if (strcmp(__progname, "reboot") == 0)
action = REBOOT;
else if (strcmp(__progname, "poweroff") == 0)
action = POWEROFF;
else
warnx("no default behavior, needs to be called as halt/reboot/poweroff.");
while ((opt = getopt(argc, argv, "dfhinwB")) != -1)
switch (opt) {
case 'n':
do_sync = 0;
break;
case 'w':
action = NOOP;
do_sync = 0;
break;
case 'd':
do_wtmp = 0;
break;
case 'h':
case 'i':
/* silently ignored. */
break;
case 'f':
do_force = 1;
break;
case 'B':
write_wtmp(1);
return 0;
default:
errx(1, "Usage: %s [-n] [-f] [-d] [-w] [-B]", __progname);
}
if (do_wtmp)
write_wtmp(0);
if (do_sync)
sync();
switch (action) {
case HALT:
if (do_force)
reboot(RB_HALT_SYSTEM);
else
execl("/bin/runit-init", "init", "0", (char*)0);
err(1, "halt failed");
break;
case POWEROFF:
if (do_force)
reboot(RB_POWER_OFF);
else
execl("/bin/runit-init", "init", "0", (char*)0);
err(1, "poweroff failed");
break;
case REBOOT:
if (do_force)
reboot(RB_AUTOBOOT);
else
execl("/bin/runit-init", "init", "6", (char*)0);
err(1, "reboot failed");
break;
case NOOP:
break;
}
return 0;
}
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