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/* vi: set sw=4 ts=4: */
/*
* Poweroff reboot and halt, oh my.
*
* Copyright 2006 by Rob Landley <rob@landley.net>
*
* Licensed under GPL version 2, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
#include <sys/reboot.h>
#if ENABLE_FEATURE_WTMP
#include <sys/utsname.h>
#include <utmp.h>
#endif
int halt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int halt_main(int argc UNUSED_PARAM, char **argv)
{
static const int magic[] = {
#ifdef RB_HALT_SYSTEM
RB_HALT_SYSTEM,
#elif defined RB_HALT
RB_HALT,
#endif
#ifdef RB_POWER_OFF
RB_POWER_OFF,
#elif defined RB_POWERDOWN
RB_POWERDOWN,
#endif
RB_AUTOBOOT
};
static const smallint signals[] = { SIGUSR1, SIGUSR2, SIGTERM };
int delay = 0;
int which, flags, rc = 1;
#if ENABLE_FEATURE_WTMP
struct utmp utmp;
struct utsname uts;
#endif
/* Figure out which applet we're running */
for (which = 0; "hpr"[which] != *applet_name; which++)
continue;
/* Parse and handle arguments */
opt_complementary = "d+"; /* -d N */
flags = getopt32(argv, "d:nfw", &delay);
sleep(delay);
#if ENABLE_FEATURE_WTMP
if (access(bb_path_wtmp_file, R_OK|W_OK) == -1) {
close(creat(bb_path_wtmp_file, 0664));
}
memset(&utmp, 0, sizeof(utmp));
utmp.ut_tv.tv_sec = time(NULL);
safe_strncpy(utmp.ut_user, "shutdown", UT_NAMESIZE);
utmp.ut_type = RUN_LVL;
safe_strncpy(utmp.ut_id, "~~", sizeof(utmp.ut_id));
safe_strncpy(utmp.ut_line, "~~", UT_LINESIZE);
if (uname(&uts) == 0)
safe_strncpy(utmp.ut_host, uts.release, sizeof(utmp.ut_host));
updwtmp(bb_path_wtmp_file, &utmp);
#endif /* !ENABLE_FEATURE_WTMP */
if (flags & 8) /* -w */
return 0;
if (!(flags & 2)) /* no -n */
sync();
/* Perform action. */
if (ENABLE_INIT && !(flags & 4)) {
if (ENABLE_FEATURE_INITRD) {
pid_t *pidlist = find_pid_by_name("linuxrc");
if (pidlist[0] > 0)
rc = kill(pidlist[0], signals[which]);
if (ENABLE_FEATURE_CLEAN_UP)
free(pidlist);
}
if (rc)
rc = kill(1, signals[which]);
} else
rc = reboot(magic[which]);
if (rc)
bb_error_msg("no");
return rc;
}
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