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/* ISC license. */
#include <skalibs/nonposix.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <utmpx.h>
#include <sys/reboot.h>
#include <skalibs/strerr2.h>
#include <skalibs/sgetopt.h>
#include <skalibs/sig.h>
#include <skalibs/tai.h>
#include <skalibs/djbunix.h>
#include "defaults.h"
#include "hpr.h"
#ifndef UT_NAMESIZE
#define UT_NAMESIZE 32
#endif
#ifndef UT_HOSTSIZE
#define UT_HOSTSIZE 256
#endif
#ifndef _PATH_WTMP
#define _PATH_WTMP "/dev/null/wtmp"
#endif
#define USAGE "s6-linux-init-hpr [ -h | -p | -r ] [ -n ] [ -d | -w ] [ -W ] [ -f ] [ -i ]"
int main (int argc, char const *const *argv)
{
int what = 0 ;
int force = 0 ;
int dowtmp = 1 ;
int dowall = 1 ;
int dosync = 1 ;
int doconfirm = 0 ;
PROG = "s6-linux-init-hpr" ;
{
subgetopt_t l = SUBGETOPT_ZERO ;
for (;;)
{
int opt = subgetopt_r(argc, argv, "hprfdwWni", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 'h' : what = 1 ; break ;
case 'p' : what = 2 ; break ;
case 'r' : what = 3 ; break ;
case 'f' : force = 1 ; break ;
case 'd' : dowtmp = 0 ; break ;
case 'w' : dowtmp = 2 ; break ;
case 'W' : dowall = 0 ; break ;
case 'n' : dosync = 0 ; break ;
case 'i' : doconfirm = 1 ; break ;
default : strerr_dieusage(100, USAGE) ;
}
}
argc -= l.ind ; argv += l.ind ;
}
if (!what)
strerr_dief1x(100, "one of the -h, -p or -r options must be given") ;
if (geteuid())
{
errno = EPERM ;
strerr_dief1sys(100, "nice try, peon") ;
}
if (doconfirm) hpr_confirm_hostname() ;
if (force)
{
if (dosync) sync() ;
reboot(what == 3 ? RB_AUTOBOOT : what == 2 ? RB_POWER_OFF : RB_HALT_SYSTEM) ;
strerr_diefu1sys(111, "reboot()") ;
}
if (!tain_now_g()) strerr_warnw1sys("get current time") ;
if (dowtmp)
{
struct utmpx utx =
{
.ut_type = RUN_LVL,
.ut_pid = getpid(),
.ut_line = "~",
.ut_id = "",
.ut_session = getsid(0)
} ;
strncpy(utx.ut_user, what == 3 ? "reboot" : "shutdown", UT_NAMESIZE) ;
if (gethostname(utx.ut_host, UT_HOSTSIZE) < 0)
{
utx.ut_host[0] = 0 ;
strerr_warnwu1sys("gethostname") ;
}
else utx.ut_host[UT_HOSTSIZE - 1] = 0 ;
/* glibc multilib can go fuck itself */
#ifdef __WORDSIZE_TIME64_COMPAT32
{
struct timeval tv ;
if (!timeval_from_tain(&tv, &STAMP))
strerr_warnwu1sys("timeval_from_tain") ;
utx.ut_tv.tv_sec = tv.tv_sec ;
utx.ut_tv.tv_usec = tv.tv_usec ;
}
#else
if (!timeval_from_tain(&utx.ut_tv, &STAMP))
strerr_warnwu1sys("timeval_from_tain") ;
#endif
updwtmpx(_PATH_WTMP, &utx) ;
}
if (dowall) hpr_wall(HPR_WALL_BANNER) ;
if (dowtmp < 2)
{
if (!hpr_shutdown(what, &tain_zero, 0))
strerr_diefu1sys(111, "notify s6-linux-init-shutdownd") ;
}
return 0 ;
}
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