6760585add
fasthalt has behaved like reboot, instead of like halt, since r228408 (2011, 10.0-RELEASE). Fix it. One wonders if anyone will notice. Approved by: re (kib) MFC after: 3 days Sponsored by: Dell EMC Isilon
285 lines
7.0 KiB
C
285 lines
7.0 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1980, 1986, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1980, 1986, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)reboot.c 8.1 (Berkeley) 6/5/93";
|
|
#endif /* not lint */
|
|
#endif
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/reboot.h>
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <sys/sysctl.h>
|
|
#include <signal.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <pwd.h>
|
|
#include <syslog.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <utmpx.h>
|
|
|
|
static void usage(void);
|
|
static u_int get_pageins(void);
|
|
|
|
static int dohalt;
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
struct utmpx utx;
|
|
const struct passwd *pw;
|
|
int ch, howto, i, fd, lflag, nflag, qflag, sverrno, Nflag;
|
|
u_int pageins;
|
|
const char *user, *kernel = NULL;
|
|
|
|
if (strstr(getprogname(), "halt") != NULL) {
|
|
dohalt = 1;
|
|
howto = RB_HALT;
|
|
} else
|
|
howto = 0;
|
|
lflag = nflag = qflag = Nflag = 0;
|
|
while ((ch = getopt(argc, argv, "cdk:lNnpqr")) != -1)
|
|
switch(ch) {
|
|
case 'c':
|
|
howto |= RB_POWERCYCLE;
|
|
break;
|
|
case 'd':
|
|
howto |= RB_DUMP;
|
|
break;
|
|
case 'k':
|
|
kernel = optarg;
|
|
break;
|
|
case 'l':
|
|
lflag = 1;
|
|
break;
|
|
case 'n':
|
|
nflag = 1;
|
|
howto |= RB_NOSYNC;
|
|
break;
|
|
case 'N':
|
|
nflag = 1;
|
|
Nflag = 1;
|
|
break;
|
|
case 'p':
|
|
howto |= RB_POWEROFF;
|
|
break;
|
|
case 'q':
|
|
qflag = 1;
|
|
break;
|
|
case 'r':
|
|
howto |= RB_REROOT;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc != 0)
|
|
usage();
|
|
|
|
if ((howto & (RB_DUMP | RB_HALT)) == (RB_DUMP | RB_HALT))
|
|
errx(1, "cannot dump (-d) when halting; must reboot instead");
|
|
if (Nflag && (howto & RB_NOSYNC) != 0)
|
|
errx(1, "-N cannot be used with -n");
|
|
if ((howto & RB_POWEROFF) && (howto & RB_POWERCYCLE))
|
|
errx(1, "-c and -p cannot be used together");
|
|
if ((howto & RB_REROOT) != 0 && howto != RB_REROOT)
|
|
errx(1, "-r cannot be used with -c, -d, -n, or -p");
|
|
if (geteuid()) {
|
|
errno = EPERM;
|
|
err(1, NULL);
|
|
}
|
|
|
|
if (qflag) {
|
|
reboot(howto);
|
|
err(1, NULL);
|
|
}
|
|
|
|
if (kernel != NULL) {
|
|
fd = open("/boot/nextboot.conf", O_WRONLY | O_CREAT | O_TRUNC,
|
|
0444);
|
|
if (fd > -1) {
|
|
(void)write(fd, "nextboot_enable=\"YES\"\n", 22);
|
|
(void)write(fd, "kernel=\"", 8L);
|
|
(void)write(fd, kernel, strlen(kernel));
|
|
(void)write(fd, "\"\n", 2);
|
|
close(fd);
|
|
}
|
|
}
|
|
|
|
/* Log the reboot. */
|
|
if (!lflag) {
|
|
if ((user = getlogin()) == NULL)
|
|
user = (pw = getpwuid(getuid())) ?
|
|
pw->pw_name : "???";
|
|
if (dohalt) {
|
|
openlog("halt", 0, LOG_AUTH | LOG_CONS);
|
|
syslog(LOG_CRIT, "halted by %s", user);
|
|
} else if (howto & RB_REROOT) {
|
|
openlog("reroot", 0, LOG_AUTH | LOG_CONS);
|
|
syslog(LOG_CRIT, "rerooted by %s", user);
|
|
} else if (howto & RB_POWEROFF) {
|
|
openlog("reboot", 0, LOG_AUTH | LOG_CONS);
|
|
syslog(LOG_CRIT, "powered off by %s", user);
|
|
} else if (howto & RB_POWERCYCLE) {
|
|
openlog("reboot", 0, LOG_AUTH | LOG_CONS);
|
|
syslog(LOG_CRIT, "power cycled by %s", user);
|
|
} else {
|
|
openlog("reboot", 0, LOG_AUTH | LOG_CONS);
|
|
syslog(LOG_CRIT, "rebooted by %s", user);
|
|
}
|
|
}
|
|
utx.ut_type = SHUTDOWN_TIME;
|
|
gettimeofday(&utx.ut_tv, NULL);
|
|
pututxline(&utx);
|
|
|
|
/*
|
|
* Do a sync early on, so disks start transfers while we're off
|
|
* killing processes. Don't worry about writes done before the
|
|
* processes die, the reboot system call syncs the disks.
|
|
*/
|
|
if (!nflag)
|
|
sync();
|
|
|
|
/*
|
|
* Ignore signals that we can get as a result of killing
|
|
* parents, group leaders, etc.
|
|
*/
|
|
(void)signal(SIGHUP, SIG_IGN);
|
|
(void)signal(SIGINT, SIG_IGN);
|
|
(void)signal(SIGQUIT, SIG_IGN);
|
|
(void)signal(SIGTERM, SIG_IGN);
|
|
(void)signal(SIGTSTP, SIG_IGN);
|
|
|
|
/*
|
|
* If we're running in a pipeline, we don't want to die
|
|
* after killing whatever we're writing to.
|
|
*/
|
|
(void)signal(SIGPIPE, SIG_IGN);
|
|
|
|
/*
|
|
* Only init(8) can perform rerooting.
|
|
*/
|
|
if (howto & RB_REROOT) {
|
|
if (kill(1, SIGEMT) == -1)
|
|
err(1, "SIGEMT init");
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Just stop init -- if we fail, we'll restart it. */
|
|
if (kill(1, SIGTSTP) == -1)
|
|
err(1, "SIGTSTP init");
|
|
|
|
/* Send a SIGTERM first, a chance to save the buffers. */
|
|
if (kill(-1, SIGTERM) == -1 && errno != ESRCH)
|
|
err(1, "SIGTERM processes");
|
|
|
|
/*
|
|
* After the processes receive the signal, start the rest of the
|
|
* buffers on their way. Wait 5 seconds between the SIGTERM and
|
|
* the SIGKILL to give everybody a chance. If there is a lot of
|
|
* paging activity then wait longer, up to a maximum of approx
|
|
* 60 seconds.
|
|
*/
|
|
sleep(2);
|
|
for (i = 0; i < 20; i++) {
|
|
pageins = get_pageins();
|
|
if (!nflag)
|
|
sync();
|
|
sleep(3);
|
|
if (get_pageins() == pageins)
|
|
break;
|
|
}
|
|
|
|
for (i = 1;; ++i) {
|
|
if (kill(-1, SIGKILL) == -1) {
|
|
if (errno == ESRCH)
|
|
break;
|
|
goto restart;
|
|
}
|
|
if (i > 5) {
|
|
(void)fprintf(stderr,
|
|
"WARNING: some process(es) wouldn't die\n");
|
|
break;
|
|
}
|
|
(void)sleep(2 * i);
|
|
}
|
|
|
|
reboot(howto);
|
|
/* FALLTHROUGH */
|
|
|
|
restart:
|
|
sverrno = errno;
|
|
errx(1, "%s%s", kill(1, SIGHUP) == -1 ? "(can't restart init): " : "",
|
|
strerror(sverrno));
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
(void)fprintf(stderr, dohalt ?
|
|
"usage: halt [-clNnpq] [-k kernel]\n" :
|
|
"usage: reboot [-cdlNnpqr] [-k kernel]\n");
|
|
exit(1);
|
|
}
|
|
|
|
static u_int
|
|
get_pageins(void)
|
|
{
|
|
u_int pageins;
|
|
size_t len;
|
|
|
|
len = sizeof(pageins);
|
|
if (sysctlbyname("vm.stats.vm.v_swappgsin", &pageins, &len, NULL, 0)
|
|
!= 0) {
|
|
warnx("v_swappgsin");
|
|
return (0);
|
|
}
|
|
return pageins;
|
|
}
|