kgess-mirror/freebsd-src
1
0
Fork 0
mirror of https://git.freebsd.org/src.git synced 2026-01-16 23:02:24 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

shutdown(8): refuse to run if /var/run/noshutdown is present

Browse source 
Reviewed by:	bapt, kevans, olce
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D50166
This commit is contained in:
Konstantin Belousov 2025-05-04 16:39:32 +03:00
parent 5ab906195b
commit 7fb88c20ec
2 changed files with 36 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
sbin/shutdown/shutdown.8
View file

@ -36,7 +36,7 @@
.Nm
.Op Fl
.Oo
.Fl c | Fl h | Fl p |
.Fl c | Fl f | Fl h | Fl p |
.Fl r | Fl k
.Oc
.Oo
@ -71,6 +71,12 @@ At the present time, only systems with BMC supported by the
driver that implement this functionality support this flag.
The amount of time the system is off is dependent on the device
that implements this feature.
.It Fl f
The
.Nm
command ignores the presence of the
.Pa /var/run/noshutdown
file.
.It Fl h
The system is halted at the specified
.Ar time .
@ -206,6 +212,12 @@ file that
.Nm
created will be removed automatically.
.Pp
If the
.Pa /var/run/noshutdown
file is present,
.Nm
exits without executing any action on the system.
.Pp
When run without options, the
.Nm
utility will place the system into single user mode at the
@ -219,11 +231,18 @@ is equivalent to running:
shutdown -p now
.Ed
.Sh FILES
.Bl -tag -width /var/run/nologin -compact
.Bl -tag -width /var/run/noshutdown -compact
.It Pa /var/run/nologin
tells
.Xr login 1
not to let anyone log in
.It Pa /var/run/noshutdown
prevents
.Nm
from initiating an action on the system.
Can be overridden with the
.Fl f
option.
.El
.Sh EXAMPLES
Reboot the system in 30 minutes and display a warning message on the terminals

18
sbin/shutdown/shutdown.c
View file

@ -32,6 +32,7 @@
#include <sys/param.h>
#include <sys/boottrace.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/syslog.h>
#include <sys/time.h>
@ -79,7 +80,8 @@ static struct interval {
#undef S
static time_t offset, shuttime;
static int docycle, dohalt, dopower, doreboot, killflg, mbuflen, oflag;
static int docycle, dohalt, dopower, doreboot, ign_noshutdown,
killflg, mbuflen, oflag;
static char mbuf[BUFSIZ];
static const char *nosync, *whom;
@ -100,6 +102,7 @@ main(int argc, char **argv)
{
char *p, *endp;
struct passwd *pw;
struct stat st;
int arglen, ch, len, readstdin;
bool dowarn;
@ -133,7 +136,7 @@ main(int argc, char **argv)
goto poweroff;
}
while ((ch = getopt(argc, argv, "-chknopqr")) != -1)
while ((ch = getopt(argc, argv, "-cfhknopqr")) != -1)
switch (ch) {
case '-':
readstdin = 1;
@ -141,6 +144,9 @@ main(int argc, char **argv)
case 'c':
docycle = 1;
break;
case 'f':
ign_noshutdown = 1;
break;
case 'h':
dohalt = 1;
break;
@ -216,6 +222,12 @@ poweroff:
}
mbuflen = strlen(mbuf);
if (!ign_noshutdown && stat(_PATH_NOSHUTDOWN, &st) == 0) {
(void)printf("Shutdown cannot be done, " _PATH_NOSHUTDOWN
" is present\n");
exit(2);
}
if (offset) {
BOOTTRACE("Shutdown at %s", ctime(&shuttime));
(void)printf("Shutdown at %.24s.\n", ctime(&shuttime));
@ -593,7 +605,7 @@ usage(const char *cp)
if (cp != NULL)
warnx("%s", cp);
(void)fprintf(stderr,
"usage: shutdown [-] [-c | -h | -p | -r | -k] [-o [-n]] [-q] time [warning-message ...]\n"
"usage: shutdown [-] [-c | -f | -h | -p | -r | -k] [-o [-n]] [-q] time [warning-message ...]\n"
" poweroff\n");
exit(1);
}