sbin/shutdown: Support time units as in 'shutdown -r +5sec'

Units supported: s, sec, m, min, h, hour.

Differential Revision:	https://reviews.freebsd.org/D1272
This commit is contained in:
Gleb Kurtsou 2014-12-16 08:29:02 +00:00
parent 09eced2549
commit c7d73a4d23
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=275818
2 changed files with 32 additions and 3 deletions

View file

@ -28,7 +28,7 @@
.\" @(#)shutdown.8 8.2 (Berkeley) 4/27/95
.\" $FreeBSD$
.\"
.Dd March 19, 2013
.Dd December 15, 2014
.Dt SHUTDOWN 8
.Os
.Sh NAME
@ -118,6 +118,15 @@ to the current system values.
The first form brings the system down in
.Ar number
minutes and the second at the absolute time specified.
.Ar +number
may be specified in units other than minutes by appending the corresponding
suffix:
.Dq Li s ,
.Dq Li sec ,
.Dq Li m ,
.Dq Li min .
.Dq Li h ,
.Dq Li hour .
.It Ar warning-message
Any other arguments comprise the warning message that is broadcast
to users currently logged into the system.

View file

@ -48,6 +48,7 @@ __FBSDID("$FreeBSD$");
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <pwd.h>
@ -322,7 +323,8 @@ timewarn(int timeleft)
(void)fprintf(pf, "System going down in %d minute%s\n\n",
timeleft / 60, (timeleft > 60) ? "s" : "");
else if (timeleft)
(void)fprintf(pf, "System going down in 30 seconds\n\n");
(void)fprintf(pf, "System going down in %s30 seconds\n\n",
(offset > 0 && offset < 30 ? "less than " : ""));
else
(void)fprintf(pf, "System going down IMMEDIATELY\n\n");
@ -415,6 +417,7 @@ getoffset(char *timearg)
char *p;
time_t now;
int this_year;
char *timeunit;
(void)time(&now);
@ -427,8 +430,25 @@ getoffset(char *timearg)
if (*timearg == '+') { /* +minutes */
if (!isdigit(*++timearg))
badtime();
if ((offset = atoi(timearg) * 60) < 0)
errno = 0;
offset = strtol(timearg, &timeunit, 10);
if (offset < 0 || offset == LONG_MAX || errno != 0)
badtime();
if (timeunit[0] == '\0' || strcasecmp(timeunit, "m") == 0 ||
strcasecmp(timeunit, "min") == 0 ||
strcasecmp(timeunit, "mins") == 0) {
offset *= 60;
} else if (strcasecmp(timeunit, "h") == 0 ||
strcasecmp(timeunit, "hour") == 0 ||
strcasecmp(timeunit, "hours") == 0) {
offset *= 60 * 60;
} else if (strcasecmp(timeunit, "s") == 0 ||
strcasecmp(timeunit, "sec") == 0 ||
strcasecmp(timeunit, "secs") == 0) {
offset *= 1;
} else {
badtime();
}
shuttime = now + offset;
return;
}