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Updated shutdown to check if time has lapsed when we did not

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notice. For example if the computer was in sleep mode pending
a shutdown. The shutdown command now notices time has past
and adjusts its countdown clock to compensate. Accurate
to the nearest minute.
Closes Savannah bug #36279
This commit is contained in:
Jesse Smith 2018-04-04 23:12:25 -03:00
parent d9b6475d85
commit a4508479f5
2 changed files with 29 additions and 3 deletions
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6
doc/Changelog
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@ -6,6 +6,12 @@ sysvinit (2.90) UNRELEASED; urgency=low
comparison so the latter is wrote_utmp_rlevel.
* Simplified logic in mountpoint.c when testing for same device or same inode.
Thanks to David Binderman for pointing out the above three issues.
* When we run shutdown and then the computer is put to sleep, the
shutdown command recognizes time has passed and continues its
countdown taking the time lapse into consideration. This prevents
longer waits if we slept past the time we should have shutdown.
Accurate to the nearest minute.
Closes Savannah bug #36279.
sysvinit (2.89) world; urgency=low

26
src/shutdown.c
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@ -59,7 +59,7 @@
#include "init.h"
char *Version = "@(#) shutdown 2.86-1 31-Jul-2004 miquels@cistron.nl";
char *Version = "@(#) shutdown 2.90-1 31-Jul-2004 miquels@cistron.nl";
#define MESSAGELEN 256
@ -483,7 +483,7 @@ int main(int argc, char **argv)
struct tm *lt;
struct stat st;
struct utmp *ut;
time_t t;
time_t t, target_time;
char *halttype;
char *downusers[32];
char buf[128];
@ -758,6 +758,17 @@ int main(int argc, char **argv)
/* Shutdown NOW if time == 0 */
if (wt == 0) issue_shutdown(halttype);
/* Rather than loop and reduce wt (wait time) once per minute,
we shall check the current time against the target time.
Then calculate the remaining wating time based on the difference
between current time and target time.
This avoids missing shutdown time (target time) after the
computer has been asleep. -- Jesse
*/
/* target time, in seconds = current time + wait time */
time(&t);
target_time = t + (60 * wt);
/* Give warnings on regular intervals and finally shutdown. */
if (wt < 15 && !needwarning(wt)) issue_warn(wt);
while(wt) {
@ -767,7 +778,16 @@ int main(int argc, char **argv)
}
if (needwarning(wt)) issue_warn(wt);
hardsleep(60);
wt--;
time(&t); /* get current time once per minute */
if (t >= target_time) /* past the target */
wt = 0;
else if ( (target_time - t) <= 60 ) /* less 1 min remains */
{
hardsleep(target_time - t);
wt = 0;
}
else /* more thsn 1 min remains */
wt = (int) (target_time - t) / 60;
}
issue_shutdown(halttype);