[5826] in Athena Bugs
cron-based program for deactivation
daemon@ATHENA.MIT.EDU (John T Kohl)
Fri Aug 24 11:00:26 1990
Date: Fri, 24 Aug 90 11:00:12 -0400
From: John T Kohl <jtkohl@ATHENA.MIT.EDU>
To: bugs@ATHENA.MIT.EDU
This might be useful for machines without toehold.
#include <stdio.h>
#include <utmp.h>
#include <sys/file.h>
static char utmpf[]="/etc/utmp";
char deactivate_prog[] = "/etc/athena/deactivate";
int nobody_logged_in()
{
struct utmp utmp;
int file;
if((file = open(utmpf, O_RDONLY, 0)) >= 0) {
while(read(file, (char *) &utmp, sizeof(utmp)) > 0) {
if(*utmp.ut_name) return 0;
}
}
return 1;
}
main()
{
if (nobody_logged_in()) {
execlp(deactivate_prog, deactivate_prog, 0);
fprintf(stderr, "%s not found\n", deactivate_prog);
exit(1);
} else
exit(0);
}
