The function get_uptime is in snmplib/system.c
Its usage is in apps/snmptrap.c and agent/mibgroup/host/hr_system.c ....
and thanks for considering the mail
Regards
Suma
PS : the code:
/*
* Returns uptime in centiseconds(!).
*/
long
get_uptime(void)
{
#if !defined(solaris2) && !defined(linux) && !defined(cygwin)
struct timeval now;
long boottime_csecs, nowtime_csecs;
boottime_csecs = get_boottime();
if (boottime_csecs == 0)
return 0;
gettimeofday(&now, (struct timezone *) 0);
nowtime_csecs = (now.tv_sec * 100) + (now.tv_usec / 10000);
return (nowtime_csecs - boottime_csecs);
#endif
#ifdef solaris2
kstat_ctl_t *ksc = kstat_open();
kstat_t *ks;
kid_t kid;
kstat_named_t *named;
u_long lbolt = 0;
if (ksc) {
ks = kstat_lookup(ksc, "unix", -1, "system_misc");
if (ks) {
kid = kstat_read(ksc, ks, NULL);
if (kid != -1) {
named = kstat_data_lookup(ks, "lbolt");
if (named) {
#ifdef KSTAT_DATA_UINT32
lbolt = named->value.ui32;
#else
lbolt = named->value.ul;
#endif
}
}
}
kstat_close(ksc);
}
return lbolt;
#endif /* solaris2 */
#ifdef linux
FILE *in = fopen("/proc/uptime", "r");
long uptim = 0, a, b;
if (in) {
if (2 == fscanf(in, "%ld.%ld", &a, &b))
uptim = a * 100 + b;
fclose(in);
}
return uptim;
#endif /* linux */
#ifdef cygwin
return (0); /* not implemented */
#endif
}
On 1/18/06, Dave Shield <[EMAIL PROTECTED]> wrote:
> On Mon, 2006-01-16 at 15:01 +0530, Suma C wrote:
> > Can we use the /proc/uptime or even better the library function :
> > get_uptime .....
>
> A library function like that would certainly be an idea.
> But the big question is how portable it would be.
> Remember that the Net-SNMP suite runs on a wide variety
> of systems, not just Linux. So we prefer to use general
> solutions in preference to system-specific ones wherever
> possible.
>
> And checking my (fairly bog-standard) Fedora 4 system,
> I can't immediately spot any mention of this routine.
> There isn't a man page for "get_uptime", and it doesn't
> appear in any of the header files.
> This is not a good sign.
>
> Can you point me in the direction of some documentation?
>
> Dave
>
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