Date: Thu, 9 Sep 1999 10:11:03 -0500 From: Dan Nelson <dnelson@emsphone.com> To: Jason Welsh <jawelsh@cisco.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: proc and uptime on freebsd Message-ID: <19990909101103.A56366@dan.emsphone.com> In-Reply-To: <37D7B8F6.1FA8EC1A@cisco.com> References: <37D7B8F6.1FA8EC1A@cisco.com>
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In the last episode (Sep 09), Jason Welsh said:
> im trying to help someone port an uptime daemon to Freebsd (since I
> cant find any).. and hes asking about where to find system uptime in
> /proc i know in linux, its easy, its just /proc/uptime but /proc
> seems to be a totally different animal on freebsd. is there a file
> that keeps uptime in /proc??
An uptime daemon? you mean rwhod?
Rwhod calculates uptime by subtracting getboottime() from the current
time. See /usr/src/usr.sbin/rwhod/rwhod.c for the real code.
time_t getboottime(void)
{
int mib[2];
size_t size;
struct timeval tm;
mib[0] = CTL_KERN;
mib[1] = KERN_BOOTTIME;
size = sizeof(tm);
if (sysctl(mib, 2, &tm, &size, NULL, 0) == -1) {
syslog(LOG_ERR, "cannot get boottime: %m");
exit(1);
}
return tm.tv_sec;
}
--
Dan Nelson
dnelson@emsphone.com
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