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telemetry.c
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telemetry.c
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/* telemetry.c -- common server telemetry
*
* Copyright (c) 1994-2008 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $Id: telemetry.c,v 1.12 2010/06/28 12:03:12 brong Exp $
*/
#include <config.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/resource.h>
#include <fcntl.h>
#include <string.h>
#include <syslog.h>
#include "prot.h"
#include "global.h"
/* create telemetry log; return fd of log */
int telemetry_log(const char *userid, struct protstream *pin,
struct protstream *pout, int usetimestamp)
{
char buf[1024];
int fd = -1;
time_t now;
if(usetimestamp) {
struct timeval tv;
gettimeofday(&tv, NULL);
/* use sec.clocks */
snprintf(buf, sizeof(buf), "%s%s%s/%lu.%lu",
config_dir, FNAME_LOGDIR, userid,
(unsigned long)tv.tv_sec, (unsigned long)tv.tv_usec);
} else {
/* use pid */
snprintf(buf, sizeof(buf), "%s%s%s/%lu",
config_dir, FNAME_LOGDIR, userid, (unsigned long)
getpid());
}
fd = open(buf, O_CREAT | O_APPEND | O_WRONLY, 0644);
if (fd != -1) {
now = time(NULL);
snprintf(buf, sizeof(buf), "---------- %s %s\n",
userid, ctime(&now));
write(fd, buf, strlen(buf));
prot_setlog(pin, fd);
prot_setlog(pout, fd);
}
return fd;
}
void telemetry_rusage(char *userid)
{
static struct rusage previous;
struct rusage current;
struct timeval sys, user;
if (userid && *userid) {
if (getrusage(RUSAGE_SELF, ¤t) != 0) {
syslog(LOG_ERR, "getrusage: %s", userid);
return;
}
user.tv_sec = current.ru_utime.tv_sec - previous.ru_utime.tv_sec;
user.tv_usec = current.ru_utime.tv_usec - previous.ru_utime.tv_usec;
if (user.tv_usec < 0) {
user.tv_sec--;
user.tv_usec += 1000000;
}
sys.tv_sec = current.ru_stime.tv_sec - previous.ru_stime.tv_sec;
sys.tv_usec = current.ru_stime.tv_usec - previous.ru_stime.tv_usec;
if (sys.tv_usec < 0) {
sys.tv_sec--;
sys.tv_usec += 1000000;
}
/*
* Some systems provide significantly more data, but POSIX
* guarantees user & sys CPU time.
*/
syslog(LOG_NOTICE, "USAGE %s user: %lu.%.6d sys: %lu.%.6d", userid,
(unsigned long)user.tv_sec, (int)user.tv_usec,
(unsigned long)sys.tv_sec, (int)sys.tv_usec);
previous = current;
}
return;
}