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photosyst.c
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photosyst.c
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/*
** ATOP - System & Process Monitor
**
** The program 'atop' offers the possibility to view the activity of
** the system on system-level as well as process-level.
**
** This source-file contains functions to read all relevant system-level
** figures.
** ==========================================================================
** Author: Gerlof Langeveld
** E-mail: [email protected]
** Date: November 1996
** LINUX-port: June 2000
** --------------------------------------------------------------------------
** Copyright (C) 2000-2010 Gerlof Langeveld
**
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 2, or (at your option) any
** later version.
**
** This program is distributed in the hope that it will be useful, but
** WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
** See the GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
** --------------------------------------------------------------------------
**
** $Log: photosyst.c,v $
** Revision 1.37 2010/11/14 06:42:18 gerlof
** After opening /proc/cpuinfo, the file descriptor was not closed any more.
**
** Revision 1.36 2010/10/23 14:09:50 gerlof
** Add support for mmcblk disks (MMC/SD cardreaders)
** Credits: Anssi Hannula
**
** Revision 1.35 2010/05/18 19:20:30 gerlof
** Introduce CPU frequency and scaling (JC van Winkel).
**
** Revision 1.34 2010/04/23 12:19:35 gerlof
** Modified mail-address in header.
**
** Revision 1.33 2010/03/04 10:58:05 gerlof
** Added recognition of device-type /dev/fio...
**
** Revision 1.32 2010/03/04 10:52:47 gerlof
** Support I/O-statistics on logical volumes and MD devices.
**
** Revision 1.31 2009/12/17 11:59:16 gerlof
** Gather and display new counters: dirty cache and guest cpu usage.
**
** Revision 1.30 2008/02/25 13:47:00 gerlof
** Experimental code for HTTP statistics.
**
** Revision 1.29 2007/08/17 09:45:44 gerlof
** Experimental: gather info about HTTP statistics.
**
** Revision 1.28 2007/08/16 12:00:49 gerlof
** Add support for atopsar reporting.
** Gather more counters, mainly related to networking.
**
** Revision 1.27 2007/07/03 09:01:56 gerlof
** Support Apache-statistics.
**
** Revision 1.26 2007/02/13 10:32:28 gerlof
** Removal of external declarations.
**
** Revision 1.25 2007/02/13 09:29:57 gerlof
** Removal of external declarations.
**
** Revision 1.24 2007/01/22 14:57:12 gerlof
** Support of special disks used by virtual machines.
**
** Revision 1.23 2007/01/22 08:28:50 gerlof
** Support steal-time from /proc/stat.
**
** Revision 1.22 2006/11/13 13:48:20 gerlof
** Implement load-average counters, context-switches and interrupts.
**
** Revision 1.21 2006/01/30 09:14:16 gerlof
** Extend memory counters (a.o. page scans).
**
** Revision 1.20 2005/10/21 09:50:08 gerlof
** Per-user accumulation of resource consumption.
**
** Revision 1.19 2004/10/28 08:31:23 gerlof
** New counter: vm committed space
**
** Revision 1.18 2004/09/24 10:02:35 gerlof
** Wrong cpu-numbers for system level statistics.
**
** Revision 1.17 2004/05/07 05:27:37 gerlof
** Recognize new disk-names and support of diskname-modification.
**
** Revision 1.16 2004/05/06 09:53:31 gerlof
** Skip statistics of ram-disks.
**
** Revision 1.15 2004/05/06 09:46:14 gerlof
** Ported to kernel-version 2.6.
**
** Revision 1.14 2003/07/08 13:53:21 gerlof
** Cleanup code.
**
** Revision 1.13 2003/07/07 09:27:06 gerlof
** Cleanup code (-Wall proof).
**
** Revision 1.12 2003/06/30 11:30:37 gerlof
** Enlarge counters to 'long long'.
**
** Revision 1.11 2003/06/24 06:21:40 gerlof
** Limit number of system resource lines.
**
** Revision 1.10 2003/01/17 14:23:05 root
** Change-directory to /proc to optimize opening /proc-files
** via relative path-names i.s.o. absolute path-names.
**
** Revision 1.9 2003/01/14 07:50:26 gerlof
** Consider IPv6 counters on IP and UDP level (add them to the IPv4 counters).
**
** Revision 1.8 2002/07/24 11:13:38 gerlof
** Changed to ease porting to other UNIX-platforms.
**
** Revision 1.7 2002/07/11 09:12:41 root
** Parsing of /proc/meminfo made 2.5 proof.
**
** Revision 1.6 2002/07/10 05:00:21 root
** Counters pin/pout renamed to swin/swout (Linux conventions).
**
** Revision 1.5 2002/07/08 09:31:11 gerlof
** *** empty log message ***
**
** Revision 1.4 2002/07/02 07:36:45 gerlof
** *** empty log message ***
**
** Revision 1.3 2002/07/02 07:08:36 gerlof
** Recognize more disk driver types via regular expressions
**
** Revision 1.2 2002/01/22 13:40:11 gerlof
** Support for number of cpu's.
**
** Revision 1.1 2001/10/02 10:43:31 gerlof
** Initial revision
**
*/
static const char rcsid[] = "$Id: photosyst.c,v 1.37 2010/11/14 06:42:18 gerlof Exp $";
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <regex.h>
#include <sys/stat.h>
#include <sys/times.h>
#include <sys/wait.h>
#include <time.h>
#include <signal.h>
#include <string.h>
#include <dirent.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include "atop.h"
#include "photosyst.h"
#define MAXCNT 64
/* return value of isdisk() */
#define NONTYPE 0
#define DSKTYPE 1
#define MDDTYPE 2
#define LVMTYPE 3
static int isdisk(unsigned int, unsigned int,
char *, struct perdsk *, int);
static struct ipv6_stats ipv6_tmp;
static struct icmpv6_stats icmpv6_tmp;
static struct udpv6_stats udpv6_tmp;
struct v6tab {
char *nam;
count_t *val;
};
static struct v6tab v6tab[] = {
{"Ip6InReceives", &ipv6_tmp.Ip6InReceives, },
{"Ip6InHdrErrors", &ipv6_tmp.Ip6InHdrErrors, },
{"Ip6InTooBigErrors", &ipv6_tmp.Ip6InTooBigErrors, },
{"Ip6InNoRoutes", &ipv6_tmp.Ip6InNoRoutes, },
{"Ip6InAddrErrors", &ipv6_tmp.Ip6InAddrErrors, },
{"Ip6InUnknownProtos", &ipv6_tmp.Ip6InUnknownProtos, },
{"Ip6InTruncatedPkts", &ipv6_tmp.Ip6InTruncatedPkts, },
{"Ip6InDiscards", &ipv6_tmp.Ip6InDiscards, },
{"Ip6InDelivers", &ipv6_tmp.Ip6InDelivers, },
{"Ip6OutForwDatagrams", &ipv6_tmp.Ip6OutForwDatagrams, },
{"Ip6OutRequests", &ipv6_tmp.Ip6OutRequests, },
{"Ip6OutDiscards", &ipv6_tmp.Ip6OutDiscards, },
{"Ip6OutNoRoutes", &ipv6_tmp.Ip6OutNoRoutes, },
{"Ip6ReasmTimeout", &ipv6_tmp.Ip6ReasmTimeout, },
{"Ip6ReasmReqds", &ipv6_tmp.Ip6ReasmReqds, },
{"Ip6ReasmOKs", &ipv6_tmp.Ip6ReasmOKs, },
{"Ip6ReasmFails", &ipv6_tmp.Ip6ReasmFails, },
{"Ip6FragOKs", &ipv6_tmp.Ip6FragOKs, },
{"Ip6FragFails", &ipv6_tmp.Ip6FragFails, },
{"Ip6FragCreates", &ipv6_tmp.Ip6FragCreates, },
{"Ip6InMcastPkts", &ipv6_tmp.Ip6InMcastPkts, },
{"Ip6OutMcastPkts", &ipv6_tmp.Ip6OutMcastPkts, },
{"Icmp6InMsgs", &icmpv6_tmp.Icmp6InMsgs, },
{"Icmp6InErrors", &icmpv6_tmp.Icmp6InErrors, },
{"Icmp6InDestUnreachs", &icmpv6_tmp.Icmp6InDestUnreachs, },
{"Icmp6InPktTooBigs", &icmpv6_tmp.Icmp6InPktTooBigs, },
{"Icmp6InTimeExcds", &icmpv6_tmp.Icmp6InTimeExcds, },
{"Icmp6InParmProblems", &icmpv6_tmp.Icmp6InParmProblems, },
{"Icmp6InEchos", &icmpv6_tmp.Icmp6InEchos, },
{"Icmp6InEchoReplies", &icmpv6_tmp.Icmp6InEchoReplies, },
{"Icmp6InGroupMembQueries", &icmpv6_tmp.Icmp6InGroupMembQueries, },
{"Icmp6InGroupMembResponses",
&icmpv6_tmp.Icmp6InGroupMembResponses, },
{"Icmp6InGroupMembReductions",
&icmpv6_tmp.Icmp6InGroupMembReductions, },
{"Icmp6InRouterSolicits", &icmpv6_tmp.Icmp6InRouterSolicits, },
{"Icmp6InRouterAdvertisements",
&icmpv6_tmp.Icmp6InRouterAdvertisements, },
{"Icmp6InNeighborSolicits", &icmpv6_tmp.Icmp6InNeighborSolicits, },
{"Icmp6InNeighborAdvertisements",
&icmpv6_tmp.Icmp6InNeighborAdvertisements, },
{"Icmp6InRedirects", &icmpv6_tmp.Icmp6InRedirects, },
{"Icmp6OutMsgs", &icmpv6_tmp.Icmp6OutMsgs, },
{"Icmp6OutDestUnreachs", &icmpv6_tmp.Icmp6OutDestUnreachs, },
{"Icmp6OutPktTooBigs", &icmpv6_tmp.Icmp6OutPktTooBigs, },
{"Icmp6OutTimeExcds", &icmpv6_tmp.Icmp6OutTimeExcds, },
{"Icmp6OutParmProblems", &icmpv6_tmp.Icmp6OutParmProblems, },
{"Icmp6OutEchoReplies", &icmpv6_tmp.Icmp6OutEchoReplies, },
{"Icmp6OutRouterSolicits", &icmpv6_tmp.Icmp6OutRouterSolicits, },
{"Icmp6OutNeighborSolicits",&icmpv6_tmp.Icmp6OutNeighborSolicits, },
{"Icmp6OutNeighborAdvertisements",
&icmpv6_tmp.Icmp6OutNeighborAdvertisements, },
{"Icmp6OutRedirects", &icmpv6_tmp.Icmp6OutRedirects, },
{"Icmp6OutGroupMembResponses",
&icmpv6_tmp.Icmp6OutGroupMembResponses, },
{"Icmp6OutGroupMembReductions",
&icmpv6_tmp.Icmp6OutGroupMembReductions, },
{"Udp6InDatagrams", &udpv6_tmp.Udp6InDatagrams, },
{"Udp6NoPorts", &udpv6_tmp.Udp6NoPorts, },
{"Udp6InErrors", &udpv6_tmp.Udp6InErrors, },
{"Udp6OutDatagrams", &udpv6_tmp.Udp6OutDatagrams, },
};
static int v6tab_entries = sizeof(v6tab)/sizeof(struct v6tab);
void
photosyst(struct sstat *si)
{
register int i, nr;
count_t cnts[MAXCNT];
float lavg1, lavg5, lavg15;
FILE *fp;
char linebuf[1024], nam[64], origdir[1024];
static char part_stats = 1; /* per-partition statistics ? */
unsigned int major, minor;
#if HTTPSTATS
static int wwwvalid = 1;
#endif
memset(si, 0, sizeof(struct sstat));
getcwd(origdir, sizeof origdir);
chdir("/proc");
/*
** gather various general statistics from the file /proc/stat and
** store them in binary form
*/
if ( (fp = fopen("stat", "r")) != NULL)
{
while ( fgets(linebuf, sizeof(linebuf), fp) != NULL)
{
nr = sscanf(linebuf,
"%s %lld %lld %lld %lld %lld %lld %lld "
"%lld %lld %lld %lld %lld %lld %lld %lld ",
nam,
&cnts[0], &cnts[1], &cnts[2], &cnts[3],
&cnts[4], &cnts[5], &cnts[6], &cnts[7],
&cnts[8], &cnts[9], &cnts[10], &cnts[11],
&cnts[12], &cnts[13], &cnts[14]);
if (nr < 2) /* headerline ? --> skip */
continue;
if ( strcmp("cpu", nam) == EQ)
{
si->cpu.all.utime = cnts[0];
si->cpu.all.ntime = cnts[1];
si->cpu.all.stime = cnts[2];
si->cpu.all.itime = cnts[3];
if (nr > 5) /* 2.6 kernel? */
{
si->cpu.all.wtime = cnts[4];
si->cpu.all.Itime = cnts[5];
si->cpu.all.Stime = cnts[6];
if (nr > 8) /* steal support */
si->cpu.all.steal = cnts[7];
if (nr > 9) /* guest support */
si->cpu.all.guest = cnts[8];
}
continue;
}
if ( strncmp("cpu", nam, 3) == EQ)
{
i = atoi(&nam[3]);
si->cpu.cpu[i].cpunr = i;
si->cpu.cpu[i].utime = cnts[0];
si->cpu.cpu[i].ntime = cnts[1];
si->cpu.cpu[i].stime = cnts[2];
si->cpu.cpu[i].itime = cnts[3];
if (nr > 5) /* 2.6 kernel? */
{
si->cpu.cpu[i].wtime = cnts[4];
si->cpu.cpu[i].Itime = cnts[5];
si->cpu.cpu[i].Stime = cnts[6];
if (nr > 8) /* steal support */
si->cpu.cpu[i].steal = cnts[7];
if (nr > 9) /* guest support */
si->cpu.cpu[i].guest = cnts[8];
}
si->cpu.nrcpu++;
continue;
}
if ( strcmp("ctxt", nam) == EQ)
{
si->cpu.csw = cnts[0];
continue;
}
if ( strcmp("intr", nam) == EQ)
{
si->cpu.devint = cnts[0];
continue;
}
if ( strcmp("processes", nam) == EQ)
{
si->cpu.nprocs = cnts[0];
continue;
}
if ( strcmp("swap", nam) == EQ) /* < 2.6 */
{
si->mem.swins = cnts[0];
si->mem.swouts = cnts[1];
continue;
}
}
fclose(fp);
if (si->cpu.nrcpu == 0)
si->cpu.nrcpu = 1;
}
/*
** gather loadaverage values from the file /proc/loadavg and
** store them in binary form
*/
if ( (fp = fopen("loadavg", "r")) != NULL)
{
if ( fgets(linebuf, sizeof(linebuf), fp) != NULL)
{
if ( sscanf(linebuf, "%f %f %f",
&lavg1, &lavg5, &lavg15) == 3)
{
si->cpu.lavg1 = lavg1;
si->cpu.lavg5 = lavg5;
si->cpu.lavg15 = lavg15;
}
}
fclose(fp);
}
/*
** gather frequency scaling info.
** sources (in order of preference):
** /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state
** or
** /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
** /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
**
** store them in binary form
*/
static char fn[80];
int didone=0;
for (i = 0; i < si->cpu.nrcpu; ++i)
{
long long f=0;
sprintf(fn,
"/sys/devices/system/cpu/cpu%d/cpufreq/stats/time_in_state",
i);
if ((fp=fopen(fn, "r")) != 0)
{
long long hits=0;
long long maxfreq=0;
long long cnt=0;
long long sum=0;
while (fscanf(fp, "%lld %lld", &f, &cnt) == 2)
{
f /= 1000;
sum += (f*cnt);
hits += cnt;
if (f > maxfreq)
maxfreq=f;
}
si->cpu.cpu[i].freqcnt.maxfreq = maxfreq;
si->cpu.cpu[i].freqcnt.cnt = sum;
si->cpu.cpu[i].freqcnt.ticks = hits;
fclose(fp);
didone=1;
}
else
{ // governor statistics not available
sprintf(fn,
"/sys/devices/system/cpu/cpu%d/cpufreq/cpuinfo_max_freq",
i);
if ((fp=fopen(fn, "r")) != 0)
{
if (fscanf(fp, "%lld", &f) == 1)
{
// convert KHz to MHz
si->cpu.cpu[i].freqcnt.maxfreq =f/1000;
}
didone=1;
fclose(fp);
}
else
{
si->cpu.cpu[i].freqcnt.maxfreq=0;
}
sprintf(fn,
"/sys/devices/system/cpu/cpu%d/cpufreq/scaling_cur_freq",
i);
if ((fp=fopen(fn, "r")) != 0)
{
if (fscanf(fp, "%lld", &f) == 1)
{
// convert KHz to MHz
si->cpu.cpu[i].freqcnt.cnt = f/1000;
si->cpu.cpu[i].freqcnt.ticks = 0;
}
fclose(fp);
didone=1;
}
else
{
si->cpu.cpu[i].freqcnt.maxfreq = 0;
si->cpu.cpu[i].freqcnt.cnt = 0;
si->cpu.cpu[i].freqcnt.ticks = 0;
break; // use cpuinfo
}
}
} // for all CPUs
if (!didone) // did not get processor freq statistics.
// use /proc/cpuinfo
{
if ( (fp = fopen("cpuinfo", "r")) != NULL)
{
// get information from the lines
// processor\t: 0
// cpu MHz\t\t: 800.000
int cpuno=-1;
while ( fgets(linebuf, sizeof(linebuf), fp) != NULL)
{
if (memcmp(linebuf, "processor", 9)== EQ)
sscanf(linebuf, "%*s %*s %d", &cpuno);
if (memcmp(linebuf, "cpu MHz", 7) == EQ)
{
if (cpuno >= 0 && cpuno < si->cpu.nrcpu)
{
sscanf(linebuf,
"%*s %*s %*s %lld",
&(si->cpu.cpu[cpuno].freqcnt.cnt));
}
}
}
fclose(fp);
}
}
/*
** gather virtual memory statistics from the file /proc/vmstat and
** store them in binary form (>= kernel 2.6)
*/
if ( (fp = fopen("vmstat", "r")) != NULL)
{
int nrfields = 9; /* number of fields to be filled */
while ( fgets(linebuf, sizeof(linebuf), fp) != NULL &&
nrfields > 0)
{
nr = sscanf(linebuf, "%s %lld", nam, &cnts[0]);
if (nr < 2) /* headerline ? --> skip */
continue;
if ( strcmp("pswpin", nam) == EQ)
{
si->mem.swins = cnts[0];
nrfields--;
continue;
}
if ( strcmp("pswpout", nam) == EQ)
{
si->mem.swouts = cnts[0];
nrfields--;
continue;
}
if ( strcmp("allocstall", nam) == EQ)
{
si->mem.allocstall = cnts[0];
nrfields--;
continue;
}
if ( strncmp("pgscan_", nam, 7) == EQ)
{
si->mem.pgscans += cnts[0];
nrfields--;
continue;
}
}
fclose(fp);
}
/*
** gather memory-related statistics from the file /proc/meminfo and
** store them in binary form
**
** in the file /proc/meminfo a 2.4 kernel starts with two lines
** headed by the strings "Mem:" and "Swap:" containing all required
** fields, except proper value for page cache
** if these lines are present we try to skip parsing the rest
** of the lines; if these lines are not present we should get the
** required field from other lines
*/
si->mem.physmem = (count_t)-1;
si->mem.freemem = (count_t)-1;
si->mem.buffermem = (count_t)-1;
si->mem.cachemem = (count_t)-1;
si->mem.slabmem = (count_t) 0;
si->mem.totswap = (count_t)-1;
si->mem.freeswap = (count_t)-1;
si->mem.committed = (count_t) 0;
if ( (fp = fopen("meminfo", "r")) != NULL)
{
int nrfields = 10; /* number of fields to be filled */
while ( fgets(linebuf, sizeof(linebuf), fp) != NULL &&
nrfields > 0)
{
nr = sscanf(linebuf,
"%s %lld %lld %lld %lld %lld %lld %lld "
"%lld %lld %lld\n",
nam,
&cnts[0], &cnts[1], &cnts[2], &cnts[3],
&cnts[4], &cnts[5], &cnts[6], &cnts[7],
&cnts[8], &cnts[9]);
if (nr < 2) /* headerline ? --> skip */
continue;
if ( strcmp("Mem:", nam) == EQ)
{
si->mem.physmem = cnts[0] / pagesize;
si->mem.freemem = cnts[2] / pagesize;
si->mem.buffermem = cnts[4] / pagesize;
nrfields -= 3;
}
else if ( strcmp("Swap:", nam) == EQ)
{
si->mem.totswap = cnts[0] / pagesize;
si->mem.freeswap = cnts[2] / pagesize;
nrfields -= 2;
}
else if (strcmp("Cached:", nam) == EQ)
{
if (si->mem.cachemem == (count_t)-1)
{
si->mem.cachemem =
cnts[0]*1024/pagesize;
nrfields--;
}
}
else if (strcmp("Dirty:", nam) == EQ)
{
si->mem.cachedrt =
cnts[0]*1024/pagesize;
nrfields--;
}
else if (strcmp("MemTotal:", nam) == EQ)
{
if (si->mem.physmem == (count_t)-1)
{
si->mem.physmem =
cnts[0]*1024/pagesize;
nrfields--;
}
}
else if (strcmp("MemFree:", nam) == EQ)
{
if (si->mem.freemem == (count_t)-1)
{
si->mem.freemem =
cnts[0]*1024/pagesize;
nrfields--;
}
}
else if (strcmp("Buffers:", nam) == EQ)
{
if (si->mem.buffermem == (count_t)-1)
{
si->mem.buffermem =
cnts[0]*1024/pagesize;
nrfields--;
}
}
else if (strcmp("SwapTotal:", nam) == EQ)
{
if (si->mem.totswap == (count_t)-1)
{
si->mem.totswap =
cnts[0]*1024/pagesize;
nrfields--;
}
}
else if (strcmp("SwapFree:", nam) == EQ)
{
if (si->mem.freeswap == (count_t)-1)
{
si->mem.freeswap =
cnts[0]*1024/pagesize;
nrfields--;
}
}
else if (strcmp("Slab:", nam) == EQ)
{
si->mem.slabmem = cnts[0]*1024/pagesize;
nrfields--;
}
else if (strcmp("Committed_AS:", nam) == EQ)
{
si->mem.committed = cnts[0]*1024/
pagesize;
nrfields--;
}
else if (strcmp("CommitLimit:", nam) == EQ)
{
si->mem.commitlim = cnts[0]*1024/
pagesize;
nrfields--;
}
}
fclose(fp);
}
/*
** gather network-related statistics
** - interface stats from the file /proc/net/dev
** - IPv4 stats from the file /proc/net/snmp
** - IPv6 stats from the file /proc/net/snmp6
*/
/*
** interface statistics
*/
if ( (fp = fopen("net/dev", "r")) != NULL)
{
char *cp;
i = 0;
while ( fgets(linebuf, sizeof(linebuf), fp) != NULL)
{
if ( (cp = strchr(linebuf, ':')) != NULL)
*cp = ' '; /* substitute ':' by space */
nr = sscanf(linebuf,
"%15s %lld %lld %lld %lld %lld %lld %lld "
"%lld %lld %lld %lld %lld %lld %lld %lld "
"%lld\n",
si->intf.intf[i].name,
&(si->intf.intf[i].rbyte),
&(si->intf.intf[i].rpack),
&(si->intf.intf[i].rerrs),
&(si->intf.intf[i].rdrop),
&(si->intf.intf[i].rfifo),
&(si->intf.intf[i].rframe),
&(si->intf.intf[i].rcompr),
&(si->intf.intf[i].rmultic),
&(si->intf.intf[i].sbyte),
&(si->intf.intf[i].spack),
&(si->intf.intf[i].serrs),
&(si->intf.intf[i].sdrop),
&(si->intf.intf[i].sfifo),
&(si->intf.intf[i].scollis),
&(si->intf.intf[i].scarrier),
&(si->intf.intf[i].scompr));
if (nr == 17) /* skip header & lines without stats */
{
if (++i >= MAXINTF-1)
break;
}
}
si->intf.intf[i].name[0] = '\0'; /* set terminator for table */
si->intf.nrintf = i;
fclose(fp);
}
/*
** IP version 4 statistics
*/
if ( (fp = fopen("net/snmp", "r")) != NULL)
{
while ( fgets(linebuf, sizeof(linebuf), fp) != NULL)
{
nr = sscanf(linebuf,
"%s %lld %lld %lld %lld %lld %lld %lld %lld %lld "
"%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld "
"%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld "
"%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld "
"%lld\n",
nam,
&cnts[0], &cnts[1], &cnts[2], &cnts[3],
&cnts[4], &cnts[5], &cnts[6], &cnts[7],
&cnts[8], &cnts[9], &cnts[10], &cnts[11],
&cnts[12], &cnts[13], &cnts[14], &cnts[15],
&cnts[16], &cnts[17], &cnts[18], &cnts[19],
&cnts[20], &cnts[21], &cnts[22], &cnts[23],
&cnts[24], &cnts[25], &cnts[26], &cnts[27],
&cnts[28], &cnts[29], &cnts[30], &cnts[31],
&cnts[32], &cnts[33], &cnts[34], &cnts[35],
&cnts[36], &cnts[37], &cnts[38], &cnts[39]);
if (nr < 2) /* headerline ? --> skip */
continue;
if ( strcmp("Ip:", nam) == 0)
{
memcpy(&si->net.ipv4, cnts,
sizeof si->net.ipv4);
continue;
}
if ( strcmp("Icmp:", nam) == 0)
{
memcpy(&si->net.icmpv4, cnts,
sizeof si->net.icmpv4);
continue;
}
if ( strcmp("Tcp:", nam) == 0)
{
memcpy(&si->net.tcp, cnts,
sizeof si->net.tcp);
continue;
}
if ( strcmp("Udp:", nam) == 0)
{
memcpy(&si->net.udpv4, cnts,
sizeof si->net.udpv4);
continue;
}
}
fclose(fp);
}
/*
** IP version 6 statistics
*/
memset(&ipv6_tmp, 0, sizeof ipv6_tmp);
memset(&icmpv6_tmp, 0, sizeof icmpv6_tmp);
memset(&udpv6_tmp, 0, sizeof udpv6_tmp);
if ( (fp = fopen("net/snmp6", "r")) != NULL)
{
count_t countval;
int cur = 0;
/*
** one name-value pair per line
*/
while ( fgets(linebuf, sizeof(linebuf), fp) != NULL)
{
nr = sscanf(linebuf, "%s %lld", nam, &countval);
if (nr < 2) /* unexpected line ? --> skip */
continue;
if (strcmp(v6tab[cur].nam, nam) == 0)
{
*(v6tab[cur].val) = countval;
}
else
{
for (cur=0; cur < v6tab_entries; cur++)
if (strcmp(v6tab[cur].nam, nam) == 0)
break;
if (cur < v6tab_entries) /* found ? */
*(v6tab[cur].val) = countval;
}
if (++cur >= v6tab_entries)
cur = 0;
}
memcpy(&si->net.ipv6, &ipv6_tmp, sizeof ipv6_tmp);
memcpy(&si->net.icmpv6, &icmpv6_tmp, sizeof icmpv6_tmp);
memcpy(&si->net.udpv6, &udpv6_tmp, sizeof udpv6_tmp);
fclose(fp);
}
/*
** check if extended partition-statistics are provided < kernel 2.6
*/
if ( part_stats && (fp = fopen("partitions", "r")) != NULL)
{
char diskname[256];
i = 0;
while ( fgets(linebuf, sizeof(linebuf), fp) )
{
nr = sscanf(linebuf,
"%*d %*d %*d %255s %lld %*d %lld %*d "
"%lld %*d %lld %*d %*d %lld %lld",
diskname,
&(si->dsk.dsk[i].nread),
&(si->dsk.dsk[i].nrsect),
&(si->dsk.dsk[i].nwrite),
&(si->dsk.dsk[i].nwsect),
&(si->dsk.dsk[i].io_ms),
&(si->dsk.dsk[i].avque) );
/*
** check if this line concerns the entire disk
** or just one of the partitions of a disk (to be
** skipped)
*/
if (nr == 7) /* full stats-line ? */
{
if ( isdisk(0, 0, diskname,
&(si->dsk.dsk[i]),
MAXDKNAM) != DSKTYPE)
continue;
if (++i >= MAXDSK-1)
break;
}
}
si->dsk.dsk[i].name[0] = '\0'; /* set terminator for table */
si->dsk.ndsk = i;
fclose(fp);
if (i == 0)
part_stats = 0; /* do not try again for next cycles */
}
/*
** check if disk-statistics are provided (kernel 2.6 onwards)
*/
if ( (fp = fopen("diskstats", "r")) != NULL)
{
char diskname[256];
struct perdsk tmpdsk;
si->dsk.ndsk = 0;
si->dsk.nmdd = 0;
si->dsk.nlvm = 0;
while ( fgets(linebuf, sizeof(linebuf), fp) )
{
nr = sscanf(linebuf,
"%d %d %255s %lld %*d %lld %*d "
"%lld %*d %lld %*d %*d %lld %lld",
&major, &minor, diskname,
&tmpdsk.nread, &tmpdsk.nrsect,
&tmpdsk.nwrite, &tmpdsk.nwsect,
&tmpdsk.io_ms, &tmpdsk.avque );
/*
** check if this line concerns the entire disk
** or just one of the partitions of a disk (to be
** skipped)
*/
if (nr == 9) /* full stats-line ? */
{
switch ( isdisk(major, minor, diskname,
&tmpdsk, MAXDKNAM) )
{
case NONTYPE:
continue;
case DSKTYPE:
if (si->dsk.ndsk < MAXDSK-1)
si->dsk.dsk[si->dsk.ndsk++] = tmpdsk;
break;
case MDDTYPE:
if (si->dsk.nmdd < MAXMDD-1)
si->dsk.mdd[si->dsk.nmdd++] = tmpdsk;
break;
case LVMTYPE:
if (si->dsk.nlvm < MAXLVM-1)
si->dsk.lvm[si->dsk.nlvm++] = tmpdsk;
break;
}
}
}
/*
** set terminator for table
*/
si->dsk.dsk[si->dsk.ndsk].name[0] = '\0';
si->dsk.mdd[si->dsk.nmdd].name[0] = '\0';
si->dsk.lvm[si->dsk.nlvm].name[0] = '\0';
fclose(fp);
}
chdir(origdir);
/*
** fetch application-specific counters
*/
#if HTTPSTATS
if ( wwwvalid)
wwwvalid = getwwwstat(80, &(si->www));
#endif
}
/*
** set of subroutines to determine which disks should be monitored
** and to translate name strings into (shorter) name strings
*/
static void
nullmodname(unsigned int major, unsigned int minor,
char *curname, struct perdsk *px, int maxlen)
{
strncpy(px->name, curname, maxlen-1);