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-rw-r--r--system.c855
1 files changed, 0 insertions, 855 deletions
diff --git a/system.c b/system.c
deleted file mode 100644
index fe49ca7..0000000
--- a/system.c
+++ /dev/null
@@ -1,855 +0,0 @@
-/* $Id: system.c,v 1.33 2004/01/16 05:04:53 reinelt Exp $
- *
- * system status retreivement
- *
- * Copyright 1999, 2000 Michael Reinelt <reinelt@eunet.at>
- *
- * This file is part of LCD4Linux.
- *
- * LCD4Linux 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.
- *
- * LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * $Log: system.c,v $
- * Revision 1.33 2004/01/16 05:04:53 reinelt
- * started plugin proc_stat which should parse /proc/stat
- * which again is a paint in the a**
- * thinking over implementation methods of delta functions
- * (CPU load, ...)
- *
- * Revision 1.32 2004/01/09 04:16:06 reinelt
- * added 'section' argument to cfg_get(), but NULLed it on all calls by now.
- *
- * Revision 1.31 2003/12/01 07:08:51 reinelt
- *
- * Patches from Xavier:
- * - WiFi: make interface configurable
- * - "quiet" as an option from the config file
- * - ignore missing "MemShared" on Linux 2.6
- *
- * Revision 1.30 2003/10/05 17:58:50 reinelt
- * libtool junk; copyright messages cleaned up
- *
- * Revision 1.29 2003/08/24 05:17:58 reinelt
- * liblcd4linux patch from Patrick Schemitz
- *
- * Revision 1.28 2003/06/26 05:31:16 reinelt
- * bug in /proc/net/dev parsing fixed
- *
- * Revision 1.27 2003/06/13 05:11:10 reinelt
- * error message cosmetics
- *
- * Revision 1.26 2003/02/22 07:53:10 reinelt
- * cfg_get(key,defval)
- *
- * Revision 1.25 2002/12/05 19:12:47 reinelt
- * sensors factor and offset patch from Petri Damsten <petri.damsten@raketti.net>
- *
- * Revision 1.24 2001/08/05 17:13:29 reinelt
- *
- * cleaned up inlude of sys/time.h and time.h
- *
- * Revision 1.23 2001/03/13 08:34:15 reinelt
- *
- * corrected a off-by-one bug with sensors
- *
- * Revision 1.22 2001/03/12 12:39:36 reinelt
- *
- * reworked autoconf a lot: drivers may be excluded, #define's went to config.h
- *
- * Revision 1.21 2001/03/09 12:14:24 reinelt
- *
- * minor cleanups
- *
- * Revision 1.20 2001/03/02 20:18:12 reinelt
- *
- * allow compile on systems without net/if_ppp.h
- *
- * Revision 1.19 2001/02/16 08:23:09 reinelt
- *
- * new token 'ic' (ISDN connected) by Carsten Nau <info@cnau.de>
- *
- * Revision 1.18 2000/11/17 10:36:23 reinelt
- *
- * fixed parsing of /proc/net/dev for 2.0 kernels
- *
- * Revision 1.17 2000/10/08 09:16:40 reinelt
- *
- *
- * Linux-2.4.0-test9 changed the layout of /proc/stat (especially the disk_io line)
- * rearranged parsing of some /proc files and (hopefully) made it more robust in concerns of format changes
- *
- * Revision 1.16 2000/08/10 09:44:09 reinelt
- *
- * new debugging scheme: error(), info(), debug()
- * uses syslog if in daemon mode
- *
- * Revision 1.15 2000/08/09 11:03:07 reinelt
- *
- * fixed a bug in system.c where the format of /proc/net/dev was not correctly
- * detected and parsed with different kernels
- *
- * Revision 1.14 2000/08/09 09:50:29 reinelt
- *
- * opened 0.98 development
- * removed driver-specific signal-handlers
- * added 'quit'-function to driver structure
- * added global signal-handler
- *
- * Revision 1.13 2000/07/31 10:43:44 reinelt
- *
- * some changes to support kernel-2.4 (different layout of various files in /proc)
- *
- * Revision 1.12 2000/05/21 06:20:35 reinelt
- *
- * added ppp throughput
- * token is '%t[iomt]' at the moment, but this will change in the near future
- *
- * Revision 1.11 2000/04/15 11:56:35 reinelt
- *
- * more debug messages
- *
- * Revision 1.10 2000/04/13 06:09:52 reinelt
- *
- * added BogoMips() to system.c (not used by now, maybe sometimes we can
- * calibrate our delay loop with this value)
- *
- * added delay loop to HD44780 driver. It seems to be quite fast now. Hopefully
- * no compiler will optimize away the delay loop!
- *
- * Revision 1.9 2000/03/28 07:22:15 reinelt
- *
- * version 0.95 released
- * X11 driver up and running
- * minor bugs fixed
- *
- * Revision 1.8 2000/03/23 07:24:48 reinelt
- *
- * PPM driver up and running (but slow!)
- *
- * Revision 1.7 2000/03/18 08:07:04 reinelt
- *
- * vertical bars implemented
- * bar compaction improved
- * memory information implemented
- *
- * Revision 1.6 2000/03/17 09:21:42 reinelt
- *
- * various memory statistics added
- *
- * Revision 1.5 2000/03/10 17:36:02 reinelt
- *
- * first unstable but running release
- *
- * Revision 1.4 2000/03/10 10:49:53 reinelt
- *
- * MatrixOrbital driver finished
- *
- * Revision 1.3 2000/03/07 11:01:34 reinelt
- *
- * system.c cleanup
- *
- * Revision 1.2 2000/03/06 06:04:06 reinelt
- *
- * minor cleanups
- *
- *
- */
-
-/*
- * exported functions:
- *
- * char *System (void);
- * returns OS name ('Linux')
- *
- * char *Release (void);
- * returns OS release ('2.0.38')
- *
- * char *Processor (void);
- * returns processor type ('i686')
- *
- * double BogoMips (void);
- * returns BogoMips from /proc/cpuinfo
- *
- * int Memory (void);
- * returns main memory (Megabytes)
- *
- * int Ram (int *total, int *free, int *shared, int *buffer, int *cached)
- * sets various usage of ram
- * retuns 0 if ok, -1 on error
- *
- * int Load (double *load1, double *load2, double *load3)
- * sets load average during thwe last 1, 5 and 15 minutes
- * retuns 0 if ok, -1 on error
- *
- * int Busy (double *user, double *nice, double *system, double *idle)
- * sets percentage of CPU time spent in user processes, nice'd processes
- * system calls and idle state
- * returns 0 if ok, -1 on error
- *
- * int Disk (int *r, int *w);
- * sets number of blocks read and written from/to all disks
- * returns 0 if ok, -1 on error
- *
- * int Net (int *rx, int *tx, int *bytes);
- * sets number of packets or bytes received and transmitted
- * *bytes ist set to 0 if rx/tx are packets
- * *bytes ist set to 1 if rx/tx are bytes
- * returns 0 if ok, -1 on error
- *
- * int PPP (int unit, int *rx, int *tx);
- * sets number of packets received and transmitted
- * returns 0 if ok, -1 on error
- *
- * int Sensor (int index, double *val, double *min, double *max)
- * sets the current value of the index'th sensor and
- * the minimum and maximum values from the config file
- * returns 0 if ok, -1 on error
- *
- */
-
-#include "config.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include <time.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/utsname.h>
-#include <sys/param.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-
-#ifdef HAVE_NET_IF_PPP_H
-#include <net/if_ppp.h>
-#else
-#warning if_ppp.h not found. PPP support deactivated.
-#endif
-
-#include "debug.h"
-#include "cfg.h"
-#include "system.h"
-#include "filter.h"
-
-
-static int parse_meminfo (char *tag, char *buffer)
-{
- char *p;
- unsigned long val;
-
- p=strstr(buffer, tag);
- if (p==NULL) {
- error ("parse(/proc/meminfo) failed: no '%s' line", tag);
- return -1;
- }
- if (sscanf(p+strlen(tag), "%lu", &val)!=1) {
- error ("parse(/proc/meminfo) failed: unknown '%s' format", tag);
- return -1;
- }
- return val;
-}
-
-
-char *System(void)
-{
- static char buffer[32]="";
- struct utsname ubuf;
-
- if (*buffer=='\0') {
- if (uname(&ubuf)==-1) {
- error ("uname() failed: %s", strerror(errno));
- strcpy (buffer, "unknown");
- } else {
- debug ("uname(sysname)=%s", ubuf.sysname);
- strncpy (buffer, ubuf.sysname, sizeof(buffer));
- }
- }
- return buffer;
-}
-
-
-char *Release(void)
-{
- static char buffer[32]="";
- struct utsname ubuf;
-
- if (*buffer=='\0') {
- if (uname(&ubuf)==-1) {
- error ("uname() failed: %s", strerror(errno));
- strcpy (buffer, "unknown");
- } else {
- debug ("uname(release)=%s", ubuf.release);
- strncpy (buffer, ubuf.release, sizeof(buffer));
- }
- }
- return buffer;
-}
-
-
-char *Processor(void)
-{
- static char buffer[16]="";
- struct utsname ubuf;
-
- if (*buffer=='\0') {
- if (uname(&ubuf)==-1) {
- error ("uname() failed: %s", strerror(errno));
- strcpy (buffer, "unknown");
- } else {
- debug ("uname(machine)=%s", ubuf.machine);
- strncpy (buffer, ubuf.machine, sizeof(buffer));
- }
- }
- return buffer;
-}
-
-
-double BogoMips (void)
-{
- static double val=-2;
- char buffer[4096];
-
- if (val==-1) return -1;
-
- if (val==-2) {
- char *p;
- int fd=open("/proc/cpuinfo", O_RDONLY);
- if (fd==-1) {
- error ("open(/proc/cpuinfo) failed: %s", strerror(errno));
- val=-1;
- return -1;
- }
- debug ("open(proc/cpuinfo)=%d", fd);
- if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
- error ("read(/proc/cpuinfo) failed: %s", strerror(errno));
- close (fd);
- val=-1;
- return -1;
- }
- close (fd);
- p=strstr(buffer, "bogomips");
- if (p==NULL) {
- error ("parse(/proc/cpuinfo) failed: no 'bogomips' line");
- val=-1;
- return -1;
- }
- if (sscanf(p+8, " : %lf", &val)!=1) {
- error ("parse(/proc/cpuinfo) failed: unknown 'bogomips' format");
- val=-1;
- return -1;
- }
- debug ("BogoMips=%f", val);
- }
- return val;
-}
-
-
-int Memory(void)
-{
- static int value=-1;
- struct stat buf;
-
- if (value==-1) {
- if (stat("/proc/kcore", &buf)==-1) {
- error ("stat(/proc/kcore) failed: %s", strerror(errno));
- value=0;
- } else {
- debug ("sizeof(/proc/kcore)=%ld bytes", buf.st_size);
- value=buf.st_size>>20;
- }
- }
- return value;
-}
-
-int Ram (int *total, int *free, int *shared, int *buffered, int *cached)
-{
- static time_t now=0;
- static int fd=-2;
- static int v1=0;
- static int v2=0;
- static int v3=0;
- static int v4=0;
- static int v5=0;
- char buffer[4096];
-
- *total=v1;
- *free=v2;
- *shared=v3;
- *buffered=v4;
- *cached=v5;
-
- if (fd==-1) return -1;
-
- if (time(NULL)==now) return 0;
- time(&now);
-
- if (fd==-2) {
- fd = open("/proc/meminfo", O_RDONLY | O_NDELAY);
- if (fd==-1) {
- error ("open(/proc/meminfo) failed: %s", strerror(errno));
- return -1;
- }
- debug ("open(/proc/meminfo)=%d", fd);
- }
-
- if (lseek(fd, 0L, SEEK_SET)!=0) {
- error ("lseek(/proc/meminfo) failed: %s", strerror(errno));
- fd=-1;
- return -1;
- }
- if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
- error ("read(/proc/meminfo) failed: %s", strerror(errno));
- fd=-1;
- return -1;
- }
-
- if ((v1=parse_meminfo ("MemTotal:", buffer))<0) {
- fd=-1;
- return -1;
- }
- if ((v2=parse_meminfo ("MemFree:", buffer))<0) {
- fd=-1;
- return -1;
- }
- if ((v3=parse_meminfo ("MemShared:", buffer))<0) {
- // The "MemShared" entriy disappeared in Kernel 2.6...
-#if 0
- fd=-1;
- return -1;
-#else
- v3=0;
-#endif
- }
- if ((v4=parse_meminfo ("Buffers:", buffer))<0) {
- fd=-1;
- return -1;
- }
- if ((v5=parse_meminfo ("Cached:", buffer))<0) {
- fd=-1;
- return -1;
- }
-
- *total=v1;
- *free=v2;
- *shared=v3;
- *buffered=v4;
- *cached=v5;
-
- return 0;
-
-}
-
-
-int Load (double *load1, double *load2, double *load3)
-{
- static int fd=-2;
- char buffer[16];
- static double val1=0;
- static double val2=0;
- static double val3=0;
- static time_t now=0;
-
- *load1=val1;
- *load2=val2;
- *load3=val3;
-
- if (fd==-1) return -1;
-
- if (time(NULL)==now) return 0;
- time(&now);
-
- if (fd==-2) {
- fd=open("/proc/loadavg", O_RDONLY);
- if (fd==-1) {
- error ("open(/proc/loadavg) failed: %s", strerror(errno));
- return -1;
- }
- debug ("open(/proc/loadavg)=%d", fd);
- }
-
- if (lseek(fd, 0L, SEEK_SET)!=0) {
- error("lseek(/proc/loadavg) failed: %s", strerror(errno));
- fd=-1;
- return -1;
- }
-
- if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
- error("read(/proc/loadavg) failed: %s", strerror(errno));
- fd=-1;
- return -1;
- }
-
- if (sscanf(buffer, "%lf %lf %lf", &val1, &val2, &val3)!=3) {
- error ("parse(/proc/loadavg) failed: unknown format");
- fd=-1;
- return -1;
- }
-
- *load1=val1;
- *load2=val2;
- *load3=val3;
-
- return 0;
-}
-
-
-int Busy (double *user, double *nice, double *system, double *idle)
-{
- static int fd=-2;
- char buffer[64], *p;
- unsigned long v1, v2, v3, v4;
- double d1, d2, d3, d4, d5;
-
- *user=0.0;
- *nice=0.0;
- *system=0.0;
- *idle=0.0;
-
- if (fd==-1) return -1;
-
- if (fd==-2) {
- fd=open("/proc/stat", O_RDONLY);
- if (fd==-1) {
- error ("open(proc/stat) failed: %s", strerror(errno));
- return -1;
- }
- debug ("open (/proc/stat)=%d", fd);
- }
-
- if (lseek(fd, 0L, SEEK_SET)!=0) {
- error ("lseek(/proc/stat) failed: %s", strerror(errno));
- fd=-1;
- return -1;
- }
-
- if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
- error ("read(/proc/stat) failed: %s", strerror(errno));
- fd=-1;
- return -1;
- }
-
- p=strstr(buffer, "cpu ");
- if (p==NULL) {
- error ("parse(/proc/stat) failed: no 'cpu' line");
- fd=-1;
- return -1;
- }
-
- if (sscanf(p+4, " %lu %lu %lu %lu", &v1, &v2, &v3, &v4)!=4) {
- error ("parse(/proc/stat) failed: unknown 'cpu' format");
- fd=-1;
- return -1;
- }
-
- d1=smooth("cpu_user", 500, v1);
- d2=smooth("cpu_nice", 500, v2);
- d3=smooth("cpu_sys", 500, v3);
- d4=smooth("cpu_idle", 500, v4);
- d5=d1+d2+d3+d4;
-
- if (d5!=0.0) {
- *user=(d1+d2)/d5;
- *nice=d2/d5;
- *system=d3/d5;
- *idle=d4/d5;
- }
- return 0;
-}
-
-
-int Disk (int *r, int *w)
-{
- char buffer[4096], *p;
- static int fd=-2;
-
- *r=0;
- *w=0;
-
- if (fd==-1) return -1;
-
- if (fd==-2) {
- fd = open("/proc/stat", O_RDONLY | O_NDELAY);
- if (fd==-1) {
- error ("open(/proc/stat) failed: %s", strerror(errno));
- return -1;
- }
- debug ("open (/proc/stat)=%d", fd);
- }
-
- if (lseek(fd, 0L, SEEK_SET)!=0) {
- error ("lseek(/proc/stat) failed: %s", strerror(errno));
- fd=-1;
- return -1;
- }
- if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
- error ("read(/proc/stat) failed: %s", strerror(errno));
- fd=-1;
- return -1;
- }
-
- p=strstr(buffer, "disk_io:");
- if (p!=NULL) {
- unsigned long rsum=0, wsum=0;
- p+=8; while (*p==' ') p++;
- while (*p && *p!='\n') {
- int i, n;
- unsigned long dummy;
- unsigned long rblk, wblk;
- i=sscanf(p, "(%lu,%lu):(%lu,%lu,%lu,%lu,%lu)%n",
- &dummy, &dummy, &dummy, &dummy, &rblk, &dummy, &wblk, &n);
- if (n==0 || i!= 7) {
- i=sscanf(p, "(%lu,%lu):(%lu,%lu,%lu,%lu)%n",
- &dummy, &dummy, &dummy, &rblk, &dummy, &wblk, &n)+1;
- }
- if (n>0 && i==7) {
- rsum+=rblk;
- wsum+=wblk;
- p+=n; while (*p==' ') p++;
- } else {
- error ("parse(/proc/stat) failed: unknown 'disk_io' format");
- fd=-1;
- return -1;
- }
- }
- // assume that we got the number of sectors, and a sector size of 512 bytes.
- // to get te number in kilobytes/sec, we calculate as follows:
- // kb=blocks*512/1024, which is blocks/2
- *r=smooth ("disk_r", 500, rsum/2);
- *w=smooth ("disk_w", 500, wsum/2);
-
- } else {
-
- unsigned long r1, r2, r3, r4;
- unsigned long w1, w2, w3, w4;
- p=strstr(buffer, "disk_rblk");
- if (p==NULL) {
- error ("parse(/proc/stat) failed: neither 'disk_io' nor 'disk_rblk' found");
- fd=-1;
- return -1;
- }
- if (sscanf(p+9, "%lu %lu %lu %lu", &r1, &r2, &r3, &r4)!=4) {
- error ("parse(/proc/stat) failed: unknown 'disk_rblk' format");
- fd=-1;
- return -1;
- }
- p=strstr(buffer, "disk_wblk");
- if (p==NULL) {
- error ("parse(/proc/stat) failed: no 'disk_wblk' line");
- fd=-1;
- return -1;
- }
- if (sscanf(p+9, "%lu %lu %lu %lu", &w1, &w2, &w3, &w4)!=4) {
- error ("parse(/proc/stat) failed: unknown 'disk_wblk' format");
- fd=-1;
- return -1;
- }
- *r=smooth ("disk_r", 500, r1+r2+r3+r4);
- *w=smooth ("disk_w", 500, w1+w2+w3+w4);
- }
-
- return 0;
-}
-
-
-int Net (int *rx, int *tx, int *bytes)
-{
- char buffer[4096], *p, *s;
- static int fd=-2;
- unsigned long pkg_rx, pkg_tx;
-
- *rx=0;
- *tx=0;
- *bytes=0;
-
- if (fd==-1) return -1;
-
- if (fd==-2) {
- fd = open("/proc/net/dev", O_RDONLY | O_NDELAY);
- if (fd==-1) {
- error ("open(/proc/net/dev) failed: %s", strerror(errno));
- return -1;
- }
- debug ("open (/proc/net/dev)=%d", fd);
- }
-
- if (lseek(fd, 0L, SEEK_SET)!=0) {
- error ("lseek(/proc/net/dev) failed: %s", strerror(errno));
- fd=-1;
- return -1;
- }
-
- if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
- error ("read(/proc/net/dev) failed: %s", strerror(errno));
- fd=-1;
- return -1;
- }
-
- pkg_rx=0;
- pkg_tx=0;
- p=buffer;
- while ((s=strsep(&p, "\n"))) {
- int n, u;
- unsigned long v[16]={0};
- n=sscanf (s, " eth%d:%lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu",
- &u, &v[0], &v[1], &v[2], &v[3], &v[4], &v[5], &v[6], &v[7],
- &v[8], &v[9], &v[10], &v[11], &v[12], &v[13], &v[14], &v[15]);
-
- if (n==17) {
- pkg_rx+=v[0];
- pkg_tx+=v[8];
- *bytes=1;
- } else if (n==12) {
- pkg_rx+=v[0];
- pkg_tx+=v[5];
- *bytes=0;
- } else if (n>0) {
- error ("parse(/proc/net/dev) failed: unknown format");
- fd=-1;
- return -1;
- }
- }
-
- *rx=smooth("net_rx", 500, pkg_rx);
- *tx=smooth("net_tx", 500, pkg_tx);
-
- return 0;
-}
-
-
-int PPP (int unit, int *rx, int *tx)
-{
- static int fd=-2;
- char buffer[16];
-
-#ifdef HAVE_NET_IF_PPP_H
- struct ifpppstatsreq req;
-#endif
-
- *rx=0;
- *tx=0;
-
-#ifdef HAVE_NET_IF_PPP_H
-
- if (fd==-1) return -1;
-
- if (fd==-2) {
- fd = socket(AF_INET, SOCK_DGRAM, 0);
- if (fd==-1) {
- error ("socket() failed: %s", strerror(errno));
- return -1;
- }
- debug ("socket()=%d", fd);
- }
-
- memset (&req, 0, sizeof (req));
- req.stats_ptr = (caddr_t) &req.stats;
- snprintf (req.ifr__name, sizeof(req.ifr__name), "ppp%d", unit);
-
- if (ioctl(fd, SIOCGPPPSTATS, &req) < 0)
- return 0;
-
- snprintf (buffer, sizeof(buffer), "ppp%d_rx", unit);
- *rx=smooth(buffer, 500, req.stats.p.ppp_ibytes);
- snprintf (buffer, sizeof(buffer), "ppp%d_tx", unit);
- *tx=smooth(buffer, 500, req.stats.p.ppp_obytes);
-
-#endif
-
- return 0;
-}
-
-
-int Sensor (int index, double *val, double *min, double *max)
-{
- char buffer[32];
- double dummy, value;
- static int fd[SENSORS+1]={[0 ... SENSORS]=-2,};
- static char *sensor[SENSORS+1]={NULL,};
- static double val_buf[SENSORS+1]={0.0,};
- static double min_buf[SENSORS+1]={0.0,};
- static double max_buf[SENSORS+1]={0.0,};
- static double factor_buf[SENSORS+1]={0.0,};
- static double offset_buf[SENSORS+1]={0.0,};
- static time_t now[SENSORS+1]={0,};
-
- if (index<0 || index>SENSORS) return -1;
-
- *val=val_buf[index];
- *min=min_buf[index];
- *max=max_buf[index];
-
- if (fd[index]==-1) return -1;
-
- if (time(NULL)==now[index]) return 0;
- time(&now[index]);
-
- if (fd[index]==-2) {
- snprintf(buffer, 32, "Sensor%d", index);
- sensor[index]=cfg_get(NULL, buffer, NULL);
- if (sensor[index]==NULL || *sensor[index]=='\0') {
- error ("no entry for '%s' in %s", buffer, cfg_source());
- fd[index]=-1;
- return -1;
- }
-
- snprintf(buffer, 32, "Sensor%d_min", index);
- min_buf[index]=atof(cfg_get(NULL, buffer, "0"));
- *min=min_buf[index];
-
- snprintf(buffer, 32, "Sensor%d_max", index);
- max_buf[index]=atof(cfg_get(NULL, buffer, "100"));
- *max=max_buf[index];
-
- snprintf(buffer, 32, "Sensor%d_factor", index);
- factor_buf[index]=atof(cfg_get(NULL, buffer, "1"));
-
- snprintf(buffer, 32, "Sensor%d_offset", index);
- offset_buf[index]=atof(cfg_get(NULL, buffer, "0"));
-
- fd[index]=open(sensor[index], O_RDONLY);
- if (fd[index]==-1) {
- error ("open(%s) failed: %s", sensor[index], strerror(errno));
- return -1;
- }
- debug ("open (%s)=%d", sensor[index], fd[index]);
- }
-
- if (lseek(fd[index], 0L, SEEK_SET)!=0) {
- error ("lseek(%s) failed: %s", sensor[index], strerror(errno));
- fd[index]=-1;
- return -1;
- }
-
- if (read (fd[index], &buffer, sizeof(buffer)-1)==-1) {
- error ("read(%s) failed: %s", sensor[index], strerror(errno));
- fd[index]=-1;
- return -1;
- }
-
- if (sscanf(buffer, "%lf %lf %lf", &dummy, &dummy, &value)!=3) {
- error ("parse(%s) failed: unknown format", sensor[index]);
- fd[index]=-1;
- return -1;
- }
- value *= factor_buf[index];
- value += offset_buf[index];
- val_buf[index]=value;
- *val=value;
- return 0;
-}