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557 lines
17 KiB
C
557 lines
17 KiB
C
/*
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KSysGuard, the KDE System Guard
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Copyright (c) 1999 - 2001 Chris Schlaeger <cs@kde.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of version 2 of the GNU General Public
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License as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <config-workspace.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include "Command.h"
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#include "ksysguardd.h"
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#include "netdev.h"
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#define MON_SIZE 128
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#define CALC( a, b, c, d, e, f ) \
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{ \
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if (f){ \
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if( NetDevs[i].oldInitialised) {\
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if( a >= NetDevs[i].a ) \
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NetDevs[ i ].delta##a = a - NetDevs[ i ].a; \
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else \
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NetDevs[ i ].delta##a = a; \
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} else \
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NetDevs[ i ].delta##a = 0; \
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} \
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NetDevs[ i ].a = a; \
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}
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#define REGISTERSENSOR( a, b, c, d, e, f ) \
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{ \
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snprintf( mon, MON_SIZE, "network/interfaces/%s/%s", tag, b ); \
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registerMonitor( mon, "float", printNetDev##a##0, printNetDev##a##0Info, NetDevSM ); \
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if(f) { \
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snprintf( mon, MON_SIZE, "network/interfaces/%s/%sTotal", tag, b ); \
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registerMonitor( mon, "float", printNetDev##a##1, printNetDev##a##1Info, NetDevSM ); \
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} \
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}
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#define UNREGISTERSENSOR( a, b, c, d, e, f ) \
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{ \
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snprintf( mon, MON_SIZE, "network/interfaces/%s/%s", NetDevs[ i ].name, b ); \
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removeMonitor( mon ); \
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if(f) { \
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snprintf( mon, MON_SIZE, "network/interfaces/%s/%sTotal", NetDevs[ i ].name, b ); \
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removeMonitor( mon ); \
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} \
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}
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#define DEFMEMBERS( a, b, c, d, e, f ) \
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unsigned long long delta##a; \
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unsigned long long a; \
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unsigned long a##Scale;
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#define DEFWIFIMEMBERS( a, b, c, d, e, f ) \
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signed long long delta##a; \
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signed long long a; \
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signed long a##Scale;
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#define DEFVARS( a, b, c, d, e, f) \
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unsigned long long a;
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#define DEFWIFIVARS( a, b, c, d, e, f) \
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signed long long a;
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/* The sixth variable is 1 if the quantity variation must be provided, 0 if the absolute value must be provided */
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#define FORALL( a ) \
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a( recBytes, "receiver/data", "Received Data", "KB", 1024, 1) \
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a( recPacks, "receiver/packets", "Received Packets", "", 1, 1 ) \
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a( recErrs, "receiver/errors", "Receiver Errors", "", 1, 1 ) \
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a( recDrop, "receiver/drops", "Receiver Drops", "", 1, 1 ) \
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a( recFifo, "receiver/fifo", "Receiver FIFO Overruns", "", 1, 1 ) \
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a( recFrame, "receiver/frame", "Receiver Frame Errors", "", 1, 1 ) \
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a( recCompressed, "receiver/compressed", "Received Compressed Packets", "", 1, 1 ) \
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a( recMulticast, "receiver/multicast", "Received Multicast Packets", "", 1, 1 ) \
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a( sentBytes, "transmitter/data", "Sent Data", "KB", 1024, 1 ) \
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a( sentPacks, "transmitter/packets", "Sent Packets", "", 1, 1 ) \
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a( sentErrs, "transmitter/errors", "Transmitter Errors", "", 1, 1 ) \
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a( sentDrop, "transmitter/drops", "Transmitter Drops", "", 1, 1 ) \
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a( sentFifo, "transmitter/fifo", "Transmitter FIFO overruns", "", 1, 1 ) \
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a( sentColls, "transmitter/collisions", "Transmitter Collisions", "", 1, 1 ) \
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a( sentCarrier, "transmitter/carrier", "Transmitter Carrier losses", "", 1, 1 ) \
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a( sentCompressed, "transmitter/compressed", "Transmitter Compressed Packets", "", 1, 1 )
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#define FORALLWIFI( a ) \
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a( linkQuality, "wifi/quality", "Link Quality", "", 1, 0) \
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a( signalLevel, "wifi/signal", "Signal Level", "dBm", 1, 0) \
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a( noiseLevel, "wifi/noise", "Noise Level", "dBm", 1, 0) \
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a( nwid, "wifi/nwid", "Rx Invalid Nwid Packets", "", 1, 1) \
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a( RxCrypt, "wifi/crypt", "Rx Invalid Crypt Packets", "", 1, 1) \
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a( frag, "wifi/frag", "Rx Invalid Frag Packets", "", 1, 1) \
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a( retry, "wifi/retry", "Tx Excessive Retries Packets", "", 1, 1) \
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a( misc, "wifi/misc", "Invalid Misc Packets", "", 1, 1) \
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a( beacon, "wifi/beacon", "Missed Beacon", "", 1, 1)
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#define SETZERO( a, b, c, d, e, f ) \
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a = 0;
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#define SETMEMBERZERO( a, b, c, d, e, f ) \
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NetDevs[ i ].a = 0; \
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NetDevs[ i ].delta##a = 0; \
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NetDevs[ i ].a##Scale = e;
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#define DECLAREFUNC( a, b, c, d, e, f) \
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void printNetDev##a##0( const char* cmd ); \
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void printNetDev##a##0Info( const char* cmd ); \
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void printNetDev##a##1( const char* cmd ); \
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void printNetDev##a##1Info( const char* cmd ); \
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typedef struct
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{
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FORALL( DEFMEMBERS )
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FORALLWIFI( DEFWIFIMEMBERS )
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char name[ 32 ];
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int isWifi;
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int oldInitialised;
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} NetDevInfo;
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/* We have observed deviations of up to 5% in the accuracy of the timer
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* interrupts. So we try to measure the interrupt interval and use this
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* value to calculate timing dependant values. */
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static float timeInterval = 0;
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static struct timeval lastSampling;
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static struct timeval currSampling;
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static struct SensorModul* NetDevSM;
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#define NETDEVBUFSIZE 4096
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static char NetDevBuf[ NETDEVBUFSIZE ];
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static char NetDevWifiBuf[ NETDEVBUFSIZE ];
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static int NetDevCnt = 0;
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static int Dirty = 0;
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static long OldHash = 0;
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#define MAXNETDEVS 64
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static NetDevInfo NetDevs[ MAXNETDEVS ];
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void processNetDev( void );
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FORALL( DECLAREFUNC )
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FORALLWIFI( DECLAREFUNC )
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static int processNetDev_( void )
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{
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int i, j;
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char format[ 32 ];
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char devFormat[ 16 ];
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char buf[ 1024 ];
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char tag[ 64 ];
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char* netDevBufP = NetDevBuf;
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char* netDevWifiBufP = NetDevWifiBuf;
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sprintf( format, "%%%d[^\n]\n", (int)sizeof( buf ) - 1 );
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sprintf( devFormat, "%%%ds", (int)sizeof( tag ) - 1 );
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/*Update the values for the wifi interfaces if there is a /proc/net/wireless file*/
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if (*netDevBufP != '\0') {
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/* skip 2 first lines */
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for (i = 0; i < 2; i++) {
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sscanf(netDevBufP, format, buf);
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buf[sizeof(buf) - 1] = '\0';
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netDevBufP += strlen(buf) + 1; /* move netDevBufP to next line */
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}
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for (i = 0; sscanf(netDevBufP, format, buf) == 1; ++i) {
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buf[sizeof(buf) - 1] = '\0';
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netDevBufP += strlen(buf) + 1; /* move netDevBufP to next line */
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if (sscanf(buf, devFormat, tag)) {
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char* pos = strchr(tag, ':');
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if (pos) {
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FORALL( DEFVARS );
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*pos = '\0';
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FORALL( SETZERO );
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sscanf(strchr(buf, ':') + 1, "%llu %llu %llu %llu %llu %llu %llu %llu "
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"%llu %llu %llu %llu %llu %llu %llu %llu",
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&recBytes, &recPacks, &recErrs, &recDrop, &recFifo,
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&recFrame, &recCompressed, &recMulticast,
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&sentBytes, &sentPacks, &sentErrs, &sentDrop,
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&sentFifo, &sentColls, &sentCarrier, &sentCompressed);
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if (i >= NetDevCnt || strcmp(NetDevs[i].name, tag) != 0) {
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/* The network device configuration has changed. We
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* need to reconfigure the netdev module. */
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return -1;
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} else {
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FORALL( CALC );
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if (!NetDevs[i].isWifi)
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NetDevs[i].oldInitialised = 1;
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}
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}
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}
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}
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if ( i != NetDevCnt )
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return -1;
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}
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/*Update the values for the wifi interfaces if there is a /proc/net/wireless file*/
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if (*netDevWifiBufP != '\0') {
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/* skip 2 first lines */
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for (i = 0; i < 2; i++) {
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sscanf(netDevWifiBufP, format, buf);
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buf[sizeof(buf) - 1] = '\0';
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netDevWifiBufP += strlen(buf) + 1; /* move netDevWifiBufP to next line */
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}
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for (j = 0; sscanf(netDevWifiBufP, format, buf) == 1; ++j) {
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buf[sizeof(buf) - 1] = '\0';
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netDevWifiBufP += strlen(buf) + 1; /* move netDevWifiBufP to next line */
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if (sscanf(buf, devFormat, tag)) {
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char* pos = strchr(tag, ':');
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if (pos) {
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FORALLWIFI( DEFWIFIVARS );
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*pos = '\0';
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for (i = 0; i < NetDevCnt; ++i) { /*find the corresponding interface*/
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if (strcmp(tag, NetDevs[i].name) == 0) {
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break;
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}
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}
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unsigned int wifiStatus;
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sscanf(strchr(buf, ':') + 1, " %d %lli. %lli. %lli. %lli %lli %lli %lli %lli %lli",
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&wifiStatus, &linkQuality, &signalLevel, &noiseLevel, &nwid,
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&RxCrypt, &frag, &retry, &misc, &beacon);
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signalLevel -= 256; /*the units are dBm*/
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noiseLevel -= 256;
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FORALLWIFI( CALC );
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NetDevs[i].oldInitialised = 1;
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}
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}
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}
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}
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/* save exact time inverval between this and the last read of
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* /proc/net/dev */
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timeInterval = currSampling.tv_sec - lastSampling.tv_sec +
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( currSampling.tv_usec - lastSampling.tv_usec ) / 1000000.0;
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lastSampling = currSampling;
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Dirty = 0;
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return 0;
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}
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void processNetDev( void )
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{
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int i;
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if ( NetDevCnt == 0 )
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return;
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for ( i = 0; i < 5 && processNetDev_() < 0; ++i ) {
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/* Values for other network devices are lost, but it is still better
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* than not detecting any new devices */
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exitNetDev();
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initNetDev( NetDevSM );
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}
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/* If 5 reconfiguration attemts failed, something is very wrong and
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* we close the netdev module for further use. */
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if ( i == 5 )
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exitNetDev();
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}
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/*
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================================ public part =================================
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*/
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void initNetDev( struct SensorModul* sm )
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{
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int i, j;
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char format[ 32 ];
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char devFormat[ 16 ];
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char buf[ 1024 ];
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char tag[ 64 ];
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char* netDevBufP = NetDevBuf;
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char* netDevWifiBufP = NetDevWifiBuf;
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NetDevSM = sm;
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if ( updateNetDev() < 0 )
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return;
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sprintf( format, "%%%d[^\n]\n", (int)sizeof( buf ) - 1 );
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sprintf( devFormat, "%%%ds", (int)sizeof( tag ) - 1 );
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/* skip 2 first lines */
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for ( i = 0; i < 2; i++ ) {
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sscanf( netDevBufP, format, buf );
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buf[ sizeof( buf ) - 1 ] = '\0';
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netDevBufP += strlen( buf ) + 1; /* move netDevBufP to next line */
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}
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for ( i = 0; sscanf( netDevBufP, format, buf ) == 1; ++i ) {
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buf[ sizeof( buf ) - 1 ] = '\0';
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netDevBufP += strlen( buf ) + 1; /* move netDevBufP to next line */
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NetDevs[i].oldInitialised = 0;
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if ( sscanf( buf, devFormat, tag ) ) {
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char* pos = strchr( tag, ':' );
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FORALL( SETMEMBERZERO );
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if ( pos ) {
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char mon[ MON_SIZE ];
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*pos = '\0';
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strncpy( NetDevs[ i ].name, tag, sizeof( NetDevs[ i ].name ) );
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NetDevs[ i ].name[ sizeof( NetDevs[ i ].name )-1] = 0;
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FORALL( REGISTERSENSOR );
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sscanf( pos + 1, "%lli %lli %lli %lli %lli %lli %lli %lli"
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"%lli %lli %lli %lli %lli %lli %lli %lli",
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&NetDevs[ i ].recBytes, &NetDevs[ i ].recPacks,
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&NetDevs[ i ].recErrs, &NetDevs[ i ].recDrop,
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&NetDevs[ i ].recFifo, &NetDevs[ i ].recFrame,
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&NetDevs[ i ].recCompressed, &NetDevs[ i ].recMulticast,
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&NetDevs[ i ].sentBytes, &NetDevs[ i ].sentPacks,
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&NetDevs[ i ].sentErrs, &NetDevs[ i ].sentDrop,
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&NetDevs[ i ].sentFifo, &NetDevs[ i ].sentColls,
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&NetDevs[ i ].sentCarrier, &NetDevs[ i ].sentCompressed );
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NetDevCnt++;
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}
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}
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}
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/* detect the wifi interfaces*/
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/* skip 2 first lines */
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for ( i = 0; i < 2; i++ ) {
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sscanf( netDevWifiBufP, format, buf );
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buf[ sizeof( buf ) - 1 ] = '\0';
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netDevWifiBufP += strlen( buf ) + 1; /* move netDevWifiBufP to next line */
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}
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for ( j = 0; sscanf( netDevWifiBufP, format, buf ) == 1; ++j ) {
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buf[ sizeof( buf ) - 1 ] = '\0';
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netDevWifiBufP += strlen( buf ) + 1; /* move netDevWifiBufP to next line */
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if ( sscanf( buf, devFormat, tag ) ) {
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char * pos = strchr( tag, ':' );
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if ( pos ) {
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char mon[ MON_SIZE ];
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*pos = '\0';
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/*find and tag the corresponding NetDev as wifi enabled.
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At the end of the loop, i is the index of the device.
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This variable i is used in some macro */
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for (i = 0 ; i < NetDevCnt ; ++i){
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if ( strcmp(tag,NetDevs[ i ].name)==0){
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NetDevs[ i ].isWifi = 1;
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break;
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}
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}
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FORALLWIFI( REGISTERSENSOR );
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}
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FORALLWIFI( SETMEMBERZERO ); /* the variable i must point to the corrrect NetDevs[i]*/
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}
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}
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/* Call processNetDev to elimitate initial peek values. */
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processNetDev();
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}
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void exitNetDev( void )
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{
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int i;
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for ( i = 0; i < NetDevCnt; ++i ) {
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char mon[ MON_SIZE ];
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FORALL( UNREGISTERSENSOR );
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if (NetDevs[ i ].isWifi)
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FORALLWIFI( UNREGISTERSENSOR );
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}
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NetDevCnt = 0;
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}
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int updateNetDev( void )
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{
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/* We read the information about the network interfaces from
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/proc/net/dev. The file should look like this:
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Inter-| Receive | Transmit
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face | bytes packets errs drop fifo frame compressed multicast| bytes packets errs drop fifo colls carrier compressed
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lo:275135772 1437448 0 0 0 0 0 0 275135772 1437448 0 0 0 0 0 0
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eth0:123648812 655251 0 0 0 0 0 0 246847871 889636 0 0 0 0 0 0
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*/
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size_t n;
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int fd;
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long hash;
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char* p;
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if ((fd = open("/proc/net/dev", O_RDONLY)) > 0) {
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n = read(fd, NetDevBuf, NETDEVBUFSIZE - 1);
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if (n == NETDEVBUFSIZE - 1 || n <= 0) {
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log_error("Internal buffer too small to read \'/proc/net/dev\'");
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close(fd);
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return -1;
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}
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gettimeofday(&currSampling, 0);
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close(fd);
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NetDevBuf[n] = '\0';
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/* Calculate hash over the first 7 characters of each line starting
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* after the first newline. This will detect whether any interfaces
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* have either appeared or disappeared. */
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for (p = NetDevBuf, hash = 0; *p; ++p)
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if (*p == '\n')
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for (++p; *p && *p != ':' && *p != '|'; ++p)
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hash = ((hash << 6) + *p) % 390389;
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if (OldHash != 0 && OldHash != hash) {
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print_error("RECONFIGURE");
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CheckSetupFlag = 1;
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}
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OldHash = hash;
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}
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/* We read the information about the wifi from /proc/net/wireless and store it into NetDevWifiBuf */
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if ( ( fd = open( "/proc/net/wireless", O_RDONLY ) ) < 0 ) {
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/* /proc/net/wireless may not exist on some machines. */
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NetDevWifiBuf[0]='\0';
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} else if ( ( n = read( fd, NetDevWifiBuf, NETDEVBUFSIZE - 1 ) ) == NETDEVBUFSIZE - 1 ) {
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log_error( "Internal buffer too small to read \'/proc/net/wireless\'" );
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close( fd );
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return -1;
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} else {
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close( fd );
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NetDevWifiBuf[ n ] = '\0';
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}
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Dirty = 1;
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return 0;
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}
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void checkNetDev( void )
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{
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updateNetDev();
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}
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#define PRINTFUNC( a, b, c, d, e, f ) \
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void printNetDev##a##0( const char* cmd ) \
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{ \
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int i; \
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char* beg; \
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char* end; \
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char dev[ 64 ]; \
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\
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beg = strchr( cmd, '/' ); \
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beg = strchr( beg + 1, '/' ); \
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end = strchr( beg + 1, '/' ); \
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strncpy( dev, beg + 1, end - beg - 1 ); \
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dev[ end - beg - 1 ] = '\0'; \
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\
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if ( Dirty ) \
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processNetDev(); \
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\
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for ( i = 0; i < MAXNETDEVS; ++i ) \
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if ( strcmp( NetDevs[ i ].name, dev ) == 0) { \
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if (f && timeInterval < 0.01) \
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/*Time interval is very small. Can we really get an accurate value from this? Assume not*/ \
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output( "0\n"); \
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else if(f) \
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output( "%li\n", (long) \
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( NetDevs[ i ].delta##a / ( NetDevs[ i ].a##Scale * timeInterval ) ) ); \
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else \
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output( "%li\n", (long) NetDevs[ i ].a ); \
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return; \
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} \
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\
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output( "0\n" ); \
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} \
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void printNetDev##a##0##Info( const char* cmd ) \
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{ \
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char* beg; \
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char* end; \
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char dev[ 64 ]; \
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\
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beg = strchr( cmd, '/' ); \
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beg = strchr( beg + 1, '/' ); \
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end = strchr( beg + 1, '/' ); \
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strncpy( dev, beg + 1, end - beg - 1 ); \
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dev[ end - beg - 1 ] = '\0'; \
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\
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if(f && d[0] == 0) \
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output( "%s %s Rate\t0\t0\t1/s\n", dev, c); \
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else if(f) \
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output( "%s %s Rate\t0\t0\t%s/s\n", dev, c, d ); \
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else \
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output( "%s %s\t0\t0\t%s\n", dev, c, d ); \
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} \
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void printNetDev##a##1( const char* cmd ) \
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{ \
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if(f) { \
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int i; \
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char* beg; \
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char* end; \
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char dev[ 64 ]; \
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\
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beg = strchr( cmd, '/' ); \
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beg = strchr( beg + 1, '/' ); \
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end = strchr( beg + 1, '/' ); \
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strncpy( dev, beg + 1, end - beg - 1 ); \
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dev[ end - beg - 1 ] = '\0'; \
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\
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if ( Dirty ) \
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processNetDev(); \
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\
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for ( i = 0; i < MAXNETDEVS; ++i ) \
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if ( strcmp( NetDevs[ i ].name, dev ) == 0) { \
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output( "%li\n", (long) NetDevs[ i ].a / ( NetDevs[ i ].a##Scale) ); \
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return; \
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} \
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\
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output( "0\n" ); \
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} \
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} \
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void printNetDev##a##1##Info( const char* cmd ) \
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{ \
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if(f) { \
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char* beg; \
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char* end; \
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char dev[ 64 ]; \
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\
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beg = strchr( cmd, '/' ); \
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beg = strchr( beg + 1, '/' ); \
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end = strchr( beg + 1, '/' ); \
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strncpy( dev, beg + 1, end - beg - 1 ); \
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dev[ end - beg - 1 ] = '\0'; \
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\
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output( "%s %s\t0\t0\t%s\n", dev, c, d ); \
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} \
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}
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FORALL( PRINTFUNC )
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FORALLWIFI( PRINTFUNC )
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