Re: traffic counter in C


Hi again.

I'm trying to do something with netstat but it's giving segmentation
fault (core dumped):


#include <stdio.h>
#include <unistd.h>

void recv()
{
#define LINE_LENGTH 500
char output_recv[LINE_LENGTH];
FILE *grab_recv;

/* exec netstat -s */

execl("/usr/bin/netstat -s -p tcp", "", grab_recv);

/* grab the result */

fgets(output_recv, LINE_LENGTH, grab_recv);
pclose(grab_recv);

/* print the result */

sprintf (output_recv, "Recebidos %s bytes ", output_recv);
puts(output_recv);
}

main ()
{
/* exec recv() to know received traffic */

recv();

}

/* EOF */


guilherme.oliveira@xxxxxxxxx escreveu:
Hi !

I want to do a traffic counter in C for FreeBSD.
I have already done the daemon with forks but don't know where to get
the value of transfered data becayse these value isn't in '/proc'
(empty) or 'sysctl -a'

Any ideas ?

.

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