libipfwc memory leak?

[Andriy T . Yanko]

Hi people!

I know that this letter is not for this mailllist. But I'm tired to find 
mistake.

I just writen this smal code for example:

--- cut  main.c ---
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include <mcheck.h>
#include "libipfwc/libipfwc.h"


int main( int argc, char **argv)
{
    pid_t pid;

    unsigned int num_chains; 
    unsigned int num_rules; 
    static struct ipfwc_fwchain *chains;
    struct ipfwc_fwrule *rules;

    pid=fork();
    if ( pid == -1 ) { printf("Can't fork!\n"); exit(0); }
    if ( pid != 0) exit(0);
    setsid();
        
    mtrace();

    while(1)
    {
        chains=ipfwc_get_chainnames(&num_chains); 
        rules=ipfwc_get_rules(&num_rules,0); 
        sleep(1);
    }
    
    muntrace();
    return 0;
}
--- end ---

gcc -Wall -o test5  main.o libipfwc/libipfwc.o
export MALLOC_TRACE=log
./test5

mtrace test5 log:

Memory not freed:
-----------------
   Address     Size     Caller
0x00000080        0  at /usr/src/asplinux/BUILD/glibc-2.2.4/libio/iofopen.c:50
0x0804b558     0xb0  at /usr/src/asplinux/BUILD/glibc-2.2.4/csu/init.c:0
0x0804b610    0x16c  at /usr/src/asplinux/BUILD/glibc-2.2.4/libio/iofopen.c:50
0x0804b780    0x16c  at /usr/src/asplinux/BUILD/glibc-2.2.4/libio/iofopen.c:50
.............................................................................................


When program is runnig I just type command "ps aux" 
and I saw that my program get more and more system memory.

Is this memory leak of libipfwc library or glibc library?

In  libipfwc.c  function ipfwc_get_chainnames & ipfwc_get_rules use malloc() 
but not use free().
But mtrace show function from glibc.
It's maybe ok for program ipchains but in my case is not gut.

How to fix it?

THANKS IN ADVANCE.


-- 
Andriy T. Yanko
address@hidden

* Avoid The Gates of Hell use Linux