#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <aio.h>
#define MB 1024

int sukurti(char *name);
int fill(const int d, struct aiocb *aiorp, void *buf, const int count);

int sukurti(char *name){
   int dskr;
   dskr = open( name, O_RDONLY );
   if( dskr == -1 ){
          printf("Failas sukurtas, nes jo nebuvo\n");
          dskr = open( name, O_WRONLY | O_CREAT, 0644);

   }else{
           printf("Jau yra toks failas!\n");
           exit(1);
   }
   return dskr;
}

int fill(const int d, struct aiocb *aiorp, void *buf, const int count){
        int rv = 0;
        memset( (void *)aiorp, 'A', sizeof( struct aiocb ) );
        aiorp->aio_fildes = d;
        aiorp->aio_buf = buf;
        aiorp->aio_nbytes = count;
        aiorp->aio_offset = 0;
        rv = aio_write( aiorp );
        return rv;

}

int main(int argc, char * argv[]){
        int des;
        int rv;
        struct aiocb aior;
        int x = atoi(argv[2]);
        printf("%d\n", x);
        int size = MB * MB * x;
        char buffer[size];
        if(argc == 3){
                printf("just %s\n", argv[1]);
                des = sukurti(argv[1]);
                rv = fill(des, &aior, buffer, sizeof(buffer));
        }else{
                printf("Blogas\n");
        }
        return 0;
}