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/* Vytautas Deinis IF-4/6 Ld3 2*/
/* Failas: loginas_ld3.c */
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

#define SIZE 1048576

int kp_test_open(const char *name);
int kp_test_close(int fd);
int kp_ftwinfo(const char *p, const struct stat *st, int fl, struct FTW *fbuf);

int kp_test_open(const char *name){
   int dskr;
   dskr = open( name, O_RDONLY );
   if( dskr == -1 ){
      perror( name );
      exit(1);

   }

   return dskr;
}

int kp_test_close(int fd){
   int rv;
   rv = close( fd );

   if( rv != 0 ) perror ( "close() failed" );
   else puts( "closed" );
   return rv;
}


int kp_ftwinfo(const char *p, const struct stat *st, int fl, struct FTW *fbuf){
	int failo_vardas;
	int failo_dydis;

	// KAD PATIKRINTI AR FAILAS if(fl == FTW_F ) asdasd; else asdasd; // direktorijai FTW_D // jeigu truksta teisiu katalogui nuskaityti FTW_DNR
	if (stat(p, &st) == 0)
		failo_dydis=st.st_size;

	if(failo_dydis > SIZE) {
		int failo_vardas = open(p,O_RDWR | O_EXCL );
		if( failo_vardas == -1 )
		{
			perror("nepavyko atidaryti failo");
			return 1;
		}
		chmod(p, S_IRUSR);
		printf("File %s\n", p);
		close(p);;
	}

	return 0;

}


int main(int argc, char * Argv[])
{
	printf( "(C) 2016 Vytautas Deinis, %s\n", __FILE__ );
	int f1, f2, f3, f4;
	int rv1;

    if( argc != 5 ){
      printf( "Naudojimas:\n %s failas_ar_katalogas\n", argv[0] );
      exit( 255 );
	}


	int i;
	for ( i = 1; i < 5; i++) {
		int f
		int rv;
		f = kp_test_open( argv[i] );
		rv = nftw( Argv[i], kp_ftwinfo, 50, 0 );
		if( rv == -1 ){
			perror( "nftw failed" );
			exit( 1 );
		}

		kp_test_close( f );
	}

	return 0;


}