ТВПиС лабораторная работа 1 / lab01 / Lab01

#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>


int copyf(char *filein, char *fileout);

int main (int argc, char *argv [])
{
    int Num;
    char *Dir1,*Dir2;
    if (argc != 3) {
	printf ("Too few parameters\n");
	return 1;
    }
    Dir1 = argv[1];
    Dir2 = argv[2];

    printf("How many process?\n");
    scanf("%d",&Num);	

    char File1[256],File2[256];
    DIR *d = opendir (Dir1); 	
    if (!d){ 
	printf("Error opendir");
 	return 1;
    }
    struct dirent *dt;
    int n = 0;
    while((dt=readdir(d))){
		printf("%4d. %s\n", n++,dt->d_name);
		if (n<3) continue;
		sprintf(File1,"%s/%s",Dir1,dt->d_name);
		sprintf(File2,"%s/%s",Dir2,dt->d_name);
		pid_t pid;
    		if (Num>0) pid = fork (); 
  		Num--;
		if (pid == 0){
			if (!copyf(File1,File2))
				 printf("file '%s' copied by #%d\n",
					dt->d_name,getpid());
			return 0;	
			} else { 
			if (!copyf(File1,File2))
				 printf("file '%s' copied by #%d\n",
					dt->d_name,getpid());
			}
		}
    closedir(d);

    return 0;
}

int copyf(char *filein, char *fileout)
{
    FILE *f_in,*f_out;
    f_in = fopen(filein,"rb");
    if (!f_in) return 1;
    if (fopen(fileout,"rb")) return 1;
    f_out = fopen(fileout,"wb");
    if (!f_out) return 1;
    int bytes=0;
    char c = fgetc(f_in);
    while (!feof(f_in))	{
	fputc(c,f_out);	
	bytes++;
	c = fgetc(f_in);
	}
    fclose(f_in);
    fclose(f_out);

    struct stat stat_f;
    stat(filein,&stat_f);
    chmod(fileout,stat_f.st_mode);
    printf("%d bytes ",bytes);	
    return 0;
}