Purge directory with it's contents

purge.c

void purgeDir(char * name) {
	DIR * d;
	struct dirent * entry;
	const int pathlen = 256;
	char buff[pathlen];

	memset(buff, '\0', pathlen);
	strcpy(buff, name);

	d = opendir(name);
	while((entry = readdir(d)) != NULL) {
		if(!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, ".."))
			continue;
		if(entry->d_type == 4) {
			strcat(buff, entry->d_name);
			strcat(buff, "/");
			purgeDir(buff);
		}
		else {
			strcat(buff, entry->d_name);
			unlink(buff);
		}
		memset(buff, '\0', pathlen);
		strcpy(buff, name);
	}
	closedir(d);
	rmdir(name);
}