访问文件目录dir

#include 
#include 
#include 
#include 
#include 
#include 

void printdir(char* dir, int depth){
	DIR *dp;
	struct dirent *dir_entry;
	struct stat stat_buf;

	if((dp=opendir(dir))==NULL){
		fprintf(stderr, "cannot open directory: %s", dir);
		return;
	}

	chdir(dir);
	while((dir_entry =  readdir(dp)) != NULL){
		lstat(dir_entry->d_name, &stat_buf);
		if(S_ISDIR(stat_buf.st_mode)){
			//
			if(strcmp(dir_entry->d_name, ".") == 0|| strcmp(dir_entry->d_name, "..") == 0) 
				continue;
			printf("%*s%s/\n", depth, "", dir_entry->d_name);
			printdir(dir_entry->d_name, 4);
		}else{
			printf("%*s%s/\n", depth, "", dir_entry->d_name);
		}
	}//while
	chdir("..");
	closedir(dp);
}

int main(int argc, char* argv[]){
	printf("==>Directory scan of /home/workspace:\n");
	printdir("/home/workspace", 0);
	printf("==>Done.\n");

	exit(0);
}