mydir.c

在Linux下实现文件的拷贝

#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <time.h>
#include <string.h>


struct fileinfo{
  char * tiaomu;
  struct fileinfo *next;
};

struct fileinfo * list(char *);
void printout(char *,char *);


void printout(char *dir,char *name)
{
    int i,j;
    char perms[10];
    struct stat sbuf;
    char newname[1024];

    sprintf(newname,"%s/%s",dir,name);
    stat(newname,&sbuf);
    printf("%5d KB",(sbuf.st_size+1024-1)/1024);
    printf("%3d个（uid)%5d(gid)%5d",sbuf.st_nlink,sbuf.st_uid,sbuf.st_gid);
    printf("(size)%7d%.20s",sbuf.st_size,ctime(&sbuf.st_mtime));
    printf("%s\n",name);
}


struct fileinfo * list(char * name)
{
    DIR *dp;
    struct dirent *dir;
    struct fileinfo *dir_node;
    struct fileinfo *head=NULL;
    if((dp=opendir(name))==NULL)         
       sprintf(stderr,"%s:cannt open.\n",name);
    while((dir=readdir(dp))!=NULL)
          {
       dir_node = (struct fileinfo *)malloc(sizeof(struct fileinfo));
       dir_node -> tiaomu = dir -> d_name;
       dir_node -> next = head;
       head = dir_node;
       printout(name,dir->d_name);
          }
    close(dp);
    return head;
}

int main(int argc,char *argv[])
{
 DIR *dirp;
 struct dirent *direntp;
 struct stat statbuf;
 struct fileinfo * test,*headp;

 if(stat(argv[1],&statbuf)<0)
        perror(argv[1]); 
 if((statbuf.st_mode&S_IFMT)==S_IFDIR)
        test=list(argv[1]);
 else   printout(".",argv[1]);
   for(headp=test;headp!=NULL;headp=headp->next)
       puts(headp->tiaomu);
 return 0;
}