系统编程拷贝文件或者目录(可以做出一个动态库哦）

 

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<sys/types.h>
#include<fcntl.h>
#include<unistd.h>
#include<dirent.h>
#include<sys/stat.h>
char paths[1000],patht[1000],temp_paths[1000],temp_patht[1000];
void copy(char *spathname,char *tpathname)//拷贝文件
{
int sfp,tfp;
char buf[1024];
int count=0;
struct stat s;
stat(spathname,&s);
sfp=open(spathname,O_RDONLY,s.st_mode);//保护原文件权限
while(1){
if(sfp<0){printf("don't open the file1\n");exit(1);}
count=read(sfp,buf,1023);
if(count==0)break;
buf[count]='\0';
tfp=open(tpathname,O_CREAT|O_RDWR,s.st_mode);
if(tfp<0){printf("don't open the file2\n");exit(1);}
write(tfp,buf,strlen(buf));
}
close(sfp);
close(tfp);
}
void d_copy(char *spathname,char *tpathname)//拷贝目录
{
struct stat s,t,temp_s,temp_t;
struct dirent *s_p;
DIR *dirs,*dirt;
stat(spathname,&s);
mkdir(tpathname,s.st_mode);
chown(tpathname,s.st_uid,s.st_gid);
dirt=opendir(tpathname);
dirs=opendir(spathname);
strcpy(temp_paths,spathname);
strcpy(temp_patht,tpathname);
while((s_p=readdir(dirs))!=NULL)
{
if(strcmp(s_p->d_name,".")!=0&&strcmp(s_p->d_name,"..")!=0)
{
strcat(temp_paths,"/");
strcat(temp_paths,s_p->d_name);
strcat(temp_patht,"/");
strcat(temp_patht,s_p->d_name);
lstat(temp_paths,&s);
temp_s.st_mode=s.st_mode;
if(S_ISLNK(temp_s.st_mode))
{
printf("%s is a symbol link file\n",temp_paths);
}
else if(S_ISDIR(temp_s.st_mode))
{
printf("copy directory %s....\n",temp_paths);
d_copy(temp_paths,temp_patht);
strcpy(temp_paths,spathname);
strcpy(temp_patht,tpathname);
}
else if(S_ISREG(temp_s.st_mode))
{
printf("copy file %s....\n",temp_paths);
copy(temp_paths,temp_patht);
strcpy(temp_paths,spathname);
strcpy(temp_patht,tpathname);
}
}
}
}
int main(int argc,char *argv[])
{
struct dirent *sp,*tp;
char spath[1000],tpath[1000],temp_spath[1000],temp_tpath[1000];
struct stat sbuf,tbuf,temp_sbuf,temp_tbuf;
DIR *dir_s,*dir_t;
dir_s=opendir(argv[1]);
if(dir_s==NULL)
{
printf("目录不存在");
return 0;
}
if(stat(argv[1],&sbuf)!=0)
{
printf("get satus error!\n");
return 0;
}
dir_t=opendir(argv[2]);
if(dir_t==NULL)
{
mkdir(argv[2],sbuf.st_mode);
chown(argv[2],sbuf.st_uid,sbuf.st_gid);
}
strcpy(spath,argv[1]);
strcpy(tpath,argv[2]);
strcpy(temp_spath,argv[1]);
strcpy(temp_tpath,argv[2]);
printf("being copy...");
while((sp=readdir(dir_s))!=NULL)
{
if(strcmp(sp->d_name,".")!=0&&strcmp(sp->d_name,"..")!=0)
{
strcat(temp_spath,"/");
strcat(temp_spath,sp->d_name);
strcat(temp_tpath,"/");
strcat(temp_tpath,sp->d_name);
lstat(temp_spath,&sbuf);
temp_sbuf.st_mode=sbuf.st_mode;
if(S_ISLNK(temp_sbuf.st_mode))
{
printf("%s is a symbolic link file\n",temp_spath);
}
else if ((S_IFMT&temp_sbuf.st_mode)==S_IFREG)
{
printf("copy file %s.....\n",temp_spath);
copy(temp_spath,temp_tpath);
strcpy(temp_tpath,tpath);
strcpy(temp_spath,spath);
}
else if((S_IFMT&temp_sbuf.st_mode)==S_IFDIR)
{
printf("copy directory %s....\n",temp_spath);
d_copy(temp_spath,temp_tpath);
strcpy(temp_tpath,tpath);
strcpy(temp_spath,spath);
}

}
}
printf("copy end!\n");
closedir(dir_t);
closedir(dir_s);
return 0;

}

 

--欢迎交流哦^-^--