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| #include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include<sys/stat.h>
#include<sys/types.h>
#include<unistd.h>
#include<fcntl.h>
#include<dirent.h>
#define DIR_MAXSIZE 1024
void copie(char *src, char *dest){
int fd_src, fd_dest;
char buf[DIR_MAXSIZE];
struct stat s;
size_t b_read;
if((fd_src=open(src,O_RDONLY))==-1){
perror("open");
return;
}
if(stat(src,&s) !=0){
perror("stat");
return;
}
if((fd_dest=open(dest, O_WRONLY|O_CREAT|O_TRUNC,s.st_mode))==-1){
perror("open dest");
return;
}
while((b_read=read(fd_src,buf,DIR_MAXSIZE))>0)
write(fd_dest,buf,b_read);
if(b_read == -1){
perror("read");
}
}
void copylink(char *src, char *dest){
char buf[DIR_MAXSIZE];
size_t re;
re = readlink(src,buf,DIR_MAXSIZE);
buf[re] = '\0';
if(symlink(buf,dest) != 0){
perror("symlink");
return ;
}
}
/*
*on suppose que source est déjà un dossier
*Dans le main, on teste donc si c'est un dossier ; si ce n'est pas un ,
*on fait directement une "copie"
*/
void copie_rec(char *source, char *dest){
DIR *rep;
struct dirent *d;
struct stat s;
char current_dir [DIR_MAXSIZE];
char next_dir [DIR_MAXSIZE];
if(lstat(source, &s)){
perror("lstat");
return;
}
if((rep=opendir(source))==NULL){
perror("opendir");
return;
}
if ((s.st_mode & S_IXOTH) || ((s.st_mode & S_IXGRP) && (s.st_gid==getgid()))
|| ((s.st_mode & S_IXUSR) && (s.st_uid == getuid()))){
while((d = readdir(rep))){
if(strcmp(d->d_name, ".")==0 || strcmp(d->d_name,"..")==0)
continue;
sprintf(current_dir, "%s%s",source,d->d_name);
sprintf(next_dir,"%s%s",dest,d->d_name);
if(lstat(current_dir,&s)==-1){
perror("lstat");
return;
}
if(S_ISDIR(s.st_mode)){
if(mkdir(next_dir,s.st_mode)==-1){
perror("mkdir");
return;
}
copie_rec(current_dir,next_dir);
}
else if(S_ISLNK(s.st_mode)){
copylink(current_dir,next_dir);
}
else{
copie(current_dir,next_dir);
}
}
closedir(rep);
}
}
int main(int argc, char *argv[]){
if(argc != 3){
printf( "usage: %s source destination\n");
exit(1);
}
char *src = argv[1];
char *dest = argv[2];
if(src[0] != '/' && dest[0] != '/'){
copie(src, dest);
}
else if(src[0] != '/' && dest[0] == '/'){
int i;
for(i = 1; i<=strlen(dest); i++){
dest[(i - 1)] = dest[i];
}
strcat(dest, "/");
strcat(dest, src);
copie(src, dest);
}
else if(src[0] == '/' && dest[0] == '/'){
int i;
for(i = 1; i<=strlen(dest); i++){
dest[(i - 1)] = dest[i];
}
for(i = 1; i<=strlen(src); i++){
src[(i - 1)] = src[i];
copie_rec(src, dest);
}
else{
fprintf(stderr, "usage: cp1 source destination\n");
exit(1);
}
} |
