iso文件的mount方法

char mih[1024]; 
   memset(mih, 0, sizeof(mih));
   sprintf(mih,"umount %s",mount_isopath);
   system(mih);
   memset(mih, 0, sizeof(mih));
   sprintf(mih,"losetup -d /dev/loop0");
   system(mih);
   memset(mih, 0, sizeof(mih));
   sprintf(mih,"rm -rf %s",mount_isopath);
   system(mih);
   memset(mih, 0, sizeof(mih));
   sprintf(mih,"mkdir %s",mount_isopath); 
   system(mih);
   memset(mih, 0, sizeof(mih));
   sprintf(mih,"losetup  /dev/loop0 '%s' ",this->url);
   system(mih);
   memset(mih, 0, sizeof(mih));
   sprintf(mih,"mount /dev/loop0 '%s' ",mount_isopath);
   system(mih);
   memset(this->url,0,sizeof(this->url));
   sprintf(this->url,"%s",mount_isopath);