link函数

int Client::_link(Inode *in, Inode *dir, const char *newname, int uid, int gid)
{
  MetaRequest *req = new MetaRequest(CEPH_MDS_OP_LINK);

  filepath path(newname, dir->ino);
  req->set_filepath(path);
  filepath existing(in->ino);
  req->set_filepath2(existing);
  req->dentry_drop = CEPH_CAP_FILE_SHARED;
  req->dentry_unless = CEPH_CAP_FILE_EXCL;

  req->inode = in;
  int res = get_or_create(dir, newname, &req->dentry);
  if (res < 0)
    return res;
  
  res = make_request(req, uid, gid);
  dout(10) << "link result is " << res << dendl;

  trim_cache();
  dout(3) << "link(" << existing << ", " << path << ") = " << res << dendl;
  return res;
}

大概的意思是什么？这是创建符号连接的函数link（）的核心函数

好家伙~

回复 efolzl


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