Method _getcwd

src/client/Client.cc:13463–13503

}

int Client::_getcwd(string& dir, const UserPerm& perms)
{
  filepath path;
  ldout(cct, 10) << __func__ << " " << *cwd << dendl;

  auto in = cwd;
  while (in != root) {
    ceph_assert(in->dentries.size() < 2); // dirs can't be hard-linked

    // A cwd or ancester is unlinked
    if (in->dentries.empty()) {
      return -ENOENT;
    }

    Dentry *dn = in->get_first_parent();

    if (!dn) {
      // look it up
      ldout(cct, 10) << __func__ << " looking up parent for " << *in << dendl;
      MetaRequest *req = new MetaRequest(CEPH_MDS_OP_LOOKUPNAME);
      req->set_filepath(filepath(in->ino));
      req->set_inode(in);
      int res = make_request(req, perms);
      if (res < 0)
	break;

      // start over
      path = filepath();
      in = cwd;
      continue;
    }
    auto* diri = dn->dir->parent_inode;
    ceph_assert(diri);
    auto dname = _unwrap_name(*diri, dn->name, dn->alternate_name);
    path.push_front_dentry(dname);
    in = InodeRef(diri);
  }
  dir = "/";
  dir += path.get_path();
  return 0;
}

int Client::getcwd(string& dir, const UserPerm& perms)
{