sapling/eden/fs/inodes/TreeInodeDirHandle.h
Wez Furlong 9f07485239 add code to serialize FileHandleMap
Summary:
The serialized data for each file handle needs to be enough
to re-construct the handle when we load it into a new process later
on.  We need the inode number, the file handle number that we communicated
to the kernel and a flag to let us know whether it is a file or a dir.

Note that the file handle allocation strategy already accomodates the
idea of migrating to a new process; we don't need to serialize anything
like a next file handle id number.

This doesn't implement instantiating the handles from the loaded state,
it is just the plumbing for saving and loading that state information.

Reviewed By: bolinfest

Differential Revision: D5733079

fbshipit-source-id: 8fb8afb8ae9694d013ce7a4a82c31bc876ed33c9
2017-08-30 19:20:23 -07:00

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/*
* Copyright (c) 2016-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
#pragma once
#include "eden/fs/fuse/DirHandle.h"
#include "eden/fs/inodes/InodePtr.h"
namespace facebook {
namespace eden {
class TreeInodeDirHandle : public fusell::DirHandle {
public:
explicit TreeInodeDirHandle(TreeInodePtr inode);
folly::Future<fusell::DirList> readdir(fusell::DirList&& list, off_t off)
override;
folly::Future<fusell::Dispatcher::Attr> setattr(
const struct stat& attr,
int to_set) override;
folly::Future<folly::Unit> fsyncdir(bool datasync) override;
folly::Future<fusell::Dispatcher::Attr> getattr() override;
fuse_ino_t getInodeNumber() override;
private:
TreeInodePtr inode_;
};
}
}