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369d85108f
Summary: Always send setattr and getattr straight to the inode rather than going through the FileHandle. Reviewed By: wez Differential Revision: D10187876 fbshipit-source-id: 4c3aaa977cd568d5f9cc4b28583e164119c07c1b
68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
/*
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* Copyright (c) 2016-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*/
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#pragma once
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#include <folly/futures/Future.h>
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#include "eden/fs/fuse/BufVec.h"
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#include "eden/fs/fuse/Dispatcher.h"
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#include "eden/fs/fuse/PollHandle.h"
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namespace facebook {
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namespace eden {
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class Dispatcher;
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class FileHandleBase {
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public:
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virtual ~FileHandleBase();
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/* The result of an ioctl operation */
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struct Ioctl {
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int result;
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BufVec buf;
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};
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/**
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* Ioctl
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*
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* Only well-formed (restricted) ioctls are supported. These are ioctls
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* that have the argument size encoded using _IOR, _IOW, _IOWR macros.
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*
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* @param arg is the argument passed in from userspace
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* @param inputData is a copy of the arg data from userspace
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* @param outputSize is the maximum size of the output data
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*/
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virtual folly::Future<Ioctl> ioctl(
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int cmd,
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const void* arg,
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folly::ByteRange inputData,
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size_t outputSize);
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/**
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* Poll for IO readiness
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*
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* Introduced in version 2.8
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*
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* Note: If ph is non-NULL, the client should notify
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* when IO readiness events occur by calling
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* ph->notify().
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*
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* Regardless of the number of times poll with a non-NULL ph
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* is received, single notification is enough to clear all.
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* Notifying more times incurs overhead but doesn't harm
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* correctness.
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*
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* Return the poll(2) revents mask.
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*/
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virtual folly::Future<unsigned> poll(std::unique_ptr<PollHandle> ph);
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};
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} // namespace eden
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} // namespace facebook
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