blob: 1b112106ff6fc726895536bebe16b7ac66c25306 [file] [log] [blame]
// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file contains a directory which contains blobs.
#ifndef ZIRCON_SYSTEM_ULIB_BLOBFS_DIRECTORY_H_
#define ZIRCON_SYSTEM_ULIB_BLOBFS_DIRECTORY_H_
#ifndef __Fuchsia__
#error Fuchsia-only Header
#endif
#include <fuchsia/blobfs/c/fidl.h>
#include <fuchsia/io/c/fidl.h>
#include <digest/digest.h>
#include <fbl/algorithm.h>
#include <fbl/ref_ptr.h>
#include <fs/vfs.h>
#include <fs/vfs_types.h>
#include <fs/vnode.h>
#include "blob-cache.h"
namespace blobfs {
class Blobfs;
using digest::Digest;
using BlockRegion = fuchsia_blobfs_BlockRegion;
// The root directory of blobfs. This directory is a flat container of all blobs in the filesystem.
class Directory final : public fs::Vnode {
public:
// Constructs the "directory" blob.
Directory(Blobfs* bs);
virtual ~Directory();
DISALLOW_COPY_ASSIGN_AND_MOVE(Directory);
// Shim to allow GetAllocatedRegions call to blobfs.
zx_status_t GetAllocatedRegions(fidl_txn_t* txn) const;
private:
////////////////
// fs::Vnode interface.
zx_status_t GetNodeInfoForProtocol(fs::VnodeProtocol protocol, fs::Rights rights,
fs::VnodeRepresentation* info) final;
fs::VnodeProtocolSet GetProtocols() const final;
zx_status_t Readdir(fs::vdircookie_t* cookie, void* dirents, size_t len,
size_t* out_actual) final;
zx_status_t Read(void* data, size_t len, size_t off, size_t* out_actual) final;
zx_status_t Write(const void* data, size_t len, size_t offset, size_t* out_actual) final;
zx_status_t Append(const void* data, size_t len, size_t* out_end, size_t* out_actual) final;
zx_status_t Lookup(fbl::RefPtr<fs::Vnode>* out, fbl::StringPiece name) final;
zx_status_t GetAttributes(fs::VnodeAttributes* a) final;
zx_status_t Create(fbl::RefPtr<fs::Vnode>* out, fbl::StringPiece name, uint32_t mode) final;
zx_status_t QueryFilesystem(fuchsia_io_FilesystemInfo* out) final;
zx_status_t GetDevicePath(size_t buffer_len, char* out_name, size_t* out_len) final;
zx_status_t Unlink(fbl::StringPiece name, bool must_be_dir) final;
void Sync(SyncCallback closure) final;
#ifdef __Fuchsia__
zx_status_t HandleFsSpecificMessage(fidl_msg_t* msg, fidl_txn_t* txn) final;
static const fuchsia_blobfs_Blobfs_ops* Ops();
#endif
////////////////
// Other methods.
BlobCache& Cache();
Blobfs* const blobfs_;
};
} // namespace blobfs
#endif // ZIRCON_SYSTEM_ULIB_BLOBFS_DIRECTORY_H_