1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <Kernel/FileSystem/File.h>
namespace Kernel {
class Inode;
class InodeFile final : public File {
public:
static ErrorOr<NonnullRefPtr<InodeFile>> create(NonnullRefPtr<Inode>&& inode)
{
auto file = adopt_ref_if_nonnull(new (nothrow) InodeFile(move(inode)));
if (!file)
return ENOMEM;
return file.release_nonnull();
}
virtual ~InodeFile() override;
const Inode& inode() const { return *m_inode; }
Inode& inode() { return *m_inode; }
virtual bool can_read(const OpenFileDescription&, u64) const override { return true; }
virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
virtual ErrorOr<Memory::Region*> mmap(Process&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
virtual ErrorOr<struct stat> stat() const override { return inode().metadata().stat(); }
virtual ErrorOr<NonnullOwnPtr<KString>> pseudo_path(const OpenFileDescription&) const override;
virtual ErrorOr<void> truncate(u64) override;
virtual ErrorOr<void> sync() override;
virtual ErrorOr<void> chown(OpenFileDescription&, UserID, GroupID) override;
virtual ErrorOr<void> chmod(OpenFileDescription&, mode_t) override;
virtual StringView class_name() const override { return "InodeFile"sv; }
virtual bool is_seekable() const override { return true; }
virtual bool is_inode() const override { return true; }
private:
explicit InodeFile(NonnullRefPtr<Inode>&&);
NonnullRefPtr<Inode> m_inode;
};
}
|
