mirror of
https://github.com/RGBCube/serenity
synced 2025-05-14 12:05:00 +00:00
cf16b2c8e6
This forces anyone who wants to look into and/or manipulate an address space to lock it. And this replaces the previous, more flimsy, manual spinlock use. Note that pointers *into* the address space are not safe to use after you unlock the space. We've got many issues like this, and we'll have to track those down as wlel.
56 lines
2.1 KiB
C++
56 lines
2.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <Kernel/FileSystem/File.h>
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namespace Kernel {
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class Inode;
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class InodeFile final : public File {
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public:
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static ErrorOr<NonnullLockRefPtr<InodeFile>> create(NonnullLockRefPtr<Inode>&& inode)
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{
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auto file = adopt_lock_ref_if_nonnull(new (nothrow) InodeFile(move(inode)));
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if (!file)
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return ENOMEM;
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return file.release_nonnull();
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}
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virtual ~InodeFile() override;
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Inode const& inode() const { return *m_inode; }
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Inode& inode() { return *m_inode; }
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virtual bool can_read(OpenFileDescription const&, u64) const override { return true; }
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virtual bool can_write(OpenFileDescription const&, u64) const override { return true; }
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virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
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virtual ErrorOr<size_t> write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t) override;
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virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
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virtual ErrorOr<Memory::Region*> mmap(Process&, Memory::AddressSpace&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
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virtual ErrorOr<struct stat> stat() const override { return inode().metadata().stat(); }
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virtual ErrorOr<NonnullOwnPtr<KString>> pseudo_path(OpenFileDescription const&) const override;
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virtual ErrorOr<void> truncate(u64) override;
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virtual ErrorOr<void> sync() override;
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virtual ErrorOr<void> chown(Credentials const&, OpenFileDescription&, UserID, GroupID) override;
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virtual ErrorOr<void> chmod(Credentials const&, OpenFileDescription&, mode_t) override;
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virtual StringView class_name() const override { return "InodeFile"sv; }
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virtual bool is_seekable() const override { return true; }
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virtual bool is_inode() const override { return true; }
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private:
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explicit InodeFile(NonnullLockRefPtr<Inode>&&);
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NonnullLockRefPtr<Inode> m_inode;
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};
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}
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