InodeFile.h 2.7 KB

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  1. /*
  2. * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. *
  8. * 1. Redistributions of source code must retain the above copyright notice, this
  9. * list of conditions and the following disclaimer.
  10. *
  11. * 2. Redistributions in binary form must reproduce the above copyright notice,
  12. * this list of conditions and the following disclaimer in the documentation
  13. * and/or other materials provided with the distribution.
  14. *
  15. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  16. * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18. * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  19. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  21. * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  22. * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  23. * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  24. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25. */
  26. #pragma once
  27. #include <Kernel/FileSystem/File.h>
  28. class Inode;
  29. class InodeFile final : public File {
  30. public:
  31. static NonnullRefPtr<InodeFile> create(NonnullRefPtr<Inode>&& inode)
  32. {
  33. return adopt(*new InodeFile(move(inode)));
  34. }
  35. virtual ~InodeFile() override;
  36. const Inode& inode() const { return *m_inode; }
  37. Inode& inode() { return *m_inode; }
  38. virtual bool can_read(const FileDescription&) const override { return true; }
  39. virtual bool can_write(const FileDescription&) const override { return true; }
  40. virtual ssize_t read(FileDescription&, u8*, ssize_t) override;
  41. virtual ssize_t write(FileDescription&, const u8*, ssize_t) override;
  42. virtual KResultOr<Region*> mmap(Process&, FileDescription&, VirtualAddress preferred_vaddr, size_t offset, size_t size, int prot) override;
  43. virtual String absolute_path(const FileDescription&) const override;
  44. virtual KResult truncate(u64) override;
  45. virtual KResult chown(uid_t, gid_t) override;
  46. virtual KResult chmod(mode_t) override;
  47. virtual const char* class_name() const override { return "InodeFile"; }
  48. virtual bool is_seekable() const override { return true; }
  49. virtual bool is_inode() const override { return true; }
  50. private:
  51. explicit InodeFile(NonnullRefPtr<Inode>&&);
  52. NonnullRefPtr<Inode> m_inode;
  53. };