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Kernel: add basic support for symlinks

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Bananymous
2023-06-01 00:24:45 +03:00
parent 79d1f665f2
commit 835d32814d
6 changed files with 44 additions and 9 deletions
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5
kernel/include/kernel/FS/Ext2.h
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@@ -141,10 +141,13 @@ namespace Kernel
virtual BAN::StringView name() const override { return m_name; }
virtual BAN::ErrorOr<size_t> read(size_t, void*, size_t) override;
virtual BAN::ErrorOr<BAN::String> link_target() override;
virtual BAN::ErrorOr<BAN::Vector<BAN::String>> read_directory_entries(size_t) override;
virtual BAN::ErrorOr<BAN::RefPtr<Inode>> read_directory_inode(BAN::StringView) override;
virtual BAN::ErrorOr<size_t> read(size_t, void*, size_t) override;
virtual BAN::ErrorOr<void> create_file(BAN::StringView, mode_t) override;
private:

2
kernel/include/kernel/FS/Inode.h
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@@ -78,6 +78,8 @@ namespace Kernel
virtual BAN::StringView name() const = 0;
virtual BAN::ErrorOr<BAN::String> link_target() { ASSERT_NOT_REACHED(); }
virtual BAN::ErrorOr<BAN::RefPtr<Inode>> read_directory_inode(BAN::StringView) { if (!mode().ifdir()) return BAN::Error::from_errno(ENOTDIR); ASSERT_NOT_REACHED(); }
virtual BAN::ErrorOr<BAN::Vector<BAN::String>> read_directory_entries(size_t) { if (!mode().ifdir()) return BAN::Error::from_errno(ENOTDIR); ASSERT_NOT_REACHED(); }

4
kernel/include/kernel/FS/VirtualFileSystem.h
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@@ -25,7 +25,7 @@ namespace Kernel
BAN::RefPtr<Inode> inode;
BAN::String canonical_path;
};
BAN::ErrorOr<File> file_from_absolute_path(BAN::StringView);
BAN::ErrorOr<File> file_from_absolute_path(BAN::StringView, bool follow_links);
private:
VirtualFileSystem() = default;
@@ -39,7 +39,7 @@ namespace Kernel
MountPoint* mount_from_root_inode(BAN::RefPtr<Inode>);
private:
SpinLock m_lock;
RecursiveSpinLock m_lock;
FileSystem* m_root_fs = nullptr;
BAN::Vector<MountPoint> m_mount_points;
};