forked from Bananymous/banan-os
95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
#pragma once
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#include <kernel/FS/Inode.h>
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#include <limits.h>
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namespace Kernel
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{
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class RamFileSystem;
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class RamInode : public Inode
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{
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public:
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virtual ~RamInode() = default;
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virtual ino_t ino() const override { return m_inode_info.ino; }
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virtual Mode mode() const override { return { m_inode_info.mode }; }
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virtual nlink_t nlink() const override { return m_inode_info.nlink; }
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virtual uid_t uid() const override { return m_inode_info.uid; }
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virtual gid_t gid() const override { return m_inode_info.gid; }
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virtual off_t size() const override { return m_inode_info.size; }
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virtual timespec atime() const override { return m_inode_info.atime; }
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virtual timespec mtime() const override { return m_inode_info.mtime; }
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virtual timespec ctime() const override { return m_inode_info.ctime; }
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virtual blksize_t blksize() const override { return m_inode_info.blksize; }
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virtual blkcnt_t blocks() const override { return m_inode_info.blocks; }
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virtual dev_t dev() const override { return m_inode_info.dev; }
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virtual dev_t rdev() const override { return m_inode_info.rdev; }
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virtual BAN::StringView name() const override { ASSERT_NOT_REACHED(); }
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void add_link() { m_inode_info.nlink++; }
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protected:
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RamInode(RamFileSystem& fs, mode_t, uid_t, gid_t);
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static BAN::ErrorOr<BAN::RefPtr<RamInode>> create(RamFileSystem&, mode_t, uid_t, gid_t);
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protected:
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struct FullInodeInfo
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{
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ino_t ino;
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mode_t mode;
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nlink_t nlink;
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uid_t uid;
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gid_t gid;
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off_t size;
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timespec atime;
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timespec mtime;
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timespec ctime;
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blksize_t blksize;
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blkcnt_t blocks;
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dev_t dev;
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dev_t rdev;
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};
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protected:
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RamFileSystem& m_fs;
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FullInodeInfo m_inode_info;
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BAN::Vector<uint8_t> m_data;
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friend class RamFileSystem;
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};
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class RamDirectoryInode final : public RamInode
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{
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public:
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~RamDirectoryInode() = default;
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virtual BAN::ErrorOr<BAN::RefPtr<Inode>> directory_find_inode(BAN::StringView) override;
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virtual BAN::ErrorOr<void> directory_read_next_entries(off_t, DirectoryEntryList*, size_t) override;
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virtual BAN::ErrorOr<void> create_file(BAN::StringView, mode_t, uid_t, gid_t) override;
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private:
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RamDirectoryInode(RamFileSystem&, ino_t parent, mode_t, uid_t, gid_t);
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static BAN::ErrorOr<BAN::RefPtr<RamDirectoryInode>> create(RamFileSystem&, ino_t parent, mode_t, uid_t, gid_t);
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private:
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static constexpr size_t m_name_max = NAME_MAX;
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struct Entry
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{
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char name[m_name_max + 1];
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size_t name_len = 0;
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ino_t ino;
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};
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private:
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BAN::Vector<Entry> m_entries;
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ino_t m_parent;
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friend class RamFileSystem;
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};
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} |