From e4015ab7cc0320da752f561100701290f07483f8 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Mon, 14 Oct 2019 12:47:08 +0200
Subject: Kernel: Remove unused FileBackedDiskDevice class

---
 Kernel/Devices/FileBackedDiskDevice.cpp | 76 ---------------------------------
 Kernel/Devices/FileBackedDiskDevice.h   | 30 -------------
 2 files changed, 106 deletions(-)
 delete mode 100644 Kernel/Devices/FileBackedDiskDevice.cpp
 delete mode 100644 Kernel/Devices/FileBackedDiskDevice.h

(limited to 'Kernel')

diff --git a/Kernel/Devices/FileBackedDiskDevice.cpp b/Kernel/Devices/FileBackedDiskDevice.cpp
deleted file mode 100644
index 55b0b9f6f1..0000000000
--- a/Kernel/Devices/FileBackedDiskDevice.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-#define _FILE_OFFSET_BITS 64
-
-#include <Kernel/Devices/FileBackedDiskDevice.h>
-#include <cstring>
-#include <sys/stat.h>
-
-//#define FBBD_DEBUG
-#define IGNORE_FILE_LENGTH // Useful for e.g /dev/hda2
-
-RefPtr<FileBackedDiskDevice> FileBackedDiskDevice::create(String&& image_path, unsigned block_size)
-{
-    return adopt(*new FileBackedDiskDevice(move(image_path), block_size));
-}
-
-FileBackedDiskDevice::FileBackedDiskDevice(const String& image_path, size_t block_size)
-    : DiskDevice(0, 0, block_size)
-    , m_image_path(image_path)
-{
-    struct stat st;
-    int result = stat(m_image_path.characters(), &st);
-    ASSERT(result != -1);
-    m_file_length = st.st_size;
-    m_file = fopen(m_image_path.characters(), "r+");
-}
-
-FileBackedDiskDevice::~FileBackedDiskDevice()
-{
-}
-
-bool FileBackedDiskDevice::read_block(unsigned index, u8* out) const
-{
-    DiskOffset offset = index * block_size();
-    return read_internal(offset, block_size(), out);
-}
-
-bool FileBackedDiskDevice::write_block(unsigned index, const u8* data)
-{
-    DiskOffset offset = index * block_size();
-    return write_internal(offset, block_size(), data);
-}
-
-bool FileBackedDiskDevice::read_internal(DiskOffset offset, unsigned length, u8* out) const
-{
-#ifndef IGNORE_FILE_LENGTH
-    if (offset + length >= m_file_length)
-        return false;
-#endif
-#ifdef FBBD_DEBUG
-    printf("[FileBackedDiskDevice] Read device @ offset %llx, length %u\n", offset, length);
-#endif
-    fseeko(m_file, offset, SEEK_SET);
-    unsigned nread = fread(out, sizeof(u8), length, m_file);
-    ASSERT(nread == length);
-    return true;
-}
-
-bool FileBackedDiskDevice::write_internal(DiskOffset offset, unsigned length, const u8* data)
-{
-#ifndef IGNORE_FILE_LENGTH
-    if (offset + length >= m_file_length)
-        return false;
-#endif
-#ifdef FBBD_DEBUG
-    printf("[FileBackedDiskDevice] Write device @ offset %llx, length %u\n", offset, length);
-#endif
-    fseeko(m_file, offset, SEEK_SET);
-    // size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);
-    unsigned nwritten = fwrite(data, sizeof(u8), length, m_file);
-    ASSERT(nwritten == length);
-    return true;
-}
-
-const char* FileBackedDiskDevice::class_name() const
-{
-    return "FileBackedDiskDevice";
-}
diff --git a/Kernel/Devices/FileBackedDiskDevice.h b/Kernel/Devices/FileBackedDiskDevice.h
deleted file mode 100644
index e08513fd3e..0000000000
--- a/Kernel/Devices/FileBackedDiskDevice.h
+++ /dev/null
@@ -1,30 +0,0 @@
-#pragma once
-
-#include <AK/String.h>
-#include <AK/RefPtr.h>
-#include <AK/Types.h>
-#include <Kernel/Devices/DiskDevice.h>
-#include <stdio.h>
-
-class FileBackedDiskDevice final : public DiskDevice {
-public:
-    static RefPtr<FileBackedDiskDevice> create(const String& image_path, size_t block_size);
-    virtual ~FileBackedDiskDevice() override;
-
-    bool is_valid() const { return m_file; }
-
-    virtual bool read_block(unsigned index, u8* out) const override;
-    virtual bool write_block(unsigned index, const u8*) override;
-
-private:
-    virtual const char* class_name() const override;
-
-    bool read_internal(DiskOffset, unsigned length, u8* out) const;
-    bool write_internal(DiskOffset, unsigned length, const u8* data);
-
-    FileBackedDiskDevice(const String& image_path, size_t block_size);
-
-    String m_image_path;
-    FILE* m_file { nullptr };
-    DiskOffset m_file_length { 0 };
-};
-- 
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