mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-21 10:19:03 +03:00
649d2faeab
We had some inconsistencies before: - Sometimes "The", sometimes "the" - Sometimes trailing ".", sometimes no trailing "." I picked the most common one (lowecase "the", trailing ".") and applied it to all copyright headers. By using the exact same string everywhere we can ensure nothing gets missed during a global search (and replace), and that these inconsistencies are not spread any further (as copyright headers are commonly copied to new files).
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/*
|
|
* Copyright (c) 2021, the SerenityOS developers.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/Memory.h>
|
|
#include <AK/StringView.h>
|
|
#include <Kernel/FileSystem/FileDescription.h>
|
|
#include <Kernel/Storage/RamdiskController.h>
|
|
#include <Kernel/Storage/RamdiskDevice.h>
|
|
|
|
namespace Kernel {
|
|
|
|
NonnullRefPtr<RamdiskDevice> RamdiskDevice::create(const RamdiskController& controller, NonnullOwnPtr<Region>&& region, int major, int minor)
|
|
{
|
|
return adopt_ref(*new RamdiskDevice(controller, move(region), major, minor));
|
|
}
|
|
|
|
RamdiskDevice::RamdiskDevice(const RamdiskController& controller, NonnullOwnPtr<Region>&& region, int major, int minor)
|
|
: StorageDevice(controller, major, minor, 512, region->size() / 512)
|
|
, m_region(move(region))
|
|
{
|
|
dmesgln("Ramdisk: Device #{} @ {}, Capacity={}", minor, m_region->vaddr(), max_addressable_block() * 512);
|
|
}
|
|
|
|
RamdiskDevice::~RamdiskDevice()
|
|
{
|
|
}
|
|
|
|
const char* RamdiskDevice::class_name() const
|
|
{
|
|
return "RamdiskDevice";
|
|
}
|
|
|
|
void RamdiskDevice::start_request(AsyncBlockDeviceRequest& request)
|
|
{
|
|
Locker locker(m_lock);
|
|
|
|
u8* base = m_region->vaddr().as_ptr();
|
|
size_t size = m_region->size();
|
|
u8* offset = base + request.block_index() * 512;
|
|
size_t length = request.block_count() * 512;
|
|
|
|
if ((offset + length > base + size) || (offset + length < base)) {
|
|
request.complete(AsyncDeviceRequest::Failure);
|
|
} else {
|
|
bool success;
|
|
|
|
if (request.request_type() == AsyncBlockDeviceRequest::Read) {
|
|
success = request.buffer().write(offset, length);
|
|
} else {
|
|
success = request.buffer().read(offset, length);
|
|
}
|
|
|
|
request.complete(success ? AsyncDeviceRequest::Success : AsyncDeviceRequest::MemoryFault);
|
|
}
|
|
}
|
|
|
|
String RamdiskDevice::device_name() const
|
|
{
|
|
// FIXME: Try to not hardcode a maximum of 16 partitions per drive!
|
|
size_t drive_index = minor() / 16;
|
|
return String::formatted("ramdisk{}", drive_index);
|
|
}
|
|
|
|
}
|