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#include "kernel/test_support/devices/block_device.hpp"
#include "kernel/devices/block_device.hpp"
#include <kstd/string>
#include <kstd/vector>
#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <string.h>
namespace kernel::tests::devices
{
block_device::block_device(size_t major, size_t minor, kstd::string const & name, size_t block_size,
size_t initial_size)
: kernel::devices::block_device(major, minor, name, block_size)
{
data.resize(initial_size, 0);
}
auto block_device::init() -> bool
{
return true;
}
auto block_device::read_block(size_t block_index, void * buffer) const -> void
{
auto const offset = block_index * block_size();
if (offset >= data.size())
{
kstd::libc::memset(buffer, 0, block_size());
return;
}
auto const bytes_to_read = std::min(block_size(), data.size() - offset);
kstd::libc::memcpy(buffer, data.data() + offset, bytes_to_read);
if (bytes_to_read < block_size())
{
kstd::libc::memset(static_cast<uint8_t *>(buffer) + bytes_to_read, 0, block_size() - bytes_to_read);
}
}
auto block_device::write_block(size_t block_index, void const * buffer) -> void
{
auto const offset = block_index * block_size();
auto const write_end = offset + block_size();
if (write_end > data.size())
{
data.resize(write_end, 0);
}
kstd::libc::memcpy(data.data() + offset, static_cast<uint8_t const *>(buffer), block_size());
}
auto block_device::size() const -> size_t
{
return data.size();
}
} // namespace kernel::tests::devices
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