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authorFelix Morgner <felix.morgner@ost.ch>2026-07-03 09:32:30 +0200
committerFelix Morgner <felix.morgner@ost.ch>2026-07-03 09:32:30 +0200
commit3012fa5dfe5dfed5e83baf9b40934ed8e8317627 (patch)
tree00d1c60a3d5d1cdfa55e0ff1691cd3362b6064ee /kernel/src/devices/block_device_utils.cpp
parent5d8a58d538515ffc57ddf82ba40ba763990a8696 (diff)
downloadkernel-3012fa5dfe5dfed5e83baf9b40934ed8e8317627.tar.xz
kernel-3012fa5dfe5dfed5e83baf9b40934ed8e8317627.zip
kernel: rearrange sources according to p1204
Diffstat (limited to 'kernel/src/devices/block_device_utils.cpp')
-rw-r--r--kernel/src/devices/block_device_utils.cpp106
1 files changed, 0 insertions, 106 deletions
diff --git a/kernel/src/devices/block_device_utils.cpp b/kernel/src/devices/block_device_utils.cpp
deleted file mode 100644
index 18d1e9d7..00000000
--- a/kernel/src/devices/block_device_utils.cpp
+++ /dev/null
@@ -1,106 +0,0 @@
-#include <kernel/devices/block_device_utils.hpp>
-
-#include <kernel/devices/block_device.hpp>
-
-#include <kapi/devices/device.hpp>
-#include <kapi/system.hpp>
-
-#include <kstd/cstring>
-#include <kstd/memory>
-#include <kstd/vector>
-
-#include <algorithm>
-#include <cstddef>
-
-namespace kernel::devices::block_device_utils
-{
-
- using block_op = void (*)(size_t idx, size_t off, size_t len, size_t done, devices::block_device * device,
- std::byte * scratch, void * buffer);
-
- auto process_blocks(kstd::shared_ptr<kapi::devices::device> const & device, size_t offset, size_t size, void * buffer,
- block_op op) -> size_t
- {
- if (buffer == nullptr)
- {
- kapi::system::panic("[FILESYSTEM] device_file::process_blocks called with null buffer.");
- }
-
- if (size == 0)
- {
- return 0;
- }
-
- if (!device->is_block_device())
- {
- kapi::system::panic("[FILESYSTEM] device_file: expected block_device.");
- }
-
- auto * block_dev = static_cast<devices::block_device *>(device.get());
-
- size_t const block_size = block_dev->block_size();
- size_t const capacity = block_dev->capacity();
-
- if (offset >= capacity)
- {
- return 0;
- }
- size_t const total_to_process = std::min(size, capacity - offset);
-
- kstd::vector<std::byte> scratch_buffer{block_size};
- auto processed = 0uz;
-
- while (processed < total_to_process)
- {
- size_t const absolute_offset = offset + processed;
- size_t const block_index = absolute_offset / block_size;
- size_t const in_block_offset = absolute_offset % block_size;
- size_t const chunk_size = std::min(total_to_process - processed, block_size - in_block_offset);
-
- op(block_index, in_block_offset, chunk_size, processed, block_dev, scratch_buffer.data(), buffer);
-
- processed += chunk_size;
- }
-
- return processed;
- }
-
- auto read(kstd::shared_ptr<kapi::devices::device> const & device, void * buffer, size_t offset, size_t size) -> size_t
- {
- return process_blocks(device, offset, size, buffer,
- [](size_t idx, size_t off, size_t len, size_t done, devices::block_device * device,
- std::byte * scratch, void * buffer) {
- auto * out = static_cast<std::byte *>(buffer);
- if (off == 0 && len == device->block_size())
- {
- device->read_block(idx, out + done);
- }
- else
- {
- device->read_block(idx, scratch);
- kstd::libc::memcpy(out + done, scratch + off, len);
- }
- });
- }
-
- auto write(kstd::shared_ptr<kapi::devices::device> const & device, void const * buffer, size_t offset, size_t size)
- -> size_t
- {
- return process_blocks(device, offset, size, const_cast<void *>(buffer),
- [](size_t idx, size_t off, size_t len, size_t done, devices::block_device * device,
- std::byte * scratch, void * buffer) {
- auto const * in = static_cast<std::byte const *>(buffer);
- if (off == 0 && len == device->block_size())
- {
- device->write_block(idx, in + done);
- }
- else
- {
- device->read_block(idx, scratch);
- kstd::libc::memcpy(scratch + off, in + done, len);
- device->write_block(idx, scratch);
- }
- });
- }
-
-} // namespace kernel::devices::block_device_utils \ No newline at end of file