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[VictoriaFalls] Add a VFS yunq stub and register it.

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Drew Galbraith 2023-10-25 23:08:45 -07:00
parent f815eb5614
commit 48c7721b0f
11 changed files with 473 additions and 1 deletions
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158
sys/victoriafalls/lib/victoriafalls/victoriafalls.yunq.cpp Normal file
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// Generated file -- DO NOT MODIFY.
#include "victoriafalls.yunq.h"
namespace {
const uint64_t header_size = 24; // 4x uint32, 1x uint64
struct ExtPointer {
uint32_t offset;
uint32_t length;
};
void CheckHeader(const glcr::ByteBuffer& bytes) {
// TODO: Check ident.
// TODO: Parse core size.
// TODO: Parse extension size.
// TODO: Check CRC32
// TODO: Parse options.
}
void WriteHeader(glcr::ByteBuffer& bytes, uint64_t offset, uint32_t core_size, uint32_t extension_size) {
bytes.WriteAt<uint32_t>(offset + 0, 0xDEADBEEF); // TODO: Chose a more unique ident sequence.
bytes.WriteAt<uint32_t>(offset + 4, core_size);
bytes.WriteAt<uint32_t>(offset + 8, extension_size);
bytes.WriteAt<uint32_t>(offset + 12, 0); // TODO: Calculate CRC32.
bytes.WriteAt<uint64_t>(offset + 16, 0); // TODO: Add options.
}
} // namespace
void OpenFileRequest::ParseFromBytes(const glcr::ByteBuffer& bytes, uint64_t offset) {
CheckHeader(bytes);
// Parse path.
auto path_pointer = bytes.At<ExtPointer>(offset + header_size + (8 * 0));
set_path(bytes.StringAt(offset + path_pointer.offset, path_pointer.length));
}
void OpenFileRequest::ParseFromBytes(const glcr::ByteBuffer& bytes, uint64_t offset, const glcr::CapBuffer& caps) {
CheckHeader(bytes);
// Parse path.
auto path_pointer = bytes.At<ExtPointer>(offset + header_size + (8 * 0));
set_path(bytes.StringAt(offset + path_pointer.offset, path_pointer.length));
}
uint64_t OpenFileRequest::SerializeToBytes(glcr::ByteBuffer& bytes, uint64_t offset) const {
uint32_t next_extension = header_size + 8 * 1;
const uint32_t core_size = next_extension;
// Write path.
ExtPointer path_ptr{
.offset = next_extension,
// FIXME: Check downcast of str length.
.length = (uint32_t)path().length(),
};
bytes.WriteStringAt(offset + next_extension, path());
next_extension += path_ptr.length;
bytes.WriteAt<ExtPointer>(offset + header_size + (8 * 0), path_ptr);
// The next extension pointer is the length of the message.
WriteHeader(bytes, offset, core_size, next_extension);
return next_extension;
}
uint64_t OpenFileRequest::SerializeToBytes(glcr::ByteBuffer& bytes, uint64_t offset, glcr::CapBuffer& caps) const {
uint32_t next_extension = header_size + 8 * 1;
const uint32_t core_size = next_extension;
uint64_t next_cap = 0;
// Write path.
ExtPointer path_ptr{
.offset = next_extension,
// FIXME: Check downcast of str length.
.length = (uint32_t)path().length(),
};
bytes.WriteStringAt(offset + next_extension, path());
next_extension += path_ptr.length;
bytes.WriteAt<ExtPointer>(offset + header_size + (8 * 0), path_ptr);
// The next extension pointer is the length of the message.
WriteHeader(bytes, offset, core_size, next_extension);
return next_extension;
}
void OpenFileResponse::ParseFromBytes(const glcr::ByteBuffer& bytes, uint64_t offset) {
CheckHeader(bytes);
// Parse path.
auto path_pointer = bytes.At<ExtPointer>(offset + header_size + (8 * 0));
set_path(bytes.StringAt(offset + path_pointer.offset, path_pointer.length));
// Parse memory.
// FIXME: Implement in-buffer capabilities for inprocess serialization.
set_memory(0);
}
void OpenFileResponse::ParseFromBytes(const glcr::ByteBuffer& bytes, uint64_t offset, const glcr::CapBuffer& caps) {
CheckHeader(bytes);
// Parse path.
auto path_pointer = bytes.At<ExtPointer>(offset + header_size + (8 * 0));
set_path(bytes.StringAt(offset + path_pointer.offset, path_pointer.length));
// Parse memory.
uint64_t memory_ptr = bytes.At<uint64_t>(offset + header_size + (8 * 1));
set_memory(caps.At(memory_ptr));
}
uint64_t OpenFileResponse::SerializeToBytes(glcr::ByteBuffer& bytes, uint64_t offset) const {
uint32_t next_extension = header_size + 8 * 2;
const uint32_t core_size = next_extension;
// Write path.
ExtPointer path_ptr{
.offset = next_extension,
// FIXME: Check downcast of str length.
.length = (uint32_t)path().length(),
};
bytes.WriteStringAt(offset + next_extension, path());
next_extension += path_ptr.length;
bytes.WriteAt<ExtPointer>(offset + header_size + (8 * 0), path_ptr);
// Write memory.
// FIXME: Implement inbuffer capabilities.
bytes.WriteAt<uint64_t>(offset + header_size + (8 * 1), 0);
// The next extension pointer is the length of the message.
WriteHeader(bytes, offset, core_size, next_extension);
return next_extension;
}
uint64_t OpenFileResponse::SerializeToBytes(glcr::ByteBuffer& bytes, uint64_t offset, glcr::CapBuffer& caps) const {
uint32_t next_extension = header_size + 8 * 2;
const uint32_t core_size = next_extension;
uint64_t next_cap = 0;
// Write path.
ExtPointer path_ptr{
.offset = next_extension,
// FIXME: Check downcast of str length.
.length = (uint32_t)path().length(),
};
bytes.WriteStringAt(offset + next_extension, path());
next_extension += path_ptr.length;
bytes.WriteAt<ExtPointer>(offset + header_size + (8 * 0), path_ptr);
// Write memory.
caps.WriteAt(next_cap, memory());
bytes.WriteAt<uint64_t>(offset + header_size + (8 * 1), next_cap++);
// The next extension pointer is the length of the message.
WriteHeader(bytes, offset, core_size, next_extension);
return next_extension;
}