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use crate::result::*;
use super::*;
use core::mem as cmem;
#[inline(always)]
pub fn read_command_from_msg_buffer(ctx: &mut CommandContext) -> CommandType {
unsafe {
let mut ipc_buf = get_msg_buffer();
let command_header = ipc_buf as *mut CommandHeader;
ipc_buf = command_header.offset(1) as *mut u8;
let command_type = (*command_header).get_command_type();
let data_size = (*command_header).get_data_word_count() * cmem::size_of::<u32>() as u32;
ctx.in_params.data_size = data_size;
if (*command_header).get_has_special_header() {
let special_header = ipc_buf as *mut CommandSpecialHeader;
ipc_buf = special_header.offset(1) as *mut u8;
ctx.in_params.send_process_id = (*special_header).get_send_process_id();
if ctx.in_params.send_process_id {
let process_id_ptr = ipc_buf as *mut u64;
ctx.in_params.process_id = *process_id_ptr;
ipc_buf = process_id_ptr.offset(1) as *mut u8;
}
let copy_handle_count = (*special_header).get_copy_handle_count();
ipc_buf = read_array_from_buffer(ipc_buf, copy_handle_count, &mut ctx.in_params.copy_handles);
let move_handle_count = (*special_header).get_move_handle_count();
ipc_buf = read_array_from_buffer(ipc_buf, move_handle_count, &mut ctx.in_params.move_handles);
}
let send_static_count = (*command_header).get_send_static_count();
ipc_buf = read_array_from_buffer(ipc_buf, send_static_count, &mut ctx.send_statics);
let send_buffer_count = (*command_header).get_send_buffer_count();
ipc_buf = read_array_from_buffer(ipc_buf, send_buffer_count, &mut ctx.send_buffers);
let receive_buffer_count = (*command_header).get_receive_buffer_count();
ipc_buf = read_array_from_buffer(ipc_buf, receive_buffer_count, &mut ctx.receive_buffers);
let exchange_buffer_count = (*command_header).get_exchange_buffer_count();
ipc_buf = read_array_from_buffer(ipc_buf, exchange_buffer_count, &mut ctx.exchange_buffers);
ctx.in_params.data_words_offset = ipc_buf;
ipc_buf = ipc_buf.offset(data_size as isize);
let receive_static_count = (*command_header).get_receive_static_count();
read_array_from_buffer(ipc_buf, receive_static_count, &mut ctx.receive_statics);
convert_command_type(command_type)
}
}
#[inline(always)]
pub fn write_command_response_on_msg_buffer(ctx: &mut CommandContext, command_type: CommandType, data_size: u32) {
unsafe {
let mut ipc_buf = get_msg_buffer();
let command_header = ipc_buf as *mut CommandHeader;
ipc_buf = command_header.offset(1) as *mut u8;
let data_word_count = (data_size + 3) / 4;
let has_special_header = ctx.out_params.send_process_id || !ctx.out_params.copy_handles.is_empty() || !ctx.out_params.move_handles.is_empty();
*command_header = CommandHeader::new(command_type as u32, ctx.send_statics.len() as u32, ctx.send_buffers.len() as u32, ctx.receive_buffers.len() as u32, ctx.exchange_buffers.len() as u32, data_word_count, ctx.receive_statics.len() as u32, has_special_header);
if has_special_header {
let special_header = ipc_buf as *mut CommandSpecialHeader;
ipc_buf = special_header.offset(1) as *mut u8;
*special_header = CommandSpecialHeader::new(ctx.out_params.send_process_id, ctx.out_params.copy_handles.len() as u32, ctx.out_params.move_handles.len() as u32);
if ctx.out_params.send_process_id {
ipc_buf = ipc_buf.add(cmem::size_of::<u64>());
}
ipc_buf = write_array_to_buffer(ipc_buf, ctx.out_params.copy_handles.len() as u32, &ctx.out_params.copy_handles);
ipc_buf = write_array_to_buffer(ipc_buf, ctx.out_params.move_handles.len() as u32, &ctx.out_params.move_handles);
}
ipc_buf = write_array_to_buffer(ipc_buf, ctx.send_statics.len() as u32, &ctx.send_statics);
ipc_buf = write_array_to_buffer(ipc_buf, ctx.send_buffers.len() as u32, &ctx.send_buffers);
ipc_buf = write_array_to_buffer(ipc_buf, ctx.receive_buffers.len() as u32, &ctx.receive_buffers);
ipc_buf = write_array_to_buffer(ipc_buf, ctx.exchange_buffers.len() as u32, &ctx.exchange_buffers);
ctx.out_params.data_words_offset = ipc_buf;
ipc_buf = ipc_buf.offset((data_word_count * cmem::size_of::<u32>() as u32) as isize);
write_array_to_buffer(ipc_buf, ctx.receive_statics.len() as u32, &ctx.receive_statics);
}
}
#[inline(always)]
pub fn read_request_command_from_msg_buffer(ctx: &mut CommandContext) -> Result<(u32, DomainCommandType, DomainObjectId)> {
unsafe {
let mut domain_command_type = DomainCommandType::Invalid;
let mut domain_object_id: DomainObjectId = 0;
let ipc_buf = get_msg_buffer();
let mut data_offset = get_aligned_data_offset(ctx.in_params.data_words_offset, ipc_buf);
let mut data_header = data_offset as *mut DataHeader;
if ctx.object_info.is_domain() {
let domain_header = data_offset as *mut DomainInDataHeader;
data_offset = domain_header.offset(1) as *mut u8;
ctx.in_params.data_size -= cmem::size_of::<DomainInDataHeader>() as u32;
domain_command_type = (*domain_header).command_type;
let object_count = (*domain_header).object_count;
domain_object_id = (*domain_header).domain_object_id;
let objects_offset = data_offset.offset((*domain_header).data_size as isize);
read_array_from_buffer(objects_offset, object_count as u32, &mut ctx.in_params.objects);
data_header = data_offset as *mut DataHeader;
}
let mut rq_id: u32 = 0;
if ctx.in_params.data_size >= DATA_PADDING {
ctx.in_params.data_size -= DATA_PADDING;
if ctx.in_params.data_size >= cmem::size_of::<DataHeader>() as u32 {
result_return_unless!((*data_header).magic == IN_DATA_HEADER_MAGIC, super::rc::ResultInvalidInputHeader);
rq_id = (*data_header).value;
data_offset = data_header.offset(1) as *mut u8;
ctx.in_params.data_size -= cmem::size_of::<DataHeader>() as u32;
}
}
ctx.in_params.data_offset = data_offset;
Ok((rq_id, domain_command_type, domain_object_id))
}
}
#[inline(always)]
pub fn write_request_command_response_on_msg_buffer(ctx: &mut CommandContext, result: ResultCode, request_type: CommandType) {
unsafe {
let ipc_buf = get_msg_buffer();
let mut data_size = DATA_PADDING + cmem::size_of::<DataHeader>() as u32 + ctx.out_params.data_size;
if ctx.object_info.is_domain() {
data_size += (cmem::size_of::<DomainOutDataHeader>() + cmem::size_of::<DomainObjectId>() * ctx.out_params.objects.len()) as u32;
}
data_size = (data_size + 1) & !1;
write_command_response_on_msg_buffer(ctx, request_type, data_size);
let mut data_offset = get_aligned_data_offset(ctx.out_params.data_words_offset, ipc_buf);
let mut data_header = data_offset as *mut DataHeader;
if ctx.object_info.is_domain() {
let domain_header = data_offset as *mut DomainOutDataHeader;
data_offset = domain_header.offset(1) as *mut u8;
*domain_header = DomainOutDataHeader::new(ctx.out_params.objects.len() as u32);
let objects_offset = data_offset.add(cmem::size_of::<DataHeader>() + ctx.out_params.data_size as usize);
write_array_to_buffer(objects_offset, ctx.out_params.objects.len() as u32, &ctx.out_params.objects);
data_header = data_offset as *mut DataHeader;
}
data_offset = data_header.offset(1) as *mut u8;
let version: u32 = match request_type {
CommandType::RequestWithContext => 1,
_ => 0
};
*data_header = DataHeader::new(OUT_DATA_HEADER_MAGIC, version, result.get_value(), 0);
ctx.out_params.data_offset = data_offset;
}
}
#[inline(always)]
pub fn read_control_command_from_msg_buffer(ctx: &mut CommandContext) -> Result<ControlRequestId> {
unsafe {
let ipc_buf = get_msg_buffer();
let mut data_offset = get_aligned_data_offset(ctx.in_params.data_words_offset, ipc_buf);
let data_header = data_offset as *mut DataHeader;
data_offset = data_header.offset(1) as *mut u8;
result_return_unless!((*data_header).magic == IN_DATA_HEADER_MAGIC, super::rc::ResultInvalidInputHeader);
let control_rq_id = (*data_header).value;
ctx.in_params.data_offset = data_offset;
ctx.in_params.data_size -= DATA_PADDING + cmem::size_of::<DataHeader>() as u32;
Ok(cmem::transmute(control_rq_id))
}
}
#[inline(always)]
pub fn write_control_command_response_on_msg_buffer(ctx: &mut CommandContext, result: ResultCode, control_type: CommandType) {
unsafe {
let ipc_buf = get_msg_buffer();
let mut data_size = DATA_PADDING + cmem::size_of::<DataHeader>() as u32 + ctx.out_params.data_size;
data_size = (data_size + 1) & !1;
write_command_response_on_msg_buffer(ctx, control_type, data_size);
let mut data_offset = get_aligned_data_offset(ctx.out_params.data_words_offset, ipc_buf);
let data_header = data_offset as *mut DataHeader;
data_offset = data_header.offset(1) as *mut u8;
let version: u32 = match control_type {
CommandType::ControlWithContext => 1,
_ => 0
};
*data_header = DataHeader::new(OUT_DATA_HEADER_MAGIC, version, result.get_value(), 0);
ctx.out_params.data_offset = data_offset;
}
}
#[inline(always)]
pub fn write_close_command_response_on_msg_buffer(ctx: &mut CommandContext) {
write_command_response_on_msg_buffer(ctx, CommandType::Close, 0);
}