private int HandleWriteRead(Thread current, ref Arch.ExceptionRegisters regs, UserPtr userBwr, binder_write_read bwr)
{
var writeBuf = bwr.write_buffer;
var writeSize = bwr.write_size;
var buf = Globals.AllocateAlignedCompletionBuffer(MARSHAL_BUF_PAGES * Arch.ArchDefinition.PageSize);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
var marshaler = new BinderIPCMarshaler(current, buf);
if (bwr.write_consumed != 0)
{
Arch.Console.WriteLine("BinderINode::HandleWriteRead: write_consumed != 0");
Utils.Panic();
}
var r = marshaler.Marshal(writeBuf, writeSize);
if (r < 0)
{
Arch.Console.WriteLine("Marshaling error");
Globals.CompletionQueueAllocator.FreePages(new Pointer(buf.Location), MARSHAL_BUF_PAGES);
return(-1);
}
sys_binder_write_desc desc;
desc.buffer_size = marshaler.WriteCursor;
desc.bwr_write_size = writeSize;
desc.write_buffer = new Pointer(buf.Location);
desc.patch_table_entries = marshaler.CurrentPatchEntry;
desc.patch_table_offset = marshaler.PatchTableOffset;
desc.read_consumed = 0;
desc.write_consumed = 0;
var binder_cp = new BinderCompletion(current, userBwr, desc, buf);
r = Arch.IPCStubs.linux_sys_binder_write_read_async(current.Parent.helperPid, current.impl._value.thread._value, desc);
if (r < 0)
{
binder_cp.Dispose();
return(r);
}
Globals.CompletionQueue.Enqueue(binder_cp);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
internal int ArchWrite(Thread current, ref ExceptionRegisters regs, ref ByteBufferRef buf, int len, uint pos, File file)
{
if (!Globals.CompletionQueueAllocator.Contains(buf))
{
Arch.Console.WriteLine("inode-write: unimplemented");
Arch.ArchDefinition.Panic();
}
var iocp = IOCompletion.CreateWriteIOCP(current, file, buf);
var r = IPCStubs.WriteAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), fd, len, pos);
if (r < 0)
{
iocp.Dispose();
return(r);
}
Globals.CompletionQueue.Enqueue(iocp);
current.SaveState(ref regs);
current.AsyncReturn = true;
// Take the buffer
buf = ByteBufferRef.Empty;
return(0);
}
internal int ArchRead(Thread current, ref ExceptionRegisters regs, UserPtr userBuf, int len, uint pos, File file)
{
var buf = Globals.AllocateAlignedCompletionBuffer(len);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
var iocp = IOCompletion.CreateReadIOCP(current, userBuf, len, file, buf);
var r = IPCStubs.ReadAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), fd, len, pos);
if (r < 0)
{
iocp.Dispose();
return(r);
}
Globals.CompletionQueue.Enqueue(iocp);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
private int HandleWriteRead(Thread current, ref Arch.ExceptionRegisters regs, UserPtr userBwr, binder_write_read bwr)
{
var writeBuf = bwr.write_buffer;
var writeSize = bwr.write_size;
var buf = Globals.AllocateAlignedCompletionBuffer(MARSHAL_BUF_PAGES * Arch.ArchDefinition.PageSize);
if (!buf.isValid)
return -ErrorCode.ENOMEM;
var marshaler = new BinderIPCMarshaler(current, buf);
if (bwr.write_consumed != 0)
{
Arch.Console.WriteLine("BinderINode::HandleWriteRead: write_consumed != 0");
Utils.Panic();
}
var r = marshaler.Marshal(writeBuf, writeSize);
if (r < 0)
{
Arch.Console.WriteLine("Marshaling error");
Globals.CompletionQueueAllocator.FreePages(new Pointer(buf.Location), MARSHAL_BUF_PAGES);
return -1;
}
sys_binder_write_desc desc;
desc.buffer_size = marshaler.WriteCursor;
desc.bwr_write_size = writeSize;
desc.write_buffer = new Pointer(buf.Location);
desc.patch_table_entries = marshaler.CurrentPatchEntry;
desc.patch_table_offset = marshaler.PatchTableOffset;
desc.read_consumed = 0;
desc.write_consumed = 0;
var binder_cp = new BinderCompletion(current, userBwr, desc, buf);
r = Arch.IPCStubs.linux_sys_binder_write_read_async(current.Parent.helperPid, current.impl._value.thread._value, desc);
if (r < 0)
{
binder_cp.Dispose();
return r;
}
Globals.CompletionQueue.Enqueue(binder_cp);
current.SaveState(ref regs);
current.AsyncReturn = true;
return 0;
}
