private int HandleWriteRead(Thread current, UserPtr userBwr, ref Arch.ExceptionRegisters pt_regs)
{
var bwr = new binder_write_read();
if (userBwr.Read(current, out bwr) != 0)
{
return(-ErrorCode.EFAULT);
}
if (bwr.write_size > 0 || bwr.read_size > 0)
{
var ret = HandleWriteRead(current, ref pt_regs, userBwr, bwr);
if (ret < 0)
{
bwr.read_consumed = 0;
if (userBwr.Write(current, ref bwr) != 0)
{
return(-ErrorCode.EFAULT);
}
}
}
if (userBwr.Write(current, ref bwr) != 0)
{
return(-ErrorCode.EFAULT);
}
return(0);
}
internal int Ioctl(Thread current, ref Arch.ExceptionRegisters pt_regs, uint cmd, UserPtr userBuf)
{
switch (cmd)
{
case BINDER_WRITE_READ:
return(HandleWriteRead(current, userBuf, ref pt_regs));
case BINDER_VERSION:
if (userBuf.Write(current, BINDER_CURRENT_PROTOCOL_VERSION) != 0)
{
return(-ErrorCode.EINVAL);
}
return(0);
case BINDER_SET_IDLE_TIMEOUT:
case BINDER_SET_MAX_THREADS:
case BINDER_SET_IDLE_PRIORITY:
case BINDER_SET_CONTEXT_MGR:
case BINDER_THREAD_EXIT:
// skipping
return(0);
default:
return(-ErrorCode.EINVAL);
}
}
public int ArchFStat64(Thread current, UserPtr buf)
{
var ret = IPCStubs.linux_sys_fstat64(current.Parent.helperPid, Fd);
if (ret < 0)
return ret;
if (buf.Write(current, new Pointer(Globals.LinuxIPCBuffer.Location), GenericINode.SIZE_OF_STAT64) != 0)
return -ErrorCode.EFAULT;
return 0;
}
public int ArchFStat64(Thread current, UserPtr buf)
{
var ret = IPCStubs.linux_sys_fstat64(current.Parent.helperPid, Fd);
if (ret < 0)
{
return(ret);
}
if (buf.Write(current, new Pointer(Globals.LinuxIPCBuffer.Location), GenericINode.SIZE_OF_STAT64) != 0)
{
return(-ErrorCode.EFAULT);
}
return(0);
}
private int HandleWriteRead(Thread current, UserPtr userBwr, ref Arch.ExceptionRegisters pt_regs)
{
var bwr = new binder_write_read();
if (userBwr.Read(current, out bwr) != 0)
return -ErrorCode.EFAULT;
if (bwr.write_size > 0 || bwr.read_size > 0)
{
var ret = HandleWriteRead(current, ref pt_regs, userBwr, bwr);
if (ret < 0)
{
bwr.read_consumed = 0;
if (userBwr.Write(current, ref bwr) != 0)
return -ErrorCode.EFAULT;
}
}
if (userBwr.Write(current, ref bwr) != 0)
return -ErrorCode.EFAULT;
return 0;
}
internal int Ioctl(Thread current, ref Arch.ExceptionRegisters pt_regs, uint cmd, UserPtr userBuf)
{
switch (cmd)
{
case BINDER_WRITE_READ:
return HandleWriteRead(current, userBuf, ref pt_regs);
case BINDER_VERSION:
if (userBuf.Write(current, BINDER_CURRENT_PROTOCOL_VERSION) != 0)
return -ErrorCode.EINVAL;
return 0;
case BINDER_SET_IDLE_TIMEOUT:
case BINDER_SET_MAX_THREADS:
case BINDER_SET_IDLE_PRIORITY:
case BINDER_SET_CONTEXT_MGR:
case BINDER_THREAD_EXIT:
// skipping
return 0;
default:
return -ErrorCode.EINVAL;
}
}
private int LinuxIoctl(Thread current, uint cmd, UserPtr arg1)
{
var msg_buf = Globals.LinuxIPCBuffer;
int ret = 0;
// marshal arguments
switch (cmd)
{
case FileSystem.FIONREAD:
break;
default:
return -ErrorCode.ENOTTY;
}
ret = Arch.IPCStubs.linux_sys_vfs_linux_ioctl(current.Parent.helperPid, LinuxFd, cmd, arg1.Value.ToInt32());
if (ret < 0)
return ret;
// unmarshal if necessary
if (cmd == FileSystem.FIONREAD)
{
if (arg1.Write(current, new Pointer(msg_buf.Location), sizeof(int)) != 0)
return -ErrorCode.EFAULT;
}
return ret;
}