Class: Rumai::IXP::Fcall

Inherits:

Object

• Object
• Rumai::IXP::Fcall

Includes:

Struct

Defined in:

lib/rumai/ixp/message.rb,
lib/rumai/ixp/message.rb

Overview

A remote function call (fcall).

Direct Known Subclasses

Rattach, Rauth, Rclunk, Rcreate, Rerror, Rflush, Ropen, Rread, Rremove, Rstat, Rversion, Rwalk, Rwrite, Rwstat, Tattach, Tauth, Tclunk, Tcreate, Terror, Tflush, Topen, Tread, Tremove, Tstat, Tversion, Twalk, Twrite, Twstat

Constant Summary

NOTAG =

(ushort)

BYTE2_MASK

NOFID =

(uint32)

BYTE4_MASK

CLASS_TO_TYPE =

{
  Tversion => 100,
  Rversion => 101,
  Tauth    => 102,
  Rauth    => 103,
  Tattach  => 104,
  Rattach  => 105,
  Terror   => 106,
  Rerror   => 107,
  Tflush   => 108,
  Rflush   => 109,
  Twalk    => 110,
  Rwalk    => 111,
  Topen    => 112,
  Ropen    => 113,
  Tcreate  => 114,
  Rcreate  => 115,
  Tread    => 116,
  Rread    => 117,
  Twrite   => 118,
  Rwrite   => 119,
  Tclunk   => 120,
  Rclunk   => 121,
  Tremove  => 122,
  Rremove  => 123,
  Tstat    => 124,
  Rstat    => 125,
  Twstat   => 126,
  Rwstat   => 127,
}.freeze

TYPE_TO_CLASS =

CLASS_TO_TYPE.invert.freeze

Instance Attribute Summary

Attributes included from Struct

#fields

Class Method Summary

• .__from_9p__ ⇒ Object
• .from_9p(stream) ⇒ Object

  Creates a new instance of this class from the given 9P2000 byte stream and returns the instance.

• .type ⇒ Object

  Returns the value of the ‘type’ field for this fcall.

Instance Method Summary

• #to_9p ⇒ Object

  Transforms this object into a string of 9P2000 bytes.

• #type ⇒ Object

  Returns the value of the ‘type’ field for this fcall.

Methods included from Struct

included, #initialize, #load_9p

Class Method Details

.__from_9p__ ⇒ Object

# File 'lib/rumai/ixp/message.rb', line 409

alias __from_9p__ from_9p

.from_9p(stream) ⇒ Object

Creates a new instance of this class from the given 9P2000 byte stream and returns the instance.

# File 'lib/rumai/ixp/message.rb', line 416

def from_9p stream
  size = stream.read_9p(4)
  type = stream.read_9p(1)

  unless fcall = TYPE_TO_CLASS[type]
    raise Error, "illegal fcall type: #{type}"
  end

  __from_9p__ stream, fcall
end

.type ⇒ Object

Returns the value of the ‘type’ field for this fcall.

# File 'lib/rumai/ixp/message.rb', line 657

def self.type
  CLASS_TO_TYPE[self]
end

Instance Method Details

#to_9p ⇒ Object

Transforms this object into a string of 9P2000 bytes.

# File 'lib/rumai/ixp/message.rb', line 402

def to_9p
  data = type.to_9p(1) << super
  size = (data.bytesize + 4).to_9p(4)
  size << data
end

#type ⇒ Object

Returns the value of the ‘type’ field for this fcall.

# File 'lib/rumai/ixp/message.rb', line 664

def type
  self.class.type
end