1 269e4d4b 2015-11-05 stephen.d package p9pnew
  2 269e4d4b 2015-11-05 stephen.d 
  3 269e4d4b 2015-11-05 stephen.d import "fmt"
  4 269e4d4b 2015-11-05 stephen.d 
  5 269e4d4b 2015-11-05 stephen.d // Message represents the target of an fcall.
  6 f9cc2426 2015-11-05 stephen.d type Message interface {
  7 f9cc2426 2015-11-05 stephen.d 	// Type returns the type of call for the target message.
  8 f9cc2426 2015-11-05 stephen.d 	Type() FcallType
  9 f9cc2426 2015-11-05 stephen.d }
 10 269e4d4b 2015-11-05 stephen.d 
 11 269e4d4b 2015-11-05 stephen.d // newMessage returns a new instance of the message based on the Fcall type.
 12 269e4d4b 2015-11-05 stephen.d func newMessage(typ FcallType) (Message, error) {
 13 269e4d4b 2015-11-05 stephen.d 	switch typ {
 14 269e4d4b 2015-11-05 stephen.d 	case Tversion:
 15 269e4d4b 2015-11-05 stephen.d 		return MessageTversion{}, nil
 16 269e4d4b 2015-11-05 stephen.d 	case Rversion:
 17 269e4d4b 2015-11-05 stephen.d 		return MessageRversion{}, nil
 18 269e4d4b 2015-11-05 stephen.d 	case Tauth:
 19 269e4d4b 2015-11-05 stephen.d 		return MessageTauth{}, nil
 20 269e4d4b 2015-11-05 stephen.d 	case Rauth:
 21 269e4d4b 2015-11-05 stephen.d 		return MessageRauth{}, nil
 22 269e4d4b 2015-11-05 stephen.d 	case Tattach:
 23 269e4d4b 2015-11-05 stephen.d 		return MessageTattach{}, nil
 24 269e4d4b 2015-11-05 stephen.d 	case Rattach:
 25 269e4d4b 2015-11-05 stephen.d 		return MessageRattach{}, nil
 26 269e4d4b 2015-11-05 stephen.d 	case Rerror:
 27 269e4d4b 2015-11-05 stephen.d 		return MessageRerror{}, nil
 28 269e4d4b 2015-11-05 stephen.d 	case Tflush:
 29 269e4d4b 2015-11-05 stephen.d 		return MessageTflush{}, nil
 30 269e4d4b 2015-11-05 stephen.d 	case Rflush:
 31 269e4d4b 2015-11-05 stephen.d 		return MessageRflush{}, nil // No message body for this response.
 32 269e4d4b 2015-11-05 stephen.d 	case Twalk:
 33 269e4d4b 2015-11-05 stephen.d 		return MessageTwalk{}, nil
 34 269e4d4b 2015-11-05 stephen.d 	case Rwalk:
 35 269e4d4b 2015-11-05 stephen.d 		return MessageRwalk{}, nil
 36 269e4d4b 2015-11-05 stephen.d 	case Topen:
 37 269e4d4b 2015-11-05 stephen.d 		return MessageTopen{}, nil
 38 269e4d4b 2015-11-05 stephen.d 	case Ropen:
 39 269e4d4b 2015-11-05 stephen.d 		return MessageRopen{}, nil
 40 269e4d4b 2015-11-05 stephen.d 	case Tcreate:
 41 269e4d4b 2015-11-05 stephen.d 		return MessageTcreate{}, nil
 42 269e4d4b 2015-11-05 stephen.d 	case Rcreate:
 43 269e4d4b 2015-11-05 stephen.d 		return MessageRcreate{}, nil
 44 269e4d4b 2015-11-05 stephen.d 	case Tread:
 45 269e4d4b 2015-11-05 stephen.d 		return MessageTread{}, nil
 46 269e4d4b 2015-11-05 stephen.d 	case Rread:
 47 269e4d4b 2015-11-05 stephen.d 		return MessageRread{}, nil
 48 269e4d4b 2015-11-05 stephen.d 	case Twrite:
 49 269e4d4b 2015-11-05 stephen.d 		return MessageTwrite{}, nil
 50 269e4d4b 2015-11-05 stephen.d 	case Rwrite:
 51 269e4d4b 2015-11-05 stephen.d 		return MessageRwrite{}, nil
 52 269e4d4b 2015-11-05 stephen.d 	case Tclunk:
 53 269e4d4b 2015-11-05 stephen.d 		return MessageTclunk{}, nil
 54 269e4d4b 2015-11-05 stephen.d 	case Rclunk:
 55 269e4d4b 2015-11-05 stephen.d 		return MessageRclunk{}, nil // no response body
 56 269e4d4b 2015-11-05 stephen.d 	case Tremove:
 57 269e4d4b 2015-11-05 stephen.d 		return MessageTremove{}, nil
 58 269e4d4b 2015-11-05 stephen.d 	case Rremove:
 59 269e4d4b 2015-11-05 stephen.d 		return MessageRremove{}, nil
 60 269e4d4b 2015-11-05 stephen.d 	case Tstat:
 61 269e4d4b 2015-11-05 stephen.d 		return MessageTstat{}, nil
 62 269e4d4b 2015-11-05 stephen.d 	case Rstat:
 63 269e4d4b 2015-11-05 stephen.d 		return MessageRstat{}, nil
 64 269e4d4b 2015-11-05 stephen.d 	case Twstat:
 65 269e4d4b 2015-11-05 stephen.d 		return MessageTwstat{}, nil
 66 269e4d4b 2015-11-05 stephen.d 	case Rwstat:
 67 269e4d4b 2015-11-05 stephen.d 		return MessageRwstat{}, nil
 68 269e4d4b 2015-11-05 stephen.d 	}
 69 269e4d4b 2015-11-05 stephen.d 
 70 269e4d4b 2015-11-05 stephen.d 	return nil, fmt.Errorf("unknown message type")
 71 269e4d4b 2015-11-05 stephen.d }
 72 269e4d4b 2015-11-05 stephen.d 
 73 269e4d4b 2015-11-05 stephen.d // MessageVersion encodes the message body for Tversion and Rversion RPC
 74 269e4d4b 2015-11-05 stephen.d // calls. The body is identical in both directions.
 75 269e4d4b 2015-11-05 stephen.d type MessageTversion struct {
 76 269e4d4b 2015-11-05 stephen.d 	MSize   uint32
 77 269e4d4b 2015-11-05 stephen.d 	Version string
 78 269e4d4b 2015-11-05 stephen.d }
 79 269e4d4b 2015-11-05 stephen.d 
 80 269e4d4b 2015-11-05 stephen.d type MessageRversion struct {
 81 269e4d4b 2015-11-05 stephen.d 	MSize   uint32
 82 269e4d4b 2015-11-05 stephen.d 	Version string
 83 269e4d4b 2015-11-05 stephen.d }
 84 269e4d4b 2015-11-05 stephen.d 
 85 269e4d4b 2015-11-05 stephen.d type MessageTauth struct {
 86 269e4d4b 2015-11-05 stephen.d 	Afid  Fid
 87 269e4d4b 2015-11-05 stephen.d 	Uname string
 88 269e4d4b 2015-11-05 stephen.d 	Aname string
 89 269e4d4b 2015-11-05 stephen.d }
 90 269e4d4b 2015-11-05 stephen.d 
 91 269e4d4b 2015-11-05 stephen.d type MessageRauth struct {
 92 269e4d4b 2015-11-05 stephen.d 	Qid Qid
 93 269e4d4b 2015-11-05 stephen.d }
 94 269e4d4b 2015-11-05 stephen.d 
 95 269e4d4b 2015-11-05 stephen.d type MessageTflush struct {
 96 269e4d4b 2015-11-05 stephen.d 	Oldtag Tag
 97 269e4d4b 2015-11-05 stephen.d }
 98 269e4d4b 2015-11-05 stephen.d 
 99 269e4d4b 2015-11-05 stephen.d type MessageRflush struct{}
100 269e4d4b 2015-11-05 stephen.d 
101 269e4d4b 2015-11-05 stephen.d type MessageTattach struct {
102 269e4d4b 2015-11-05 stephen.d 	Fid   Fid
103 269e4d4b 2015-11-05 stephen.d 	Afid  Fid
104 269e4d4b 2015-11-05 stephen.d 	Uname string
105 269e4d4b 2015-11-05 stephen.d 	Aname string
106 269e4d4b 2015-11-05 stephen.d }
107 269e4d4b 2015-11-05 stephen.d 
108 269e4d4b 2015-11-05 stephen.d type MessageRattach struct {
109 269e4d4b 2015-11-05 stephen.d 	Qid Qid
110 269e4d4b 2015-11-05 stephen.d }
111 269e4d4b 2015-11-05 stephen.d 
112 269e4d4b 2015-11-05 stephen.d type MessageTwalk struct {
113 269e4d4b 2015-11-05 stephen.d 	Fid    Fid
114 269e4d4b 2015-11-05 stephen.d 	Newfid Fid
115 269e4d4b 2015-11-05 stephen.d 	Wnames []string
116 269e4d4b 2015-11-05 stephen.d }
117 269e4d4b 2015-11-05 stephen.d 
118 269e4d4b 2015-11-05 stephen.d type MessageRwalk struct {
119 269e4d4b 2015-11-05 stephen.d 	Qids []Qid
120 269e4d4b 2015-11-05 stephen.d }
121 269e4d4b 2015-11-05 stephen.d 
122 269e4d4b 2015-11-05 stephen.d type MessageTopen struct {
123 269e4d4b 2015-11-05 stephen.d 	Fid  Fid
124 deb98ab4 2015-11-05 stephen.d 	Mode Flag
125 269e4d4b 2015-11-05 stephen.d }
126 269e4d4b 2015-11-05 stephen.d 
127 269e4d4b 2015-11-05 stephen.d type MessageRopen struct {
128 269e4d4b 2015-11-05 stephen.d 	Qid    Qid
129 269e4d4b 2015-11-05 stephen.d 	IOUnit uint32
130 269e4d4b 2015-11-05 stephen.d }
131 269e4d4b 2015-11-05 stephen.d 
132 269e4d4b 2015-11-05 stephen.d type MessageTcreate struct {
133 269e4d4b 2015-11-05 stephen.d 	Fid  Fid
134 269e4d4b 2015-11-05 stephen.d 	Name string
135 269e4d4b 2015-11-05 stephen.d 	Perm uint32
136 deb98ab4 2015-11-05 stephen.d 	Mode Flag
137 269e4d4b 2015-11-05 stephen.d }
138 269e4d4b 2015-11-05 stephen.d 
139 269e4d4b 2015-11-05 stephen.d type MessageRcreate struct {
140 269e4d4b 2015-11-05 stephen.d 	Qid    Qid
141 269e4d4b 2015-11-05 stephen.d 	IOUnit uint32
142 269e4d4b 2015-11-05 stephen.d }
143 269e4d4b 2015-11-05 stephen.d 
144 269e4d4b 2015-11-05 stephen.d type MessageTread struct {
145 269e4d4b 2015-11-05 stephen.d 	Fid    Fid
146 269e4d4b 2015-11-05 stephen.d 	Offset uint64
147 269e4d4b 2015-11-05 stephen.d 	Count  uint32
148 269e4d4b 2015-11-05 stephen.d }
149 269e4d4b 2015-11-05 stephen.d 
150 269e4d4b 2015-11-05 stephen.d type MessageRread struct {
151 269e4d4b 2015-11-05 stephen.d 	Data []byte
152 269e4d4b 2015-11-05 stephen.d }
153 269e4d4b 2015-11-05 stephen.d 
154 269e4d4b 2015-11-05 stephen.d type MessageTwrite struct {
155 269e4d4b 2015-11-05 stephen.d 	Fid    Fid
156 269e4d4b 2015-11-05 stephen.d 	Offset uint64
157 269e4d4b 2015-11-05 stephen.d 	Data   []byte
158 269e4d4b 2015-11-05 stephen.d }
159 269e4d4b 2015-11-05 stephen.d 
160 269e4d4b 2015-11-05 stephen.d type MessageRwrite struct {
161 269e4d4b 2015-11-05 stephen.d 	Count uint32
162 269e4d4b 2015-11-05 stephen.d }
163 269e4d4b 2015-11-05 stephen.d 
164 269e4d4b 2015-11-05 stephen.d type MessageTclunk struct {
165 269e4d4b 2015-11-05 stephen.d 	Fid Fid
166 269e4d4b 2015-11-05 stephen.d }
167 269e4d4b 2015-11-05 stephen.d 
168 269e4d4b 2015-11-05 stephen.d type MessageRclunk struct{}
169 269e4d4b 2015-11-05 stephen.d 
170 269e4d4b 2015-11-05 stephen.d type MessageTremove struct {
171 269e4d4b 2015-11-05 stephen.d 	Fid Fid
172 269e4d4b 2015-11-05 stephen.d }
173 269e4d4b 2015-11-05 stephen.d 
174 269e4d4b 2015-11-05 stephen.d type MessageRremove struct{}
175 269e4d4b 2015-11-05 stephen.d 
176 269e4d4b 2015-11-05 stephen.d type MessageTstat struct {
177 269e4d4b 2015-11-05 stephen.d 	Fid Fid
178 269e4d4b 2015-11-05 stephen.d }
179 269e4d4b 2015-11-05 stephen.d 
180 269e4d4b 2015-11-05 stephen.d type MessageRstat struct {
181 269e4d4b 2015-11-05 stephen.d 	Stat Dir
182 269e4d4b 2015-11-05 stephen.d }
183 269e4d4b 2015-11-05 stephen.d 
184 269e4d4b 2015-11-05 stephen.d type MessageTwstat struct {
185 269e4d4b 2015-11-05 stephen.d 	Fid  Fid
186 269e4d4b 2015-11-05 stephen.d 	Stat Dir
187 269e4d4b 2015-11-05 stephen.d }
188 269e4d4b 2015-11-05 stephen.d 
189 269e4d4b 2015-11-05 stephen.d type MessageRwstat struct{}
190 f9cc2426 2015-11-05 stephen.d 
191 f9cc2426 2015-11-05 stephen.d func (MessageTversion) Type() FcallType { return Tversion }
192 f9cc2426 2015-11-05 stephen.d func (MessageRversion) Type() FcallType { return Rversion }
193 f9cc2426 2015-11-05 stephen.d func (MessageTauth) Type() FcallType    { return Tauth }
194 f9cc2426 2015-11-05 stephen.d func (MessageRauth) Type() FcallType    { return Rauth }
195 f9cc2426 2015-11-05 stephen.d func (MessageTflush) Type() FcallType   { return Tflush }
196 f9cc2426 2015-11-05 stephen.d func (MessageRflush) Type() FcallType   { return Rflush }
197 f9cc2426 2015-11-05 stephen.d func (MessageTattach) Type() FcallType  { return Tattach }
198 f9cc2426 2015-11-05 stephen.d func (MessageRattach) Type() FcallType  { return Rattach }
199 f9cc2426 2015-11-05 stephen.d func (MessageTwalk) Type() FcallType    { return Twalk }
200 f9cc2426 2015-11-05 stephen.d func (MessageRwalk) Type() FcallType    { return Rwalk }
201 f9cc2426 2015-11-05 stephen.d func (MessageTopen) Type() FcallType    { return Topen }
202 f9cc2426 2015-11-05 stephen.d func (MessageRopen) Type() FcallType    { return Ropen }
203 f9cc2426 2015-11-05 stephen.d func (MessageTcreate) Type() FcallType  { return Tcreate }
204 f9cc2426 2015-11-05 stephen.d func (MessageRcreate) Type() FcallType  { return Rcreate }
205 f9cc2426 2015-11-05 stephen.d func (MessageTread) Type() FcallType    { return Tread }
206 f9cc2426 2015-11-05 stephen.d func (MessageRread) Type() FcallType    { return Rread }
207 f9cc2426 2015-11-05 stephen.d func (MessageTwrite) Type() FcallType   { return Twrite }
208 f9cc2426 2015-11-05 stephen.d func (MessageRwrite) Type() FcallType   { return Rwrite }
209 f9cc2426 2015-11-05 stephen.d func (MessageTclunk) Type() FcallType   { return Tclunk }
210 f9cc2426 2015-11-05 stephen.d func (MessageRclunk) Type() FcallType   { return Rclunk }
211 f9cc2426 2015-11-05 stephen.d func (MessageTremove) Type() FcallType  { return Tremove }
212 f9cc2426 2015-11-05 stephen.d func (MessageRremove) Type() FcallType  { return Rremove }
213 f9cc2426 2015-11-05 stephen.d func (MessageTstat) Type() FcallType    { return Tstat }
214 f9cc2426 2015-11-05 stephen.d func (MessageRstat) Type() FcallType    { return Rstat }
215 f9cc2426 2015-11-05 stephen.d func (MessageTwstat) Type() FcallType   { return Twstat }
216 f9cc2426 2015-11-05 stephen.d func (MessageRwstat) Type() FcallType   { return Rwstat }