func (k *Clone) Read(fid *srv.FFid, buf []byte, offset uint64) (int, error) {
var err error
// we only allow a single read from us, change the offset and we're done
if offset > uint64(0) {
return 0, nil
}
user := p.OsUsers.Uid2User(os.Geteuid())
k.clones++
name := strconv.Itoa(k.clones)
f := new(srv.File)
err = f.Add(root, name, user, nil, p.DMDIR|0777, f)
if err != nil {
return 0, &p.Error{"can not create dir", 0}
}
ctl := new(CtlFile)
ctl.datafile = make([]byte, 0)
err = ctl.Add(f, "ctl", user, nil, 0777, ctl)
if err != nil {
return 0, &p.Error{"cannot create ctl file", 0}
}
b := []byte(name)
if len(buf) < len(b) {
f.Remove()
return 0, &p.Error{"not enough buffer space for result", 0}
}
copy(buf, b)
return len(b), nil
}
func (cl *Clone) Read(fid *srv.FFid, buf []byte, offset uint64) (int, error) {
var err error
var dir *srv.File
var ctl *ClientCtl
var body *ClientBody
var parsed *srv.File
var outb []byte
// we only allow a single read from us, change the offset and we're done
if offset > uint64(0) {
return 0, nil
}
id := fmt.Sprintf("%d", cl.clones)
client := new(HttpClient)
client.id = cl.clones
client.req = &http.Request{
Method: "GET",
Proto: "HTTP/1.1",
ProtoMajor: 1,
ProtoMinor: 1,
Header: make(http.Header),
}
// web/0
dir = new(srv.File)
if p9err := dir.Add(root, id, user, user, p.DMDIR|0555, nil); p9err != nil {
err = fmt.Errorf("clone: can't add client dir: %s", p9err)
goto remove
}
client.dir = dir
// web/0/ctl
ctl = new(ClientCtl)
if p9err := ctl.Add(dir, "ctl", user, user, 0666, ctl); p9err != nil {
err = fmt.Errorf("clone: can't make ctl: %s", p9err)
goto remove
}
ctl.c = client
// web/0/body
body = new(ClientBody)
if p9err := body.Add(dir, "body", user, user, 0444, body); p9err != nil {
err = fmt.Errorf("clone: can't make body: %s", p9err)
goto remove
}
body.c = client
// web/0/parsed/
parsed = new(srv.File)
if p9err := parsed.Add(dir, "parsed", user, user, p.DMDIR|0555, nil); p9err != nil {
err = fmt.Errorf("clone: can't add parsed dir: %s", p9err)
goto remove
}
for ptype, fname := range parsedtab {
pfile := &ParsedFile{ptype: ptype, c: client}
if p9err := pfile.Add(parsed, fname, user, user, 0444, pfile); p9err != nil {
err = fmt.Errorf("clone: can't add parsed file %s: %s", p9err)
goto remove
}
}
outb = []byte(id + "\n")
if len(buf) < len(outb) {
err = fmt.Errorf("not enough buffer space for result")
goto remove
}
fid.F = &ctl.File
cl.clones++
copy(buf, outb)
return len(outb), nil
remove:
if dir != nil {
dir.Remove()
}
return 0, err
}