func (t *Fs) put(rid string, d zx.Dir, off int64, dc <-chan []byte, pred string) (zx.Dir, int64, int64, error) {
noinherit := false
if m := d["Mode"]; m != "" {
d["mode"] = m
delete(d, "Mode")
noinherit = true
}
var pf *mFile
f, left, err := t.walk(rid, &pf)
if err != nil && !dbg.IsNotExist(err) || len(left) > 1|| d["mode"] == "" && err != nil {
return nil, 0, 0, err
}
pmode := uint64(0755)
if pf != nil {
pf.mlk.Lock()
pmode = pf.d.Mode()
pf.mlk.Unlock()
}
app := false
f.mlk.Lock()
if err == nil && f.d["type"] == "d" || d["type"] == "d" {
err = fmt.Errorf("%s: %s", f, dbg.ErrIsDir)
f.mlk.Unlock()
return nil, 0, 0, err
}
if !t.noPerms() && !f.d.CanWrite(t.ai) {
err = fmt.Errorf("%s: %s", f, dbg.ErrPerm)
f.mlk.Unlock()
return nil, 0, 0, err
}
u := dbg.Usr
if t.ai != nil {
u = t.ai.Uid
}
if d == nil {
d = zx.Dir{}
}
ai := t.ai
if t.NoPermCheck {
ai = nil
}
if d["mode"] == "" || err == nil { // truncate or rewrite
if err := t.matchDir(rid, f.d, pred); err != nil {
f.mlk.Unlock()
return nil, 0, 0, err
}
if !t.WstatAll || t.ai != nil {
if err := f.d.CanWstat(ai, d); err != nil {
f.mlk.Unlock()
return nil, 0, 0, err
}
}
} else {
if err := t.matchDir(rid, nil, pred); err != nil {
f.mlk.Unlock()
return nil, 0, 0, err
}
}
if d["mode"] == "" {
if off < 0 {
off = 0
app = true
}
if t.WstatAll && t.ai == nil && d["Wuid"] != "" {
f.d["Wuid"] = d["Wuid"]
} else {
f.d["Wuid"] = u
}
if d["size"] != "" {
f.data.Truncate(d.Int64("size"))
f.d["size"] = strconv.FormatInt(int64(f.data.Len()), 10)
}
} else if err == nil {
// truncate existing file
if !noinherit && (!t.WstatAll || t.ai != nil) {
d.Inherit(pmode)
}
f.data.Truncate(d.Int64("size"))
f.d["size"] = strconv.FormatInt(int64(f.data.Len()), 10)
if t.WstatAll && t.ai == nil && d["Wuid"] != "" {
f.d["Wuid"] = d["Wuid"]
} else {
f.d["Wuid"] = u
}
} else {
// create a new file
nf := &mFile {
name: left[0],
d: zx.Dir{
"mode": d["mode"],
"name": left[0],
"path": rid,
"spath": rid,
"tpath": f.d["tpath"],
"Uid": u,
"Gid": f.d["Gid"],
"Wuid": u,
"type": "-",
"size": "0",
"proto": "proc",
},
data: &bufs.Blocks{Mutex: &sync.Mutex{}},
t: t,
}
if !t.WstatAll || t.ai != nil {
if !noinherit {
nf.d.Inherit(pmode)
d["mode"] = nf.d["mode"]
}
if err := f.d.CanWstat(ai, d); err != nil {
f.mlk.Unlock()
return nil, 0, 0, err
}
} else if d["Wuid"] != "" {
f.d["Wuid"] = d["Wuid"]
}
nf.data.Truncate(d.Int64("size"))
nf.d["size"] = strconv.FormatInt(int64(nf.data.Len()), 10)
f.clk.Lock()
f.attach(nf)
f.clk.Unlock()
f.mlk.Unlock()
f = nf
f.mlk.Lock()
}
if app {
off = int64(f.data.Len())
}
delete(d, "size")
f.wstat(d.UsrAttrs())
f.mlk.Unlock()
n, err := f.data.RecvAtFrom(off, dc)
f.mlk.Lock()
defer f.mlk.Unlock()
if DoSum {
sum := f.data.Sum()
f.d["Sum"] = sum
}
size := f.data.Len()
f.d["size"] = strconv.Itoa(size)
if d["mtime"] == "" {
f.d.SetTime("mtime", time.Now())
}
return f.d.Dup(), 1, int64(n), err
}