// Print d in DB format
func DbFmt(d zx.Dir) string {
var b bytes.Buffer
fmt.Fprintf(&b, "%-14s", d["path"])
typ := d["type"]
if typ == "" {
fmt.Fprintf(&b, " -")
} else {
fmt.Fprintf(&b, " %s", typ)
}
if d["rm"] != "" {
fmt.Fprintf(&b, " GONE")
} else {
fmt.Fprintf(&b, " 0%o", d.Mode())
}
uid := nouid(d["Uid"])
gid := nouid(d["Gid"])
wuid := nouid(d["Wuid"])
fmt.Fprintf(&b, " %-8s %-8s %-8s", uid, gid, wuid)
fmt.Fprintf(&b, " %8d", d.Int64("size"))
if d["type"] != "d" {
fmt.Fprintf(&b, " %d", d.Uint64("mtime"))
}
if d["err"] != "" {
fmt.Fprintf(&b, " %s", d["err"])
}
return b.String()
}
// NB: Attributes that the user can't set are always ignored.
// If the user has no permissioin to set an attribute, that's an error.
// Setting an attribute to an empty string removes it.
// Uid, Gid, and Wuid can't be removed.
// Meta locking done by caller, might lock data on truncations
func (f *mFile) wstat(d zx.Dir) error {
if len(d) == 0 {
return nil
}
d = d.Dup()
sum := ""
if f.d["type"] != "d" {
if _, ok := d["size"]; ok {
sz := d.Int64("size")
if sz < 0 {
sz = 0
}
f.data.Truncate(sz)
d["size"] = strconv.FormatInt(sz, 10)
if DoSum {
sum = f.data.Sum()
}
}
} else {
delete(d, "size")
}
if _, ok := d["mode"]; ok {
mode := d.Int("mode")&0777
d["mode"] = "0" + strconv.FormatInt(int64(mode), 8)
}
if _, ok := d["mtime"]; ok {
d.SetTime("mtime", d.Time("mtime"))
}
if sum != "" {
f.d["Sum"] = sum
}
ud := d.UsrAttrs()
if d["Wuid"] != "" {
ud["Wuid"] = d["Wuid"]
}
for k, v := range ud {
if v == "" {
delete(f.d, k)
} else {
f.d[k] = v
}
}
return nil
}
func dataChanged(d0, d1 zx.Dir) bool {
return d0["type"] != d1["type"] ||
d0.Int64("size") != d1.Int64("size") ||
d0.Int64("mtime") != d1.Int64("mtime") ||
d0["Sum"] != "" && d1["Sum"] != "" && d0["Sum"] != d1["Sum"]
}
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
}