Exemplo n.º 1
0
func (t *Fs) remove(rid string, all bool, cs *zx.CallStat) chan error {
	c := make(chan error, 1)
	rid, err := zx.AbsPath(rid)
	if rid=="/Ctl" || rid == "/" {
		t.dprintf("remove %s: %s\n", rid, dbg.ErrPerm)
		err := fmt.Errorf("%s: %s", rid, dbg.ErrPerm)
		c <- err
		close(c, err)
		cs.End(true)
		return c
	}
	f, _, err := t.walk(rid, nil)
	if f != nil {
		f.mlk.Lock()
	}
	if err == nil && !all && f.d["type"] == "d" && len(f.child) > 0 {
		err = errors.New("directory is not empty")
	}
	if err == nil && !t.noPerms() && !f.d.CanWrite(t.ai) {
		err = dbg.ErrPerm
	}
	if f != nil {
		if err == nil {
			f.d["rm"] = "y"
		}
		f.mlk.Unlock()
	}
	if err != nil {
		t.dprintf("remove %s: %s\n", rid, err)
		c <- err
		close(c, err)
		cs.End(true)
		return c
	}
	t.detach(f)
	t.dprintf("remove %s: ok\n", rid)
	close(c)
	cs.End(false)
	return c
}
Exemplo n.º 2
0
func (t *Rfs) getrpc(rid string, msg *Msg) <-chan []byte {
	t.c.Debug = t.Dbg && VerbDebug
	c := make(chan []byte, 10)
	go func() {
		reqc, repc := t.c.Rpc()
		raw := msg.Pack()
		cs := t.IOstats.NewCallSize(zx.Sget, len(raw))
		reqc <- raw
		close(reqc)
		some := false
		for rep := range repc {
			cs.Send(int64(len(rep)))
			if ok := c <- rep; !ok {
				close(repc, cerror(c))
				break
			}
			some = true
			t.dprintf("get %s: ok\n", rid)
		}
		if !some {
			c <- nil
		}
		err := cerror(repc)
		cs.End(err != nil)
		if err != nil {
			if isHangup(err) {
				t.Close(ErrHangUp)
			}
			t.dprintf("get %s: %s\n", rid, err)
		} else {
			t.dprintf("get %s: ok\n", rid)
		}
		close(c, err)
	}()
	return c
}

func (t *Rfs) Get(rid string, off, count int64, pred string) <-chan []byte {
	t.dprintf("get %s %d %d %q\n", rid, off, count, pred)
	msg := &Msg{Op: Tget, Rid: rid, Off: off, Count: count, Pred: pred}
	return t.getrpc(rid, msg)
}

func (t *Rfs) putrpc(rid string, msg *Msg, dc <-chan []byte) chan zx.Dir {
	t.c.Debug = t.Dbg && VerbDebug
	c := make(chan zx.Dir, 1)
	go func() {
		reqc, repc := t.c.Rpc()
		raw := msg.Pack()
		cs := t.IOstats.NewCallSize(zx.Sput, len(raw))
		reqc <- raw
		nm := 0
		tot := 0
		for m := range dc {
			nm++
			cs.Recv(int64(len(m)))
			if ok := reqc <- m; !ok {
				err := cerror(reqc)
				close(dc, err)
				close(c, err)
				cs.End(err != nil)
				return
			}
			if len(m) == 0 {
				break
			}
			tot += len(m)
		}
		close(reqc, cerror(dc))
		rep := <-repc
		var err error
		var d zx.Dir
		if len(rep) == 0 {
			err = cerror(repc)
		} else {
			d, _, err = zx.UnpackDir(rep)
			if err==nil && d==nil {
				err = errors.New("null dir in put reply")
			}
		}
		cs.End(err != nil)
		if err == nil {
			t.dprintf("put %s: %s\n", rid, d)
			c <- d
		} else {
			if isHangup(err) {
				t.Close(ErrHangUp)
			}
			t.dprintf("put %s: %s\n", rid, err)
		}
		close(c, err)
	}()
	return c
}

func (t *Rfs) Put(rid string, d zx.Dir, off int64, dc <-chan []byte, pred string) chan zx.Dir {
	t.dprintf("put %s %v %d '%s'\n", rid, d, off, pred)
	msg := &Msg{Op: Tput, Rid: rid, D: d, Off: off, Pred: pred}
	return t.putrpc(rid, msg, dc)
}

func (t *Rfs) errrpc(rid, op string, msg *Msg, k int) chan error {
	t.c.Debug = t.Dbg && VerbDebug
	c := make(chan error, 1)
	go func() {
		reqc, repc := t.c.Rpc()
		raw := msg.Pack()
		var cs *zx.CallStat
		if k >= 0 {
			cs = t.IOstats.NewCallSize(k, len(raw))
		}
		reqc <- raw
		close(reqc)
		<-repc
		err := cerror(repc)
		cs.End(err != nil)
		if err != nil {
			if isHangup(err) {
				t.Close(ErrHangUp)
			}
			t.dprintf("%s %s: %s\n", op, rid, err)
		} else {
			t.dprintf("%s %s: ok\n", op, rid)
		}
		c <- err
		close(c, err)
		cs.End(err != nil)
	}()
	return c
}

func (t *Rfs) Fsys(name string) <-chan error {
	t.dprintf("fsys %s\n", name)
	msg := &Msg{Op: Tfsys, Rid: name}
	return t.errrpc(name, "fsys", msg, -1)
}

func (t *Rfs) Mkdir(rid string, d zx.Dir) chan error {
	msg := &Msg{Op: Tmkdir, Rid: rid, D: d}
	t.dprintf("mkdir %s %v\n", rid, d)
	return t.errrpc(rid, "mkdir", msg, zx.Smkdir)
}

func (t *Rfs) Move(from, to string) chan error {
	t.dprintf("move %s %s \n", from, to)
	msg := &Msg{Op: Tmove, Rid: from, To: to}
	return t.errrpc(from, "move", msg, zx.Smove)
}

func (t *Rfs) Remove(rid string) chan error {
	t.dprintf("remove %s\n", rid)
	msg := &Msg{Op: Tremove, Rid: rid}
	return t.errrpc(rid, "remove", msg, zx.Sremove)
}

func (t *Rfs) RemoveAll(rid string) chan error {
	t.dprintf("removeall %s\n", rid)
	msg := &Msg{Op: Tremoveall, Rid: rid}
	return t.errrpc(rid, "removeall", msg, zx.Sremoveall)
}

func (t *Rfs) Wstat(rid string, d zx.Dir) chan error {
	t.dprintf("wstat %s %v\n", rid, d)
	msg := &Msg{Op: Twstat, Rid: rid, D: d}
	return t.errrpc(rid, "wstat", msg, zx.Swstat)
}

func (t *Rfs) Find(rid, pred, spref, dpref string, depth int) <-chan zx.Dir {
	t.dprintf("find %s '%s' '%s' '%s' %d\n", rid, pred, spref, dpref, depth)
	dc := make(chan zx.Dir)
	msg := &Msg{Op: Tfind, Rid: rid, Pred: pred, Spref: spref, Dpref: dpref, Depth: depth}
	go func() {
		reqc, repc := t.c.Rpc()
		raw := msg.Pack()
		cs := t.IOstats.NewCallSize(zx.Sfind, len(raw))
		reqc <- raw
		close(reqc)
		some := false
		for rep := range repc {
			cs.Send(int64(len(rep)))
			d, _, _ := zx.UnpackDir(rep)
			if d != nil {
				d["addr"] = t.addr
				d["proto"] = "zx"
			}
			if ok := dc <- d; !ok {
				close(repc, cerror(dc))
				break
			}
			some = true
			t.dprintf(rid, "find", "<- %v\n", d)
		}
		if !some {
			dc <- nil
		}
		err := cerror(repc)
		cs.End(err != nil)
		if err != nil {
			if isHangup(err) {
				t.Close(ErrHangUp)
			}
			t.dprintf("find %s: %s\n", rid, err)
		} else {
			t.dprintf("find %s: ok\n", rid)
		}
		close(dc, err)
		cs.End(err != nil)
	}()
	return dc

}

func (t *Rfs) FindGet(rid, pred, spref, dpref string, depth int) <-chan zx.DirData {
	t.dprintf("findget %s '%s' '%s' '%s' %d\n", rid, pred, spref, dpref, depth)
	dc := make(chan zx.DirData)
	msg := &Msg{Op: Tfindget, Rid: rid, Pred: pred, Spref: spref, Dpref: dpref, Depth: depth}
	go func() {
		reqc, repc := t.c.Rpc()
		raw := msg.Pack()
		cs := t.IOstats.NewCallSize(zx.Sfind, len(raw))
		reqc <- raw
		close(reqc)
		for rep := range repc {
			cs.Send(int64(len(rep)))
			d, _, _ := zx.UnpackDir(rep)
			if d != nil {
				d["addr"] = t.addr
				d["proto"] = "zx"
			}
			res := zx.DirData{Dir: d}
			var datc chan []byte
			if d["err"]=="" && d["type"]=="-" {
				datc = make(chan []byte)
				res.Datac = datc
			}
			if ok := dc <- res; !ok {
				close(repc, cerror(dc))
				break
			}
			t.dprintf(rid, "find", "<- %v\n", d)
			if datc != nil {
				for rep := range repc {
					if len(rep) == 0 {
						break
					}
					if ok := datc <- rep; !ok {
						continue
					}
				}
				close(datc, cerror(repc))
			}
		}
		err := cerror(repc)
		cs.End(err != nil)
		if err != nil {
			if isHangup(err) {
				t.Close(ErrHangUp)
			}
			t.dprintf("find %s: %s\n", rid, err)
		} else {
			t.dprintf("find %s: ok\n", rid)
		}
		close(dc, err)
	}()
	return dc

}