initial import

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>

backend/block/block.go

@@ -0,0 +1,100 @@
+package block
+
+/*
+import (
+	"fmt"
+	"os"
+
+	"github.com/mitchellh/mapstructure"
+	"golang.org/x/sys/unix"
+	"github.com/sdstack/storage/backend"
+)
+
+type StoreBlock struct {
+	store []string
+}
+
+type ObjectBlock struct {
+	fs *StoreBlock
+	fp *os.File
+}
+
+func init() {
+	backend.RegisterBackend("block", &StoreBlock{})
+}
+func (s *StoreBlock) Init(data interface{}) error {
+	var err error
+
+	err = mapstructure.Decode(data, &s.store)
+	if err != nil {
+		return err
+	}
+	fmt.Printf("%#+v\n", s)
+	return nil
+}
+
+func (s *StoreBlock) Configure(data interface{}) error {
+	var err error
+
+	err = mapstructure.Decode(data, &s.store)
+	if err != nil {
+		return err
+	}
+	fmt.Printf("%#+v\n", s)
+	return nil
+}
+
+func (s *StoreBlock) Open() error {
+	return nil
+}
+
+func (s *StoreBlock) Close() error {
+	return nil
+}
+
+func (o *ObjectBlock) Allocate(mode uint64, offset uint64, length uint64) error {
+	return unix.Fallocate(int(o.fp.Fd()), uint32(mode), int64(offset), int64(length))
+}
+
+func (o *ObjectBlock) Delete(flags uint64) error {
+	return nil
+	//	return os.Remove(filepath.Join())
+}
+
+func (o *ObjectBlock) ReadAt(data []byte, offset uint64, flags uint64) (uint64, error) {
+	return 0, nil
+}
+
+func (o *ObjectBlock) WriteAt(data []byte, offset uint64, flags uint64) (uint64, error) {
+	return 0, nil
+}
+
+func (o *ObjectBlock) Read(data []byte) (int, error) {
+	return o.fp.Read(data)
+}
+
+func (o *ObjectBlock) Write(data []byte) (int, error) {
+	return o.fp.Write(data)
+}
+
+func (o *ObjectBlock) Seek(offset int64, whence int) (int64, error) {
+	return o.fp.Seek(offset, whence)
+}
+
+func (o *StoreBlock) ObjectExists(name string) (bool, error) {
+	_, err := os.Stat(name)
+	return os.IsNotExist(err), nil
+}
+
+func (o *ObjectBlock) Sync() error {
+	return o.fp.Sync()
+}
+
+func (o *ObjectBlock) Close() error {
+	return o.fp.Close()
+}
+
+func (o *ObjectBlock) Remove() error {
+	return nil
+}
+*/