aboutsummaryrefslogtreecommitdiff
path: root/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_windows.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_windows.go')
-rw-r--r--vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_windows.go78
1 files changed, 78 insertions, 0 deletions
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_windows.go b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_windows.go
new file mode 100644
index 0000000..899335f
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_windows.go
@@ -0,0 +1,78 @@
+// Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package storage
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+var (
+ modkernel32 = syscall.NewLazyDLL("kernel32.dll")
+
+ procMoveFileExW = modkernel32.NewProc("MoveFileExW")
+)
+
+const (
+ _MOVEFILE_REPLACE_EXISTING = 1
+)
+
+type windowsFileLock struct {
+ fd syscall.Handle
+}
+
+func (fl *windowsFileLock) release() error {
+ return syscall.Close(fl.fd)
+}
+
+func newFileLock(path string, readOnly bool) (fl fileLock, err error) {
+ pathp, err := syscall.UTF16PtrFromString(path)
+ if err != nil {
+ return
+ }
+ var access, shareMode uint32
+ if readOnly {
+ access = syscall.GENERIC_READ
+ shareMode = syscall.FILE_SHARE_READ
+ } else {
+ access = syscall.GENERIC_READ | syscall.GENERIC_WRITE
+ }
+ fd, err := syscall.CreateFile(pathp, access, shareMode, nil, syscall.OPEN_EXISTING, syscall.FILE_ATTRIBUTE_NORMAL, 0)
+ if err == syscall.ERROR_FILE_NOT_FOUND {
+ fd, err = syscall.CreateFile(pathp, access, shareMode, nil, syscall.OPEN_ALWAYS, syscall.FILE_ATTRIBUTE_NORMAL, 0)
+ }
+ if err != nil {
+ return
+ }
+ fl = &windowsFileLock{fd: fd}
+ return
+}
+
+func moveFileEx(from *uint16, to *uint16, flags uint32) error {
+ r1, _, e1 := syscall.Syscall(procMoveFileExW.Addr(), 3, uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(to)), uintptr(flags))
+ if r1 == 0 {
+ if e1 != 0 {
+ return error(e1)
+ }
+ return syscall.EINVAL
+ }
+ return nil
+}
+
+func rename(oldpath, newpath string) error {
+ from, err := syscall.UTF16PtrFromString(oldpath)
+ if err != nil {
+ return err
+ }
+ to, err := syscall.UTF16PtrFromString(newpath)
+ if err != nil {
+ return err
+ }
+ return moveFileEx(from, to, _MOVEFILE_REPLACE_EXISTING)
+}
+
+func syncDir(name string) error { return nil }