[VOL-2235] Mocks and interfaces for rw-core
This update consists of mocks that are used by the rw-core
during unit testing. It also includes interfaces used for unit
tests.
Change-Id: I20ca1455c358113c3aa897acc6355e0ddbc614b7
diff --git a/vendor/go.etcd.io/etcd/pkg/fileutil/preallocate_unix.go b/vendor/go.etcd.io/etcd/pkg/fileutil/preallocate_unix.go
new file mode 100644
index 0000000..50bd84f
--- /dev/null
+++ b/vendor/go.etcd.io/etcd/pkg/fileutil/preallocate_unix.go
@@ -0,0 +1,49 @@
+// Copyright 2016 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build linux
+
+package fileutil
+
+import (
+ "os"
+ "syscall"
+)
+
+func preallocExtend(f *os.File, sizeInBytes int64) error {
+ // use mode = 0 to change size
+ err := syscall.Fallocate(int(f.Fd()), 0, 0, sizeInBytes)
+ if err != nil {
+ errno, ok := err.(syscall.Errno)
+ // not supported; fallback
+ // fallocate EINTRs frequently in some environments; fallback
+ if ok && (errno == syscall.ENOTSUP || errno == syscall.EINTR) {
+ return preallocExtendTrunc(f, sizeInBytes)
+ }
+ }
+ return err
+}
+
+func preallocFixed(f *os.File, sizeInBytes int64) error {
+ // use mode = 1 to keep size; see FALLOC_FL_KEEP_SIZE
+ err := syscall.Fallocate(int(f.Fd()), 1, 0, sizeInBytes)
+ if err != nil {
+ errno, ok := err.(syscall.Errno)
+ // treat not supported as nil error
+ if ok && errno == syscall.ENOTSUP {
+ return nil
+ }
+ }
+ return err
+}