blob: 7b2ac1f2703dbed6fa6d3e3c2dc7633004224f02 [file] [log] [blame]
// Copyright 2019 The LUCI 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 !copybara
package deployer
// Note: FS locking functionality is moved into a separate file for easier
// replacement/disablement if CIPD codebase is partially vendored.
import (
"github.com/danjacques/gofslock/fslock"
)
func init() {
if lockFS != nil {
panic("lockFS is already initialized")
}
// See deployer.go for where lockFS is defined and used.
lockFS = func(path string, waiter func() error) (unlock func() error, err error) {
l := fslock.L{
Path: path,
Block: fslock.Blocker(waiter),
}
handle, err := l.Lock()
if err != nil {
return nil, err
}
return handle.Unlock, nil
}
}