diff options
Diffstat (limited to 'vendor/github.com/prometheus/prometheus/util/flock/flock_solaris.go')
-rw-r--r-- | vendor/github.com/prometheus/prometheus/util/flock/flock_solaris.go | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/vendor/github.com/prometheus/prometheus/util/flock/flock_solaris.go b/vendor/github.com/prometheus/prometheus/util/flock/flock_solaris.go new file mode 100644 index 000000000..299fc8744 --- /dev/null +++ b/vendor/github.com/prometheus/prometheus/util/flock/flock_solaris.go @@ -0,0 +1,59 @@ +// Copyright 2016 The Prometheus 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 solaris + +package flock + +import ( + "os" + "syscall" +) + +type unixLock struct { + f *os.File +} + +func (l *unixLock) Release() error { + if err := l.set(false); err != nil { + return err + } + return l.f.Close() +} + +func (l *unixLock) set(lock bool) error { + flock := syscall.Flock_t{ + Type: syscall.F_UNLCK, + Start: 0, + Len: 0, + Whence: 1, + } + if lock { + flock.Type = syscall.F_WRLCK + } + return syscall.FcntlFlock(l.f.Fd(), syscall.F_SETLK, &flock) +} + +func newLock(fileName string) (Releaser, error) { + f, err := os.OpenFile(fileName, os.O_RDWR|os.O_CREATE, 0644) + if err != nil { + return nil, err + } + l := &unixLock{f} + err = l.set(true) + if err != nil { + f.Close() + return nil, err + } + return l, nil +} |