| // +build !linux |
| |
| /* |
| Copyright The containerd 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. |
| */ |
| |
| package fifo |
| |
| import ( |
| "syscall" |
| |
| "github.com/pkg/errors" |
| ) |
| |
| type handle struct { |
| fn string |
| dev uint64 |
| ino uint64 |
| } |
| |
| func getHandle(fn string) (*handle, error) { |
| var stat syscall.Stat_t |
| if err := syscall.Stat(fn, &stat); err != nil { |
| return nil, errors.Wrapf(err, "failed to stat %v", fn) |
| } |
| |
| h := &handle{ |
| fn: fn, |
| dev: uint64(stat.Dev), |
| ino: uint64(stat.Ino), |
| } |
| |
| return h, nil |
| } |
| |
| func (h *handle) Path() (string, error) { |
| var stat syscall.Stat_t |
| if err := syscall.Stat(h.fn, &stat); err != nil { |
| return "", errors.Wrapf(err, "path %v could not be statted", h.fn) |
| } |
| if uint64(stat.Dev) != h.dev || uint64(stat.Ino) != h.ino { |
| return "", errors.Errorf("failed to verify handle %v/%v %v/%v for %v", stat.Dev, h.dev, stat.Ino, h.ino, h.fn) |
| } |
| return h.fn, nil |
| } |
| |
| func (h *handle) Name() string { |
| return h.fn |
| } |
| |
| func (h *handle) Close() error { |
| return nil |
| } |