forked from trivago/gollum
-
Notifications
You must be signed in to change notification settings - Fork 0
/
syscall.go
44 lines (37 loc) · 1.32 KB
/
syscall.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
// Copyright 2015-2017 trivago GmbH
//
// 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 !windows
package shared
import (
"fmt"
"os"
"syscall"
)
// OpenNamedPipe opens or attaches to a named pipe given by name. If the pipe
// is created, perm will be used as file permissions.
// This function is not available on windows.
func OpenNamedPipe(name string, perm uint32) (*os.File, error) {
if err := syscall.Mkfifo(name, perm); !os.IsExist(err) {
return nil, fmt.Errorf("Failed to create named pipe %s: %s", name, err)
}
pipe, err := os.OpenFile(name, os.O_CREATE, os.ModeNamedPipe)
if err != nil {
return nil, fmt.Errorf("Could not open named pipe %s: %s", name, err)
}
stats, _ := pipe.Stat()
if stats.Mode()&os.ModeNamedPipe == 0 {
return nil, fmt.Errorf("File is not a named pipe %s", name)
}
return pipe, nil
}