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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
// +build !windows
/*
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 runc
import (
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"golang.org/x/sys/unix"
"runtime"
)
// NewPipeIO creates pipe pairs to be used with runc
func NewPipeIO(uid, gid int, opts ...IOOpt) (i IO, err error) {
option := defaultIOOption()
for _, o := range opts {
o(option)
}
var (
pipes []*pipe
stdin, stdout, stderr *pipe
)
// cleanup in case of an error
defer func() {
if err != nil {
for _, p := range pipes {
p.Close()
}
}
}()
if option.OpenStdin {
if stdin, err = newPipe(); err != nil {
return nil, err
}
pipes = append(pipes, stdin)
if err = unix.Fchown(int(stdin.r.Fd()), uid, gid); err != nil {
// TODO: revert with proper darwin solution, skipping for now
// as darwin chown is returning EINVAL on anonymous pipe
if runtime.GOOS == "darwin" {
logrus.WithError(err).Debug("failed to chown stdin, ignored")
} else {
return nil, errors.Wrap(err, "failed to chown stdin")
}
}
}
if option.OpenStdout {
if stdout, err = newPipe(); err != nil {
return nil, err
}
pipes = append(pipes, stdout)
if err = unix.Fchown(int(stdout.w.Fd()), uid, gid); err != nil {
// TODO: revert with proper darwin solution, skipping for now
// as darwin chown is returning EINVAL on anonymous pipe
if runtime.GOOS == "darwin" {
logrus.WithError(err).Debug("failed to chown stdout, ignored")
} else {
return nil, errors.Wrap(err, "failed to chown stdout")
}
}
}
if option.OpenStderr {
if stderr, err = newPipe(); err != nil {
return nil, err
}
pipes = append(pipes, stderr)
if err = unix.Fchown(int(stderr.w.Fd()), uid, gid); err != nil {
// TODO: revert with proper darwin solution, skipping for now
// as darwin chown is returning EINVAL on anonymous pipe
if runtime.GOOS == "darwin" {
logrus.WithError(err).Debug("failed to chown stderr, ignored")
} else {
return nil, errors.Wrap(err, "failed to chown stderr")
}
}
}
return &pipeIO{
in: stdin,
out: stdout,
err: stderr,
}, nil
}
|
