1
2
3 package main
4
5 import (
6 "errors"
7 "fmt"
8 "os"
9 "path/filepath"
10
11 "github.com/Microsoft/hcsshim"
12 "github.com/urfave/cli"
13 )
14
15
16
17
18 var usage = `Windows Container layer utility
19
20 wclayer is a command line tool for manipulating Windows Container
21 storage layers. It can import and export layers from and to OCI format
22 layer tar files, create new writable layers, and mount and unmount
23 container images.`
24
25 var driverInfo = hcsshim.DriverInfo{}
26
27 func main() {
28 app := cli.NewApp()
29 app.Name = "wclayer"
30 app.Commands = []cli.Command{
31 createCommand,
32 exportCommand,
33 importCommand,
34 makeBaseLayerCommand,
35 mountCommand,
36 removeCommand,
37 unmountCommand,
38 }
39 app.Usage = usage
40
41 if err := app.Run(os.Args); err != nil {
42 fmt.Fprintln(os.Stderr, err)
43 os.Exit(1)
44 }
45 }
46
47 func normalizeLayers(il []string, needOne bool) ([]string, error) {
48 if needOne && len(il) == 0 {
49 return nil, errors.New("at least one read-only layer must be specified")
50 }
51 ol := make([]string, len(il))
52 for i := range il {
53 var err error
54 ol[i], err = filepath.Abs(il[i])
55 if err != nil {
56 return nil, err
57 }
58 }
59 return ol, nil
60 }
61
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