diff options
Diffstat (limited to 'runsc/cmd/checkpoint.go')
| -rw-r--r-- | runsc/cmd/checkpoint.go | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/runsc/cmd/checkpoint.go b/runsc/cmd/checkpoint.go index 9b045da1c..927027c2b 100644 --- a/runsc/cmd/checkpoint.go +++ b/runsc/cmd/checkpoint.go @@ -15,6 +15,8 @@ package cmd import ( + "os" + "context" "flag" "github.com/google/subcommands" @@ -24,6 +26,7 @@ import ( // Checkpoint implements subcommands.Command for the "checkpoint" command. type Checkpoint struct { + imagePath string } // Name implements subcommands.Command.Name. @@ -44,6 +47,7 @@ func (*Checkpoint) Usage() string { // SetFlags implements subcommands.Command.SetFlags. func (c *Checkpoint) SetFlags(f *flag.FlagSet) { + f.StringVar(&c.imagePath, "image-path", "", "path to saved container image") } // Execute implements subcommands.Command.Execute. @@ -62,7 +66,18 @@ func (c *Checkpoint) Execute(_ context.Context, f *flag.FlagSet, args ...interfa Fatalf("error loading container: %v", err) } - if err := cont.Checkpoint(); err != nil { + if c.imagePath == "" { + Fatalf("image-path flag must be provided") + } + + // Create the image file and open for writing. + file, err := os.OpenFile(c.imagePath, os.O_CREATE|os.O_EXCL|os.O_RDWR, 0644) + if err != nil { + Fatalf("os.OpenFile(%q) failed: %v", c.imagePath, err) + } + defer file.Close() + + if err := cont.Checkpoint(file); err != nil { Fatalf("checkpoint failed: %v", err) } |