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Update docker with syncpipe changes 

We removed the syncpipe package and replaced it with specific calls to
create a new *os.File from a specified fd passed to the process.  This
reduced code and an extra object to manage the container's init
lifecycle.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
This commit is contained in:
Michael Crosby 2014-11-06 01:14:13 +00:00
parent 7f5ebdcaac
commit ed556fb38f
2 changed files with 3 additions and 15 deletions
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8
daemon/execdriver/native/init.go
View File

@ -13,7 +13,6 @@ import (
"github.com/docker/docker/pkg/reexec"
"github.com/docker/libcontainer"
"github.com/docker/libcontainer/namespaces"
"github.com/docker/libcontainer/syncpipe"
)
func init() {
@ -48,12 +47,7 @@ func initializer() {
writeError(err)
}
syncPipe, err := syncpipe.NewSyncPipeFromFd(0, uintptr(*pipe))
if err != nil {
writeError(err)
}
if err := namespaces.Init(container, rootfs, *console, syncPipe, flag.Args()); err != nil {
if err := namespaces.Init(container, rootfs, *console, os.NewFile(uintptr(*pipe), "child"), flag.Args()); err != nil {
writeError(err)
}

10
daemon/execdriver/native/utils.go
View File

@ -3,10 +3,10 @@
package native
import (
"encoding/json"
"os"
"github.com/docker/libcontainer"
"github.com/docker/libcontainer/syncpipe"
)
func findUserArgs() []string {
@ -21,15 +21,9 @@ func findUserArgs() []string {
// loadConfigFromFd loads a container's config from the sync pipe that is provided by
// fd 3 when running a process
func loadConfigFromFd() (*libcontainer.Config, error) {
syncPipe, err := syncpipe.NewSyncPipeFromFd(0, 3)
if err != nil {
return nil, err
}
var config *libcontainer.Config
if err := syncPipe.ReadFromParent(&config); err != nil {
if err := json.NewDecoder(os.NewFile(3, "child")).Decode(&config); err != nil {
return nil, err
}
return config, nil
}