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Add env var to toggle pivot root or ms_move

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Use the  DOCKER_RAMDISK env var to tell the native driver not to use
a pivot root when setting up the rootfs of a container.
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
This commit is contained in:
Michael Crosby 2014-03-06 19:30:52 -08:00
parent ca93316795
commit da605a43d6
3 changed files with 49 additions and 20 deletions
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2
libcontainer/nsinit/init.go
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@ -51,7 +51,7 @@ func (ns *linuxNs) Init(container *libcontainer.Container, uncleanRootfs, consol
if err := system.ParentDeathSignal(); err != nil {
return fmt.Errorf("parent death signal %s", err)
}
if err := setupNewMountNamespace(rootfs, console, container.ReadonlyFs); err != nil {
if err := setupNewMountNamespace(rootfs, console, container.ReadonlyFs, container.NoPivotRoot); err != nil {
return fmt.Errorf("setup mount namespace %s", err)
}
if err := setupNetwork(container, context); err != nil {