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Add support for overlay volume mounts in podman.

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Add support -v for overlay volume mounts in podman.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

Signed-off-by: Qi Wang <qiwan@redhat.com>
This commit is contained in:
Qi Wang
2020-07-09 15:46:14 -04:00
parent 17f9b80600
commit 020d81f113
15 changed files with 359 additions and 58 deletions
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18
libpod/container_internal_linux.go
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@ -20,6 +20,7 @@ import (
cnitypes "github.com/containernetworking/cni/pkg/types/current"
"github.com/containernetworking/plugins/pkg/ns"
"github.com/containers/buildah/pkg/overlay"
"github.com/containers/buildah/pkg/secrets"
"github.com/containers/common/pkg/apparmor"
"github.com/containers/common/pkg/config"
@ -319,6 +320,19 @@ func (c *Container) generateSpec(ctx context.Context) (*spec.Spec, error) {
}
}
// Add overlay volumes
for _, overlayVol := range c.config.OverlayVolumes {
contentDir, err := overlay.TempDir(c.config.StaticDir, c.RootUID(), c.RootGID())
if err != nil {
return nil, errors.Wrapf(err, "failed to create TempDir in the %s directory", c.config.StaticDir)
}
overlayMount, err := overlay.Mount(contentDir, overlayVol.Source, overlayVol.Dest, c.RootUID(), c.RootGID(), c.runtime.store.GraphOptions())
if err != nil {
return nil, errors.Wrapf(err, "creating overlay failed %q", overlayVol.Source)
}
g.AddMount(overlayMount)
}
hasHomeSet := false
for _, s := range c.config.Spec.Process.Env {
if strings.HasPrefix(s, "HOME=") {
@ -1642,3 +1656,7 @@ func (c *Container) copyTimezoneFile(zonePath string) (string, error) {
}
return localtimeCopy, err
}
func (c *Container) cleanupOverlayMounts() error {
return overlay.CleanupContent(c.config.StaticDir)
}