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-rw-r--r--libpod/container_internal_linux.go68
1 files changed, 46 insertions, 22 deletions
diff --git a/libpod/container_internal_linux.go b/libpod/container_internal_linux.go
index e19d75deb..0056b8e86 100644
--- a/libpod/container_internal_linux.go
+++ b/libpod/container_internal_linux.go
@@ -388,6 +388,37 @@ func lookupHostUser(name string) (*runcuser.ExecUser, error) {
return &execUser, nil
}
+// Internal only function which returns upper and work dir from
+// overlay options.
+func getOverlayUpperAndWorkDir(options []string) (string, string, error) {
+ upperDir := ""
+ workDir := ""
+ for _, o := range options {
+ if strings.HasPrefix(o, "upperdir") {
+ splitOpt := strings.SplitN(o, "=", 2)
+ if len(splitOpt) > 1 {
+ upperDir = splitOpt[1]
+ if upperDir == "" {
+ return "", "", errors.New("cannot accept empty value for upperdir")
+ }
+ }
+ }
+ if strings.HasPrefix(o, "workdir") {
+ splitOpt := strings.SplitN(o, "=", 2)
+ if len(splitOpt) > 1 {
+ workDir = splitOpt[1]
+ if workDir == "" {
+ return "", "", errors.New("cannot accept empty value for workdir")
+ }
+ }
+ }
+ }
+ if (upperDir != "" && workDir == "") || (upperDir == "" && workDir != "") {
+ return "", "", errors.New("must specify both upperdir and workdir")
+ }
+ return upperDir, workDir, nil
+}
+
// Generate spec for a container
// Accepts a map of the container's dependencies
func (c *Container) generateSpec(ctx context.Context) (*spec.Spec, error) {
@@ -460,23 +491,9 @@ func (c *Container) generateSpec(ctx context.Context) (*spec.Spec, error) {
for _, o := range namedVol.Options {
if o == "O" {
overlayFlag = true
- }
- if overlayFlag && strings.Contains(o, "upperdir") {
- splitOpt := strings.SplitN(o, "=", 2)
- if len(splitOpt) > 1 {
- upperDir = splitOpt[1]
- if upperDir == "" {
- return nil, errors.New("cannot accept empty value for upperdir")
- }
- }
- }
- if overlayFlag && strings.Contains(o, "workdir") {
- splitOpt := strings.SplitN(o, "=", 2)
- if len(splitOpt) > 1 {
- workDir = splitOpt[1]
- if workDir == "" {
- return nil, errors.New("cannot accept empty value for workdir")
- }
+ upperDir, workDir, err = getOverlayUpperAndWorkDir(namedVol.Options)
+ if err != nil {
+ return nil, err
}
}
}
@@ -489,10 +506,6 @@ func (c *Container) generateSpec(ctx context.Context) (*spec.Spec, error) {
return nil, err
}
- if (upperDir != "" && workDir == "") || (upperDir == "" && workDir != "") {
- return nil, errors.Wrapf(err, "must specify both upperdir and workdir")
- }
-
overlayOpts = &overlay.Options{RootUID: c.RootUID(),
RootGID: c.RootGID(),
UpperDirOptionFragment: upperDir,
@@ -585,11 +598,22 @@ func (c *Container) generateSpec(ctx context.Context) (*spec.Spec, error) {
// Add overlay volumes
for _, overlayVol := range c.config.OverlayVolumes {
+ upperDir, workDir, err := getOverlayUpperAndWorkDir(overlayVol.Options)
+ if err != nil {
+ return nil, err
+ }
contentDir, err := overlay.TempDir(c.config.StaticDir, c.RootUID(), c.RootGID())
if err != nil {
return nil, err
}
- overlayMount, err := overlay.Mount(contentDir, overlayVol.Source, overlayVol.Dest, c.RootUID(), c.RootGID(), c.runtime.store.GraphOptions())
+ overlayOpts := &overlay.Options{RootUID: c.RootUID(),
+ RootGID: c.RootGID(),
+ UpperDirOptionFragment: upperDir,
+ WorkDirOptionFragment: workDir,
+ GraphOpts: c.runtime.store.GraphOptions(),
+ }
+
+ overlayMount, err := overlay.MountWithOptions(contentDir, overlayVol.Source, overlayVol.Dest, overlayOpts)
if err != nil {
return nil, errors.Wrapf(err, "mounting overlay failed %q", overlayVol.Source)
}