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katautils: update paths to be configurable for rootless execution

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Before using the default ctrsMapTrePath, check whether the runtime
is being ran rootlessly, and if so set the ctrsMapTreePath to the
rootlessRuntimeDir configured by the libpod rootless library.

Fixes: 

Signed-off-by: Gabi Beyer <gabrielle.n.beyer@intel.com>
This commit is contained in:
Gabi Beyer 2019-07-11 19:32:45 +00:00 committed by Marco Vedovati
parent 2d8b278c09
commit cdd6f7e4d5
1 changed files with 18 additions and 0 deletions

18
pkg/katautils/oci.go
View File

@ -11,6 +11,9 @@ import (
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/kata-containers/runtime/pkg/rootless"
)
const ctrsMappingDirMode = os.FileMode(0750)
@ -22,6 +25,11 @@ func SetCtrsMapTreePath(path string) {
ctrsMapTreePath = path
}
// doUpdatePath returns whether a ctrsMapTreePath needs to be updated with a rootless prefix
func doUpdatePath() bool {
return rootless.IsRootless() && !strings.HasPrefix(ctrsMapTreePath, rootless.GetRootlessDir())
}
// FetchContainerIDMapping This function assumes it should find only one file inside the container
// ID directory. If there are several files, we could not determine which
// file name corresponds to the sandbox ID associated, and this would throw
@ -31,6 +39,10 @@ func FetchContainerIDMapping(containerID string) (string, error) {
return "", fmt.Errorf("Missing container ID")
}
if doUpdatePath() {
SetCtrsMapTreePath(filepath.Join(rootless.GetRootlessDir(), ctrsMapTreePath))
}
dirPath := filepath.Join(ctrsMapTreePath, containerID)
files, err := ioutil.ReadDir(dirPath)
@ -62,6 +74,9 @@ func AddContainerIDMapping(ctx context.Context, containerID, sandboxID string) e
return fmt.Errorf("Missing sandbox ID")
}
if doUpdatePath() {
SetCtrsMapTreePath(filepath.Join(rootless.GetRootlessDir(), ctrsMapTreePath))
}
parentPath := filepath.Join(ctrsMapTreePath, containerID)
if err := os.RemoveAll(parentPath); err != nil {
@ -86,6 +101,9 @@ func DelContainerIDMapping(ctx context.Context, containerID string) error {
return fmt.Errorf("Missing container ID")
}
if doUpdatePath() {
SetCtrsMapTreePath(filepath.Join(rootless.GetRootlessDir(), ctrsMapTreePath))
}
path := filepath.Join(ctrsMapTreePath, containerID)
return os.RemoveAll(path)