Move rootless directory handling to the libpod/pkg/util directory

This should allow us to share this code with buildah.

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

2 files changed, 14 insertions, 48 deletions

diff --git a/libpod/oci.go b/libpod/oci.go
index f6d320017..6eaaa7a29 100644
--- a/libpod/oci.go
+++ b/libpod/oci.go
@@ -17,6 +17,7 @@ import (
 
 	"github.com/containers/libpod/pkg/ctime"
 	"github.com/containers/libpod/pkg/rootless"
+	"github.com/containers/libpod/pkg/util"
 	"github.com/coreos/go-systemd/activation"
 	"github.com/cri-o/ocicni/pkg/ocicni"
 	spec "github.com/opencontainers/runtime-spec/specs-go"
@@ -230,7 +231,7 @@ func bindPorts(ports []ocicni.PortMapping) ([]*os.File, error) {
 func (r *OCIRuntime) createOCIContainer(ctr *Container, cgroupParent string, restoreContainer bool) (err error) {
 	var stderrBuf bytes.Buffer
 
-	runtimeDir, err := GetRootlessRuntimeDir()
+	runtimeDir, err := util.GetRootlessRuntimeDir()
 	if err != nil {
 		return err
 	}
@@ -446,7 +447,7 @@ func (r *OCIRuntime) createOCIContainer(ctr *Container, cgroupParent string, res
 func (r *OCIRuntime) updateContainerStatus(ctr *Container) error {
 	state := new(spec.State)
 
-	runtimeDir, err := GetRootlessRuntimeDir()
+	runtimeDir, err := util.GetRootlessRuntimeDir()
 	if err != nil {
 		return err
 	}
@@ -556,7 +557,7 @@ func (r *OCIRuntime) updateContainerStatus(ctr *Container) error {
 // Sets time the container was started, but does not save it.
 func (r *OCIRuntime) startContainer(ctr *Container) error {
 	// TODO: streams should probably *not* be our STDIN/OUT/ERR - redirect to buffers?
-	runtimeDir, err := GetRootlessRuntimeDir()
+	runtimeDir, err := util.GetRootlessRuntimeDir()
 	if err != nil {
 		return err
 	}
@@ -573,7 +574,7 @@ func (r *OCIRuntime) startContainer(ctr *Container) error {
 // killContainer sends the given signal to the given container
 func (r *OCIRuntime) killContainer(ctr *Container, signal uint) error {
 	logrus.Debugf("Sending signal %d to container %s", signal, ctr.ID())
-	runtimeDir, err := GetRootlessRuntimeDir()
+	runtimeDir, err := util.GetRootlessRuntimeDir()
 	if err != nil {
 		return err
 	}
@@ -636,7 +637,7 @@ func (r *OCIRuntime) stopContainer(ctr *Container, timeout uint) error {
 		args = []string{"kill", "--all", ctr.ID(), "KILL"}
 	}
 
-	runtimeDir, err := GetRootlessRuntimeDir()
+	runtimeDir, err := util.GetRootlessRuntimeDir()
 	if err != nil {
 		return err
 	}
@@ -667,7 +668,7 @@ func (r *OCIRuntime) deleteContainer(ctr *Container) error {
 
 // pauseContainer pauses the given container
 func (r *OCIRuntime) pauseContainer(ctr *Container) error {
-	runtimeDir, err := GetRootlessRuntimeDir()
+	runtimeDir, err := util.GetRootlessRuntimeDir()
 	if err != nil {
 		return err
 	}
@@ -677,7 +678,7 @@ func (r *OCIRuntime) pauseContainer(ctr *Container) error {
 
 // unpauseContainer unpauses the given container
 func (r *OCIRuntime) unpauseContainer(ctr *Container) error {
-	runtimeDir, err := GetRootlessRuntimeDir()
+	runtimeDir, err := util.GetRootlessRuntimeDir()
 	if err != nil {
 		return err
 	}
@@ -698,7 +699,7 @@ func (r *OCIRuntime) execContainer(c *Container, cmd, capAdd, env []string, tty
 		return nil, errors.Wrapf(ErrEmptyID, "must provide a session ID for exec")
 	}
 
-	runtimeDir, err := GetRootlessRuntimeDir()
+	runtimeDir, err := util.GetRootlessRuntimeDir()
 	if err != nil {
 		return nil, err
 	}
@@ -780,7 +781,7 @@ func (r *OCIRuntime) execStopContainer(ctr *Container, timeout uint) error {
 	if len(execSessions) == 0 {
 		return nil
 	}
-	runtimeDir, err := GetRootlessRuntimeDir()
+	runtimeDir, err := util.GetRootlessRuntimeDir()
 	if err != nil {
 		return err
 	}
diff --git a/libpod/runtime.go b/libpod/runtime.go
index 985af2849..f012d66c2 100644
--- a/libpod/runtime.go
+++ b/libpod/runtime.go
@@ -1,13 +1,11 @@
 package libpod
 
 import (
-	"fmt"
 	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"sync"
-	"syscall"
 
 	"github.com/BurntSushi/toml"
 	is "github.com/containers/image/storage"
@@ -17,6 +15,7 @@ import (
 	"github.com/containers/libpod/pkg/hooks"
 	sysreg "github.com/containers/libpod/pkg/registries"
 	"github.com/containers/libpod/pkg/rootless"
+	"github.com/containers/libpod/pkg/util"
 	"github.com/containers/storage"
 	"github.com/cri-o/ocicni/pkg/ocicni"
 	"github.com/docker/docker/pkg/namesgenerator"
@@ -215,46 +214,12 @@ var (
 	}
 )
 
-// GetRootlessRuntimeDir returns the runtime directory when running as non root
-func GetRootlessRuntimeDir() (string, error) {
-	runtimeDir := os.Getenv("XDG_RUNTIME_DIR")
-	uid := fmt.Sprintf("%d", rootless.GetRootlessUID())
-	if runtimeDir == "" {
-		tmpDir := filepath.Join("/run", "user", uid)
-		os.MkdirAll(tmpDir, 0700)
-		st, err := os.Stat(tmpDir)
-		if err == nil && int(st.Sys().(*syscall.Stat_t).Uid) == os.Getuid() && st.Mode().Perm() == 0700 {
-			runtimeDir = tmpDir
-		}
-	}
-	if runtimeDir == "" {
-		tmpDir := filepath.Join(os.TempDir(), "user", uid)
-		os.MkdirAll(tmpDir, 0700)
-		st, err := os.Stat(tmpDir)
-		if err == nil && int(st.Sys().(*syscall.Stat_t).Uid) == os.Getuid() && st.Mode().Perm() == 0700 {
-			runtimeDir = tmpDir
-		}
-	}
-	if runtimeDir == "" {
-		home := os.Getenv("HOME")
-		if home == "" {
-			return "", fmt.Errorf("neither XDG_RUNTIME_DIR nor HOME was set non-empty")
-		}
-		resolvedHome, err := filepath.EvalSymlinks(home)
-		if err != nil {
-			return "", errors.Wrapf(err, "cannot resolve %s", home)
-		}
-		runtimeDir = filepath.Join(resolvedHome, "rundir")
-	}
-	return runtimeDir, nil
-}
-
 func getDefaultTmpDir() (string, error) {
 	if !rootless.IsRootless() {
 		return "/var/run/libpod", nil
 	}
 
-	rootlessRuntimeDir, err := GetRootlessRuntimeDir()
+	rootlessRuntimeDir, err := util.GetRootlessRuntimeDir()
 	if err != nil {
 		return "", err
 	}
@@ -269,7 +234,7 @@ func SetXdgRuntimeDir(val string) error {
 	}
 	if val == "" {
 		var err error
-		val, err = GetRootlessRuntimeDir()
+		val, err = util.GetRootlessRuntimeDir()
 		if err != nil {
 			return err
 		}
@@ -309,7 +274,7 @@ func NewRuntime(options ...RuntimeOption) (runtime *Runtime, err error) {
 			foundConfig = false
 		}
 
-		runtimeDir, err := GetRootlessRuntimeDir()
+		runtimeDir, err := util.GetRootlessRuntimeDir()
 		if err != nil {
 			return nil, err
 		}