Merge pull request #3918 from rhatdan/info

Return information about mount_program (fuse-overlayfs)

3 files changed, 73 insertions, 30 deletions

diff --git a/libpod/info.go b/libpod/info.go
index 9ab6f7e52..e5132b5f6 100644
--- a/libpod/info.go
+++ b/libpod/info.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"os/exec"
 	"runtime"
 	"strconv"
 	"strings"
@@ -17,6 +18,7 @@ import (
 	"github.com/containers/storage"
 	"github.com/containers/storage/pkg/system"
 	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
 )
 
 // top-level "host" info
@@ -44,6 +46,20 @@ func (r *Runtime) hostInfo() (map[string]interface{}, error) {
 		"package": r.defaultOCIRuntime.conmonPackage(),
 		"version": conmonVersion,
 	}
+	if rootless.IsRootless() {
+		if path, err := exec.LookPath("slirp4netns"); err == nil {
+			logrus.Warnf("Failed to retrieve program version for %s: %v", path, err)
+			version, err := programVersion(path)
+			if err != nil {
+				logrus.Warnf("Failed to retrieve program version for %s: %v", path, err)
+			}
+			program := map[string]interface{}{}
+			program["Executable"] = path
+			program["Version"] = version
+			program["Package"] = packageVersion(path)
+			info["slirp4netns"] = program
+		}
+	}
 	info["OCIRuntime"] = map[string]interface{}{
 		"path":    r.defaultOCIRuntime.path,
 		"package": r.defaultOCIRuntime.pathPackage(),
@@ -53,7 +69,6 @@ func (r *Runtime) hostInfo() (map[string]interface{}, error) {
 		"distribution": hostDistributionInfo["Distribution"],
 		"version":      hostDistributionInfo["Version"],
 	}
-
 	info["BuildahVersion"] = buildah.Version
 	kv, err := readKernelVersion()
 	if err != nil {
@@ -113,7 +128,24 @@ func (r *Runtime) storeInfo() (map[string]interface{}, error) {
 	info["GraphRoot"] = r.store.GraphRoot()
 	info["RunRoot"] = r.store.RunRoot()
 	info["GraphDriverName"] = r.store.GraphDriverName()
-	info["GraphOptions"] = r.store.GraphOptions()
+	graphOptions := map[string]interface{}{}
+	for _, o := range r.store.GraphOptions() {
+		split := strings.SplitN(o, "=", 2)
+		if strings.HasSuffix(split[0], "mount_program") {
+			version, err := programVersion(split[1])
+			if err != nil {
+				logrus.Warnf("Failed to retrieve program version for %s: %v", split[1], err)
+			}
+			program := map[string]interface{}{}
+			program["Executable"] = split[1]
+			program["Version"] = version
+			program["Package"] = packageVersion(split[1])
+			graphOptions[split[0]] = program
+		} else {
+			graphOptions[split[0]] = split[1]
+		}
+	}
+	info["GraphOptions"] = graphOptions
 	info["VolumePath"] = r.config.VolumePath
 
 	configFile, err := storage.DefaultConfigFile(rootless.IsRootless())
diff --git a/libpod/oci_linux.go b/libpod/oci_linux.go
index 1613c3e68..6dba1260c 100644
--- a/libpod/oci_linux.go
+++ b/libpod/oci_linux.go
@@ -24,8 +24,6 @@ import (
 	"k8s.io/client-go/tools/remotecommand"
 )
 
-const unknownPackage = "Unknown"
-
 // makeAccessible changes the path permission and each parent directory to have --x--x--x
 func makeAccessible(path string, uid, gid int) error {
 	for ; path != "/"; path = filepath.Dir(path) {
@@ -114,36 +112,12 @@ func (r *OCIRuntime) createContainer(ctr *Container, restoreOptions *ContainerCh
 	return r.createOCIContainer(ctr, restoreOptions)
 }
 
-func rpmVersion(path string) string {
-	output := unknownPackage
-	cmd := exec.Command("/usr/bin/rpm", "-q", "-f", path)
-	if outp, err := cmd.Output(); err == nil {
-		output = string(outp)
-	}
-	return strings.Trim(output, "\n")
-}
-
-func dpkgVersion(path string) string {
-	output := unknownPackage
-	cmd := exec.Command("/usr/bin/dpkg", "-S", path)
-	if outp, err := cmd.Output(); err == nil {
-		output = string(outp)
-	}
-	return strings.Trim(output, "\n")
-}
-
 func (r *OCIRuntime) pathPackage() string {
-	if out := rpmVersion(r.path); out != unknownPackage {
-		return out
-	}
-	return dpkgVersion(r.path)
+	return packageVersion(r.path)
 }
 
 func (r *OCIRuntime) conmonPackage() string {
-	if out := rpmVersion(r.conmonPath); out != unknownPackage {
-		return out
-	}
-	return dpkgVersion(r.conmonPath)
+	return packageVersion(r.conmonPath)
 }
 
 // execContainer executes a command in a running container
diff --git a/libpod/util.go b/libpod/util.go
index 164800af4..84fd490bf 100644
--- a/libpod/util.go
+++ b/libpod/util.go
@@ -3,6 +3,7 @@ package libpod
 import (
 	"fmt"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"sort"
 	"strconv"
@@ -10,6 +11,7 @@ import (
 	"time"
 
 	"github.com/containers/libpod/libpod/define"
+	"github.com/containers/libpod/utils"
 	"github.com/fsnotify/fsnotify"
 	spec "github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/pkg/errors"
@@ -20,6 +22,8 @@ const (
 	// DefaultTransport is a prefix that we apply to an image name
 	// to check docker hub first for the image
 	DefaultTransport = "docker://"
+
+	unknownPackage = "Unknown"
 )
 
 // FuncTimer helps measure the execution time of a function
@@ -152,3 +156,36 @@ func JSONDeepCopy(from, to interface{}) error {
 	}
 	return json.Unmarshal(tmp, to)
 }
+
+func dpkgVersion(path string) string {
+	output := unknownPackage
+	cmd := exec.Command("/usr/bin/dpkg", "-S", path)
+	if outp, err := cmd.Output(); err == nil {
+		output = string(outp)
+	}
+	return strings.Trim(output, "\n")
+}
+
+func rpmVersion(path string) string {
+	output := unknownPackage
+	cmd := exec.Command("/usr/bin/rpm", "-q", "-f", path)
+	if outp, err := cmd.Output(); err == nil {
+		output = string(outp)
+	}
+	return strings.Trim(output, "\n")
+}
+
+func packageVersion(program string) string {
+	if out := rpmVersion(program); out != unknownPackage {
+		return out
+	}
+	return dpkgVersion(program)
+}
+
+func programVersion(mountProgram string) (string, error) {
+	output, err := utils.ExecCmd(mountProgram, "--version")
+	if err != nil {
+		return "", err
+	}
+	return strings.TrimSuffix(output, "\n"), nil
+}