Add support for passing --volumepath

Fixes: https://github.com/containers/podman/issues/13860

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

cmd/podman/root.go

@@ -429,6 +429,10 @@ func rootFlags(cmd *cobra.Command, opts *entities.PodmanConfig) {
 
 		pFlags.BoolVar(&opts.Trace, "trace", false, "Enable opentracing output (default false)")
 
+		volumePathFlagName := "volumepath"
+		pFlags.StringVar(&opts.Engine.VolumePath, volumePathFlagName, "", "Path to the volume directory in which volume data is stored")
+		_ = cmd.RegisterFlagCompletionFunc(volumePathFlagName, completion.AutocompleteDefault)
+
 		// Hide these flags for both ABI and Tunneling
 		for _, f := range []string{
 			"cpu-profile",

docs/source/markdown/podman.1.md

@@ -193,6 +193,10 @@ Some example URL values in valid formats:
 
 Print the version
 
+#### **--volumepath**=*value*
+
+Volume directory where builtin volume information is stored (default: "/var/lib/containers/storage/volumes" for UID 0, "$HOME/.local/share/containers/storage/volumes" for other users). Default volume path can be overridden in `containers.conf`.
+
 ## Environment Variables
 
 Podman can set up environment variables from env of [engine] table in containers.conf. These variables can be overridden by passing  environment variables before the `podman` commands.

pkg/domain/infra/runtime_libpod.go

@@ -209,6 +209,10 @@ func getRuntime(ctx context.Context, fs *flag.FlagSet, opts *engineOpts) (*libpo
 		options = append(options, libpod.WithEventsLogger(cfg.Engine.EventsLogger))
 	}
 
+	if fs.Changed("volumepath") {
+		options = append(options, libpod.WithVolumePath(cfg.Engine.VolumePath))
+	}
+
 	if fs.Changed("cgroup-manager") {
 		options = append(options, libpod.WithCgroupManager(cfg.Engine.CgroupManager))
 	} else {

pkg/specgenutil/util.go

@@ -281,6 +281,7 @@ func CreateExitCommandArgs(storageConfig storageTypes.StoreOptions, config *conf
 		"--tmpdir", config.Engine.TmpDir,
 		"--network-config-dir", config.Network.NetworkConfigDir,
 		"--network-backend", config.Network.NetworkBackend,
+		"--volumepath", config.Engine.VolumePath,
 	}
 	if config.Engine.OCIRuntime != "" {
 		command = append(command, []string{"--runtime", config.Engine.OCIRuntime}...)

test/system/005-info.bats

@@ -107,4 +107,12 @@ host.slirp4netns.executable | $expr_path
     fi
 }
 
+@test "podman --root PATH --volumepath info - basic output" {
+    volumePath=${PODMAN_TMPDIR}/volumesGoHere
+    if ! is_remote; then
+        run_podman --storage-driver=vfs --root ${PODMAN_TMPDIR}/nothing-here-move-along --volumepath ${volumePath} info --format '{{ .Store.VolumePath }}'
+        is "$output" "${volumePath}" "'podman --volumepath should reset VolumePath"
+    fi
+}
+
 # vim: filetype=sh