Add container.conf default volume to init

containers.conf now has a default volumes field for podman machine.
this pr inserts those values as the default volumes in init.

Signed-off-by: Brent Baude <bbaude@redhat.com>

[NO NEW TESTS NEEDED]

Signed-off-by: Brent Baude <bbaude@redhat.com>

2 files changed, 10 insertions, 3 deletions

diff --git a/cmd/podman/machine/init.go b/cmd/podman/machine/init.go
index 518e7490f..2d0afbf05 100644
--- a/cmd/podman/machine/init.go
+++ b/cmd/podman/machine/init.go
@@ -5,6 +5,7 @@ package machine
 
 import (
 	"fmt"
+	"os"
 
 	"github.com/containers/common/pkg/completion"
 	"github.com/containers/podman/v4/cmd/podman/registry"
@@ -94,7 +95,7 @@ func init() {
 	_ = initCmd.RegisterFlagCompletionFunc(ImagePathFlagName, completion.AutocompleteDefault)
 
 	VolumeFlagName := "volume"
-	flags.StringArrayVarP(&initOpts.Volumes, VolumeFlagName, "v", []string{}, "Volumes to mount, source:target")
+	flags.StringArrayVarP(&initOpts.Volumes, VolumeFlagName, "v", cfg.Machine.Volumes, "Volumes to mount, source:target")
 	_ = initCmd.RegisterFlagCompletionFunc(VolumeFlagName, completion.AutocompleteDefault)
 
 	VolumeDriverFlagName := "volume-driver"
@@ -112,9 +113,10 @@ func init() {
 // TODO should we allow for a users to append to the qemu cmdline?
 func initMachine(cmd *cobra.Command, args []string) error {
 	var (
-		vm  machine.VM
 		err error
+		vm  machine.VM
 	)
+
 	provider := getSystemDefaultProvider()
 	initOpts.Name = defaultMachineName
 	if len(args) > 0 {
@@ -126,7 +128,9 @@ func initMachine(cmd *cobra.Command, args []string) error {
 	if _, err := provider.LoadVMByName(initOpts.Name); err == nil {
 		return errors.Wrap(machine.ErrVMAlreadyExists, initOpts.Name)
 	}
-
+	for idx, vol := range initOpts.Volumes {
+		initOpts.Volumes[idx] = os.ExpandEnv(vol)
+	}
 	vm, err = provider.NewMachine(initOpts)
 	if err != nil {
 		return err
diff --git a/docs/source/markdown/podman-machine-init.1.md b/docs/source/markdown/podman-machine-init.1.md
index ac258eaae..33947bbba 100644
--- a/docs/source/markdown/podman-machine-init.1.md
+++ b/docs/source/markdown/podman-machine-init.1.md
@@ -83,6 +83,9 @@ Podman mounts _host-dir_ in the host to _machine-dir_ in the Podman machine.
 The root filesystem is mounted read-only in the default operating system,
 so mounts must be created under the /mnt directory.
 
+Default volume mounts are defined in *containers.conf*.  Unless changed, the default values
+is `$HOME:$HOME`.
+
 #### **--volume-driver**
 
 Driver to use for mounting volumes from the host, such as `virtfs`.