Set machine timezone

Added an option to podman machine init to declare the timezone of the
resulting machine.  the default is to use the value of the host name or
else a given timezone name like America/Chicago.

Fixes: #11895

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

[NO NEW TESTS NEEDED]

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

1 files changed, 33 insertions, 0 deletions

diff --git a/pkg/machine/ignition.go b/pkg/machine/ignition.go
index 5c465d37d..9368cc8ed 100644
--- a/pkg/machine/ignition.go
+++ b/pkg/machine/ignition.go
@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/url"
+	"path/filepath"
 )
 
 /*
@@ -44,6 +45,7 @@ func getNodeGrp(grpName string) NodeGroup {
 type DynamicIgnition struct {
 	Name      string
 	Key       string
+	TimeZone  string
 	VMName    string
 	WritePath string
 }
@@ -76,6 +78,37 @@ func NewIgnitionFile(ign DynamicIgnition) error {
 		Links:       getLinks(ign.Name),
 	}
 
+	// Add or set the time zone for the machine
+	if len(ign.TimeZone) > 0 {
+		var (
+			err error
+			tz  string
+		)
+		// local means the same as the host
+		// lookup where it is pointing to on the host
+		if ign.TimeZone == "local" {
+			tz, err = getLocalTimeZone()
+			if err != nil {
+				return err
+			}
+		} else {
+			tz = ign.TimeZone
+		}
+		tzLink := Link{
+			Node: Node{
+				Group:     getNodeGrp("root"),
+				Path:      "/etc/localtime",
+				Overwrite: boolToPtr(false),
+				User:      getNodeUsr("root"),
+			},
+			LinkEmbedded1: LinkEmbedded1{
+				Hard:   boolToPtr(false),
+				Target: filepath.Join("/usr/share/zoneinfo", tz),
+			},
+		}
+		ignStorage.Links = append(ignStorage.Links, tzLink)
+	}
+
 	// ready is a unit file that sets up the virtual serial device
 	// where when the VM is done configuring, it will send an ack
 	// so a listening host knows it can being interacting with it