cmd/reset: Implement the reset command in Go

https://github.com/containers/toolbox/pull/318

src/cmd/reset.go

@@ -17,8 +17,12 @@
 package cmd
 
 import (
+	"errors"
 	"fmt"
 	"os"
+	"os/exec"
+	"strings"
+	"syscall"
 
 	"github.com/containers/toolbox/pkg/utils"
 	"github.com/spf13/cobra"
@@ -36,6 +40,37 @@ func init() {
 }
 
 func reset(cmd *cobra.Command, args []string) error {
+	fmt.Fprintf(os.Stderr, "'%s reset' is deprecated in favor of 'podman system reset'.\n", executableBase)
+
+	if utils.IsInsideContainer() {
+		var builder strings.Builder
+		fmt.Fprintf(&builder, "the 'reset' command cannot be used inside containers\n")
+		fmt.Fprintf(&builder, "Run '%s --help' for usage.", executableBase)
+
+		errMsg := builder.String()
+		return errors.New(errMsg)
+	}
+
+	podmanBinary, err := exec.LookPath("podman")
+	if err != nil {
+		if errors.Is(err, exec.ErrNotFound) {
+			return errors.New("podman(1) not found")
+		}
+
+		return errors.New("failed to lookup podman(1)")
+	}
+
+	podmanArgs := []string{"podman", "system", "reset"}
+	if rootFlags.assumeYes {
+		podmanArgs = append(podmanArgs, []string{"--force"}...)
+	}
+
+	env := os.Environ()
+
+	if err := syscall.Exec(podmanBinary, podmanArgs, env); err != nil {
+		return errors.New("failed to invoke podman(1)")
+	}
+
 	return nil
 }