oci-export fix and root&mount fs methods

Author: WoodProgrammer

main.go

@@ -26,15 +26,19 @@ func main() {
 		log.Err(err).Msg("Error while running parserCli.ParseYamlFile()")
 	}
 
-	err = buildCLient.BuildExportDockerImage(result.Context, result.DockerfilePath, result.TargetDirectory)
+	err = rootFsClient.CreateFileDD(10, "ops")
 	if err != nil {
-		log.Err(err).Msg("Error while running buildCLient.BuildExportDockerImage()")
+		log.Err(err).Msg("Error while running rootFsClient.CreateFileDD()")
 	}
 
-	err = rootFsClient.CreateFileDD(10, "ops")
+	fsErr := rootFsClient.FormatandMountFileSystem("ops", result.TargetDirectory)
+	if fsErr != nil {
+		log.Err(fsErr).Msg("Error while running rootFsClient.FormatFileSystem()")
+	}
+
+	err = buildCLient.BuildExportDockerImage(result.Context, result.DockerfilePath, result.TargetDirectory)
 	if err != nil {
-		log.Err(err).Msg("Error while running rootFsClient.CreateFileDD()")
+		log.Err(err).Msg("Error while running buildCLient.BuildExportDockerImage()")
 	}
-	// Extract rootfs components now
 
 }

src/rootfs.go

@@ -1,17 +1,43 @@
 package src
 
 import (
+	"fmt"
 	"os"
+	"os/exec"
 
 	"github.com/rs/zerolog/log"
 )
 
 type RootFS interface {
 	CreateFileDD(size int64, fileName string) error
+	FormatandMountFileSystem(path, targetDirectory string) error
 }
 
 type RootFSHandler struct{}
 
+func (rootfs *RootFSHandler) FormatandMountFileSystem(path, targetDirectory string) error {
+	cmd := exec.Command("mkfs.ext4", path)
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		log.Err(err).Msg("Error running mkfs.ext4:")
+		log.Info().Msgf("Output: %s", string(output))
+		return err
+	}
+
+	log.Info().Msgf("Output: %s", string(output))
+
+	cmd = exec.Command(fmt.Sprintf("mount", path, targetDirectory))
+	output, err = cmd.CombinedOutput()
+	if err != nil {
+		log.Err(err).Msg("Error running mount")
+		log.Info().Msgf("Mount exec output: %s", string(output))
+		return err
+	}
+
+	log.Info().Msgf("Mount exec output: %s", string(output))
+	return nil
+}
+
 func (rootfs *RootFSHandler) CreateFileDD(size int64, fileName string) error {
 
 	size = int64(size * 1024 * 1024) // in MiB files