Add golint

Signed-off-by: Mauro Morales <mauro.morales@spectrocloud.com>

Earthfile

@@ -3,6 +3,9 @@ VERSION 0.6
 # TODO: This needs to come from pre-built kernels in c3os repos, kcrypt included.
 # Framework images should use our initrd
 ARG BASE_IMAGE=quay.io/kairos/core-opensuse
+# renovate: datasource=docker depName=golang
+ARG GO_VERSION=1.20.2
+ARG GOLINT_VERSION=1.52.2
 
 build-kcrypt:
     FROM golang:alpine
@@ -64,6 +67,15 @@ iso:
     SAVE ARTIFACT /build/$ISO_NAME.iso iso AS LOCAL build/$ISO_NAME.iso
     SAVE ARTIFACT /build/$ISO_NAME.iso.sha256 sha256 AS LOCAL build/$ISO_NAME.iso.sha256
 
+golint:
+    ARG GO_VERSION
+    FROM golang:$GO_VERSION
+    ARG GOLINT_VERSION
+    RUN wget -O- -nv https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s v$GOLINT_VERSION
+    WORKDIR /build
+    COPY . .
+    RUN golangci-lint run
+
 yamllint:
     FROM cytopia/yamllint
     COPY . .

main.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -24,8 +23,11 @@ var Version = "v0.0.0-dev"
 
 func waitdevice(device string, attempts int) error {
 	for tries := 0; tries < attempts; tries++ {
-		sh("udevadm settle")
-		_, err := os.Lstat(device)
+		_, err := sh("udevadm settle")
+		if err != nil {
+			return err
+		}
+		_, err = os.Lstat(device)
 		if !os.IsNotExist(err) {
 			return nil
 		}
@@ -44,7 +46,10 @@ func getPassword(b *block.Partition) (password string, err error) {
 			err = fmt.Errorf("failed discovery: %s", r.Error)
 		}
 	})
-	bus.Manager.Publish(bus.EventDiscoveryPassword, b)
+	_, err = bus.Manager.Publish(bus.EventDiscoveryPassword, b)
+	if err != nil {
+		return password, err
+	}
 
 	if password == "" {
 		return password, fmt.Errorf("received empty password")
@@ -95,19 +100,6 @@ func createLuks(dev, password, version string, cryptsetupArgs ...string) error {
 	return nil
 }
 
-func createDiskImage() (*os.File, error) {
-	disk, err := ioutil.TempFile("", "luksv2.go.disk")
-	if err != nil {
-		return nil, err
-	}
-
-	if err := disk.Truncate(24 * 1024 * 1024); err != nil {
-		return nil, err
-	}
-
-	return disk, err
-}
-
 // TODO: A crypt disk utility to call after install, that with discovery discoveries the password that should be used
 // this function should delete COS_PERSISTENT. delete the partition and create a luks+type in place.
 
@@ -210,9 +202,13 @@ func detect(archive string) (string, error) {
 
 // TODO: replace with golang native code
 func extractInitrd(initrd string, dst string) error {
-	os.MkdirAll(dst, os.ModePerm)
 	var out string
 	var err error
+	err = os.MkdirAll(dst, os.ModePerm)
+	if err != nil {
+		return err
+	}
+
 	format, err := detect(initrd)
 	if err != nil {
 		return err
@@ -256,7 +252,7 @@ func injectInitrd(initrd string, file, dst string) error {
 	if err != nil {
 		return err
 	}
-	tmp, err := ioutil.TempDir("", "kcrypt")
+	tmp, err := os.MkdirTemp("", "kcrypt")
 	if err != nil {
 		return fmt.Errorf("cannot create tempdir, %s", err)
 	}
@@ -297,8 +293,8 @@ func unlockAll() error {
 			if p.Type == "crypto_LUKS" {
 				p.Label = config.LookupLabelForUUID(p.UUID)
 				fmt.Printf("Unmounted Luks found at '%s' LABEL '%s' \n", p.Name, p.Label)
-				err = multierror.Append(err, unlockDisk(p))
-				if err != nil {
+				multiError := multierror.Append(err, unlockDisk(p))
+				if multiError.ErrorOrNil() != nil {
 					fmt.Printf("Unlocking failed: '%s'\n", err.Error())
 				}
 				time.Sleep(10 * time.Second)

pkg/config/config.go

@@ -4,7 +4,7 @@ package config
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strings"
 
 	"github.com/jaypipes/ghw/pkg/block"
@@ -97,7 +97,7 @@ func (c *Config) WriteMappings(fileName string) error {
 
 	data = append([]byte(collector.DefaultHeader+"\n"), data...)
 
-	err = ioutil.WriteFile(fileName, data, 0744)
+	err = os.WriteFile(fileName, data, 0744)
 	if err != nil {
 		return errors.Wrap(err, "writing the kcrypt configuration file")
 	}

pkg/config/config_test.go

@@ -124,8 +124,11 @@ kcrypt:
 			})
 
 			It("replaces the file contents", func() {
-				c.SetMapping("COS_PERSISTENT:the_new_name:the_new_uuid")
-				c.WriteMappings(tmpFile.Name())
+<<<<<<< HEAD
+				err := c.SetMapping("COS_PERSISTENT:the_new_name:the_new_uuid")
+				Expect(err).ToNot(HaveOccurred())
+				err = c.WriteMappings(tmpFile.Name())
+				Expect(err).ToNot(HaveOccurred())
 				data, err := os.ReadFile(tmpFile.Name())
 				Expect(err).ToNot(HaveOccurred())
 				Expect(collector.HasValidHeader(string(data))).To(BeTrue())
@@ -145,8 +148,9 @@ kcrypt:
 			})
 
 			It("creates the file with the given mappings", func() {
-				c.SetMapping("COS_PERSISTENT:the_new_name:the_new_uuid")
-				err := c.WriteMappings(tmpFile.Name())
+				err := c.SetMapping("COS_PERSISTENT:the_new_name:the_new_uuid")
+				Expect(err).ToNot(HaveOccurred())
+				err = c.WriteMappings(tmpFile.Name())
 				Expect(err).ToNot(HaveOccurred())
 
 				newConfig, err := configpkg.GetConfiguration([]string{tmpDir})
@@ -164,8 +168,10 @@ kcrypt:
 			tmpFile, err = os.CreateTemp(tmpDir, "config-*.yaml")
 			Expect(err).ToNot(HaveOccurred())
 			// Should trim the whitespace
-			c.SetMapping("COS_PERSISTENT:the_new_name:some_uuid_1\n")
-			c.WriteMappings(tmpFile.Name())
+			err = c.SetMapping("COS_PERSISTENT:the_new_name:some_uuid_1\n")
+			Expect(err).ToNot(HaveOccurred())
+			err = c.WriteMappings(tmpFile.Name())
+			Expect(err).ToNot(HaveOccurred())
 		})
 
 		It("returns the correct UUID", func() {
@@ -192,8 +198,10 @@ kcrypt:
 		BeforeEach(func() {
 			tmpFile, err = os.CreateTemp(tmpDir, "config-*.yaml")
 			Expect(err).ToNot(HaveOccurred())
-			c.SetMapping("COS_PERSISTENT:the_new_name:some_uuid_1")
-			c.WriteMappings(tmpFile.Name())
+			err = c.SetMapping("COS_PERSISTENT:the_new_name:some_uuid_1")
+			Expect(err).ToNot(HaveOccurred())
+			err = c.WriteMappings(tmpFile.Name())
+			Expect(err).ToNot(HaveOccurred())
 		})
 
 		It("returns the correct label", func() {