Check returned error values

Signed-off-by: Evan Lezar <elezar@nvidia.com>

cmd/nvidia-ctk/config/config.go

@@ -119,10 +119,10 @@ func run(c *cli.Context, opts *options) error {
 	}
 	defer output.Close()
 
-	if err != nil {
+	if _, err := cfgToml.Save(output); err != nil {
-		return err
+		return fmt.Errorf("failed to save config: %v", err)
 	}
-	cfgToml.Save(output)
+
 	return nil
 }
 

cmd/nvidia-ctk/config/create-default/create-default.go

@@ -85,8 +85,7 @@ func (m command) run(c *cli.Context, opts *flags.Options) error {
 	}
 	defer output.Close()
 
-	_, err = cfgToml.Save(output)
+	if _, err = cfgToml.Save(output); err != nil {
-	if err != nil {
 		return fmt.Errorf("failed to write output: %v", err)
 	}
 

internal/info/additional_info.go

@@ -52,7 +52,9 @@ func (i additionalInfo) UsesNVGPUModule() (uses bool, reason string) {
 	if ret != nvml.SUCCESS {
 		return false, fmt.Sprintf("failed to initialize nvml: %v", ret)
 	}
-	defer i.nvmllib.Shutdown()
+	defer func() {
+		_ = i.nvmllib.Shutdown()
+	}()
 
 	var names []string
 

internal/oci/spec_test.go

@@ -22,7 +22,8 @@ func TestMaintainSpec(t *testing.T) {
 
 		spec := NewFileSpec(inputSpecPath).(*fileSpec)
 
-		spec.Load()
+		_, err := spec.Load()
+		require.NoError(t, err)
 
 		outputSpecPath := filepath.Join(moduleRoot, "test/output", f)
 		spec.path = outputSpecPath

internal/runtime/runtime.go

@@ -18,6 +18,7 @@ package runtime
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"strings"
 
@@ -53,7 +54,9 @@ func (r rt) Run(argv []string) (rerr error) {
 		if rerr != nil {
 			r.logger.Errorf("%v", rerr)
 		}
-		r.logger.Reset()
+		if err := r.logger.Reset(); err != nil {
+			rerr = errors.Join(rerr, fmt.Errorf("failed to reset logger: %v", err))
+		}
 	}()
 
 	// We apply some config updates here to ensure that the config is valid in

pkg/nvcdi/driver-nvml.go

@@ -36,7 +36,11 @@ func NewDriverDiscoverer(logger logger.Interface, driverRoot string, nvidiaCTKPa
 	if r := nvmllib.Init(); r != nvml.SUCCESS {
 		return nil, fmt.Errorf("failed to initialize NVML: %v", r)
 	}
-	defer nvmllib.Shutdown()
+	defer func() {
+		if r := nvmllib.Shutdown(); r != nvml.SUCCESS {
+			logger.Warningf("failed to shutdown NVML: %v", r)
+		}
+	}()
 
 	version, r := nvmllib.SystemGetDriverVersion()
 	if r != nvml.SUCCESS {

pkg/nvcdi/driver-wsl.go

@@ -43,7 +43,11 @@ func newWSLDriverDiscoverer(logger logger.Interface, driverRoot string, nvidiaCT
 	if err != nil {
 		return nil, fmt.Errorf("failed to initialize dxcore: %v", err)
 	}
-	defer dxcore.Shutdown()
+	defer func() {
+		if err := dxcore.Shutdown(); err != nil {
+			logger.Warningf("failed to shutdown dxcore: %v", err)
+		}
+	}()
 
 	driverStorePaths := dxcore.GetDriverStorePaths()
 	if len(driverStorePaths) == 0 {

pkg/nvcdi/lib-nvml.go

@@ -43,7 +43,11 @@ func (l *nvmllib) GetAllDeviceSpecs() ([]specs.Device, error) {
 	if r := l.nvmllib.Init(); r != nvml.SUCCESS {
 		return nil, fmt.Errorf("failed to initialize NVML: %v", r)
 	}
-	defer l.nvmllib.Shutdown()
+	defer func() {
+		if r := l.nvmllib.Shutdown(); r != nvml.SUCCESS {
+			l.logger.Warningf("failed to shutdown NVML: %v", r)
+		}
+	}()
 
 	gpuDeviceSpecs, err := l.getGPUDeviceSpecs()
 	if err != nil {

pkg/nvcdi/lib.go

@@ -191,7 +191,11 @@ func (l *nvcdilib) getCudaVersion() (string, error) {
 	if r != nvml.SUCCESS {
 		return "", fmt.Errorf("failed to initialize nvml: %v", r)
 	}
-	defer l.nvmllib.Shutdown()
+	defer func() {
+		if r := l.nvmllib.Shutdown(); r != nvml.SUCCESS {
+			l.logger.Warningf("failed to shutdown NVML: %v", r)
+		}
+	}()
 
 	version, r := l.nvmllib.SystemGetDriverVersion()
 	if r != nvml.SUCCESS {

tools/container/toolkit/toolkit.go

@@ -455,13 +455,14 @@ func installToolkitConfig(c *cli.Context, toolkitConfigPath string, nvidiaContai
 		config.Set(key, value)
 	}
 
-	_, err = config.WriteTo(targetConfig)
+	if _, err := config.WriteTo(targetConfig); err != nil {
-	if err != nil {
 		return fmt.Errorf("error writing config: %v", err)
 	}
 
 	os.Stdout.WriteString("Using config:\n")
-	config.WriteTo(os.Stdout)
+	if _, err = config.WriteTo(os.Stdout); err != nil {
+		log.Warningf("Failed to output config to STDOUT: %v", err)
+	}
 
 	return nil
 }