Move resolution of LDConfig to utils package

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

Author: elezar

cmd/nvidia-cdi-hook/update-ldcache/update-ldcache.go

@@ -20,12 +20,10 @@ import (
 	"errors"
 	"fmt"
 	"path/filepath"
-	"strings"
 
 	"github.com/urfave/cli/v2"
 
 	"github.com/NVIDIA/nvidia-container-toolkit/cmd/nvidia-cdi-hook/utils"
-	"github.com/NVIDIA/nvidia-container-toolkit/internal/config"
 	"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
 	"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
 )
@@ -115,7 +113,7 @@ func (m command) run(c *cli.Context, cfg *options) error {
 		return fmt.Errorf("failed to determined container root: %v", err)
 	}
 
-	ldconfigPath := m.resolveLDConfigPath(cfg.ldconfigPath)
+	ldconfigPath := utils.ResolveHostLDConfigPath(cfg.ldconfigPath)
 	args := []string{filepath.Base(ldconfigPath)}
 	if containerRootDir != "" {
 		args = append(args, "-r", containerRootDir)
@@ -146,10 +144,3 @@ func (m command) run(c *cli.Context, cfg *options) error {
 
 	return m.Exec(ldconfigPath, args, nil)
 }
-
-// resolveLDConfigPath determines the LDConfig path to use for the system.
-// On systems such as Ubuntu where `/sbin/ldconfig` is a wrapper around
-// /sbin/ldconfig.real, the latter is returned.
-func (m command) resolveLDConfigPath(path string) string {
-	return strings.TrimPrefix(config.NormalizeLDConfigPath("@"+path), "@")
-}

cmd/nvidia-cdi-hook/utils/ldconfig.go

@@ -0,0 +1,30 @@
+/**
+# Copyright (c) 2025, NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+**/
+
+package utils
+
+import (
+	"strings"
+
+	"github.com/NVIDIA/nvidia-container-toolkit/internal/config"
+)
+
+// ResolveHostLDConfigPath determines the LDConfig path to use for the system.
+// On systems such as Ubuntu where `/sbin/ldconfig` is a wrapper around
+// /sbin/ldconfig.real, the latter is returned.
+func ResolveHostLDConfigPath(path string) string {
+	return strings.TrimPrefix(config.NormalizeLDConfigPath("@"+path), "@")
+}