Merge branch 'CNT-4144/non-ldcache' into 'main'

Only update ldcache if it exists

See merge request nvidia/container-toolkit/container-toolkit!369

Author: Evan Lezar

CHANGELOG.md

@@ -2,7 +2,8 @@
 
 ## v1.13.1
 
-* Bump version to 1.13.1
+* Update `update-ldcache` hook to only update ldcache if it exists.
+* Update `update-ldcache` hook to create `/etc/ld.so.conf.d` folder if it doesn't exist.
 
 ## v1.13.0
 

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

@@ -84,6 +84,12 @@ func (m command) run(c *cli.Context, cfg *config) error {
 		return fmt.Errorf("failed to determined container root: %v", err)
 	}
 
+	_, err = os.Stat(filepath.Join(containerRoot, "/etc/ld.so.cache"))
+	if err != nil && os.IsNotExist(err) {
+		m.logger.Debugf("No ld.so.cache found, skipping update")
+		return nil
+	}
+
 	err = m.createConfig(containerRoot, cfg.folders.Value())
 	if err != nil {
 		return fmt.Errorf("failed to update ld.so.conf: %v", err)
@@ -105,6 +111,10 @@ func (m command) createConfig(root string, folders []string) error {
 		return nil
 	}
 
+	if err := os.MkdirAll(filepath.Join(root, "/etc/ld.so.conf.d"), 0755); err != nil {
+		return fmt.Errorf("failed to create ld.so.conf.d: %v", err)
+	}
+
 	configFile, err := os.CreateTemp(filepath.Join(root, "/etc/ld.so.conf.d"), "nvcr-*.conf")
 	if err != nil {
 		return fmt.Errorf("failed to create config file: %v", err)