From f19de48d944aa98686f813a50a2f372f317d16b2 Mon Sep 17 00:00:00 2001
From: Jonathan Davies <jpds@protonmail.com>
Date: Mon, 15 Apr 2024 12:14:50 +0100
Subject: [PATCH] os_release.go: Follow symlink to real os-release path.

Fixes: #2981

Signed-off-by: Jonathan Davies <jpds@protonmail.com>
---
 collector/os_release.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/collector/os_release.go b/collector/os_release.go
index 5d2e94296c..65c5c4cccc 100644
--- a/collector/os_release.go
+++ b/collector/os_release.go
@@ -18,6 +18,7 @@ import (
 	"errors"
 	"io"
 	"os"
+	"path/filepath"
 	"regexp"
 	"strconv"
 	"strings"
@@ -128,6 +129,11 @@ func parseOSRelease(r io.Reader) (*osRelease, error) {
 }
 
 func (c *osReleaseCollector) UpdateStruct(path string) error {
+	path, err := filepath.EvalSymlinks(path)
+	if err != nil {
+		return err
+	}
+
 	releaseFile, err := os.Open(path)
 	if err != nil {
 		return err