From 255ff9cc209155f1bb3878cf86b99d2d9269f52f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9F=D0=B0=D0=B2=D0=B5=D0=BB?=
 <88343304+BlackkkMaster@users.noreply.github.com>
Date: Tue, 29 Apr 2025 16:32:54 +0300
Subject: [PATCH] refactror: add check ipv6 path

fix issues #1669 #2882
---
 util/sys/sys_linux.go | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/util/sys/sys_linux.go b/util/sys/sys_linux.go
index 097ff7c7..d4e6e8ae 100644
--- a/util/sys/sys_linux.go
+++ b/util/sys/sys_linux.go
@@ -44,11 +44,11 @@ func getLinesNum(filename string) (int, error) {
 func GetTCPCount() (int, error) {
 	root := HostProc()
 
-	tcp4, err := getLinesNum(fmt.Sprintf("%v/net/tcp", root))
+	tcp4, err := safeGetLinesNum(fmt.Sprintf("%v/net/tcp", root))
 	if err != nil {
 		return 0, err
 	}
-	tcp6, err := getLinesNum(fmt.Sprintf("%v/net/tcp6", root))
+	tcp6, err := safeGetLinesNum(fmt.Sprintf("%v/net/tcp6", root))
 	if err != nil {
 		return 0, err
 	}
@@ -59,14 +59,23 @@ func GetTCPCount() (int, error) {
 func GetUDPCount() (int, error) {
 	root := HostProc()
 
-	udp4, err := getLinesNum(fmt.Sprintf("%v/net/udp", root))
+	udp4, err := safeGetLinesNum(fmt.Sprintf("%v/net/udp", root))
 	if err != nil {
 		return 0, err
 	}
-	udp6, err := getLinesNum(fmt.Sprintf("%v/net/udp6", root))
+	udp6, err := safeGetLinesNum(fmt.Sprintf("%v/net/udp6", root))
 	if err != nil {
 		return 0, err
 	}
 
 	return udp4 + udp6, nil
 }
+
+func safeGetLinesNum(path string) (int, error) {
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		return 0, nil
+	} else if err != nil {
+		return 0, err
+	}
+	return getLinesNum(path)
+}