From 7d09426187a1a0e3ad735fc257c6b8eed3612f9a Mon Sep 17 00:00:00 2001
From: Viktor Szakats <commit@vsz.me>
Date: Mon, 15 Jun 2026 15:08:09 +0200
Subject: [PATCH] servers: accept `unlink()` failing due to the file missing

In `bind_unix_socket()`, before retrying `bind()`.

This patch uses `ENOENT`. This was last time in source between
d25b0503795f1fbf557632ce870298f52f2a78c1 (2018) and
dffd996e3b54a0c9314b1c93c7f837a5b2b1fc3d (2023), and also earlier. Also
defined by supported Windows envs. Seems safe to use.

Reported-by CodeQL
Follow-up to 99fb36797a3f0b64ad20fcb8b83026875640f8e0
Cherry-picked from #22010

Closes #22028
---
 tests/server/util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/server/util.c b/tests/server/util.c
index dd4e9bacdb..78c954b1cf 100644
--- a/tests/server/util.c
+++ b/tests/server/util.c
@@ -711,7 +711,7 @@ int bind_unix_socket(curl_socket_t sock, const char *unix_socket,
     }
 #endif
     /* dead socket, cleanup and retry bind */
-    if(unlink(unix_socket)) {
+    if(unlink(unix_socket) && errno != ENOENT) {
       logmsg("Error binding socket, failed to unlink %s: %d (%s)", unix_socket,
              errno, curlx_strerror(errno, errbuf, sizeof(errbuf)));
       return -1;