From b9704715fb020d0e6188a420aae42ba3b8a55b17 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max.kellermann@gmail.com>
Date: Wed, 4 Oct 2023 15:26:41 +0200
Subject: [PATCH] io/FileOutputStream: pass dfd=-1 for absolute /proc/self/fd/N
 path

---
 src/io/FileOutputStream.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/io/FileOutputStream.cxx b/src/io/FileOutputStream.cxx
index 41bfed299..c9e56c144 100644
--- a/src/io/FileOutputStream.cxx
+++ b/src/io/FileOutputStream.cxx
@@ -281,7 +281,7 @@ try {
 		unlinkat(directory_fd.Get(), GetPath().c_str(), 0);
 
 		/* hard-link the temporary file to the final path */
-		if (linkat(AT_FDCWD,
+		if (linkat(-1,
 			   FmtBuffer<64>("/proc/self/fd/{}", fd.Get()),
 			   directory_fd.Get(), path.c_str(),
 			   AT_SYMLINK_FOLLOW) < 0)