From e65b7f3b82c4ec4cbd78aa45eefba7c555104d77 Mon Sep 17 00:00:00 2001
From: Jean-Adrien DOMAGE <jean-adrien.domage@gapfruit.com>
Date: Wed, 28 Apr 2021 19:37:15 +0200
Subject: [PATCH] lx_fs: fix errno EEXIST not propagated

This commit introduces a fix for lx_fs to propagate errno EEXIST error.
This prevents vfs <import overwrite="false"> to overwrite an imported
file, if it already exists, without the overwrite flag set to true.

Issue genodelabs#4104
---
 repos/os/src/server/lx_fs/file.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/repos/os/src/server/lx_fs/file.h b/repos/os/src/server/lx_fs/file.h
index b5e108c25d..041f875167 100644
--- a/repos/os/src/server/lx_fs/file.h
+++ b/repos/os/src/server/lx_fs/file.h
@@ -39,8 +39,12 @@ class Lx_fs::File : public Node
 			if (create) {
 				mode_t ugo = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
 				ret = mknodat(dir, name, S_IFREG | ugo, 0);
+
 				if (ret == -1 && errno != EEXIST)
 					throw No_space();
+
+				if (errno == EEXIST)
+					throw Node_already_exists();
 			}
 
 			struct stat s;