From 40661849d61d4f21d575c87d0560a2ca01ef77d6 Mon Sep 17 00:00:00 2001
From: Xiang Xiao <xiaoxiang@xiaomi.com>
Date: Sat, 17 Jul 2021 23:15:33 +0800
Subject: [PATCH] fs: mkdir return EEXIST if the path already exist

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Ie1808697b860974367c17e0ba614ca5cae79f324
---
 fs/vfs/fs_mkdir.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/fs/vfs/fs_mkdir.c b/fs/vfs/fs_mkdir.c
index aae409afecc..67229e71308 100644
--- a/fs/vfs/fs_mkdir.c
+++ b/fs/vfs/fs_mkdir.c
@@ -79,6 +79,12 @@ int mkdir(const char *pathname, mode_t mode)
       inode = desc.node;
       DEBUGASSERT(inode != NULL);
 
+      if (desc.relpath[0] == '\0')
+        {
+          errcode = EEXIST;
+          goto errout_with_inode;
+        }
+
 #ifndef CONFIG_DISABLE_MOUNTPOINT
       /* Check if the inode is a valid mountpoint. */