From e550e261f0dd318769741579d6e185fb6e12055e Mon Sep 17 00:00:00 2001
From: zeho11 <73569575+zeho11@users.noreply.github.com>
Date: Mon, 12 Dec 2022 12:08:48 +0900
Subject: [PATCH] dll: fuse: correct error handling when name exceeds limit

Related to b62e1e920b292c4928395db89e96fada29dd7c38
---
 src/dll/fuse/fuse_intf.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/dll/fuse/fuse_intf.c b/src/dll/fuse/fuse_intf.c
index 287f2e48..bca425d0 100644
--- a/src/dll/fuse/fuse_intf.c
+++ b/src/dll/fuse/fuse_intf.c
@@ -1949,18 +1949,16 @@ int fsp_fuse_intf_AddDirInfo(void *buf, const char *name,
     SizeW = MultiByteToWideChar(CP_UTF8, 0, name, SizeA, DirInfo->FileNameBuf, 255);
     if (0 == SizeW)
     {
-        fsp_fuse_intf_LogBadDirInfo(filedesc->PosixPath, name,
-            "MultiByteToWideChar failed");
-        return 0;
-    }
-    else if (255 == SizeW)
-    {
-        if (255 < MultiByteToWideChar(CP_UTF8, 0, name, SizeA, NULL, 0))
+        if (ERROR_INSUFFICIENT_BUFFER == GetLastError())
         {
             fsp_fuse_intf_LogBadDirInfo(filedesc->PosixPath, name,
                 "too long");
             return 0;
         }
+
+        fsp_fuse_intf_LogBadDirInfo(filedesc->PosixPath, name,
+            "MultiByteToWideChar failed");
+        return 0;
     }
 
     memset(DirInfo, 0, sizeof *DirInfo);