From 23c86d84e6816c91addb3781d4f8524021a1571b Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 8 Dec 2017 06:20:06 +0000
Subject: win32.c: check error code

* win32/win32.c (w32_io_info): check GetFileInformationByHandleEx
  error code to fallback to GetFileInformationByHandle.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61077 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 win32/win32.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'win32')

diff --git a/win32/win32.c b/win32/win32.c
index 0c71f1263b..599225bbdd 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -8050,7 +8050,12 @@ w32_io_info(VALUE *file, w32_io_info_t *st)
 		st->file_id_p = TRUE;
 		return ret;
 	    }
-	    /* may not work at files on network drives, fallback to old API. */
+	    else if (GetLastError() != ERROR_INVALID_PARAMETER) {
+		CloseHandle(f);
+		return FALSE;
+	    }
+	    /* this API may not wrok at files on non Microsoft SMB
+	     * server, fallback to old API then. */
 	}
 	if (GetFileInformationByHandle(f, &st->info.bhfi)) {
 	    st->file_id_p = FALSE;
-- 
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