From 65d4f0b5125ebea659d0277916bb74db2c3b9cc0 Mon Sep 17 00:00:00 2001
From: Ralph Wuerthner <ralph.wuerthner@de.ibm.com>
Date: Wed, 10 Jul 2013 16:43:39 +0200
Subject: [PATCH] s3:smbd: allow info class SMB_QUERY_FS_ATTRIBUTE_INFO to
 return partial data

Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <Volker.Lendecke@SerNet.DE>
(cherry picked from commit 270d29a743a030653037cb176f3764bec3c79b6c)
---
 source3/smbd/trans2.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/source3/smbd/trans2.c b/source3/smbd/trans2.c
index 575f96e816d..fda962c65f5 100644
--- a/source3/smbd/trans2.c
+++ b/source3/smbd/trans2.c
@@ -3115,6 +3115,12 @@ cBytesSector=%u, cUnitTotal=%u, cUnitAvail=%d\n", (unsigned int)st.st_ex_dev, (u
 					  STR_UNICODE);
 			SIVAL(pdata,8,len);
 			data_len = 12 + len;
+			if (max_data_bytes >= 16 && data_len > max_data_bytes) {
+				/* the client only requested a portion of the
+				   file system name */
+				data_len = max_data_bytes;
+				status = STATUS_BUFFER_OVERFLOW;
+			}
 			break;
 
 		case SMB_QUERY_FS_LABEL_INFO:
-- 
2.11.4.GIT