linux-kernel - [PATCH AUTOSEL 6.13 28/32] cifs: Throw -EOPNOTSUPP error on unsupported reparse point type from parse_reparse

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Message-Id: <20250224111638.2212832-28-sashal@kernel.org>
Date: Mon, 24 Feb 2025 06:16:34 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Pali Rohár <pali@...nel.org>,
	Steve French <stfrench@...rosoft.com>,
	Sasha Levin <sashal@...nel.org>,
	sfrench@...ba.org,
	linux-cifs@...r.kernel.org,
	samba-technical@...ts.samba.org
Subject: [PATCH AUTOSEL 6.13 28/32] cifs: Throw -EOPNOTSUPP error on unsupported reparse point type from parse_reparse_point()

From: Pali Rohár <pali@...nel.org>

[ Upstream commit cad3fc0a4c8cef07b07ceddc137f582267577250 ]

This would help to track and detect by caller if the reparse point type was
processed or not.

Signed-off-by: Pali Rohár <pali@...nel.org>
Signed-off-by: Steve French <stfrench@...rosoft.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/smb/client/reparse.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/smb/client/reparse.c b/fs/smb/client/reparse.c
index b387dfbaf16b0..a93127c94aff9 100644
--- a/fs/smb/client/reparse.c
+++ b/fs/smb/client/reparse.c
@@ -724,13 +724,12 @@ int parse_reparse_point(struct reparse_data_buffer *buf,
 				 le32_to_cpu(buf->ReparseTag));
 			return -EIO;
 		}
-		break;
+		return 0;
 	default:
 		cifs_tcon_dbg(VFS | ONCE, "unhandled reparse tag: 0x%08x\n",
 			      le32_to_cpu(buf->ReparseTag));
-		break;
+		return -EOPNOTSUPP;
 	}
-	return 0;
 }
 
 int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb,
-- 
2.39.5