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Message-ID: <20240805175618.3249561-16-sashal@kernel.org>
Date: Mon, 5 Aug 2024 13:55:48 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: Paulo Alcantara <pc@...guebit.com>,
Sebastian Steinbeisser <Sebastian.Steinbeisser@....de>,
Tom Talpey <tom@...pey.com>,
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 6.10 16/16] smb: client: fix FSCTL_GET_REPARSE_POINT against NetApp
From: Paulo Alcantara <pc@...guebit.com>
[ Upstream commit ddecea00f87f0c46e9c8339a7c89fb2ff891521a ]
NetApp server requires the file to be open with FILE_READ_EA access in
order to support FSCTL_GET_REPARSE_POINT, otherwise it will return
STATUS_INVALID_DEVICE_REQUEST. It doesn't make any sense because
there's no requirement for FILE_READ_EA bit to be set nor
STATUS_INVALID_DEVICE_REQUEST being used for something other than
"unsupported reparse points" in MS-FSA.
To fix it and improve compatibility, set FILE_READ_EA & SYNCHRONIZE
bits to match what Windows client currently does.
Tested-by: Sebastian Steinbeisser <Sebastian.Steinbeisser@....de>
Acked-by: Tom Talpey <tom@...pey.com>
Signed-off-by: Paulo Alcantara (Red Hat) <pc@...guebit.com>
Signed-off-by: Steve French <stfrench@...rosoft.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
fs/smb/client/smb2inode.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c
index 5c02a12251c84..f80bffafb878f 100644
--- a/fs/smb/client/smb2inode.c
+++ b/fs/smb/client/smb2inode.c
@@ -948,7 +948,8 @@ int smb2_query_path_info(const unsigned int xid,
cmds[num_cmds++] = SMB2_OP_GET_REPARSE;
oparms = CIFS_OPARMS(cifs_sb, tcon, full_path,
- FILE_READ_ATTRIBUTES | FILE_READ_EA,
+ FILE_READ_ATTRIBUTES |
+ FILE_READ_EA | SYNCHRONIZE,
FILE_OPEN, create_options |
OPEN_REPARSE_POINT, ACL_NO_MODE);
cifs_get_readable_path(tcon, full_path, &cfile);
@@ -1256,7 +1257,8 @@ int smb2_query_reparse_point(const unsigned int xid,
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
cifs_get_readable_path(tcon, full_path, &cfile);
- oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_READ_ATTRIBUTES,
+ oparms = CIFS_OPARMS(cifs_sb, tcon, full_path,
+ FILE_READ_ATTRIBUTES | FILE_READ_EA | SYNCHRONIZE,
FILE_OPEN, OPEN_REPARSE_POINT, ACL_NO_MODE);
rc = smb2_compound_op(xid, tcon, cifs_sb,
full_path, &oparms, &in_iov,
--
2.43.0
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