linux-kernel - [PATCH 11/12] cifs: Add fallback code path for cifs_mkdir

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20241231223642.15722-11-pali@kernel.org>
Date: Tue, 31 Dec 2024 23:36:41 +0100
From: Pali Rohár <pali@...nel.org>
To: Steve French <sfrench@...ba.org>,
	Paulo Alcantara <pc@...guebit.com>
Cc: linux-cifs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 11/12] cifs: Add fallback code path for cifs_mkdir_setinfo()

Use SMBSetInformation() as a fallback function (when CIFSSMBSetPathInfo()
fails) which can set attribudes on the directory, including changing
read-only attribute.

Signed-off-by: Pali Rohár <pali@...nel.org>
---
 fs/smb/client/smb1ops.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/fs/smb/client/smb1ops.c b/fs/smb/client/smb1ops.c
index 33af1a6ab348..1697c1fc13b0 100644
--- a/fs/smb/client/smb1ops.c
+++ b/fs/smb/client/smb1ops.c
@@ -800,6 +800,11 @@ cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
 	info.Attributes = cpu_to_le32(dosattrs);
 	rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
 				cifs_sb);
+	if (rc == -EOPNOTSUPP || rc == -EINVAL)
+		rc = SMBSetInformation(xid, tcon, full_path,
+				       info.Attributes,
+				       0 /* do not change write time */,
+				       cifs_sb->local_nls, cifs_sb);
 	if (rc == 0)
 		cifsInode->cifsAttrs = dosattrs;
 }
-- 
2.20.1