[PATCH 03/35] cifs: Add fallback code path for cifs_mkdir_setinfo()

["Pali Rohár" <pali@kernel.org>]

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@kernel.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 cc4feebbdd11..de415b9945ee 100644
--- a/fs/smb/client/smb1ops.c
+++ b/fs/smb/client/smb1ops.c
@@ -824,6 +824,11 @@ 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