[PATCH 6.1.y 3/4] cifs: SMB1 split: Create smb1proto.h for SMB1 declarations

[Sasha Levin <sashal@kernel.org>]

From: David Howells <dhowells@redhat.com>

[ Upstream commit 86c666506ea2c42649879eeac7f29e7bedef2f23 ]

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Paulo Alcantara <pc@manguebit.org>
cc: Enzo Matsumiya <ematsumiya@suse.de>
cc: linux-cifs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
cc: linux-kernel@vger.kernel.org
Acked-by: Enzo Matsumiya <ematsumiya@suse.de>
Signed-off-by: Steve French <stfrench@microsoft.com>
Stable-dep-of: 730d0bb19507 ("smb: client: fix UAF and buffer leak in cifs_check_trans2() for malformed secondary T2")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/smb/client/cifsglob.h      |  2 --
 fs/smb/client/cifsproto.h     | 11 +---------
 fs/smb/client/smb1proto.h     | 40 +++++++++++++++++++++++++++++++++++
 fs/smb/client/smb1transport.c |  2 +-
 4 files changed, 42 insertions(+), 13 deletions(-)
 create mode 100644 fs/smb/client/smb1proto.h

diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index a5e9f79c10f90..8717f85328cf1 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -1995,8 +1995,6 @@ extern mempool_t *cifs_mid_poolp;
 
 /* Operations for different SMB versions */
 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
-extern struct smb_version_operations smb1_operations;
-extern struct smb_version_values smb1_values;
 extern struct smb_version_operations smb20_operations;
 extern struct smb_version_values smb20_values;
 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
diff --git a/fs/smb/client/cifsproto.h b/fs/smb/client/cifsproto.h
index e23a3dcf96af4..ee5c5dda06942 100644
--- a/fs/smb/client/cifsproto.h
+++ b/fs/smb/client/cifsproto.h
@@ -12,6 +12,7 @@
 #ifdef CONFIG_CIFS_DFS_UPCALL
 #include "dfs_cache.h"
 #endif
+#include "smb1proto.h"
 
 struct statfs;
 struct smb_rqst;
@@ -416,16 +417,6 @@ extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
 			      struct cifsFileInfo *cfile, __u64 size,
 			      bool set_allocation);
 
-struct cifs_unix_set_info_args {
-	__u64	ctime;
-	__u64	atime;
-	__u64	mtime;
-	__u64	mode;
-	kuid_t	uid;
-	kgid_t	gid;
-	dev_t	device;
-};
-
 extern int CIFSSMBUnixSetFileInfo(const unsigned int xid,
 				  struct cifs_tcon *tcon,
 				  const struct cifs_unix_set_info_args *args,
diff --git a/fs/smb/client/smb1proto.h b/fs/smb/client/smb1proto.h
new file mode 100644
index 0000000000000..8dfc6976ceba1
--- /dev/null
+++ b/fs/smb/client/smb1proto.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002,2008
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ */
+#ifndef _SMB1PROTO_H
+#define _SMB1PROTO_H
+
+struct cifs_unix_set_info_args {
+	__u64	ctime;
+	__u64	atime;
+	__u64	mtime;
+	__u64	mode;
+	kuid_t	uid;
+	kgid_t	gid;
+	dev_t	device;
+};
+
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
+
+/*
+ * cifssmb.c
+ */
+
+/*
+ * smb1ops.c
+ */
+extern struct smb_version_operations smb1_operations;
+extern struct smb_version_values smb1_values;
+
+/*
+ * smb1transport.c
+ */
+bool cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
+		       char *buf, int malformed);
+
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
+#endif /* _SMB1PROTO_H */
diff --git a/fs/smb/client/smb1transport.c b/fs/smb/client/smb1transport.c
index a27206cb1fc89..b79256be7380d 100644
--- a/fs/smb/client/smb1transport.c
+++ b/fs/smb/client/smb1transport.c
@@ -382,7 +382,7 @@ cifs_downgrade_oplock(struct TCP_Server_Info *server,
 	cifs_set_oplock_level(cinode, oplock);
 }
 
-static bool
+bool
 cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
 		  char *buf, int malformed)
 {
-- 
2.53.0