SMB3: Honor 'seal' flag for multiuser mounts

commit cc15461c73d7d044d56c47e869a215e49bd429c8 upstream.

Ensure multiuser SMB3 mounts use encryption for all users' tcons if the
mount options are configured to require encryption. Without this, only
the primary tcon and IPC tcons are guaranteed to be encrypted. Per-user
tcons would only be encrypted if the server was configured to require
encryption.

Signed-off-by: Paul Aurich <paul@darkrain42.org>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index fd8d886e09390d0cb29400f54a7e7be5eb864e60..ba0ad4906ad11b9b0bdade441c271b50dfa55f51 100644 (file)
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -5310,6 +5310,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
        vol_info->linux_ext = master_tcon->posix_extensions;
        vol_info->sectype = master_tcon->ses->sectype;
        vol_info->sign = master_tcon->ses->sign;
+       vol_info->seal = master_tcon->seal;
 
        rc = cifs_set_vol_auth(vol_info, master_tcon->ses);
        if (rc) {