SMB3: Honor 'seal' flag for multiuser mounts

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>

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 5fac34f192afd8f96ba125c0036905d7c962e1be..804509f7f3a178f7c08820d2a918c18f38196dba 100644 (file)
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -5309,6 +5309,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
        vol_info->no_linux_ext = !master_tcon->unix_ext;
        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) {