Whenever new parameter is added to smb configuration, It is possible
to break the execution of the IPC daemon by mismatch size of
request/response. This patch tries to reserve space in ipc request/response
in advance to prevent that.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Add smb2 max credits parameter to adjust maximum credits value to limit
number of outstanding requests.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
To avoid dictionary attacks (repeated session setups rapidly sent) to
connect to server, ksmbd make a delay of a 5 seconds on session setup
failure to make it harder to send enough random connection requests
to break into a server if a user insert the wrong password 10 times
in a row.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reorder and document on-disk and netlink structures in headers.
This is a userspace ABI to communicate data between ksmbd and user IPC
daemon using netlink. This is added to track and cache user account DB
and share configuration info from userspace.
- KSMBD_EVENT_HEARTBEAT_REQUEST(ksmbd_heartbeat)
This event is to check whether user IPC daemon is alive. If user IPC
daemon is dead, ksmbd keep existing connection till disconnecting and
new connection will be denied.
- KSMBD_EVENT_STARTING_UP(ksmbd_startup_request)
This event is to receive the information that initializes the ksmbd
server from the user IPC daemon and to start the server. The global
section parameters are given from smb.conf as initialization
information.
- KSMBD_EVENT_SHUTTING_DOWN(ksmbd_shutdown_request)
This event is to shutdown ksmbd server.
- KSMBD_EVENT_LOGIN_REQUEST/RESPONSE(ksmbd_login_request/response)
This event is to get user account info to user IPC daemon.
- KSMBD_EVENT_SHARE_CONFIG_REQUEST/RESPONSE
(ksmbd_share_config_request/response)
This event is to get net share configuration info.
- KSMBD_EVENT_TREE_CONNECT_REQUEST/RESPONSE
(ksmbd_tree_connect_request/response)
This event is to get session and tree connect info.
- KSMBD_EVENT_TREE_DISCONNECT_REQUEST(ksmbd_tree_disconnect_request)
This event is to send tree disconnect info to user IPC daemon.
- KSMBD_EVENT_LOGOUT_REQUEST(ksmbd_logout_request)
This event is to send logout request to user IPC daemon.
- KSMBD_EVENT_RPC_REQUEST/RESPONSE(ksmbd_rpc_command)
This event is to make DCE/RPC request like srvsvc, wkssvc, lsarpc,
samr to be processed in userspace.
- KSMBD_EVENT_SPNEGO_AUTHEN_REQUEST/RESPONSE
(ksmbd_spnego_authen_request/response)
This event is to make kerberos authentication to be processed in
userspace.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
