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Base class for communication classes.
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Connect to criu and return socket object.
daemon -- is for whether or not criu should daemonize if executing criu from binary(comm_bin).
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Disconnect from criu.
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Communication class for unix socket.
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Communication class for file descriptor.
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I s �z_criu_comm_fd.connectc C s | j �� d S r r r r r r r O s z_criu_comm_fd.disconnectNr! r r r r r" @ s r" c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) �_criu_comm_binz)
Communication class for binary.
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CRIUExceptionz?
Exception class for handling and storing criu errors.
Nc C s | j S r )�_strr r r r �__str__� s zCRIUException.__str__)r
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Exception class for handling and storing internal errors.
c C s" || _ dtj�| j �|f | _d S )Nz!%s failed with internal error: %s)r> �rpc�
criu_req_type�Namer< )r r> �sr r r r � s �z CRIUExceptionInternal.__init__N)r
r r r r r r r r r? � s r? c @ s e Zd ZdZdd� Zdd� ZdS )�CRIUExceptionExternalzC
Exception class for handling and storing criu RPC errors.
c C s || _ || _|| _| �� | _d S r )r> �resp_typ�errno�_gen_error_strr< )r Zreq_typrE rF r r r r � s z CRIUExceptionExternal.__init__c C s� dt j�| j�f }| j| jkr0|d| jf 7 }|d| jf 7 }| jtjkrV|d7 }nL| jt jkrx| jtjkrx|d7 }n*| jt j kr�| jtj
kr�|d7 }n|d7 }|S )Nz %s failed: z Unexpected response type %d: z Error(%d): z Bad optionszNo process with such pidz)Process with requested pid already existsZUnknown) r@ rA rB r> rE rF ZEBADRQC�DUMPZESRCH�RESTOREZEEXIST)r rC r r r rG � s
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Call criu through RPC.
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Access criu using unix socket which that belongs to criu service daemon.
N)r �_comm)r Zsk_namer r r �use_sk� s z criu.use_skc C s t |�| _dS )z0
Access criu using provided fd.
N)r" rN r# r r r �use_fd� s z criu.use_fdc C s t |�| _dS )zO
Access criu by execing it using provided path to criu binary.
N)r% rN )r Zbin_namer r r rL � s zcriu.use_binaryc
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As simple as send request and receive response.
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&z criu._send_req_and_recv_respc C sD t �� }t j|_|j�| j� | �|�}|js@t|j|j|j ��dS )zB
Checks whether the kernel support is up-to-date.
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r@ �criu_reqZCHECKrR rM � MergeFromr[ �successrD �cr_errno�r rW rY r r r �check s
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criu.checkc C sF t �� }t j|_|j�| j� | �|�}|js@t|j|j|j ��|j
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Checkpoint a process/tree identified by opts.pid.
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z criu.dumpc C sF t �� }t j|_|j�| j� | �|�}|js@t|j|j|j ��|j
S rb ) r@ r\ ZPRE_DUMPrR rM r] r[ r^ rD r_ rc r` r r r �pre_dump+ s
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criu.pre_dumpc C sF t �� }t j|_|j�| j� | �|�}|js@t|j|j|j ��|j
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Restore a process/tree.
) r@ r\ rI rR rM r] r[ r^ rD r_ �restorer` r r r re : s
z criu.restorec C sL t �� }t j|_|j�| j� d|_| �|�}|jsFt |j|j|j
��|j S )NT) r@ r\ ZPAGE_SERVER_CHLDrR rM r] rS r[ r^ rD r_ Zpsr` r r r �page_server_chldI s
zcriu.page_server_chldc C s> t �� }t j|_||_| �|�}|js8t|j|j|j��|j S r )
r@ r\ ZWAIT_PIDrR rQ r[ r^ rD r_ �status)r rQ rW rY r r r �wait_pidV s
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