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daemon.cpython-310.pyc
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If 'name' is null, then ovs.util.PROGRAM_NAME followed by ".pid" is used.N)r �_pidfiler r r r � set_pidfileO s r c C � da dS )z!Sets that we do not chdir to "/".FN)�_chdirr r r r � set_no_chdir[ s r c C r )z�Normally, daemonize() or daemonize_start() will terminate the program with a message if a locked pidfile already exists. If this function is called, an existing pidfile will be replaced, with a warning.TN)�_overwrite_pidfiler r r r �ignore_existing_pidfilea s r c C r )zzSets up a following call to daemonize() to detach from the foreground session, running this process in the background.TN��_detachr r r r � set_detachi � r c C s da t| �adS )z�Sets up a following call to daemonize() to fork a supervisory process to monitor the daemon and restart it if it dies due to an error signal. Used on Windows only.TN)� _detached�int� _daemonize_fd)�wpr r r � set_detachedp s r c C s t S )z Will daemonize() really detach?r r r r r � get_detachz s r! c C r )z�Sets up a following call to daemonize() to fork a supervisory process to monitor the daemon and restart it if it dies due to an error signal.TN)�_monitorr r r r � set_monitor r r# c C s( t �| � tj�d| � t�d� d S )N�%s � )�vlog�err�sys�stderr�write�exit)�msgr r r �_fatal� s r- c C s� t �� } tjdkrdt| f }tj�|� ndt }zt|d�a W n t y< } zt d||j f � W Y d}~nd}~ww z t � t �� �}W n t ya } zt d||j f � W Y d}~nd}~ww z t �d| � t �� W n ty� } zt d ||j f � W Y d}~nd}~ww z tjdkr�t�t tjtjB � n t�t tjtjB � W n t y� } zt d ||j f � W Y d}~nd}~ww tjdkr�tj�tt � n�tr�zt �|t� W n_ ty� } zt d |t|j f � W Y d}~nHd}~ww z t �|t� d }W n t�y } z |j}W Y d}~nd}~ww |tj k�r#t � n|tj k�r*nq�|�r:t d|tt � |�f � tj�t� t�sWtj� |�}|�rWt d|t � |�f � |j a!|j"a#dS )z�If a pidfile has been configured, creates it and stores the running process's pid in it. Ensures that the pidfile will be deleted when the process exits.r z%s.tmp%dz%s�wz%s: create failed (%s)Nz%s: fstat failed (%s)r$ z%s: write failed: %sz%s: fcntl failed: %sz"failed to rename "%s" to "%s" (%s)Tr z failed to link "%s" as "%s" (%s)z%s: unlink failed (%s))$�os�getpidr( �platformr r � fatal_signal�add_file_to_unlink�open� file_handle�IOErrorr- �strerror�fstat�filenor* �flush�OSError�fcntl�lockf�LOCK_EX�LOCK_NB�LOCK_SH� add_file_to_close_and_unlinkr �rename�link�errno�EEXIST�_check_already_running�EINTR�unlink_file_now�st_dev� _pidfile_dev�st_ino� _pidfile_ino)�pid�tmpfile�e�s�errorr r r � _make_pidfile� s� �� �� �� � �� ��� �� � � � rR c C s t � t� dS )ztIf configured with set_pidfile() or set_detach(), creates the pid file and detaches from the foreground session.N)�daemonize_start�daemonize_completer r r r � daemonize� s rU c C sP zt �| |�W S ty' } z|jtjkr |j dfW Y d }~S d }~ww )NTr )r/ �waitpidr; rD rG )rM �optionsrO r r r �_waitpid� s ��rX c C s� t jdkrt� S zt�� \} }W n# ty3 } zt j�dt�|j � � t � d� W Y d }~nd }~ww zt� � }W n# ty] } zt j�dt�|j � � t � d� W Y d }~nd }~ww |dkr�t� |� t j� � z t�| d�}d}W n ty� } z d}|j }W Y d }~nd }~ww |t jkr�nqmt|�dkr�t|d�\}}||kr�t�|�r�t�|�r�t � t�|�� n$t j�dt j�|� � n|dk s�J �t j�d t�| � � t � d� t� | � |S t� | � t j�� |a|S ) Nr zpipe failed: %s r% zcould not fork: %s r Tr z)fork child failed to signal startup (%s) zwaitpid failed (%s) )r( r1 �"_fork_and_wait_for_startup_windowsr/ �piper; r) r* r7 rD r+ �fork�closer r2 �readrG �lenrX � WIFEXITED� WEXITSTATUS�process� status_msg�timeval�postforkr )�rfd�wfdrO rM rP rQ �retval�statusr r r �_fork_and_wait_for_startup� sd �� �� �� � � � � ri c C sp t r tj�� dS t�� zt�� \} }W n! tj y7 } zt j � d|j � t �d� W Y d }~nd }~ww z#tj}dt jd�t j�t|�f }tj|dd|t jt j d�}|j}W n# ty~ } zt j � dt� |j� � t �d� W Y d }~nd }~ww tj � |� tj � � t� | d�\}}|r�d }t!|�dkr�|�"� } | dkr�t j � d � nt �| � tj � | � |S ) Nr zpipe failed to create: %s r% z%s %s --pipe-handle=%ld� F)�args� close_fds�shell� creationflags�stdoutr) zCreateProcess failed (%s) r z$fork child failed to signal startup )#r r rc rd r& �close_log_file�winutils�windows_create_pipe� pywintypesrQ r( r) r* r7 r+ � win32process�DETACHED_PROCESS� executable�join�argvr � subprocess�Popenro rM r; r/ rD � win32file� CloseHandler2 r[ �windows_read_piper^ �wait) re rf rO � creationFlagsrk �procrM rQ rP rg r r r rY * sV ���� �� rY c C s\ t jdkr t| � d S | d ur,tj�| d�\}}|r%t j�d� t �d� t � | � d S d S )Nr �0zcould not write to pipe r% ) r( r1 � _fork_notify_startup_windowsr � socket_util� write_fullyr) r* r+ r/ r\ )�fdrQ � bytes_writtenr r r �_fork_notify_startup` s �r� c C sp | d ur6z t j�| dd � W d S t jjy5 } ztj�dt� |j � � t� d� W Y d }~d S d }~ww d S )N� 0z could not write to pipe: %s r% ) rq r{ � WriteFilers rQ r( r) r* r/ r7 �winerrorr+ )r� rO r r r r� m s ����r� c C sr t jdkr| d? }|tkrdS dS t�| �r t�| �tkr dS t�| �r7dD ]}t�| �tt |d �kr6 dS q&dS )Nr � TF) �SIGABRT�SIGALRM�SIGBUS�SIGFPE�SIGILL�SIGPIPE�SIGSEGV�SIGXCPU�SIGXFSZ) r( r1 �RESTART_EXIT_CODEr/ r_ r` � WIFSIGNALED�WTERMSIG�getattr�signal)rh � exit_status�signamer r r �_should_restartz s �r� c C sR d } t | d�\}}|dk rtj�d� t�d� n�|| kr�d| tj�|�f }t|�r�tj dkrOt � |�rOz t � t jd� W n t jyN t�d� Y nw |d ur�tj�� |d k r�t�d | � tj�� }|d }||krrntj�d || d � t�|| d � qdtj�� }t�d | � t� } | s�d S n t�d| � t�d� q)NTr zwaitpid failed r% zpid %d died, %sr )r r z failed to disable core dumpsi' z/%s, waiting until 10 seconds since last restartz sleep %f g @�@z%s, restartingz %s, exiting)rX r( r) r* r+ r ra rb r� r1 r/ � WCOREDUMP�resource� setrlimit� RLIMIT_CORErQ r& �warnrc �msecro �time�sleepr' ri �info)� daemon_pid� last_restartrg rh rb �now�wakeupr r r �_monitor_daemon� sR ��� �� � �r� c C s> t j�� } | dkr t�| d� t�| d� t�| d� dS dS )z�Close stdin, stdout, stderr. If we're started from e.g. an SSH session, then this keeps us from holding that session open artificially.r r% � N)r r� � get_null_fdr/ �dup2)�null_fdr r r �_close_standard_fds� s �r� c C sr t rt� dkr t�d� tjdkrt�� tr0t} t� }|dkr0t | � tjdkr,t � t |� t r7t � dS dS )aI If daemonization is configured, then starts daemonization, by forking and returning in the child process. The parent process hangs around until the child lets it know either that it completed startup successfully (by calling daemon_complete()) or that it failed to start up (by exiting with a nonzero exit code).r r N)r ri r( r+ r1 r/ �setsidr" r r� r� r� r rR )�saved_daemonize_fdr� r r r rS � s �rS c C s( t t� trtr t�d� t� dS dS )z�If daemonization is configured, then this function notifies the parent process that the child process has completed startup successfully.�/N)r� r r r r/ �chdirr� r r r r rT � s �rT c C s t j�dtjjtjjf � d S )Nz� Daemon options: --detach run in background as daemon --no-chdir do not chdir to '/' --pidfile[=FILE] create pidfile (default: %s/%s.pid) --overwrite-pidfile with --pidfile, start even if already running )r( ro r* r r r r r r r r r �usage� s �r� c C s� t d ur$zt�| �}|jtkr|jt krt�� W S W n ty# Y nw zt| d�}W n/ t yZ } z#|j t j krB|rBW Y d }~dS t � d| |jf � |j W Y d }~S d }~ww z�t�|tjtjB � |sx|�� t � d| � t j W S z d}t�| �}t�|�� �}|j|jks�|j|jkr�d}W n t y� d}Y nw |r�t � d| � t j W S zt�| � W n! t y� } zt � d| |jf � |j W Y d }~W S d }~ww t �d | � |�� W dS t �y } z$|j t jt jfv�r t � d | |jf � |j W Y d }~S W Y d }~nd }~ww zQzt |� � �}W n5 t �yB } zt � d | |jf � |j }W Y d }~nd }~w t �yV t � d | � t j }Y nw |W z|�� W S t �yi Y S w z|�� W w t �yz Y w w ) Nzr+r z %s: open: %sz%s: pid file is staleFTz %s: lost race to delete pidfilez'%s: failed to delete stale pidfile (%s)z%s: deleted stale pidfilez %s: fcntl: %sz %s: read: %sz%s does not contain a pid) rJ r/ �statrK rL rI r0 r; r4 r6 rD �ENOENTr& r� r7 r< r= r> r? r\ �ESRCHr8 r9 �EALREADY�unlink�dbg�EACCES�EAGAINr �readline� ValueError�EINVAL)�pidfile�delete_if_stalerP r5 rO �raced�s2rQ r r r �__read_pidfile� s� � ��� � � ��� ���� � �� �r� c C s t | d�S )ztOpens and reads a PID from 'pidfile'. Returns the positive PID if successful, otherwise a negative errno value.F)r� )r� r r r � read_pidfileO s r� c C sL t td�} | dkrtdt| f � d S | dk r$tdtt�| �f � d S d S )NTr z'%s: already running as pid %d, abortingz'%s: pidfile check failed (%s), aborting)r� r r- r/ r7 )rM r r r rF U s ��rF c C s� t d�}| jdd�}|jdddd� |jddd d� |jd dd tjj d� |jd d |d| d� |jdddd� tjdkrG|jddd� dS dS )z�Populates 'parser', an ArgumentParser allocated using the argparse module, with the command line arguments required by the daemon module.NzDaemon Options)�titlez--detach� store_truez Run in background as a daemon.)�action�helpz --no-chdirzDo not chdir to '/'.z --monitorzMonitor %s process.z --pidfile�?z Create pidfile (default %s).)�nargs�constr� z--overwrite-pidfilez.With --pidfile, start even if already running.r z --pipe-handle)r� )r �add_argument_group� add_argumentr r r r( r1 )�parserr� �groupr r r �add_args^ s, �� � �� ��r� c C sb t jdkr | jr t| j� | jrt� | jrt� | jr!t | j� | j r't � | j r/t � dS dS )z�Handles daemon module settings in 'args'. 'args' is an object containing values parsed by the parse_args() method of ArgumentParser. The parent ArgumentParser should have been prepared by add_args() before calling parse_args().r N)r( r1 � pipe_handler �detachr �no_chdirr r� r �overwrite_pidfiler �monitorr# )rk r r r � handle_argsu s �r� )>rD r/ r� r( r� �ovs.dirsr �ovs.fatal_signal� ovs.process�ovs.socket_util� ovs.timeval�ovs.util�ovs.vlogr1 r< r� � ovs.winutilsrq � ovs.fcntl_win� fcntl_winrs ry rt r& �Vlogr r r rJ rL r r r" r r� r r r r r r r! r# r- rR rU rX ri rY r� r� r� r� r� rS rT r� r� r� rF r� r� r r r r �<module> st T 96 / Q