文件操作 - lock.cpython-310.pyc
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文件: /usr/lib/python3/dist-packages/landscape/lib/__pycache__/lock.cpython-310.pyc
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o ���c� � @ s6 d dl Z d dlZd dlZG dd� de�Zddd�ZdS )� Nc @ s e Zd ZdZdS )� LockErrorz"Raised when unable to lock a file.N)�__name__� __module__� __qualname__�__doc__� r r �4/usr/lib/python3/dist-packages/landscape/lib/lock.pyr s r c s� t �| t j�� t�� tjd�}|tjO }t�� tj|� t�� } z t�� tj tj B � W n t yB |t�� | k r@t d��Y nw nt� d� q!� fdd�}|S )Nr TzCouldn't obtain lockg�������?c s t �� t j� t�� � d S )N)�fcntl�flock�LOCK_UN�os�closer ��fdr r � unlock_path s z lock_path.<locals>.unlock_path)r �open�O_CREATr �F_GETFD� FD_CLOEXEC�F_SETFD�timer �LOCK_EX�LOCK_NB�IOErrorr �sleep)�path�timeout�flags�startedr r r r � lock_path s$ �� � r )r )r r r � Exceptionr r r r r r �<module> s
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