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���c� � @ s d Z ddlZddlZdd� ZdS )z�A utility module which has FD-related functions.
This module mostly exists for L{clean_fds}, so it can be imported without
accidentally getting a reactor or something else that might create a critical
file descriptor.
� Nc C sR t �t j�d } td| �}td|�D ](}zt�|� W q$ tk
rJ Y q$X q$dS )z�Close all non-stdio file descriptors.
This should be called at the beginning of a program to avoid inheriting any
unwanted file descriptors from the invoking process. Unfortunately, this
is really common in unix!
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RLIMIT_NOFILE�min�range�os�close�OSError)Z
rlimit_nofileZtotal_descriptors�fd� r �2/usr/lib/python3/dist-packages/landscape/lib/fd.py� clean_fds s
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