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Edit File: files.pyc
� ��9Qc @ s� d Z d d d d d g Z d d l Z d d l Z d d l Z d d l Z d d l Z d Z d � Z g d � Z d � Z e e d � Z e e d � Z e e d � Z e e d � Z d S( s= This module contains helper functions for dealing with files.t issamefilet linkfilet copyfilet linkorcopyfilet overwrite_safelyi����Ni c C s1 t j | � } t j | � } t j j | | � S( N( t ost statt patht samestat( t path1t path2t s1t s2( ( s3 /usr/lib/python2.7/site-packages/slip/util/files.pyt _issamefile# s c C s? | t k r t } n y t | | � SWn | k r: t SXd S( sE Check whether two paths point to the same file (i.e. are hardlinked).N( t Truet ExceptionR t False( R R t catch_stat_exceptions( ( s3 /usr/lib/python2.7/site-packages/slip/util/files.pyR * s c C s� t | | d t �r d St j j | � } t j j | � } t j j | � } t } x t t j � D]n } t j d | t j d | � } y t j | | � Wn+ t k r� } | j t j k r� q� � qe Xt } Pqe W| r� t j | | � n d S( sU Hardlink srcpath to dstpath. Attempt to atomically replace dstpath if it exists.R Nt prefixt dir( R t OSErrorR R t abspatht dirnamet basenameR t xranget tempfilet TMP_MAXt mktempt extsept linkt errnot EEXISTR t rename( t srcpatht dstpatht dstdnamet dstbnamet hardlinkedt attemptt _dsttmpt e( ( s3 /usr/lib/python2.7/site-packages/slip/util/files.pyR 6 s$ c C s� t | | d t �r d St j j | � } t j j | � } t j j | � } t | d � } t j d | t j j d | d t � } t } | r� y t j | | j � t } Wq� t j t f k r� q� Xn | s� t j | | j � n d } xa | d k rT| j t � } y | j | � Wq� | j � | j � t j | j � � q� Xq� W| j � | j � t j | j | � | r�t j � d k r�t j | � n d S( s� Copy srcpath to dstpath. Abort operation if e.g. not enough space is available. Attempt to atomically replace dstpath if it exists.R Nt rbR R t deletet i ( R R R R R R R t openR t NamedTemporaryFileR R t shutilt copymodet nameR t Errort Nonet readt BLOCKSIZEt writet closet unlinkR t selinuxt is_selinux_enabledt restorecon( R! R" t copy_mode_from_dstt run_restoreconR# R$ t srcfilet dsttmpfilet mode_copiedt data( ( s3 /usr/lib/python2.7/site-packages/slip/util/files.pyR W s@ c C si y t | | � d SWn: t k rQ } | j t j t j t j f k rR � qR n Xt | | | | � d S( st First attempt to hardlink srcpath to dstpath, if hardlinking isn't possible, attempt copying srcpath to dstpath.N( R R R t EMLINKt EPERMt EXDEVR ( R! R" R; R< R( ( ( s3 /usr/lib/python2.7/site-packages/slip/util/files.pyR � s !c C s t j j | � } t j j | � } t } d } | rQ t j � d k rQ t } nl y8 t j | � \ } } | d k r� t d | � � n Wn1 t k r� } | j t j k r� t } q� � n X| s� t j | | � | r�t j | � q�nd } x� t t j � D]q } t j d | t j d | � } y t j | | � Wn. t k rk} | j t j k reqn � qX| } PqW| d k r�t t j d � � n | r�| r�t j | | � n y t j | | � Wn t j | � � n X| r�t j | � n d S( sp Create a symlink, optionally replacing dstpath atomically, optionally setting or preserving SELinux context.i s getfilecon(%r) failedR R s/ No suitable temporary symlink could be created.N( R R R R R R2 R8 R9 t lgetfilecont RuntimeErrorR R t ENOENTR t symlinkR: R R R R R R t IOErrort lsetfileconR t remove( R! R" t forcet preserve_contextR# R$ R< t ctxt retR( t dsttmpR& R' ( ( s3 /usr/lib/python2.7/site-packages/slip/util/files.pyt symlink_atomically� sR c C s� t j j | � } t j j | � } t j j | � } d } d } d } t j j | � } | r{ t j � d k r{ t } n zt j d | t j j d | � \ } } | r� | r� t j | | � n | r| rt j | � \ } } | d k rt d | � � qn t j | d � } d } | j | � | j � d } t j | | � | r|| rlt j | | � q|t j | � n Wd | r�| j � n | r�t j | � n | r�t j j | � r�y t j | � Wq�q�Xn Xd S( s� Safely overwrite a file by creating a temporary file in the same directory, writing it, moving it over the original file, eventually preserving file mode and SELinux context.i R R s getfilecon(%r) failedt wN( R R t realpathR R R2 t existsR8 R9 R R t mkstempR R. R/ t getfileconRE t fdopenR5 R6 R t setfileconR: t isfileR7 ( R t contentt preserve_modeRL t dir_t baset fdt ft tmpnameRS RN RM ( ( s3 /usr/lib/python2.7/site-packages/slip/util/files.pyR � sJ ( t __doc__t __all__R R8 R. R R R4 R R R R R R R RP R ( ( ( s3 /usr/lib/python2.7/site-packages/slip/util/files.pyt <module> s !6 ;