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Current File : //lib/python2.7/site-packages/certbot/_internal/lock.pyo
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��YZdefd��YZdS(sZImplements file locks compatible with Linux and Windows for locking files and directories.i����N(tOptional(terrors(t
filesystem(toscCsttjj|d��S(s3Place a lock file on the directory at dir_path.

    The lock file is placed in the root of dir_path with the name
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    :param str dir_path: path to directory

    :returns: the locked LockFile object
    :rtype: LockFile

    :raises errors.LockError: if unable to acquire the lock

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.certbot.lock(tLockFileRtpathtjoin(tdir_path((s:/usr/lib/python2.7/site-packages/certbot/_internal/lock.pytlock_dirsRcBs;eZdZd�Zd�Zd�Zd�Zd�ZRS(s�
    Platform independent file lock system.
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    meaning that if another instance of Certbot try at the same time to acquire the same lock,
    it will raise an Exception. Calling release method will release the lock, and make it
    available to every other instance.
    Upon exit, Certbot will also release all the locks.
    This allows us to protect a file or directory from being concurrently accessed
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    LockFile is platform independent: it will proceed to the appropriate OS lock mechanism
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        Create a LockFile instance on the given file path, and acquire lock.
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        Acquire the lock on the file, forbidding any other Certbot instance to acquire it.
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					t_BaseLockMechanismcBs,eZd�Zd�Zd�Zd�ZRS(cCs||_d|_dS(sk
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        N(RR(R((s:/usr/lib/python2.7/site-packages/certbot/_internal/lock.pyRnscCsdS(N((R((s:/usr/lib/python2.7/site-packages/certbot/_internal/lock.pyRvscCsdS(N((R((s:/usr/lib/python2.7/site-packages/certbot/_internal/lock.pyRys(RRRRRR(((s:/usr/lib/python2.7/site-packages/certbot/_internal/lock.pyRds				RcBs2eZdZd�Zd�Zd�Zd�ZRS(s�
    A UNIX lock file mechanism.
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        Did we successfully grab the lock?
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RR1R2R	tOSErrorR*tENOENTtFalsetst_devtst_ino(RR$R1R2tstat1R0tstat2((s:/usr/lib/python2.7/site-packages/certbot/_internal/lock.pyR"�scCs[ztj|j�Wd|jdkr5td��nztj|j�Wdd|_XXdS(s)Remove, close, and release the lock file.NsError, self._fd is None.(RtremoveR	RRt	TypeErrorR#(R((s:/usr/lib/python2.7/site-packages/certbot/_internal/lock.pyR�s(RRRRR!R"R(((s:/usr/lib/python2.7/site-packages/certbot/_internal/lock.pyR}s
			RcBs eZdZd�Zd�ZRS(s"
    A Windows lock file mechanism.
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    and io.open in Python. So an explicit lock needs to be done through the call of
    msvcrt.locking, that will lock the first byte of the file. In theory, it is also
    possible to access a file in shared delete access, allowing other processes to delete an
    opened file. But this needs also to be done explicitly by all processes using the Windows
    low level APIs, and Python does not do it. As of Python 3.7 and below, Python developers
    state that deleting a file opened by a process from another process is not possible with
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|�n|jtjkr��ntjd|j�tjd��nX||_dS(sAcquire the locki�is(A lock on %s is held by another process.s/Another instance of Certbot is already running.N(RtO_RDWRRtO_TRUNCRRRR	tmsvcrttlockingtLK_NBLCKR)R3R#R*R+R-R.RR/R(Rt	open_modeR$R0((s:/usr/lib/python2.7/site-packages/certbot/_internal/lock.pyR�scCs{zjtj|jtjd�tj|j�ytj|j�Wn&tk
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	;X

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