o ¯b¨ ã@s¾dZddlZddlZddlmZddlmZGdd„deƒZde fdd „Z d e d ed e de fd d„Z d e de ddfdd„Z dej ddfdd„Zej d¡ZesSedƒ‚ej e¡ZeeƒdS)zŒ Very low-level ctypes-based interface to Linux inotify(7). ctypes and a version of libc which supports inotify system calls are required. éN)Úcast)ÚFilePathc@seZdZdZdS)Ú INotifyErrorzR Unify all the possible exceptions that can be raised by the INotify API. N)Ú__name__Ú __module__Ú __qualname__Ú__doc__©r r ú9/usr/lib/python3/dist-packages/twisted/python/_inotify.pyrsrÚreturncCs"ttt ¡ƒ}|dkrtdƒ‚|S)zO Create an inotify instance and return the associated file descriptor. rzINotify initialization error.)rÚintÚlibcÚ inotify_initr)Úfdr r r ÚinitsrrÚpathÚmaskcCs<ttt || ¡j|¡ƒ}|dkrtd|›d|›dƒ‚|S)a/ Add a watch for the given path to the inotify file descriptor, and return the watch descriptor. @param fd: The file descriptor returned by C{libc.inotify_init}. @param path: The path to watch via inotify. @param mask: Bitmask specifying the events that inotify should monitor. rzFailed to add watch on 'z' - (ú))rr r Úinotify_add_watchÚ asBytesModerr)rrrÚwdr r r Úadd#s rrcCst ||¡dS)zM Remove the given watch descriptor from the inotify file descriptor. N)r Úinotify_rm_watch)rrr r r Úremove2srr cCspdD]}t||dƒdurtdƒ‚qg|j_tj|j_tjtjg|j_tj|j_tjtjtj g|j _tj|j _dS)zµ Initialize the module, checking if the expected APIs exist and setting the argtypes and restype for C{inotify_init}, C{inotify_add_watch}, and C{inotify_rm_watch}. )rrrNzlibc6 2.4 or higher needed) ÚgetattrÚ ImportErrorrÚargtypesÚctypesÚc_intÚrestyperÚc_char_pÚc_uint32r)r Úfunctionr r r ÚinitializeModuleMsÿ  r#ÚczCan't find C library.)rrÚ ctypes.utilÚtypingrÚtwisted.python.filepathrÚ Exceptionrr rrrÚCDLLr#ÚutilÚ find_libraryÚnamerÚcdllÚ LoadLibraryr r r r r Ús