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The function has no side effects; the device configuration remain unchanged.”…””}”(hj6hžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hèhŸh³h K%hj%hžhubhé)”}”(hŒŽWhen the device is opened in read-only mode, attempts to modify its configuration will result in an error, and ``errno`` will be set to EBADF.”h]”(hŒoWhen the device is opened in read-only mode, attempts to modify its configuration will result in an error, and ”…””}”(hjyhžhhŸNh Nubjˆ)”}”(hŒ ``errno``”h]”hŒerrno”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j‡hjyubhŒ will be set to EBADF.”…””}”(hjyhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hèhŸh³h K)hj%hžhubeh}”(h]”Œdescription”ah ]”h"]”Œdescription”ah$]”h&]”uh1hÂhhÄhžhhŸh³h K#ubhÃ)”}”(hhh]”(hÈ)”}”(hŒReturn Value”h]”hŒReturn Value”…””}”(hj¤hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÇhj¡hžhhŸh³h K.ubhé)”}”(hŒ”:c:func:`open()` returns the new file descriptor on success. On error, -1 is returned, and ``errno`` is set appropriately. 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