modbus-rtu: don't use O_EXCL when opening the device #760
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Quote from 'man 2 open': -snip- ... In general, the behavior of O_EXCL is undefined if it is used without O_CREAT. ... -snap- Since we don't create the device file here - we just want to open (hopefully) existing ones - let's simply drop this flag to be on the safe side. Signed-off-by: Michael Heimpold <[email protected]>
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Quote from 'man 2 open':
-snip-
...
In general, the behavior of O_EXCL is undefined if it is used without O_CREAT. ...
-snap-
Since we don't create the device file here - we just want to open (hopefully) existing ones - let's simply drop this flag to be on the safe side.