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modbus-rtu: don't use O_EXCL when opening the device #760

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modbus-rtu: don't use O_EXCL when opening the device #760

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Commits on Oct 22, 2024

  1. modbus-rtu: don't use O_EXCL when opening the device 

    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]>
    @mhei
    mhei committed Oct 22, 2024
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