New submission from Tjeerd Pinkert :
If I use os.setgid and os.setuid to switch to an other user in some daemon
code, I cannot open the serial port anymore. If I run the same code directly
from the user I can open the serial port. Since the serial module is using the
open() call to open the
Changes by Tjeerd Pinkert :
--
type: -> behavior
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<http://bugs.python.org/issue10032>
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Tjeerd Pinkert added the comment:
Indeed I use Linux, sorry for the inconvenience of not mentioning.
Thanks Ned, I think this is indeed the case. Using os.setgroups with a list of
group ids (one for the file access, one for the serial port) before switching
user with os.setgid, os.setuid
