Message 131947 - Python tracker

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In-reply-to
Author	Ben.Darnell
Recipients	Ben.Darnell
Date	2011年03月24日.00:57:23
SpamBayes Score	0.00041725524
Marked as misclassified	No
Message-id	<1300928246.81.0.834552598366.issue11657@psf.upfronthosting.co.za>

Content
Line 125 of multiprocessing.c is "CMSG_DATA(cmsg) = fd;". CMSG_DATA returns an unsigned char, while fd is an int, so this code does not support file descriptors > 256 (additionally, I'm not sure if the buffer is guaranteed to be initialized with zeros).  recvfd has an analogous problem at line 168. Both of these need to be changed to copy the entire integer, e.g. by casting the result of CMSG_DATA to an int*. http://hg.python.org/cpython/file/5deb2094f033/Modules/_multiprocessing/multiprocessing.c

Content

Line 125 of multiprocessing.c is "*CMSG_DATA(cmsg) = fd;". CMSG_DATA returns an unsigned char*, while fd is an int, so this code does not support file descriptors > 256 (additionally, I'm not sure if the buffer is guaranteed to be initialized with zeros).  recvfd has an analogous problem at line 168. Both of these need to be changed to copy the entire integer, e.g. by casting the result of CMSG_DATA to an int*.
http://hg.python.org/cpython/file/5deb2094f033/Modules/_multiprocessing/multiprocessing.c

History
Date	User	Action	Args
2011年03月24日 00:57:26	Ben.Darnell	set	recipients: + Ben.Darnell
2011年03月24日 00:57:26	Ben.Darnell	set	messageid: <1300928246.81.0.834552598366.issue11657@psf.upfronthosting.co.za>
2011年03月24日 00:57:23	Ben.Darnell	link	issue11657 messages
2011年03月24日 00:57:23	Ben.Darnell	create

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