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gh-96819: check if the length of a pipe write is not greater than 512 #96890

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Merged
JelleZijlstra merged 8 commits into from
Oct 3, 2022
Merged

gh-96819: check if the length of a pipe write is not greater than 512 #96890

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2efc372
fix: check the length of `msg`, not the length of `name`
saito828koki Sep 17, 2022
476bed0
📜🤖 Added by blurb_it.
blurb-it[bot] Sep 17, 2022
ee548f9
fix: remove backticks
saito828koki Sep 17, 2022
1566b72
fix: update error message
saito828koki Sep 20, 2022
3f32cb6
modify NEWS entry
saito828koki Sep 20, 2022
1039648
Add a test for too long name resources
saito828koki Oct 1, 2022
30f651c
Modify NEWS entry
saito828koki Oct 1, 2022
6c3afb9
Modify NEWS entry
saito828koki Oct 1, 2022
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fix: update error message
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@saito828koki
saito828koki committed Sep 20, 2022
commit 1566b72c11ed89916c9fef1214fb35c98a4a40b6
2 changes: 1 addition & 1 deletion Lib/multiprocessing/resource_tracker.py
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Original file line number Diff line number Diff line change
Expand Up @@ -164,7 +164,7 @@ def _send(self, cmd, name, rtype):
if len(msg) > 512:
# posix guarantees that writes to a pipe of less than PIPE_BUF
# bytes are atomic, and that PIPE_BUF >= 512
raise ValueError('name too long')
raise ValueError('msg too long')
nbytes = os.write(self._fd, msg)
assert nbytes == len(msg), "nbytes {0:n} but len(msg) {1:n}".format(
nbytes, len(msg))
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