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[3.14] bpo-41839: Fix error checking in sched_get_priority_ functions (GH-22374) #138201

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Merged
merged 2 commits into from
Oct 8, 2025
Merged

[3.14] bpo-41839: Fix error checking in sched_get_priority_ functions (GH-22374) #138201

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e1e5005
bpo-41839: Fix error checking in sched_get_priority_ functions (GH-22…
kulikjak Aug 27, 2025
b3867c6
Merge branch '3.14' into backport-bbcb75c-3.14
encukou Oct 7, 2025
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2020-09-23-11-54-17.bpo-41839.kU5Ywl.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
Allow negative priority values from :func:`os.sched_get_priority_min` and
:func:`os.sched_get_priority_max` functions.
12 changes: 7 additions & 5 deletions Modules/posixmodule.c
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Expand Up @@ -8186,10 +8186,10 @@ static PyObject *
os_sched_get_priority_max_impl(PyObject *module, int policy)
/*[clinic end generated code: output=9e465c6e43130521 input=2097b7998eca6874]*/
{
int max;

max = sched_get_priority_max(policy);
if (max < 0)
/* make sure that errno is cleared before the call */
errno = 0;
int max = sched_get_priority_max(policy);
if (max == -1 && errno)
return posix_error();
return PyLong_FromLong(max);
}
Expand All @@ -8207,8 +8207,10 @@ static PyObject *
os_sched_get_priority_min_impl(PyObject *module, int policy)
/*[clinic end generated code: output=7595c1138cc47a6d input=21bc8fa0d70983bf]*/
{
/* make sure that errno is cleared before the call */
errno = 0;
int min = sched_get_priority_min(policy);
if (min < 0)
if (min == -1 && errno)
return posix_error();
return PyLong_FromLong(min);
}
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