https://github.com/python/cpython/commit/ac0b2b82e553987824ac35a228f7bb7d8f2486ab commit: ac0b2b82e553987824ac35a228f7bb7d8f2486ab branch: 3.14 author: Miss Islington (bot) <[email protected]> committer: serhiy-storchaka <[email protected]> date: 2026-07-24T11:45:34Z summary:
[3.14] gh-154435: Fix os.posix_fadvise() and os.posix_fallocate() on DragonFly BSD (GH-154436) (GH-154452) They return -1 and set errno instead of returning the error number, so OSError was raised with a meaningless error code. (cherry picked from commit 08a0d10709f04cf03260e5e852381cecb1c531e1) Co-authored-by: Serhiy Storchaka <[email protected]> Co-authored-by: Claude Opus 4.8 <[email protected]> files: A Misc/NEWS.d/next/Library/2026-07-22-10-30-08.gh-issue-154435.xCxm0T.rst M Modules/posixmodule.c diff --git a/Misc/NEWS.d/next/Library/2026-07-22-10-30-08.gh-issue-154435.xCxm0T.rst b/Misc/NEWS.d/next/Library/2026-07-22-10-30-08.gh-issue-154435.xCxm0T.rst new file mode 100644 index 00000000000000..b468e929b1ca18 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2026-07-22-10-30-08.gh-issue-154435.xCxm0T.rst @@ -0,0 +1,3 @@ +Fix :func:`os.posix_fadvise` and :func:`os.posix_fallocate` on DragonFly BSD: +they raised :exc:`OSError` with a meaningless error code, +because these functions return -1 and set ``errno`` there. diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c index 06928025490ac8..26e62a1a7c50dc 100644 --- a/Modules/posixmodule.c +++ b/Modules/posixmodule.c @@ -13002,6 +13002,10 @@ os_posix_fallocate_impl(PyObject *module, int fd, Py_off_t offset, Py_BEGIN_ALLOW_THREADS result = posix_fallocate(fd, offset, length); Py_END_ALLOW_THREADS + // DragonFly BSD returns -1 and sets errno. + if (result == -1) { + result = errno; + } } while (result == EINTR && !(async_err = PyErr_CheckSignals())); if (result == 0) @@ -13049,6 +13053,10 @@ os_posix_fadvise_impl(PyObject *module, int fd, Py_off_t offset, Py_BEGIN_ALLOW_THREADS result = posix_fadvise(fd, offset, length, advice); Py_END_ALLOW_THREADS + // DragonFly BSD returns -1 and sets errno. + if (result == -1) { + result = errno; + } } while (result == EINTR && !(async_err = PyErr_CheckSignals())); if (result == 0) _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]
