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[3.12] GH-111804: Drop posix.fallocate() under WASI (GH-111869) (GH-111919)

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GH-111804: Drop posix.fallocate() under WASI (GH-111869)

Drop posix.fallocate() under WASI.

The underlying POSIX function, posix_fallocate(), was found to vary too
much between implementations to remain in WASI. As such, while it was
available in WASI preview1, it's been dropped in preview2.
This commit is contained in:
Brett Cannon 2023-11-09 15:35:51 -08:00 • committed by GitHub
parent 09df271965
commit 5a8e6f8bcc
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3 changed files with 10 additions and 5 deletions
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2
Misc/NEWS.d/next/Library/2023-11-08-15-58-57.gh-issue-111804.uAXTOL.rst Normal file
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@ -0,0 +1,2 @@
Remove posix.fallocate() under WASI as the underlying posix_fallocate() is
not available in WASI preview2.

6
Modules/clinic/posixmodule.c.h generated
View file

@ -8159,7 +8159,7 @@ exit:
#endif /* (defined HAVE_TRUNCATE || defined MS_WINDOWS) */
#if (defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG))
#if (defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG) && !defined(__wasi__))
PyDoc_STRVAR(os_posix_fallocate__doc__,
"posix_fallocate($module, fd, offset, length, /)\n"
@ -8204,7 +8204,7 @@ exit:
return return_value;
}
#endif /* (defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG)) */
#endif /* (defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG) && !defined(__wasi__)) */
#if (defined(HAVE_POSIX_FADVISE) && !defined(POSIX_FADVISE_AIX_BUG))
@ -11999,4 +11999,4 @@ exit:
#ifndef OS_WAITSTATUS_TO_EXITCODE_METHODDEF
#define OS_WAITSTATUS_TO_EXITCODE_METHODDEF
#endif /* !defined(OS_WAITSTATUS_TO_EXITCODE_METHODDEF) */
/*[clinic end generated code: output=ce77253f8879f36e input=a9049054013a1b77]*/
/*[clinic end generated code: output=fa29739d72cfc07e input=a9049054013a1b77]*/

7
Modules/posixmodule.c
View file

@ -11891,7 +11891,10 @@ os_truncate_impl(PyObject *module, path_t *path, Py_off_t length)
#endif
#if defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG)
/* GH-111804: Due to posix_fallocate() not having consistent semantics across
OSs, support was dropped in WASI preview2. */
#if defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG) && \
!defined(__wasi__)
/*[clinic input]
os.posix_fallocate
@ -11929,7 +11932,7 @@ os_posix_fallocate_impl(PyObject *module, int fd, Py_off_t offset,
errno = result;
return posix_error();
}
#endif /* HAVE_POSIX_FALLOCATE) && !POSIX_FADVISE_AIX_BUG */
#endif /* HAVE_POSIX_FALLOCATE) && !POSIX_FADVISE_AIX_BUG && !defined(__wasi__) */
#if defined(HAVE_POSIX_FADVISE) && !defined(POSIX_FADVISE_AIX_BUG)