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test_posix_fallocate() fails under test_posix under WASI #111804

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brettcannon opened this issue Nov 7, 2023 · 3 comments
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test_posix_fallocate() fails under test_posix under WASI #111804

brettcannon opened this issue Nov 7, 2023 · 3 comments
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3.11 only security fixes 3.12 only security fixes 3.13 bugs and security fixes OS-wasi stdlib Python modules in the Lib dir

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brettcannon commented Nov 7, 2023 •
edited by bedevere-app bot
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======================================================================
ERROR: test_posix_fallocate (__main__.PosixTester.test_posix_fallocate)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Lib/test/test_posix.py", line 405, in test_posix_fallocate
    posix.posix_fallocate(fd, 0, 10)
OSError: [Errno 58] Not supported

----------------------------------------------------------------------

Detected with WASI-SDK 20 and wasmtime 14.

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@brettcannon
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I have asked at https://bytecodealliance.zulipchat.com/#narrow/stream/219900-wasi/topic/Who.20is.20expected.20to.20make.20.60posix_fallocate.60.20work.3F to find out who I should reach out to for finding out what this function errors out.

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Turns out posix_fallocate() was in WASI preview1, but has been yanked in preview2 due to inconsistent semantics across OSs. Best solution then is to just skip posix_fallocate() on WASI unconditionally.

@bedevere-app bedevere-app bot mentioned this issue Nov 9, 2023
Merged
@brettcannon brettcannon added stdlib Python modules in the Lib dir 3.11 only security fixes 3.12 only security fixes 3.13 bugs and security fixes labels Nov 9, 2023
brettcannon added a commit that referenced this issue Nov 9, 2023
@brettcannon
GH-111804: Drop posix.fallocate() under WASI (GH-111869)
97c4c06 
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.
@brettcannon
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Fixed in main, but the backports to 3.11 and 3.12 still need to be done.

@brettcannon brettcannon self-assigned this Nov 9, 2023
brettcannon added a commit to brettcannon/cpython that referenced this issue Nov 9, 2023
@brettcannon
pythonGH-111804: Drop posix.fallocate() under WASI (pythonGH-111869)
85b773c 
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.

(cherry picked from commit 97c4c06)
brettcannon added a commit to brettcannon/cpython that referenced this issue Nov 9, 2023
@brettcannon
pythonGH-111804: Drop posix.fallocate() under WASI (pythonGH-111869)
6c784ed 
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.

(cherry picked from commit 97c4c06)
brettcannon added a commit to brettcannon/cpython that referenced this issue Nov 9, 2023
@brettcannon
pythonGH-111804: Drop posix.fallocate() under WASI (pythonGH-111869)
a400ade 
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 was referenced Nov 9, 2023
Merged
Merged
brettcannon added a commit that referenced this issue Nov 9, 2023
@brettcannon
[3.12] GH-111804: Drop posix.fallocate() under WASI (GH-111869) (GH-1…
5a8e6f8 
…11919)

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.
brettcannon added a commit that referenced this issue Nov 9, 2023
@brettcannon
[3.11] GH-111804: Drop posix.fallocate() under WASI (GH-111869) (GH-1…
226f4bc 
…11920)

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.
@github-project-automation github-project-automation bot moved this from Todo to Done in WASI to tier 2 Nov 9, 2023
aisk pushed a commit to aisk/cpython that referenced this issue Feb 11, 2024
@brettcannon @aisk
pythonGH-111804: Drop posix.fallocate() under WASI (pythonGH-111869)
95aa4ad 
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.
Glyphack pushed a commit to Glyphack/cpython that referenced this issue Sep 2, 2024
@brettcannon @Glyphack
pythonGH-111804: Drop posix.fallocate() under WASI (pythonGH-111869)
72a2711 
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.
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