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fs: fix mode validation #37432

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fs: fix mode validation #37432

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RaisinTen
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Fixes: #37430

@nodejs-github-bot nodejs-github-bot added the fs Issues and PRs related to the fs subsystem / file system. label Feb 18, 2021
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CI: https://ci.nodejs.org/job/node-test-pull-request/36216/

@Linkgoron
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Linkgoron commented Feb 18, 2021 •
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I think that this won't work, because parseFileMode lets any uint32 number to pass it.

The error in the issue also happens in other places. For example, this also crashes:

const wat = path.join(tmpdir.path, 'wat.txt');
fs.writeFile(wat,'a123', {
  mode: 2176057344,
},(err)=>{
  console.log(err);
})

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CI: https://ci.nodejs.org/job/node-test-pull-request/36224/

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CI: https://ci.nodejs.org/job/node-test-pull-request/36225/

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CI: https://ci.nodejs.org/job/node-test-pull-request/36249/

@RaisinTen RaisinTen mentioned this pull request Feb 23, 2021
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@RaisinTen RaisinTen changed the title fs: validate mode in ReadStream and WriteStream fs: fix mode validation Feb 23, 2021
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jasnell commented Feb 23, 2021

I'm sorry, I didn't see this PR before I opened the alternative #37480. I believe the fix in #37480 is the correct one that covers the broader case.

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Superseded by: #37480

@RaisinTen RaisinTen closed this Feb 24, 2021
@RaisinTen RaisinTen deleted the fs/validate-mode-in-WriteStream branch February 24, 2021 14:00
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@Lxxyx Lxxyx Lxxyx approved these changes

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Successfully merging this pull request may close these issues.

Crash when mode is to big in fs.createWriteStream
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@RaisinTen @nodejs-github-bot @Linkgoron @jasnell @Lxxyx