Partially consuming fs.ReadStream closes file handle despite `autoClose: false`

Version

v19.2.0, v14.21.1

Platform

Linux wolf-x1c6 5.15.0-53-generic #59-Ubuntu SMP Mon Oct 17 18:53:30 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Subsystem

No response

What steps will reproduce the bug?

import fsPromises from 'node:fs/promises'

const fh = await fsPromises.open('example.txt')
fh.on('close', () => {throw new Error('handle closed!')})

const stream = fh.createReadStream({
	autoClose: false,
})

for await (const chunk of stream) {
	break
}

// Give the event loop a breather: this seems to be where the close happens
await new Promise(resolve => setTimeout(resolve, 10))

console.log('fd', fh.fd) // = -1; stream closed

How often does it reproduce? Is there a required condition?

Always

What is the expected behavior?

FileHandle.createReadStream({autoClose: false}) should result in the file handle not being automatically closed when the stream is destroyed.

What do you see instead?

Using fs.ReadStream[Symbol.asyncIterator] seems to unconditionally close the file handle (after a small delay; I guess at the end of the event loop or something? but haven't dug in; just noted the setTimeout above is necessary to reproduce) despite {autoClose: false} being passed to FileHandle.createReadStream().

This seems to be the result of the underlying readable.destroy() also closing the file handle; but it means that, as far as I can tell, there's no way to only partially consume an fs.ReadStream created from a file handle without either closing the handle or leaking the stream.

Additional information

No response

Commencez par la reproduction fournie et suivez FileHandle.createReadStream(), fs.ReadStream[Symbol.asyncIterator] et readable.destroy() pendant une itération asynchrone partielle. Confirmez quand le handle de fichier se ferme malgré autoClose: false, puis assurez-vous que le handle reste ouvert après la sortie de l’itération sans laisser fuir le stream.