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fs: validate opendir() bufferSize before opening the directory - #67183
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yohannesjoya wants to merge 1 commit into
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fs.opendir() only checked options.bufferSize in the Dir constructor, which runs from the completion callback of the native opendir call. An invalid value was thrown from there, so it could not be caught and the process exited. fs.promises.opendir() is built on fs.opendir() and had the same problem. Check bufferSize before starting the native call, so fs.opendir() throws to the caller and fs.promises.opendir() rejects. Fixes: nodejs#67182 Signed-off-by: yohannesjoya <[email protected]>
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fs.opendir()only validatedoptions.bufferSizein theDirconstructor, which runs from the completion callback of the nativeopendircall. An invalid value was thrown from there, so notry/catchcould catch it, the callback was never called, and the process exited.fs.promises.opendir()ispromisify(opendir)and had the same problem.This checks
bufferSizebefore the native call, sofs.opendir()throws to the caller andfs.promises.opendir()rejects.fs.opendirSync()is unchanged, and the check in theDirconstructor stays for it. An explicitbufferSize: undefinedis still rejected, as before.Fixes: #67182
The new test fails on main and passes with this change.
tools/test.pyforparallel/test-fs-opendir*,parallel/test-fs-*dir*andparallel/test-fs-promises*(91 tests) andmake lint-jspass locally.AI disclosure: I used a coding agent to help find the bug and draft the test. I reproduced the crash on v20.20.2, v22.20.0 and main, reviewed the change line by line, and ran the tests above locally.