On Fri, 2 Feb 2024 21:20:29 GMT, Eirik Bjørsnøs <eir...@openjdk.org> wrote:

>> Please review this PR to fix to a regression in ZipFileSystem, introduced by 
>> JDK-8322565 in PR #17170.
>> 
>> When `Files.setPosixFilePermissions` is called on an existing MSDOS entry, 
>> then `Entry.posixPerms` field will be -1 (all 1s in binary). The logic 
>> introduced by JDK-8322565 did not account for this and incorrectly sets the 
>> leading seven bits to all ones instead of all zeros.
>> 
>> The fix is to introduce a branch for `Entry.posixPerms` being -1 and deal 
>> with that case separately.
>> 
>> The PR adds a test case to `TestPosix` which reproduces the regression. 
>> While visiting this test, I also fixed an incorrect spelling of 
>> `setPosixFilePermissions` (also introduced by #17170).
>
> Eirik Bjørsnøs has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   For clarity, add comments with the before/after zipdetails output of the 
> relevant CEN fields

Marked as reviewed by lancea (Reviewer).

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

PR Review: https://git.openjdk.org/jdk/pull/17556#pullrequestreview-1860426767

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