RFR 8229888: Zip FS does not retain permissions when updating a Zip file

[Alan Bateman]

On 03/12/2019 23:45, Lance Andersen wrote:
> Did you mean:  Files.getPosixFilePermissions
Yes, there was a typo in my mail.

> :
>
> Would the following be more efficient than catching the IOE as I saw 
> it used in TempFileHelper:
>
> --------
> boolean isPosix = 
> FileSystems.getDefault().supportedFileAttributeViews().contains("posix");
> --------
Yes, that also avoids needing to be concerned with the FileStore.


> :
>
> If I am understanding this suggestion, it would be to modify the call 
> to Files.createTempFile in the method createTempFileinSameDirectoryAs 
> to pass the  original zip file permissions as an file attribute ?
Yes, although you will be restricted by the umask so you could end up 
with less permissions that the original zip file. Anyway, I just wanted 
to mention it as alternative ways that you could explore to avoid 
interacting with the underlying FileStore as I suspect that will be 
problematic in some environments.

-Alan
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.java.net/pipermail/nio-dev/attachments/20191204/6e8c2785/attachment.html>