[jdk17u] RFR: 8338696: (fs) BasicFileAttributes.creationTime() falls back to epoch if birth time is unavailable (Linux)

[Severin Gehwolf]

On Mon, 2 Sep 2024 15:36:52 GMT, Severin Gehwolf <sgehwolf at openjdk.org> wrote:

> Clean backport to improve compatibility with JDK 17 versions which didn't support birth time (`17.0.10` and earlier). I.e. on those systems now last-modified-time is being returned when the statx syscall didn't fill in the birth time (is not supported for this filesystem). In `17.0.11` the epoch (or `0`) is returned for filesystems not supporting creation time. Proposing as a critical fix so as to get it into 17.0.13.
> 
> CSR for 21-pool and 17-pool is the same as for JDK head.

Thanks!

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PR Comment: https://git.openjdk.org/jdk17u/pull/395#issuecomment-2337566439