RFR: 5041655: (ch) FileLock: negative param and overflow issues [v2]

[Alan Bateman]

On Tue, 8 Feb 2022 18:20:51 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

> Note that the extant Unix version for size zero creates a lock where `size()` returns zero while in reality locking the whole file.

Right, so you end up with a FileLock that says it doesn't overlap with any other lock but it actually locks the region to the end of file. I think the inconsistencies will go if you promote 0 to MAX_VALUE-pos before create the FileLock object.

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PR: https://git.openjdk.java.net/jdk/pull/7254