RFR: 8264744: (fs) Use file cloning in Linux version of Files::copy method [v9]

[Brian Burkhalter]

On Tue, 30 Aug 2022 16:36:00 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Brian Burkhalter has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 13 commits:
>> 
>>  - 8264744: Refactor UnixCopyFile::copyFile into UnixFileSystem; refactor OS-specific code to {Bsd,Linux}FileSystem
>>  - Merge
>>  - 8264744: Add mode to clone() and other requested changes
>>  - 8264744: Refactor {Bsd,Linux}CopyFile::clone into {Bsd,Linux}FileSystem::clone
>>  - Merge
>>  - 8264744: Remove CloneFile classes; refactor to use {Bsd,Linux}CopyFile
>>  - Merge
>>  - 8264744: Fix typo desintation -> destination
>>  - 8264744: Refactor into UnixCopyFile hierarchy
>>  - Merge
>>  - ... and 3 more: https://git.openjdk.org/jdk/compare/c74b6d45...ecce2093
>
> src/java.base/linux/native/libnio/fs/LinuxFileSystem.c line 96:
> 
>> 94:                     case EINVAL:
>> 95:                     case EXDEV:
>> 96:                         // ignore and try sendfile()
> 
> `ENOSYS` will need to be handled as done [here](https://github.com/openjdk/jdk/pull/10055/files#diff-4fdc393c9569db35d35d0b5698849aa939ba395ec5a685befadbb2bacbaddb3e).

Addressed in 2a98f0fe1acfbcf36151d9523ecf097c41100b78.

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PR: https://git.openjdk.org/jdk/pull/9486