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Ran 21 Apr 2016 01:34PM UTC

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Committed 21 Apr 2016 01:30PM UTC coverage: 100.0%. Remained the same

Job # 31.7

Build Type

Pull #1

travis-ci

Committed by

jviotti

Commit Message

Implement an option to align final incomplete data chunk

Writing unaligned data causes `EINVAL` (from `write(2)`):

> EINVAL
>  fd is attached to an object which is unsuitable for writing; or the
>  file was opened with the O_DIRECT flag, and either the address
>  specified in buf, the value specified in count, or the current file
>  offset is not suitably aligned.

This pull request implements an opt-in option (to preserve backwards
compatibility) called `align`, that when used in conjunction to `flush`,
will cause the incomplete data chunk to be padded with null bytes to
match the passed chunk size.

For example, in the added test, the chunk size is 4 bytes, and we push
three chunks:

- `12`: 2 bytes
- `34`: 2 bytes
- `5`: 1 byte

The final incomplete data chunk will become `5\0\0\0` (to match the
specified 4 bytes) if the `align` option was enabled.

Signed-off-by: Juan Cruz Viotti <jviottidc@gmail.com>

Pull Request Pull Request #1: Implement an option to align final incomplete data chunk

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