Make sure all license headers are BSD license (or compatible)

[mergennachin]

• Make sure all license headers are BSD license.
• Make sure lint rules are in place for future such cases.

[mergennachin]

Here are some examples: https://github.com/pytorch/executorch/blob/main/backends/cadence/aot/pass_utils.py#L1

[mergennachin]

Hi @mcremon-meta

Majority of these licenses are in cadence folder. https://gist.github.com/mergennachin/83bef4ab9bb5d721284ddb50168289d4

executorch repo is BSD license altogether, unless it is a third-party library.

A standard license header for individual files are something like this:

# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree.

Can we codemod these files?

[mcremon-meta]

Hi @mcremon-meta

Majority of these licenses are in cadence folder. https://gist.github.com/mergennachin/83bef4ab9bb5d721284ddb50168289d4

executorch repo is BSD license altogether, unless it is a third-party library.

A standard license header for individual files are something like this:

# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree.

Can we codemod these files?

@mergennachin yup we can change that. @zonglinpeng can you take a look? If it's urgent and you don't have time, let me know and we'll find someone to do it quickly.

[mergennachin]

@mcremon-meta

It's currently coming from our partners. In particular, during the IP review, their attorneys are raising this as potential legal risks when contributing to our repo. So, I'd say somewhat urgent.

In parallel, I will create OSS lintrunner rule to make sure it doesn't happen in the future.

[zonglinpeng]

@mergennachin Thanks for catching this - Will fix them now and target to ship by EOD if that works? Updating BSD license header was long on my TODO but good to know it's urgent :)
cc. @mcremon-meta
p.s. @mcremon-meta will be out in next 2 month. Please @ me directly for cadence subfolder issues

[mcremon-meta]

#8420 should fix our side, let me know if I missed any!

[mergennachin]

@digantdesai

remaining here: #8428