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drop runc-dmz solution according to overlay solution #4482

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merged 1 commit into from
Oct 29, 2024

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lifubang
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Because we have the overlay solution, we can drop runc-dmz binary solution since it has too many limitations.

The original post is here: #4450 (comment)

Because of there are many commits about runc-dmz binary solution, so doing git revert action is very hard, let's drop these code line by line.

@AkihiroSuda AkihiroSuda added this to the 1.3.0 milestone Oct 28, 2024
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One minor nit.

Comment on lines +3 to +5
`runc` normally has to make a binary copy of itself when constructing a
container process in order to defend against certain container runtime attacks
such as CVE-2019-5736.
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Ah, I forgot to document how the new overlay mode works in #4448. I'll open a separate PR for that.

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this is more of a discussion, so with the overlay change i guess memfd-bind is no longer needed? 🤔

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This is being discussed in #4450 (comment). Short answer: it has fewer upsides now and there is a fairly strong case for removing it.

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@lifubang lifubang force-pushed the drop-dmz-binary branch 4 times, most recently from fad48fe to 330755c Compare October 28, 2024 13:39

The following build tags were used earlier, but are now obsoleted:
- **runc_nodmz** (since runc v1.2.1 runc dmz binary is dropped)
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(Considering the amount of the changes I was wondering if this is going to be v1.3.0, but probably safe to cherrypick to v1.2.1, as dmz was experimental and opt-in)

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Probably https://github.com/opencontainers/runc/blob/main/docs/experimental.md should be updated to reflect the history

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I think it makes sense to drop runc-dmz now since no one is using runc_dmz (yet). Adding a backport label.

Because we have the overlay solution, we can drop runc-dmz binary
solution since it has too many limitations.

Signed-off-by: lifubang <[email protected]>
@AkihiroSuda AkihiroSuda modified the milestones: 1.3.0, 1.2.1 Oct 28, 2024
@kolyshkin kolyshkin added the backport/1.2-todo A PR in main branch which needs to be backported to release-1.2 label Oct 28, 2024
@cyphar cyphar merged commit 68bef80 into opencontainers:main Oct 29, 2024
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@lifubang lifubang added backport/1.2-done A PR in main branch which has been backported to release-1.2 and removed backport/1.2-todo A PR in main branch which needs to be backported to release-1.2 labels Oct 29, 2024
@lifubang lifubang deleted the drop-dmz-binary branch October 29, 2024 09:54
@kolyshkin kolyshkin removed this from the 1.2.1 milestone Nov 1, 2024
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5 participants