Move common Linux ptrace definitions to linux_like/mod.rs

[mbyzhang]

Move common Linux ptrace definitions to linux_like/mod.rs.

Continuing from #3463

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[mbyzhang]

Hi, any pointers on CI failures?

"full CI / Build Channels Linux (beta) " failed due to types like ::__u64 not present on wasm32-unknown-emscripten target. Any clean way I can add them?

"full CI / Docker Linux Tier2 (i686-unknown-linux-musl) (pull_request)" failed seemingly due to ptrace_syscall_info not present on musl. Why, since I already added it to common Linux definitions?

Thanks

[bors]

☔ The latest upstream changes (presumably #3962) made this pull request unmergeable. Please resolve the merge conflicts.

[tgross35]

Hi, any pointers on CI failures?

"full CI / Build Channels Linux (beta) " failed due to types like ::__u64 not present on wasm32-unknown-emscripten target. Any clean way I can add them?

Does emscripten even have ptrace (@hoodmane)? I think you might have to disable it on at least a few platforms.

"full CI / Docker Linux Tier2 (i686-unknown-linux-musl) (pull_request)" failed seemingly due to ptrace_syscall_info not present on musl. Why, since I already added it to common Linux definitions?

The struct comes uapi and not from the system libc, right? We have some old headers in CI, you might just need to disable it in build.rs.

@rustbot author

[hoodmane]

Yeah Emscripten has no ptrace, nor any processes.