Add constants from linux/cn_proc.h and linux/connector.h

[Bben01]

Description

Add constants from linux/cn_proc.h and linux/connector.h

Sources

https://github.com/torvalds/linux/blob/b6ea1680d0ac0e45157a819c41b46565f4616186/include/uapi/linux/cn_proc.h
https://github.com/torvalds/linux/blob/b6ea1680d0ac0e45157a819c41b46565f4616186/include/uapi/linux/connector.h

Checklist

• Relevant tests in libc-test/semver have been updated
• No placeholder or unstable values like *LAST or *MAX are
  included (see rust-lang/libc#3131)
• Tested locally (cd libc-test && cargo test --target mytarget);
  especially relevant for platforms that may not be checked in CI

@rustbot label +stable-nominated

[Bben01]

I think that the CI is failing on i686-unknown-linux-gnu because it didn't find the header files. What should I do to fix that?

[tgross35]

If these are more recent than our kernel versions in CI, you will need to update libc-test/build.rs to skip them with a FIXME. If you do this, just make sure libc-test passes locally without the skips (assuming you have a newer version locally).

@rustbot author

[rustbot]

Reminder, once the PR becomes ready for a review, use @rustbot ready.

[Bben01]

I don't know why the style check fails. It says to replace the = with : in the c_enum, but the macro cannot accept :

help: replace equals symbol with a colon
     |
4760 -         PROC_EVENT_EXIT = 0x80000000,
4760 +         PROC_EVENT_EXIT: 0x80000000,

@rustbot ready