compat_linux failures due to execve, openat, etc.

[Kevin Bloom <ktnb%posteo.net@localhost>]

Hi all,

I've been wanting to try out NetBSD compat_linux(8) for a long time
and I've finally had a situation that seems like a good candidate for
testing it out. I've done the setup as explained in the man page,
however, it appears that there is some issue with finding some key
functions, specifically: execve, access, open, stat64, statfs,
and connect. When I view the ktrace(1) dump
I see lines like:

13390  13390 nix-env  CALL execve(0x7f7fffffdec0, 0x7f7fff223a90, 0x7f7fff223ab0)
13390  13390 nix-env  NAMI "/nix/store/${hash1}-nix-2.32.2/bin/nix-env"
13390  13390 nix-env  NAMI "/emul/linux"
13390  13390 nix-env  NAMI "/emul/linux/nix/store/${hash2}-glibc-2.40-66/lib/ld-linux-x86-64.so.2"a
13390  13390 nix-env  NAMI "/nix/store/${hash2}-glibc-2.40-66/lib/ld-linux-x86-64.so.2"
13390  13390 nix-env  EMUL "linux"
13390  13390 nix-env  RET execve -1 errno -2 No such file or directory

When I look in the glibc directory I do see that shared lib in there
so I'm confused why it's saying it's missing.

I honestly don't no much about how the compat layer works other than
what is in the wiki and man page. Any ideas to debug this more?

PS: I know that nix doesn't work on NetBSD but I have a situation
where being able to ues nix on NetBSD for _linux_ programs would be
handy.

PSS: I'm on NetBSD 11.99.3 amd64

Thanks,

kev