Feature fix libbpf examples

[hp77-creator]

Adding example to run a sample ebpf program which uses a map and updates a value in the map.

[yunwei37]

I think it might be better to rename the example to map-op?

And, can you try loading a eBPF program and running it in the kernel?

[hp77-creator]

sure @yunwei37

[yunwei37]

Hi @hp77-creator , is it ready to merge?

[hp77-creator]

Hi @yunwei37 , so I am able to compile the example but when I try to run it using LD_PRELOAD, I am getting following error:

LD_PRELOAD=~/.bpftime/libbpftime-syscall-ser
ver.dylib ./main
fish: Unknown command. './main' exists but is not an executable file.
LD_PRELOAD=~/.bpftime/libbpftime-syscall-server.dylib ./main

I will need to create a userspace program to run it, right?

[yunwei37]

maybe you need to try something like DYLD_INSERT_LIBRARIES or DYLD_LIBRARY_PATH?

I'm not quite sure about that

[yunwei37]

This draft has had no update since October 2025 and the last blocker was an unverified macOS execution path. If the example is still intended, please provide the current target OS/architecture, the exact build and launch commands, and the latest failure output against master; otherwise there is not enough current evidence to revive or patch this branch safely.