bpf2go: type *btf.Pointer: not supported about ebpf

[lmb]

struct openat_args {
    int flags;
    const char *fname_ptr;
    char fname[NAME_MAX];
};

The problem here is fname_ptr as you've probably figured out. Pointers are not supported because we can't put C pointer values into Go pointer types. Taking a pointer from kernel space and doing something with it in user space in general is complicated. The way to work around this is by changing the type declaration:

struct openat_args {
    int flags;
    uintptr_t fname_ptr;
    char fname[NAME_MAX];
};

Instead of a pointer you store the raw value of the pointer. In userspace you can retrieve that value and do with it what you want (maybe via ptrace?), but you can't stuff it into a Go pointer.