Re: [PATCH bpf-next v2 1/7] bpf: Implement bpf_probe_read_kernel_dynptr helper

On Sat, Jan 25, 2025 at 12:30 AM Levi Zim via B4 Relay devnull+rsworktech.outlook.com@kernel.org wrote:

From: Levi Zim rsworktech@outlook.com

This patch add a helper function bpf_probe_read_kernel_dynptr:

long bpf_probe_read_kernel_dynptr(const struct bpf_dynptr *dst, u32 offset, u32 size, const void *unsafe_ptr, u64 flags);

We stopped adding helpers years ago. Only new kfuncs are allowed.

This particular one doesn't look useful as-is. The same logic can be expressed with - create dynptr - dynptr_slice - copy_from_kernel

pw-bot: cr