Libbpf userspace function bpf_program__attach_freplace

0.2.0

Attach a BPF_PROG_TYPE_EXT program to a global eBPF function, thereby replacing it.

Definition

struct bpf_link * bpf_program__attach_freplace(const struct bpf_program *prog, int target_fd, const char *attach_func_name);

Parameters

• prog: BPF program to attach
• target_fd: file descriptor of the eBPF program containing the global function to replace
• attach_func_name: name of the global function to replace

Return

Reference to the newly created BPF link; or NULL is returned on error, error code is stored in errno

Usage

Docs could be improved

This part of the docs is incomplete, contributions are very welcome

Example

Docs could be improved

This part of the docs is incomplete, contributions are very welcome