| // SPDX-License-Identifier: GPL-2.0 | |
| #include "vmlinux.h" | |
| #include <bpf/bpf_helpers.h> | |
| #include <bpf/bpf_tracing.h> | |
| char LICENSE[] SEC("license") = "GPL"; | |
| void *user_ptr; | |
| int retval; | |
| SEC("fentry.s") | |
| int BPF_PROG(fentry_xdp) | |
| { | |
| char buff[64]; | |
| retval = bpf_copy_from_user(buff, sizeof(buff), user_ptr); | |
| return 0; | |
| } |