bpf_prog_create_from_user — create an unattached filter from user buffer
| int bpf_prog_create_from_user ( | struct bpf_prog ** pfp, | 
| struct sock_fprog * fprog, | |
| bpf_aux_classic_check_t trans, | |
| bool save_orig ); | 
pfpthe unattached filter that is created
fprogthe filter program
transpost-classic verifier transformation handler
save_origsave classic BPF program
   This function effectively does the same as bpf_prog_create, only
   that it builds up its insns buffer from user space provided buffer.
   It also allows for passing a bpf_aux_classic_check_t handler.