You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: netstat.rs
    path of file: ./repos/rustybox/networking
    
    the code of the file until where you have to start completion: use crate::libbb::ptr_to_globals::bb_errno;
use crate::librb::in6_addr;
use crate::librb::size_t;
use crate::librb::smallint;
use crate::librb::socklen_t;
use c2rust_asm_casts;
use c2rust_asm_casts::AsmCastTrait;
use libc;
use libc::fclose;
use libc::free;
use libc::printf;
use libc::sa_family_t
    
unsafe extern "C" fn extract_socket_inode(mut lname: *const libc::c_char) -> libc::c_long {
  let mut inode: libc::c_long = -1i32 as libc::c_long;
  if !crate::libbb::compare_string_array::is_prefixed_with(
    lname,
    b"socket:[\x00" as *const u8 as *const libc::c_char,
  )
  .is_null()
  {
    /* "socket:[12345]", extract the "12345" as inode */
    inode = bb_strtoul(
      lname
        .offset(::std::mem::size_of::<[libc::c_char; 9]>() as libc::c_ulong as isize)
        .offset(-1),
      &mut lname as *mut *const libc::c_char as *mut *mut libc::c_char,
      0,
    ) as libc::c_long;
    if *lname as libc::c_int != ']' as i32 {
      inode = -1i32 as libc::c_long
    }
  } else if !crate::libbb::compare_string_array::is_prefixed_with(
    lname,
    b"[0000]:\x00" as *const u8 as *const libc::c_char,
  )
  .is_null()
  {
    /* "[0000]:12345", extract the "12345" as inode */
    inode = bb_strtoul(
      lname
        .offset(::std::mem::size_of::<[libc::c_char; 8]>() as libc::c_ulong as isize)
        .offset(-1),
      0 as *mut *mut libc::c_char,
      0,
    ) as libc::c_long;
    if *bb_errno != 0 {
      /* not NUL terminated? */
      inode = -1i32 as libc::c_long
    }
  }
  /* bb_strtol returns all-ones bit pattern on ERANGE anyway */
  return inode; /* continue looking one level below /proc */
}