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: acpid.rs
    path of file: ./repos/rustybox/util_linux
    
    the code of the file until where you have to start completion: use crate::libbb::appletlib::applet_name;
use crate::libbb::parse_config::parser_t;
use crate::librb::signal::__sighandler_t;
use crate::librb::size_t;
use crate::librb::smallint;
use libc;
use libc::close;
use libc::free;
use libc::open;
use libc::openlog;
use libc::pollfd;
use libc::stat;
use libc::strstr;
use libc::timeval;
use libc::unlink;
extern "C" {

  #[no_mangle]
  fn strlen(__s: *const libc::c_char) -> size_t;

  /* After v = xrealloc_vector(v, SHIFT, idx) it's ok to use
   * at least v[idx] and v[idx+1], for all idx values.
   * SHIFT specifies how many new elements are added (1:2, 2:4, ..., 8:256...)
   * when all elements are used up. New elements are zeroed out.
   * xrealloc_vector(v, SHIFT, idx) *MUST* be called with consecutive IDXs -
   * skipping an index is a bad bug - it may miss a realloc!
   */

  // NB: will return short read on error, not -1,
  // if some data was read before error occurred

  // Reads one line a-la fgets (but doesn't save terminating '\n').
  // Reads byte-by-byte. Useful when it is important to not read ahead.
  // Bytes are appended to pfx (which must be malloced, or NULL).

  /* Wrapper which restarts poll on EINTR or ENOMEM.
   * On other errors complains [perror("poll")] and returns.
   * Warning! May take (much) longer than timeout_ms to return!
   * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */

  /* Specialized: */
  /* Using xatoi() instead of naive atoi() is not always convenient -
   * in many places people want *non-negative* values, but store them
   * in signed int. Therefore we need this one:
   * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc.
   * It should really be named xatoi_nonnegative (since it allows 0),
   * but that would be too long.
   */

  /* Useful for reading port numbers */

  /* NOMMU friendy fork+exec: */

  /* { "-", NU
    
unsafe extern "C" fn parse_map_file(mut filename: *const libc::c_char) {
  let mut parser: *mut parser_t = std::ptr::null_mut();
  let mut tokens: [*mut libc::c_char; 6] = [0 as *mut libc::c_char; 6];
  parser =
    crate::libbb::parse_config::config_open2(filename, Some(crate::libbb::wfopen::fopen_for_read));
  if !parser.is_null() {
    while crate::libbb::parse_config::config_read(
      parser,
      tokens.as_mut_ptr(),
      (PARSE_NORMAL as libc::c_int | (6i32 & 0xffi32) << 8i32 | 6i32 & 0xffi32) as libc::c_uint,
      b"# \t\x00" as *const u8 as *const libc::c_char,
    ) != 0
    {
      (*ptr_to_globals).evt_tab = crate::libbb::xrealloc_vector::xrealloc_vector_helper(
        (*ptr_to_globals).evt_tab as *mut libc::c_void,
        ((::std::mem::size_of::<acpi_event>() as libc::c_ulong) << 8i32)
          .wrapping_add(1i32 as libc::c_ulong) as libc::c_uint,
        (*ptr_to_globals).n_evt,
      ) as *mut acpi_event;
      let ref mut fresh2 = (*(*ptr_to_globals)
        .evt_tab
        .offset((*ptr_to_globals).n_evt as isize))
      .s_type;
      *fresh2 = crate::libbb::xfuncs_printf::xstrdup(tokens[0]);
      (*(*ptr_to_globals)
        .evt_tab
        .offset((*ptr_to_globals).n_evt as isize))
      .n_type = crate::libbb::xatonum::xstrtou(tokens[1], 16i32) as u16;
      let ref mut fresh3 = (*(*ptr_to_globals)
        .evt_tab
        .offset((*ptr_to_globals).n_evt as isize))
      .s_code;
      *fresh3 = crate::libbb::xfuncs_printf::xstrdup(tokens[2]);
      (*(*ptr_to_globals)
        .evt_tab
        .offset((*ptr_to_globals).n_evt as isize))
      .n_code = crate::libbb::xatonum::xatou16(tokens[3]);
      (*(*ptr_to_globals)
        .evt_tab
        .offset((*ptr_to_globals).n_evt as isize))
      .value = crate::libbb::xatonum::xatoi_positive(tokens[4]) as u32;
      let ref mut fresh4 = (*(*ptr_to_globals)
        .evt_tab
        .offset((*ptr_to_globals).n_evt as isize))
      .desc;
      *fresh4 = crate::libbb::xfuncs_printf::xstrdup(tokens[5]);
      (*ptr_to_globals).n_evt += 1
    }
    crate::libbb::parse_config::config_close(parser);
  } else {
    (*ptr_to_globals).evt_tab = f_evt_tab.as_ptr() as *mut libc::c_void as *mut acpi_event;
    (*ptr_to_globals).n_evt = (::std::mem::size_of::<[acpi_event; 3]>() as libc::c_ulong)
      .wrapping_div(::std::mem::size_of::<acpi_event>() as libc::c_ulong)
      as libc::c_uint as libc::c_int
  };
}