Function getgrnam_r 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn getgrnam_r(
    name: *const c_char,
    result_buf: *mut group,
    buffer: *mut c_char,
    buflen: size_t,
    result: *mut *mut group,
) -> c_int

MT-Safe locale

See https://pubs.opengroup.org/onlinepubs/9799919799/functions/getgrnam_r.html.

Updates the group structure pointed to by result_buf and store a pointer to that structure at the location pointed to by result.