explain_linkat_or_die - link a file relative to directory and report errors

       libexplain version 1.4
       Copyright (C) 2013 Peter Miller

                                                                                        explain_linkat_or_die(3)

       The explain_linkat_or_die function is used to call the linkat(2) system call. On failure  an  explanation
       will  be printed to stderr, obtained from the explain_linkat(3) function, and then the process terminates
       by calling exit(EXIT_FAILURE).

       The explain_linkat_on_error function is used to call the linkat(2) system call. On failure an explanation
       will be printed to stderr, obtained from the explain_linkat(3) function, but still returns to the caller.

       old_dirfd
               The old_dirfd, exactly as to be passed to the linkat(2) system call.

       old_path
               The old_path, exactly as to be passed to the linkat(2) system call.

       new_fildes
               The new_fildes, exactly as to be passed to the linkat(2) system call.

       new_path
               The new_path, exactly as to be passed to the linkat(2) system call.

       flags   The flags, exactly as to be passed to the linkat(2) system call.

       The explain_linkat_or_die function is intended to be used in a fashion similar to the following example:
              explain_linkat_or_die(old_dirfd, old_path, new_fildes, new_path, flags);

       explain_linkat_or_die - link a file relative to directory and report errors

       The explain_linkat_or_die function only returns on  success,  see  linkat(2)  for  more  information.  On
       failure, prints an explanation and exits, it does not return.

       The  explain_linkat_on_error  function  always  returns  the value return by the wrapped linkat(2) system
       call.

linkat(2)
               create a file link relative to directory file descriptors

       explain_linkat(3)
               explain linkat(2) errors

       exit(2) terminate the calling process

       #include <libexplain/linkat.h>
       void explain_linkat_or_die(int old_dirfd, const char *old_path, int new_fildes, const char *new_path, int
       flags);
       int  explain_linkat_on_error(int  old_dirfd,  const char *old_path, int new_fildes, const char *new_path,
       int flags);