NAME

       explain_realpath_or_die - return canonical pathname and report errors

SYNOPSIS

       #include <libexplain/realpath.h>
       char *explain_realpath_or_die(const char *pathname, char *resolved_pathname);
       char *explain_realpath_on_error(const char *pathname, char *resolved_pathname);

DESCRIPTION

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

       The  explain_realpath_on_error  function  is  used to call the realpath(3) system call. On
       failure an explanation will be printed to stderr, obtained  from  the  explain_realpath(3)
       function, but still returns to the caller.

       pathname
               The pathname, exactly as to be passed to the realpath(3) system call.

       resolved_pathname
               The resolved_pathname, exactly as to be passed to the realpath(3) system call.

RETURN VALUE

       The  explain_realpath_or_die  function  only  returns on success, see realpath(3) for more
       information. On failure, prints an explanation and exits, it does not return.

       The explain_realpath_on_error function always returns the  value  return  by  the  wrapped
       realpath(3) system call.

EXAMPLE

       The  explain_realpath_or_die  function  is intended to be used in a fashion similar to the
       following example:
              char *result = explain_realpath_or_die(pathname, resolved_pathname);

SEE ALSO

       realpath(3)
               return the canonicalized absolute pathname

       explain_realpath(3)
               explain realpath(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2011 Peter Miller

                                                                       explain_realpath_or_die(3)