void explain_munmap_or_die(void *data, size_t data_size);
int explain_munmap_on_error(void *data, size_t data_size);
DESCRIPTION
The explain_munmap_or_die function is used to call the
munmap(2) system call. On failure an explanation will be printed to
stderr, obtained from the explain_munmap(3) function, and
then the process terminates by calling exit(EXIT_FAILURE).
The explain_munmap_on_error function is used to call the
munmap(2) system call. On failure an explanation will be printed to
stderr, obtained from the explain_munmap(3) function, but
still returns to the caller.
data
The data, exactly as to be passed to the munmap(2) system call.
data_size
The data_size, exactly as to be passed to the munmap(2) system
call.
RETURN VALUE
The explain_munmap_or_die function only returns on success, see
munmap(2) for more information. On failure, prints an explanation
and exits, it does not return.
The explain_munmap_on_error function always returns the value
return by the wrapped munmap(2) system call.
EXAMPLE
The explain_munmap_or_die function is intended to be used in a
fashion similar to the following example: