debian man page for explain_munmap_or_die

explain_munmap_or_die(3)				     Library Functions Manual					  explain_munmap_or_die(3)

NAME
       explain_munmap_or_die - unmap a file or device from memory and report errors

SYNOPSIS
       #include <libexplain/munmap.h>
       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:
	      explain_munmap_or_die(data, data_size);

SEE ALSO
       munmap(2)
	       unmap a file or device from memory

       explain_munmap(3)
	       explain munmap(2) errors

       exit(2) terminate the calling process

COPYRIGHT
       libexplain version 0.52
       Copyright (C) 2010 Peter Miller

															  explain_munmap_or_die(3)