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 1.4
       Copyright (C) 2010 Peter Miller

                                                                         explain_munmap_or_die(3)