NAME

       explain_writev_or_die - write data from multiple buffers and report errors

SYNOPSIS

       #include <libexplain/writev.h>
       ssize_t explain_writev_or_die(int fildes, const struct iovec *data, int data_size);
       ssize_t explain_writev_on_error(int fildes, const struct iovec *data, int data_size);

DESCRIPTION

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

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

       fildes  The fildes, exactly as to be passed to the writev(2) system call.

       data    The data, exactly as to be passed to the writev(2) system call.

       data_size
               The data_size, exactly as to be passed to the writev(2) system call.

RETURN VALUE

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

       The explain_writev_on_error function always  returns  the  value  return  by  the  wrapped
       writev(2) system call.

EXAMPLE

       The  explain_writev_or_die  function  is  intended  to be used in a fashion similar to the
       following example:
              ssize_t result = explain_writev_or_die(fildes, data, data_size);

SEE ALSO

       writev(2)
               write data from multiple buffers

       explain_writev(3)
               explain writev(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2009 Peter Miller

                                                                         explain_writev_or_die(3)