bionic (3) explain_writev_or_die.3.gz

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)