Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
explain_writev_or_die(3)   Library Functions Manual   explain_writev_or_die(3)

NAME
       explain_writev_or_die - write data from multiple	buffers	and report er-
       rors

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) sys-
       tem 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 1.3
       Copyright (C) 2009 Peter	Miller

						      explain_writev_or_die(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=explain_writev_or_die&sektion=3&manpath=FreeBSD+12.2-RELEASE+and+Ports>

home | help