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explain_pwrite_or_die(3)   Library Functions Manual   explain_pwrite_or_die(3)

NAME
       explain_pwrite_or_die  -	seek and write to a file descriptor and	report
       errors

SYNOPSIS
       #include	<libexplain/pwrite.h>
       ssize_t explain_pwrite_or_die(int  fildes,  const  void	*data,	size_t
       data_size, off_t	offset);
       ssize_t	explain_pwrite_on_error(int  fildes,  const void *data,	size_t
       data_size, off_t	offset))

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

       The explain_pwrite_on_error function is used to call the	pwrite(2) sys-
       tem call. On failure an explanation will	be printed to stderr, obtained
       from the	explain_pwrite(3) function, but	still returns to the caller.

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

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

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

       offset  The  offset,  exactly  as  to be	passed to the pwrite(2)	system
	       call.

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

       The explain_pwrite_on_error function always returns the value return by
       the wrapped pwrite(2) system call.

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

SEE ALSO
       pwrite(2)
	       read from or write to a file descriptor at a given offset

       explain_pwrite(3)
	       explain pwrite(2) errors

       exit(2) terminate the calling process

COPYRIGHT
       libexplain version 1.3
       Copyright (C) 2009 Peter	Miller

						      explain_pwrite_or_die(3)

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

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