explain_read_or_die(3) [debian man page]

explain_read_or_die(3)					     Library Functions Manual					    explain_read_or_die(3)

NAME

       explain_read_or_die - read from a file descriptor and report errors

SYNOPSIS

       #include <libexplain/read.h>
       long explain_read_or_die(int fildes, const void *data, long data_size);

DESCRIPTION

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

       This function is intended to be used in a fashion similar to the following example:
	      explain_read_or_die(fildes, data, data_size);

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

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

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

       Returns:
	       This function only returns on success.  On failure, prints an explanation and exits.

SEE ALSO

       read(2) read from a file descriptor

       explain_read(3)
	       explain read(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2008 Peter Miller

															    explain_read_or_die(3)

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 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 0.52
       Copyright (C) 2009 Peter Miller

															  explain_writev_or_die(3)