explain_writev_or_die

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.

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

COPYRIGHT

libexplain version 1.4
Copyright (C) 2009 Peter Miller