explain_writev_or_die3
Write data from multiple buffers and report errors
Usage
#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);
Overview
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.
Examples
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);Releases
6 releases since Debian 7 (Wheezy); the text changed 1 time.