explain_writev_or_die − write data from multiple buffers and report errors
#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);
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. |
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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.
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.
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);
write data from multiple buffers
explain writev(2) errors
terminate the calling process |
libexplain version 1.4
Copyright (C) 2009 Peter Miller