static apr_status_t writev_it_all()

in modules/fcgid/fcgid_proc_unix.c [715:755]

• 32 lines of code
• 8 McCabe index (conditional complexity)

static apr_status_t writev_it_all(fcgid_ipc *ipc_handle,
                                  struct iovec *vec, int nvec)
{
    apr_size_t bytes_written = 0;
    apr_status_t rv;
    apr_size_t len = 0;
    int i = 0;
    int writecnt = 0;

    /* Calculate the total size */
    for (i = 0; i < nvec; i++) {
        len += vec[i].iov_len;
    }

    i = 0;
    while (bytes_written != len) {
        rv = socket_writev(ipc_handle, vec + i, nvec - i, &writecnt);
        if (rv != APR_SUCCESS)
            return rv;
        bytes_written += writecnt;

        if (bytes_written < len) {
            /* Skip over the vectors that have already been written */
            apr_size_t cnt = vec[i].iov_len;

            while (writecnt >= cnt && i + 1 < nvec) {
                i++;
                cnt += vec[i].iov_len;
            }

            if (writecnt < cnt) {
                /* Handle partial write of vec i */
                vec[i].iov_base = (char *) vec[i].iov_base +
                    (vec[i].iov_len - (cnt - writecnt));
                vec[i].iov_len = cnt - writecnt;
            }
        }
    }

    return APR_SUCCESS;
}