On Wed, 2020-09-30 at 11:07 +0206, John Ogness wrote: > If a reader provides a buffer that is smaller than the message text, > the @text_len field of @info will have a value larger than the buffer > size. If readers blindly read @text_len bytes of data without > checking the size, they will read beyond their buffer. > > Add this check to record_print_text() to properly recognize when such > truncation has occurred. > > Add a maximum size argument to the ringbuffer function to extend > records so that records can not be created that are larger than the > buffer size of readers. > > When extending records (LOG_CONT), do not extend records beyond > LOG_LINE_MAX since that is the maximum size available in the buffers > used by consoles and syslog.
I still think it better to support backspace by rewinding the buffer rather than truncation of the output.
