This is a discussion on Re: strange behaviour with /sbin/init and serial console - FreeBSD ; Hello Theirry, * Thierry Herbelot wrote: > with the following patch on /sbin/init, I have two different behaviours > depending on the console type (on a i386/32 PC) : > - on a video console, I see the expected two ...
* Thierry Herbelot
> with the following patch on /sbin/init, I have two different behaviours
> depending on the console type (on a i386/32 PC) :
> - on a video console, I see the expected two messages,
> - on a serial console, the messages are not displayed (init silently finishes
> its job and gets to start /etc/rc and everything)
> I assume that the writev system call is implemented in
> src/sys/kern/tty_cons.c::cnwrite(), but I could not parse the code to find an
> any taker ?
> PS : this is initially for a RELENG_6 machine, but the code is quite similar
> under RELENG_7 or Current
Any data written to /dev/console is not multiplexed to all console
devices, but only the first active device in the list. The reason behind
this, is because it adds a real lot of complexity to the console code,
especially related to polling and reading on /dev/console.
This weekend I'm going to commit a replacement implementation of
/dev/console, which also has this restriction.
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