Cleaning Up the DriverProgramming Wiki Page (3.2.0)

[pikpik]

Hi,

On May 20, 10:04 pm, in reply to "Trouble linker" pikpik wrote:

> I followed the guide as well, and I found that it is a bit outdated in
> some places.

[...]

> Basically, the examples need to be updated. I was about to, but I
> don't know what is preferred for some sections.

If anyone has advice, one specific example is where the page says:

"Starting, stopping and restarting device drivers must be done using
the service(8) command. To start the hello program, enter the
following command:

# service up /usr/sbin/hello
Hello, World!
RS: restarting /usr/sbin/hello, restarts 0

And what a surprise, it displays the Hello, World! message Stop the
driver with:

# service down hello"

(After that follows a lengthy explanation of RS and SEF as applicable
to driver programming.)

What I'm confused about is how the message from RS, "RS: restarting /
usr/sbin/hello, restarts 0," seems to have not been in MINIX's source
code since release 3.1.7. The current behavior, upon the "service up"
of Hello, is a DoS in the form of the console being flooded by "Hello,
World!" messages.

An option I thought of would be to change the example to use "service
run" instead, but this probably require the loss or writing of the
useful explanation of RS' interactions with the driver.

So:

(a) What should happen when RS restarts a driver and it causes a DoS?
This seems to be the same as the driver being stuck in an infinite
loop, but in a different situation.

(b) Would it make any sense to bring back RS' default run-once
behavior for drivers that don't have SEF integrated (if that's the
case)? (I don't think this would be a good idea, since the present
"run"-once or start-"up" repeatedly situation seems much better
delineated.)

Thank you,
pikpik

[pikpik]

Hi,

On May 20, 10:47 pm, pikpik wrote:

> [...] the message from RS, "RS: restarting /

> usr/sbin/hello, restarts 0," seems to have not been in MINIX's source
> code since release 3.1.7.

Here's a reference for this:

http://git.minix3.org/?p=minix.git&a=commitdiff&h=cb176df60f745969ac2442aa6ab489447512c8fb&hp=7685e98304ee9c1b28b0a8513ce8067b68d17395

Search the page for "RS: restarting." There are three matches.

Thank you,
pikpik