lkml.org 
[lkml]   [2000]   [Dec]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: /dev/random probs in 2.4test(12-pre3)

> > I know. Still leaves lot's of people that assume that reading /dev/random
> > will return data, or will block.
> >
> > I've seen lots of programs that will assume that if we request x bytes
> > from /dev/random it will return x bytes.
>
> I find this really humorous honestly. I see a lot of people assuming that if
> you write N bytes or read N bytes that you will have done N bytes. There are
> return values for these functions that tell you clearly how many bytes were
> done.

Of course. Lesson one : check return values

> Any programmer who has evolved sufficiently from a scriptie should take
> necessary precautions to check how much data was transferred. Those who
> don't..well, there is still tomorrow.
>
> There is no reason to add any additional documentation. If we did, we'd be
> starting the trend of documenting the direction a mouse moves when it's
> pushed and not to be alarmed if you turn the mouse sideways and the result is
> 90 degrees off.

random devices are different. If it request 10 bytes on random stuff, I
want 10 bytes. Anything less is a waste of the read, because I need 10
bytes.

At least, in my opinion.

Anyone has an insight how other *NIX'es handle this ?

> -d


Igmar

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:51    [W:0.047 / U:8.152 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site