Re: Patch: cprng_fast performance - please review.

2014-04-18 Thread Roland C. Dowdeswell
On Fri, Apr 18, 2014 at 08:23:11PM +0200, Markku-Juhani Olavi Saarinen wrote: Agreed. AES is worse if you don't have AES-NI. It has been there on all new systems purchased in some last 3 years, so I would *guess* that it would be 50% of systems fielded out there. It hasn't been there on

Re: high load, no bottleneck

2013-09-28 Thread Roland C. Dowdeswell
On Sat, Sep 28, 2013 at 05:56:50PM +1000, matthew green wrote: ps: I had been meaning to rant like this for some time, your message just provided the incentive today! :-) i will note that i'm also a fan of using -o async FFS mounts in the right place. i just wouldn't do it for a file

Re: KNF and the C preprocessor

2012-12-10 Thread Roland C. Dowdeswell
On Mon, Dec 10, 2012 at 09:36:35AM -0600, David Young wrote: What do people think about setting stricter guidelines for using the C preprocessor than the guidelines from the past? Example guidelines: The C preprocessor MAY be used for 1 Lazy evaluation: ... 2 Lexical manipulation: ...

Re: core statement on fexecve, O_EXEC, and O_SEARCH

2012-12-04 Thread Roland C. Dowdeswell
On Tue, Dec 04, 2012 at 11:42:04PM +0700, Robert Elz wrote: Even chroot isn't a problem, unless you're tempted to view it as some kind of security mechanism. It really isn't - it is just namespace modification. Sure, by modifying the filesystem namespace a bunch of simple security

Re: fexecve, round 3

2012-11-25 Thread Roland C. Dowdeswell
On Sun, Nov 25, 2012 at 11:47:14PM +, David Laight wrote: On Sun, Nov 25, 2012 at 07:54:59PM +, Christos Zoulas wrote: Does everyone agrees on this interpretation? If we do, next steps are - describe threats this introduce to chrooted processes Given a chrooted process would

Re: disklabel problems on 3TB disc

2012-07-21 Thread Roland C. Dowdeswell
On Sat, Jul 21, 2012 at 07:12:15PM +0200, Edgar Fuß wrote: I don't know whether this is a disklabel(8) or disklabel(5) or disklabel(9) problem. You have to use gpt(8) for disks which have more than 2^32 sectors, I think, as the disklabel format does not allow them. -- Roland Dowdeswell

Re: O_NOACCESS?

2012-02-11 Thread Roland C. Dowdeswell
On Sat, Feb 11, 2012 at 07:12:32PM -0500, Mouse wrote: (Note that while there may be no use for #2 in userlevel code, unless perhaps if we add an fexecve() call, having it would be convenient in the kernel.) fexecve() makes a lot of sense too. So would an flink(), and indeed f*

Re: UFS and POSIX test suite

2012-01-01 Thread Roland C. Dowdeswell
On Sun, Jan 01, 2012 at 07:05:06PM +0100, Emmanuel Dreyfus wrote: I intentend to use it to hunt bugs for NetBSD FUSE. Without any surprise, there are a lot of failures, but I am a it surprised to see that NetBSD UFS fails the same tests most of the time. To give an exaample, the script

Re: Adding linux_link(2) system call, second round

2011-08-02 Thread Roland C. Dowdeswell
On Tue, Aug 02, 2011 at 08:52:56AM +, Emmanuel Dreyfus wrote: On Mon, Aug 01, 2011 at 07:20:30PM +, David Holland wrote: Sure. But what does it actually do, such that if you have a symlink it doesn't work to copy the symlink instead of hardlink it? That would probably work for