lkml.org 
[lkml]   [2020]   [Mar]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC v2 1/2] kernel/sysctl: support setting sysctl parameters from kernel command line
On Thu, Mar 26, 2020 at 07:58:29AM +0100, Michal Hocko wrote:
> On Wed 25-03-20 17:20:40, Eric W. Biederman wrote:
> > Vlastimil Babka <vbabka@suse.cz> writes:
> [...]
> > > + if (strncmp(param, "sysctl.", sizeof("sysctl.") - 1))
> > > + return 0;
> >
> > Is there any way we can use a slash separated path. I know
> > in practice there are not any sysctl names that don't have
> > a '.' in them but why should we artifically limit ourselves?
>
> Because this is the normal userspace interface? Why should it be any
> different from calling sysctl?

Right. The common method from userspace is dot-separated (which I agree
is weird, but it's been like this for ages: see manpages sysctl(8) and
sysctl.conf(5) for the details and examples). While "/" is accepted by
sysctl, the files shipped in /etc/sysctl.d/ are all using "." separators.

--
Kees Cook

\
 
 \ /
  Last update: 2020-03-26 08:21    [W:0.059 / U:4.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site