lkml.org 
[lkml]   [2014]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH] cmdline: Hide "debug" from /proc/cmdline
On Mon, 07 Apr 2014 14:24:45 +0930 Rusty Russell <rusty@rustcorp.com.au> wrote:

> Subject: param: hand arguments after -- straight to init
>
> The kernel passes any args it doesn't need through to init, except it
> assumes anything containing '.' belongs to the kernel (for a module).
> This change means all users can clearly distinguish which arguments
> are for init.
>
> For example, the kernel uses debug ("dee-bug") to mean log everything to
> the console, where systemd uses the debug from the Scandinavian "day-boog"
> meaning "fail to boot". If a future versions uses argv[] instead of
> reading /proc/cmdline, this confusion will be avoided.
>
> eg: test 'FOO="this is --foo"' -- 'systemd.debug="true true true"'
>
> Gives:
> argv[0] = '/debug-init'
> argv[1] = 'test'
> argv[2] = 'systemd.debug=true true true'
> envp[0] = 'HOME=/'
> envp[1] = 'TERM=linux'
> envp[2] = 'FOO=this is --foo'

This (user-facing) feature doesn't seem to have been documented
anywhere. Documentation/kernel-parameters.txt, I guess.


\
 
 \ /
  Last update: 2014-05-03 01:01    [W:0.175 / U:0.248 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site