Messages in this thread | | | Date | Fri, 2 May 2014 15:34:09 -0700 | From | Andrew Morton <> | Subject | Re: [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.
| |