Messages in this thread | | | Subject | Re: [PATCH] module: Allow to disable modsign in kernel cmdline | From | Randy Dunlap <> | Date | Mon, 27 Apr 2020 20:47:02 -0700 |
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On 4/27/20 8:43 PM, Tianjia Zhang wrote: > This change allows to disable modsign completely at the beginning, > and turn off by set the kernel cmdline `no_modsig_enforce` when > CONFIG_MODULE_SIG_FORCE is enabled. > > Yet another change allows to always show the current status of > modsign through `/sys/module/module/parameters/sig_enforce`. > > Signed-off-by: Jia Zhang <zhang.jia@linux.alibaba.com> > Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> > --- > kernel/module.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/kernel/module.c b/kernel/module.c > index 646f1e2330d2..0e68e1286377 100644 > --- a/kernel/module.c > +++ b/kernel/module.c > @@ -269,6 +269,14 @@ static void module_assert_mutex_or_preempt(void) > > static bool sig_enforce = IS_ENABLED(CONFIG_MODULE_SIG_FORCE); > module_param(sig_enforce, bool_enable_only, 0644); > +#ifdef CONFIG_MODULE_SIG_FORCE > +static int __init set_no_modsig_enforce(char *str) > +{ > + sig_enforce = false; > + return 1; > +} > +__setup("no_modsig_enforce", set_no_modsig_enforce); > +#endif /* !CONFIG_MODULE_SIG_FORCE */ > > /* > * Export sig_enforce kernel cmdline parameter to allow other subsystems rely >
Hi, Please document this cmdline option, probably in Documentation/admin-guide/kernel-parameters.txt.
thanks.
-- ~Randy
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