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Date: Fri, 12 Aug 2011 19:00:08 -0700 From: Greg KH <greg@...ah.com> To: Tonda <as@...milov.cz> Cc: viro@...iv.linux.org.uk, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: Module hiding files controlled by sysfs On Fri, Aug 12, 2011 at 01:55:03AM +0200, Tonda wrote: > diff --git a/fs/hidefiles/hidefiles.c b/fs/hidefiles/hidefiles.c You forgot your Signed-off-by: line and the rest of the changelog information explaining what this is, why we would want it, and how you are going to maintain it. > +static void disable_write_protection(void) > +{ > + unsigned long value; > + asm volatile("mov %%cr0,%0" : "=r"(value)); > + value &= (~WRITEABLE); > + asm volatile("mov %0,%%cr0" : : "r"(value)); > +} > + > +static void enable_write_protection(void) > +{ > + unsigned long value; > + asm volatile("mov %%cr0,%0" : "=r"(value)); > + value |= WRITEABLE; > + asm volatile ("mov %0,%%cr0" : : "r"(value)); > +} Fun stuff, you can do nasty things to a system with this... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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