Re: [patch] printk from userspace

Alexander Viro
2002-08-14T04:16:30Z

On Wed, 14 Aug 2002, Benjamin LaHaise wrote:

> On Tue, Aug 13, 2002 at 09:11:55PM -0700, Andrew Morton wrote:
> > It requires root.
>
> Still, unlike kernel code that can be rate limited, this call cannot.
> Besides, isn't adding yet another syscall that's equivalent to write(2)
> a reason to take this patch and burn it along with the vomit its caused?

I have a better suggestion. How about we make write(2) on /dev/console to
act as printk()? IOW, how about making _all_ writes to console show up in
dmesg?

Then we don't need anything special to do logging _and_ we get output
of init scripts captured. For free. dmesg(8) would pick that up, klogd(8)
will work as is, etc.

Linus?