From mboxrd@z Thu Jan  1 00:00:00 1970
From: dave@horsfall.org (Dave Horsfall)
Date: Sat, 2 Dec 2017 10:21:23 +1100 (EST)
Subject: [TUHS] signals and blocked in I/O
In-Reply-To: <201712011910.vB1JAPVD068905@elf.torek.net>
References: <201712011910.vB1JAPVD068905@elf.torek.net>
Message-ID: <alpine.BSF.2.21.1712021015580.99186@aneurin.horsfall.org>

On Fri, 1 Dec 2017, Chris Torek wrote:

[...]

> This part is natural, since signal delivery means "run a function in 
> user space, with user privileges". If you're currently *in* the kernel 
> on behalf of some user process, that means you have to get *out* of it 
> in that same process.

Which leads to the classic comment (it's right up there with the famous 
"line 2238") along the lines of "we ask a process to do something to 
itself".

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."