linux-kernel - Re: [PATCH v2 1/2] signal.7: Clearly describe ucontext kernel dump to userspace

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Date: Mon, 17 Jun 2024 12:54:05 +0200
From: Alejandro Colomar <alx@...nel.org>
To: Dev Jain <dev.jain@....com>
Cc: linux-man@...r.kernel.org, mingo@...nel.org, tglx@...utronix.de, 
	mark.rutland@....com, ryan.roberts@....com, broonie@...nel.org, suzuki.poulose@....com, 
	Anshuman.Khandual@....com, DeepakKumar.Mishra@....com, aneesh.kumar@...nel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] signal.7: Clearly describe ucontext kernel dump
 to userspace

On Tue, Jun 11, 2024 at 02:38:22PM GMT, Dev Jain wrote:
> The set of blocked signals is updated from struct sigaction after the
> kernel dumps ucontext. Mention this to avoid misunderstanding.
> 
> Signed-off-by: Dev Jain <dev.jain@....com>

Hi Dev,

I've applied this patch, with some minor tweaks:
<https://www.alejandro-colomar.es/src/alx/linux/man-pages/man-pages.git/commit/?h=contrib&id=9e1f221b2099ee2c936ce4d6562a61e1e253af47>

Have a lovely day!
Alex

> ---
>  man/man7/signal.7 | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/man/man7/signal.7 b/man/man7/signal.7
> index 4ba5306c8..7d22a7cfe 100644
> --- a/man/man7/signal.7
> +++ b/man/man7/signal.7
> @@ -282,7 +282,13 @@ the thread's alternate signal stack settings.
>  .B SA_SIGINFO
>  flag, then the above information is accessible via the
>  .I ucontext_t
> -object that is pointed to by the third argument of the signal handler.)
> +object that is pointed to by the third argument of the signal handler.
> +This object reflects the state at which the signal is delivered, rather
> +than in the handler;
> +for example, the mask of blocked signals stored in this object will not
> +contain the mask of new signals blocked through
> +.BR sigaction(2)).
> +
>  .IP (1.4)
>  Any signals specified in
>  .I act\->sa_mask
> -- 
> 2.34.1
> 
> 

-- 
<https://www.alejandro-colomar.es/>

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