Re: [PATCH v3] Allow trap to un-ignore SIGINT/SIGQUIT in async subshells

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

On Fri, Mar 29, 2024 at 04:39:01PM +0100, Johannes Altmanninger wrote:
>
> diff --git a/src/trap.c b/src/trap.c
> index cd84814..dbf81ea 100644
> --- a/src/trap.c
> +++ b/src/trap.c
> @@ -272,7 +272,7 @@ ignoresig(int signo)
>  		signal(signo, SIG_IGN);
>  	}
>  	if (!vforked)
> -		sigmode[signo - 1] = S_HARD_IGN;
> +		sigmode[signo - 1] = S_IGN;

This is buggy if sigmode is already S_HARD_IGN.  You can fix
this by moving the if statement inside the previous one.

Please also add a comment stating that sigmode has already been
initialised by setinteractive, as otherwise we may also lose a
hard ignore.

Thanks,
-- 
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
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