linux-kernel - Re: Extended error reporting to user space?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20100217202312.GQ21783@one.firstfloor.org>
Date:	Wed, 17 Feb 2010 21:23:12 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	"Dr. David Alan Gilbert" <linux@...blig.org>
Cc:	Andi Kleen <andi@...stfloor.org>,
	"Nikita V. Youshchenko" <yoush@...msu.su>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Extended error reporting to user space?

> I'd wondered about some form of halfway house where the error
> value is expanded but could be truncated for compatibility - i.e.

Who would do the truncation?

> if at the moment we had:
> 
>     return -EINVAL;
> 
> it would become:
> 
>     return ERRORNUM(EINVAL, BADLENGTH);

x86 only has about 12 bits in the current ABI btw.

-Andi
--
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/