From: Al Viro <viro@ZenIV.linux.org.uk>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Rich Felker <dalias@aerifal.cx>,
David Drysdale <drysdale@google.com>,
"Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Meredydd Luff <meredydd@senatehouse.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Miller <davem@davemloft.net>,
Thomas Gleixner <tglx@linutronix.de>,
Stephen Rothwell <sfr@canb.auug.org.au>,
Oleg Nesterov <oleg@redhat.com>, Ingo Molnar <mingo@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
Christoph Hellwig <hch@infradead.org>, X86 ML <x86@kernel.org>,
linux-arch <linux-arch@vger.kernel.org>,
Linux API <linux-api@vger.kernel.org>,
sparclinux@vger.kernel.org
Subject: Re: [PATCHv10 man-pages 5/5] execveat.2: initial man page for execveat(2)
Date: Sat, 10 Jan 2015 00:01:08 +0000 [thread overview]
Message-ID: <20150110000108.GT22149@ZenIV.linux.org.uk> (raw)
In-Reply-To: <CALCETrUpr5kqNm5M5z=RxM9T7DOQB3-Le2gxGM=D7+cpWVRQaQ@mail.gmail.com>
On Fri, Jan 09, 2015 at 03:24:12PM -0800, Andy Lutomirski wrote:
> I think that, if we really want to support clean fexecve on O_CLOEXEC
> scripts some day, the right way to do it is to fix the script
> interface for real. Have a special flag in the headers of script
> interpreters that support a new interface that says "when I'm a script
> interpreter, I expect an auxv entry AT_SCRIPT_FD with an open fd with
> CLOEXEC set". Then we can directly exec scripts by fd, even with
> O_CLOEXEC set, without any races.
Amazing. Let me see if I got it straight - you want a magical Linux-only
flag to mark the binaries that might be used as interpreters. _Plus_ the
Linux-only logics in their source to go with that. With corresponding kludges
to parsing the command line (you know, like #!/usr/bin/make -f as the first
line in a script - somehow it should recognize the deep magic of the oh
so fucking superior interface and suppress the normal behaviour). Maintained
by hell knows whom. Onna stick. Inna bun. CMOT Dibbler would be proud...
next prev parent reply other threads:[~2015-01-10 0:01 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-24 11:53 [PATCHv10 0/5] syscalls,x86,sparc: Add execveat() system call David Drysdale
2014-11-24 11:53 ` [PATCHv10 1/5] syscalls: implement " David Drysdale
2014-11-24 11:53 ` [PATCHv10 2/5] x86: Hook up execveat " David Drysdale
[not found] ` <1416830039-21952-3-git-send-email-drysdale-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2014-11-24 12:45 ` Thomas Gleixner
2014-11-24 17:06 ` Dan Carpenter
2014-11-24 18:26 ` David Drysdale
[not found] ` <CAHse=S-DS=NGC619Uhzkbd-EKa0D+HgBq3rE1czmLdoxAFswPg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-25 12:16 ` Dan Carpenter
2014-11-24 18:53 ` Thomas Gleixner
2014-11-24 11:53 ` [PATCHv10 3/5] syscalls: add selftest for execveat(2) David Drysdale
2014-11-24 11:53 ` [PATCHv10 4/5] sparc: Hook up execveat system call David Drysdale
2014-11-24 18:36 ` David Miller
2014-11-24 11:53 ` [PATCHv10 man-pages 5/5] execveat.2: initial man page for execveat(2) David Drysdale
2015-01-09 15:47 ` Michael Kerrisk (man-pages)
2015-01-09 16:13 ` Rich Felker
[not found] ` <20150109161302.GQ4574-C3MtFaGISjmo6RMmaWD+6Sb1p8zYI1N1@public.gmane.org>
2015-01-09 17:46 ` David Drysdale
[not found] ` <CAHse=S88Jy5ZKM_VY5onfvxX7dTMngnxuHfuLeSuzvKvQNP19A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-09 20:48 ` Rich Felker
2015-01-09 20:56 ` Al Viro
[not found] ` <20150109205626.GK22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-09 20:59 ` Rich Felker
[not found] ` <20150109205926.GT4574-C3MtFaGISjmo6RMmaWD+6Sb1p8zYI1N1@public.gmane.org>
2015-01-09 21:09 ` Al Viro
2015-01-09 21:28 ` Rich Felker
2015-01-09 21:50 ` Al Viro
2015-01-09 22:17 ` Rich Felker
2015-01-09 22:33 ` Al Viro
2015-01-09 22:42 ` Rich Felker
[not found] ` <20150109224252.GY4574-C3MtFaGISjmo6RMmaWD+6Sb1p8zYI1N1@public.gmane.org>
2015-01-09 22:57 ` Al Viro
2015-01-09 23:12 ` Rich Felker
2015-01-09 23:24 ` Andy Lutomirski
2015-01-09 23:37 ` Rich Felker
2015-01-10 0:01 ` Al Viro [this message]
2015-01-09 23:36 ` Al Viro
[not found] ` <20150109233644.GR22149-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2015-01-10 3:03 ` Al Viro
2015-01-10 3:41 ` Rich Felker
2015-01-10 4:14 ` Al Viro
2015-01-10 5:57 ` Rich Felker
2015-01-10 22:27 ` Eric W. Biederman
2015-01-11 1:15 ` Rich Felker
2015-01-11 2:09 ` Eric W. Biederman
[not found] ` <87oaq6oypl.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-01-11 11:02 ` Christoph Hellwig
2015-01-12 14:18 ` David Drysdale
[not found] ` <20150109212852.GU4574-C3MtFaGISjmo6RMmaWD+6Sb1p8zYI1N1@public.gmane.org>
2015-01-09 22:13 ` Eric W. Biederman
2015-01-09 22:38 ` Rich Felker
[not found] ` <20150109223843.GX4574-C3MtFaGISjmo6RMmaWD+6Sb1p8zYI1N1@public.gmane.org>
2015-01-10 1:17 ` Eric W. Biederman
[not found] ` <87mw5rtowa.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-01-10 1:33 ` Rich Felker
2015-01-12 11:33 ` David Drysdale
2015-01-12 16:07 ` Rich Felker
2015-01-10 7:13 ` Michael Kerrisk (man-pages)
2015-01-09 21:20 ` Eric W. Biederman
[not found] ` <877fwvy7ln.fsf-JOvCrm2gF+uungPnsOpG7nhyD016LWXt@public.gmane.org>
2015-01-09 21:31 ` Rich Felker
2015-01-10 7:43 ` Michael Kerrisk (man-pages)
2015-01-10 8:27 ` Michael Kerrisk (man-pages)
2015-01-10 13:31 ` Rich Felker
2015-01-10 7:38 ` Michael Kerrisk (man-pages)
2015-01-09 18:02 ` David Drysdale
[not found] ` <CAHse=S9kRj00eRbB+7DQd39Cso1O2LcmZpBVCbuUa9EwRQKv_w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-10 7:56 ` Michael Kerrisk (man-pages)
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