From: "H. Peter Anvin" <hpa@zytor.com>
To: Will Drewry <wad@chromium.org>
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-doc@vger.kernel.org, kernel-hardening@lists.openwall.com,
netdev@vger.kernel.org, x86@kernel.org, arnd@arndb.de,
davem@davemloft.net, mingo@redhat.com, oleg@redhat.com,
peterz@infradead.org, rdunlap@xenotime.net,
mcgrathr@chromium.org, tglx@linutronix.de, luto@mit.edu,
eparis@redhat.com, serge.hallyn@canonical.com, djm@mindrot.org,
scarybeasts@gmail.com, indan@nul.nu, pmoore@redhat.com,
akpm@linux-foundation.org, corbet@lwn.net,
eric.dumazet@gmail.com, markus@chromium.org,
keescook@chromium.org
Subject: Re: [PATCH v10 05/11] seccomp: add system call filtering using BPF
Date: Tue, 21 Feb 2012 22:32:51 -0800 [thread overview]
Message-ID: <4F448C13.1040407@zytor.com> (raw)
In-Reply-To: <1329845435-2313-5-git-send-email-wad@chromium.org>
On 02/21/2012 09:30 AM, Will Drewry wrote:
> +
> +/**
> + * struct seccomp_data - the format the BPF program executes over.
> + * @args: up to 6 system call arguments. When the calling convention is
> + * 32-bit, the arguments will still be at each args[X] offset.
> + * @instruction_pointer: at the time of the system call.
> + * @arch: indicates system call convention as an AUDIT_ARCH_* value
> + * as defined in <linux/audit.h>.
> + * @nr: the system call number
> + */
> +struct seccomp_data {
> + __u64 args[6];
> + __u64 instruction_pointer;
> + __u32 arch;
> + int nr;
> +};
>
This got flipped around for some reason... that is a problem if we ever
need to extend this to more than 6 arguments (I thought we had at least
one architecture which supported 7 arguments already, but I could just
be delusional.)
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2012-02-22 6:32 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-21 17:30 [PATCH v10 01/11] sk_run_filter: add support for custom load_pointer Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-21 17:30 ` [PATCH v10 02/11] seccomp: kill the seccomp_t typedef Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-21 17:30 ` [PATCH v10 03/11] asm/syscall.h: add syscall_get_arch Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-21 18:46 ` Roland McGrath
2012-02-21 18:46 ` Roland McGrath
2012-02-21 18:57 ` Will Drewry
2012-02-21 18:57 ` Will Drewry
2012-02-21 19:01 ` [PATCH v11 " Will Drewry
2012-02-21 19:01 ` Will Drewry
2012-02-21 17:30 ` [PATCH v10 04/11] arch/x86: add syscall_get_arch to syscall.h Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-21 17:30 ` [PATCH v10 05/11] seccomp: add system call filtering using BPF Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-22 6:32 ` H. Peter Anvin [this message]
2012-02-22 6:32 ` H. Peter Anvin
2012-02-22 19:48 ` Will Drewry
2012-02-22 19:48 ` Will Drewry
2012-02-22 8:19 ` Indan Zupancic
2012-02-22 8:19 ` Indan Zupancic
2012-02-22 14:23 ` Ben Hutchings
2012-02-22 19:47 ` Will Drewry
2012-02-22 19:47 ` Will Drewry
2012-02-22 23:46 ` Indan Zupancic
2012-02-22 23:46 ` Indan Zupancic
2012-02-22 23:51 ` Andrew Lutomirski
2012-02-22 23:51 ` Andrew Lutomirski
2012-02-23 0:08 ` Indan Zupancic
2012-02-23 1:07 ` H. Peter Anvin
2012-02-23 1:07 ` H. Peter Anvin
2012-02-22 23:03 ` Indan Zupancic
2012-02-22 19:47 ` Will Drewry
2012-02-22 19:47 ` Will Drewry
2012-02-22 19:53 ` H. Peter Anvin
2012-02-22 19:53 ` H. Peter Anvin
2012-02-22 20:01 ` Will Drewry
2012-02-22 20:01 ` Will Drewry
2012-02-23 0:25 ` Indan Zupancic
2012-02-21 17:30 ` [PATCH v10 06/11] seccomp: add SECCOMP_RET_ERRNO Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-21 22:41 ` Kees Cook
2012-02-21 22:41 ` Kees Cook
2012-02-21 22:48 ` Will Drewry
2012-02-21 17:30 ` [PATCH v10 07/11] signal, x86: add SIGSYS info and make it synchronous Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-22 8:34 ` Indan Zupancic
2012-02-22 8:34 ` Indan Zupancic
2012-02-22 19:48 ` Will Drewry
2012-02-22 19:48 ` Will Drewry
2012-02-22 23:38 ` Andrew Lutomirski
2012-02-22 23:38 ` Andrew Lutomirski
2012-02-22 23:53 ` Kees Cook
2012-02-22 23:53 ` Kees Cook
2012-02-23 0:05 ` Will Drewry
2012-02-23 0:05 ` Will Drewry
2012-02-23 0:08 ` Kees Cook
2012-02-23 0:08 ` Kees Cook
2012-02-23 0:29 ` H. Peter Anvin
2012-02-23 0:29 ` H. Peter Anvin
2012-02-23 0:50 ` Roland McGrath
2012-02-23 1:06 ` H. Peter Anvin
2012-02-23 1:06 ` H. Peter Anvin
2012-02-23 17:38 ` Roland McGrath
2012-02-23 17:38 ` Roland McGrath
2012-02-23 19:26 ` Will Drewry
2012-02-23 19:26 ` Will Drewry
2012-02-23 22:15 ` Indan Zupancic
2012-02-23 22:15 ` Indan Zupancic
2012-02-23 22:33 ` Markus Gutschke
2012-02-23 22:33 ` Markus Gutschke
2012-02-23 22:36 ` Will Drewry
2012-02-23 22:36 ` Will Drewry
2012-02-27 12:32 ` Indan Zupancic
2012-02-27 12:32 ` Indan Zupancic
2012-02-27 16:21 ` Will Drewry
2012-02-27 16:21 ` Will Drewry
2012-02-23 22:34 ` [kernel-hardening] " Will Drewry
2012-02-23 16:44 ` Will Drewry
2012-02-23 16:44 ` Will Drewry
2012-02-23 0:11 ` Roland McGrath
2012-02-23 0:11 ` Roland McGrath
2012-02-21 17:30 ` [PATCH v10 08/11] seccomp: Add SECCOMP_RET_TRAP Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-21 17:30 ` [PATCH v10 09/11] ptrace,seccomp: Add PTRACE_SECCOMP support Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-22 12:22 ` Indan Zupancic
2012-02-22 12:22 ` Indan Zupancic
2012-02-22 19:47 ` Will Drewry
2012-02-22 19:47 ` [kernel-hardening] " Will Drewry
2012-02-21 17:30 ` [PATCH v10 10/11] x86: Enable HAVE_ARCH_SECCOMP_FILTER Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-21 17:30 ` [PATCH v10 11/11] Documentation: prctl/seccomp_filter Will Drewry
2012-02-21 17:30 ` Will Drewry
2012-02-21 23:12 ` Kees Cook
2012-02-21 23:12 ` Kees Cook
2012-02-22 3:41 ` Will Drewry
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