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SubjectRe: [PATCH 2/2] prctl.2: document SECCOMP_MODE_FILTER vs EFAULT
On 09/26/2014 12:47 AM, Kees Cook wrote:
> This notes the distinction made between EINVAL and EFAULT when attempting
> to use SECCOMP_MODE_FILTER with PR_SET_SECCOMP.

Thanks, Kees. Applied.

Cheers,

Michael


> Suggested-by: Andy Lutomirski <luto@amacapital.net>
> Signed-off-by: Kees Cook <keescook@chromium.org>
> ---
> man2/prctl.2 | 23 +++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
>
> diff --git a/man2/prctl.2 b/man2/prctl.2
> index 1199891..b7ddaac 100644
> --- a/man2/prctl.2
> +++ b/man2/prctl.2
> @@ -825,6 +825,19 @@ is set appropriately.
> .I arg2
> is an invalid address.
> .TP
> +.B EFAULT
> +.I option
> +is
> +.BR PR_SET_SECCOMP ,
> +.I arg2
> +is
> +.BR SECCOMP_MODE_FILTER ,
> +the system was built with
> +.BR CONFIG_SECCOMP_FILTER
> +and
> +.I arg3
> +is an invalid address.
> +.TP
> .B EINVAL
> The value of
> .I option
> @@ -859,6 +872,16 @@ and the kernel was not configured with
> .B EINVAL
> .I option
> is
> +.BR PR_SET_SECCOMP ,
> +.I arg2
> +is
> +.BR SECCOMP_MODE_FILTER ,
> +and the kernel was not configured with
> +.BR CONFIG_SECCOMP_FILTER .
> +.TP
> +.B EINVAL
> +.I option
> +is
> .BR PR_SET_MM ,
> and one of the following is true
> .RS
>


--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/


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