[PATCH] ptrace.2: copy retval info for SECCOMP_GET_FILTER to right section

[PATCH] ptrace.2: copy retval info for SECCOMP_GET_FILTER to right section

[Jann Horn]

The "RETURN VALUE" section made a claim that was incorrect for
PTRACE_SECCOMP_GET_FILTER. Explicitly describe the behavior of
PTRACE_SECCOMP_GET_FILTER in the "RETURN VALUE" section (as usual), but
leave the now duplicate description in the section describing
PTRACE_SECCOMP_GET_FILTER, since the PTRACE_SECCOMP_GET_FILTER section
would otherwise probably become harder to understand.

Signed-off-by: Jann Horn <jannh-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
---
 man2/ptrace.2 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/man2/ptrace.2 b/man2/ptrace.2
index e1c3eec46..d78b8db2d 100644
--- a/man2/ptrace.2
+++ b/man2/ptrace.2
@@ -2206,7 +2206,10 @@ the report is sent only once.
 On success, the
 .B PTRACE_PEEK*
 requests return the requested data (but see NOTES),
-while other requests return zero.
+the
+.B PTRACE_SECCOMP_GET_FILTER
+request returns the number of instructions in the BPF program, and
+other requests return zero.
 .PP
 On error, all requests return \-1, and
 .I errno
-- 
2.16.0.rc1.238.g530d649a79-goog

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Re: [PATCH] ptrace.2: copy retval info for SECCOMP_GET_FILTER to right section

[Michael Kerrisk (man-pages)]

Hello Jann,

On 02/08/2018 11:46 PM, Jann Horn wrote:
> The "RETURN VALUE" section made a claim that was incorrect for
> PTRACE_SECCOMP_GET_FILTER. Explicitly describe the behavior of
> PTRACE_SECCOMP_GET_FILTER in the "RETURN VALUE" section (as usual), but
> leave the now duplicate description in the section describing
> PTRACE_SECCOMP_GET_FILTER, since the PTRACE_SECCOMP_GET_FILTER section
> would otherwise probably become harder to understand.

Thanks! Patch applied.

Cheers,

Michael

> Signed-off-by: Jann Horn <jannh-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
> ---
>  man2/ptrace.2 | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/man2/ptrace.2 b/man2/ptrace.2
> index e1c3eec46..d78b8db2d 100644
> --- a/man2/ptrace.2
> +++ b/man2/ptrace.2
> @@ -2206,7 +2206,10 @@ the report is sent only once.
>  On success, the
>  .B PTRACE_PEEK*
>  requests return the requested data (but see NOTES),
> -while other requests return zero.
> +the
> +.B PTRACE_SECCOMP_GET_FILTER
> +request returns the number of instructions in the BPF program, and
> +other requests return zero.
>  .PP
>  On error, all requests return \-1, and
>  .I errno
> 


-- 
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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