Re: [PATCH] ptrace.2: Add details about usage of PTRACE_GET_SYSCALL_INFO

["Dmitry V. Levin" <ldv@strace.io>]

On Sat, Feb 25, 2023 at 01:05:24AM +0200, Φώτης Βαλασιάδης wrote:
> So, what about this?
> 
> diff --git a/man2/ptrace.2 b/man2/ptrace.2
> index 55d9fd36d..e5f49c289 100644
> --- a/man2/ptrace.2
> +++ b/man2/ptrace.2
> @@ -1111,6 +1111,16 @@ stop.
>   .B PTRACE_SYSCALL_INFO_NONE
>   No component of the union contains relevant information.
>   .RE
> +.IP
> +Note that in case of
> +.B PTRACE_SYSCALL
> +syscall entry or exit stops, the data returned by

I'm not sure about mentioning PTRACE_SYSCALL in this context as it's not
the only way to have the tracee stopped at a syscall stop.

> +.B PTRACE_GET_SYSCALL_INFO
> +is limited to type
> +.B PTRACE_SYSCALL_INFO_NONE
> +unless
> +.B PTRACE_O_TRACESYSGOOD
> +option is set before the corresponding ptrace stop has occurred.
>   .\"
>   .SS Death under ptrace
>   When a (possibly multithreaded) process receives a killing signal

-- 
ldv