linux-kernel - Re: [PATCH] ptrace: add PTRACE_GET_RSEQ

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Message-ID: <878s7ewyk3.fsf@oldenburg.str.redhat.com>
Date:   Tue, 23 Feb 2021 17:15:08 +0100
From:   Florian Weimer <fweimer@...hat.com>
To:     Piotr Figiel <figiel@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        mathieu.desnoyers@...icios.com, peterz@...radead.org,
        paulmck@...nel.org, boqun.feng@...il.com, oleg@...hat.com,
        Alexey Dobriyan <adobriyan@...il.com>,
        Andrei Vagin <avagin@...il.com>, linux-kernel@...r.kernel.org,
        posk@...gle.com, kyurtsever@...gle.com, ckennelly@...gle.com,
        pjt@...gle.com, emmir@...gle.com, linux-man@...r.kernel.org,
        linux-api@...r.kernel.org
Subject: Re: [PATCH] ptrace: add PTRACE_GET_RSEQ_CONFIGURATION request

* Piotr Figiel:

> diff --git a/include/uapi/linux/ptrace.h b/include/uapi/linux/ptrace.h
> index 83ee45fa634b..d54cf6b6ce7c 100644
> --- a/include/uapi/linux/ptrace.h
> +++ b/include/uapi/linux/ptrace.h
> @@ -102,6 +102,14 @@ struct ptrace_syscall_info {
>  	};
>  };
>  
> +#define PTRACE_GET_RSEQ_CONFIGURATION	0x420f
> +
> +struct ptrace_rseq_configuration {
> +	__u64 rseq_abi_pointer;
> +	__u32 signature;
> +	__u32 pad;
> +};

The flags and the structure size appear to be missing here.

Thanks,
Florian