From mboxrd@z Thu Jan  1 00:00:00 1970
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Subject: Re: [PATCH] Linux: Define struct termios2 in <termios.h> under
 _GNU_SOURCE [BZ #10339]
Date: Thu, 11 Apr 2019 09:53:30 -0300
Message-ID: <db468a0f-4a7b-d251-601f-428885275d08@linaro.org>
References: <875zrnlakd.fsf@oldenburg2.str.redhat.com>
 <284e9c76-2411-b8f4-c4bc-c25c60c04cf7@linaro.org>
 <87imvker6t.fsf@oldenburg2.str.redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
Return-path: <libc-alpha-return-101343-glibc-alpha=m.gmane.org@sourceware.org>
List-Unsubscribe: <mailto:libc-alpha-unsubscribe-glibc-alpha=m.gmane.org@sourceware.org>
List-Subscribe: <mailto:libc-alpha-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/libc-alpha/>
List-Post: <mailto:libc-alpha@sourceware.org>
List-Help: <mailto:libc-alpha-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: libc-alpha-owner@sourceware.org
In-Reply-To: <87imvker6t.fsf@oldenburg2.str.redhat.com>
To: Florian Weimer <fweimer@redhat.com>
Cc: libc-alpha@sourceware.org, hpa@zytor.com, linux-api@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
List-Id: linux-api@vger.kernel.org



On 11/04/2019 08:07, Florian Weimer wrote:
> * Adhemerval Zanella:
> 
>> This allows us to adjust the baud rates to non-standard values using termios
>> interfaces without to resorting to add new headers and use a different API
>> (ioctl).
> 
> How much symbol versioning will be required for this change?

I think all interfaces that have termios as input for sparc and mips 
(tcgetattr, tcsetattr, cfmakeraw, cfgetispeed, cfgetospeed, cfsetispeed,
cfsetospeed, cfsetspeed).

Alpha will also need to use termios1 for pre-4.20 kernels.

> 
>> As Peter Anvin has indicated, he create a POC [1] with the aforementioned
>> new interfaces.  It has not been rebased against master, more specially against
>> my termios refactor to simplify the multiple architecture header definitions,
>> but I intend to use as a base.
> 
> Reference [1] is still missing. 8-(

Oops... it is https://git.zytor.com/users/hpa/glibc/termbaud.git/log/?h=wip.termbaud

> 
> Thanks,
> Florian
> 

From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=HNI+=SN=lists.ozlabs.org=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
	aws-us-west-2-korg-lkml-1.web.codeaurora.org
X-Spam-Level: 
X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED,
	HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED
	autolearn=ham autolearn_force=no version=3.4.0
Received: from mail.kernel.org (mail.kernel.org [198.145.29.99])
	by smtp.lore.kernel.org (Postfix) with ESMTP id D7B2BC10F13
	for <linuxppc-dev@archiver.kernel.org>; Thu, 11 Apr 2019 13:12:05 +0000 (UTC)
Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by mail.kernel.org (Postfix) with ESMTPS id 1A0712133D
	for <linuxppc-dev@archiver.kernel.org>; Thu, 11 Apr 2019 13:12:04 +0000 (UTC)
Authentication-Results: mail.kernel.org;
	dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="IeiT86ok"
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1A0712133D
Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org
Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org
Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])
	by lists.ozlabs.org (Postfix) with ESMTP id 44g1dZ5Nt3zDqWY
	for <linuxppc-dev@archiver.kernel.org>; Thu, 11 Apr 2019 23:12:02 +1000 (AEST)
Authentication-Results: lists.ozlabs.org;
 spf=pass (mailfrom) smtp.mailfrom=linaro.org
 (client-ip=2607:f8b0:4864:20::a42; helo=mail-vk1-xa42.google.com;
 envelope-from=adhemerval.zanella@linaro.org; receiver=<UNKNOWN>)
Authentication-Results: lists.ozlabs.org;
 dmarc=pass (p=none dis=none) header.from=linaro.org
Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key;
 unprotected) header.d=linaro.org header.i=@linaro.org header.b="IeiT86ok"; 
 dkim-atps=neutral
Received: from mail-vk1-xa42.google.com (mail-vk1-xa42.google.com
 [IPv6:2607:f8b0:4864:20::a42])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by lists.ozlabs.org (Postfix) with ESMTPS id 44g1DK1tgWzDqBh
 for <linuxppc-dev@lists.ozlabs.org>; Thu, 11 Apr 2019 22:53:36 +1000 (AEST)
Received: by mail-vk1-xa42.google.com with SMTP id x84so1340700vkd.1
 for <linuxppc-dev@lists.ozlabs.org>; Thu, 11 Apr 2019 05:53:36 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google;
 h=to:cc:references:from:openpgp:autocrypt:subject:message-id:date
 :user-agent:mime-version:in-reply-to:content-language
 :content-transfer-encoding;
 bh=3JTEDfvkvPHmwWxHWf7JMlZv7oLMArA6TK0bmFzpDzQ=;
 b=IeiT86ok9LDT6p7M1/jmkCAnK/jCCMC8uANR7IwxU2K3Mc1nSw/2Y+GW6xSlx7pmLw
 lL103utLPeGLkdd+gVUo4DH0/dnEwg/l8NO1fgE+CMn5A8YjVVX4H7ebBbhXk8Ve1ici
 1Czr4zB/RLUHUAtlYMupLeeAW4jjZsjhKzmwVGQayWj07asG7+hah/MtjXnTT/oFcHIr
 +BqSz2CQNd04RlQ2kG7/xTv9qO4OBcBzsEdcC0ndxKyBFKNfNaXjCAMQwcJjcIg2gIY6
 WL4NvdwAB5GnK1SSnuhC8Df5IlFsxUTOZCSc5+B+5fPjoDkYzLnJ/KDafxrGtGy05Aax
 acZw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:to:cc:references:from:openpgp:autocrypt:subject
 :message-id:date:user-agent:mime-version:in-reply-to
 :content-language:content-transfer-encoding;
 bh=3JTEDfvkvPHmwWxHWf7JMlZv7oLMArA6TK0bmFzpDzQ=;
 b=EUcR7Vf91hm2mXLyS5duIRC0msXkUm2IZxNRVBh9iV6YJpYdwTWtLK+ABAqmUW5ovw
 WqsRu99qswLUMwlz4g8KPCGa7AGNb63w2d47CKdlDFp5cHzvsHhz9q5vgKZe+ND2CnjM
 6b3uCPZZ5+GhAHK817LAdovUYgnSRRxFEBEmsDl2QErDRqN4/crU6tU2ybDR9UDwFblj
 kEbmmHQKamsa7Gg+/Q/tLNXIiJUtdHWX9EIDFy/b+OiVPBVr0kbnCIb2OsAwnMxzlUXW
 ELu3+XIhlkFkhL6AXi6ro8ymswojUCaRnveX+lqLaSXfeYE7R31dERu5GJksf3kU8oJk
 GRUQ==
X-Gm-Message-State: APjAAAWWvDiTGFgSVbnYE8E8zvYmJxLA1c444+WpikVnqMxDuixNyt0j
 eOU9prLKXyXdBFofC+feQXHLQ0tT57M=
X-Google-Smtp-Source: APXvYqx4Wnx439L3eCSqXia05LHSMv2s5NKBtUyKPJG5UVw2p8QJPj+Plz7aKjQ/o9PCY1pWsrGJHQ==
X-Received: by 2002:a1f:28d7:: with SMTP id o206mr26835348vko.36.1554987212637; 
 Thu, 11 Apr 2019 05:53:32 -0700 (PDT)
Received: from [192.168.1.132] ([177.194.125.152])
 by smtp.googlemail.com with ESMTPSA id d133sm8689180vke.19.2019.04.11.05.53.31
 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
 Thu, 11 Apr 2019 05:53:32 -0700 (PDT)
To: Florian Weimer <fweimer@redhat.com>
References: <875zrnlakd.fsf@oldenburg2.str.redhat.com>
 <284e9c76-2411-b8f4-c4bc-c25c60c04cf7@linaro.org>
 <87imvker6t.fsf@oldenburg2.str.redhat.com>
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Openpgp: preference=signencrypt
Autocrypt: addr=adhemerval.zanella@linaro.org; prefer-encrypt=mutual; keydata=
 mQINBFcVGkoBEADiQU2x/cBBmAVf5C2d1xgz6zCnlCefbqaflUBw4hB/bEME40QsrVzWZ5Nq
 8kxkEczZzAOKkkvv4pRVLlLn/zDtFXhlcvQRJ3yFMGqzBjofucOrmdYkOGo0uCaoJKPT186L
 NWp53SACXguFJpnw4ODI64ziInzXQs/rUJqrFoVIlrPDmNv/LUv1OVPKz20ETjgfpg8MNwG6
 iMizMefCl+RbtXbIEZ3TE/IaDT/jcOirjv96lBKrc/pAL0h/O71Kwbbp43fimW80GhjiaN2y
 WGByepnkAVP7FyNarhdDpJhoDmUk9yfwNuIuESaCQtfd3vgKKuo6grcKZ8bHy7IXX1XJj2X/
 BgRVhVgMHAnDPFIkXtP+SiarkUaLjGzCz7XkUn4XAGDskBNfbizFqYUQCaL2FdbW3DeZqNIa
 nSzKAZK7Dm9+0VVSRZXP89w71Y7JUV56xL/PlOE+YKKFdEw+gQjQi0e+DZILAtFjJLoCrkEX
 w4LluMhYX/X8XP6/C3xW0yOZhvHYyn72sV4yJ1uyc/qz3OY32CRy+bwPzAMAkhdwcORA3JPb
 kPTlimhQqVgvca8m+MQ/JFZ6D+K7QPyvEv7bQ7M+IzFmTkOCwCJ3xqOD6GjX3aphk8Sr0dq3
 4Awlf5xFDAG8dn8Uuutb7naGBd/fEv6t8dfkNyzj6yvc4jpVxwARAQABtElBZGhlbWVydmFs
 IFphbmVsbGEgTmV0dG8gKExpbmFybyBWUE4gS2V5KSA8YWRoZW1lcnZhbC56YW5lbGxhQGxp
 bmFyby5vcmc+iQI3BBMBCAAhBQJXFRpKAhsDBQsJCAcDBRUKCQgLBRYCAwEAAh4BAheAAAoJ
 EKqx7BSnlIjv0e8P/1YOYoNkvJ+AJcNUaM5a2SA9oAKjSJ/M/EN4Id5Ow41ZJS4lUA0apSXW
 NjQg3VeVc2RiHab2LIB4MxdJhaWTuzfLkYnBeoy4u6njYcaoSwf3g9dSsvsl3mhtuzm6aXFH
 /Qsauav77enJh99tI4T+58rp0EuLhDsQbnBic/ukYNv7sQV8dy9KxA54yLnYUFqH6pfH8Lly
 sTVAMyi5Fg5O5/hVV+Z0Kpr+ZocC1YFJkTsNLAW5EIYSP9ftniqaVsim7MNmodv/zqK0IyDB
 GLLH1kjhvb5+6ySGlWbMTomt/or/uvMgulz0bRS+LUyOmlfXDdT+t38VPKBBVwFMarNuREU2
 69M3a3jdTfScboDd2ck1u7l+QbaGoHZQ8ZNUrzgObltjohiIsazqkgYDQzXIMrD9H19E+8fw
 kCNUlXxjEgH/Kg8DlpoYJXSJCX0fjMWfXywL6ZXc2xyG/hbl5hvsLNmqDpLpc1CfKcA0BkK+
 k8R57fr91mTCppSwwKJYO9T+8J+o4ho/CJnK/jBy1pWKMYJPvvrpdBCWq3MfzVpXYdahRKHI
 ypk8m4QlRlbOXWJ3TDd/SKNfSSrWgwRSg7XCjSlR7PNzNFXTULLB34sZhjrN6Q8NQZsZnMNs
 TX8nlGOVrKolnQPjKCLwCyu8PhllU8OwbSMKskcD1PSkG6h3r0AquQINBFcVGkoBEACgAdbR
 Ck+fsfOVwT8zowMiL3l9a2DP3Eeak23ifdZG+8Avb/SImpv0UMSbRfnw/N81IWwlbjkjbGTu
 oT37iZHLRwYUFmA8fZX0wNDNKQUUTjN6XalJmvhdz9l71H3WnE0wneEM5ahu5V1L1utUWTyh
 VUwzX1lwJeV3vyrNgI1kYOaeuNVvq7npNR6t6XxEpqPsNc6O77I12XELic2+36YibyqlTJIQ
 V1SZEbIy26AbC2zH9WqaKyGyQnr/IPbTJ2Lv0dM3RaXoVf+CeK7gB2B+w1hZummD21c1Laua
 +VIMPCUQ+EM8W9EtX+0iJXxI+wsztLT6vltQcm+5Q7tY+HFUucizJkAOAz98YFucwKefbkTp
 eKvCfCwiM1bGatZEFFKIlvJ2QNMQNiUrqJBlW9nZp/k7pbG3oStOjvawD9ZbP9e0fnlWJIsj
 6c7pX354Yi7kxIk/6gREidHLLqEb/otuwt1aoMPg97iUgDV5mlNef77lWE8vxmlY0FBWIXuZ
 yv0XYxf1WF6dRizwFFbxvUZzIJp3spAao7jLsQj1DbD2s5+S1BW09A0mI/1DjB6EhNN+4bDB
 SJCOv/ReK3tFJXuj/HbyDrOdoMt8aIFbe7YFLEExHpSk+HgN05Lg5TyTro8oW7TSMTk+8a5M
 kzaH4UGXTTBDP/g5cfL3RFPl79ubXwARAQABiQIfBBgBCAAJBQJXFRpKAhsMAAoJEKqx7BSn
 lIjvI/8P/jg0jl4Tbvg3B5kT6PxJOXHYu9OoyaHLcay6Cd+ZrOd1VQQCbOcgLFbf4Yr+rE9l
 mYsY67AUgq2QKmVVbn9pjvGsEaz8UmfDnz5epUhDxC6yRRvY4hreMXZhPZ1pbMa6A0a/WOSt
 AgFj5V6Z4dXGTM/lNManr0HjXxbUYv2WfbNt3/07Db9T+GZkpUotC6iknsTA4rJi6u2ls0W9
 1UIvW4o01vb4nZRCj4rni0g6eWoQCGoVDk/xFfy7ZliR5B+3Z3EWRJcQskip/QAHjbLa3pml
 xAZ484fVxgeESOoaeC9TiBIp0NfH8akWOI0HpBCiBD5xaCTvR7ujUWMvhsX2n881r/hNlR9g
 fcE6q00qHSPAEgGr1bnFv74/1vbKtjeXLCcRKk3Ulw0bY1OoDxWQr86T2fZGJ/HIZuVVBf3+
 gaYJF92GXFynHnea14nFFuFgOni0Mi1zDxYH/8yGGBXvo14KWd8JOW0NJPaCDFJkdS5hu0VY
 7vJwKcyHJGxsCLU+Et0mryX8qZwqibJIzu7kUJQdQDljbRPDFd/xmGUFCQiQAncSilYOcxNU
 EMVCXPAQTteqkvA+gNqSaK1NM9tY0eQ4iJpo+aoX8HAcn4sZzt2pfUB9vQMTBJ2d4+m/qO6+
 cFTAceXmIoFsN8+gFN3i8Is3u12u8xGudcBPvpoy4OoG
Subject: Re: [PATCH] Linux: Define struct termios2 in <termios.h> under
 _GNU_SOURCE [BZ #10339]
Message-ID: <db468a0f-4a7b-d251-601f-428885275d08@linaro.org>
Date: Thu, 11 Apr 2019 09:53:30 -0300
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101
 Thunderbird/60.6.1
MIME-Version: 1.0
In-Reply-To: <87imvker6t.fsf@oldenburg2.str.redhat.com>
Content-Type: text/plain; charset=utf-8
Content-Language: en-GB
Content-Transfer-Encoding: 8bit
X-BeenThere: linuxppc-dev@lists.ozlabs.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org>
List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>,
 <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>
List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev/>
List-Post: <mailto:linuxppc-dev@lists.ozlabs.org>
List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>
List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>,
 <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>
Cc: linux-api@vger.kernel.org, libc-alpha@sourceware.org,
 linuxppc-dev@lists.ozlabs.org, hpa@zytor.com
Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org
Sender: "Linuxppc-dev"
 <linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org>



On 11/04/2019 08:07, Florian Weimer wrote:
> * Adhemerval Zanella:
> 
>> This allows us to adjust the baud rates to non-standard values using termios
>> interfaces without to resorting to add new headers and use a different API
>> (ioctl).
> 
> How much symbol versioning will be required for this change?

I think all interfaces that have termios as input for sparc and mips 
(tcgetattr, tcsetattr, cfmakeraw, cfgetispeed, cfgetospeed, cfsetispeed,
cfsetospeed, cfsetspeed).

Alpha will also need to use termios1 for pre-4.20 kernels.

> 
>> As Peter Anvin has indicated, he create a POC [1] with the aforementioned
>> new interfaces.  It has not been rebased against master, more specially against
>> my termios refactor to simplify the multiple architecture header definitions,
>> but I intend to use as a base.
> 
> Reference [1] is still missing. 8-(

Oops... it is https://git.zytor.com/users/hpa/glibc/termbaud.git/log/?h=wip.termbaud

> 
> Thanks,
> Florian
>