From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-x534.google.com (mail-ed1-x534.google.com [IPv6:2a00:1450:4864:20::534]) by sourceware.org (Postfix) with ESMTPS id AAA893857829 for ; Mon, 5 Apr 2021 11:39:39 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org AAA893857829 Received: by mail-ed1-x534.google.com with SMTP id p4so1957860edr.2 for ; Mon, 05 Apr 2021 04:39:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:cc:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=cEr6QthVIV45qE318vd3NhPg70iB+aRiDjMbUj7GiB8=; b=BC++POOIURwFssSOCAnp0bRJdjuMMbpp2sHJl35IJNOPIO9nAm7d70I0QpWzPkN5RU 4ak6sfiuyidYwhEInIeNvvHdmTjWoqOyT21L8oYyJcS5k8EYY0tr4ocBPmIEIqfVPFFg qIndgKBdoOPA/zjZsE/ZyZwhRiVYvr+BlEz3m8OwfVY9GgaKPT59FETB57qr95WT5+/y FN2iIWDfREQfmdtgpTzXI3j/XgUlxhNh6DusvkBh8vWFNp9ob1YURLhtRRsZPc6KOIId JS6bVUhkjBmsmllajP2nYKYf12lihHIHgERm4EXJgNilH90x1VPYkGIAN8hsi0EOCuKh wWVw== X-Gm-Message-State: AOAM5304kVdeXXdqtVpK8OsYNIP7oLeSbce0lD1tfnieuTDEgfGZYTwP COxlCVy1apaRxGeUXBk/PmFpQr3gb7s= X-Google-Smtp-Source: ABdhPJw9Og1g5nBb/KaELvuQmVpFoPibTEFzX59MDvsfPdzA1onaWVVuzVTlBI5AIRRplmlxRHGgqQ== X-Received: by 2002:a05:6402:1857:: with SMTP id v23mr4804837edy.362.1617622778627; Mon, 05 Apr 2021 04:39:38 -0700 (PDT) Received: from ?IPv6:2001:a61:2553:a401:cfc6:2039:a9ec:21ff? ([2001:a61:2553:a401:cfc6:2039:a9ec:21ff]) by smtp.gmail.com with ESMTPSA id dh27sm1084744edb.28.2021.04.05.04.39.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 05 Apr 2021 04:39:38 -0700 (PDT) Cc: mtk.manpages@gmail.com, linux-man@vger.kernel.org, libc-alpha@sourceware.org Subject: Re: [PATCH v5 25/35] get_robust_list.2: Use syscall(SYS_...); for system calls without a wrapper To: Alejandro Colomar References: <20210403194026.102818-1-alx.manpages@gmail.com> <20210404115847.78166-26-alx.manpages@gmail.com> From: "Michael Kerrisk (man-pages)" Message-ID: Date: Mon, 5 Apr 2021 13:39:37 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.0 MIME-Version: 1.0 In-Reply-To: <20210404115847.78166-26-alx.manpages@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-11.5 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, KAM_SHORT, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 Apr 2021 11:39:41 -0000 Hi ALex, On 4/4/21 1:58 PM, Alejandro Colomar wrote: > Signed-off-by: Alejandro Colomar > --- > man2/get_robust_list.2 | 19 ++++++++----------- > 1 file changed, 8 insertions(+), 11 deletions(-) Patch applied. Thanks, Michael > diff --git a/man2/get_robust_list.2 b/man2/get_robust_list.2 > index dd43cded2..b1368ddd3 100644 > --- a/man2/get_robust_list.2 > +++ b/man2/get_robust_list.2 > @@ -32,16 +32,16 @@ > get_robust_list, set_robust_list \- get/set list of robust futexes > .SH SYNOPSIS > .nf > -.B #include > -.B #include > +.BR "#include " \ > +" /* Definition of " "struct robust_list_head" " */" > +.BR "#include " " /* Definition of " SYS_* " constants */" > +.B #include > .PP > -.BI "long get_robust_list(int " pid ", struct robust_list_head **" head_ptr , > -.BI " size_t *" len_ptr ); > -.BI "long set_robust_list(struct robust_list_head *" head ", size_t " len ); > +.BI "long syscall(SYS_get_robust_list, int " pid , > +.BI " struct robust_list_head **" head_ptr ", size_t *" len_ptr ); > +.BI "long syscall(SYS_set_robust_list," > +.BI " struct robust_list_head *" head ", size_t " len ); > .fi > -.PP > -.IR Note : > -There are no glibc wrappers for these system calls; see NOTES. > .SH DESCRIPTION > These system calls deal with per-thread robust futex lists. > These lists are managed in user space: > @@ -138,9 +138,6 @@ could be found. > These system calls were added in Linux 2.6.17. > .SH NOTES > These system calls are not needed by normal applications. > -No support for them is provided in glibc. > -In the unlikely event that you want to call them directly, use > -.BR syscall (2). > .PP > A thread can have only one robust futex list; > therefore applications that wish > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/