From owner-freebsd-questions@freebsd.org Sun Jul 18 12:37:18 2021 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 1248166A615 for ; Sun, 18 Jul 2021 12:37:18 +0000 (UTC) (envelope-from raduicaiulian@gmail.com) Received: from mail-ej1-x633.google.com (mail-ej1-x633.google.com [IPv6:2a00:1450:4864:20::633]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4GSPcr2Td7z3vYg for ; Sun, 18 Jul 2021 12:37:16 +0000 (UTC) (envelope-from raduicaiulian@gmail.com) Received: by mail-ej1-x633.google.com with SMTP id qa36so1925254ejc.10 for ; Sun, 18 Jul 2021 05:37:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=to:from:subject:message-id:date:user-agent:mime-version :content-transfer-encoding:content-language; bh=0TNJCtd3a9pqUvu+IrpiA9QeQxHUClTTIz9kRYC9dj0=; b=AUHuIohLaDeBxkuY291Fe1gvmhcSH4ECuk8nF38MyHtIyMEm61w9r4vOJ20wb0/PE6 PQVtXxoG05G8UreLh+7DK5z+x1xX7z63TDFWu0MquDNmJqDE2TDVRPXh2PE1oe325r2e lSKxZpu6NEVkUdAK80GeT1V0CYKyOJWuUQxZEQpuUGC3rUVLoQxqcBcrU1d74h5JecnD 7hCBLddFCC/Oj/eRsYSi5tGL8MiWspBZdJbJA5xQ/AJHveOPEMbbEoydknYTXDchroFd 1ho71zOaGQUUIkV+39T5kXRxl38tAGuHH1SVkrJ8kgmrUiOYC/oN8LvEIXMExflLli4g GUag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-transfer-encoding:content-language; bh=0TNJCtd3a9pqUvu+IrpiA9QeQxHUClTTIz9kRYC9dj0=; b=ObVEVk6Xe0WvFiekxsWKNMQTQZMba5XwgNORu9nSRtYTrKsfIhVcNjThnFAco8cHp0 EOvUoEEuvXvwHpliKVg83DxMnY4ldMz1PB77Mk+G0J1+aovi7CMc5JHYAiu9FTZiTZk1 K7+yvftIRg+jb2fS3GzrwdJImyaohqQAsOLv8RkBa5qhSdUbFX1OXsuwAZW0wcHRBTDU 1b52uK8RYfij8KA+nGEq40WI+zMRe+OfxAegLbnZoUN4I2C26njLkirDK9FLYnpiseDH hk1STUAzHmgkhL5CNGlwoN1wSTdk6NfuCgEgmiShulPHLJ1En+W9smG9TRk91rr0RxEG jdcw== X-Gm-Message-State: AOAM533OiJkpYTfvpgjvOxIfjrB7cEBRKKoX54o3OhNNciwXBWYZ5C9M fgjIAqb65X8dRErLcyN/HGe6Pq8GJkg= X-Google-Smtp-Source: ABdhPJzxOFaVH/Bgi+aCQVUi/r73MwYurXlhuWNh5SBxHvu22/rgMK1hHZoOosXOx6DxVzGeb0qxwg== X-Received: by 2002:a17:906:c1da:: with SMTP id bw26mr22514399ejb.253.1626611834768; Sun, 18 Jul 2021 05:37:14 -0700 (PDT) Received: from [192.168.1.111] ([79.115.151.119]) by smtp.gmail.com with ESMTPSA id z5sm4783039ejn.65.2021.07.18.05.37.14 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 18 Jul 2021 05:37:14 -0700 (PDT) To: freebsd-questions@freebsd.org From: =?UTF-8?B?UsSDZHVpY8SDSXVsaWFu?= Subject: What is the deal with the pattern of structs from sys/sys/sysproto.h? Message-ID: Date: Sun, 18 Jul 2021 15:37:13 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Rspamd-Queue-Id: 4GSPcr2Td7z3vYg X-Spamd-Bar: ++ Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=AUHuIohL; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of raduicaiulian@gmail.com designates 2a00:1450:4864:20::633 as permitted sender) smtp.mailfrom=raduicaiulian@gmail.com X-Spamd-Result: default: False [3.00 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; FROM_EQ_ENVFROM(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; MID_RHS_MATCH_FROM(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[2a00:1450:4864:20::633:from]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; RECEIVED_SPAMHAUS_PBL(0.00)[79.115.151.119:received]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(1.00)[1.000]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; NEURAL_SPAM_MEDIUM(1.00)[1.000]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[2a00:1450:4864:20::633:from:127.0.2.255]; NEURAL_SPAM_LONG(1.00)[0.999]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::633:from]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-questions] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Jul 2021 12:37:18 -0000 Any idea why in "struct sendto_args" from "sys/sys/sysproto.h" all members are surrounded by "_l_" and "_r_" members? From what I can see many structs from that file follows this pattern, it has to do with structs padding and if so, why we need two of them for each member?