From owner-freebsd-questions@freebsd.org Sun Oct 29 09:03:36 2017 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 4FD2BE5E3C9 for ; Sun, 29 Oct 2017 09:03:36 +0000 (UTC) (envelope-from aynuxsakura@gmail.com) Received: from mail-io0-x233.google.com (mail-io0-x233.google.com [IPv6:2607:f8b0:4001:c06::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 16ED4721D7 for ; Sun, 29 Oct 2017 09:03:36 +0000 (UTC) (envelope-from aynuxsakura@gmail.com) Received: by mail-io0-x233.google.com with SMTP id 189so20979188iow.10 for ; Sun, 29 Oct 2017 02:03:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=+OWjLWvtidVK3aFaTp6hJdMutgbuA3JJygV5FZlOefM=; b=otALNNKxcjCYI2DU+gASaXStrLirKvB0WTXRu9wHSFpal4iBncJXOJIgNmJARMZi3c YaGhkEX/vqXGEuKco03CsgnQnAci1JKA9AaMBsp101+2iMgJuMNYG0J+n97HDUnBPM1f XTKcoCXp/jFrzF7Yr0pkea1z2xLUM+X/YZ0ArJSlwLvd8A1MZw2FFYTHbZnZOwROHDCN VR92RH9La689bygG1dvjKUyQMyNqm4SGALQ9MYi5a3XqbM9r1sMndZoYD3XpXxIio2qc CKhxp6nYjt3JS/PO9IOc2bQpqe9+puUKJb6DYf+cSWXQFD0c3SW1wYjCUbl0LCdhoTAW wOhQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=+OWjLWvtidVK3aFaTp6hJdMutgbuA3JJygV5FZlOefM=; b=lbjfxab4Lglctmp5WSeGw3N+yUDd4L6KU8pco4BwtrgiD4o2gAIo3RfWjgGPkF4lsd XaV4jFBvGTzC+N3fLbffKyFISErU4Uu6AjIWqH9i3RWoeEw9ZAoKxGgxJe30NQldPaF8 8FtjyK/D7BXRJ8PaqsUIkT95zJNIVdYDK+WDpct54Lzs7iZ9GwvqkQx3+TtZ/qnSk8i3 wJE1hVUMs+iLKWSEWREcsOLlu7ICx9PvWXXKqlioeeCnAFWLkO9Zlv2Zt+JcxYdiRhrx NZuDV9tHASNA4d7DfEW2PoF6GXrGLWA4tzaiBlzQqJTpDUiSPQmCWxHaggZSuheZU8CU j2FQ== X-Gm-Message-State: AMCzsaVmYRdkhe4C4dXep/zypEyt38Xd4Wjp+kVda2XscOSFTofIV2Tt XqVXxPSXROX9WsCcd3VSSelXE5PFwUIg8yKvAaFwyQ== X-Google-Smtp-Source: ABhQp+TaWClZAPT8l5CwTB3yzlWWG44uDCJEXbB4fzfYI96kaLEsRBNSAcZutF7QZvTrSKn2REfFN11haxBdxob2iok= X-Received: by 10.107.142.6 with SMTP id q6mr6626436iod.29.1509267815396; Sun, 29 Oct 2017 02:03:35 -0700 (PDT) MIME-Version: 1.0 Received: by 10.36.3.69 with HTTP; Sun, 29 Oct 2017 02:03:34 -0700 (PDT) From: =?UTF-8?B?6aKc5Z+65bG5?= Date: Sun, 29 Oct 2017 17:03:34 +0800 Message-ID: Subject: FreeBSD Kernel Question To: freebsd-questions@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Oct 2017 09:03:36 -0000 Hello! I would like to know how to provide an API in the kernel space to user space.Such As 'printf'. Thank you.