From owner-freebsd-hackers@freebsd.org Thu Nov 30 00:30:17 2017 Return-Path: Delivered-To: freebsd-hackers@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 5627DDEE4AA for ; Thu, 30 Nov 2017 00:30:17 +0000 (UTC) (envelope-from khanzf@gmail.com) Received: from mail-yb0-x232.google.com (mail-yb0-x232.google.com [IPv6:2607:f8b0:4002:c09::232]) (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 108186B216 for ; Thu, 30 Nov 2017 00:30:17 +0000 (UTC) (envelope-from khanzf@gmail.com) Received: by mail-yb0-x232.google.com with SMTP id 5so2084986ybp.4 for ; Wed, 29 Nov 2017 16:30:17 -0800 (PST) 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=PsmABWVff9Djt1DsOQH87b4ySdnZxdurmCbDbqWy3Lk=; b=Ea6GDLRVIn+F/RQHch56wwNWCJ082RinafXZ7lCwzQVPsAztVaVJNrHO3TaCvBUzrl W0BkdlrVcso4L8ja/zMOTMaxwYxFa9rJR5VEskNCvQ0H7g/GJV3R6X1l3IbdBcuDwur6 bkFnsZZdPkMIbjTNUXTFOekp19TGLlKKjcAmAhsXBdeSYVspEaGZBZWs+9zIdCmALxdv PCL+ZoKt2WUA4Lf5PBCcRhppOrQKLxnpp+MkoEi4uw8CrYwlRn0cLADYeF8BhUGFzw03 keGptDWsWJ6FQILNdiqtss4yzpc6ea6HeaPGkFCRjz0GhUmBbAbSL7LJAeJMk0gFkRN4 zneA== 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=PsmABWVff9Djt1DsOQH87b4ySdnZxdurmCbDbqWy3Lk=; b=uhtvnAJ6c6UMTL6bywVNrtesSDeSss1tw3zDfaJ5pYtcS5h31JJg/Pdzz/JjwJZKh5 KP5hRPBUDzQ/nlkyZ7KpOYcRGZFV8rewJ4/YEKCRb7f7KeOB7+T2aXK69nPviU1Ap88f 2bZVIhxJJdEw0tiLbSS9uUt3DXFopGdkl1XtitH4BkD/UQKYwR9WjkmNkE5agEV44LZ7 RSwrEKB4SeYcx2dhUM+fcQkLhIzrzfHQGUremTa99DuOdt/kHCaoPW18aDaS97oXiJXC G+AEjoaBz6LDQ583ahi7FwbZsXkVfEQdWD6DhA4xP4oJEwD2lpxQ277Y/UKelExBYYJb HdHA== X-Gm-Message-State: AJaThX5KZbe7Of/9l80Zpjm4o04kGywECG0kSBFn/DOToRA1sFWgFwOp 1ckhU9FgzAVfItTwji7XCBraYbYLZv2g3PgowtivDzPF X-Google-Smtp-Source: AGs4zMYYhnd09fyjARQlJGqI9jTETRTw5Ithc1ar4v1VRsFzzb7yOT8I4rKi5znAx1CjjmlxjvgmS4ByRc5ftq9I13c= X-Received: by 10.37.133.73 with SMTP id f9mr473178ybn.100.1512001815764; Wed, 29 Nov 2017 16:30:15 -0800 (PST) MIME-Version: 1.0 Received: by 10.37.186.147 with HTTP; Wed, 29 Nov 2017 16:29:55 -0800 (PST) From: Farhan Khan Date: Wed, 29 Nov 2017 19:29:55 -0500 Message-ID: Subject: What does kern_ioctl do? To: freebsd-hackers@freebsd.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Nov 2017 00:30:17 -0000 Does anyone know what kern_ioctl does? It is called by sys_ioctl and located in /usr/src/sys/kern/sys_generic.c. OpenBSD and NetBSD do not have this function, so its FreeBSD-specific, but I do not understand its purpose. Any ideas? -- Farhan Khan PGP Fingerprint: B28D 2726 E2BC A97E 3854 5ABE 9A9F 00BC D525 16EE