From nobody Sat Apr 4 08:52:23 2026 X-Original-To: freebsd-current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fnq964xJzz6YG4K for ; Sat, 04 Apr 2026 08:52:26 +0000 (UTC) (envelope-from des@freebsd.org) Received: from smtp.freebsd.org (smtp.freebsd.org [IPv6:2610:1c1:1:606c::24b:4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R13" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fnq960VpXz3JQn; Sat, 04 Apr 2026 08:52:26 +0000 (UTC) (envelope-from des@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1775292746; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yvIXE9/i/7FHf4PGzElEt6oFVuComQe4dP7sUE6QBNs=; b=rWBHoTbBpvzDY4gvo+4q19O7Y7fT7d5v+T6YXyVZsXP5vufeWgTQu0AcowwQUU1W6jcpEr fNeI7jT+pTszi9hh3xFaAe7AueKfvTYFw3UTQLvefi29ayFiTkwYfSJ/u9HEXjmsgi9Fvt e3QfkN1GmR/5HDPFmGrGjwMAtWZqgD4DiI2a75GpXDNd0PZOmQ3GLmvL7XByPPJuPOy0pN L4hoSXLMJweOTjpD+ILaNZ7thImiZzuskYB6AWamr/hMZahoOy/B5MEChedgmXvZs0c1BW mOuhShXjQHDsETehrs39XAHC3R9D3N8If7a986CqOnMwbbI/CDAr7x40MTqETg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1775292746; a=rsa-sha256; cv=none; b=KY1VC6lJcH8kqjP+kxJUEeJr3SK/0g3rzwr+QsZiL90bJWxLP+SPo0CYKfwYYtbZltfkcy RV72vxHHAk+O6twI/YB7o928fhxNyM2NjGhqhp5BbsA+O+zFWLypkv5jwka5BbmwMsWdv7 0pdq6ZHQwZ5LUliwvccVVOUGyqHBJ7xv+ud1VhuYyz3Hyi0VQnWYvATa4RYNm9vOhgMIYE KW7JtMj3hNITMl46/OHbKECkxHARSX7KJV0w3WtfnCgaIJ7jb5Gqd/KeCHyHsOaqOY8rEU Gi7t+zq5TycppQNmtfREuCYmZktQIN5EE2/RVO6PKHPt1piDj/sLJq0Nd3vT9Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1775292746; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yvIXE9/i/7FHf4PGzElEt6oFVuComQe4dP7sUE6QBNs=; b=oYuCswRPPpO/Befr/+d+F1j9oqdCaxkUTuqxrlthpv3GJ6ykKoNxwS+F7/3UmjQRK6bDYO ZQGkVgVkoCOcDF57z+SsY9KM+o59O21dMJ+/OBwYYV7UXecVvKMPajfDH4IEfuY4TjVRdL hUbxHcd2JgM8DWp9hwChWRgzplkTLHR/UyCQExenFVKGpIVHvd/ywEmwOq9mVjeourtWAO Nn4fHZJUD3+A1Z/grDtaU6PvCozE0adibKYCh0ADNNLzrOTak/87/LOczgX47V9SBuBDSX z9NPy+d4fc9Ig1QgSQkY+GrAE1BqGNJSZIznd6VV/DbssQcK0Pvns4Z8cpO5PQ== Received: from ltc.des.dev (lfbn-nan-1-698-103.w86-236.abo.wanadoo.fr [86.236.35.103]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: des) by smtp.freebsd.org (Postfix) with ESMTPSA id 4fnq9561l9zws1; Sat, 04 Apr 2026 08:52:25 +0000 (UTC) (envelope-from des@freebsd.org) Received: by ltc.des.dev (Postfix, from userid 1001) id F1C515C3B9; Sat, 04 Apr 2026 10:52:23 +0200 (CEST) From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= To: Rick Macklem Cc: FreeBSD CURRENT Subject: Re: Getting boottime early in booting In-Reply-To: (Rick Macklem's message of "Fri, 3 Apr 2026 18:05:13 -0700") References: User-Agent: Gnus/5.13 (Gnus v5.13) Date: Sat, 04 Apr 2026 10:52:23 +0200 Message-ID: <86mrzjumyg.fsf@ltc.des.dev> List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Rick Macklem writes: > 1 - I need a value that will be different each time the machine boots. > I would normally use getboottime(), but for the NFS root fs mount, > it just returns 0. > Any ideas w.r.t. something I can acquire early in booting that will > change each time the system is booted? Just use arc4random(9). DES --=20 Dag-Erling Sm=C3=B8rgrav - des@FreeBSD.org