From patchwork Sun Feb 21 09:56:23 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 8368271 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 84762C0553 for ; Sun, 21 Feb 2016 09:56:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BA96E203E9 for ; Sun, 21 Feb 2016 09:56:44 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C3382202EB for ; Sun, 21 Feb 2016 09:56:43 +0000 (UTC) Received: from localhost ([::1]:39605 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXQks-0007PL-1h for patchwork-qemu-devel@patchwork.kernel.org; Sun, 21 Feb 2016 04:56:42 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58685) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXQkk-0007IS-Az for qemu-devel@nongnu.org; Sun, 21 Feb 2016 04:56:35 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aXQkh-0003Uv-4c for qemu-devel@nongnu.org; Sun, 21 Feb 2016 04:56:34 -0500 Received: from smtp1-g21.free.fr ([212.27.42.1]:14934) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aXQkg-0003UV-Ui for qemu-devel@nongnu.org; Sun, 21 Feb 2016 04:56:31 -0500 Received: from Quad.localdomain (unknown [IPv6:2a01:e34:eeee:5240:12c3:7bff:fe6b:9a76]) by smtp1-g21.free.fr (Postfix) with ESMTPS id CE1EF940193; Sun, 21 Feb 2016 10:53:53 +0100 (CET) From: Laurent Vivier To: Riku Voipio Date: Sun, 21 Feb 2016 10:56:23 +0100 Message-Id: <1456048583-23261-1-git-send-email-laurent@vivier.eu> X-Mailer: git-send-email 2.5.0 X-detected-operating-system: by eggs.gnu.org: Windows NT kernel [generic] [fuzzy] X-Received-From: 212.27.42.1 Cc: qemu-devel@nongnu.org, Laurent Vivier Subject: [Qemu-devel] [PATCH v2] linux-user: add getrandom() syscall X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP getrandom() has been introduced in kernel 3.17 and is now used during the boot sequence of Debian unstable (stretch/sid). Signed-off-by: Laurent Vivier --- v2: fix compilation on AArch64 by conditionally define getrandom() on TARGET_NR_getrandom AND __NR_getrandom. linux-user/syscall.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index a051669..5126aac 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -254,6 +254,9 @@ _syscall2(int, ioprio_get, int, which, int, who) #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) _syscall3(int, ioprio_set, int, which, int, who, int, ioprio) #endif +#if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) +_syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) +#endif static bitmask_transtbl fcntl_flags_tbl[] = { { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, @@ -8234,6 +8237,16 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, ret = get_errno(shutdown(arg1, arg2)); break; #endif +#if defined(TARGET_NR_getrandom) && defined(__NR_getrandom) + case TARGET_NR_getrandom: + p = lock_user(VERIFY_WRITE, arg1, arg2, 0); + if (!p) { + goto efault; + } + ret = get_errno(getrandom(p, arg2, arg3)); + unlock_user(p, arg1, ret); + break; +#endif #ifdef TARGET_NR_socket case TARGET_NR_socket: ret = do_socket(arg1, arg2, arg3);