From patchwork Sun May 19 20:24:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elizabeth Figura X-Patchwork-Id: 13667912 Received: from mail.codeweavers.com (mail.codeweavers.com [4.36.192.163]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C0C3C6E61A; Sun, 19 May 2024 20:25:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=4.36.192.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716150318; cv=none; b=W27RmSsnIH+mB4X3O7CNT1dCEuU01HbKIgjtb+3DifOxsdzPMNtv7VFj72m+80BKHNL2Jd47WZmo9EdoGj1ViSHPLpW4Tyft4BsReJj/g+LA2omY/ZInhvtO+XNl8Hsvd09H4MmG6E2KwQ0dok9i+NQZXU+PLcvXnWkvKLiHVRc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716150318; c=relaxed/simple; bh=oMapuKPenFTpinOVOD0tbTg6ULyTL1PTui+UWvCHueQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BCWMOkq4qRrKENcf0snp7W+dydAuymL71rNTs0pcO98T2GA8yvwPJ4Rvj/Ra2AFevNtwdhgR68T/oYq/9FbhZXA3TeNPGLHenQy8QNgm1Tcnl7+GDu69ibUKDCOKkw7vqVt8v+t6VxTIyR8Mkl931zEid03cNDR/B+DncQqTWAM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=codeweavers.com; spf=pass smtp.mailfrom=codeweavers.com; dkim=pass (2048-bit key) header.d=codeweavers.com header.i=@codeweavers.com header.b=dLTUVJxV; arc=none smtp.client-ip=4.36.192.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=codeweavers.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=codeweavers.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=codeweavers.com header.i=@codeweavers.com header.b="dLTUVJxV" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=codeweavers.com; s=s1; h=Message-ID:Date:Subject:Cc:To:From:Sender; bh=PF2vH8n2a0SUqAmtsVo3n+FbtCkuTlLPVMtq6Luw9QI=; b=dLTUVJxVMWgzMFG4BxNRM6Shcd J2lKH7bur0EC2yaoPLy4cGqAfY+FCEFcbDQRDJjB3kwSxcEe3JCEM6VrQ2cxdQRKA8Znt8EdJbJk9 8ZFNbZJRDXLfqj+PK0r5EH1ZsoctWg9XbTAP69/ppmuiS+anKmHhA3jOHUK9VQyv6VxsvSxEWQmo5 kW+TRPAnE8rMVWOSBRQMixP0uoO6cIIedC0FSKcRRPLXUCK0gZPDdUaztGp4CkzQzD7cKoAHwxSR8 DH5UvBFBgFIbeuX/NYU1SE7Io4vqAa4VIy0QOKeQA9/e1K2jmVFQbw5p8LxcPdOlARJ6J0boV0q1g +D3vqTyg==; Received: from cw137ip160.mn.codeweavers.com ([10.69.137.160] helo=camazotz.mn.codeweavers.com) by mail.codeweavers.com with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1s8n5c-008wIn-27; Sun, 19 May 2024 15:25:04 -0500 From: Elizabeth Figura To: Arnd Bergmann , Greg Kroah-Hartman , Jonathan Corbet , Shuah Khan Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, wine-devel@winehq.org, =?utf-8?q?Andr=C3=A9_Almeida?= , Wolfram Sang , Arkadiusz Hiler , Peter Zijlstra , Andy Lutomirski , linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Randy Dunlap , Ingo Molnar , Will Deacon , Waiman Long , Boqun Feng , Elizabeth Figura Subject: [PATCH v5 08/28] ntsync: Introduce NTSYNC_IOC_EVENT_RESET. Date: Sun, 19 May 2024 15:24:34 -0500 Message-ID: <20240519202454.1192826-9-zfigura@codeweavers.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240519202454.1192826-1-zfigura@codeweavers.com> References: <20240519202454.1192826-1-zfigura@codeweavers.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This corresponds to the NT syscall NtResetEvent(). This sets the event to the unsignaled state, and returns its previous state. Signed-off-by: Elizabeth Figura --- drivers/misc/ntsync.c | 24 ++++++++++++++++++++++++ include/uapi/linux/ntsync.h | 1 + 2 files changed, 25 insertions(+) diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c index 97d9b6047fbe..b070ceccc3af 100644 --- a/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c @@ -559,6 +559,28 @@ static int ntsync_event_set(struct ntsync_obj *event, void __user *argp) return 0; } +static int ntsync_event_reset(struct ntsync_obj *event, void __user *argp) +{ + struct ntsync_device *dev = event->dev; + __u32 prev_state; + bool all; + + if (event->type != NTSYNC_TYPE_EVENT) + return -EINVAL; + + all = ntsync_lock_obj(dev, event); + + prev_state = event->u.event.signaled; + event->u.event.signaled = false; + + ntsync_unlock_obj(dev, event, all); + + if (put_user(prev_state, (__u32 __user *)argp)) + return -EFAULT; + + return 0; +} + static int ntsync_obj_release(struct inode *inode, struct file *file) { struct ntsync_obj *obj = file->private_data; @@ -584,6 +606,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd, return ntsync_mutex_kill(obj, argp); case NTSYNC_IOC_EVENT_SET: return ntsync_event_set(obj, argp); + case NTSYNC_IOC_EVENT_RESET: + return ntsync_event_reset(obj, argp); default: return -ENOIOCTLCMD; } diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h index 36d903521bbe..7fdf79729b20 100644 --- a/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h @@ -52,5 +52,6 @@ struct ntsync_wait_args { #define NTSYNC_IOC_MUTEX_UNLOCK _IOWR('N', 0x85, struct ntsync_mutex_args) #define NTSYNC_IOC_MUTEX_KILL _IOW ('N', 0x86, __u32) #define NTSYNC_IOC_EVENT_SET _IOR ('N', 0x88, __u32) +#define NTSYNC_IOC_EVENT_RESET _IOR ('N', 0x89, __u32) #endif