From nobody Sat Dec 28 19:21:56 2024 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 B9D871EE00E; Fri, 13 Dec 2024 19:35:45 +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=1734118547; cv=none; b=dLAPhFavUvTaDa2EN3zoHyC494MGyYKK98dh4NqBsFBHpp7pweN63y/bOPesi4SQd8n5IFx4Q7P/XUZvnDxSmcJovdMc70rQhfrC0qKuYv6mqg0i7vrlkXNUB6aavE6oJMVxvSYkp773wNvdVZHsMlSNMg0d/l2ekqo4+wa59Zg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734118547; c=relaxed/simple; bh=5zAl+119v+ocJZK0oefRFuiAvUFoAOiNTy7Byyw4tjE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tD5ijP2KbPWSKWaRjnUdHVS7RrLDREOKjSAjrf1pZyxrF9O2ghSriKJwxhkFda6drI+ljnb/hGibsGp0n0D1/2adf4Qc/t/KFL3KYcdAUblzE1yjnh6gzWd0+ihFZnFhpKoOSY3OMj2+nyibZpcCswZjSIim7zVotLjj7cWVAGg= 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=ii3d7HTP; 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="ii3d7HTP" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=codeweavers.com; s=s1; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=s6QrxGjaZOzqDHVFda/5pa27FRGmMNWB2cmTCVv/NVA=; b=ii3d7HTPPbFQwYzUJZQBKvYsy5 ppWsPOJBoJZewGCSf+8t5nyTa4CzsT0MjCv83P5BAOxEN8xaaKtil/DmMvZz9vUAvBWbUSLrqj2MH C8pj/JjBBGsoFTPawk5+Bd6YN2i2y6fgAlw0svvLz+3kQtuRHmzB8/5krn+sFyri6LRBDSjQBCtcC gXpsZsivatFZRyulOB5mDXev083wUyTKGiUpOqaYgn6XGQSX/Q4qxVj4n3n1yaPJ9gaJNjQoxwRUY Rg7jHLA3g8Q0UpI0ZME3kyEbXJRqR66fQHYlcMZYY+L3adqLfO//9ptbNreZhoTw9QXPDLuHT110f lvsgD4cw==; 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 1tMBRu-00ASsZ-2z; Fri, 13 Dec 2024 13:35:43 -0600 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=20Almeida?= , 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 v7 10/30] ntsync: Introduce NTSYNC_IOC_EVENT_RESET. Date: Fri, 13 Dec 2024 13:34:51 -0600 Message-ID: <20241213193511.457338-11-zfigura@codeweavers.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241213193511.457338-1-zfigura@codeweavers.com> References: <20241213193511.457338-1-zfigura@codeweavers.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 0a87f8ad5993..b31443aa9692 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; } =20 +static int ntsync_event_reset(struct ntsync_obj *event, void __user *argp) +{ + struct ntsync_device *dev =3D event->dev; + __u32 prev_state; + bool all; + + if (event->type !=3D NTSYNC_TYPE_EVENT) + return -EINVAL; + + all =3D ntsync_lock_obj(dev, event); + + prev_state =3D event->u.event.signaled; + event->u.event.signaled =3D 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 =3D file->private_data; @@ -584,6 +606,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigne= d 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 db2512f6e3f4..d74c4e4f93d8 100644 --- a/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h @@ -49,5 +49,6 @@ 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) =20 #endif --=20 2.45.2