From patchwork Fri Dec 13 19:34:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elizabeth Figura X-Patchwork-Id: 13907750 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 5A9601EE006; 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=N4ZcEQh3UuJQsHdkEBvI7LlfgGXzoWtUWXi4IwMWRbkXmlcOvJ2fYVhBFWA/xpwxdsR9ZjZdn2ZQvTURsP699SGxNorIM6Z2QoU9BmynJs80fPpSSbw7tLS6QKvlKoZkFPsD3ojhJbdF4wm17ROExl4Vtucsz+03p0EumXB//2M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734118547; c=relaxed/simple; bh=RYX3Po7yWCS5lt87JG5RtoRjbFNnkxlvednqYIOrK/Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TnT84l6mJjf8aak6XAhEvC/VYt6YFgFa6D6gtM5Yzz91UQVAqkTEs1Fwj8HZnENAyW+uSFwwbknNZ24fGGyYjeMB9jx97MOT1DxtYdQ9db751km6SiB8jqOdVquTEpudS8lljlJWbopoWoXbHoDEp1hTKF3xygqTX7aBqb3lIjk= 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=TBB6bFDJ; 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="TBB6bFDJ" 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=F0aBqL/cc+YfmPOy3JcBmtD6MHykwCexvr9s2/7Q0+U=; b=TBB6bFDJnmLt445r+1LF6gXVVK og8QeDCRG3VxwN1rV9DsKc3VZUT7p82KfdQPrk7rB1oIQWJi5GwkQAYTLpR2Y8gg1H9EfupCYM/Xn 5CcOaU0gKs3hbEeotpjZ13j8ck+3PPt+ZxGdlp/NPfyLBxndfSTrcCiDFIj7p3/zfdp8emNcCFZx6 Tlc+cvL8cX2qVqjJVacm+XbRTq6lKHT8HV6PK/t3DCQNAx6BqiCndsmYK2nudTKAD/qrCb8xTlUer Q7ffCaKejSyZf8laZJ766J/0SliNgys+iKPVU6Q3Dj/+CBDW3pio0dgA3kgZH0rx82Ie9YobqEkip 9aUChn7Q==; 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 1tMBRt-00ASsZ-22; Fri, 13 Dec 2024 13:35:42 -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_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 v7 09/30] ntsync: Introduce NTSYNC_IOC_EVENT_SET. Date: Fri, 13 Dec 2024 13:34:50 -0600 Message-ID: <20241213193511.457338-10-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-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This corresponds to the NT syscall NtSetEvent(). This sets the event to the signaled state, and returns its previous state. Signed-off-by: Elizabeth Figura --- drivers/misc/ntsync.c | 27 +++++++++++++++++++++++++++ include/uapi/linux/ntsync.h | 1 + 2 files changed, 28 insertions(+) diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c index 3e8827b6f480..0a87f8ad5993 100644 --- a/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c @@ -534,6 +534,31 @@ static int ntsync_mutex_kill(struct ntsync_obj *mutex, void __user *argp) return ret; } +static int ntsync_event_set(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 = true; + if (all) + try_wake_all_obj(dev, event); + try_wake_any_event(event); + + 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; @@ -557,6 +582,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd, return ntsync_mutex_unlock(obj, argp); case NTSYNC_IOC_MUTEX_KILL: return ntsync_mutex_kill(obj, argp); + case NTSYNC_IOC_EVENT_SET: + return ntsync_event_set(obj, argp); default: return -ENOIOCTLCMD; } diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h index e08aa02f4dcc..db2512f6e3f4 100644 --- a/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h @@ -48,5 +48,6 @@ struct ntsync_wait_args { #define NTSYNC_IOC_SEM_RELEASE _IOWR('N', 0x81, __u32) #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) #endif