From patchwork Fri Dec 13 19:34:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elizabeth Figura X-Patchwork-Id: 850604 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 B23201F4260; Fri, 13 Dec 2024 19:35:49 +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=1734118551; cv=none; b=tfv5vQ0Q84byhsaon0G0PEWsxrZJdWrYx5AlI95VEPNRBDJq0mf9i30+O1GakzBqzZysCj8BNelNnKy6FtGjDs/Av06NqIu0Nn0R7i2mKTYJyZyTCsM8Sm+MkjR7C8z1svX+c6VFYmIhzAC/MC5CjQx8yBsy/UgtwJBudxlDlaI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734118551; c=relaxed/simple; bh=5u67zKVa5RU7MQlgLiJDfF2It3YHbhWWFlwjw/F2oBM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eKt+HDhuuDDj+ZsQkOH5D6Zk+24CKnkkFrozpQKq+6Rpfl25i0FtcwUun+Fl2W9mfNE/Pp8XRs7xEgWePne/CW4sjaLO7umaSK35QejsfvHPNn2jgiKg/m4eNh83742v1BRHs6oxGF+0d8VLzS7tx7B0hbjrJ69F2bWt6FMn0Pg= 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=nAeehgDO; 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="nAeehgDO" 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=GjqmdWYcY3chHGsxf2lTHkmxX9CvoUQ42FGe/WL091E=; b=nAeehgDOaumNetvmXiJsSK+3qp Q+ToS2FRd5DAPMe2fn+UoTiF60W/7HtoYFnuZN9hpJ9q2Ot3g2Clh8RtECtfBI11Wf4kjpZDoX0mF Zvr57Dv+M/RhbnnZFiFikH33pOI2+Aav2w395zLfROAhG+nkSmuWp42fePquwP8DH2kmBLUSQFvci xYKwlJLUXoMZbex/CGxx1CNVPIyjUmFFTxtCr9di+JnMIuB0QV/PBOaZShkh60YJhQHDKd82u3hpy avv/Q7nLrmyw189rLVxjB9Yat4TGQfpG/jeNTJ8fD67hr+9upPWT9u2EsJQEYtu6/zmQhyOri9tjY D9OrTl0Q==; 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 1tMBRx-00ASsZ-1w; Fri, 13 Dec 2024 13:35:45 -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 14/30] ntsync: Introduce NTSYNC_IOC_EVENT_READ. Date: Fri, 13 Dec 2024 13:34:55 -0600 Message-ID: <20241213193511.457338-15-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 NtQueryEvent(). This returns the signaled state of the event and whether it is manual-reset. 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 0047b13b6ebd..78dc405bb759 100644 --- a/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c @@ -629,6 +629,28 @@ static int ntsync_mutex_read(struct ntsync_obj *mutex, void __user *argp) return ret; } +static int ntsync_event_read(struct ntsync_obj *event, void __user *argp) +{ + struct ntsync_event_args __user *user_args = argp; + struct ntsync_device *dev = event->dev; + struct ntsync_event_args args; + bool all; + + if (event->type != NTSYNC_TYPE_EVENT) + return -EINVAL; + + all = ntsync_lock_obj(dev, event); + + args.manual = event->u.event.manual; + args.signaled = event->u.event.signaled; + + ntsync_unlock_obj(dev, event, all); + + if (copy_to_user(user_args, &args, sizeof(args))) + return -EFAULT; + return 0; +} + static int ntsync_obj_release(struct inode *inode, struct file *file) { struct ntsync_obj *obj = file->private_data; @@ -662,6 +684,8 @@ static long ntsync_obj_ioctl(struct file *file, unsigned int cmd, return ntsync_event_reset(obj, argp); case NTSYNC_IOC_EVENT_PULSE: return ntsync_event_set(obj, argp, true); + case NTSYNC_IOC_EVENT_READ: + return ntsync_event_read(obj, argp); default: return -ENOIOCTLCMD; } diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h index 207646e63ef3..b9d208a8c00f 100644 --- a/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h @@ -53,5 +53,6 @@ struct ntsync_wait_args { #define NTSYNC_IOC_EVENT_PULSE _IOR ('N', 0x8a, __u32) #define NTSYNC_IOC_SEM_READ _IOR ('N', 0x8b, struct ntsync_sem_args) #define NTSYNC_IOC_MUTEX_READ _IOR ('N', 0x8c, struct ntsync_mutex_args) +#define NTSYNC_IOC_EVENT_READ _IOR ('N', 0x8d, struct ntsync_event_args) #endif