From patchwork Mon Dec 9 18:58:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elizabeth Figura X-Patchwork-Id: 13900315 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 0D7F41990AE; Mon, 9 Dec 2024 19:02:48 +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=1733770970; cv=none; b=GseySMlRwxQ6Shzp6S40+kyZWncXSvVtVhE2pAY1SdECq8b6fa6Nkr7CcA/eY9cHjlXznjs89kLBrlX+OaGafEbbgXjtisHXOX+xmmewmkpIwBOkYtmcBuGh/VK8BhCOqx2w51MDyOj+2emlzlwT8YaxjAo/JTAdEaFh5Znvr1k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733770970; c=relaxed/simple; bh=4yOT8a3cRB0qPmY52n+VNg+UNalreY7d0UFkF/4P5FU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Qv7SHA1z7k7QBaEDAeZPMiXGmOCWIx+vYoD+VVscNAUO6XEr5XWgiQ3fGdlggeas2qWz6oZ/IFEpiCW32fmtc9Qx8kNHDCDuozoqStsoVo4vegLLSbaVFKcMWfWTJWeJQBggq775SK21InenwyWsjCjqWRPE0xD7+azkYiAlymQ= 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=EISCRrI1; 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="EISCRrI1" 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=oqAQ/CwNvC8HZlzmlY8JFR6LjLHJED15lmj9ttZU4/g=; b=EISCRrI1pnaRvKYeLYpcEKr1tq u+u4lq5yGdcTDf4JSJQkNH5Vulc/ullAl1Rd3UIUaVbPiL7ZGOzqVEIIbU2vNWhEJO2QmUxliG2/J JSdzJirgkkbcGBtMYETS1L/RYx1IIRQprwj8SggQCbv/4rtPlMfifu3lxYlLzrAirISpSrR+SsLFg ANdE3ph3RTV5nLUm94PTUr9T/X6+Q5sW9Q6vbDq1JsSYRsCFaJhh7i5+CYYKiT6j6jTK/R5prWc3b 51t4jju1LrG75QyeYDcJ2cPxePTK9LI2NQJzsyqmNl34GD+iYRamv6D2nHALHSm/ewXfWeNGJJlK+ 77hdUYJA==; 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 1tKiyb-001Gd5-0f; Mon, 09 Dec 2024 12:59:25 -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 v6 12/28] ntsync: Introduce NTSYNC_IOC_EVENT_READ. Date: Mon, 9 Dec 2024 12:58:48 -0600 Message-ID: <20241209185904.507350-13-zfigura@codeweavers.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241209185904.507350-1-zfigura@codeweavers.com> References: <20241209185904.507350-1-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 | 26 ++++++++++++++++++++++++++ include/uapi/linux/ntsync.h | 1 + 2 files changed, 27 insertions(+) diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c index cff2627c1efe..5a5ee7b6ee92 100644 --- a/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c @@ -633,6 +633,30 @@ 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; + + args.event = 0; + + 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; @@ -666,6 +690,8 @@ 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 eced73d08783..74abeba832f7 100644 --- a/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h @@ -56,5 +56,6 @@ 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