From patchwork Mon Dec 9 18:58:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elizabeth Figura X-Patchwork-Id: 849509 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 C45E219CC11; Mon, 9 Dec 2024 19:03:02 +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=1733770984; cv=none; b=AkyCZO/KK5ebCvrOPMqaa0iTX6DtDOup+JK35paz+sMRbKtC4ivQLugskysCTIIovy4USOSpaZwHrc2YCgPFJwqrUWzTLzbtxFC4AFMKUoAZ/fcNLRLM1Dh3hPNYsswDr33yr+tMZxAWqMt14yN7nbaKpPvcysmCLJXT1im6XZo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733770984; c=relaxed/simple; bh=vxXfnHos8ZGQdxrvftHEImXmIlo+QOSkWE3JMqlp5kY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QzZWWlvTJdFncnOp40bPWmbZN6i4j69KabeXYBDwn0h7JmTM3U7vExFZMEtCsIaj9C+QtGgLAR99+NhAiGs2g2yByNyzQ3fO4dXj3UqtwKw3ifYvzUHzrSyiry7r/R+ik3qbQ6VjDHtha6gA2UwUbzHUVY6WPI9BX2hXNbBx/DM= 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=XWibcmPP; 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="XWibcmPP" 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=Ra2mZC+0tmcZOlBPX+RrAk3bBDA6gL8zBbxIVdBXqB8=; b=XWibcmPPRA3ss9kwWnB6EWUs0v Mku8Aw270qjphG2Nl2bCDZZ/wiXTuKs4v6fy1eHW7HffcogtXAcvOWixo2JvmUGCXvdg9c9MawPuw SE1TQSbIo8YnCAQIth3xcYI/S191klAIOOMst+9CxlpEtstXbkM5kbYHgRErMFxx2RHp/95skQ1Ca +15Vd74ziw/UJ/JVfv2zbU3vQ74I8JnOV3D4K5WQqTP2evPF2WNkHlVy9m7IzPOEFRGFNpxA9W0Rk FY+FfWdBhmUzsYi5jAe8nhFzlffdSsckFxehx4NawyLWrQQqH9BDFIgGXDIBGRfz+6oOLzq2fv18y 7iJiApyQ==; 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 1tKiya-001Gd5-13; Mon, 09 Dec 2024 12:59:24 -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 08/28] ntsync: Introduce NTSYNC_IOC_EVENT_RESET. Date: Mon, 9 Dec 2024 12:58:44 -0600 Message-ID: <20241209185904.507350-9-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 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 e46dd795370a..092133699193 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