From patchwork Mon Dec 9 18:58:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elizabeth Figura X-Patchwork-Id: 13900328 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 99D741AAA1E; Mon, 9 Dec 2024 19:03:30 +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=1733771012; cv=none; b=CELSaWgdLtA6Y7JaUmZQiLvfg0zdXoFTWi70yQovLl+jzKRvL19dQlf1v9bYBmN2zeuyLzMrdPFyVDmODY7HIGqDZtqOmBIVWeKfN2v+nSdG9Z+sCy7cXzjR9uQg9x5EqSc/EgbDFEZTVceKr0KkgIFmf7mxknCfrc/SiX802u4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733771012; c=relaxed/simple; bh=GCclaYD7Lnuw+7ZXZ67vQpIZFd1eu5iixpNSq67pdLA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=h9gnu9EeFtuKeQzfpXuFTYeYOXSxvHtv5Q7aoDQRCasc2QJfiyXaTaTpLmkMwB8pnWHvZSz1vyuhHoIhufik7YJAcE+CZK/Ec/1vtqm94pmQFpkYdgBqid5Q5SpdCZfxmrH8zHrjwwcTHnOQVTP/kl8LbqUBtJkc7M1TsmUbaUM= 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=U2QCE+6q; 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="U2QCE+6q" 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=QpEYXS4YpYSMYz8PJzgw6Icn6C0+RwpfhQeNTELXtqw=; b=U2QCE+6qaNm3kXKcxcDCud+pDx hzyWvJEEkqtAM/XbWk3B4zZwRNzl7Jnl+moFmj+0es+cg4pTthS2b3mmI9MpUqUx0nIDfRflgPOcR vhVNXMwZDlA8If5+e4yego9K5tkfyQmArM7fdbgbFUN0juI503WjkGl+sOqa5+4XF4sX2t6RrDC3E xLGh2CCWtY7rR19TmbNMq4LBHPtJJ9vqKaaK4YUgGz0COruHAOnSZLk/ZoswkxzbWeUwFECE3eg7P ZAoOsooJ4hYnvOimO1DdGg0F+W1GfOhk0sBYk2D7b7a5++bQ6JtlAYul7xPozXJuQiGPdGyVxHQ4m iZL00DOg==; 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 1tKiyZ-001Gd5-2j; Mon, 09 Dec 2024 12:59:23 -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 07/28] ntsync: Introduce NTSYNC_IOC_EVENT_SET. Date: Mon, 9 Dec 2024 12:58:43 -0600 Message-ID: <20241209185904.507350-8-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 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 ef8949ee2d4b..e46dd795370a 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 4c0c4271c7de..36d903521bbe 100644 --- a/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h @@ -51,5 +51,6 @@ struct ntsync_wait_args { #define NTSYNC_IOC_SEM_POST _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