From patchwork Fri Mar 29 00:06:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elizabeth Figura X-Patchwork-Id: 784682 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 A9A321E885; Fri, 29 Mar 2024 00:23:39 +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=1711671821; cv=none; b=Lq0AseuYQ6N9PZp3TGeC5fshz/PQMekG0Rr2+GFOTJc5TIhGeKVHmy8557Ar+amJtrtYUVzyzaK2SEzZ1GciaP1jy0CAF45aJc/B9SMhygv9+LIQ/92NfdkPIxkC1v4qJL92gtys9uScut4ZCWYbzQifVBYnznW6I4cQlO3qqUE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711671821; c=relaxed/simple; bh=CXhiKahb0eDgSiGeD4X7ssoSM82vjMLS/jKkCaqodDQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Xh00rTVLnby4ubgZJqGgZiNMZckKfbAX5QrrcaZdP3470zUY6BIBKmlY7dWJ62M4DDJkfqfrHhitMsNWbkOOU/weGXDBW/1aTvXp7O7Is9T7Jt739k9BZ3/OFhNIwZInXGmanzduoeW+OspjcHFzzxo/iwDRiPu/FYrCMG5yGns= 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=ZfhQRNvN; 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="ZfhQRNvN" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=codeweavers.com; s=s1; h=Message-ID:Date:Subject:Cc:To:From:Sender; bh=7IUzCTQo6Yc6I84GM6d0m/2enQYUr8L54oRJIiZTpag=; b=ZfhQRNvN/GPu2A+nUrbWUpu20u 9Dw/DXMB+ySwDqT4QTO5GIdNUiTX0g+CQXZ3xVf3v9BBg5CWdcZ3ydziYZjFL7jtQBmlM2ntU4tbK 4q4KaLx/mvRHhMS2Y9WqSIZifQfsTOQnQR4BFj7k/JEbDF3twCSJ4ESz8EUia42lCpH+blXnI8q8L auJ9kL1VkTXeipDT3yXMC/bGTLwKilW06NDX+RiYUAawvH192NR357tVIBpPP7BONCPlAEw9LDWih xuVKPHf84HjT8sjMxT19suNx8fDJ0S3te0oHXFobT4FF6kyv2z8lviKRlqUmIYMoVoa9qSYN2uX2f D9ZIXaKA==; 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 1rpzlN-000iik-2V; Thu, 28 Mar 2024 19:06:29 -0500 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 , Elizabeth Figura Subject: [PATCH v3 11/30] ntsync: Introduce NTSYNC_IOC_EVENT_RESET. Date: Thu, 28 Mar 2024 19:06:02 -0500 Message-ID: <20240329000621.148791-12-zfigura@codeweavers.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240329000621.148791-1-zfigura@codeweavers.com> References: <20240329000621.148791-1-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 | 22 ++++++++++++++++++++++ include/uapi/linux/ntsync.h | 1 + 2 files changed, 23 insertions(+) diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c index 69f359241cf6..ae78425c87d1 100644 --- a/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c @@ -508,6 +508,26 @@ 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) +{ + __u32 prev_state; + + if (event->type != NTSYNC_TYPE_EVENT) + return -EINVAL; + + spin_lock(&event->lock); + + prev_state = event->u.event.signaled; + event->u.event.signaled = false; + + spin_unlock(&event->lock); + + 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; @@ -533,6 +553,8 @@ 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 65329d15a472..657542107328 100644 --- a/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h @@ -53,5 +53,6 @@ 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