From patchwork Tue Apr 16 01:08:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elizabeth Figura X-Patchwork-Id: 13630963 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 B165D4C98; Tue, 16 Apr 2024 01:10:28 +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=1713229830; cv=none; b=sjJBZ7AGmxURuci1CjRrqIupLaUPiF34u9Mo9xJ8pQj92vwxp84sRSByZD13DJQd9iUApZzgrKWHYX26hsbofunCRoq/FuH0KeZeOcyZuhMdTlEum5XWhdAJwYsUCiCVOcemM/JKXTfcNy9GumVPDjPuJ6F2Ec/PXwkXSggtWSw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713229830; c=relaxed/simple; bh=kZr4HBZT8xR7smvBRwRPi+gHQeVpDhR6SAAtaJhyuDo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Mgrn4iD2zKp+LxCbQFXUE5YPtjJEdt3oKOV1vUYhM9q+JW8HvZGSoQWV0h7j0QsJC6L6UH4WULqVHY8fw0qcplw8/i8ouLG+0ZyFVyxJKswvMnDgFNS7DMUZq2Tfd1bcz1mmdsMPG4yLg/MuYNBGAQS6hk+cZnDuiFi8t8Mx+18= 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=ebhd41BF; 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="ebhd41BF" 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=Dqvt4R2zo6YXU5BiQKahqTvL9Mp5x1vDJQ1/oaltxP8=; b=ebhd41BFE4X+6ld3nf3OmRqxsd GKn23Y+w2ftPJf6d4VZo3UCaSBYIko3ahRpKVitTkxazQSoehdY8aojXEW3Jj79OTovc51y7AUcsF fzZMrhz5RycfN6sJ0pVyjuidk0XhTfwL9c0KrzpF4nGKOAvqNqsl2cDeiU9w1Ima8j7tXVVtBQ9Hz V66q1FPhm/HEoZAcKL1yjcMRipTC8+/62ZgGxvyEwKxLVEZZ3lQzBzAWJEBBJt5G/X/xVEd6fqIjF PfPWTX/NXkXEQc3+LJ3KreksvkFwmNgremiKt0bG7ZRpZeSIyJfOjGRkLtALsM7fYI3sLbgO0NW8D NWw66RXQ==; 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 1rwXL0-00FbQv-2k; Mon, 15 Apr 2024 20:10:18 -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 , Ingo Molnar , Will Deacon , Waiman Long , Boqun Feng , Elizabeth Figura Subject: [PATCH v4 12/27] ntsync: Introduce NTSYNC_IOC_EVENT_READ. Date: Mon, 15 Apr 2024 20:08:22 -0500 Message-ID: <20240416010837.333694-13-zfigura@codeweavers.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240416010837.333694-1-zfigura@codeweavers.com> References: <20240416010837.333694-1-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 | 21 +++++++++++++++++++++ include/uapi/linux/ntsync.h | 1 + 2 files changed, 22 insertions(+) diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c index bd043dccc9fa..a03c6fceb518 100644 --- a/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c @@ -572,6 +572,25 @@ 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_event_args args; + + if (event->type != NTSYNC_TYPE_EVENT) + return -EINVAL; + + args.event = 0; + spin_lock(&event->lock); + args.manual = event->u.event.manual; + args.signaled = event->u.event.signaled; + spin_unlock(&event->lock); + + 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; @@ -605,6 +624,8 @@ 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 797e8df10a3a..80f36de46a75 100644 --- a/include/uapi/linux/ntsync.h +++ b/include/uapi/linux/ntsync.h @@ -57,5 +57,6 @@ 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