From patchwork Sat Jul 24 07:20:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12397399 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8ABD9C4338F for ; Sat, 24 Jul 2021 07:27:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6819F60E93 for ; Sat, 24 Jul 2021 07:27:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234355AbhGXGqp (ORCPT ); Sat, 24 Jul 2021 02:46:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36358 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234227AbhGXGqo (ORCPT ); Sat, 24 Jul 2021 02:46:44 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B353C061575; Sat, 24 Jul 2021 00:27:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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; bh=H9uzoU2ATNZydqZDeqebhb7eMfI7+M6vHRCWP/kLgUY=; b=Nn2BHAvZ5ABLCqbio18GpLIsh4 RSVZpaBkZuRw36HRplGoyfmJnobQ1+Gq4ifeXOC44l+o8iEXYBT8g4tBkZkxsRLjs+G9UcRzZR+Dx VxT9M5UiwFxtd8G3ZG0+CBqXJKZD+YjzDwTISZNE5Zv4KrChxHdYkJ0PgVd9swAVaODpz3qCiN+hY EahSuk4Kpk7REOjWEKMjI/BKcxtFccwd7c0AgdEHTO91SJXyDHyvQHXXWoQVpOBXJRpbqD/yo+XwU 7obcnxyIfoYVJnB27gz8FqJ89GRIz5N4+Liub00PVzzp07T2k3dGkYmfHX9stx5LDcIfF7kDyp60s v/GJem3Q==; Received: from [2001:4bb8:184:87c5:85d0:a26b:ef67:d32c] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m7C1e-00C5Es-GX; Sat, 24 Jul 2021 07:24:53 +0000 From: Christoph Hellwig To: "Martin K. Petersen" , Jens Axboe , FUJITA Tomonori Cc: Doug Gilbert , =?utf-8?q?Kai_M=C3=A4kisara?= , linux-block@vger.kernel.org, linux-scsi@vger.kernel.org Subject: [PATCH 13/24] bsg: decouple from scsi_cmd_ioctl Date: Sat, 24 Jul 2021 09:20:22 +0200 Message-Id: <20210724072033.1284840-14-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210724072033.1284840-1-hch@lst.de> References: <20210724072033.1284840-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Decouple bsg from scsi_cmd_ioctl. This requires a small amount of code duplication, but will allow moving ll SCSI ioctl handling into SCSI midlayer. Signed-off-by: Christoph Hellwig --- block/bsg.c | 24 ++++++++++++++++++++++-- block/scsi_ioctl.c | 16 ---------------- 2 files changed, 22 insertions(+), 18 deletions(-) diff --git a/block/bsg.c b/block/bsg.c index 79b42c5cafeb..38dd434636d8 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -351,7 +351,10 @@ static int bsg_set_command_q(struct bsg_device *bd, int __user *uarg) static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct bsg_device *bd = file->private_data; + struct request_queue *q = bd->queue; void __user *uarg = (void __user *) arg; + int __user *intp = uarg; + int val; switch (cmd) { /* @@ -366,16 +369,33 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg) * SCSI/sg ioctls */ case SG_GET_VERSION_NUM: + return put_user(30527, intp); case SCSI_IOCTL_GET_IDLUN: + return put_user(0, intp); case SCSI_IOCTL_GET_BUS_NUMBER: + return put_user(0, intp); case SG_SET_TIMEOUT: + if (get_user(val, intp)) + return -EFAULT; + q->sg_timeout = clock_t_to_jiffies(val); + return 0; case SG_GET_TIMEOUT: + return jiffies_to_clock_t(q->sg_timeout); case SG_GET_RESERVED_SIZE: + return put_user(min(q->sg_reserved_size, queue_max_bytes(q)), + intp); case SG_SET_RESERVED_SIZE: + if (get_user(val, intp)) + return -EFAULT; + if (val < 0) + return -EINVAL; + q->sg_reserved_size = + min_t(unsigned int, val, queue_max_bytes(q)); + return 0; case SG_EMULATED_HOST: - return scsi_cmd_ioctl(bd->queue, NULL, file->f_mode, cmd, uarg); + return put_user(1, intp); case SG_IO: - return bsg_sg_io(bd->queue, file->f_mode, uarg); + return bsg_sg_io(q, file->f_mode, uarg); case SCSI_IOCTL_SEND_COMMAND: pr_warn_ratelimited("%s: calling unsupported SCSI_IOCTL_SEND_COMMAND\n", current->comm); diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index c3871529e283..b875feb8d6bd 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -43,16 +43,6 @@ static int sg_get_version(int __user *p) return put_user(sg_version_num, p); } -static int scsi_get_idlun(struct request_queue *q, int __user *p) -{ - return put_user(0, p); -} - -static int scsi_get_bus(struct request_queue *q, int __user *p) -{ - return put_user(0, p); -} - static int sg_get_timeout(struct request_queue *q) { return jiffies_to_clock_t(q->sg_timeout); @@ -769,12 +759,6 @@ int scsi_cmd_ioctl(struct request_queue *q, struct gendisk *bd_disk, fmode_t mod case SG_GET_VERSION_NUM: err = sg_get_version(arg); break; - case SCSI_IOCTL_GET_IDLUN: - err = scsi_get_idlun(q, arg); - break; - case SCSI_IOCTL_GET_BUS_NUMBER: - err = scsi_get_bus(q, arg); - break; case SG_SET_TIMEOUT: err = sg_set_timeout(q, arg); break;