From patchwork Thu Aug 13 11:50:08 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 7008101 Return-Path: X-Original-To: patchwork-linux-scsi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 08F239F344 for ; Thu, 13 Aug 2015 11:50:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 326192069D for ; Thu, 13 Aug 2015 11:50:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 024242061E for ; Thu, 13 Aug 2015 11:50:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751900AbbHMLuS (ORCPT ); Thu, 13 Aug 2015 07:50:18 -0400 Received: from mx2.suse.de ([195.135.220.15]:53409 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751692AbbHMLuR (ORCPT ); Thu, 13 Aug 2015 07:50:17 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id F1BEA75012; Thu, 13 Aug 2015 11:50:15 +0000 (UTC) From: Johannes Thumshirn To: "James E.J. Bottomley" Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Johannes Thumshirn Subject: [PATCH] scsi: Export SCSI Inquiry data to sysfs Date: Thu, 13 Aug 2015 13:50:08 +0200 Message-Id: <1439466608-31577-1-git-send-email-jthumshirn@suse.de> X-Mailer: git-send-email 2.5.0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Export the RAW SCSI Inquiry to sysfs as binfile. This way the data can be used by userlang without the need to have and ioctl or use the sg_inq tool. Here is an example of the provided data linux:~ # hexdump /sys/class/scsi_device/1\:0\:0\:0/device/inquiry 0000000 8005 3205 001f 0000 4551 554d 2020 2020 0000010 4551 554d 4420 4456 522d 4d4f 2020 2020 0000020 2e32 2e33 0000024 Signed-off-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke --- drivers/scsi/scsi_sysfs.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 9ad4116..5ecb65d 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -773,6 +773,29 @@ static struct bin_attribute dev_attr_vpd_##_page = { \ sdev_vpd_pg_attr(pg83); sdev_vpd_pg_attr(pg80); +static ssize_t show_inquiry(struct file *filep, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct scsi_device *sdev = to_scsi_device(dev); + + if (!sdev->inquiry) + return -EINVAL; + + return memory_read_from_buffer(buf, count, &off, sdev->inquiry, + sdev->inquiry_len); +} + +static struct bin_attribute dev_attr_inquiry = { + .attr = { + .name = "inquiry", + .mode = S_IRUGO, + }, + .size = 0, + .read = show_inquiry, +}; + static ssize_t show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf) @@ -957,6 +980,7 @@ static struct attribute *scsi_sdev_attrs[] = { static struct bin_attribute *scsi_sdev_bin_attrs[] = { &dev_attr_vpd_pg83, &dev_attr_vpd_pg80, + &dev_attr_inquiry, NULL }; static struct attribute_group scsi_sdev_attr_group = {