From patchwork Fri Nov 9 22:14:23 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 10676635 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 37CA1139B for ; Fri, 9 Nov 2018 22:14:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 281122F1A5 for ; Fri, 9 Nov 2018 22:14:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1C1FF2F317; Fri, 9 Nov 2018 22:14:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id BDD362F1A5 for ; Fri, 9 Nov 2018 22:14:25 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id B47DF2118EF66; Fri, 9 Nov 2018 14:14:25 -0800 (PST) X-Original-To: linux-nvdimm@lists.01.org Delivered-To: linux-nvdimm@lists.01.org Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=192.55.52.93; helo=mga11.intel.com; envelope-from=dave.jiang@intel.com; receiver=linux-nvdimm@lists.01.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 58F5E21184E66 for ; Fri, 9 Nov 2018 14:14:24 -0800 (PST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Nov 2018 14:14:24 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,484,1534834800"; d="scan'208";a="278596818" Received: from djiang5-desk3.ch.intel.com ([143.182.136.93]) by fmsmga005.fm.intel.com with ESMTP; 09 Nov 2018 14:14:23 -0800 Subject: [PATCH 07/11] libnvdimm/security: add overwrite status notification From: Dave Jiang To: dan.j.williams@intel.com, zohar@linux.vnet.ibm.com Date: Fri, 09 Nov 2018 15:14:23 -0700 Message-ID: <154180166375.70506.1085533195452285285.stgit@djiang5-desk3.ch.intel.com> In-Reply-To: <154180093865.70506.6858789591063128903.stgit@djiang5-desk3.ch.intel.com> References: <154180093865.70506.6858789591063128903.stgit@djiang5-desk3.ch.intel.com> User-Agent: StGit/unknown-version MIME-Version: 1.0 X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Linux-nvdimm developer list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-nvdimm@lists.01.org Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" X-Virus-Scanned: ClamAV using ClamSMTP Adding sysfs notification for when overwrite has completed to allow user monitoring app to be aware of overwrite completion status. Signed-off-by: Dave Jiang --- drivers/acpi/nfit/core.c | 5 +++++ drivers/nvdimm/dimm_devs.c | 10 ++++++++++ drivers/nvdimm/nd-core.h | 1 + drivers/nvdimm/security.c | 2 ++ include/linux/libnvdimm.h | 1 + 5 files changed, 19 insertions(+) diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index de4e00059277..3e6c7b653872 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -2033,6 +2033,11 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc) if (!nvdimm) continue; + rc = nvdimm_setup_security_events(nvdimm); + if (rc < 0) + dev_warn(acpi_desc->dev, + "no security event setup failed\n"); + nfit_kernfs = sysfs_get_dirent(nvdimm_kobj(nvdimm)->sd, "nfit"); if (nfit_kernfs) nfit_mem->flags_attr = sysfs_get_dirent(nfit_kernfs, diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c index b613c131bfb9..39e40074b5df 100644 --- a/drivers/nvdimm/dimm_devs.c +++ b/drivers/nvdimm/dimm_devs.c @@ -508,6 +508,16 @@ struct nvdimm *__nvdimm_create(struct nvdimm_bus *nvdimm_bus, void *provider_dat } EXPORT_SYMBOL_GPL(__nvdimm_create); +int nvdimm_setup_security_events(struct nvdimm *nvdimm) +{ + nvdimm->overwrite_state = sysfs_get_dirent(nvdimm->dev.kobj.sd, + "security"); + if (!nvdimm->overwrite_state) + return -ENODEV; + return 0; +} +EXPORT_SYMBOL_GPL(nvdimm_setup_security_events); + int alias_dpa_busy(struct device *dev, void *data) { resource_size_t map_end, blk_start, new; diff --git a/drivers/nvdimm/nd-core.h b/drivers/nvdimm/nd-core.h index 20a8216c503d..b96e1b10e3eb 100644 --- a/drivers/nvdimm/nd-core.h +++ b/drivers/nvdimm/nd-core.h @@ -49,6 +49,7 @@ struct nvdimm { struct mutex sec_mutex; struct delayed_work dwork; unsigned int overwrite_tmo; + struct kernfs_node *overwrite_state; }; /** diff --git a/drivers/nvdimm/security.c b/drivers/nvdimm/security.c index 725acd211114..f5ba633545b7 100644 --- a/drivers/nvdimm/security.c +++ b/drivers/nvdimm/security.c @@ -122,6 +122,8 @@ void nvdimm_overwrite_query(struct work_struct *work) else dev_info(&nvdimm->dev, "Overwrite completed\n"); + if (nvdimm->overwrite_state) + sysfs_notify_dirent(nvdimm->overwrite_state); nvdimm->overwrite_tmo = 0; nvdimm_clear_security_busy(nvdimm); nvdimm_security_get_state(nvdimm); diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h index 479421ce62c0..c3c5a1c6b1b7 100644 --- a/include/linux/libnvdimm.h +++ b/include/linux/libnvdimm.h @@ -227,6 +227,7 @@ static inline struct nvdimm *nvdimm_create(struct nvdimm_bus *nvdimm_bus, cmd_mask, num_flush, flush_wpq, NULL, NULL); } +int nvdimm_setup_security_events(struct nvdimm *nvdimm); const struct nd_cmd_desc *nd_cmd_dimm_desc(int cmd); const struct nd_cmd_desc *nd_cmd_bus_desc(int cmd); u32 nd_cmd_in_size(struct nvdimm *nvdimm, int cmd,