From patchwork Wed Dec 5 12:18:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Disseldorp X-Patchwork-Id: 10713963 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 4D37B17D5 for ; Wed, 5 Dec 2018 12:18:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3A7F62C13E for ; Wed, 5 Dec 2018 12:18:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2E30E2C2B3; Wed, 5 Dec 2018 12:18:54 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C64142C2C0 for ; Wed, 5 Dec 2018 12:18:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727823AbeLEMSw (ORCPT ); Wed, 5 Dec 2018 07:18:52 -0500 Received: from mx2.suse.de ([195.135.220.15]:46220 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727242AbeLEMSs (ORCPT ); Wed, 5 Dec 2018 07:18:48 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id ADDA6B7C0; Wed, 5 Dec 2018 12:18:46 +0000 (UTC) From: David Disseldorp To: target-devel@vger.kernel.org Cc: bvanassche@acm.org, lduncan@suse.com, hare@suse.com, bly@catalogicsoftware.com, r.bolshakov@yadro.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, David Disseldorp Subject: [PATCH v7 1/5] target: use consistent left-aligned ASCII INQUIRY data Date: Wed, 5 Dec 2018 13:18:34 +0100 Message-Id: <20181205121838.23982-2-ddiss@suse.de> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20181205121838.23982-1-ddiss@suse.de> References: <20181205121838.23982-1-ddiss@suse.de> Sender: target-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP spc5r17.pdf specifies: 4.3.1 ASCII data field requirements ASCII data fields shall contain only ASCII printable characters (i.e., code values 20h to 7Eh) and may be terminated with one or more ASCII null (00h) characters. ASCII data fields described as being left-aligned shall have any unused bytes at the end of the field (i.e., highest offset) and the unused bytes shall be filled with ASCII space characters (20h). LIO currently space-pads the T10 VENDOR IDENTIFICATION and PRODUCT IDENTIFICATION fields in the standard INQUIRY data. However, the PRODUCT REVISION LEVEL field in the standard INQUIRY data as well as the T10 VENDOR IDENTIFICATION field in the INQUIRY Device Identification VPD Page are zero-terminated/zero-padded. Fix this inconsistency by using space-padding for all of the above fields. Signed-off-by: David Disseldorp Reviewed-by: Christoph Hellwig Reviewed-by: Bryant G. Ly Reviewed-by: Lee Duncan Reviewed-by: Hannes Reinecke Reviewed-by: Roman Bolshakov --- drivers/target/target_core_spc.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index f459118bc11b..c37dd36ec77d 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -108,12 +108,17 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) buf[7] = 0x2; /* CmdQue=1 */ - memcpy(&buf[8], "LIO-ORG ", 8); - memset(&buf[16], 0x20, 16); + /* + * ASCII data fields described as being left-aligned shall have any + * unused bytes at the end of the field (i.e., highest offset) and the + * unused bytes shall be filled with ASCII space characters (20h). + */ + memset(&buf[8], 0x20, 8 + 16 + 4); + memcpy(&buf[8], "LIO-ORG", sizeof("LIO-ORG") - 1); memcpy(&buf[16], dev->t10_wwn.model, - min_t(size_t, strlen(dev->t10_wwn.model), 16)); + strnlen(dev->t10_wwn.model, 16)); memcpy(&buf[32], dev->t10_wwn.revision, - min_t(size_t, strlen(dev->t10_wwn.revision), 4)); + strnlen(dev->t10_wwn.revision, 4)); buf[4] = 31; /* Set additional length to 31 */ return 0; @@ -251,7 +256,9 @@ spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) buf[off] = 0x2; /* ASCII */ buf[off+1] = 0x1; /* T10 Vendor ID */ buf[off+2] = 0x0; - memcpy(&buf[off+4], "LIO-ORG", 8); + /* left align Vendor ID and pad with spaces */ + memset(&buf[off+4], 0x20, 8); + memcpy(&buf[off+4], "LIO-ORG", sizeof("LIO-ORG") - 1); /* Extra Byte for NULL Terminator */ id_len++; /* Identifier Length */ From patchwork Wed Dec 5 12:18:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Disseldorp X-Patchwork-Id: 10713947 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 2617713AF for ; Wed, 5 Dec 2018 12:18:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 12BC52C13E for ; Wed, 5 Dec 2018 12:18:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 06AAB2C2C1; Wed, 5 Dec 2018 12:18:51 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 145802C13E for ; Wed, 5 Dec 2018 12:18:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727679AbeLEMSt (ORCPT ); Wed, 5 Dec 2018 07:18:49 -0500 Received: from mx2.suse.de ([195.135.220.15]:46222 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727094AbeLEMSt (ORCPT ); Wed, 5 Dec 2018 07:18:49 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id BF95FB7C1; Wed, 5 Dec 2018 12:18:46 +0000 (UTC) From: David Disseldorp To: target-devel@vger.kernel.org Cc: bvanassche@acm.org, lduncan@suse.com, hare@suse.com, bly@catalogicsoftware.com, r.bolshakov@yadro.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, David Disseldorp Subject: [PATCH v7 2/5] target: consistently null-terminate t10_wwn strings Date: Wed, 5 Dec 2018 13:18:35 +0100 Message-Id: <20181205121838.23982-3-ddiss@suse.de> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20181205121838.23982-1-ddiss@suse.de> References: <20181205121838.23982-1-ddiss@suse.de> Sender: target-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In preparation for supporting user provided vendor strings, add an extra byte to the vendor, model and revision arrays in struct t10_wwn. This ensures that the full INQUIRY data can be carried in the arrays along with a null-terminator. Change a number of array readers and writers so that they account for explicit null-termination: - The pscsi_set_inquiry_info() and emulate_model_alias_store() codepaths don't currently explicitly null-terminate; fix this. - Existing t10_wwn field dumps use for-loops which step over null-terminators for right-padding. + Use printf with width specifiers instead. Signed-off-by: David Disseldorp Reviewed-by: Roman Bolshakov --- drivers/target/target_core_configfs.c | 16 +++++++---- drivers/target/target_core_device.c | 46 ++++++++++---------------------- drivers/target/target_core_pscsi.c | 50 +++++++++++------------------------ drivers/target/target_core_spc.c | 7 ++--- drivers/target/target_core_stat.c | 32 +++++----------------- include/target/target_core_base.h | 14 +++++++--- 6 files changed, 63 insertions(+), 102 deletions(-) diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index f6b1549f4142..8277bcf81d6e 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -613,12 +613,17 @@ static void dev_set_t10_wwn_model_alias(struct se_device *dev) const char *configname; configname = config_item_name(&dev->dev_group.cg_item); - if (strlen(configname) >= 16) { + if (strlen(configname) >= INQUIRY_MODEL_LEN) { pr_warn("dev[%p]: Backstore name '%s' is too long for " - "INQUIRY_MODEL, truncating to 16 bytes\n", dev, + "INQUIRY_MODEL, truncating to 15 characters\n", dev, configname); } - snprintf(&dev->t10_wwn.model[0], 16, "%s", configname); + /* + * XXX We can't use sizeof(dev->t10_wwn.model) (INQUIRY_MODEL_LEN + 1) + * here without potentially breaking existing setups, so continue to + * truncate one byte shorter than what can be carried in INQUIRY. + */ + strlcpy(dev->t10_wwn.model, configname, INQUIRY_MODEL_LEN); } static ssize_t emulate_model_alias_store(struct config_item *item, @@ -640,11 +645,12 @@ static ssize_t emulate_model_alias_store(struct config_item *item, if (ret < 0) return ret; + BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); if (flag) { dev_set_t10_wwn_model_alias(dev); } else { - strncpy(&dev->t10_wwn.model[0], - dev->transport->inquiry_prod, 16); + strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod, + sizeof(dev->t10_wwn.model)); } da->emulate_model_alias = flag; return count; diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 47b5ef153135..ebd787bb29a8 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -720,36 +720,17 @@ void core_dev_free_initiator_node_lun_acl( static void scsi_dump_inquiry(struct se_device *dev) { struct t10_wwn *wwn = &dev->t10_wwn; - char buf[17]; - int i, device_type; + int device_type = dev->transport->get_device_type(dev); + /* * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer */ - for (i = 0; i < 8; i++) - if (wwn->vendor[i] >= 0x20) - buf[i] = wwn->vendor[i]; - else - buf[i] = ' '; - buf[i] = '\0'; - pr_debug(" Vendor: %s\n", buf); - - for (i = 0; i < 16; i++) - if (wwn->model[i] >= 0x20) - buf[i] = wwn->model[i]; - else - buf[i] = ' '; - buf[i] = '\0'; - pr_debug(" Model: %s\n", buf); - - for (i = 0; i < 4; i++) - if (wwn->revision[i] >= 0x20) - buf[i] = wwn->revision[i]; - else - buf[i] = ' '; - buf[i] = '\0'; - pr_debug(" Revision: %s\n", buf); - - device_type = dev->transport->get_device_type(dev); + pr_debug(" Vendor: %-" __stringify(INQUIRY_VENDOR_LEN) "s\n", + wwn->vendor); + pr_debug(" Model: %-" __stringify(INQUIRY_MODEL_LEN) "s\n", + wwn->model); + pr_debug(" Revision: %-" __stringify(INQUIRY_REVISION_LEN) "s\n", + wwn->revision); pr_debug(" Type: %s ", scsi_device_type(device_type)); } @@ -1009,11 +990,12 @@ int target_configure_device(struct se_device *dev) * passthrough because this is being provided by the backend LLD. */ if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) { - strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); - strncpy(&dev->t10_wwn.model[0], - dev->transport->inquiry_prod, 16); - strncpy(&dev->t10_wwn.revision[0], - dev->transport->inquiry_rev, 4); + strlcpy(dev->t10_wwn.vendor, "LIO-ORG", + sizeof(dev->t10_wwn.vendor)); + strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod, + sizeof(dev->t10_wwn.model)); + strlcpy(dev->t10_wwn.revision, dev->transport->inquiry_rev, + sizeof(dev->t10_wwn.revision)); } scsi_dump_inquiry(dev); diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c index 47d76c862014..c346ad3ee4e0 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -179,20 +179,20 @@ static void pscsi_tape_read_blocksize(struct se_device *dev, static void pscsi_set_inquiry_info(struct scsi_device *sdev, struct t10_wwn *wwn) { - unsigned char *buf; - if (sdev->inquiry_len < INQUIRY_LEN) return; - - buf = sdev->inquiry; - if (!buf) - return; /* - * Use sdev->inquiry from drivers/scsi/scsi_scan.c:scsi_alloc_sdev() + * Use sdev->inquiry data from drivers/scsi/scsi_scan.c:scsi_add_lun() */ - memcpy(&wwn->vendor[0], &buf[8], sizeof(wwn->vendor)); - memcpy(&wwn->model[0], &buf[16], sizeof(wwn->model)); - memcpy(&wwn->revision[0], &buf[32], sizeof(wwn->revision)); + BUILD_BUG_ON(sizeof(wwn->vendor) != INQUIRY_VENDOR_LEN + 1); + snprintf(wwn->vendor, sizeof(wwn->vendor), + "%." __stringify(INQUIRY_VENDOR_LEN) "s", sdev->vendor); + BUILD_BUG_ON(sizeof(wwn->model) != INQUIRY_MODEL_LEN + 1); + snprintf(wwn->model, sizeof(wwn->model), + "%." __stringify(INQUIRY_MODEL_LEN) "s", sdev->model); + BUILD_BUG_ON(sizeof(wwn->revision) != INQUIRY_REVISION_LEN + 1); + snprintf(wwn->revision, sizeof(wwn->revision), + "%." __stringify(INQUIRY_REVISION_LEN) "s", sdev->rev); } static int @@ -811,7 +811,6 @@ static ssize_t pscsi_show_configfs_dev_params(struct se_device *dev, char *b) struct scsi_device *sd = pdv->pdv_sd; unsigned char host_id[16]; ssize_t bl; - int i; if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) snprintf(host_id, 16, "%d", pdv->pdv_host_id); @@ -824,29 +823,12 @@ static ssize_t pscsi_show_configfs_dev_params(struct se_device *dev, char *b) host_id); if (sd) { - bl += sprintf(b + bl, " "); - bl += sprintf(b + bl, "Vendor: "); - for (i = 0; i < 8; i++) { - if (ISPRINT(sd->vendor[i])) /* printable character? */ - bl += sprintf(b + bl, "%c", sd->vendor[i]); - else - bl += sprintf(b + bl, " "); - } - bl += sprintf(b + bl, " Model: "); - for (i = 0; i < 16; i++) { - if (ISPRINT(sd->model[i])) /* printable character ? */ - bl += sprintf(b + bl, "%c", sd->model[i]); - else - bl += sprintf(b + bl, " "); - } - bl += sprintf(b + bl, " Rev: "); - for (i = 0; i < 4; i++) { - if (ISPRINT(sd->rev[i])) /* printable character ? */ - bl += sprintf(b + bl, "%c", sd->rev[i]); - else - bl += sprintf(b + bl, " "); - } - bl += sprintf(b + bl, "\n"); + bl += sprintf(b + bl, " Vendor: %." + __stringify(INQUIRY_VENDOR_LEN) "s", sd->vendor); + bl += sprintf(b + bl, " Model: %." + __stringify(INQUIRY_MODEL_LEN) "s", sd->model); + bl += sprintf(b + bl, " Rev: %." + __stringify(INQUIRY_REVISION_LEN) "s\n", sd->rev); } return bl; } diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index c37dd36ec77d..8ffe712cb44d 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -113,12 +113,13 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) * unused bytes at the end of the field (i.e., highest offset) and the * unused bytes shall be filled with ASCII space characters (20h). */ - memset(&buf[8], 0x20, 8 + 16 + 4); + memset(&buf[8], 0x20, + INQUIRY_VENDOR_LEN + INQUIRY_MODEL_LEN + INQUIRY_REVISION_LEN); memcpy(&buf[8], "LIO-ORG", sizeof("LIO-ORG") - 1); memcpy(&buf[16], dev->t10_wwn.model, - strnlen(dev->t10_wwn.model, 16)); + strnlen(dev->t10_wwn.model, INQUIRY_MODEL_LEN)); memcpy(&buf[32], dev->t10_wwn.revision, - strnlen(dev->t10_wwn.revision, 4)); + strnlen(dev->t10_wwn.revision, INQUIRY_REVISION_LEN)); buf[4] = 31; /* Set additional length to 31 */ return 0; diff --git a/drivers/target/target_core_stat.c b/drivers/target/target_core_stat.c index f0db91ebd735..87fd2b11fe3b 100644 --- a/drivers/target/target_core_stat.c +++ b/drivers/target/target_core_stat.c @@ -246,43 +246,25 @@ static ssize_t target_stat_lu_lu_name_show(struct config_item *item, char *page) static ssize_t target_stat_lu_vend_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); - int i; - char str[sizeof(dev->t10_wwn.vendor)+1]; - /* scsiLuVendorId */ - for (i = 0; i < sizeof(dev->t10_wwn.vendor); i++) - str[i] = ISPRINT(dev->t10_wwn.vendor[i]) ? - dev->t10_wwn.vendor[i] : ' '; - str[i] = '\0'; - return snprintf(page, PAGE_SIZE, "%s\n", str); + return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_VENDOR_LEN) + "s\n", dev->t10_wwn.vendor); } static ssize_t target_stat_lu_prod_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); - int i; - char str[sizeof(dev->t10_wwn.model)+1]; - /* scsiLuProductId */ - for (i = 0; i < sizeof(dev->t10_wwn.model); i++) - str[i] = ISPRINT(dev->t10_wwn.model[i]) ? - dev->t10_wwn.model[i] : ' '; - str[i] = '\0'; - return snprintf(page, PAGE_SIZE, "%s\n", str); + return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_MODEL_LEN) + "s\n", dev->t10_wwn.model); } static ssize_t target_stat_lu_rev_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); - int i; - char str[sizeof(dev->t10_wwn.revision)+1]; - - /* scsiLuRevisionId */ - for (i = 0; i < sizeof(dev->t10_wwn.revision); i++) - str[i] = ISPRINT(dev->t10_wwn.revision[i]) ? - dev->t10_wwn.revision[i] : ' '; - str[i] = '\0'; - return snprintf(page, PAGE_SIZE, "%s\n", str); + + return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_REVISION_LEN) + "s\n", dev->t10_wwn.revision); } static ssize_t target_stat_lu_dev_type_show(struct config_item *item, char *page) diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index e3bdb0550a59..497853a09fee 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -46,6 +46,10 @@ /* Used by transport_get_inquiry_vpd_device_ident() */ #define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254 +#define INQUIRY_VENDOR_LEN 8 +#define INQUIRY_MODEL_LEN 16 +#define INQUIRY_REVISION_LEN 4 + /* Attempts before moving from SHORT to LONG */ #define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3 #define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */ @@ -314,9 +318,13 @@ struct t10_vpd { }; struct t10_wwn { - char vendor[8]; - char model[16]; - char revision[4]; + /* + * SCSI left aligned strings may not be null terminated. +1 to ensure a + * null terminator is always present. + */ + char vendor[INQUIRY_VENDOR_LEN + 1]; + char model[INQUIRY_MODEL_LEN + 1]; + char revision[INQUIRY_REVISION_LEN + 1]; char unit_serial[INQUIRY_VPD_SERIAL_LEN]; spinlock_t t10_vpd_lock; struct se_device *t10_dev; From patchwork Wed Dec 5 12:18:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Disseldorp X-Patchwork-Id: 10713957 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 0E2E813AF for ; Wed, 5 Dec 2018 12:18:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F29CA2C13E for ; Wed, 5 Dec 2018 12:18:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E6ADE2C2C0; Wed, 5 Dec 2018 12:18:52 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7C7462C13E for ; Wed, 5 Dec 2018 12:18:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726149AbeLEMSv (ORCPT ); Wed, 5 Dec 2018 07:18:51 -0500 Received: from mx2.suse.de ([195.135.220.15]:46214 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727182AbeLEMSt (ORCPT ); Wed, 5 Dec 2018 07:18:49 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id D6453B7C2; Wed, 5 Dec 2018 12:18:46 +0000 (UTC) From: David Disseldorp To: target-devel@vger.kernel.org Cc: bvanassche@acm.org, lduncan@suse.com, hare@suse.com, bly@catalogicsoftware.com, r.bolshakov@yadro.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, David Disseldorp Subject: [PATCH v7 3/5] target: add device vendor_id configfs attribute Date: Wed, 5 Dec 2018 13:18:36 +0100 Message-Id: <20181205121838.23982-4-ddiss@suse.de> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20181205121838.23982-1-ddiss@suse.de> References: <20181205121838.23982-1-ddiss@suse.de> Sender: target-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The vendor_id attribute will allow for the modification of the T10 Vendor Identification string returned in inquiry responses. Its value can be viewed and modified via the ConfigFS path at: target/core/$backstore/$name/wwn/vendor_id "LIO-ORG" remains the default value, which is set when the backstore device is enabled. Signed-off-by: David Disseldorp Reviewed-by: Roman Bolshakov --- drivers/target/target_core_configfs.c | 70 +++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index 8277bcf81d6e..f099c2ae451f 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -1217,6 +1217,74 @@ static struct t10_wwn *to_t10_wwn(struct config_item *item) } /* + * STANDARD and VPD page 0x80 T10 Vendor Identification + */ +static ssize_t target_wwn_vendor_id_show(struct config_item *item, + char *page) +{ + return sprintf(page, "%s\n", &to_t10_wwn(item)->vendor[0]); +} + +static ssize_t target_wwn_vendor_id_store(struct config_item *item, + const char *page, size_t count) +{ + struct t10_wwn *t10_wwn = to_t10_wwn(item); + struct se_device *dev = t10_wwn->t10_dev; + /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ + unsigned char buf[INQUIRY_VENDOR_LEN + 2]; + char *stripped = NULL; + size_t len; + int i; + + len = strlcpy(buf, page, sizeof(buf)); + if (len < sizeof(buf)) { + /* Strip any newline added from userspace. */ + stripped = strstrip(buf); + len = strlen(stripped); + } + if (len > INQUIRY_VENDOR_LEN) { + pr_err("Emulated T10 Vendor Identification exceeds" + " INQUIRY_VENDOR_LEN: " __stringify(INQUIRY_VENDOR_LEN) + "\n"); + return -EOVERFLOW; + } + + /* + * SPC 4.3.1: + * ASCII data fields shall contain only ASCII printable characters (i.e., + * code values 20h to 7Eh) and may be terminated with one or more ASCII + * null (00h) characters. + */ + for (i = 0; i < len; i++) { + if ((stripped[i] < 0x20) || (stripped[i] > 0x7E)) { + pr_err("Emulated T10 Vendor Identification contains" + " non-ASCII-printable characters\n"); + return -EINVAL; + } + } + + /* + * Check to see if any active exports exist. If they do exist, fail + * here as changing this information on the fly (underneath the + * initiator side OS dependent multipath code) could cause negative + * effects. + */ + if (dev->export_count) { + pr_err("Unable to set T10 Vendor Identification while" + " active %d exports exist\n", dev->export_count); + return -EINVAL; + } + + BUILD_BUG_ON(sizeof(dev->t10_wwn.vendor) != INQUIRY_VENDOR_LEN + 1); + strlcpy(dev->t10_wwn.vendor, stripped, sizeof(dev->t10_wwn.vendor)); + + pr_debug("Target_Core_ConfigFS: Set emulated T10 Vendor Identification:" + " %s\n", dev->t10_wwn.vendor); + + return count; +} + +/* * VPD page 0x80 Unit serial */ static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item, @@ -1362,6 +1430,7 @@ DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); /* VPD page 0x83 Association: SCSI Target Device */ DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); +CONFIGFS_ATTR(target_wwn_, vendor_id); CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); @@ -1369,6 +1438,7 @@ CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port); CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device); static struct configfs_attribute *target_core_dev_wwn_attrs[] = { + &target_wwn_attr_vendor_id, &target_wwn_attr_vpd_unit_serial, &target_wwn_attr_vpd_protocol_identifier, &target_wwn_attr_vpd_assoc_logical_unit, From patchwork Wed Dec 5 12:18:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Disseldorp X-Patchwork-Id: 10713941 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 1D99813AF for ; Wed, 5 Dec 2018 12:18:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 023BF2C109 for ; Wed, 5 Dec 2018 12:18:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E79562C10F; Wed, 5 Dec 2018 12:18:49 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 80BEC2C102 for ; Wed, 5 Dec 2018 12:18:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727515AbeLEMSs (ORCPT ); Wed, 5 Dec 2018 07:18:48 -0500 Received: from mx2.suse.de ([195.135.220.15]:46218 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727084AbeLEMSs (ORCPT ); Wed, 5 Dec 2018 07:18:48 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id E7338B7C3; Wed, 5 Dec 2018 12:18:46 +0000 (UTC) From: David Disseldorp To: target-devel@vger.kernel.org Cc: bvanassche@acm.org, lduncan@suse.com, hare@suse.com, bly@catalogicsoftware.com, r.bolshakov@yadro.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, David Disseldorp Subject: [PATCH v7 4/5] target: remove hardcoded T10 Vendor ID in INQUIRY response Date: Wed, 5 Dec 2018 13:18:37 +0100 Message-Id: <20181205121838.23982-5-ddiss@suse.de> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20181205121838.23982-1-ddiss@suse.de> References: <20181205121838.23982-1-ddiss@suse.de> Sender: target-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Use the value stored in t10_wwn.vendor, which defaults to "LIO-ORG", but can be reconfigured via the vendor_id ConfigFS attribute. Signed-off-by: David Disseldorp Reviewed-by: Bryant G. Ly Reviewed-by: Lee Duncan Reviewed-by: Hannes Reinecke Reviewed-by: Roman Bolshakov --- drivers/target/target_core_spc.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 8ffe712cb44d..4503f3336bc2 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -115,7 +115,8 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) */ memset(&buf[8], 0x20, INQUIRY_VENDOR_LEN + INQUIRY_MODEL_LEN + INQUIRY_REVISION_LEN); - memcpy(&buf[8], "LIO-ORG", sizeof("LIO-ORG") - 1); + memcpy(&buf[8], dev->t10_wwn.vendor, + strnlen(dev->t10_wwn.vendor, INQUIRY_VENDOR_LEN)); memcpy(&buf[16], dev->t10_wwn.model, strnlen(dev->t10_wwn.model, INQUIRY_MODEL_LEN)); memcpy(&buf[32], dev->t10_wwn.revision, @@ -258,8 +259,9 @@ spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) buf[off+1] = 0x1; /* T10 Vendor ID */ buf[off+2] = 0x0; /* left align Vendor ID and pad with spaces */ - memset(&buf[off+4], 0x20, 8); - memcpy(&buf[off+4], "LIO-ORG", sizeof("LIO-ORG") - 1); + memset(&buf[off+4], 0x20, INQUIRY_VENDOR_LEN); + memcpy(&buf[off+4], dev->t10_wwn.vendor, + strnlen(dev->t10_wwn.vendor, INQUIRY_VENDOR_LEN)); /* Extra Byte for NULL Terminator */ id_len++; /* Identifier Length */ From patchwork Wed Dec 5 12:18:38 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Disseldorp X-Patchwork-Id: 10713951 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 300BF13AF for ; Wed, 5 Dec 2018 12:18:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1A30F2C13E for ; Wed, 5 Dec 2018 12:18:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0B88E2C2CA; Wed, 5 Dec 2018 12:18:52 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A011B2C13E for ; Wed, 5 Dec 2018 12:18:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727267AbeLEMSu (ORCPT ); Wed, 5 Dec 2018 07:18:50 -0500 Received: from mx2.suse.de ([195.135.220.15]:46266 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727084AbeLEMSu (ORCPT ); Wed, 5 Dec 2018 07:18:50 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id F2A15B7C4; Wed, 5 Dec 2018 12:18:46 +0000 (UTC) From: David Disseldorp To: target-devel@vger.kernel.org Cc: bvanassche@acm.org, lduncan@suse.com, hare@suse.com, bly@catalogicsoftware.com, r.bolshakov@yadro.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, David Disseldorp Subject: [PATCH v7 5/5] target: perform t10_wwn ID initialisation in target_alloc_device() Date: Wed, 5 Dec 2018 13:18:38 +0100 Message-Id: <20181205121838.23982-6-ddiss@suse.de> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20181205121838.23982-1-ddiss@suse.de> References: <20181205121838.23982-1-ddiss@suse.de> Sender: target-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Initialise the t10_wwn vendor, model and revision defaults when a device is allocated instead of when it's enabled. This ensures that custom vendor or model strings set prior to enablement are not later overwritten with default values. The TRANSPORT_FLAG_PASSTHROUGH conditional can be dropped for the following reasons: - target_core_pscsi overwrites the defaults in the pscsi_configure_device() callback. + the contents is then only used for ConfigFS via $pscsi_dev/statistics/scsi_lu/vend, etc. - target_core_user doesn't touch the defaults, nor are they used for anything outside of ConfigFS. Signed-off-by: David Disseldorp Reviewed-by: Roman Bolshakov --- drivers/target/target_core_device.c | 21 +++++++-------------- 1 file changed, 7 insertions(+), 14 deletions(-) diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index ebd787bb29a8..5ead7eae30b5 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -810,6 +810,13 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) mutex_init(&xcopy_lun->lun_tg_pt_md_mutex); xcopy_lun->lun_tpg = &xcopy_pt_tpg; + /* Preload the default INQUIRY const values */ + strlcpy(dev->t10_wwn.vendor, "LIO-ORG", sizeof(dev->t10_wwn.vendor)); + strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod, + sizeof(dev->t10_wwn.model)); + strlcpy(dev->t10_wwn.revision, dev->transport->inquiry_rev, + sizeof(dev->t10_wwn.revision)); + return dev; } @@ -984,20 +991,6 @@ int target_configure_device(struct se_device *dev) */ INIT_WORK(&dev->qf_work_queue, target_qf_do_work); - /* - * Preload the initial INQUIRY const values if we are doing - * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI - * passthrough because this is being provided by the backend LLD. - */ - if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) { - strlcpy(dev->t10_wwn.vendor, "LIO-ORG", - sizeof(dev->t10_wwn.vendor)); - strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod, - sizeof(dev->t10_wwn.model)); - strlcpy(dev->t10_wwn.revision, dev->transport->inquiry_rev, - sizeof(dev->t10_wwn.revision)); - } - scsi_dump_inquiry(dev); spin_lock(&hba->device_lock);