From patchwork Mon Jan 14 20:07:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 10763365 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 35F1814E5 for ; Mon, 14 Jan 2019 20:16:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 256012864F for ; Mon, 14 Jan 2019 20:16:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 199EC292C8; Mon, 14 Jan 2019 20:16:40 +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 616FA2864F for ; Mon, 14 Jan 2019 20:16:39 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id A67A2211B7384; Mon, 14 Jan 2019 12:16:33 -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=134.134.136.24; helo=mga09.intel.com; envelope-from=dave.jiang@intel.com; receiver=linux-nvdimm@lists.01.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) (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 B3EA421959CB2 for ; Mon, 14 Jan 2019 12:07:04 -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 orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Jan 2019 12:07:04 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,478,1539673200"; d="scan'208";a="311752850" Received: from djiang5-desk3.ch.intel.com ([143.182.136.93]) by fmsmga005.fm.intel.com with ESMTP; 14 Jan 2019 12:07:04 -0800 Subject: [PATCH v8 05/12] ndctl: add support for sanitize dimm From: Dave Jiang To: vishal.l.verma@intel.com, dan.j.williams@intel.com Date: Mon, 14 Jan 2019 13:07:03 -0700 Message-ID: <154749642390.63704.15541084216631565368.stgit@djiang5-desk3.ch.intel.com> In-Reply-To: <154749627829.63704.2987015129166185725.stgit@djiang5-desk3.ch.intel.com> References: <154749627829.63704.2987015129166185725.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 Add support to secure erase to libndctl and also command line option of "sanitize-dimm" for ndctl. This will initiate the request to crypto erase a DIMM. Signed-off-by: Dave Jiang --- Documentation/ndctl/Makefile.am | 3 +- Documentation/ndctl/ndctl-sanitize-dimm.txt | 38 ++++++++++++++++++++ ndctl/builtin.h | 1 + ndctl/dimm.c | 52 +++++++++++++++++++++++++++ ndctl/lib/dimm.c | 8 ++++ ndctl/lib/keys.c | 21 +++++++++-- ndctl/lib/libndctl.sym | 2 + ndctl/libndctl.h | 9 +++++ ndctl/ndctl.c | 1 + 9 files changed, 131 insertions(+), 4 deletions(-) create mode 100644 Documentation/ndctl/ndctl-sanitize-dimm.txt diff --git a/Documentation/ndctl/Makefile.am b/Documentation/ndctl/Makefile.am index a97f193d..bbea9674 100644 --- a/Documentation/ndctl/Makefile.am +++ b/Documentation/ndctl/Makefile.am @@ -51,7 +51,8 @@ man1_MANS = \ ndctl-enable-passphrase.1 \ ndctl-update-passphrase.1 \ ndctl-disable-passphrase.1 \ - ndctl-freeze-security.1 + ndctl-freeze-security.1 \ + ndctl-sanitize-dimm.1 CLEANFILES = $(man1_MANS) diff --git a/Documentation/ndctl/ndctl-sanitize-dimm.txt b/Documentation/ndctl/ndctl-sanitize-dimm.txt new file mode 100644 index 00000000..79629964 --- /dev/null +++ b/Documentation/ndctl/ndctl-sanitize-dimm.txt @@ -0,0 +1,38 @@ +// SPDX-License-Identifier: GPL-2.0 + +ndctl-sanitize-dimm(1) +====================== + +NAME +---- +ndctl-sanitize-dimm - sanitize the data on the NVDIMM + +SYNOPSIS +-------- +[verse] +'ndctl sanitize' [] + +DESCRIPTION +----------- +Provide a generic interface to crypto erase a NVDIMM. + +Search the user key ring for the associated NVDIMM. If not found, +attempt to load the key blob from the default location. After disabling +the passphrase, remove the key and the key blob. + +OPTIONS +------- +:: +include::xable-dimm-options.txt[] + +-p:: +--key-path=:: + Path to where key related files resides. This parameter is optional + and the default is set to /etc/ndctl/keys. + +-c:: +--crypto-erase:: + Replaces encryption keys and securely erases the data. This does not + change label data. This is the default sanitize method. + +include::../copyright.txt[] diff --git a/ndctl/builtin.h b/ndctl/builtin.h index f7469598..55bee47c 100644 --- a/ndctl/builtin.h +++ b/ndctl/builtin.h @@ -36,4 +36,5 @@ int cmd_passphrase_setup(int argc, const char **argv, struct ndctl_ctx *ctx); int cmd_passphrase_update(int argc, const char **argv, struct ndctl_ctx *ctx); int cmd_disable_passphrase(int argc, const char **argv, struct ndctl_ctx *ctx); int cmd_freeze_security(int argc, const char **argv, struct ndctl_ctx *ctx); +int cmd_sanitize_dimm(int argc, const char **argv, struct ndctl_ctx *ctx); #endif /* _NDCTL_BUILTIN_H_ */ diff --git a/ndctl/dimm.c b/ndctl/dimm.c index 19301791..a91b40d5 100644 --- a/ndctl/dimm.c +++ b/ndctl/dimm.c @@ -47,6 +47,7 @@ static struct parameters { const char *labelversion; const char *key_path; const char *master_key; + bool crypto_erase; bool force; bool json; bool verbose; @@ -894,6 +895,35 @@ static int action_security_freeze(struct ndctl_dimm *dimm, return rc; } +static int action_sanitize_dimm(struct ndctl_dimm *dimm, + struct action_context *actx) +{ + int rc; + + if (!ndctl_dimm_security_supported(dimm)) { + error("%s: security operation not supported\n", + ndctl_dimm_get_devname(dimm)); + return -EOPNOTSUPP; + } + + /* + * Setting crypto erase to be default. The other method will be + * overwrite. + */ + if (!param.crypto_erase) { + param.crypto_erase = true; + printf("No santize method passed in, default to crypto-erase\n"); + } + + if (param.crypto_erase) { + rc = ndctl_dimm_secure_erase_key(dimm, param.key_path); + if (rc < 0) + return rc; + } + + return 0; +} + static int __action_init(struct ndctl_dimm *dimm, enum ndctl_namespace_version version, int chk_only) { @@ -991,6 +1021,10 @@ OPT_FILENAME('p', "key-path", ¶m.key_path, "key-path", \ OPT_STRING('m', "master-key", ¶m.master_key, ":", \ "master key for security") +#define SANITIZE_OPTIONS() \ +OPT_BOOLEAN('c', "crypto-erase", ¶m.crypto_erase, \ + "crypto erase a dimm") + static const struct option read_options[] = { BASE_OPTIONS(), READ_OPTIONS(), @@ -1033,6 +1067,13 @@ static const struct option key_options[] = { OPT_END(), }; +static const struct option sanitize_options[] = { + BASE_OPTIONS(), + KEY_BASE_OPTIONS(), + SANITIZE_OPTIONS(), + OPT_END(), +}; + static int dimm_action(int argc, const char **argv, struct ndctl_ctx *ctx, int (*action)(struct ndctl_dimm *dimm, struct action_context *actx), const struct option *options, const char *usage) @@ -1313,3 +1354,14 @@ int cmd_freeze_security(int argc, const char **argv, void *ctx) count > 1 ? "s" : ""); return count >= 0 ? 0 : EXIT_FAILURE; } + +int cmd_sanitize_dimm(int argc, const char **argv, void *ctx) +{ + int count = dimm_action(argc, argv, ctx, action_sanitize_dimm, + sanitize_options, + "ndctl sanitize-dimm [..] []"); + + fprintf(stderr, "sanitized %d nmem%s.\n", count >= 0 ? count : 0, + count > 1 ? "s" : ""); + return count >= 0 ? 0 : EXIT_FAILURE; +} diff --git a/ndctl/lib/dimm.c b/ndctl/lib/dimm.c index 8f0f0486..285e09ce 100644 --- a/ndctl/lib/dimm.c +++ b/ndctl/lib/dimm.c @@ -677,3 +677,11 @@ NDCTL_EXPORT int ndctl_dimm_freeze_security(struct ndctl_dimm *dimm) { return write_security(dimm, "freeze"); } + +NDCTL_EXPORT int ndctl_dimm_secure_erase(struct ndctl_dimm *dimm, long key) +{ + char buf[SYSFS_ATTR_SIZE]; + + sprintf(buf, "erase %ld\n", key); + return write_security(dimm, buf); +} diff --git a/ndctl/lib/keys.c b/ndctl/lib/keys.c index 6dfbfd49..42281394 100644 --- a/ndctl/lib/keys.c +++ b/ndctl/lib/keys.c @@ -389,7 +389,8 @@ NDCTL_EXPORT int ndctl_dimm_update_key(struct ndctl_dimm *dimm, return 0; } -NDCTL_EXPORT int ndctl_dimm_disable_key(struct ndctl_dimm *dimm, +static int check_key_run_and_discard(struct ndctl_dimm *dimm, + int (*run_op)(struct ndctl_dimm *, long), const char *name, const char *keypath) { struct ndctl_ctx *ctx = ndctl_dimm_get_ctx(dimm); @@ -405,9 +406,9 @@ NDCTL_EXPORT int ndctl_dimm_disable_key(struct ndctl_dimm *dimm, } } - rc = ndctl_dimm_disable_passphrase(dimm, key); + rc = run_op(dimm, key); if (rc < 0) { - err(ctx, "Failed to disable security for %s\n", + err(ctx, "Failed %s for %s\n", name, ndctl_dimm_get_devname(dimm)); return rc; } @@ -417,3 +418,17 @@ NDCTL_EXPORT int ndctl_dimm_disable_key(struct ndctl_dimm *dimm, err(ctx, "Unable to cleanup key.\n"); return 0; } + +NDCTL_EXPORT int ndctl_dimm_disable_key(struct ndctl_dimm *dimm, + const char *keypath) +{ + return check_key_run_and_discard(dimm, ndctl_dimm_disable_passphrase, + "disable passphrase", keypath); +} + +NDCTL_EXPORT int ndctl_dimm_secure_erase_key(struct ndctl_dimm *dimm, + const char *keypath) +{ + return check_key_run_and_discard(dimm, ndctl_dimm_secure_erase, + "crypto erase", keypath); +} diff --git a/ndctl/lib/libndctl.sym b/ndctl/lib/libndctl.sym index a1c56060..0e3aa5d9 100644 --- a/ndctl/lib/libndctl.sym +++ b/ndctl/lib/libndctl.sym @@ -396,4 +396,6 @@ global: ndctl_dimm_disable_passphrase; ndctl_dimm_disable_key; ndctl_dimm_freeze_security; + ndctl_dimm_secure_erase; + ndctl_dimm_secure_erase_key; } LIBNDCTL_18; diff --git a/ndctl/libndctl.h b/ndctl/libndctl.h index 3862bbfd..bb4bab85 100644 --- a/ndctl/libndctl.h +++ b/ndctl/libndctl.h @@ -703,6 +703,7 @@ int ndctl_dimm_update_passphrase(struct ndctl_dimm *dimm, long ckey, long nkey); int ndctl_dimm_disable_passphrase(struct ndctl_dimm *dimm, long key); int ndctl_dimm_freeze_security(struct ndctl_dimm *dimm); +int ndctl_dimm_secure_erase(struct ndctl_dimm *dimm, long key); enum ndctl_key_type { ND_USER_KEY, @@ -715,6 +716,8 @@ int ndctl_dimm_enable_key(struct ndctl_dimm *dimm, const char *master, int ndctl_dimm_update_key(struct ndctl_dimm *dimm, const char *master, const char *keypath); int ndctl_dimm_disable_key(struct ndctl_dimm *dimm, const char *keypath); +int ndctl_dimm_secure_erase_key(struct ndctl_dimm *dimm, + const char *keypath); #else static inline int ndctl_dimm_enable_key(struct ndctl_dimm *dimm, const char *master, const char *keypath) @@ -733,6 +736,12 @@ static inline int ndctl_dimm_disable_key(struct ndctl_dimm *dimm, { return -EOPNOTSUPP; } + +static inline int ndctl_dimm_secure_erase_key(struct ndctl_dimm *dimm, + const char *keypath) +{ + return -EOPNOTSUPP; +} #endif #define ND_KEY_DESC_SIZE 128 diff --git a/ndctl/ndctl.c b/ndctl/ndctl.c index da8dce11..09af1317 100644 --- a/ndctl/ndctl.c +++ b/ndctl/ndctl.c @@ -92,6 +92,7 @@ static struct cmd_struct commands[] = { { "update-passphrase", { cmd_passphrase_update } }, { "disable-passphrase", { cmd_disable_passphrase } }, { "freeze-security", { cmd_freeze_security } }, + { "sanitize-dimm", { cmd_sanitize_dimm } }, { "list", { cmd_list } }, { "monitor", { cmd_monitor } }, { "help", { cmd_help } },