From patchwork Thu Aug 24 14:19:01 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gilad Ben-Yossef X-Patchwork-Id: 9920221 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id F20EE60349 for ; Thu, 24 Aug 2017 14:24:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E7D5C28BF4 for ; Thu, 24 Aug 2017 14:24:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DC52928BF8; Thu, 24 Aug 2017 14:24:00 +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=-2.6 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_LOW autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8300028BF5 for ; Thu, 24 Aug 2017 14:24:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=UnWIdl9biM0YIukMCONX4ELyG1R81Glp1f+A+6BmDi4=; b=MDoyTy1scBmobXDDpQn+efNvgv zeTiUChr3xIVWxwdgNKsm4rdosPyAKwW6Waci/7PpSQ2NSkreaA0AlBLrQHj5ZyQTB16M3EShCIfY 5PrhqgU0s3VUHBneSi/EzosazYTK+1tPkbVZqlbMIEeElLef5faRiCpaAoKIrJiR30+bQ0+8erO5Y iTuVrBKwRGsQbit0JGeIgonYuCHFqWRC4uGq1xUqFYXshxJ5njnGScUoH2K/xxvIx/+mNZaI/Xw0q rCtvdH00yJ0rkQZPYXM3o5JnnWm/ycsVeWa/NT4x/LX+5/+G4vRv+bDBTiEeqG6iOM8ru2KRTzkLp FeFn3fVA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dkt36-0000NE-63; Thu, 24 Aug 2017 14:23:56 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dkt1r-0007Yf-Jo; Thu, 24 Aug 2017 14:22:42 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 142B71A9A; Thu, 24 Aug 2017 07:22:22 -0700 (PDT) Received: from gby.kfn.arm.com (unknown [10.45.48.132]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0A6473F540; Thu, 24 Aug 2017 07:22:13 -0700 (PDT) From: Gilad Ben-Yossef To: Herbert Xu , "David S. Miller" , Jonathan Corbet , David Howells , Tom Lendacky , Gary Hook , Boris Brezillon , Arnaud Ebalard , Matthias Brugger , Alasdair Kergon , Mike Snitzer , dm-devel@redhat.com, Shaohua Li , Steve French , "Theodore Y. Ts'o" , Jaegeuk Kim , Mimi Zohar , Dmitry Kasatkin , James Morris , "Serge E. Hallyn" , linux-crypto@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, keyrings@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-raid@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-fscrypt@vger.kernel.org, linux-ima-devel@lists.sourceforge.net, linux-ima-user@lists.sourceforge.net, linux-security-module@vger.kernel.org Subject: [PATCH v7 14/19] ima: move to generic async completion Date: Thu, 24 Aug 2017 17:19:01 +0300 Message-Id: <1503584350-7831-15-git-send-email-gilad@benyossef.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1503584350-7831-1-git-send-email-gilad@benyossef.com> References: <1503584350-7831-1-git-send-email-gilad@benyossef.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170824_072239_794714_C9CC3306 X-CRM114-Status: GOOD ( 12.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ofir Drang MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP ima starts several async crypto ops and waits for their completions. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef Acked-by: Mimi Zohar --- security/integrity/ima/ima_crypto.c | 56 +++++++++++-------------------------- 1 file changed, 17 insertions(+), 39 deletions(-) diff --git a/security/integrity/ima/ima_crypto.c b/security/integrity/ima/ima_crypto.c index a856d8c..9057b16 100644 --- a/security/integrity/ima/ima_crypto.c +++ b/security/integrity/ima/ima_crypto.c @@ -27,11 +27,6 @@ #include "ima.h" -struct ahash_completion { - struct completion completion; - int err; -}; - /* minimum file size for ahash use */ static unsigned long ima_ahash_minsize; module_param_named(ahash_minsize, ima_ahash_minsize, ulong, 0644); @@ -196,30 +191,13 @@ static void ima_free_atfm(struct crypto_ahash *tfm) crypto_free_ahash(tfm); } -static void ahash_complete(struct crypto_async_request *req, int err) +static inline int ahash_wait(int err, struct crypto_wait *wait) { - struct ahash_completion *res = req->data; - if (err == -EINPROGRESS) - return; - res->err = err; - complete(&res->completion); -} + err = crypto_wait_req(err, wait); -static int ahash_wait(int err, struct ahash_completion *res) -{ - switch (err) { - case 0: - break; - case -EINPROGRESS: - case -EBUSY: - wait_for_completion(&res->completion); - reinit_completion(&res->completion); - err = res->err; - /* fall through */ - default: + if (err) pr_crit_ratelimited("ahash calculation failed: err: %d\n", err); - } return err; } @@ -233,7 +211,7 @@ static int ima_calc_file_hash_atfm(struct file *file, int rc, read = 0, rbuf_len, active = 0, ahash_rc = 0; struct ahash_request *req; struct scatterlist sg[1]; - struct ahash_completion res; + struct crypto_wait wait; size_t rbuf_size[2]; hash->length = crypto_ahash_digestsize(tfm); @@ -242,12 +220,12 @@ static int ima_calc_file_hash_atfm(struct file *file, if (!req) return -ENOMEM; - init_completion(&res.completion); + crypto_init_wait(&wait); ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP, - ahash_complete, &res); + crypto_req_done, &wait); - rc = ahash_wait(crypto_ahash_init(req), &res); + rc = ahash_wait(crypto_ahash_init(req), &wait); if (rc) goto out1; @@ -288,7 +266,7 @@ static int ima_calc_file_hash_atfm(struct file *file, * read/request, wait for the completion of the * previous ahash_update() request. */ - rc = ahash_wait(ahash_rc, &res); + rc = ahash_wait(ahash_rc, &wait); if (rc) goto out3; } @@ -304,7 +282,7 @@ static int ima_calc_file_hash_atfm(struct file *file, * read/request, wait for the completion of the * previous ahash_update() request. */ - rc = ahash_wait(ahash_rc, &res); + rc = ahash_wait(ahash_rc, &wait); if (rc) goto out3; } @@ -318,7 +296,7 @@ static int ima_calc_file_hash_atfm(struct file *file, active = !active; /* swap buffers, if we use two */ } /* wait for the last update request to complete */ - rc = ahash_wait(ahash_rc, &res); + rc = ahash_wait(ahash_rc, &wait); out3: if (read) file->f_mode &= ~FMODE_READ; @@ -327,7 +305,7 @@ static int ima_calc_file_hash_atfm(struct file *file, out2: if (!rc) { ahash_request_set_crypt(req, NULL, hash->digest, 0); - rc = ahash_wait(crypto_ahash_final(req), &res); + rc = ahash_wait(crypto_ahash_final(req), &wait); } out1: ahash_request_free(req); @@ -537,7 +515,7 @@ static int calc_buffer_ahash_atfm(const void *buf, loff_t len, { struct ahash_request *req; struct scatterlist sg; - struct ahash_completion res; + struct crypto_wait wait; int rc, ahash_rc = 0; hash->length = crypto_ahash_digestsize(tfm); @@ -546,12 +524,12 @@ static int calc_buffer_ahash_atfm(const void *buf, loff_t len, if (!req) return -ENOMEM; - init_completion(&res.completion); + crypto_init_wait(&wait); ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP, - ahash_complete, &res); + crypto_req_done, &wait); - rc = ahash_wait(crypto_ahash_init(req), &res); + rc = ahash_wait(crypto_ahash_init(req), &wait); if (rc) goto out; @@ -561,10 +539,10 @@ static int calc_buffer_ahash_atfm(const void *buf, loff_t len, ahash_rc = crypto_ahash_update(req); /* wait for the update request to complete */ - rc = ahash_wait(ahash_rc, &res); + rc = ahash_wait(ahash_rc, &wait); if (!rc) { ahash_request_set_crypt(req, NULL, hash->digest, 0); - rc = ahash_wait(crypto_ahash_final(req), &res); + rc = ahash_wait(crypto_ahash_final(req), &wait); } out: ahash_request_free(req);