Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/patches/816573/?format=api
{ "id": 816573, "url": "http://patchwork.ozlabs.org/api/patches/816573/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/patch/20170920224605.22030-10-ebiggers3@gmail.com/", "project": { "id": 3, "url": "http://patchwork.ozlabs.org/api/projects/3/?format=api", "name": "Linux MTD development", "link_name": "linux-mtd", "list_id": "linux-mtd.lists.infradead.org", "list_email": "linux-mtd@lists.infradead.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170920224605.22030-10-ebiggers3@gmail.com>", "list_archive_url": null, "date": "2017-09-20T22:45:49", "name": "[09/25] fscrypt: new helper function - fscrypt_prepare_lookup()", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": false, "hash": "1d7f4b7a0b381c02271d03f209e42925a3966eb0", "submitter": { "id": 65202, "url": "http://patchwork.ozlabs.org/api/people/65202/?format=api", "name": "Eric Biggers", "email": "ebiggers3@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-mtd/patch/20170920224605.22030-10-ebiggers3@gmail.com/mbox/", "series": [ { "id": 4250, "url": "http://patchwork.ozlabs.org/api/series/4250/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/list/?series=4250", "date": "2017-09-20T22:45:45", "name": "fscrypt: add some higher-level helper functions", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/4250/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/816573/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/816573/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org; spf=none (mailfrom)\n\tsmtp.mailfrom=lists.infradead.org (client-ip=65.50.211.133;\n\thelo=bombadil.infradead.org;\n\tenvelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org; dkim=pass (2048-bit key;\n\tunprotected) header.d=lists.infradead.org\n\theader.i=@lists.infradead.org header.b=\"ahWjqRlF\"; \n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"faGvskiN\"; dkim-atps=neutral" ], "Received": [ "from bombadil.infradead.org (bombadil.infradead.org\n\t[65.50.211.133])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xyFM10znlz9sNr\n\tfor <incoming@patchwork.ozlabs.org>;\n\tThu, 21 Sep 2017 08:50:21 +1000 (AEST)", "from localhost ([127.0.0.1] helo=bombadil.infradead.org)\n\tby bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux))\n\tid 1dunor-0007Zp-B0; Wed, 20 Sep 2017 22:50:13 +0000", "from mail-pg0-x241.google.com ([2607:f8b0:400e:c05::241])\n\tby bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux))\n\tid 1dunm2-0004xq-PY\n\tfor linux-mtd@lists.infradead.org; Wed, 20 Sep 2017 22:47:36 +0000", "by mail-pg0-x241.google.com with SMTP id u18so2378849pgo.1\n\tfor <linux-mtd@lists.infradead.org>;\n\tWed, 20 Sep 2017 15:47:01 -0700 (PDT)", "from ebiggers-linuxstation.kir.corp.google.com ([100.66.174.81])\n\tby smtp.gmail.com with ESMTPSA id j2sm6249pgn.26.2017.09.20.15.47.00\n\t(version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128);\n\tWed, 20 Sep 2017 15:47:00 -0700 (PDT)" ], "DKIM-Signature": [ "v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20170209; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe:\n\tList-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References:\n\tIn-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID:\n\tContent-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc\n\t:Resent-Message-ID:List-Owner;\n\tbh=aRnM4QNHIYHousFZE+AGwQZynmLtRIlVi/OTwvg6WlE=;\n\tb=ahWjqRlF7KeQeN46D7AH84K0rA\n\tlyg50v/bBRit72L+iBF2ArMM5b95uMkJbIIbx9Lnnb5J5U7TwjzPtEE+Q2P0dz4aKuTvJZibtPYul\n\tIDzVTNuH30Mt5+6m0c3/exFVD+UVL4uKvxx8F7ykq7CPdDNOCSx40oZQ0GAK7N/hEkhFOs1xeHczD\n\tpHlLUlX9m7rUWomcZL4S7weS5CThDOZA1eu+DmeP1PBnRbtaHG3fSqePNysswEedmekjt/clrTMxG\n\tDnX8vAnBACK9ES2xxRMJE8IB+VbNTAtBTjYwYzgn4uZ9m9jfq8tixLLyFVRtapJTdPO67RhMBkE+3\n\tsqyfUvEg==;", "v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;\n\th=from:to:cc:subject:date:message-id:in-reply-to:references;\n\tbh=5C3TQyQ+3QBQNEZR0/tVKjPvU5CaNMNmDDtFsBid8wA=;\n\tb=faGvskiNBidGagoduCB1+QEWOKuGXaQ9OPBYeBmc/8YGmpX+bG16k9E6QN619pZ07l\n\t16iSe0bRWgrfONCrGIfXJvaK+LfC4lZzzbdgNH2lctat3ZnwXf92A3THZ5vVpc057Ozh\n\txkqMdQm9v05eOwoRtO7PZREG1tbH3Nw3tYfEfCIblcSVo6Jjco1ktJYVR5mtQ6HGsKaz\n\tYXDE6DIAgKa9KM0uHiw6F8OII/tKYhCPu4ra16EodwpH7HbdbpIL8EAf9xTc9IIrdWUb\n\t3eubRS5uDYIxrT0Y367+jX7/XyimGJilYNkgs97VYejT9kHkV1XSkvWeDpM3LgA4U1UD\n\tjr/Q==" ], "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references;\n\tbh=5C3TQyQ+3QBQNEZR0/tVKjPvU5CaNMNmDDtFsBid8wA=;\n\tb=MIorY/u1rhhHGaIuPViVc/kO90OzP7zyEfKPKF3UjYp8FXpAW74lluh+8lS7ww8ZrU\n\tvCyPrAWkjDKf9xR3KP9keySJ23OhKU9QXcwri0jWK82K3PbQ4ydtsPq9oMMu49h2OZ8A\n\tE6NVGiJNs5MJ/Ok00n+jp10M0HyY9FbpmFsv9YBJoc02UXTUWaQ+8HXXWRW1bswVhaJQ\n\t+adjU09Balm/9al+7w6czoM0utlQHKRNWyFs2PXqn9EnKNEvigJhH+zFMyLZNwNuqAEj\n\tqTlfIabmjiOP0udKhpmSwQPTwPfkGq0A68T2/fZOIOGE91N8xWGQyMLutCnr5AK6QsiE\n\tPPaw==", "X-Gm-Message-State": "AHPjjUisv6va3caeJf0j+i7i9wSb96EAYH8i09B5Bblzo9W4SXO963EF\n\toT8BJuL7pL/cRJGiQ6/ABuw=", "X-Google-Smtp-Source": "AOwi7QDHsUQw62RhFIHlUuu9xsYjJMkap/OruMuQMOSA65UmJjeiQ3SPam+ez8Ci+uKnCc5mfLrDOA==", "X-Received": "by 10.159.246.2 with SMTP id b2mr3523853pls.85.1505947621357;\n\tWed, 20 Sep 2017 15:47:01 -0700 (PDT)", "From": "Eric Biggers <ebiggers3@gmail.com>", "To": "linux-fscrypt@vger.kernel.org", "Subject": "[PATCH 09/25] fscrypt: new helper function -\n\tfscrypt_prepare_lookup()", "Date": "Wed, 20 Sep 2017 15:45:49 -0700", "Message-Id": "<20170920224605.22030-10-ebiggers3@gmail.com>", "X-Mailer": "git-send-email 2.14.1.821.g8fa685d3b7-goog", "In-Reply-To": "<20170920224605.22030-1-ebiggers3@gmail.com>", "References": "<20170920224605.22030-1-ebiggers3@gmail.com>", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20170920_154719_251301_430BB7D9 ", "X-CRM114-Status": "GOOD ( 13.10 )", "X-Spam-Score": "-1.8 (-)", "X-Spam-Report": "SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-1.8 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/,\n\tno\n\ttrust [2607:f8b0:400e:c05:0:0:0:241 listed in] [list.dnswl.org]\n\t-0.0 SPF_PASS SPF: sender matches SPF record\n\t0.2 FREEMAIL_ENVFROM_END_DIGIT Envelope-from freemail username ends\n\tin digit (ebiggers3[at]gmail.com)\n\t0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail\n\tprovider (ebiggers3[at]gmail.com)\n\t-1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n\t[score: 0.0000]\n\t-0.1 DKIM_VALID Message has at least one valid DKIM or DK signature\n\t0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n\tnot necessarily valid\n\t-0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n\tauthor's domain", "X-BeenThere": "linux-mtd@lists.infradead.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Id": "Linux MTD discussion mailing list <linux-mtd.lists.infradead.org>", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/linux-mtd>,\n\t<mailto:linux-mtd-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-mtd/>", "List-Post": "<mailto:linux-mtd@lists.infradead.org>", "List-Help": "<mailto:linux-mtd-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-mtd>,\n\t<mailto:linux-mtd-request@lists.infradead.org?subject=subscribe>", "Cc": "\"Theodore Y . Ts'o\" <tytso@mit.edu>, Eric Biggers <ebiggers@google.com>, \n\tMichael Halcrow <mhalcrow@google.com>,\n\tlinux-f2fs-devel@lists.sourceforge.net, \n\tlinux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org,\n\tJaegeuk Kim <jaegeuk@kernel.org>, linux-ext4@vger.kernel.org", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"linux-mtd\" <linux-mtd-bounces@lists.infradead.org>", "Errors-To": "linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org" }, "content": "From: Eric Biggers <ebiggers@google.com>\n\nIntroduce a helper function which prepares to look up the given dentry\nin the given directory. If the directory is encrypted, it handles\nloading the directory's encryption key, setting the dentry's ->d_op to\nfscrypt_d_ops, and setting DCACHE_ENCRYPTED_WITH_KEY if the directory's\nencryption key is available.\n\nNote: once all filesystems switch over to this, we'll be able to move\nfscrypt_d_ops and fscrypt_set_encrypted_dentry() to fscrypt_private.h.\n\nSigned-off-by: Eric Biggers <ebiggers@google.com>\n---\n fs/crypto/hooks.c | 18 ++++++++++++++++++\n include/linux/fscrypt_notsupp.h | 9 +++++++++\n include/linux/fscrypt_supp.h | 30 ++++++++++++++++++++++++++++++\n 3 files changed, 57 insertions(+)", "diff": "diff --git a/fs/crypto/hooks.c b/fs/crypto/hooks.c\nindex 822cb78f9b45..9f5fb2eb9cf7 100644\n--- a/fs/crypto/hooks.c\n+++ b/fs/crypto/hooks.c\n@@ -92,3 +92,21 @@ int __fscrypt_prepare_rename(struct inode *old_dir, struct dentry *old_dentry,\n \treturn 0;\n }\n EXPORT_SYMBOL_GPL(__fscrypt_prepare_rename);\n+\n+int __fscrypt_prepare_lookup(struct inode *dir, struct dentry *dentry)\n+{\n+\tint err = fscrypt_get_encryption_info(dir);\n+\n+\tif (err)\n+\t\treturn err;\n+\n+\tif (fscrypt_has_encryption_key(dir)) {\n+\t\tspin_lock(&dentry->d_lock);\n+\t\tdentry->d_flags |= DCACHE_ENCRYPTED_WITH_KEY;\n+\t\tspin_unlock(&dentry->d_lock);\n+\t}\n+\n+\td_set_d_op(dentry, &fscrypt_d_ops);\n+\treturn 0;\n+}\n+EXPORT_SYMBOL_GPL(__fscrypt_prepare_lookup);\ndiff --git a/include/linux/fscrypt_notsupp.h b/include/linux/fscrypt_notsupp.h\nindex a88a2959cd8c..e9b437605f9c 100644\n--- a/include/linux/fscrypt_notsupp.h\n+++ b/include/linux/fscrypt_notsupp.h\n@@ -209,4 +209,13 @@ static inline int fscrypt_prepare_rename(struct inode *old_dir,\n \treturn 0;\n }\n \n+static inline int fscrypt_prepare_lookup(struct inode *dir,\n+\t\t\t\t\t struct dentry *dentry,\n+\t\t\t\t\t unsigned int flags)\n+{\n+\tif (IS_ENCRYPTED(dir))\n+\t\treturn -EOPNOTSUPP;\n+\treturn 0;\n+}\n+\n #endif\t/* _LINUX_FSCRYPT_NOTSUPP_H */\ndiff --git a/include/linux/fscrypt_supp.h b/include/linux/fscrypt_supp.h\nindex fa062d41b39a..2b99bc01c59b 100644\n--- a/include/linux/fscrypt_supp.h\n+++ b/include/linux/fscrypt_supp.h\n@@ -240,4 +240,34 @@ static inline int fscrypt_prepare_rename(struct inode *old_dir,\n \treturn 0;\n }\n \n+extern int __fscrypt_prepare_lookup(struct inode *dir, struct dentry *dentry);\n+\n+/**\n+ * fscrypt_prepare_lookup - prepare to lookup a name in a possibly-encrypted directory\n+ * @dir: directory being searched\n+ * @dentry: filename being looked up\n+ * @flags: lookup flags\n+ *\n+ * Prepare for ->lookup() in a directory which may be encrypted. Lookups can be\n+ * done with or without the directory's encryption key; without the key,\n+ * filenames are presented in encrypted form. Therefore, we'll try to set up\n+ * the directory's encryption key, but even without it the lookup can continue.\n+ *\n+ * To allow invalidating stale dentries if the directory's encryption key is\n+ * added later, we also install a custom ->d_revalidate() method and use the\n+ * DCACHE_ENCRYPTED_WITH_KEY flag to indicate whether a given dentry is a\n+ * plaintext name (flag set) or a ciphertext name (flag cleared).\n+ *\n+ * Return: 0 on success, -errno if a problem occurred while setting up the\n+ * encryption key\n+ */\n+static inline int fscrypt_prepare_lookup(struct inode *dir,\n+\t\t\t\t\t struct dentry *dentry,\n+\t\t\t\t\t unsigned int flags)\n+{\n+\tif (IS_ENCRYPTED(dir))\n+\t\treturn __fscrypt_prepare_lookup(dir, dentry);\n+\treturn 0;\n+}\n+\n #endif\t/* _LINUX_FSCRYPT_SUPP_H */\n", "prefixes": [ "09/25" ] }