{"id":2221429,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2221429/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/patch/20260409131404.1545834-3-aalbersh@kernel.org/","project":{"id":8,"url":"http://patchwork.ozlabs.org/api/1.2/projects/8/?format=json","name":"Linux ext4 filesystem development","link_name":"linux-ext4","list_id":"linux-ext4.vger.kernel.org","list_email":"linux-ext4@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260409131404.1545834-3-aalbersh@kernel.org>","list_archive_url":null,"date":"2026-04-09T13:13:34","name":"[v7,02/22] fsverity: expose ensure_fsverity_info()","commit_ref":null,"pull_url":null,"state":"not-applicable","archived":false,"hash":"e0b2295fc6309aa72f431d4008ecf577e6cf3994","submitter":{"id":92821,"url":"http://patchwork.ozlabs.org/api/1.2/people/92821/?format=json","name":"Andrey Albershteyn","email":"aalbersh@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-ext4/patch/20260409131404.1545834-3-aalbersh@kernel.org/mbox/","series":[{"id":499292,"url":"http://patchwork.ozlabs.org/api/1.2/series/499292/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-ext4/list/?series=499292","date":"2026-04-09T13:13:34","name":"fs-verity support for XFS with post EOF merkle tree","version":7,"mbox":"http://patchwork.ozlabs.org/series/499292/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2221429/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2221429/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-ext4@vger.kernel.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","patchwork-incoming@ozlabs.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=fwUQZlNx;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=150.107.74.76; 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arc=none smtp.client-ip=10.30.226.201"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775740457;\n\tbh=5N+dWqoeOYxeisPRy5znoys7rfHJB7cC5xNXENMMBQQ=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=fwUQZlNxl+io2MdTLLrkilUN3sJss98rjzTKiKrEDrYawljjKTeUFoiLLbOuW2+BV\n\t xh3VXcYfS0MvNhMWNtMy1CmqTY4J1uDB6t4XigmmL1rIlJOSxIInDMH0SrYm489sDf\n\t nDEw3JIiGR9gxNdMCVBWITM6DZqtHQy4yKl9EoKJFFhFyzGqEzHuC1E7t3akL6dC1a\n\t n5hGssVv3PFnAvp9TNtkQl7VsDnOrgz7k6jqYbw5aUve0rhoJaMhggdkWMJVdoevDy\n\t yBV/hU0XM8MPU7kWwvpS8Gwcgk0PGvYotKw1eJd3b75SOVbmIoWlybUQPz8RRPQqKJ\n\t w1C5okfgbjcJg==","From":"Andrey Albershteyn ","To":"linux-xfs@vger.kernel.org,\n\tfsverity@lists.linux.dev,\n\tlinux-fsdevel@vger.kernel.org,\n\tebiggers@kernel.org","Cc":"Andrey Albershteyn ,\n\thch@lst.de,\n\tlinux-ext4@vger.kernel.org,\n\tlinux-f2fs-devel@lists.sourceforge.net,\n\tlinux-btrfs@vger.kernel.org,\n\tdjwong@kernel.org","Subject":"[PATCH v7 02/22] fsverity: expose ensure_fsverity_info()","Date":"Thu, 9 Apr 2026 15:13:34 +0200","Message-ID":"<20260409131404.1545834-3-aalbersh@kernel.org>","X-Mailer":"git-send-email 2.51.2","In-Reply-To":"<20260409131404.1545834-1-aalbersh@kernel.org>","References":"<20260409131404.1545834-1-aalbersh@kernel.org>","Precedence":"bulk","X-Mailing-List":"linux-ext4@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-Spam-Status":"No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tMAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org"},"content":"This function will be used by XFS's scrub to force fsverity activation,\ntherefore, to read fsverity context.\n\nReviewed-by: Darrick J. Wong \nAcked-by: Eric Biggers \nSigned-off-by: Andrey Albershteyn \n---\n fs/verity/open.c | 22 ++++++++++++++++++++--\n include/linux/fsverity.h | 2 ++\n 2 files changed, 22 insertions(+), 2 deletions(-)","diff":"diff --git a/fs/verity/open.c b/fs/verity/open.c\nindex dfa0d1afe0fe..d32d0899df25 100644\n--- a/fs/verity/open.c\n+++ b/fs/verity/open.c\n@@ -344,7 +344,24 @@ int fsverity_get_descriptor(struct inode *inode,\n \treturn 0;\n }\n \n-static int ensure_verity_info(struct inode *inode)\n+/**\n+ * fsverity_ensure_verity_info() - cache verity info if it's not already cached\n+ * @inode: the inode for which verity info should be cached\n+ *\n+ * Ensure this inode has verity info attached to it, it's assumed the inode\n+ * already has fsverity enabled. Read fsverity descriptor and creates verity\n+ * based on that.\n+ *\n+ * This needs to be called at least once before any of the inode's data\n+ * can be verified (and thus read at all) or the inode's fsverity digest\n+ * retrieved. fsverity_file_open() calls this already, which handles\n+ * normal file accesses. If a filesystem does any internal (i.e. not\n+ * associated with a file descriptor) reads of the file's data or\n+ * fsverity digest, it must call this explicitly before doing so.\n+ *\n+ * Return: 0 on success, -errno on failure\n+ */\n+int fsverity_ensure_verity_info(struct inode *inode)\n {\n \tstruct fsverity_info *vi = fsverity_get_info(inode), *found;\n \tstruct fsverity_descriptor *desc;\n@@ -380,12 +397,13 @@ static int ensure_verity_info(struct inode *inode)\n \tkfree(desc);\n \treturn err;\n }\n+EXPORT_SYMBOL_GPL(fsverity_ensure_verity_info);\n \n int __fsverity_file_open(struct inode *inode, struct file *filp)\n {\n \tif (filp->f_mode & FMODE_WRITE)\n \t\treturn -EPERM;\n-\treturn ensure_verity_info(inode);\n+\treturn fsverity_ensure_verity_info(inode);\n }\n EXPORT_SYMBOL_GPL(__fsverity_file_open);\n \ndiff --git a/include/linux/fsverity.h b/include/linux/fsverity.h\nindex a8f9aa75b792..5562271bd628 100644\n--- a/include/linux/fsverity.h\n+++ b/include/linux/fsverity.h\n@@ -309,6 +309,8 @@ static inline int fsverity_file_open(struct inode *inode, struct file *filp)\n \treturn 0;\n }\n \n+int fsverity_ensure_verity_info(struct inode *inode);\n+\n void fsverity_cleanup_inode(struct inode *inode);\n \n struct page *generic_read_merkle_tree_page(struct inode *inode, pgoff_t index);\n","prefixes":["v7","02/22"]}