From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-integrity@vger.kernel.org, linux-api@vger.kernel.org,
"Theodore Y . Ts'o" <tytso@mit.edu>,
Jaegeuk Kim <jaegeuk@kernel.org>,
Victor Hsieh <victorhsieh@google.com>
Subject: [PATCH v3 05/15] fs-verity: add inode and superblock fields
Date: Thu, 23 May 2019 09:18:01 -0700 [thread overview]
Message-ID: <20190523161811.6259-6-ebiggers@kernel.org> (raw)
In-Reply-To: <20190523161811.6259-1-ebiggers@kernel.org>
From: Eric Biggers <ebiggers@google.com>
Analogous to fs/crypto/, add fields to the VFS inode and superblock for
use by the fs/verity/ support layer:
- ->s_vop: points to the fsverity_operations if the filesystem supports
fs-verity, otherwise is NULL.
- ->i_verity_info: points to cached fs-verity information for the inode
after someone opens it, otherwise is NULL.
- S_VERITY: bit in ->i_flags that identifies verity inodes, even when
they haven't been opened yet and thus still have NULL ->i_verity_info.
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
include/linux/fs.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f7fdfe93e25d3..a80a192cdcf28 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -64,6 +64,8 @@ struct workqueue_struct;
struct iov_iter;
struct fscrypt_info;
struct fscrypt_operations;
+struct fsverity_info;
+struct fsverity_operations;
struct fs_context;
struct fs_parameter_description;
@@ -723,6 +725,10 @@ struct inode {
struct fscrypt_info *i_crypt_info;
#endif
+#ifdef CONFIG_FS_VERITY
+ struct fsverity_info *i_verity_info;
+#endif
+
void *i_private; /* fs or device private pointer */
} __randomize_layout;
@@ -1429,6 +1435,9 @@ struct super_block {
const struct xattr_handler **s_xattr;
#ifdef CONFIG_FS_ENCRYPTION
const struct fscrypt_operations *s_cop;
+#endif
+#ifdef CONFIG_FS_VERITY
+ const struct fsverity_operations *s_vop;
#endif
struct hlist_bl_head s_roots; /* alternate root dentries for NFS */
struct list_head s_mounts; /* list of mounts; _not_ for fs use */
@@ -1964,6 +1973,7 @@ struct super_operations {
#endif
#define S_ENCRYPTED 16384 /* Encrypted file (using fs/crypto/) */
#define S_CASEFOLD 32768 /* Casefolded file */
+#define S_VERITY 65536 /* Verity file (using fs/verity/) */
/*
* Note that nosuid etc flags are inode-specific: setting some file-system
@@ -2005,6 +2015,7 @@ static inline bool sb_rdonly(const struct super_block *sb) { return sb->s_flags
#define IS_DAX(inode) ((inode)->i_flags & S_DAX)
#define IS_ENCRYPTED(inode) ((inode)->i_flags & S_ENCRYPTED)
#define IS_CASEFOLDED(inode) ((inode)->i_flags & S_CASEFOLD)
+#define IS_VERITY(inode) ((inode)->i_flags & S_VERITY)
#define IS_WHITEOUT(inode) (S_ISCHR(inode->i_mode) && \
(inode)->i_rdev == WHITEOUT_DEV)
--
2.21.0
next prev parent reply other threads:[~2019-05-23 16:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-23 16:17 [PATCH v3 00/15] fs-verity: read-only file-based authenticity protection Eric Biggers
2019-05-23 16:17 ` [PATCH v3 01/15] fs-verity: add a documentation file Eric Biggers
2019-05-23 16:17 ` [PATCH v3 02/15] fs-verity: add MAINTAINERS file entry Eric Biggers
2019-05-23 16:17 ` [PATCH v3 03/15] fs-verity: add UAPI header Eric Biggers
2019-05-23 16:18 ` [PATCH v3 04/15] fs-verity: add Kconfig and the helper functions for hashing Eric Biggers
2019-05-23 16:18 ` Eric Biggers [this message]
2019-05-23 16:18 ` [PATCH v3 06/15] fs-verity: add the hook for file ->open() Eric Biggers
2019-05-23 16:18 ` [PATCH v3 07/15] fs-verity: add the hook for file ->setattr() Eric Biggers
2019-05-23 16:18 ` [PATCH v3 08/15] fs-verity: add data verification hooks for ->readpages() Eric Biggers
2019-05-23 16:18 ` [PATCH v3 09/15] fs-verity: implement FS_IOC_ENABLE_VERITY ioctl Eric Biggers
2019-05-23 16:18 ` [PATCH v3 10/15] fs-verity: implement FS_IOC_MEASURE_VERITY ioctl Eric Biggers
2019-05-23 16:18 ` [PATCH v3 11/15] fs-verity: add SHA-512 support Eric Biggers
2019-05-23 16:18 ` [PATCH v3 12/15] fs-verity: support builtin file signatures Eric Biggers
2019-05-23 16:18 ` [PATCH v3 13/15] ext4: add basic fs-verity support Eric Biggers
2019-05-23 16:18 ` [PATCH v3 14/15] ext4: add fs-verity read support Eric Biggers
2019-05-23 16:18 ` [PATCH v3 15/15] f2fs: add fs-verity support Eric Biggers
2019-05-30 18:54 ` [PATCH v3 00/15] fs-verity: read-only file-based authenticity protection Eric Biggers
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