[PATCH RFC 17/29] xfs: initialize fs-verity on file open and cleanup on inode destruction

Andrey Albershteyn
2025-07-28T20:31:42Z

From: Andrey Albershteyn <aalbersh@redhat.com>

fs-verity will read and attach metadata (not the tree itself) from
a disk for those inodes which already have fs-verity enabled.

Signed-off-by: Andrey Albershteyn <aalbersh@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
fs/xfs/xfs_file.c | 8 ++++++++
fs/xfs/xfs_super.c | 2 ++
2 files changed, 10 insertions(+)

diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 0b41b18debf3..da13162925d9 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -34,6 +34,7 @@
#include <linux/mman.h>
#include <linux/fadvise.h>
#include <linux/mount.h>
+#include <linux/fsverity.h>

static const struct vm_operations_struct xfs_file_vm_ops;

@@ -1555,11 +1556,18 @@ xfs_file_open(
struct inode *inode,
struct file *file)
{
+ int error;
+
if (xfs_is_shutdown(XFS_M(inode->i_sb)))
return -EIO;
file->f_mode |= FMODE_NOWAIT | FMODE_CAN_ODIRECT;
if (xfs_get_atomic_write_min(XFS_I(inode)) > 0)
file->f_mode |= FMODE_CAN_ATOMIC_WRITE;
+
+ error = fsverity_file_open(inode, file);
+ if (error)
+ return error;
+
return generic_file_open(inode, file);
}

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index bb0a82635a77..7b1ace75955c 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -53,6 +53,7 @@
#include <linux/magic.h>
#include <linux/fs_context.h>
#include <linux/fs_parser.h>
+#include <linux/fsverity.h>

static const struct super_operations xfs_super_operations;

@@ -699,6 +700,7 @@ xfs_fs_destroy_inode(
ASSERT(!rwsem_is_locked(&inode->i_rwsem));
XFS_STATS_INC(ip->i_mount, vn_rele);
XFS_STATS_INC(ip->i_mount, vn_remove);
+ fsverity_cleanup_inode(inode);
xfs_inode_mark_reclaimable(ip);
}

--
2.50.0