fsverity: pass struct file to ->write_merkle_tree_block

This will make an iomap implementation of the method easier.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Andrey Albershteyn <aalbersh@redhat.com>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Acked-by: David Sterba <dsterba@suse.com> # btrfs
Link: https://lore.kernel.org/r/20260128152630.627409-6-hch@lst.de
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

5 files changed, 17 insertions, 15 deletions

diff --git a/fs/btrfs/verity.c b/fs/btrfs/verity.c
index a2ac3fb68bc8..e7643c22a6bf 100644
--- a/fs/btrfs/verity.c
+++ b/fs/btrfs/verity.c
@@ -774,16 +774,17 @@ out:
 /*
  * fsverity op that writes a Merkle tree block into the btree.
  *
- * @inode:	inode to write a Merkle tree block for
+ * @file:	file to write a Merkle tree block for
  * @buf:	Merkle tree block to write
  * @pos:	the position of the block in the Merkle tree (in bytes)
  * @size:	the Merkle tree block size (in bytes)
  *
  * Returns 0 on success or negative error code on failure
  */
-static int btrfs_write_merkle_tree_block(struct inode *inode, const void *buf,
+static int btrfs_write_merkle_tree_block(struct file *file, const void *buf,
 					 u64 pos, unsigned int size)
 {
+	struct inode *inode = file_inode(file);
 	loff_t merkle_pos = merkle_file_pos(inode);
 
 	if (merkle_pos < 0)
diff --git a/fs/ext4/verity.c b/fs/ext4/verity.c
index 415d9c4d8a32..2ce4cf8a1e31 100644
--- a/fs/ext4/verity.c
+++ b/fs/ext4/verity.c
@@ -380,12 +380,12 @@ static struct page *ext4_read_merkle_tree_page(struct inode *inode,
 	return folio_file_page(folio, index);
 }
 
-static int ext4_write_merkle_tree_block(struct inode *inode, const void *buf,
+static int ext4_write_merkle_tree_block(struct file *file, const void *buf,
 					u64 pos, unsigned int size)
 {
-	pos += ext4_verity_metadata_pos(inode);
+	pos += ext4_verity_metadata_pos(file_inode(file));
 
-	return pagecache_write(inode, buf, size, pos);
+	return pagecache_write(file_inode(file), buf, size, pos);
 }
 
 const struct fsverity_operations ext4_verityops = {
diff --git a/fs/f2fs/verity.c b/fs/f2fs/verity.c
index 05b935b55216..c1c4d8044681 100644
--- a/fs/f2fs/verity.c
+++ b/fs/f2fs/verity.c
@@ -278,12 +278,12 @@ static struct page *f2fs_read_merkle_tree_page(struct inode *inode,
 	return folio_file_page(folio, index);
 }
 
-static int f2fs_write_merkle_tree_block(struct inode *inode, const void *buf,
+static int f2fs_write_merkle_tree_block(struct file *file, const void *buf,
 					u64 pos, unsigned int size)
 {
-	pos += f2fs_verity_metadata_pos(inode);
+	pos += f2fs_verity_metadata_pos(file_inode(file));
 
-	return pagecache_write(inode, buf, size, pos);
+	return pagecache_write(file_inode(file), buf, size, pos);
 }
 
 const struct fsverity_operations f2fs_verityops = {
diff --git a/fs/verity/enable.c b/fs/verity/enable.c
index 95ec42b84797..c56c18e2605b 100644
--- a/fs/verity/enable.c
+++ b/fs/verity/enable.c
@@ -41,14 +41,15 @@ static int hash_one_block(const struct merkle_tree_params *params,
 	return 0;
 }
 
-static int write_merkle_tree_block(struct inode *inode, const u8 *buf,
+static int write_merkle_tree_block(struct file *file, const u8 *buf,
 				   unsigned long index,
 				   const struct merkle_tree_params *params)
 {
+	struct inode *inode = file_inode(file);
 	u64 pos = (u64)index << params->log_blocksize;
 	int err;
 
-	err = inode->i_sb->s_vop->write_merkle_tree_block(inode, buf, pos,
+	err = inode->i_sb->s_vop->write_merkle_tree_block(file, buf, pos,
 							  params->block_size);
 	if (err)
 		fsverity_err(inode, "Error %d writing Merkle tree block %lu",
@@ -135,7 +136,7 @@ static int build_merkle_tree(struct file *filp,
 			err = hash_one_block(params, &buffers[level]);
 			if (err)
 				goto out;
-			err = write_merkle_tree_block(inode,
+			err = write_merkle_tree_block(filp,
 						      buffers[level].data,
 						      level_offset[level],
 						      params);
@@ -155,7 +156,7 @@ static int build_merkle_tree(struct file *filp,
 			err = hash_one_block(params, &buffers[level]);
 			if (err)
 				goto out;
-			err = write_merkle_tree_block(inode,
+			err = write_merkle_tree_block(filp,
 						      buffers[level].data,
 						      level_offset[level],
 						      params);
diff --git a/include/linux/fsverity.h b/include/linux/fsverity.h
index ea1ed2e6c2f9..ac5c98fd4602 100644
--- a/include/linux/fsverity.h
+++ b/include/linux/fsverity.h
@@ -114,9 +114,9 @@ struct fsverity_operations {
 					      unsigned long num_ra_pages);
 
 	/**
-	 * Write a Merkle tree block to the given inode.
+	 * Write a Merkle tree block to the given file.
 	 *
-	 * @inode: the inode for which the Merkle tree is being built
+	 * @file: the file for which the Merkle tree is being built
 	 * @buf: the Merkle tree block to write
 	 * @pos: the position of the block in the Merkle tree (in bytes)
 	 * @size: the Merkle tree block size (in bytes)
@@ -126,7 +126,7 @@ struct fsverity_operations {
 	 *
 	 * Return: 0 on success, -errno on failure
 	 */
-	int (*write_merkle_tree_block)(struct inode *inode, const void *buf,
+	int (*write_merkle_tree_block)(struct file *file, const void *buf,
 				       u64 pos, unsigned int size);
 };