[PATCH 05/11] fsverity: deconstify the inode pointer in struct fsverity_info

[Christoph Hellwig <hch@lst.de>]

A lot of file system code expects a non-const inode pointer.  Dropping
the const qualifier here allows using the inode pointer in
verify_data_block and prepares for further argument reductions.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
---
 fs/verity/fsverity_private.h | 4 ++--
 fs/verity/open.c             | 2 +-
 fs/verity/verify.c           | 5 +++--
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/fs/verity/fsverity_private.h b/fs/verity/fsverity_private.h
index dd20b138d452..f9f3936b0a89 100644
--- a/fs/verity/fsverity_private.h
+++ b/fs/verity/fsverity_private.h
@@ -73,7 +73,7 @@ struct fsverity_info {
 	struct merkle_tree_params tree_params;
 	u8 root_hash[FS_VERITY_MAX_DIGEST_SIZE];
 	u8 file_digest[FS_VERITY_MAX_DIGEST_SIZE];
-	const struct inode *inode;
+	struct inode *inode;
 	unsigned long *hash_block_verified;
 };
 
@@ -124,7 +124,7 @@ int fsverity_init_merkle_tree_params(struct merkle_tree_params *params,
 				     unsigned int log_blocksize,
 				     const u8 *salt, size_t salt_size);
 
-struct fsverity_info *fsverity_create_info(const struct inode *inode,
+struct fsverity_info *fsverity_create_info(struct inode *inode,
 					   struct fsverity_descriptor *desc);
 
 void fsverity_set_info(struct inode *inode, struct fsverity_info *vi);
diff --git a/fs/verity/open.c b/fs/verity/open.c
index 090cb77326ee..128502cf0a23 100644
--- a/fs/verity/open.c
+++ b/fs/verity/open.c
@@ -175,7 +175,7 @@ static void compute_file_digest(const struct fsverity_hash_alg *hash_alg,
  * appended builtin signature), and check the signature if present.  The
  * fsverity_descriptor must have already undergone basic validation.
  */
-struct fsverity_info *fsverity_create_info(const struct inode *inode,
+struct fsverity_info *fsverity_create_info(struct inode *inode,
 					   struct fsverity_descriptor *desc)
 {
 	struct fsverity_info *vi;
diff --git a/fs/verity/verify.c b/fs/verity/verify.c
index dac004f2a1a0..0de55c8e4217 100644
--- a/fs/verity/verify.c
+++ b/fs/verity/verify.c
@@ -157,9 +157,10 @@ static bool is_hash_block_verified(struct fsverity_info *vi, struct page *hpage,
  *
  * Return: %true if the data block is valid, else %false.
  */
-static bool verify_data_block(struct inode *inode, struct fsverity_info *vi,
+static bool verify_data_block(struct fsverity_info *vi,
 			      const struct fsverity_pending_block *dblock)
 {
+	struct inode *inode = vi->inode;
 	const u64 data_pos = dblock->pos;
 	const struct merkle_tree_params *params = &vi->tree_params;
 	const unsigned int hsize = params->digest_size;
@@ -362,7 +363,7 @@ fsverity_verify_pending_blocks(struct fsverity_verification_context *ctx)
 	}
 
 	for (i = 0; i < ctx->num_pending; i++) {
-		if (!verify_data_block(ctx->inode, vi, &ctx->pending_blocks[i]))
+		if (!verify_data_block(vi, &ctx->pending_blocks[i]))
 			return false;
 	}
 	fsverity_clear_pending_blocks(ctx);
-- 
2.47.3