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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef BTRFS_INODE_ITEM_H
- #define BTRFS_INODE_ITEM_H
- #include <linux/types.h>
- struct btrfs_trans_handle;
- struct btrfs_root;
- struct btrfs_path;
- struct btrfs_key;
- struct btrfs_inode_extref;
- struct btrfs_inode;
- struct extent_buffer;
- /*
- * Return this if we need to call truncate_block for the last bit of the
- * truncate.
- */
- #define BTRFS_NEED_TRUNCATE_BLOCK 1
- struct btrfs_truncate_control {
- /*
- * IN: the inode we're operating on, this can be NULL if
- * ->clear_extent_range is false.
- */
- struct btrfs_inode *inode;
- /* IN: the size we're truncating to. */
- u64 new_size;
- /* OUT: the number of extents truncated. */
- u64 extents_found;
- /* OUT: the last size we truncated this inode to. */
- u64 last_size;
- /* OUT: the number of bytes to sub from this inode. */
- u64 sub_bytes;
- /* IN: the ino we are truncating. */
- u64 ino;
- /*
- * IN: minimum key type to remove. All key types with this type are
- * removed only if their offset >= new_size.
- */
- u32 min_type;
- /*
- * IN: true if we don't want to do extent reference updates for any file
- * extents we drop.
- */
- bool skip_ref_updates;
- /*
- * IN: true if we need to clear the file extent range for the inode as
- * we drop the file extent items.
- */
- bool clear_extent_range;
- };
- int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_truncate_control *control);
- int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, const struct fscrypt_str *name,
- u64 inode_objectid, u64 ref_objectid, u64 index);
- int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, const struct fscrypt_str *name,
- u64 inode_objectid, u64 ref_objectid, u64 *index);
- int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 objectid);
- int btrfs_lookup_inode(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, struct btrfs_path *path,
- struct btrfs_key *location, int mod);
- struct btrfs_inode_extref *btrfs_lookup_inode_extref(
- struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path,
- const struct fscrypt_str *name,
- u64 inode_objectid, u64 ref_objectid, int ins_len,
- int cow);
- struct btrfs_inode_ref *btrfs_find_name_in_backref(struct extent_buffer *leaf,
- int slot,
- const struct fscrypt_str *name);
- struct btrfs_inode_extref *btrfs_find_name_in_ext_backref(
- struct extent_buffer *leaf, int slot, u64 ref_objectid,
- const struct fscrypt_str *name);
- #endif
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