cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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inode-item.h (2691B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2
      3#ifndef BTRFS_INODE_ITEM_H
      4#define BTRFS_INODE_ITEM_H
      5
      6#include <linux/types.h>
      7
      8struct btrfs_trans_handle;
      9struct btrfs_root;
     10struct btrfs_path;
     11struct btrfs_key;
     12struct btrfs_inode_extref;
     13struct btrfs_inode;
     14struct extent_buffer;
     15
     16/*
     17 * Return this if we need to call truncate_block for the last bit of the
     18 * truncate.
     19 */
     20#define BTRFS_NEED_TRUNCATE_BLOCK		1
     21
     22struct btrfs_truncate_control {
     23	/*
     24	 * IN: the inode we're operating on, this can be NULL if
     25	 * ->clear_extent_range is false.
     26	 */
     27	struct btrfs_inode *inode;
     28
     29	/* IN: the size we're truncating to. */
     30	u64 new_size;
     31
     32	/* OUT: the number of extents truncated. */
     33	u64 extents_found;
     34
     35	/* OUT: the last size we truncated this inode to. */
     36	u64 last_size;
     37
     38	/* OUT: the number of bytes to sub from this inode. */
     39	u64 sub_bytes;
     40
     41	/* IN: the ino we are truncating. */
     42	u64 ino;
     43
     44	/*
     45	 * IN: minimum key type to remove.  All key types with this type are
     46	 * removed only if their offset >= new_size.
     47	 */
     48	u32 min_type;
     49
     50	/*
     51	 * IN: true if we don't want to do extent reference updates for any file
     52	 * extents we drop.
     53	 */
     54	bool skip_ref_updates;
     55
     56	/*
     57	 * IN: true if we need to clear the file extent range for the inode as
     58	 * we drop the file extent items.
     59	 */
     60	bool clear_extent_range;
     61};
     62
     63int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
     64			       struct btrfs_root *root,
     65			       struct btrfs_truncate_control *control);
     66int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
     67			   struct btrfs_root *root,
     68			   const char *name, int name_len,
     69			   u64 inode_objectid, u64 ref_objectid, u64 index);
     70int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
     71			   struct btrfs_root *root,
     72			   const char *name, int name_len,
     73			   u64 inode_objectid, u64 ref_objectid, u64 *index);
     74int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
     75			     struct btrfs_root *root,
     76			     struct btrfs_path *path, u64 objectid);
     77int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
     78		       *root, struct btrfs_path *path,
     79		       struct btrfs_key *location, int mod);
     80
     81struct btrfs_inode_extref *btrfs_lookup_inode_extref(
     82			  struct btrfs_trans_handle *trans,
     83			  struct btrfs_root *root,
     84			  struct btrfs_path *path,
     85			  const char *name, int name_len,
     86			  u64 inode_objectid, u64 ref_objectid, int ins_len,
     87			  int cow);
     88
     89struct btrfs_inode_ref *btrfs_find_name_in_backref(struct extent_buffer *leaf,
     90						   int slot, const char *name,
     91						   int name_len);
     92struct btrfs_inode_extref *btrfs_find_name_in_ext_backref(
     93		struct extent_buffer *leaf, int slot, u64 ref_objectid,
     94		const char *name, int name_len);
     95
     96#endif