1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _TRACEFS_INTERNAL_H
3 #define _TRACEFS_INTERNAL_H
6 TRACEFS_EVENT_INODE = BIT(1),
7 TRACEFS_EVENT_TOP_INODE = BIT(2),
10 struct tracefs_inode {
13 struct inode vfs_inode;
17 * struct eventfs_attr - cache the mode and ownership of a eventfs entry
18 * @mode: saved mode plus flags of what is saved
19 * @uid: saved uid if changed
20 * @gid: saved gid if changed
29 * struct eventfs_inode - hold the properties of the eventfs directories.
30 * @list: link list into the parent directory
31 * @entries: the array of entries representing the files in the directory
32 * @name: the name of the directory to create
33 * @children: link list into the child eventfs_inode
34 * @dentry: the dentry of the directory
35 * @d_parent: pointer to the parent's dentry
36 * @d_children: The array of dentries to represent the files when created
37 * @entry_attrs: Saved mode and ownership of the @d_children
38 * @attr: Saved mode and ownership of eventfs_inode itself
39 * @data: The private data to pass to the callbacks
40 * @is_freed: Flag set if the eventfs is on its way to be freed
41 * Note if is_freed is set, then dentry is corrupted.
42 * @nr_entries: The number of items in @entries
44 struct eventfs_inode {
45 struct list_head list;
46 const struct eventfs_entry *entries;
48 struct list_head children;
49 struct dentry *dentry; /* Check is_freed to access */
50 struct dentry *d_parent;
51 struct dentry **d_children;
52 struct eventfs_attr *entry_attrs;
53 struct eventfs_attr attr;
56 * Union - used for deletion
57 * @llist: for calling dput() if needed after RCU
58 * @rcu: eventfs_inode to delete in RCU
61 struct llist_node llist;
64 unsigned int is_freed:1;
65 unsigned int nr_entries:31;
68 static inline struct tracefs_inode *get_tracefs(const struct inode *inode)
70 return container_of(inode, struct tracefs_inode, vfs_inode);
73 struct dentry *tracefs_start_creating(const char *name, struct dentry *parent);
74 struct dentry *tracefs_end_creating(struct dentry *dentry);
75 struct dentry *tracefs_failed_creating(struct dentry *dentry);
76 struct inode *tracefs_get_inode(struct super_block *sb);
77 struct dentry *eventfs_start_creating(const char *name, struct dentry *parent);
78 struct dentry *eventfs_failed_creating(struct dentry *dentry);
79 struct dentry *eventfs_end_creating(struct dentry *dentry);
80 void eventfs_set_ei_status_free(struct tracefs_inode *ti, struct dentry *dentry);
82 #endif /* _TRACEFS_INTERNAL_H */