diff options
Diffstat (limited to 'fs/tracefs/internal.h')
| -rw-r--r-- | fs/tracefs/internal.h | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/fs/tracefs/internal.h b/fs/tracefs/internal.h index 4f2e49e2197b..ccee18ca66c7 100644 --- a/fs/tracefs/internal.h +++ b/fs/tracefs/internal.h @@ -13,6 +13,58 @@ struct tracefs_inode { struct inode vfs_inode; }; +/* + * struct eventfs_attr - cache the mode and ownership of a eventfs entry + * @mode: saved mode plus flags of what is saved + * @uid: saved uid if changed + * @gid: saved gid if changed + */ +struct eventfs_attr { + int mode; + kuid_t uid; + kgid_t gid; +}; + +/* + * struct eventfs_inode - hold the properties of the eventfs directories. + * @list: link list into the parent directory + * @entries: the array of entries representing the files in the directory + * @name: the name of the directory to create + * @children: link list into the child eventfs_inode + * @dentry: the dentry of the directory + * @d_parent: pointer to the parent's dentry + * @d_children: The array of dentries to represent the files when created + * @entry_attrs: Saved mode and ownership of the @d_children + * @attr: Saved mode and ownership of eventfs_inode itself + * @data: The private data to pass to the callbacks + * @is_freed: Flag set if the eventfs is on its way to be freed + * Note if is_freed is set, then dentry is corrupted. + * @nr_entries: The number of items in @entries + */ +struct eventfs_inode { + struct list_head list; + const struct eventfs_entry *entries; + const char *name; + struct list_head children; + struct dentry *dentry; /* Check is_freed to access */ + struct dentry *d_parent; + struct dentry **d_children; + struct eventfs_attr *entry_attrs; + struct eventfs_attr attr; + void *data; + /* + * Union - used for deletion + * @llist: for calling dput() if needed after RCU + * @rcu: eventfs_inode to delete in RCU + */ + union { + struct llist_node llist; + struct rcu_head rcu; + }; + unsigned int is_freed:1; + unsigned int nr_entries:31; +}; + static inline struct tracefs_inode *get_tracefs(const struct inode *inode) { return container_of(inode, struct tracefs_inode, vfs_inode); @@ -25,6 +77,6 @@ struct inode *tracefs_get_inode(struct super_block *sb); struct dentry *eventfs_start_creating(const char *name, struct dentry *parent); struct dentry *eventfs_failed_creating(struct dentry *dentry); struct dentry *eventfs_end_creating(struct dentry *dentry); -void eventfs_set_ef_status_free(struct tracefs_inode *ti, struct dentry *dentry); +void eventfs_set_ei_status_free(struct tracefs_inode *ti, struct dentry *dentry); #endif /* _TRACEFS_INTERNAL_H */ |