projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| ba37ff75 AK |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _TRACEFS_INTERNAL_H | |
| 3 | #define _TRACEFS_INTERNAL_H | |
| 4 | ||
| c1504e51 | 5 | enum { |
| 9879e5e1 SRG |
6 | TRACEFS_EVENT_INODE = BIT(1), |
| 7 | TRACEFS_EVENT_TOP_INODE = BIT(2), | |
| 8186fff7 SRG |
8 | TRACEFS_GID_PERM_SET = BIT(3), |
| 9 | TRACEFS_UID_PERM_SET = BIT(4), | |
| 10 | TRACEFS_INSTANCE_INODE = BIT(5), | |
| c1504e51 AK |
11 | }; |
| 12 | ||
| ba37ff75 | 13 | struct tracefs_inode { |
| d81786f5 SRG |
14 | struct inode vfs_inode; |
| 15 | /* The below gets initialized with memset_after(ti, 0, vfs_inode) */ | |
| ba37ff75 AK |
16 | unsigned long flags; |
| 17 | void *private; | |
| ba37ff75 AK |
18 | }; |
| 19 | ||
| 28e12c09 SRG |
20 | /* |
| 21 | * struct eventfs_attr - cache the mode and ownership of a eventfs entry | |
| 22 | * @mode: saved mode plus flags of what is saved | |
| 23 | * @uid: saved uid if changed | |
| 24 | * @gid: saved gid if changed | |
| 25 | */ | |
| 26 | struct eventfs_attr { | |
| 27 | int mode; | |
| 28 | kuid_t uid; | |
| 29 | kgid_t gid; | |
| 30 | }; | |
| 31 | ||
| 5790b1fb SRG |
32 | /* |
| 33 | * struct eventfs_inode - hold the properties of the eventfs directories. | |
| 34 | * @list: link list into the parent directory | |
| 264424df SRG |
35 | * @rcu: Union with @list for freeing |
| 36 | * @children: link list into the child eventfs_inode | |
| 5790b1fb SRG |
37 | * @entries: the array of entries representing the files in the directory |
| 38 | * @name: the name of the directory to create | |
| 43aa6f97 | 39 | * @events_dir: the dentry of the events directory |
| 28e12c09 | 40 | * @entry_attrs: Saved mode and ownership of the @d_children |
| 5790b1fb | 41 | * @data: The private data to pass to the callbacks |
| 264424df | 42 | * @attr: Saved mode and ownership of eventfs_inode itself |
| f2f49637 | 43 | * @is_freed: Flag set if the eventfs is on its way to be freed |
| 77a06c33 | 44 | * Note if is_freed is set, then dentry is corrupted. |
| 264424df | 45 | * @is_events: Flag set for only the top level "events" directory |
| 5790b1fb | 46 | * @nr_entries: The number of items in @entries |
| 264424df | 47 | * @ino: The saved inode number |
| 5790b1fb SRG |
48 | */ |
| 49 | struct eventfs_inode { | |
| 264424df SRG |
50 | union { |
| 51 | struct list_head list; | |
| 52 | struct rcu_head rcu; | |
| 53 | }; | |
| 54 | struct list_head children; | |
| 5790b1fb SRG |
55 | const struct eventfs_entry *entries; |
| 56 | const char *name; | |
| 43aa6f97 | 57 | struct dentry *events_dir; |
| 28e12c09 | 58 | struct eventfs_attr *entry_attrs; |
| 5790b1fb | 59 | void *data; |
| 264424df SRG |
60 | struct eventfs_attr attr; |
| 61 | struct kref kref; | |
| 834bf76a SRG |
62 | unsigned int is_freed:1; |
| 63 | unsigned int is_events:1; | |
| 64 | unsigned int nr_entries:30; | |
| 65 | unsigned int ino; | |
| 5790b1fb SRG |
66 | }; |
| 67 | ||
| ba37ff75 AK |
68 | static inline struct tracefs_inode *get_tracefs(const struct inode *inode) |
| 69 | { | |
| 70 | return container_of(inode, struct tracefs_inode, vfs_inode); | |
| 71 | } | |
| 2c6b6b10 AK |
72 | |
| 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); | |
| 8dce06e9 LT |
77 | |
| 78 | void eventfs_d_release(struct dentry *dentry); | |
| 63940449 | 79 | |
| ba37ff75 | 80 | #endif /* _TRACEFS_INTERNAL_H */ |