1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Functions to handle the cached directory entries
12 struct cached_dirent {
13 struct list_head entry;
18 struct cifs_fattr fattr;
21 struct cached_dirents {
24 struct dir_context *ctx; /*
25 * Only used to make sure we only take entries
26 * from a single context. Never dereferenced.
28 struct mutex de_mutex;
29 int pos; /* Expected ctx->pos */
30 struct list_head entries;
34 bool is_valid:1; /* Do we have a useable root fid */
35 bool file_all_info_is_valid:1;
37 unsigned long time; /* jiffies of when lease was taken */
40 struct mutex fid_mutex;
41 struct cifs_tcon *tcon;
42 struct dentry *dentry;
43 struct work_struct lease_break;
44 struct smb2_file_all_info file_all_info;
45 struct cached_dirents dirents;
48 extern struct cached_fid *init_cached_dir(void);
49 extern void free_cached_dir(struct cifs_tcon *tcon);
50 extern int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
52 struct cifs_sb_info *cifs_sb,
53 bool lookup_only, struct cached_fid **cfid);
54 extern int open_cached_dir_by_dentry(struct cifs_tcon *tcon,
55 struct dentry *dentry,
56 struct cached_fid **cfid);
57 extern void close_cached_dir(struct cached_fid *cfid);
58 extern void close_cached_dir_lease(struct cached_fid *cfid);
59 extern void close_cached_dir_lease_locked(struct cached_fid *cfid);
60 extern void close_all_cached_dirs(struct cifs_sb_info *cifs_sb);
61 extern void invalidate_all_cached_dirs(struct cifs_tcon *tcon);
62 extern int cached_dir_lease_break(struct cifs_tcon *tcon, __u8 lease_key[16]);
64 #endif /* _CACHED_DIR_H */