1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_PATH_H
3 #define _LINUX_PATH_H
4
5 struct dentry;
6 struct vfsmount;
7
8 struct path {
9 struct vfsmount *mnt;
10 struct dentry *dentry;
11 } __randomize_layout;
12
13 extern void path_get(const struct path *);
14 extern void path_put(const struct path *);
15
16 static inline int path_equal(const struct path *path1, const struct path *path2)
17 {
18 return path1->mnt == path2->mnt && path1->dentry == path2->dentry;
19 }
20
21 static inline void path_put_init(struct path *path)
22 {
23 path_put(path);
24 *path = (struct path) { };
25 }
26
27 /*
28 * Cleanup macro for use with __free(path_put). Avoids dereference and
29 * copying @path unlike DEFINE_FREE(). path_put() will handle the empty
30 * path correctly just ensure @path is initialized:
31 *
32 * struct path path __free(path_put) = {};
33 */
34 #define __free_path_put path_put
35
36 #endif /* _LINUX_PATH_H */
37
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