include/linux/path.h

   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 /*
  22  * Cleanup macro for use with __free(path_put). Avoids dereference and
  23  * copying @path unlike DEFINE_FREE(). path_put() will handle the empty
  24  * path correctly just ensure @path is initialized:
  25  *
  26  * struct path path __free(path_put) = {};
  27  */
  28 #define __free_path_put path_put
  29
  30 #endif  /* _LINUX_PATH_H */