mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2025-01-17 02:36:21 +00:00
ff2c570ef7
Add a simple cleanup helper so we can cleanup struct path easily. No need for any extra machinery. Avoid DEFINE_FREE() as it causes a local copy of struct path to be used. Just rely on path_put() directly called from a cleanup helper. Link: https://lore.kernel.org/r/20240607-vfs-listmount-reverse-v1-2-7877a2bfa5e5@kernel.org Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
37 lines
854 B
C
37 lines
854 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_PATH_H
|
|
#define _LINUX_PATH_H
|
|
|
|
struct dentry;
|
|
struct vfsmount;
|
|
|
|
struct path {
|
|
struct vfsmount *mnt;
|
|
struct dentry *dentry;
|
|
} __randomize_layout;
|
|
|
|
extern void path_get(const struct path *);
|
|
extern void path_put(const struct path *);
|
|
|
|
static inline int path_equal(const struct path *path1, const struct path *path2)
|
|
{
|
|
return path1->mnt == path2->mnt && path1->dentry == path2->dentry;
|
|
}
|
|
|
|
static inline void path_put_init(struct path *path)
|
|
{
|
|
path_put(path);
|
|
*path = (struct path) { };
|
|
}
|
|
|
|
/*
|
|
* Cleanup macro for use with __free(path_put). Avoids dereference and
|
|
* copying @path unlike DEFINE_FREE(). path_put() will handle the empty
|
|
* path correctly just ensure @path is initialized:
|
|
*
|
|
* struct path path __free(path_put) = {};
|
|
*/
|
|
#define __free_path_put path_put
|
|
|
|
#endif /* _LINUX_PATH_H */
|