149 static int debugfs_show_options(struct seq_file *m, struct dentry *root)  in debugfs_show_options()
181 static void debugfs_release_dentry(struct dentry *dentry)  in debugfs_release_dentry()  argument
183 	void *fsd = dentry->d_fsdata;  in debugfs_release_dentry()
186 		kfree(dentry->d_fsdata);  in debugfs_release_dentry()
192 	f = (debugfs_automount_t)path->dentry->d_fsdata;  in debugfs_automount()
193 	return f(path->dentry, d_inode(path->dentry)->i_private);  in debugfs_automount()
236 static struct dentry *debug_mount(struct file_system_type *fs_type,  in debug_mount()
263 struct dentry *debugfs_lookup(const char *name, struct dentry *parent)  in debugfs_lookup()
265 	struct dentry *dentry;  in debugfs_lookup()  local
273 	dentry = lookup_one_len_unlocked(name, parent, strlen(name));  in debugfs_lookup()
274 	if (IS_ERR(dentry))  in debugfs_lookup()
276 	if (!d_really_is_positive(dentry)) {  in debugfs_lookup()
277 		dput(dentry);  in debugfs_lookup()
280 	return dentry;  in debugfs_lookup()
284 static struct dentry *start_creating(const char *name, struct dentry *parent)  in start_creating()
286 	struct dentry *dentry;  in start_creating()  local
308 	dentry = lookup_one_len(name, parent, strlen(name));  in start_creating()
309 	if (!IS_ERR(dentry) && d_really_is_positive(dentry)) {  in start_creating()
310 		dput(dentry);  in start_creating()
311 		dentry = ERR_PTR(-EEXIST);  in start_creating()
314 	if (IS_ERR(dentry)) {  in start_creating()
319 	return dentry;  in start_creating()
322 static struct dentry *failed_creating(struct dentry *dentry)  in failed_creating()  argument
324 	inode_unlock(d_inode(dentry->d_parent));  in failed_creating()
325 	dput(dentry);  in failed_creating()
330 static struct dentry *end_creating(struct dentry *dentry)  in end_creating()  argument
332 	inode_unlock(d_inode(dentry->d_parent));  in end_creating()
333 	return dentry;  in end_creating()
336 static struct dentry *__debugfs_create_file(const char *name, umode_t mode,  in __debugfs_create_file()
337 				struct dentry *parent, void *data,  in __debugfs_create_file()
341 	struct dentry *dentry;  in __debugfs_create_file()  local
347 	dentry = start_creating(name, parent);  in __debugfs_create_file()
349 	if (IS_ERR(dentry))  in __debugfs_create_file()
352 	inode = debugfs_get_inode(dentry->d_sb);  in __debugfs_create_file()
354 		return failed_creating(dentry);  in __debugfs_create_file()
360 	dentry->d_fsdata = (void *)((unsigned long)real_fops |  in __debugfs_create_file()
363 	d_instantiate(dentry, inode);  in __debugfs_create_file()
364 	fsnotify_create(d_inode(dentry->d_parent), dentry);  in __debugfs_create_file()
365 	return end_creating(dentry);  in __debugfs_create_file()
394 struct dentry *debugfs_create_file(const char *name, umode_t mode,  in debugfs_create_file()
395 				   struct dentry *parent, void *data,  in debugfs_create_file()
433 struct dentry *debugfs_create_file_unsafe(const char *name, umode_t mode,  in debugfs_create_file_unsafe()
434 				   struct dentry *parent, void *data,  in debugfs_create_file_unsafe()
472 struct dentry *debugfs_create_file_size(const char *name, umode_t mode,  in debugfs_create_file_size()
473 					struct dentry *parent, void *data,  in debugfs_create_file_size()
477 	struct dentry *de = debugfs_create_file(name, mode, parent, data, fops);  in debugfs_create_file_size()
503 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)  in debugfs_create_dir()
505 	struct dentry *dentry = start_creating(name, parent);  in debugfs_create_dir()  local
508 	if (IS_ERR(dentry))  in debugfs_create_dir()
511 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_dir()
513 		return failed_creating(dentry);  in debugfs_create_dir()
521 	d_instantiate(dentry, inode);  in debugfs_create_dir()
522 	inc_nlink(d_inode(dentry->d_parent));  in debugfs_create_dir()
523 	fsnotify_mkdir(d_inode(dentry->d_parent), dentry);  in debugfs_create_dir()
524 	return end_creating(dentry);  in debugfs_create_dir()
539 struct dentry *debugfs_create_automount(const char *name,  in debugfs_create_automount()
540 					struct dentry *parent,  in debugfs_create_automount()
544 	struct dentry *dentry = start_creating(name, parent);  in debugfs_create_automount()  local
547 	if (IS_ERR(dentry))  in debugfs_create_automount()
550 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_automount()
552 		return failed_creating(dentry);  in debugfs_create_automount()
557 	dentry->d_fsdata = (void *)f;  in debugfs_create_automount()
560 	d_instantiate(dentry, inode);  in debugfs_create_automount()
561 	inc_nlink(d_inode(dentry->d_parent));  in debugfs_create_automount()
562 	fsnotify_mkdir(d_inode(dentry->d_parent), dentry);  in debugfs_create_automount()
563 	return end_creating(dentry);  in debugfs_create_automount()
590 struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,  in debugfs_create_symlink()
593 	struct dentry *dentry;  in debugfs_create_symlink()  local
599 	dentry = start_creating(name, parent);  in debugfs_create_symlink()
600 	if (IS_ERR(dentry)) {  in debugfs_create_symlink()
605 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_symlink()
608 		return failed_creating(dentry);  in debugfs_create_symlink()
613 	d_instantiate(dentry, inode);  in debugfs_create_symlink()
614 	return end_creating(dentry);  in debugfs_create_symlink()
618 static void __debugfs_remove_file(struct dentry *dentry, struct dentry *parent)  in __debugfs_remove_file()  argument
622 	simple_unlink(d_inode(parent), dentry);  in __debugfs_remove_file()
623 	d_delete(dentry);  in __debugfs_remove_file()
632 	fsd = READ_ONCE(dentry->d_fsdata);  in __debugfs_remove_file()
639 static int __debugfs_remove(struct dentry *dentry, struct dentry *parent)  in __debugfs_remove()  argument
643 	if (simple_positive(dentry)) {  in __debugfs_remove()
644 		dget(dentry);  in __debugfs_remove()
645 		if (!d_is_reg(dentry)) {  in __debugfs_remove()
646 			if (d_is_dir(dentry))  in __debugfs_remove()
647 				ret = simple_rmdir(d_inode(parent), dentry);  in __debugfs_remove()
649 				simple_unlink(d_inode(parent), dentry);  in __debugfs_remove()
651 				d_delete(dentry);  in __debugfs_remove()
653 			__debugfs_remove_file(dentry, parent);  in __debugfs_remove()
655 		dput(dentry);  in __debugfs_remove()
674 void debugfs_remove(struct dentry *dentry)  in debugfs_remove()  argument
676 	struct dentry *parent;  in debugfs_remove()
679 	if (IS_ERR_OR_NULL(dentry))  in debugfs_remove()
682 	parent = dentry->d_parent;  in debugfs_remove()
684 	ret = __debugfs_remove(dentry, parent);  in debugfs_remove()
704 void debugfs_remove_recursive(struct dentry *dentry)  in debugfs_remove_recursive()  argument
706 	struct dentry *child, *parent;  in debugfs_remove_recursive()
708 	if (IS_ERR_OR_NULL(dentry))  in debugfs_remove_recursive()
711 	parent = dentry;  in debugfs_remove_recursive()
754 	if (child != dentry)  in debugfs_remove_recursive()
783 struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,  in debugfs_rename()
784 		struct dentry *new_dir, const char *new_name)  in debugfs_rename()
787 	struct dentry *dentry = NULL, *trap;  in debugfs_rename()  local
798 	dentry = lookup_one_len(new_name, new_dir, strlen(new_name));  in debugfs_rename()
800 	if (IS_ERR(dentry) || dentry == trap || d_really_is_positive(dentry))  in debugfs_rename()
806 			      dentry, 0);  in debugfs_rename()
811 	d_move(old_dentry, dentry);  in debugfs_rename()
817 	dput(dentry);  in debugfs_rename()
820 	if (dentry && !IS_ERR(dentry))  in debugfs_rename()
821 		dput(dentry);  in debugfs_rename()