46 			   struct dentry *dentry, struct iattr *ia)  in debugfs_setattr()  argument
55 	return simple_setattr(&init_user_ns, dentry, ia);  in debugfs_setattr()
207 static int debugfs_show_options(struct seq_file *m, struct dentry *root)  in debugfs_show_options()
238 static void debugfs_release_dentry(struct dentry *dentry)  in debugfs_release_dentry()  argument
240 	void *fsd = dentry->d_fsdata;  in debugfs_release_dentry()
243 		kfree(dentry->d_fsdata);  in debugfs_release_dentry()
249 	f = (debugfs_automount_t)path->dentry->d_fsdata;  in debugfs_automount()
250 	return f(path->dentry, d_inode(path->dentry)->i_private);  in debugfs_automount()
293 static struct dentry *debug_mount(struct file_system_type *fs_type,  in debug_mount()
323 struct dentry *debugfs_lookup(const char *name, struct dentry *parent)  in debugfs_lookup()
325 	struct dentry *dentry;  in debugfs_lookup()  local
333 	dentry = lookup_positive_unlocked(name, parent, strlen(name));  in debugfs_lookup()
334 	if (IS_ERR(dentry))  in debugfs_lookup()
336 	return dentry;  in debugfs_lookup()
340 static struct dentry *start_creating(const char *name, struct dentry *parent)  in start_creating()
342 	struct dentry *dentry;  in start_creating()  local
373 		dentry = ERR_PTR(-ENOENT);  in start_creating()
375 		dentry = lookup_one_len(name, parent, strlen(name));  in start_creating()
376 	if (!IS_ERR(dentry) && d_really_is_positive(dentry)) {  in start_creating()
377 		if (d_is_dir(dentry))  in start_creating()
383 		dput(dentry);  in start_creating()
384 		dentry = ERR_PTR(-EEXIST);  in start_creating()
387 	if (IS_ERR(dentry)) {  in start_creating()
392 	return dentry;  in start_creating()
395 static struct dentry *failed_creating(struct dentry *dentry)  in failed_creating()  argument
397 	inode_unlock(d_inode(dentry->d_parent));  in failed_creating()
398 	dput(dentry);  in failed_creating()
403 static struct dentry *end_creating(struct dentry *dentry)  in end_creating()  argument
405 	inode_unlock(d_inode(dentry->d_parent));  in end_creating()
406 	return dentry;  in end_creating()
409 static struct dentry *__debugfs_create_file(const char *name, umode_t mode,  in __debugfs_create_file()
410 				struct dentry *parent, void *data,  in __debugfs_create_file()
414 	struct dentry *dentry;  in __debugfs_create_file()  local
420 	dentry = start_creating(name, parent);  in __debugfs_create_file()
422 	if (IS_ERR(dentry))  in __debugfs_create_file()
423 		return dentry;  in __debugfs_create_file()
426 		failed_creating(dentry);  in __debugfs_create_file()
430 	inode = debugfs_get_inode(dentry->d_sb);  in __debugfs_create_file()
434 		return failed_creating(dentry);  in __debugfs_create_file()
442 	dentry->d_fsdata = (void *)((unsigned long)real_fops |  in __debugfs_create_file()
445 	d_instantiate(dentry, inode);  in __debugfs_create_file()
446 	fsnotify_create(d_inode(dentry->d_parent), dentry);  in __debugfs_create_file()
447 	return end_creating(dentry);  in __debugfs_create_file()
482 struct dentry *debugfs_create_file(const char *name, umode_t mode,  in debugfs_create_file()
483 				   struct dentry *parent, void *data,  in debugfs_create_file()
521 struct dentry *debugfs_create_file_unsafe(const char *name, umode_t mode,  in debugfs_create_file_unsafe()
522 				   struct dentry *parent, void *data,  in debugfs_create_file_unsafe()
553 			      struct dentry *parent, void *data,  in debugfs_create_file_size()
557 	struct dentry *de = debugfs_create_file(name, mode, parent, data, fops);  in debugfs_create_file_size()
588 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)  in debugfs_create_dir()
590 	struct dentry *dentry = start_creating(name, parent);  in debugfs_create_dir()  local
593 	if (IS_ERR(dentry))  in debugfs_create_dir()
594 		return dentry;  in debugfs_create_dir()
597 		failed_creating(dentry);  in debugfs_create_dir()
601 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_dir()
605 		return failed_creating(dentry);  in debugfs_create_dir()
614 	d_instantiate(dentry, inode);  in debugfs_create_dir()
615 	inc_nlink(d_inode(dentry->d_parent));  in debugfs_create_dir()
616 	fsnotify_mkdir(d_inode(dentry->d_parent), dentry);  in debugfs_create_dir()
617 	return end_creating(dentry);  in debugfs_create_dir()
632 struct dentry *debugfs_create_automount(const char *name,  in debugfs_create_automount()
633 					struct dentry *parent,  in debugfs_create_automount()
637 	struct dentry *dentry = start_creating(name, parent);  in debugfs_create_automount()  local
640 	if (IS_ERR(dentry))  in debugfs_create_automount()
641 		return dentry;  in debugfs_create_automount()
644 		failed_creating(dentry);  in debugfs_create_automount()
648 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_automount()
652 		return failed_creating(dentry);  in debugfs_create_automount()
658 	dentry->d_fsdata = (void *)f;  in debugfs_create_automount()
661 	d_instantiate(dentry, inode);  in debugfs_create_automount()
662 	inc_nlink(d_inode(dentry->d_parent));  in debugfs_create_automount()
663 	fsnotify_mkdir(d_inode(dentry->d_parent), dentry);  in debugfs_create_automount()
664 	return end_creating(dentry);  in debugfs_create_automount()
691 struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,  in debugfs_create_symlink()
694 	struct dentry *dentry;  in debugfs_create_symlink()  local
700 	dentry = start_creating(name, parent);  in debugfs_create_symlink()
701 	if (IS_ERR(dentry)) {  in debugfs_create_symlink()
703 		return dentry;  in debugfs_create_symlink()
706 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_symlink()
711 		return failed_creating(dentry);  in debugfs_create_symlink()
716 	d_instantiate(dentry, inode);  in debugfs_create_symlink()
717 	return end_creating(dentry);  in debugfs_create_symlink()
721 static void __debugfs_file_removed(struct dentry *dentry)  in __debugfs_file_removed()  argument
732 	fsd = READ_ONCE(dentry->d_fsdata);  in __debugfs_file_removed()
739 static void remove_one(struct dentry *victim)  in remove_one()
759 void debugfs_remove(struct dentry *dentry)  in debugfs_remove()  argument
761 	if (IS_ERR_OR_NULL(dentry))  in debugfs_remove()
765 	simple_recursive_removal(dentry, remove_one);  in debugfs_remove()
779 void debugfs_lookup_and_remove(const char *name, struct dentry *parent)  in debugfs_lookup_and_remove()
781 	struct dentry *dentry;  in debugfs_lookup_and_remove()  local
783 	dentry = debugfs_lookup(name, parent);  in debugfs_lookup_and_remove()
784 	if (!dentry)  in debugfs_lookup_and_remove()
787 	debugfs_remove(dentry);  in debugfs_lookup_and_remove()
788 	dput(dentry);  in debugfs_lookup_and_remove()
811 struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,  in debugfs_rename()
812 		struct dentry *new_dir, const char *new_name)  in debugfs_rename()
815 	struct dentry *dentry = NULL, *trap;  in debugfs_rename()  local
833 	dentry = lookup_one_len(new_name, new_dir, strlen(new_name));  in debugfs_rename()
835 	if (IS_ERR(dentry) || dentry == trap || d_really_is_positive(dentry))  in debugfs_rename()
841 			      d_inode(new_dir), dentry, 0);  in debugfs_rename()
846 	d_move(old_dentry, dentry);  in debugfs_rename()
852 	dput(dentry);  in debugfs_rename()
855 	if (dentry && !IS_ERR(dentry))  in debugfs_rename()
856 		dput(dentry);  in debugfs_rename()
858 	if (IS_ERR(dentry))  in debugfs_rename()
859 		return dentry;  in debugfs_rename()