150 static int debugfs_show_options(struct seq_file *m, struct dentry *root)  in debugfs_show_options()
185 	f = (struct vfsmount *(*)(void *))path->dentry->d_fsdata;  in debugfs_automount()
186 	return f(d_inode(path->dentry)->i_private);  in debugfs_automount()
230 static struct dentry *debug_mount(struct file_system_type *fs_type,  in debug_mount()
245 static struct dentry *start_creating(const char *name, struct dentry *parent)  in start_creating()
247 	struct dentry *dentry;  in start_creating()  local
269 	dentry = lookup_one_len(name, parent, strlen(name));  in start_creating()
270 	if (!IS_ERR(dentry) && d_really_is_positive(dentry)) {  in start_creating()
271 		dput(dentry);  in start_creating()
272 		dentry = ERR_PTR(-EEXIST);  in start_creating()
275 	if (IS_ERR(dentry)) {  in start_creating()
280 	return dentry;  in start_creating()
283 static struct dentry *failed_creating(struct dentry *dentry)  in failed_creating()  argument
285 	mutex_unlock(&d_inode(dentry->d_parent)->i_mutex);  in failed_creating()
286 	dput(dentry);  in failed_creating()
291 static struct dentry *end_creating(struct dentry *dentry)  in end_creating()  argument
293 	mutex_unlock(&d_inode(dentry->d_parent)->i_mutex);  in end_creating()
294 	return dentry;  in end_creating()
323 struct dentry *debugfs_create_file(const char *name, umode_t mode,  in debugfs_create_file()
324 				   struct dentry *parent, void *data,  in debugfs_create_file()
327 	struct dentry *dentry;  in debugfs_create_file()  local
333 	dentry = start_creating(name, parent);  in debugfs_create_file()
335 	if (IS_ERR(dentry))  in debugfs_create_file()
338 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_file()
340 		return failed_creating(dentry);  in debugfs_create_file()
345 	d_instantiate(dentry, inode);  in debugfs_create_file()
346 	fsnotify_create(d_inode(dentry->d_parent), dentry);  in debugfs_create_file()
347 	return end_creating(dentry);  in debugfs_create_file()
378 struct dentry *debugfs_create_file_size(const char *name, umode_t mode,  in debugfs_create_file_size()
379 					struct dentry *parent, void *data,  in debugfs_create_file_size()
383 	struct dentry *de = debugfs_create_file(name, mode, parent, data, fops);  in debugfs_create_file_size()
409 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)  in debugfs_create_dir()
411 	struct dentry *dentry = start_creating(name, parent);  in debugfs_create_dir()  local
414 	if (IS_ERR(dentry))  in debugfs_create_dir()
417 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_dir()
419 		return failed_creating(dentry);  in debugfs_create_dir()
427 	d_instantiate(dentry, inode);  in debugfs_create_dir()
428 	inc_nlink(d_inode(dentry->d_parent));  in debugfs_create_dir()
429 	fsnotify_mkdir(d_inode(dentry->d_parent), dentry);  in debugfs_create_dir()
430 	return end_creating(dentry);  in debugfs_create_dir()
445 struct dentry *debugfs_create_automount(const char *name,  in debugfs_create_automount()
446 					struct dentry *parent,  in debugfs_create_automount()
450 	struct dentry *dentry = start_creating(name, parent);  in debugfs_create_automount()  local
453 	if (IS_ERR(dentry))  in debugfs_create_automount()
456 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_automount()
458 		return failed_creating(dentry);  in debugfs_create_automount()
463 	dentry->d_fsdata = (void *)f;  in debugfs_create_automount()
464 	d_instantiate(dentry, inode);  in debugfs_create_automount()
465 	return end_creating(dentry);  in debugfs_create_automount()
492 struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,  in debugfs_create_symlink()
495 	struct dentry *dentry;  in debugfs_create_symlink()  local
501 	dentry = start_creating(name, parent);  in debugfs_create_symlink()
502 	if (IS_ERR(dentry)) {  in debugfs_create_symlink()
507 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_symlink()
510 		return failed_creating(dentry);  in debugfs_create_symlink()
515 	d_instantiate(dentry, inode);  in debugfs_create_symlink()
516 	return end_creating(dentry);  in debugfs_create_symlink()
520 static int __debugfs_remove(struct dentry *dentry, struct dentry *parent)  in __debugfs_remove()  argument
524 	if (simple_positive(dentry)) {  in __debugfs_remove()
525 		dget(dentry);  in __debugfs_remove()
526 		if (d_is_dir(dentry))  in __debugfs_remove()
527 			ret = simple_rmdir(d_inode(parent), dentry);  in __debugfs_remove()
529 			simple_unlink(d_inode(parent), dentry);  in __debugfs_remove()
531 			d_delete(dentry);  in __debugfs_remove()
532 		dput(dentry);  in __debugfs_remove()
551 void debugfs_remove(struct dentry *dentry)  in debugfs_remove()  argument
553 	struct dentry *parent;  in debugfs_remove()
556 	if (IS_ERR_OR_NULL(dentry))  in debugfs_remove()
559 	parent = dentry->d_parent;  in debugfs_remove()
564 	ret = __debugfs_remove(dentry, parent);  in debugfs_remove()
584 void debugfs_remove_recursive(struct dentry *dentry)  in debugfs_remove_recursive()  argument
586 	struct dentry *child, *parent;  in debugfs_remove_recursive()
588 	if (IS_ERR_OR_NULL(dentry))  in debugfs_remove_recursive()
591 	parent = dentry->d_parent;  in debugfs_remove_recursive()
595 	parent = dentry;  in debugfs_remove_recursive()
638 	if (child != dentry)  in debugfs_remove_recursive()
667 struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,  in debugfs_rename()
668 		struct dentry *new_dir, const char *new_name)  in debugfs_rename()
671 	struct dentry *dentry = NULL, *trap;  in debugfs_rename()  local
682 	dentry = lookup_one_len(new_name, new_dir, strlen(new_name));  in debugfs_rename()
684 	if (IS_ERR(dentry) || dentry == trap || d_really_is_positive(dentry))  in debugfs_rename()
690 		dentry);  in debugfs_rename()
695 	d_move(old_dentry, dentry);  in debugfs_rename()
701 	dput(dentry);  in debugfs_rename()
704 	if (dentry && !IS_ERR(dentry))  in debugfs_rename()
705 		dput(dentry);  in debugfs_rename()