150 static int debugfs_show_options(struct seq_file *m, struct dentry *root)  in debugfs_show_options()
190 	f = (struct vfsmount *(*)(void *))path->dentry->d_fsdata;  in debugfs_automount()
191 	return f(d_inode(path->dentry)->i_private);  in debugfs_automount()
235 static struct dentry *debug_mount(struct file_system_type *fs_type,  in debug_mount()
250 static struct dentry *start_creating(const char *name, struct dentry *parent)  in start_creating()
252 	struct dentry *dentry;  in start_creating()  local
274 	dentry = lookup_one_len(name, parent, strlen(name));  in start_creating()
275 	if (!IS_ERR(dentry) && d_really_is_positive(dentry)) {  in start_creating()
276 		dput(dentry);  in start_creating()
277 		dentry = ERR_PTR(-EEXIST);  in start_creating()
280 	if (IS_ERR(dentry)) {  in start_creating()
285 	return dentry;  in start_creating()
288 static struct dentry *failed_creating(struct dentry *dentry)  in failed_creating()  argument
290 	mutex_unlock(&d_inode(dentry->d_parent)->i_mutex);  in failed_creating()
291 	dput(dentry);  in failed_creating()
296 static struct dentry *end_creating(struct dentry *dentry)  in end_creating()  argument
298 	mutex_unlock(&d_inode(dentry->d_parent)->i_mutex);  in end_creating()
299 	return dentry;  in end_creating()
328 struct dentry *debugfs_create_file(const char *name, umode_t mode,  in debugfs_create_file()
329 				   struct dentry *parent, void *data,  in debugfs_create_file()
332 	struct dentry *dentry;  in debugfs_create_file()  local
338 	dentry = start_creating(name, parent);  in debugfs_create_file()
340 	if (IS_ERR(dentry))  in debugfs_create_file()
343 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_file()
345 		return failed_creating(dentry);  in debugfs_create_file()
350 	d_instantiate(dentry, inode);  in debugfs_create_file()
351 	fsnotify_create(d_inode(dentry->d_parent), dentry);  in debugfs_create_file()
352 	return end_creating(dentry);  in debugfs_create_file()
383 struct dentry *debugfs_create_file_size(const char *name, umode_t mode,  in debugfs_create_file_size()
384 					struct dentry *parent, void *data,  in debugfs_create_file_size()
388 	struct dentry *de = debugfs_create_file(name, mode, parent, data, fops);  in debugfs_create_file_size()
414 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)  in debugfs_create_dir()
416 	struct dentry *dentry = start_creating(name, parent);  in debugfs_create_dir()  local
419 	if (IS_ERR(dentry))  in debugfs_create_dir()
422 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_dir()
424 		return failed_creating(dentry);  in debugfs_create_dir()
432 	d_instantiate(dentry, inode);  in debugfs_create_dir()
433 	inc_nlink(d_inode(dentry->d_parent));  in debugfs_create_dir()
434 	fsnotify_mkdir(d_inode(dentry->d_parent), dentry);  in debugfs_create_dir()
435 	return end_creating(dentry);  in debugfs_create_dir()
450 struct dentry *debugfs_create_automount(const char *name,  in debugfs_create_automount()
451 					struct dentry *parent,  in debugfs_create_automount()
455 	struct dentry *dentry = start_creating(name, parent);  in debugfs_create_automount()  local
458 	if (IS_ERR(dentry))  in debugfs_create_automount()
461 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_automount()
463 		return failed_creating(dentry);  in debugfs_create_automount()
468 	dentry->d_fsdata = (void *)f;  in debugfs_create_automount()
469 	d_instantiate(dentry, inode);  in debugfs_create_automount()
470 	return end_creating(dentry);  in debugfs_create_automount()
497 struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,  in debugfs_create_symlink()
500 	struct dentry *dentry;  in debugfs_create_symlink()  local
506 	dentry = start_creating(name, parent);  in debugfs_create_symlink()
507 	if (IS_ERR(dentry)) {  in debugfs_create_symlink()
512 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_symlink()
515 		return failed_creating(dentry);  in debugfs_create_symlink()
520 	d_instantiate(dentry, inode);  in debugfs_create_symlink()
521 	return end_creating(dentry);  in debugfs_create_symlink()
525 static int __debugfs_remove(struct dentry *dentry, struct dentry *parent)  in __debugfs_remove()  argument
529 	if (simple_positive(dentry)) {  in __debugfs_remove()
530 		dget(dentry);  in __debugfs_remove()
531 		if (d_is_dir(dentry))  in __debugfs_remove()
532 			ret = simple_rmdir(d_inode(parent), dentry);  in __debugfs_remove()
534 			simple_unlink(d_inode(parent), dentry);  in __debugfs_remove()
536 			d_delete(dentry);  in __debugfs_remove()
537 		dput(dentry);  in __debugfs_remove()
556 void debugfs_remove(struct dentry *dentry)  in debugfs_remove()  argument
558 	struct dentry *parent;  in debugfs_remove()
561 	if (IS_ERR_OR_NULL(dentry))  in debugfs_remove()
564 	parent = dentry->d_parent;  in debugfs_remove()
569 	ret = __debugfs_remove(dentry, parent);  in debugfs_remove()
589 void debugfs_remove_recursive(struct dentry *dentry)  in debugfs_remove_recursive()  argument
591 	struct dentry *child, *parent;  in debugfs_remove_recursive()
593 	if (IS_ERR_OR_NULL(dentry))  in debugfs_remove_recursive()
596 	parent = dentry->d_parent;  in debugfs_remove_recursive()
600 	parent = dentry;  in debugfs_remove_recursive()
643 	if (child != dentry)  in debugfs_remove_recursive()
672 struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,  in debugfs_rename()
673 		struct dentry *new_dir, const char *new_name)  in debugfs_rename()
676 	struct dentry *dentry = NULL, *trap;  in debugfs_rename()  local
694 	dentry = lookup_one_len(new_name, new_dir, strlen(new_name));  in debugfs_rename()
696 	if (IS_ERR(dentry) || dentry == trap || d_really_is_positive(dentry))  in debugfs_rename()
702 		dentry);  in debugfs_rename()
707 	d_move(old_dentry, dentry);  in debugfs_rename()
713 	dput(dentry);  in debugfs_rename()
716 	if (dentry && !IS_ERR(dentry))  in debugfs_rename()
717 		dput(dentry);  in debugfs_rename()