45 static void configfs_d_iput(struct dentry * dentry,  in configfs_d_iput()  argument
48 	struct configfs_dirent *sd = dentry->d_fsdata;  in configfs_d_iput()
59 		if (sd->s_dentry == dentry)  in configfs_d_iput()
243 			 struct dentry * dentry, void * element,  in configfs_make_dirent()  argument
253 	sd->s_dentry = dentry;  in configfs_make_dirent()
254 	if (dentry)  in configfs_make_dirent()
255 		dentry->d_fsdata = configfs_get(sd);  in configfs_make_dirent()
260 static void configfs_remove_dirent(struct dentry *dentry)  in configfs_remove_dirent()  argument
262 	struct configfs_dirent *sd = dentry->d_fsdata;  in configfs_remove_dirent()
282 static int configfs_create_dir(struct config_item *item, struct dentry *dentry,  in configfs_create_dir()  argument
287 	struct dentry *p = dentry->d_parent;  in configfs_create_dir()
292 	error = configfs_dirent_exists(p->d_fsdata, dentry->d_name.name);  in configfs_create_dir()
296 	error = configfs_make_dirent(p->d_fsdata, dentry, item, mode,  in configfs_create_dir()
302 	configfs_set_dir_dirent_depth(p->d_fsdata, dentry->d_fsdata);  in configfs_create_dir()
303 	inode = configfs_create(dentry, mode);  in configfs_create_dir()
311 	d_instantiate(dentry, inode);  in configfs_create_dir()
313 	dget(dentry);  /* pin directory dentries in core */  in configfs_create_dir()
315 	item->ci_dentry = dentry;  in configfs_create_dir()
319 	configfs_remove_dirent(dentry);  in configfs_create_dir()
361 int configfs_create_link(struct configfs_dirent *target, struct dentry *parent,  in configfs_create_link()
362 		struct dentry *dentry, char *body)  in configfs_create_link()  argument
369 	err = configfs_make_dirent(p, dentry, target, mode, CONFIGFS_ITEM_LINK,  in configfs_create_link()
374 	inode = configfs_create(dentry, mode);  in configfs_create_link()
380 	d_instantiate(dentry, inode);  in configfs_create_link()
381 	dget(dentry);  /* pin link dentries in core */  in configfs_create_link()
385 	configfs_remove_dirent(dentry);  in configfs_create_link()
389 static void remove_dir(struct dentry * d)  in remove_dir()
391 	struct dentry * parent = dget(d->d_parent);  in remove_dir()
416 	struct dentry * dentry = dget(item->ci_dentry);  in configfs_remove_dir()  local
418 	if (!dentry)  in configfs_remove_dir()
421 	remove_dir(dentry);  in configfs_remove_dir()
425 	dput(dentry);  in configfs_remove_dir()
428 static struct dentry * configfs_lookup(struct inode *dir,  in configfs_lookup()
429 				       struct dentry *dentry,  in configfs_lookup()  argument
432 	struct configfs_dirent * parent_sd = dentry->d_parent->d_fsdata;  in configfs_lookup()
436 	if (dentry->d_name.len > NAME_MAX)  in configfs_lookup()
453 		    !strcmp(configfs_get_name(sd), dentry->d_name.name)) {  in configfs_lookup()
457 			dentry->d_fsdata = configfs_get(sd);  in configfs_lookup()
458 			sd->s_dentry = dentry;  in configfs_lookup()
461 			inode = configfs_create(dentry, mode);  in configfs_lookup()
478 	d_add(dentry, inode);  in configfs_lookup()
490 static int configfs_detach_prep(struct dentry *dentry, struct dentry **wait)  in configfs_detach_prep()  argument
492 	struct configfs_dirent *parent_sd = dentry->d_fsdata;  in configfs_detach_prep()
537 static void configfs_detach_rollback(struct dentry *dentry)  in configfs_detach_rollback()  argument
539 	struct configfs_dirent *parent_sd = dentry->d_fsdata;  in configfs_detach_rollback()
551 	struct dentry * dentry = dget(item->ci_dentry);  in detach_attrs()  local
555 	if (!dentry)  in detach_attrs()
559 		 dentry->d_name.name);  in detach_attrs()
561 	parent_sd = dentry->d_fsdata;  in detach_attrs()
568 		configfs_drop_dentry(sd, dentry);  in detach_attrs()
575 	dput(dentry);  in detach_attrs()
610 				 struct dentry *dentry,
616 	struct dentry * dentry = dget(group->cg_item.ci_dentry);  in detach_groups()  local
617 	struct dentry *child;  in detach_groups()
621 	if (!dentry)  in detach_groups()
624 	parent_sd = dentry->d_fsdata;  in detach_groups()
647 	dput(dentry);  in detach_groups()
665 	struct dentry *child, *parent = parent_group->cg_item.ci_dentry;  in create_default_group()
811 				struct dentry *dentry,  in configfs_attach_item()  argument
816 	ret = configfs_create_dir(item, dentry, frag);  in configfs_attach_item()
825 			inode_lock(d_inode(dentry));  in configfs_attach_item()
827 			d_inode(dentry)->i_flags |= S_DEAD;  in configfs_attach_item()
828 			dont_mount(dentry);  in configfs_attach_item()
829 			inode_unlock(d_inode(dentry));  in configfs_attach_item()
830 			d_delete(dentry);  in configfs_attach_item()
846 				 struct dentry *dentry,  in configfs_attach_group()  argument
852 	ret = configfs_attach_item(parent_item, item, dentry, frag);  in configfs_attach_group()
854 		sd = dentry->d_fsdata;  in configfs_attach_group()
866 		inode_lock_nested(d_inode(dentry), I_MUTEX_CHILD);  in configfs_attach_group()
871 			d_inode(dentry)->i_flags |= S_DEAD;  in configfs_attach_group()
872 			dont_mount(dentry);  in configfs_attach_group()
875 		inode_unlock(d_inode(dentry));  in configfs_attach_group()
877 			d_delete(dentry);  in configfs_attach_group()
1032 static int configfs_depend_prep(struct dentry *origin,  in configfs_depend_prep()
1062 static int configfs_do_depend_item(struct dentry *subsys_dentry,  in configfs_do_depend_item()
1112 	struct dentry *root;  in configfs_depend_item()
1253 			  struct dentry *dentry, umode_t mode)  in configfs_mkdir()  argument
1267 	sd = dentry->d_parent->d_fsdata;  in configfs_mkdir()
1290 	parent_item = configfs_get_config_item(dentry->d_parent);  in configfs_mkdir()
1317 	name = kmalloc(dentry->d_name.len + 1, GFP_KERNEL);  in configfs_mkdir()
1323 	snprintf(name, dentry->d_name.len + 1, "%s", dentry->d_name.name);  in configfs_mkdir()
1391 		ret = configfs_attach_group(parent_item, item, dentry, frag);  in configfs_mkdir()
1393 		ret = configfs_attach_item(parent_item, item, dentry, frag);  in configfs_mkdir()
1398 		configfs_dir_set_ready(dentry->d_fsdata);  in configfs_mkdir()
1436 static int configfs_rmdir(struct inode *dir, struct dentry *dentry)  in configfs_rmdir()  argument
1446 	sd = dentry->d_fsdata;  in configfs_rmdir()
1451 	parent_item = configfs_get_config_item(dentry->d_parent);  in configfs_rmdir()
1469 		struct dentry *wait;  in configfs_rmdir()
1480 			ret = configfs_detach_prep(dentry, &wait);  in configfs_rmdir()
1482 				configfs_detach_rollback(dentry);  in configfs_rmdir()
1503 		configfs_detach_rollback(dentry);  in configfs_rmdir()
1512 	item = configfs_get_config_item(dentry);  in configfs_rmdir()
1562 	struct dentry * dentry = file->f_path.dentry;  in configfs_dir_open()  local
1563 	struct configfs_dirent * parent_sd = dentry->d_fsdata;  in configfs_dir_open()
1566 	inode_lock(d_inode(dentry));  in configfs_dir_open()
1579 	inode_unlock(d_inode(dentry));  in configfs_dir_open()
1586 	struct dentry * dentry = file->f_path.dentry;  in configfs_dir_close()  local
1589 	inode_lock(d_inode(dentry));  in configfs_dir_close()
1593 	inode_unlock(d_inode(dentry));  in configfs_dir_close()
1608 	struct dentry *dentry = file->f_path.dentry;  in configfs_readdir()  local
1609 	struct super_block *sb = dentry->d_sb;  in configfs_readdir()
1610 	struct configfs_dirent * parent_sd = dentry->d_fsdata;  in configfs_readdir()
1643 		dentry = next->s_dentry;  in configfs_readdir()
1644 		if (dentry)  in configfs_readdir()
1645 			inode = d_inode(dentry);  in configfs_readdir()
1669 	struct dentry * dentry = file->f_path.dentry;  in configfs_dir_lseek()  local
1685 			struct configfs_dirent *sd = dentry->d_fsdata;  in configfs_dir_lseek()
1730 	struct dentry *parent;  in configfs_register_group()
1774 	struct dentry *dentry = group->cg_item.ci_dentry;  in configfs_unregister_group()  local
1775 	struct dentry *parent = group->cg_item.ci_parent->ci_dentry;  in configfs_unregister_group()
1776 	struct configfs_dirent *sd = dentry->d_fsdata;  in configfs_unregister_group()
1785 	configfs_detach_prep(dentry, NULL);  in configfs_unregister_group()
1789 	d_inode(dentry)->i_flags |= S_DEAD;  in configfs_unregister_group()
1790 	dont_mount(dentry);  in configfs_unregister_group()
1791 	d_drop(dentry);  in configfs_unregister_group()
1792 	fsnotify_rmdir(d_inode(parent), dentry);  in configfs_unregister_group()
1795 	dput(dentry);  in configfs_unregister_group()
1851 	struct dentry *dentry;  in configfs_register_subsystem()  local
1852 	struct dentry *root;  in configfs_register_subsystem()
1877 	dentry = d_alloc_name(root, group->cg_item.ci_name);  in configfs_register_subsystem()
1878 	if (dentry) {  in configfs_register_subsystem()
1879 		d_add(dentry, NULL);  in configfs_register_subsystem()
1882 					    dentry, frag);  in configfs_register_subsystem()
1884 			BUG_ON(d_inode(dentry));  in configfs_register_subsystem()
1885 			d_drop(dentry);  in configfs_register_subsystem()
1886 			dput(dentry);  in configfs_register_subsystem()
1889 			configfs_dir_set_ready(dentry->d_fsdata);  in configfs_register_subsystem()
1910 	struct dentry *dentry = group->cg_item.ci_dentry;  in configfs_unregister_subsystem()  local
1911 	struct dentry *root = dentry->d_sb->s_root;  in configfs_unregister_subsystem()
1912 	struct configfs_dirent *sd = dentry->d_fsdata;  in configfs_unregister_subsystem()
1915 	if (dentry->d_parent != root) {  in configfs_unregister_subsystem()
1926 	inode_lock_nested(d_inode(dentry), I_MUTEX_CHILD);  in configfs_unregister_subsystem()
1929 	if (configfs_detach_prep(dentry, NULL)) {  in configfs_unregister_subsystem()
1935 	d_inode(dentry)->i_flags |= S_DEAD;  in configfs_unregister_subsystem()
1936 	dont_mount(dentry);  in configfs_unregister_subsystem()
1937 	inode_unlock(d_inode(dentry));  in configfs_unregister_subsystem()
1939 	d_drop(dentry);  in configfs_unregister_subsystem()
1940 	fsnotify_rmdir(d_inode(root), dentry);  in configfs_unregister_subsystem()
1944 	dput(dentry);  in configfs_unregister_subsystem()