diff options
Diffstat (limited to 'include/linux/configfs.h')
| -rw-r--r-- | include/linux/configfs.h | 48 |
1 files changed, 18 insertions, 30 deletions
diff --git a/include/linux/configfs.h b/include/linux/configfs.h index c96709049683..ef65c75beeaa 100644 --- a/include/linux/configfs.h +++ b/include/linux/configfs.h @@ -1,23 +1,7 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* * configfs.h - definitions for the device driver filesystem * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - * * Based on sysfs: * sysfs is Copyright (C) 2001, 2002, 2003 Patrick Mochel * @@ -27,7 +11,7 @@ * * configfs Copyright (C) 2005 Oracle. All rights reserved. * - * Please read Documentation/filesystems/configfs/configfs.txt before using + * Please read Documentation/filesystems/configfs.rst before using * the configfs interface, ESPECIALLY the parts about reference counts and * item destructors. */ @@ -58,7 +42,7 @@ struct config_item { struct list_head ci_entry; struct config_item *ci_parent; struct config_group *ci_group; - struct config_item_type *ci_type; + const struct config_item_type *ci_type; struct dentry *ci_dentry; }; @@ -72,7 +56,7 @@ static inline char *config_item_name(struct config_item * item) extern void config_item_init_type_name(struct config_item *item, const char *name, - struct config_item_type *type); + const struct config_item_type *type); extern struct config_item *config_item_get(struct config_item *); extern struct config_item *config_item_get_unless_zero(struct config_item *); @@ -80,8 +64,8 @@ extern void config_item_put(struct config_item *); struct config_item_type { struct module *ct_owner; - struct configfs_item_operations *ct_item_ops; - struct configfs_group_operations *ct_group_ops; + const struct configfs_item_operations *ct_item_ops; + const struct configfs_group_operations *ct_group_ops; struct configfs_attribute **ct_attrs; struct configfs_bin_attribute **ct_bin_attrs; }; @@ -101,7 +85,7 @@ struct config_group { extern void config_group_init(struct config_group *group); extern void config_group_init_type_name(struct config_group *group, const char *name, - struct config_item_type *type); + const struct config_item_type *type); static inline struct config_group *to_config_group(struct config_item *item) { @@ -136,15 +120,19 @@ struct configfs_attribute { ssize_t (*store)(struct config_item *, const char *, size_t); }; -#define CONFIGFS_ATTR(_pfx, _name) \ +#define CONFIGFS_ATTR_PERM(_pfx, _name, _perm) \ static struct configfs_attribute _pfx##attr_##_name = { \ .ca_name = __stringify(_name), \ - .ca_mode = S_IRUGO | S_IWUSR, \ + .ca_mode = _perm, \ .ca_owner = THIS_MODULE, \ .show = _pfx##_name##_show, \ .store = _pfx##_name##_store, \ } +#define CONFIGFS_ATTR(_pfx, _name) CONFIGFS_ATTR_PERM( \ + _pfx, _name, S_IRUGO | S_IWUSR \ +) + #define CONFIGFS_ATTR_RO(_pfx, _name) \ static struct configfs_attribute _pfx##attr_##_name = { \ .ca_name = __stringify(_name), \ @@ -220,8 +208,6 @@ static struct configfs_bin_attribute _pfx##attr_##_name = { \ * group children. default_groups may coexist alongsize make_group() or * make_item(), but if the group wishes to have only default_groups * children (disallowing mkdir(2)), it need not provide either function. - * If the group has commit(), it supports pending and committed (active) - * items. */ struct configfs_item_operations { void (*release)(struct config_item *); @@ -232,9 +218,11 @@ struct configfs_item_operations { struct configfs_group_operations { struct config_item *(*make_item)(struct config_group *group, const char *name); struct config_group *(*make_group)(struct config_group *group, const char *name); - int (*commit_item)(struct config_item *item); void (*disconnect_notify)(struct config_group *group, struct config_item *item); void (*drop_item)(struct config_group *group, struct config_item *item); + bool (*is_visible)(struct config_item *item, struct configfs_attribute *attr, int n); + bool (*is_bin_visible)(struct config_item *item, struct configfs_bin_attribute *attr, + int n); }; struct configfs_subsystem { @@ -261,7 +249,7 @@ void configfs_remove_default_groups(struct config_group *group); struct config_group * configfs_register_default_group(struct config_group *parent_group, const char *name, - struct config_item_type *item_type); + const struct config_item_type *item_type); void configfs_unregister_default_group(struct config_group *group); /* These functions can sleep and can alloc with GFP_KERNEL */ |