da7141fb78
This patch adds creation of /sys/fs/nilfs2/<device> group. The <device> group contains attributes that describe file system partition's details: (1) revision - show NILFS file system revision. (2) blocksize - show volume block size in bytes. (3) device_size - show volume size in bytes. (4) free_blocks - show count of free blocks on volume. (5) uuid - show volume's UUID. (6) volume_name - show volume's name. Signed-off-by: Vyacheslav Dubeyko <Vyacheslav.Dubeyko@hgst.com> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Michael L. Semon <mlsemon35@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
|
|
* sysfs.h - sysfs support declarations.
|
|
*
|
|
* Copyright (C) 2005-2014 Nippon Telegraph and Telephone Corporation.
|
|
* Copyright (C) 2014 HGST, Inc., a Western Digital Company.
|
|
*
|
|
* 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.
|
|
*
|
|
* Written by Vyacheslav Dubeyko <Vyacheslav.Dubeyko@hgst.com>
|
|
*/
|
|
|
|
#ifndef _NILFS_SYSFS_H
|
|
#define _NILFS_SYSFS_H
|
|
|
|
#include <linux/sysfs.h>
|
|
|
|
#define NILFS_ROOT_GROUP_NAME "nilfs2"
|
|
|
|
#define NILFS_COMMON_ATTR_STRUCT(name) \
|
|
struct nilfs_##name##_attr { \
|
|
struct attribute attr; \
|
|
ssize_t (*show)(struct kobject *, struct attribute *, \
|
|
char *); \
|
|
ssize_t (*store)(struct kobject *, struct attribute *, \
|
|
const char *, size_t); \
|
|
};
|
|
|
|
NILFS_COMMON_ATTR_STRUCT(feature);
|
|
|
|
#define NILFS_DEV_ATTR_STRUCT(name) \
|
|
struct nilfs_##name##_attr { \
|
|
struct attribute attr; \
|
|
ssize_t (*show)(struct nilfs_##name##_attr *, struct the_nilfs *, \
|
|
char *); \
|
|
ssize_t (*store)(struct nilfs_##name##_attr *, struct the_nilfs *, \
|
|
const char *, size_t); \
|
|
};
|
|
|
|
NILFS_DEV_ATTR_STRUCT(dev);
|
|
|
|
#define NILFS_ATTR(type, name, mode, show, store) \
|
|
static struct nilfs_##type##_attr nilfs_##type##_attr_##name = \
|
|
__ATTR(name, mode, show, store)
|
|
|
|
#define NILFS_INFO_ATTR(type, name) \
|
|
NILFS_ATTR(type, name, 0444, NULL, NULL)
|
|
#define NILFS_RO_ATTR(type, name) \
|
|
NILFS_ATTR(type, name, 0444, nilfs_##type##_##name##_show, NULL)
|
|
#define NILFS_RW_ATTR(type, name) \
|
|
NILFS_ATTR(type, name, 0644, \
|
|
nilfs_##type##_##name##_show, \
|
|
nilfs_##type##_##name##_store)
|
|
|
|
#define NILFS_FEATURE_INFO_ATTR(name) \
|
|
NILFS_INFO_ATTR(feature, name)
|
|
#define NILFS_FEATURE_RO_ATTR(name) \
|
|
NILFS_RO_ATTR(feature, name)
|
|
#define NILFS_FEATURE_RW_ATTR(name) \
|
|
NILFS_RW_ATTR(feature, name)
|
|
|
|
#define NILFS_DEV_INFO_ATTR(name) \
|
|
NILFS_INFO_ATTR(dev, name)
|
|
#define NILFS_DEV_RO_ATTR(name) \
|
|
NILFS_RO_ATTR(dev, name)
|
|
#define NILFS_DEV_RW_ATTR(name) \
|
|
NILFS_RW_ATTR(dev, name)
|
|
|
|
#define NILFS_FEATURE_ATTR_LIST(name) \
|
|
(&nilfs_feature_attr_##name.attr)
|
|
#define NILFS_DEV_ATTR_LIST(name) \
|
|
(&nilfs_dev_attr_##name.attr)
|
|
|
|
#endif /* _NILFS_SYSFS_H */
|