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Commit 871ea53e authored by Oliver Schinagl's avatar Oliver Schinagl Committed by TARKZiM
Browse files

sysfs: add more helper macro's for (bin_)attribute(_groups) 



With the recent changes to sysfs there's various helper macro's.
However there's no RW, RO BIN_ helper macro's. This patch adds them.

Signed-off-by: default avatarOliver Schinagl <oliver@schinagl.nl>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: I493c48b29c4a1d74d35c3a918ac97e958e288e04
parent ba3405d4

include/linux/sysfs.h

+38 −13
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/list.h>

#include <linux/lockdep.h>

#include <linux/kobject_ns.h>

#include <linux/stat.h>

#include <linux/atomic.h>



struct kobject;
@@ -94,15 +95,18 @@ struct attribute_group { 
#define __ATTR_IGNORE_LOCKDEP	__ATTR

#endif



#define ATTRIBUTE_GROUPS(name)					\

static const struct attribute_group name##_group = {		\

	.attrs = name##_attrs,					\

};								\

static const struct attribute_group *name##_groups[] = {	\

	&name##_group,						\

#define __ATTRIBUTE_GROUPS(_name)				\

static const struct attribute_group *_name##_groups[] = {	\

	&_name##_group,						\

	NULL,							\

}



#define ATTRIBUTE_GROUPS(_name)					\

static const struct attribute_group _name##_group = {		\

	.attrs = _name##_attrs,					\

};								\

__ATTRIBUTE_GROUPS(_name)



#define attr_name(_attr) (_attr).attr.name



struct file;
@@ -132,15 +136,36 @@ struct bin_attribute { 
 */

#define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr)



/* macro to create static binary attributes easier */

#define BIN_ATTR(_name, _mode, _read, _write, _size)		\

struct bin_attribute bin_attr_##_name = {			\

/* macros to create static binary attributes easier */

#define __BIN_ATTR(_name, _mode, _read, _write, _size) {		\

	.attr = { .name = __stringify(_name), .mode = _mode },		\

	.read	= _read,						\

	.write	= _write,						\

	.size	= _size,						\

}



#define __BIN_ATTR_RO(_name, _size) {					\

	.attr	= { .name = __stringify(_name), .mode = S_IRUGO },	\

	.read	= _name##_read,						\

	.size	= _size,						\

}



#define __BIN_ATTR_RW(_name, _size) __BIN_ATTR(_name,			\

				   (S_IWUSR | S_IRUGO), _name##_read,	\

				   _name##_write)



#define __BIN_ATTR_NULL __ATTR_NULL



#define BIN_ATTR(_name, _mode, _read, _write, _size)			\

struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read,	\

					_write, _size)



#define BIN_ATTR_RO(_name, _size)					\

struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size)



#define BIN_ATTR_RW(_name, _size)					\

struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size)



struct sysfs_ops {

	ssize_t	(*show)(struct kobject *, struct attribute *,char *);

	ssize_t	(*store)(struct kobject *,struct attribute *,const char *, size_t);